TECHNICAL FIELD
[0001] The present disclosure, in general, relates to electrical devices installed in a vehicle; and more particularly relates to an accessory relay for a vehicle, where the accessory relay is capable of handling residual voltages so as to prevent malfunctioning of an outside rear view mirror (ORVM) motor.
BACKGROUND
[0002] There are increasing demands on electrical systems of vehicles, such as multiple power sources, loads with differing priorities and criticalities, and differing voltage requirements. The increased complexity of such electrical systems requires a power management system to achieve optimization of power flow and management of energy storage to allow efficient use of power to serve various loads while preserving energy for high-priority functions, such as the ability to start an engine such as a diesel engine, a petrol engine, a gaseous fuel-powered engine, or any other type of engine.
[0003] Capacitive devices can generate residual voltage on power lines due to their capacitance property. This residual voltage affects the operation of loads connected on the power line, especially motor connected to loads. In most of the occasions, motor connected to loads stop working during the operation of vehicle cranking. As a result, the loads connected to the stopped motor hangs before completing their operation, which in turn provides discomfort to a user of the vehicle.

[0004] FIG.1 illustrates a circuit diagram of an exemplary electrical connection of a vehicle 100 when the vehicle 100 is in a lock mode or a key is turned to lock mode, in which an accessory relay 102 for the vehicle 100 having a movable contact 2 and an input pin 1 is provided. In the accessory relay 102, a battery connection point 102-B, is provided on a power receiving side of the accessory relay 102, where a positive terminal of a battery 106 is connected to the input pin 1 of the accessory relay 102 through an ignition switch 104. However, an output connection point 102-O is provided on the power delivery side of the accessory relay 102, where the output connection point 102-O is connected to the movable contact 2 of the accessory relay 102. The output connection point 102-O is further connected to a body controller 108, an ACC socket 110 and an ORVM switch 112 that is further connected to an after market devices and an ORVM motor 114 respectively.
[0005] When the vehicle 100 is in the lock mode or key is turned to the lock mode as shown in FIG. 1, the accessory relay 102 is in open condition, therefore, the circuit of the electrical connection inside the vehicle is also open.
[0006] When the vehicle 100 is in an accessory mode or key is turned to the accessory mode as shown in FIG. 2, car's accessories like radio, mobile charging device etc. or any aftermarket devices, are only started.
[0007] When the vehicle is in ON mode or key is turned to the ON mode as shown in FIG. 3, the circuit of the electrical connection is completed, that means the accessory relay 102 is in closed condition as well as the ignition relay 103 used for connecting the other electrical loads are also in closed condition. This type of condition is also called as the normal driving position. This position starts the engine.

[0008] When the vehicle is in start mode or key is turned to the start mode as shown in FIG. 4, an ignition switch 104 is in start mode, the ignition relay 103 is inclosed condition and then the starter motor "turns the engine over," which means it turns the crankshaft ON which in turn gets the pistons moving in the cylinders. This starts the engine cycle. Air and fuel is drawn into the cylinders, it is compressed and then the spark plugs fire. This begins combustion. This mode is also called as vehicle cranking mode.
[0009] In addition, during vehicle cranking as shown in FIG. 4, the accessory relay 102 is opened so that maximum battery power is drawn to start the engine and power other essential electrical loads. When accessory relay is opened, power is not drawn towards accessory socket 110, however, capacitive devices connected to accessory socket 110 may generate residual voltage on power lines due to their capacitance property. This residual voltage affect the operation of loads connected on a power line, especially motor connected to loads. In most of the occasions, the motor connected to loads stop working during or after the vehicle cranking. In an example, where load is an outside rear view mirror (ORVM), the ORVM stops working and gets stuck, which in turn provides discomfort to the user.
[0010] Hence, there is requirement of reducing or removing the residual voltage generated by capacitive devices before or during the vehicle cranking so as to prevent malfunctioning of the ORVM motor.
OBJECTS OF THE DISCLOSURE
[0011] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.

[0012] It is a general or primary object of the present disclosure to remove residual voltage generated by capacitive device in power lines of electrical connections of a vehicle.
[0013] It is another object of the present disclosure to prevent malfunctioning of multiple electrical devices by reducing or removing the residual voltage from the power lines of an electrical connections of the vehicle.
[0014] It is further object of the present disclosure to provide a separate electrical connection to an accessory relay which is capable of handling or removing residual voltages from the electrical power lines of the vehicle so as to prevent malfunctioning of any type of motor loads such as ORVM motor.
[0015] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.
SUMMARY
[0016] This summary is provided to introduce concepts related to an accessory relay which is capable of handling residual voltages from the electrical power lines of a vehicle. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0017] The present disclosure provides an accessory relay for a vehicle. The accessory relay includes a battery connection point; a ground connection point; and an output connection point, where when the

accessory relay is normally open, the ground connection point is electrically connected to the output connection point.
[0018] In an aspect, the battery connection point is electrically connected to the output connection point to supply power to loads.
[0019] In an aspect, the accessory relay is normally open when an ignition switch of the vehicle is activated.
[0020] In an aspect, the output connection point is electrically connected to a positive terminal of a vehicle battery through the accessory relay.
[0021] In an aspect, the ground connection point is electrically connected to a vehicle body.
[0022] In an aspect, the output connection point is electrically connected to a body controller, an accessory socket, and an outside rear view mirror (ORVM) motor.
[0023] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.
BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of

devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0025] FIG. 1 illustrates a circuit diagram of a vehicle electrical connection when the key is in lock mode in accordance with the prior art;
[0026] FIG. 2 illustrates a circuit diagram of the vehicle electrical connection when the key is in accessory mode in accordance with the prior art;
[0027] FIG. 3 illustrates a circuit diagram of the vehicle electrical connection when the key is in ON mode in accordance with the prior art;
[0028] FIG. 4 illustrates a circuit diagram of the vehicle electrical connection when the key is in START mode in accordance with the prior art; and
[0029] FIG.5 illustrates a circuit diagram of the vehicle electrical connection, when the key is in START mode in accordance with the embodiment of the present disclosure.
DETAILED DESCRIPTION
[0030] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0031] Generally, during a START mode of a vehicle or when a key is in start mode, or during vehicle cranking, or when an ignition switch 104 is in

ON Mode and an accessory relay 102 is in open position and the ignition relay 103 near the electrical loads is in closed position as shown in FIG.4, capacitive devices connected to an accessory socket 110 may generate residual voltage on power lines of the vehicle electrical connections due to their capacitance property. This residual voltage affects the operation of loads connected on the power line, especially motor connected to the loads. In most of the occasions, the motor connected to the loads may stop working during or after the vehicle cranking. In an example, incases where the load is an outside rearview mirror (ORVM), the ORVM may stop working and gets stuck which provides discomfort to the user.
[0032] To this, the present disclosure provides the accessory relay 102 with a ground connection point 102-G that is used for grounding the residual voltage generated by the capacitive devices by building up the connection between the movable contact 2 of the accessory relay 102 and the point 3 i.e., the ground connection 102-G of the accessory relay 102 that helps in grounding the residual voltage to the body of the vehicle 100.
[0033] Thus, after building up the connection between the accessory relay 102 and the ground connection point 102-G, the residual voltage is grounded to a vehicle body.
[0034] Since, the residual voltage, generated during the START mode of the vehicle or when the key is in start mode, or during vehicle cranking, or when the ignition switch 104 is in start mode, is grounded, so that it does not malfunctions normal working of the ORVM motor and prevents discomfort to the user.

TECHNICAL ADVANTAGES
[0035] The present disclosure provides a solution of grounding the residual voltage generated by the capacitive devices through a relay point in combination with the grounded point.
[0036] The present disclosure prevents malfunctioning of the multiple electrical devices by grounding the residual voltage.
[0037] The present disclosure provides the connection between the ground connection point and the output connection point such that the residual voltage can easily be grounded.
Equivalents
[0038] Further, it will be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles of the invention and are included within its scope.
[0039] Furthermore, all examples recited herein are principally intended expressly to be only for pedagogical purposes to aid the reader in understanding the principles of the invention and the concepts contributed by the inventor(s) to furthering the art and are to be construed as being without limitation to such specifically recited examples and conditions. Also, the various embodiments described herein are not necessarily mutually exclusive, as some embodiments can be combined with one or more other embodiments to form new embodiments.
[0040] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention

is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

WE CLAIM:

1. An accessory relay (102) for a vehicle (100), comprising:
a battery connection point (102-B);
aground connection point (102-G); and
an output connection point (102-O),
wherein when the accessory relay (102) is normally open, the ground connection point (102-G) is electrically connected to the output connection point (102-O).
2. The accessory relay (102) as claimed in claim 1, wherein the battery connection point (102-B) is electrically connected to the output connection point (102-O) to supply power to loads connected to the output connection point (102-O).
3. The accessory relay (102) as claimed in claim 1, wherein the accessory relay (102) is normally open when an ignition switch (104) of the vehicle is activated.
4. The accessory relay (102) as claimed in claim 1, wherein the battery connection point (102-B) is electrically connected to a positive terminal of a vehicle battery (106).

5. The accessory relay (102) as claimed in claim 1, wherein the ground connection point (102-G) is electrically connected to a vehicle body (100).
6. The accessory relay (102) as claimed in claim 1, wherein the output connection point (102-O) is electrically connected to a body controller (108), an accessory socket (110), and an outside rear view mirror (ORVM) motor (114).