1]This application claims the benefit of priority based on the 25th Korea Patent Application No. 10-2016-0158504 November 2016 and April, all information disclosed in the literature of the Korea patent application are included as part of the specification.
[2]The present invention relates to my insulating element diagnostic system BMS, in the diagnosis over the insulating element for partitioning along the BMS to the voltage range, the output from the battery monitoring circuit of the device isolates the battery pack diagnostic signal that passes through the insulating element of the transmitted and received communication signal obtained after the diagnosis at least of the insulation element on the basis of bit calculation value of the obtained battery pack diagnostic signal, or the acquisition after acquiring from the input end and output end of the insulating element communication signals are sent and received in the input terminal and output terminal based on the bit operation value related to BMS within insulating element diagnostic system that can diagnose the abnormality of insulation elements.
BACKGROUND
[3]
In general, the battery management system applied to the electric vehicle (BATTERY MANAGEMENT SYSTEM; BMS) is connected to the battery pack including a plurality of battery cells by being thereby manage the various cells of a battery pack.
[4]
At this time, BMS is greatly connected with the battery cells may be divided by a voltage region of high pressure (HIGH VOLTAGE) area and the low pressure (LOW VOLTAGE) region connected to the vehicle for sensing a battery cell, where high pressure region and low pressure region between the through the insulating element is interposed to keep the insulation.
[5]
Also, various diagnostic of the battery cells are sensed in the high-pressure area information via the insulating element of the processing unit located in low pressure region; may be delivered to the (MICRO CONTROLLER UNIT MCU). The isolated when at least the element occurs, and may cause the BMS malfunctions such as CONTACTOR open due to the various problems of the diagnostic information of the battery cell in which the transmission, in the absence of techniques that can be diagnosed by itself to generate more of the insulating elements diagnostic results are circumstances that have caused the problems do not normally a problem, such as an explosion of the battery pack due to non-receipt.
[6]
The present inventor has obtained the battery pack diagnostic signal to solve the problems and limits the insulating element having been applied to the conventional BMS, is output from the battery monitoring circuit passes through the insulating element as described above from the input end and output end of the insulating elements based on the bit operation value of the transmitting and receiving communication signals for acquiring a communication signal to be diagnosed, or send and receive over the insulating element on the basis of bit calculation value of the battery pack diagnostic signal obtained after then obtained at the input terminal and the output terminal of the insulating elements which can be diagnosed over the insulating elements leading to the development of the BMS in isolation device diagnostic system.
Detailed Description of the Invention
SUMMARY
[7]
The present invention is derived to resolve the above problems, the present invention provides a battery pack diagnosis in the diagnosis over the insulating element for partitioning along the BMS to the voltage range, the output from the battery monitoring circuit passes through the insulating element obtained after acquiring a communication signal to be diagnosed, or send and receive over the insulating element on the basis of bit calculation value of the battery pack diagnostic signal obtained after acquiring the signals isolated from the input end and output end of the device from the input end and output end of the insulating elements based on the calculated value of the bits transmitted and received communication signal to provide a BMS within the insulating element diagnostic system that can diagnose or more of the insulating elements.
Problem solving means
[8]
BMS within the insulating element diagnosis system according to an embodiment of the invention the first and the battery management system divided by the second voltage region by an insulating element; according to (BATTERY MANAGEMENT SYSTEM BMS), the insulation from the first voltage region the input inputted through the device input signal, a comparison unit and the insulating elements on the basis of the comparison result to the first output a comparison result after comparing the output signal with each other to be output to the second voltage region through the output terminal of the insulating elements to determine whether the malfunction can comprise a first and a second computing device.
[9]
In one embodiment, the comparison unit to the second rear end of the battery diagnosis is output to the second voltage domain signals and diagnostic signals shear battery input via the input end of the insulating element, with the output end of the insulating element in the first voltage domain to each other a comparison then compare the result with the transmitting communication signals from the first comparison part and the first voltage region through the insulating element provided on the first computational device in the battery management system that is passed to the second voltage range, in the second voltage region through the insulating element of the second comparator for providing the first and then a comparison of the receiving communication signal transmitted to the first voltage domain to each other, the comparison result in the second computing device in the battery management system It may include at least one or more than one.
[10]
In one embodiment, the first comparison portion of the front-stage battery diagnostic signal and a rear end of and then amplifies the difference between the battery diagnosis signal, the first differential amplifier comparator which provides an amplified result to said first computing device or Acquisition the it may include at least any one of the first comparator for adding service after adding the bit value and the bit number of the rear battery diagnosis signal of the front-stage battery diagnostic signal, the added results to the first computing device.
[11]
In one embodiment, the first differential amplifier comparator is a differential amplifier (OP AMP) and the first addition the comparator is a beta ever-OR gate (XOR GATE), bit values, and the rear end of the battery diagnosis signal of the front-stage battery diagnostic signal It can be the bit value to be added by using the beta ever-OR gate circuit.
[12]
In one embodiment, the first computing device may be determined to be less than the first differential amplifier a comparator result value is amplified by a certain threshold, the malfunction of the insulating element.
[13]
In one embodiment, the first computing device may determine that if the high bit (HIGH BIT) values ​​corresponding to the result value is added through the first addition comparator 1, wherein the insulating element malfunction .
[14]
In one embodiment, the second comparison unit the transmitting communication signals in, amplifying a difference between the rear end of the transmitting communication signal obtained through the output terminal of the front end transmission communication signal and said insulating element obtained through the input end of the insulating elements after the second differential amplifier comparator which outputs an amplified result, the receiving communication signals from, the number of the rear end obtained from the output of the front end for receiving the communication signal and the insulating element obtained through the input end of the insulating element credit a third differential amplifier comparator, and the second and then each of the OR operation result values ​​output from the third differential amplifier comparators, wherein the operation result value and outputting the result after amplifying a difference between the communication signal, the amplification value the can include adding a second comparator for providing the second computing device.
[15]
In one embodiment, the second and third differential amplifier comparator may be a differential amplifier (OP AMP) and the second addition comparator OR gate (OR GATE).
[16]
In one embodiment, the second computing device may determine that if the high-bit values ​​of the logical sum of the operation result value through the second addition to the comparator 1, wherein the insulating element malfunction.
Effects of the Invention
[17]
According to an aspect of the invention, the insulating element on the basis of bit calculation value of the acquired After obtaining the battery pack diagnostic signal that is output by the battery monitoring circuit passes through the insulating element from the input end and output end of the insulating element battery pack diagnostic signal it is possible to diagnose at least in the insulating element of a communication signal diagnose, or transmitting and receiving at least on the basis of bit calculation values ​​of the transmitted and received communication signals obtained after obtaining from the input terminal and the output terminal of the insulating element, of the communication function using the insulating elements pre-diagnostic or more occurs prior to an advantage that can be improved the stability of BMS operation.
Brief Description of the Drawings
[18]
1 is a view schematically showing the configuration of the BMS (2) is within the insulating element BMS diagnostic system 100 according to one embodiment of the present invention is applied.
[19]
2 is a view showing an embodiment of an insulating element in BMS diagnostic system 100 shown in FIG.
[20]
3 is a view showing the configuration of the BMS within the insulating element diagnostic system for another embodiment 100 for a BMS within the insulating element diagnostic system 100 'implemented via shown in Fig.
[21]
4 is a view showing the configuration of the BMS within the insulating element diagnostic system (100, 100 ') to another embodiment of the BMS within the insulating element diagnostic system (100 implemented with' ') shown in Figures 2 and 3.
Mode for the Invention
[22]
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.
[23]
[24]
1 is a diagram schematically showing the configuration of the BMS (2) the BMS within the insulating element diagnostic system 100 according to one embodiment of the present invention is applied, Figure 2 is a BMS within the insulating element diagnosis system shown in Figure 1 a diagram illustrating one embodiment of the system 100.
[25]
Figures 1 and look at the 2, BMS within the insulating element diagnostic system 100 according to the present invention a battery management system for obtaining a battery cell (1a), each of the voltage information or temperature information such as from a battery pack (1) (BMS, 2) it may be provided on the inner side.
[26]
A battery management system (2) may be divided into a first region and a second region largely through the insulating element (4), wherein the first region can mean a high pressure (HIGH VOLTAGE) area, the battery monitoring circuit (3) provided and, it may indicate a comparator 110, the first computational device 120 and second computing device 130 and the controller 5 and the like is provided with a low pressure (LOW VOLTAGE) region according to the present invention.
[27]
Here, the first computational device 120 is the battery monitoring circuit 3, and wireless communication capabilities include a central processing unit; may be (MICRO CONTROLLER UNIT MCU) second computing device 130 includes a battery monitoring circuit (3 ) it may represent a safety central processing unit (sAFE MICRO CONTROLLER uNIT) for receiving diagnostic signals from the battery pack.
[28]
That is, BMS (2) the insulating element (4), the first and only can be divided into two regions as a first and a second region may correspond to a state insulated from each other, and the battery monitoring circuit (3 through ) in the second region from the first region via the communication signal is both insulating elements (4) for a variety of information or communication with the first computational device 120 of the battery cell (1a), or a second area provided from the It may be delivered to the first region.
[29]
[30]
On the other hand, which bars, that may have a configuration with the various embodiments, such as BMS within the insulating element diagnostic system 100 according to the present invention is 2 to 4 also look at in more detail also below through 2 to 4 It shall be.
[31]
[32]
Figure 2 through an embodiment different to the BMS the BMS within insulating element diagnostic system 100 shown in my isolated a diagram illustrating one embodiment of a device diagnostic system 100, FIG. 3 is shown in Figure 1 implementation of BMS 'and shows the configuration of Figure 4 is the BMS within the insulating element diagnostic system (100, 100 illustrated in figures 2 and 3 within the insulating element diagnostic system 100, implemented in accordance with another implementation a) Yes a BMS in isolated shows the configuration of a device diagnostic system (100 '').
[33]
The comparator 110 of the BMS within the insulating element diagnostic system 100 shown in Figure 2 is the output of the front end battery diagnostic signal input via the input end of the insulating element (4) in the first voltage domain and the insulating element (4) through it may include a first comparison unit (111) for providing a first comparison, and then comparing the rear battery diagnostic signal to each other to be outputted to a second voltage domain result in a first computing device 120.
[34]
A first comparison unit 111 amplifies the difference between the front-stage battery diagnostic signal and a rear end battery diagnostic signal obtained after the first differential amplifier comparator which provides an amplified result to said first computing device (120) (111a ) provides a bit value, and after the rear end of adding the bit value of the battery diagnosis signal, the added result of the can, and, or the above-shear battery diagnostic signal obtained as shown in FIG. 3 to be included in the first computing device 120 the which may comprise a first adder comparator (111b).
[35]
That is, the 2 and 3 are of the same construction, the differential amplifier instead of the first comparator (111a) of Figure 2 the first addition comparator (111b) the piece may be applied.
[36]
Here, the first differential amplifier comparator (111a) may mean a general differential amplifier (OP AMP), it is possible to sense the first addition comparator (111b) is beta ever-OR gate (XOR GATE).
[37]
In the case of the first differential amplifier comparator (111a) is able to act for transmitting the amplified value after amplifying a difference between the shear battery diagnostic signal and a rear end battery diagnostic signal on the first computational device 120, and the first computing device 120 is to judge the results amplified by the first differential amplifier comparator (111a) hayeoteum at least the insulating element (4) occurs when the less than a certain threshold.
[38]
Here, the means available for the less than a threshold, meaning the voltage difference between the input cheukin first voltage domain and the isolated output stage cheukin second voltage region of the device of the insulating elements does not occur to mean that insulation is not performed correctly, because it can be applied to detect a first differential amplifier comparator (111a) of these points.
[39]
If the first case of adding a comparator (111b), the shear battery diagnosis signal having the bit value at the low bit (LOW BIT, 0) with the high bit (HIGH BIT, 1) and a rear end, the battery diagnosis signal having the bit value at the low bit by (0) and a high bit (1) a beta ever-or operation with each other, if the operation result value is a high-bit value that corresponds to the first it is determined that it has an error occurs in the insulating element (4).
[40]
[41]
Instead Next the BMS within the insulating element diagnostic system (100 '') is 2 and the first differential amplifier comparator (111a) included in Figure 3, and a first addition comparator (111b) shown in Fig. Referring to Figure 4, Figure 4, and transmitting communication signals (TX) through the insulating element that is passed in a second voltage range from the first voltage region, it may be communicated in the second voltage region through the insulating element to a first voltage domain credit communication signal (RX) the comparison result is then compared with each other may comprise a second comparison unit 112 for providing the second computing device (130).
[42]
A second comparison unit 112 is the shear transmitting acquisition of the transmitting communication signal transmitted to the first arithmetic unit 120 through the insulating element (4) in the first voltage region, through the input end of the insulating element (4) Credit a second differential amplifier comparator (112a) and the element isolated from the second voltage range to output the after amplification of the difference between the rear end of the transmitting communication signals, the amplified result values ​​obtained through the output terminal of the communication signal and the insulating element (4) of 4, the receiving communication call is transferred to the first voltage region via the input end of the insulating element (4) obtained by the (here input stage can refer to the output stage at which the rear end of the transmitting communication signals output) after the front end can at the output terminal (here, the credit communication signal and the insulating element (4) the output stage amplifies the difference between the rear end for receiving a communication signal obtained through (may refer to an input terminal to which the front end for transmitting a communication signal input, a third differential amplifier comparator which outputs the amplified results (11 Claim to provide a 2b) and the second and third differential amplifier comparator (each logical sum the results (OR) a calculation then, a result value a second computing device 130, which is output from 112a, 112b) 2 may include the addition comparator (112c).
[43]
Here, the second and third differential amplifier comparator (112a, 112b) may be in the same way as the first differential amplifier comparator (111a) the differential amplifier (OP AMP), second addition comparator (112c) is a logical OR gate (OR GATE ) it can be.
[44]
Thus, the second and third differential amplifier comparator (112a, 112b) are respectively front and rear ends the transmission order and the number of front and rear ends between a communication signal credit after amplifying a difference between the communication signal, a second adding the respective amplified value comparator It is passed to (112c).
[45]
Second adding a comparator (112c) is to judge by another OR operation value of the bit is the amplified value of each of these having, hayeoteum an error occurs in the insulating element (4) If the operation result value is a high-bit value corresponding to one do.
[46]
[47]
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]First and second BMS divided by voltage region by an insulating element; according to (BATTERY MANAGEMENT SYSTEM BMS), of the insulating element and the input signal inputted through the input end of the insulating element, in the first voltage domain after comparing the first output to be outputted to a second voltage domain signal through the output terminal to each other, the comparison section for outputting a comparison result; , BMS within the insulating element diagnostic system comprising: a; and the first and second arithmetic unit for determining whether or not a malfunction of the insulating element on the basis of the comparison result.
[Claim 2]
The method of claim 1, wherein the comparison unit, wherein the rear end in the first voltage domain to be output to the second voltage region through the output end of the front battery diagnostic signal and the insulating element which is input through the input end of the insulating element battery diagnostic signal , BMS within the insulating element diagnostic system comprising: a; a and then compared with each other, the comparison a first comparison unit for providing a first computing device in the battery management system.
[Claim 3]
The method of claim 2 wherein the first differential amplifier comparator which provides the first after one comparison unit, amplifies a difference between the front-stage battery diagnostic signal and a rear end battery diagnostic signal acquisition, the amplified results to the first computing device; Or obtaining a first sum comparator to provide a bit value and then adding the bit value of the rear end of the battery diagnosis signal, the added result of the front-stage battery diagnostic signal to the first computing device; Of, BMS within the insulating element, characterized in that the diagnostic system to include at least one.
[Claim 4]
The method of claim 3, wherein the first differential amplifier comparator is a differential amplifier (OP AMP) and the first addition comparator beta ever-OR gate (XOR GATE), and the bit value and the rear end of the battery diagnosis signal of the front-stage battery diagnostic signal the value of the bit, characterized in that to be added using the beta ever-OR gate circuit, BMS within the insulating element diagnostic system.
[Claim 5]
The method of claim 3, wherein the first computing device, said first differential amplifier when the comparator to less than the resulting value is a certain threshold amplified,, BMS within the insulating element, characterized in that to determine that the said insulating element malfunction diagnostic systems.
[Claim 6]
4. The method of claim 3 wherein the first computing device, if the result value is added through the first addition the comparator corresponding to the high bit (HIGH BIT) values ​​corresponding to the first, to determine that the said insulating element malfunction , BMS within the insulating element, characterized in that the diagnostic system.
[Claim 7]
The method of claim 1, wherein the comparison unit, and transmitting a communication signal from the first voltage region through the insulating element that is passed to the second voltage domain, wherein in the second voltage region through the insulating element a second comparator for providing the second computing device in a number that is passed to the first voltage domain and then compares the credit signal communications with each other, the comparison result of the BMS; Of at least one, BMS within the insulating element, characterized in that the diagnostic system comprises at least one.
[Claim 8]
The method of claim 7, wherein said second comparison unit, the transmission communication signal wherein the difference between the rear end of the transmitting communication signal obtained through the output terminal of the front end transmission communication signal and said insulating element obtained through the input end of the insulating elements amplified. then, the second differential amplifier comparator and outputting the amplified result; The receiving communication signals from, and then amplify the difference between the rear end for receiving a communication signal obtained through the output terminal of the front end for receiving the communication signal and the insulating element obtained through the input end of the insulating element, and outputting an amplified result a third differential amplifier comparator; , BMS comprising: a; and the second adder comparator for providing the second and third differential amplifier after comparator-or operation of each result value output from the cost calculation result value a second calculator isolated element within the diagnostic system.
[Claim 9]
10. The method of claim 8, wherein the second and third differential amplifier comparator is a differential amplifier (OP AMP) and the second addition comparator OR gate (OR GATE) which, in BMS insulating element, characterized in that the diagnostic system.
[Claim 10]
The method of claim 8, wherein the second computing device, if the logical sum of the operation result value through the second addition the comparator corresponds to the high-bit values ​​corresponding to 1, characterized in that it determines that the said insulating element malfunction , BMS within the insulating element diagnostic system.