Battery pack high-voltage module

Abstract

The battery pack high-voltage module comprises a base, copper bars, a wire harness and an upper cover, a pre-charging resistor, a main positive relay, a main negative relay, a pre-charging relay, a current sensor and a fuse are installed on the base, a first output positive copper bar and a battery positive copper bar are fixed on the main positive relay, and a second output positive copper bar and a battery negative copper bar are fixed on the upper cover. The second switching copper bar and the output negative copper bar are fixed to the main negative relay, the battery negative copper bar and the first switching copper bar are fixed to the fuse, the second output positive copper bar is fixed to the side of the first output positive copper bar, and the low-voltage control harness is connected to the main positive relay, the main negative relay, the pre-charging relay and the current sensor. The high-voltage acquisition wire harness is connected to the battery positive copper bar, the pre-charging relay, the first output positive copper bar, the second switching copper bar and the output negative copper bar, the first pre-charging wire harness is connected with the pre-charging relay and the pre-charging resistor, and the second pre-charging wire harness is connected with the pre-charging resistor and the output negative copper bar.

Description

Technical fields:

[0001] This utility model relates to a high-voltage module for a battery pack, which belongs to the field of high-voltage power distribution technology. Background technology:

[0002] A battery pack high-voltage module (BDU) is a high-voltage distribution box used to control the current flow of a battery system. To fulfill this function, a battery pack high-voltage module typically includes a housing, fuses, a precharge circuit, and relays.

[0003] The high-voltage circuit of existing battery packs is susceptible to damage from overheating, over-discharging, and overcharging. Furthermore, the high-voltage circuit of existing battery packs has low integration, occupies a lot of internal space, and is difficult to maintain and debug later.

[0004] Therefore, it is indeed necessary to improve existing technologies to address their shortcomings. Utility Model Content:

[0005] This utility model provides a high-voltage module for battery packs to solve the problems existing in the prior art. It can solve the defects of existing high-voltage modules for battery packs, such as low integration, large space occupation, and difficulty in maintenance and replacement.

[0006] The technical solution adopted by this utility model is as follows: a high-voltage module for a battery pack, including a base, copper busbars, wiring harnesses, and a top cover mounted together with the base. The base is equipped with a pre-charge resistor, a main positive relay, a main negative relay, a pre-charge relay, a current sensor, and a fuse at intervals. The copper busbars include a battery positive copper busbar, a battery negative copper busbar, a first adapter copper busbar, a second adapter copper busbar, a first output positive copper busbar, a second output positive copper busbar, and an output negative copper busbar. The wiring harness includes a low-voltage control wiring harness, a high-voltage acquisition wiring harness, a first pre-charge wiring harness, and a second pre-charge wiring harness. The first output positive copper busbar and the battery positive copper busbar are respectively bolted to the first and second ends of the main positive relay. The second adapter copper busbar and the output negative copper busbar are respectively bolted to the first and second ends of the main negative relay. At the two ends, the battery negative copper busbar and the first adapter copper busbar are respectively fixed to the first end and the second end of the fuse by bolts. The second output positive copper busbar is fixed to the side of the first output positive copper busbar by bolts. The low-voltage control harness includes several low-voltage branch harnesses, which are respectively connected to the main positive relay, the main negative relay, the precharge relay and the current sensor. The high-voltage acquisition harness includes several high-voltage branch harnesses, which are respectively connected to the battery positive copper busbar, the precharge relay, the first output positive copper busbar, the second adapter copper busbar and the output negative copper busbar. One end of the first precharge harness is connected to the precharge relay and the other end is connected to the precharge resistor. One end of the second precharge harness is connected to the precharge resistor and the other end is connected to the output negative copper busbar.

[0007] Furthermore, the first end of the battery negative copper busbar is fixed to the base with bolts as the battery negative terminal interface, and the second end of the battery negative copper busbar is located above the first end of the fuse and the fuse and the battery negative copper busbar are fixed to the base with bolts.

[0008] Furthermore, the first end of the first adapter copper busbar is located above the second end of the fuse, and the fuse and the first adapter copper busbar are fixed to the base by bolts.

[0009] Furthermore, the second end of the first adapter copper busbar is located below the current sensor, and the first end of the second adapter copper busbar is also located below the current sensor. The second adapter copper busbar and the first adapter copper busbar are fixed together by bolts.

[0010] Furthermore, the second end of the second adapter copper busbar is located above the first end of the main negative relay and is fixed together with the main negative relay by bolts. The first end of the output negative copper busbar is located above the second end of the main negative relay and is fixed together with the main negative relay by bolts. The second end of the output negative copper busbar is fixed to the base by bolts as the output negative terminal interface.

[0011] Furthermore, the first end of the second output positive copper busbar is fixed to the base with bolts as an output negative interface, and the second end of the second output positive copper busbar is located to the side of the first output positive copper busbar and is fixed together with the first output positive copper busbar with bolts.

[0012] Furthermore, the first end of the first output positive copper busbar is located to the side of the second output positive copper busbar and the first output positive copper busbar and the second output positive copper busbar are fixed together by bolts, and the second end of the first output positive copper busbar is located above the first end of the main positive relay and the first output positive copper busbar and the main positive relay are fixed together by bolts.

[0013] Furthermore, the first end of the positive copper busbar is located above the second end of the main positive relay and is fixed together with the main positive relay by bolts. The second end of the positive copper busbar is fixed to the base by bolts as the positive terminal interface of the battery.

[0014] This utility model has the following beneficial effects:

[0015] (1) The high voltage module of the battery pack of this utility model integrates electrical components through the base and the top cover, which can effectively reduce the product size;

[0016] (2) All components in the high voltage module of the battery pack of this utility model are fixed to the base by bolts. When the BDU of the user's vehicle has a problem, the BDU can be replaced as a whole, shortening the repair time.

[0017] (3) The integration of various components on the base provides better shock resistance and avoids problems caused by vibration during vehicle operation. Attached image description:

[0018] Figure 1 This is an exploded view of the high-voltage module of the battery pack of this utility model.

[0019] Figure 2 This is a schematic diagram of the assembly of the high-voltage module of the battery pack of this utility model. Detailed implementation method:

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] This utility model's high-voltage battery pack module includes a base 1, copper busbars, wiring harnesses, and a top cover 2 mounted together with the base 1. A pre-charge resistor 10, a main positive relay 11, a main negative relay 12, a pre-charge relay 13, a current sensor 14, and a fuse 15 are installed at intervals on the base 1. The copper busbars include a battery positive copper busbar 3, a battery negative copper busbar 4, a first adapter copper busbar 5, a second adapter copper busbar 6, a first output positive copper busbar 7, a second output positive copper busbar 8, and an output negative copper busbar 9.

[0022] The fuse 15 is located between the battery negative copper busbar 4 and the first adapter copper busbar 5. The first end of the battery negative copper busbar 4 is fixed to the base 1 by bolts as the battery negative terminal interface. The second end of the battery negative copper busbar 4 is located above the first end of the fuse 15 and is fixed to the base 1 by bolts. The first end of the first adapter copper busbar 5 is located above the second end of the fuse 15 and is fixed to the base 1 by bolts.

[0023] The second end of the first adapter copper busbar 5 is located below the current sensor 14, and the first end of the second adapter copper busbar 6 is also located below the current sensor 14. The second adapter copper busbar 6 and the first adapter copper busbar 5 are fixed together by bolts. The second end of the second adapter copper busbar 6 is located above the first end of the main negative relay 12, and the second adapter copper busbar 6 and the main negative relay 12 are fixed together by bolts.

[0024] The first end of the output negative copper busbar 9 is located above the second end of the main negative relay 12 and is fixed together with the main negative relay 12 by bolts. The second end of the output negative copper busbar 9 is fixed to the base 1 by bolts as the output negative terminal interface.

[0025] The first end of the second output positive copper busbar 8 is fixed to the base 1 by bolts as the output negative terminal interface. The second end of the second output positive copper busbar 8 is located on the side of the first output positive copper busbar 7 and is fixed together with the first output positive copper busbar 7 by bolts.

[0026] The first end of the first output positive copper busbar 7 is located to the side of the second output positive copper busbar 8 and is fixed together with the second output positive copper busbar 8 by bolts. The second end of the first output positive copper busbar 7 is located above the first end of the main positive relay 11 and is fixed together with the main positive relay 11 by bolts.

[0027] The first end of the positive copper busbar 3 is located above the second end of the main positive relay 11 and is fixed together with the main positive relay 11 by bolts. The second end of the positive copper busbar 3 is fixed to the base 1 by bolts as the positive terminal interface of the battery.

[0028] The wiring harness includes a low-voltage control wiring harness 16, a high-voltage acquisition wiring harness 17, a first pre-charge wiring harness 18, and a second pre-charge wiring harness 19. The low-voltage control wiring harness 16 includes several low-voltage branch wiring harnesses, which are respectively connected to the main positive relay 11, the main negative relay 12, the pre-charge relay 13, and the current sensor 14.

[0029] The high-voltage acquisition harness 17 includes several high-voltage branch harnesses, which are respectively connected to the battery positive copper busbar 3, the precharge relay 13, the first output positive copper busbar 7, the second adapter copper busbar 6, and the output negative copper busbar 9.

[0030] One end of the first precharge harness 18 is connected to the precharge relay 13, and the other end is connected to the precharge resistor 10. One end of the second precharge harness 19 is connected to the precharge resistor 10, and the other end is connected to the output negative copper busbar 9.

[0031] This utility model's high-voltage battery pack module effectively reduces product size by highly integrating electrical components on the base 1 and the top cover 2. All components in this high-voltage battery pack module are bolted to the base 1, allowing for complete BDU replacement in case of a problem with the user's vehicle's BDU, shortening repair time. The integration of all components on the base provides better shock resistance, preventing problems caused by vibrations during vehicle operation.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A high-voltage module for a battery pack, characterized in that: The system includes a base (1), copper busbars, wiring harnesses, and a top cover (2) mounted together with the base (1). The base (1) is equipped with a pre-charge resistor (10), a main positive relay (11), a main negative relay (12), a pre-charge relay (13), a current sensor (14), and a fuse (15). The copper busbars include a battery positive copper busbar (3), a battery negative copper busbar (4), a first adapter copper busbar (5), a second adapter copper busbar (6), a first output positive copper busbar (7), and a second output positive copper busbar (8). The wiring harness includes a low-voltage control harness (16), a high-voltage acquisition harness (17), a first pre-charge harness (18), and a second pre-charge harness (19). The first output positive copper busbar (7) and the battery positive copper busbar (3) are respectively fixed to the first and second ends of the main positive relay (11) by bolts. The second adapter copper busbar (6) and the output negative copper busbar (9) are respectively fixed to the first and second ends of the main negative relay (12) by bolts. The battery negative copper busbar (4) and the first adapter copper busbar (5) are respectively fixed to the first and second ends of the fuse (15) by bolts. The second output positive copper busbar (8) is fixed to the side of the first output positive copper busbar (7) by bolts. The low-voltage control harness (16) includes several low-voltage branch harnesses, which are respectively connected to the main positive relay (11), the main negative relay (12), the pre-charge relay (13), and the current sensor (14). The high-voltage acquisition harness... The bundle (17) includes several high-voltage branch bundles, which are respectively connected to the battery positive copper busbar (3), the precharge relay (13), the first output positive copper busbar (7), the second adapter copper busbar (6) and the output negative copper busbar (9). One end of the first precharge bundle (18) is connected to the precharge relay (13) and the other end is connected to the precharge resistor (10). One end of the second precharge bundle (19) is connected to the precharge resistor (10) and the other end is connected to the output negative copper busbar (9).

2. The high-voltage module of the battery pack as described in claim 1, characterized in that: The first end of the battery negative copper busbar (4) is fixed to the base (1) by bolts as the battery negative terminal interface. The second end of the battery negative copper busbar (4) is located above the first end of the fuse (15) and the fuse (15) and the battery negative copper busbar (4) are fixed to the base (1) by bolts.

3. The high-voltage module of the battery pack as described in claim 2, characterized in that: The first end of the first adapter copper busbar (5) is located above the second end of the fuse (15) and the fuse (15) and the first adapter copper busbar (5) are fixed to the base (1) by bolts.

4. The high-voltage module of the battery pack as described in claim 3, characterized in that: The second end of the first adapter copper busbar (5) is located below the current sensor (14), and the first end of the second adapter copper busbar (6) is also located below the current sensor (14). The second adapter copper busbar (6) and the first adapter copper busbar (5) are fixed together by bolts.

5. The high-voltage module of the battery pack as described in claim 4, characterized in that: The second end of the second adapter copper busbar (6) is located above the first end of the main negative relay (12) and is fixed together with the main negative relay (12) by bolts. The first end of the output negative copper busbar (9) is located above the second end of the main negative relay (12) and is fixed together with the main negative relay (12) by bolts. The second end of the output negative copper busbar (9) is fixed to the base (1) by bolts as the output negative terminal interface.

6. The high-voltage module of the battery pack as described in claim 5, characterized in that: The first end of the second output positive copper busbar (8) is fixed to the base (1) by bolts as the output negative terminal interface. The second end of the second output positive copper busbar (8) is located on the side of the first output positive copper busbar (7) and the second output positive copper busbar (8) is fixed together with the first output positive copper busbar (7) by bolts.

7. The high-voltage module of the battery pack as described in claim 6, characterized in that: The first end of the first output positive copper busbar (7) is located on the side of the second output positive copper busbar (8) and the first output positive copper busbar (7) and the second output positive copper busbar (8) are fixed together by bolts. The second end of the first output positive copper busbar (7) is located above the first end of the main positive relay (11) and the first output positive copper busbar (7) and the main positive relay (11) are fixed together by bolts.

8. The high-voltage module of the battery pack as described in claim 7, characterized in that: The first end of the positive copper busbar (3) is located above the second end of the main positive relay (11) and is fixed together with the main positive relay (11) by bolts. The second end of the positive copper busbar (3) is fixed to the base (1) by bolts as the positive terminal interface of the battery.

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