Art
[1]
This application claims the benefit of priority based on the date of Korea Patent Application No. 10-2017-0044680 06 years 04 January 2017, and all information disclosed in the literature of the Korea patent application are included as part of the specification.
[2]
The present invention relates to a condition monitoring system and method of the low-voltage battery, more specifically, to diagnose a state of a low voltage battery (12V Aux Battery) which is provided on the low voltage side, the daisy-chain (Daisy Chain) circuit, the voltage from the low voltage battery a by applying received output one or more resulting signals, and provides the high voltage side and low voltage to electrically isolate the side isolator (isolator) control in addition daisy converting the one or more result signal output from the chain circuit, the further control on the low voltage side without having it relates to a condition monitoring system and method of the low-voltage battery that is capable of using the controller to diagnose the state of the low-voltage battery with a low voltage side provided in the high voltage side.
[3]
BACKGROUND
[4]
In general, development and is the BMS in mass production for a battery management (Battery Management System; BMS) is the measured voltage of the high voltage battery, a microcontroller unit (Micro Controller Uint provided on the high voltage side (High-Voltage Side); based on the control voltage is measured, such as MCU) it was diagnosed and manage the voltage of a battery. However, there was a low voltage side (Low-Voltage side), the problem that because it is not equipped with a control unit, such as MCU, to diagnose the voltage state of the low voltage battery (12V Aux Battery) which is provided on the low voltage side.
[5]
To solve this problem, the conventional BMS is to diagnose the voltage of the low voltage battery, a micro-controller unit at a distribution, and the distribution voltage to the voltage of the low voltage battery to a resistance distribution on the low voltage side (Micro Controller Uint; MCU) applied to the system was used to diagnose the state of the low-voltage battery voltage.
[6]
On the other hand, and thus the conventional method for diagnosing the state of the low-voltage battery, since in addition to the control unit provided to the high voltage side to be provided with a component that can play the role of an additional control unit to the low voltage side cost and system of the overall system, making the volume increases, lowers the overall efficiency of the battery management system has a problem.
[7]
Thus, the present inventors to solve the problems The condition diagnosis system and method of the conventional low-voltage battery that has, in order to diagnose the state of the low-voltage battery which is provided on the low voltage side, the daisy chain circuit is a receiving application of a voltage from a low-voltage battery or more by the resulting output signals, and converts the high voltage side and low voltage side electric isolators add one or more of the resulting signal output from the daisy chain circuit to isolate the service to the control unit, without having an additional control unit to the low-voltage side provided in the high voltage side using the controller to leading to the invention the condition diagnosis system and method of the low-voltage battery to diagnose the state of the low-voltage battery with a low voltage side.
[8]
Detailed Description of the Invention
SUMMARY
[9]
The present invention applies a voltage from the such, the present invention is to diagnose the state of the low voltage battery (12V Aux Battery), the daisy-chain (Daisy Chain) circuit low-voltage battery which is provided on the low voltage side derived to solve the aforementioned problems received by outputting one or more resultant signal, and provided to the high voltage side and low voltage to electrically isolate the side isolator (isolator) control in addition daisy converting the one or more result signal output from the chain circuit, not provided with a further control on the low voltage side without using a control unit provided to the high voltage side to provide a condition monitoring system and method of the low-voltage battery to diagnose the state of the low-voltage battery with a low voltage side.
[10]
Problem solving means
[11]
Condition diagnosis system, the low-voltage battery according to one embodiment of the present invention, a daisy chain receives a voltage is applied from the low-voltage battery, applying the voltage and the output of one or more resulting signals based on a first reference voltage received (Daisy Chain) a; circuit, receiving the output of the one or more resulting signals, and to receive an isolator (isolator) unit and the converted at least one resulting signal to convert the one or more result signal reception control unit for diagnosing the condition of the low-voltage battery may include, and the daisy chain circuit is provided in the low-voltage side including the low-voltage battery, the control unit may be provided in the high voltage side including the high voltage battery.
[12]
In one embodiment, the isolator unit can be located between the daisy chain circuit and the control unit, to isolate the said daisy chain circuit and the control unit can be electrically isolated.
[13]
In one embodiment, the daisy chain circuit, said first reference voltage setting unit for setting a reference voltage; any of which can include, the reference voltage setting unit size and the type of signal received by the daisy chain circuit one or more may be based on the control the size of the first reference voltage.
[14]
In one embodiment, the isolator comprises: a Schmitt trigger for receiving compares the coupler (Coupler) unit and the converted at least one result signal and a second reference voltage, for converting the said at least one resulting signal output at least one comparison result signal (Schmitt Trigger) may include a circuit.
[15]
In one embodiment, the Schmitt trigger circuit unit, it is possible, depending on the size and type of the signal inputted to the Schmitt trigger circuit to control the magnitude of the second reference voltage.
[16]
In one embodiment, the daisy chain circuit, the voltage signal, the daisy-chain input voltage signal and the daisy chain on the basis of any one or more of the signal said one or more result signal which feeds back the output voltage of the circuit portion of the circuit unit of the low-voltage battery a can be output.
[17]
In one embodiment, the daisy chain circuit, at least one cell module associated with the at least one battery module controller (Cell Module Controller; CMC) and is connected to the control and daisy chain wiring, wherein on the basis of the at least one resultant signal CMC, it is possible to check for short circuit between the controller and the daisy chain circuit.
[18]
[19]
State diagnosis method for a low-voltage battery according to one embodiment of the present invention comprises the steps daisy chain circuit is provided in the low-voltage side including the low-voltage battery, the method that the controller is provided on the high voltage side including the high voltage battery, the daisy-chain circuitry that receives application of a voltage from said low-voltage battery, is the received voltage and the first step of, based on the reference voltage output one or more resulting signals, the isolator portion receives the output of the one or more resulting signals, and to receive one or more the one results may include the step and the step of diagnosing the condition of the low-voltage battery for receiving the one or more results of the control signal is converted to a converted signal.
[20]
In one embodiment, by converting the one or more resulting signals are isolated to the isolator add the low-voltage battery, and the daisy chain circuit and located between the control unit, the low-voltage battery, and the daisy chain circuit and the controller electrically It may comprise isolated.
[21]
In one embodiment, the step of outputting the one or more resulting signals, may comprise the step of the reference voltage setting part for setting the first reference voltage, the method comprising: setting the first reference voltage, said daisy chain circuit to be based on any one or more of the size and type of the input signal comprise the step of adjusting the size of the first reference voltage.
[22]
In one embodiment, the step of outputting the one or more resulting signals, the coupler portion received one and the comparison to one or more of the resulting signal phase and the Schmitt triggered circuit that converts one or more of the resulting signal and the second reference voltage to convert the It may include more than the comparison result and outputting the signal.
[23]
In one embodiment, the step of outputting the at least one comparison result signal may include the step of adjusting the size of the second reference voltage based on the size and type of the signal inputted to the Schmitt trigger circuit.
[24]
In one embodiment, the step of outputting the one or more resulting signals, the voltage signal of the low-voltage battery, the output voltage of the input voltage signal and the daisy chain circuit in the daisy chain circuit based on at least one of a signal received feedback It may include a step of outputting the one or more resulting signals.
[25]
In one embodiment, the condition diagnosing method of the low-voltage battery, the daisy chain circuit has at least one cell module controller associated with the at least one battery module; steps that lead to (Cell Module Controller CMC) and the control and daisy chain wiring; the may further include, and outputting the result of one or more signals may include the step of, based on the at least one check result signal a short-circuit between the CMC, the controller and the daisy chain circuit.
[26]
Effects of the Invention
[27]
The present invention to diagnose the state of the low voltage battery (12V Aux Battery) which is provided on the low voltage side, the daisy-chain (Daisy Chain) circuit is applied receives the voltage output at least one resultant signal from the low-voltage battery, the high voltage side and low voltage side an electrically additional isolator (isolator) isolated in daisy-converting the at least one resultant signal output from the chain circuit by providing a control unit, by not having an additional control unit to the low voltage side using a control unit provided to the high voltage side of the low voltage side of the low-voltage to diagnose the condition of the battery, and there is an advantage that the low-voltage side of the cost and volume of the controller does not need to a system for diagnosing the condition of the low-voltage battery to decrease.
[28]
The present invention is in by receiving signals received feed back the output voltage of the input voltage and the daisy chain circuit in the daisy chain circuit, and setting the reference voltage based on the type of the received signal and the size, the low voltage side as well as the voltage of the low voltage battery since position daisy can diagnose the status of the input and output circuit chain and, since the specific characteristics of the present invention, even if the input signal has changed to change the advantage that can be diagnosed by receiving a variety of signals.
[29]
Brief Description of the Drawings
[30]
1 is a block diagram illustrating the components of a low voltage status of the battery diagnosis system 100 according to one embodiment of the present invention.
[31]
2 is a block diagram illustrating a reference voltage setting unit 111 that are included in the daisy chain circuit 110, while the diagnostic system 100 of the low-voltage battery according to one embodiment of the present invention.
[32]
Figure 3 is a diagram illustrating the coupler portion 121 and a Schmitt trigger circuit 122 is included in the isolator portion 120 in a state diagnosis system 100 of the low-voltage battery according to one embodiment of the present invention.
[33]
4 is a view showing a Schmitt trigger circuit 122 is included in the isolator portion 120 in a state diagnosis system 100 of the low-voltage battery according to one embodiment of the present invention by way of example.
[34]
Figure 5 is schematically illustrated in the form of transmitting and receiving the daisy chain circuit 110, the isolator 120 and the controller 130, one or more resulting signals in the system 100 state diagnosis of the low-voltage battery according to one embodiment of the present invention shows.
[35]
6 is a flowchart illustrating a series of processes for diagnosing the state of the low voltage battery 10 through the system 100 of the low voltage battery condition diagnosis according to an embodiment of the present invention.
[36]
Figure 7 is a series of steps for checking disconnection between cell module controller 30, the control unit 130 and the daisy chain circuit 110 using the system 100 state diagnosis of the low-voltage battery according to one embodiment of the present invention a flow chart illustrating.
[37]
Mode for the Invention
[38]
Or less, it presents a preferred embodiment for better understanding of the present invention. However, the following examples are not limited to the context of the present invention by the intended addition, the examples provided in order to more readily understand the invention.
[39]
[40]
1 is a block diagram illustrating the components of a low voltage status of the battery diagnosis system 100 according to one embodiment of the present invention.
[41]
Referring to Figure 1, in one embodiment condition diagnosis system 100 of the low-voltage battery according to the present invention includes a daisy chain (Daisy Chain) circuit unit 110, the isolator (Isolator) section 120 and control section 130 and it may be configured.
[42]
[43]
First, the daisy chain circuit 110 may be able to receive a voltage is applied from the low-voltage battery 10, to provide the voltage of the low voltage battery 10 is authorized for a plurality of components included in the daisy chain circuit 110 can. To this end, the daisy chain circuit 110 may be provided on the low voltage side comprising a low-voltage battery (10). Here, the low-voltage battery 10 can be output to a relatively low voltage compared to the high-voltage battery 20, the battery will be described below. For example, it can be one of the battery modules of the plurality of battery modules included in high voltage battery 20, and may be one of a battery cell of the plurality of battery cells included in the battery module.
[44]
Daisy chain circuit 110 may be configured to form a circuit with the components daisy chain (Daisy Chain) connected to the wiring which is provided on the low voltage side, such as hardware devices, software devices, and communication devices. Here, the daisy-chain connection scheme components can mean the way the bus wiring system that is continuously connected, in one example, a daisy chain circuit 110 to connect the components in the SCSI (Small Computer System Interface) approach have.
[45]
Daisy chain circuit 110 may output one or more results based on the received signal voltage and a first reference voltage applied from the low-voltage battery (10). Wherein the first reference voltage, can mean size value of the voltage as a reference voltage in order to diagnose the state of the low-voltage battery (10). In addition, the first reference voltage, may include a high voltage reference and a low voltage reference voltage two reference voltages in order to diagnose whether or not the low voltage battery 10 is that the low-voltage state, a high voltage state. Here, one or more resulting signals may be a signal that is output by comparing the voltage with the first reference voltage is received from a low-voltage battery (10).
[46]
In one embodiment, the daisy chain circuit 110 may include a comparison circuit (Comparator, not shown). Daisy chain circuit 110 is received, and to compare the voltage with a first reference voltage of the low voltage battery 10, as a comparison result and the signal (High-signal) or the output of the low signal (Low-signal) from the comparison circuit can do. At this time, the high signal or low signal may be a signal of one or more results.
[47]
In one embodiment, the daisy chain circuit 110 is the low-voltage battery 10 is received voltage signal, as well as a daisy chain circuit 110 of the input voltage signal and at least one of the daisy signal which feeds back the output voltage of the chain circuit one from It can receive, and may output one or more results based on this signal. At this time, when the same first reference voltage to any of the daisy chain circuit signal receiving unit 110 receives the application, it may not be able to output an accurate result for each signal. To this end, the daisy chain circuit 110 may include a reference voltage setting unit 111 for setting a first reference voltage to correspond to the respective signal received.
[48]
In one embodiment, the reference voltage setting unit 111 may be based on any one or more of the size and type of the signal input to daisy chain circuit 110 to adjust the size of the first reference voltage. Hereinafter reference to Figure 2, the reference voltage setting unit 111 is to account for a series of processes to scale the reference voltage, for example.
[49]
[50]
2 is a block diagram illustrating a reference voltage setting unit 111 that are included in the daisy chain circuit 110, while the diagnostic system 100 of the low-voltage battery according to one embodiment of the present invention.
[51]
In one embodiment, the reference voltage setting unit 111 may adjust the size of the first reference voltage to correspond to the respective signals received by the daisy chain circuit 110, To this end, at least one resistor (111-1 to 111-3) and may include a switching element 111-4. Reference voltage setting unit 111 may adjust the size of the first reference voltage according to the size and type of the signal input to daisy chain circuit 110. For example, if the voltage (Vcc) of a predetermined size on the input reference voltage setting unit 111, a first resistor 111-1 and the second voltage is distributed via a second resistor (111-2), the first reference voltage, the produce. At this time, the voltage (Vcc) of a predetermined size is 10V, the first resistor 111-1 and the second and 6V is generated by a case in which the resistance and 111-2, respectively, and 3KΩ 2KΩ, the voltage division, the reference voltage setting unit 111 may set the voltage of the generated 6V magnitude to the first voltage reference. At this time, the switching element output from the daisy chain circuit 110, the size and based on the type, the case to control the size of the first reference voltage, the daisy chain circuit 110 or below controller 130 is a signal input to the 111-4 to a conductive state of the switching element 111-4, based on a control signal to control connected to the second resistor 111-2 and a third resistor (111-3), which is distributed by changing the resistance value and you can adjust the magnitude of the voltage, through which it is possible to adjust the size of the first reference voltage. For example, a third resistor (111-3) is a variable resistor or by being one or more resistors connected in series or in parallel, it is possible to control the resistance value, to adjust the resistance value of the third resistor (111-3) and a second resistance by connecting 111-2 may generate a different resistance value.
[52]
In an other example, the daisy chain circuit 110 may include a storage unit (not shown) for storing information on the voltage first reference. Storage unit may store the ingestion of the first reference voltage is set based on the size and type of the signal input to daisy chain circuit 110, a reference voltage setting unit 111 is a specific signal to the daisy chain circuit 110 If the input, by matching the first reference voltage corresponding to the type and size of a particular signal may be set to a first reference voltage.
[53]
[54]
Again back to FIG. 1, the isolator 120 may receive one or more of the resulting signal output from the daisy chain circuit 110, it is possible to convert the received one or more resulting signals. With reference to Figure 3, it will be described the process of the isolator portion 120 converts the result of one or more signals received from the daisy chain circuit 110.
[55]
[56]
Figure 3 is a diagram illustrating the coupler portion 121 and a Schmitt trigger circuit 122 is included in the isolator portion 120 in a state diagnosis system 100 of the low-voltage battery according to one embodiment of the present invention.
[57]
3, the isolator 120 may comprise a coupler (Coupler) unit and the Schmitt trigger (Schmitt Trigger) circuit.
[58]
Coupler 121 may convert the result of one or more signals received from the daisy chain circuit 110. For example, coupler 121 may be an opto-coupler (Coupler Opto) or photocoupler (Photo Coupler) for performing a switching operation by using a light source and a light detector. Coupler 121 is able to generate a light signal from a light source based on one or more result signals received from the daisy chain circuit 110, and the photodetector detects the light signal generating an electrical signal. At least one signal resulting from this process is a light signal, the light signal may be converted into another electric signal.
[59]
Schmitt trigger circuit 122 may output at least one comparison result signal by comparing the one or more results based on the converted signal and the second voltage through a coupler 121. The second reference voltage may comprise a low voltage reference and a high voltage reference voltage in order to diagnose the low voltage and high voltage state of signal, and may be a threshold voltage (Threshold Voltage) of the Schmitt trigger circuit (122). In addition, the second reference voltage may be as a reference for diagnosis input and output voltage of the voltage states, the daisy chain circuit 120 of the low-voltage battery 10 in the control unit 130 will be described below voltage.
[60]
Isolator 120 is a can be configured as a coupler portion 121, FIG. 3 (b) the two couplers 121, or a plurality of couplers, as shown in shown in 3 (a) FIG. It may be composed of 121. Further, it may be used in combination FIG. 3 (c) a plurality of coupler 121 and the Schmitt trigger circuit 122, as shown in Fig. With reference to FIG. 4 to be described in more detail for the Schmitt trigger circuit (122).
[61]
[62]
4 is a view in detail showing the Schmitt trigger circuit 122 is included in the isolator portion 120 in a state diagnosis system 100 of the low-voltage battery according to one embodiment of the present invention.
[63]
In one embodiment, the Schmitt trigger circuit 122 is coupled between the two transistors (122-1 and 122-2) is a resistance division and emitter (Emitter) a plurality of terminal resistors (122-3 and 122-4) It can be combined. When at least one result of the converted signal is input to the base (Base) terminal of the first transistor 122-1 lower the base potential of the first transistor (122-1), the first transistor 122-1 is turned off a second transistor 122-2 is turned on. In addition, the first resistor (122-3) has already by the emitter current flow, the higher the emitter potential of the first transistor, the first transistor 122-1 is off-state of the second transistor (122-2) and to maintain. In addition, the first collector (Collector) terminal to which the high potential is due to the second resistor is the base current to the second transistor (122-2) through a (122-4), the second transistor (122-2), the transistor remains on It tries. Accordingly, the first transistor 122-1 is turned off, the second transistor (122-2) may maintain a steady-state to an on state. At this time, at least on one or more of the result signal input to generate, when the voltage magnitude of the signal increases above the second reference voltage, and the base current of the first transistor 122-1 starts to flow, so that the collector voltage in response down is the base current and the emitter current is reduced, the second transistor 122-2. In this case, the first base current of the transistor 122-1 is increased by the metal momentarily become a state the first transistor 122-1 is turned on and the second transistor off state, it is caused through a hysteresis voltage . That is, the Schmitt trigger circuit at least one comparison result signal 122 is output may be an output of such a hysteresis voltage. Here, when the Schmitt trigger circuit unit 122 to apply the same second reference voltage regardless of the type of signal received, it may not be able to output an accurate result of the comparison values ​​for each signal. Thus, the Schmitt trigger circuit 122 may be based on the size and type of the signal inputted to the Schmitt trigger circuit unit 122 to control the magnitude of the second reference voltage.
[64]
In one embodiment, the first transistor (122-1) and second transistors (122-2) comprises a Schmitt trigger circuit 122, the MOSFETs; when (Metal Oxide Silicon Field Effect Transistor MOSFET), the drain of the MOSFET ( Drain) can change the second reference voltage, and installed in terminal and the source (source) adding a variable circuit to allow a current to flow more parallel to the terminal, through the method of adjusting the ratio of the current passing through the MOSFET.
[65]
[66]
Again back to Figure 1, the control unit 130 children Soleil may receive one or more of the resultant signal converted from the tier unit 120, receives the one based on the one or more resulting signals to diagnose the voltage of the low-voltage battery (10) can do.
[67]
In one embodiment, the control unit 130 may be provided in the high voltage side including the high voltage battery 20 is used to bond a plurality of battery modules. For example, the controller 130 includes a battery control system used to diagnose and control the state of the high voltage battery 20, a plurality of battery modules are joined; may be (Battery Management System BMS), substantially in the BMS It may be; (MCU micro controller unit) for controlling a microcontroller unit. That is, the control unit 130 is provided on the high voltage side, the daisy chain circuit 110 may be provided on the low voltage side. On the other hand, when the voltage difference between the high voltage side and low voltage side is large, it can be the voltage applied to the high voltage side cause a configuration failure affect the element that is provided on the low voltage side.
[68]
In one embodiment, the isolator 120 may be located between the daisy chain circuit 110 and the control unit 130, by daisy isolated a chain circuit 110 and the control unit 130 may be electrically isolated. Through this, condition monitoring system 100 of the low-voltage battery according to one embodiment of the present invention by using an isolator unit 120 isolates the voltage signal of the low-voltage battery 10 is transmitted to the control unit 130 located on the high voltage side Thereby, it is possible to, without a control element such as a MCU to the low voltage side using the control unit 130 provided in the high voltage-side voltage to diagnose the state of the low-voltage battery (10).
[69]
[70]
In one embodiment, the daisy chain circuit 110, the control unit 120 and at least one cell module controller (Cell Module Controller; CMC, 30) can be connected in a daisy chain wiring, which is output from the daisy chain circuit 110 based on one or more of the resulting signal can be checked for short circuit between the CMC (30), the control unit 130 and the daisy chain circuit 120. For example, the control unit 130 is the result of outputting a signal output request signal in order from the daisy chain circuit 120, to check for short circuit between the CMC (30), the control unit 130 and the daisy chain circuit 120, to request that the signal output can. Daisy chain circuit 120 receives the result signal output request signal for the short-circuit inspection, it is possible to transmit the check signal to one or more of the CMC (30) connected in a daisy chain wiring, as a result signal, checking from the CMC (30) there may be a feedback signal in response to the signal. At this time, it is not, check the signal can be transmitted or fed back to a response signal if a short circuit occurs. Thus daisy chain circuit 120 checks the signal is either not transmitted, checking if the feedback signal as a response to the signal is not received, and transmits a fault signal (Fault signal) to the control section 130, control section 130 is short-circuited It can recognize that the failure has occurred. Here, if the daisy chain circuit 120 receives the feedback response signal, the daisy chain circuit 120 may transmit the normal operation signal to the controller 130. The
[71]
In another one embodiment, the daisy chain circuit 120 checks the signal is either not transmitted, if it is not a feedback signal received as a response to the check signal, a signal requesting the result signal output to check for short circuit in the control unit 130 If the number of which does not transmit a response signal to the control unit 130, the control unit 130 does not receive a signal during two hours to a predetermined elapsed, it is possible to diagnose that a short circuit failure has occurred.
[72]
[73]
As described above, the condition monitoring system 100 of the low-voltage battery according to one embodiment of the present invention daisy chain circuit 110 receives a voltage is applied from the low-voltage battery 10, the output of one or more resulting signals, and the high voltage side and by providing the low voltage side electric isolator unit control section 130 and 120 is converted to one or more of the resulting signal is output to isolate the, by the control unit located on high voltage side the state of the low-voltage-side low-voltage battery 10 of the It can be diagnosed. With reference to Figure 5, in order to diagnose the output voltage of the low voltage battery 10 is a voltage state, and the daisy chain circuit 110, the low-voltage battery 10, the daisy chain circuit 110, an isolator 120, and It shall be described in more detail for one or more resulting signals are sent and received in the controller 130.
[74]
[75]
Figure 5 is schematically illustrated in the form of transmitting and receiving the daisy chain circuit 110, the isolator 120 and the controller 130, one or more resulting signals in the system 100 state diagnosis of the low-voltage battery according to one embodiment of the present invention shows.
[76]
5, and outputs the input voltage signal to the daisy chain circuit in the low-voltage battery (10). Input voltage signal daisy chain circuit 110 received the signal transmits the result of outputting the result signal by converting an input voltage signal, and outputs it to an isolator 120. Here, the resulting signal may be output to one or more. As an example, the resulting signal may be an output voltage signal to an input signal voltage and an input voltage signal. Isolator unit 120 converts the result of receiving the comparison result signal and outputting the signal, the controller 130 may receive the comparison result signal to diagnose the voltage state of the low-voltage battery (10).
[77]
The control unit 130 may transmit the resultant signal output request signal to the daisy chain circuit 110, the daisy chain circuit 110 is used to send a check signal for checking disconnection. Cell controller module 30 transmits a response signal as a response to the inspection signal to the daisy chain circuit 110. At this time, when the response signals are not received, the daisy chain circuit 110 may transmit a failure signal to the control unit 130. With reference to Figures 6 and 7, a series of diagnosing the status of the input and output voltage of the low voltage battery 10 and the daisy chain circuit 110 using the system 100 state diagnosis of the low-voltage battery according to one embodiment of the present invention process will be described for the.
[78]
[79]
6 is a flowchart illustrating a series of processes for diagnosing the state of the low voltage battery 10 through the system 100 of the low voltage battery condition diagnosis according to an embodiment of the present invention.
[80]
First, when the condition monitoring system of the low-voltage battery disclosed in accordance with one embodiment of the present invention, a voltage is applied to the low-voltage battery in a daisy chain circuit (S110). Reference voltage setting included in the daisy chain circuit unit to set the first reference voltage based on the size and type of the voltage input to daisy chain circuit and (S120), the daisy chain circuit is set to a first reference voltage and is receiving a low-voltage battery and the output of the voltage based on at least one resulting signal (S130). Coupler unit converts to receive one or more of the result signals output from the step S130 (S140). Results converted one or more signals are provided and, the Schmitt trigger circuit unit adjusting the second reference voltage based on the size and type of the signal inputted to the Schmitt trigger circuit in the Schmitt trigger circuit (S150). Thereafter, the Schmitt trigger circuit outputs the first comparison result signal based on the second reference voltage control signal results in one or more steps S150 and transformed in step S140 (S160). The controller can diagnose the output voltage of the voltage state, and the daisy chain circuit of the low-voltage battery based on the comparison result signal output in step S160.
[81]
[82]
Figure 7 is a series of steps for checking disconnection between cell module controller 30, the control unit 130 and the daisy chain circuit 110 using the system 100 state diagnosis of the low-voltage battery according to one embodiment of the present invention a flow chart illustrating.
[83]
First, the control section transmits a result signal output request signal to the daisy chain circuit (S210). Daisy chain circuit transmits the result when receiving the output signal receives the request signal, checks the signal on the daisy chain connected to the wiring system controller and the cell controller module transmitted in step S210 (S220). When cell module controller receives the check signal from the daisy chain circuit, and transmits a response signal thereto to the controller, and the daisy chain circuit (S230). The daisy chain circuit is the case of receiving the response signal transmitted by the cell module controller in step S230, the daisy chain circuit transmits a normal operation signal to the control unit (S240) continues the normal operation (S250). However, the daisy chain circuit fails to receive a response signal transmitted by the cell module controller in step S230, the daisy chain circuit transmits a fault signal to a controller (S260), the control unit on receipt of a failure signal is transmitted from the S260 step and it recognizes a disconnection fault condition (S270).
[84]
[85]
As described, the condition monitoring system 100 of the low-voltage battery according to one embodiment of the present invention outputs a daisy chain circuit that the signal at least one (110) receiving a voltage is applied from the low-voltage battery which is provided on the low voltage side, the isolator unit 120 by providing the control unit 130 converts the one or more result signal output from the daisy chain circuit, by not having an additional control unit to the low voltage side using a control unit provided to the high voltage side of the low-voltage-side low-voltage battery of It can diagnose the condition.
[86]
At this time, the isolator portion 120 can solve the problem that may arise in the insulation by electrically insulating the high voltage side and low voltage side, utilizing a control unit 130 provided on the high voltage side.
[87]
In addition, the reception received feed back the output voltage of the daisy chain circuit 110, the input voltage and the daisy chain circuit 110 of the signal, and by setting the reference voltage based on the type of the received signal and the size, the low-voltage battery (10) voltage as well as to diagnose the output state of the daisy chain circuit 110, which is provided on the low voltage side.
[88]
In this case, it can be diagnosed by receiving a variety of signals, because even if the input signal can be set by variations in fluid adjusts the first reference voltage and second reference voltage, does not change the inherent properties of the present invention has.
[89]
[90]
Wherein in a preferred embodiment it has been with reference to describe, to vary the invention within the scope not departing from the spirit and scope of the invention as set forth in the claims below are those skilled in the art modifications and variations of the present invention it will be appreciated that it can be.

Claims
[Claim 1]
Under application of a voltage from a low-voltage battery, it is received daisy chain to the output voltage and the at least one resulting signal based on the first reference voltage (Daisy Chain) circuitry; Isolators (Isolator) for receiving the output of the one or more resulting signals, and converts the result of the one or more signal receiving unit; And to receive the one or more result signal conversion control unit for diagnosing the condition of the low-voltage battery; wherein the said daisy chain circuit is provided in the low-voltage side including the low-voltage battery, the control unit comprising a high-voltage battery , condition monitoring system of the low-voltage battery, characterized in that provided on the high voltage side. .
[Claim 2]
According to claim 1, wherein said isolator comprises: a daisy chain circuit and located between the control unit, condition monitoring system of the low-voltage battery, characterized in that the isolated isolated by the daisy chain circuit and the controller in electrical.
[Claim 3]
According to claim 1, wherein said daisy chain circuit, said first reference voltage setting unit for setting a reference voltage; any one of includes, the reference voltage setting unit size and the type of signal received by the daisy chain circuit based on the above, it characterized in that for adjusting the size of the first reference voltage, the low voltage of the battery condition diagnosis system.
[Claim 4]
Claim wherein the isolator unit, a coupler (Coupler) unit for converting the one or more signals received in the first result; And the resulting transformed signal and the at least one Schmitt trigger which outputs at least one comparison result signal by comparing a second reference voltage (Schmitt Trigger) circuitry;, condition monitoring system of the low-voltage battery, comprising: a.
[Claim 5]
The method of claim 4, wherein the Schmitt trigger circuit portion, a low-voltage battery condition diagnosis system, characterized in that for adjusting the size of the second reference voltage based on the size and type of the signal inputted to the Schmitt trigger circuit.
[Claim 6]
According to claim 1, wherein said daisy chain circuit, the low-voltage voltage signal of the battery, the daisy-chain input voltage signal and a result on the basis of any one or more of the signal received feed back the output voltage of the daisy chain circuit at least one of the circuit portions , condition monitoring system of the low-voltage battery, characterized in that for outputting a signal.
[Claim 7]
According to claim 1, wherein said daisy chain circuit, at least one cell module associated with the at least one battery module controller (Cell Module Controller; CMC) and is connected to the control and daisy chain wiring, on the basis of the at least one resultant signal the CMC, and the controller, the low-voltage battery condition diagnosis system, characterized in that for checking a short-circuit between the daisy chain circuit.
[Claim 8]
Step daisy chain circuit is provided in the low-voltage side including the low-voltage battery; Step in which the control unit is provided on the high voltage side including the high-voltage battery; Step in which the daisy chain circuit receiving a voltage is applied from the low-voltage battery, is output one or more results based on the signal voltage and the first reference voltage received; Receiving said at least one resulting signal isolator output portion, and converts the result of the one or more received signals; The method of the low-voltage battery condition diagnosis comprising; and a step of diagnosing the condition of the low-voltage battery for receiving the one or more results of the control signal is converted. .
[Claim 9]
The method of claim 8 wherein the step of converting the one or more resulting signals, the isolator portion located between the low-voltage battery, and the daisy chain circuit and the controller, to insulate the low-voltage battery, and the daisy chain circuit and the controller further comprising: electrically isolated; comprising the method of the low-voltage battery condition diagnosis.
[Claim 10]
The method of claim 8 wherein the step of outputting the one or more resulting signals, the reference voltage setting portion setting a first reference voltage; includes the step of setting the first reference voltage, said daisy chain circuit the method of the low-voltage battery condition diagnosis comprising the; on the basis of any one or more of the size and type of signal adjusting the magnitude of the first reference voltage input to.
[Claim 11]
10. The method of claim 8 wherein the step of outputting the one or more resulting signals, comprising: a coupler portion which converts the result of one or more signals received; And by a Schmitt trigger circuit that compares the at least one result signal and a second conversion reference voltage and outputting at least one comparison result signal;, condition diagnosis method of the low-voltage battery, comprising: a.
[Claim 12]
The method of claim 11, wherein the step of outputting the at least one comparison result signal comprises the steps of controlling the size of the second reference voltage based on the size and type of the signal inputted to the Schmitt trigger circuit; characterized in that it comprises a the method of the low-voltage battery condition diagnosis.
[Claim 13]
The method of claim 8 wherein the step of outputting the one or more resulting signals, based on at least one of a voltage signal of the low-voltage battery, the signal received feed back the output voltage of the input voltage signal and the daisy chain circuit in the daisy chain circuit and outputting the one or more resulting signals;, condition diagnosis method of the low-voltage battery, comprising: a.
[Claim 14]
The method of claim 8 wherein the condition diagnosing method of the low-voltage battery, the daisy chain circuit has at least one cell module controller associated with the at least one battery module; steps that lead to (Cell Module Controller CMC) and the control and daisy chain wiring systems ; further comprising a, and outputting the one or more resulting signals, on the basis of the one or more resulting signals the CMC, the method comprising: checking a short-circuit between the control unit and the daisy chain circuit; characterized in that it comprises a, diagnostics status of the low-voltage battery.