Control unit for charging vehicle power battery

Abstract

The utility model relates to the technical field of battery charging, in particular to a vehicle power battery charging control unit which comprises a connector body, an input wire harness, an output wire harness, a first plug-in, a second plug-in, a third plug-in, a fourth plug-in and a fifth plug-in. The first plug-in unit is communicated with the connector main body through the input wire harness, the second plug-in unit is fixedly connected to the top end of the output wire harness, the second plug-in unit is communicated with the connector main body through the output wire harness, and the charging device can detect a current mode and a charging resistance value during charging, so that the safety of a battery during charging is ensured, and the energy loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery charging, in particular to a control unit for charging a vehicle power battery. Background Art

[0002] A good ecology itself contains infinite economic value, which can continuously create comprehensive benefits and achieve sustainable economic and social development. In order to reduce environmental pollution and achieve blue skies and green waters, my country has invested heavily in new energy vehicles, and new energy vehicles have gradually become mainstream. However, different car companies have different charging protocols, which leads to different working modes of charging piles of different car companies. Some use AC charging, and some use DC charging. If the car uses an unmatched charging pile, it will have a great impact on vehicle safety. Utility Model Content

[0003] The purpose of the utility model is to provide a control unit for charging a vehicle power battery, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a control unit for charging a vehicle power battery, comprising a connector body, an input wiring harness, an output wiring harness, a first plug-in, a second plug-in, a third plug-in, a fourth plug-in and a fifth plug-in, wherein the first plug-in is fixedly connected to the top end of the input wiring harness, and the first plug-in is connected to the connector body through the input wiring harness, and the second plug-in is fixedly connected to the top end of the output wiring harness, and the second plug-in is connected to the connector body through the output wiring harness.

[0005] Preferably, the first plug-in is an OBC input plug-in, and the first plug-in is provided with three holes, which are N, PE and L from right to left.

[0006] Preferably, the second plug-in is an OBC output plug-in, and the second plug-in is provided with two holes, the right side is the DC output positive pole, and the left side is the DC output negative pole.

[0007] Preferably, the third plug-in is a DC output plug-in, and the third plug-in is provided with two holes, the right side is the OBC output positive pole, and the left side is the OBC output negative pole.

[0008] Preferably, the fourth plug-in is an AC / DC input plug-in, and the fourth plug-in is provided with three holes, which are N, PE and L from right to left.

[0009] Preferably, the fifth plug-in is a vehicle communication connector, and the fifth plug-in is provided with eighteen hole positions, and the connector body is provided with digital identification, and the eighteen spaces and the digital identifications correspond one to one.

[0010] Preferably, a DCU module is provided inside the connector body, and the DCU module is connected to the fourth plug-in. When the DCU module identifies the AC charging mode, the relay does not operate and maintains this state. When the DCU module identifies the DC charging mode, the relay is normally closed when disconnected and normally open when closed. At this time, the pile can identify that the DC charging gun is connected to the charging socket. If the relay control fails, a relay fault is reported, and the working state is set to fault, the fault level is reported, and the diagnostic fault code DTC is stored.

[0011] Preferably, when the DCU module detects that the resistance value is between 4.5K and 5.5K, the relay does not operate and directly reports the current resistance value. When the DCU detects that the resistance value is below 4K, the normally closed state is opened and the normally open state is closed. After completion, the relay status is reported instead of the current resistance value. If the relay control fails, a relay fault is reported, and the working state is set to fault, the fault level is reported, and the diagnostic fault code DTC is stored.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the voltage and the resistance of the plug can be detected when the car is charging, and it can identify that the DC charging gun is connected to the charging socket. If it is AC power, the relay will not work and maintain this state. It can automatically identify the resistance of the charging line, and dynamically adjust the charging power by detecting the temperature probe of the charging line, so as to avoid the charging equipment from overheating, thereby ensuring charging safety and reducing the loss during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the front view of the connector body.

[0014] Figure 2 This is a left side view of the connector body.

[0015] Figure 3 This is a right side view of the connector body.

[0016] Figure 4 A side view of the connector body.

[0017] Figure 5 Schematic diagram of gun detection during operation.

[0018] Figure 6 This is a schematic diagram of gun detection during sleep mode.

[0019] Figure 7 This is a schematic diagram of supplying power to CAN in sleep mode.

[0020] In the figure: 1 connector body, 2 input wiring harness, 3 output wiring harness, 4 first plug-in, 5 second plug-in, 6 third plug-in, 7 fourth plug-in, 8 fifth plug-in. DETAILED DESCRIPTION

[0021] In order to deepen the understanding and recognition of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described and introduced in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments, and are not intended to limit the embodiments in any form. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-7 The utility model provides a technical solution: a control unit for charging a vehicle power battery, comprising a connector body 1, an input wiring harness 2, an output wiring harness 3, a first plug-in 4, a second plug-in 5, a third plug-in 6, a fourth plug-in 7 and a fifth plug-in 8, the first plug-in 4 is fixedly connected to the top end of the input wiring harness 2, the first plug-in 4 is connected to the connector body 1 through the input wiring harness 2, the second plug-in 5 is fixedly connected to the top end of the output wiring harness 3, the second plug-in 5 is connected to the connector body 1 through the output wiring harness 3.

[0023] The first plug-in 4 is an OBC input plug-in, which has three holes, which are N, PE and L1 from right to left. The second plug-in 5 is an OBC output plug-in, which has two holes, the right side is the DC output positive pole, and the left side is the DC output negative pole. The third plug-in 6 is a DC output plug-in, which has two holes, the right side is the OBC output positive pole, and the left side is the OBC output negative pole. The fourth plug-in 7 is an AC / DC input plug-in, which has three holes, which are N, PE and L1 from right to left. The fifth plug-in 8 is a vehicle communication connector, which has eighteen holes on the display, and a digital mark is provided on the connector body 1, and the eighteen spaces correspond to the digital marks one by one.

[0024] A DCU module is provided inside the connector body 1, and the DCU module is connected to the fourth plug-in 7. When the DCU module identifies the AC charging mode, the relay does not operate and maintains this state. When the DCU module identifies the DC charging mode, the relay is normally closed when disconnected and normally open when closed. At this time, the pile can identify that the DC charging gun is connected to the charging socket. If the relay control fails, the relay fault is reported, and the working state is set to fault, the fault level is reported, and the diagnostic fault code DTC is stored.

[0025] When the DCU module detects that the resistance value is between 4.5K and 5.5K, the relay will not work and directly report the current resistance value. When the DCU detects that the resistance value is below 4K, it will open the normally closed state and close the normally open state. After completion, it will report the relay status but not the current resistance value. If the relay control fails, it will report a relay fault, set the working state to fault, report the fault level, and store the diagnostic fault code DTC.

[0026] At the beginning of charging, the charging voltage can be detected and the DC charging gun or AC charging gun can be identified. If it is a DC charging gun, it will be connected to the charging socket. If it is an AC charging gun, the relay will not work and will maintain this state. During charging, the resistance value can be detected. By detecting the temperature probe of the charging cable, the charging power can be dynamically adjusted to avoid the charging equipment from overheating and ensure the safety during charging. At the same time, the energy loss during charging can also be accurately controlled to avoid excessive loss and unnecessary waste.

[0027] Although the embodiments of the utility model have been shown and described, it should be emphasized that the above description is only an introduction and description of the use of the embodiments of the utility model, and does not limit the utility model in any form. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A control unit for charging a vehicle power battery, characterized in that: The invention comprises a connector body (1), an input wiring harness (2), an output wiring harness (3), a first plug-in (4), a second plug-in (5), a third plug-in (6), a fourth plug-in (7) and a fifth plug-in (8), wherein the first plug-in (4) is fixedly connected to the top end of the input wiring harness (2), the first plug-in (4) is connected to the connector body (1) via the input wiring harness (2), the second plug-in (5) is fixedly connected to the top end of the output wiring harness (3), the second plug-in (5) is connected to the connector body (1) via the output wiring harness (3).

2. A vehicle power battery charging control unit according to claim 1, characterized in that: The first plug-in (4) is an OBC input plug-in. The first plug-in (4) is provided with three holes, which are N, PE and L1 from right to left.

3. A vehicle power battery charging control unit according to claim 1, characterized in that: The second plug-in (5) is an OBC output plug-in. The second plug-in (5) is provided with two holes, the right side is a DC output positive pole, and the left side is a DC output negative pole.

4. A vehicle power battery charging control unit according to claim 1, characterized in that: The third plug-in (6) is a DC output plug-in. The third plug-in (6) is provided with two holes, the right side is the OBC output positive pole, and the left side is the OBC output negative pole.

5. A vehicle power battery charging control unit according to claim 1, characterized in that: The fourth plug-in (7) is an AC / DC input plug-in. The fourth plug-in (7) is provided with three holes, which are N, PE and L1 from right to left.

6. A vehicle power battery charging control unit according to claim 1, characterized in that: The fifth plug-in (8) is a vehicle communication connector. The fifth plug-in (8) is provided with eighteen hole positions. The connector body (1) is provided with digital identifications, and the eighteen spaces correspond to the digital identifications one by one.

7. A vehicle power battery charging control unit according to claim 1, characterized in that: The connector body (1) is internally provided with a DCU module, and the DCU module is connected to the fourth plug-in (7). When the DCU module identifies the AC charging mode, the relay does not operate and maintains this state. When the DCU module identifies the DC charging mode, the relay is normally closed when disconnected and normally open when closed. At this time, the charging pile can identify that the DC charging gun is connected to the charging socket. If the relay control fails, a relay fault is reported, and the working state is set to fault, the fault level is reported, and a diagnostic fault code DTC is stored.

8. A vehicle power battery charging control unit according to claim 7, characterized in that: When the DCU module detects that the resistance value is between 4.5K and 5.5K, the relay does not operate and directly reports the current resistance value. When the DCU detects that the resistance value is below 4K, the normally closed state is opened and the normally open state is closed. After completion, the relay status is reported instead of the current resistance value. If the relay control fails, a relay fault is reported, and the working state is set to fault, the fault level is reported, and the diagnostic fault code DTC is stored.

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