Power distribution management device, battery pack, and electric energy device

By directly connecting the current detection unit and the relay to form a series structure, the problem of high cost after integrating the shunt and the relay is solved, and the reliability and flexibility of current management are improved.

CN224520683UActive Publication Date: 2026-07-17BYD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BYD CO LTD
Filing Date
2025-06-30
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, shunts and relays need to be used together after integration, which results in high costs and requires modifications to the existing structure, making it difficult to apply flexibly in multi-relay scenarios.

Method used

By directly connecting the current detection unit to the relay's connection terminal to form a series structure, integration modifications are avoided. Direct connection methods such as bolts and welding are used to reduce costs and wiring harness failures.

Benefits of technology

It enables current detection without changing the existing structure, reducing costs and failures, and improving the reliability and flexibility of current management.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the application provides a power distribution management device, a battery pack and an electric energy equipment. The power distribution management device comprises a first switch and a current detection unit. The first connection end of the current detection unit is connected with the first connection end of the first switch. In the power distribution management device, the first connection end of the first switch is directly connected with the first connection end of the current detection unit, a series structure is formed, a wire harness is not needed, the cost can be reduced, and the failure caused by the wire harness can be reduced. Meanwhile, the two connection ends are directly connected, the internal structure of the existing switch and the current detection unit is avoided from being changed, and a new process or a new technology does not need to be introduced.
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Claims

1. A power distribution management device, characterized by, The power distribution management device includes: First switch (1); The current detection unit (2) is connected to the first connection terminal of the first switch (1).

2. The apparatus of claim 1, wherein, The power distribution management device also includes: The first conductive component (4) has a first end connected to the second connection end of the first switch (1), and the second end extends out of the housing (3); The second conductive component (5) has a first end connected to the second connection end of the current detection unit (2), and the second end extends to the outside of the housing (3).

3. The apparatus of claim 2, wherein, The first surface (313) of the housing (3) is provided with a first through hole (301) and a second through hole (302). The second end of the first conductive component (4) extends through the first through hole (301) to the outside of the housing (3), and the second end of the second conductive component (5) extends through the second through hole (302) to the outside of the housing (3).

4. The apparatus of claim 3, wherein, The power distribution management device also includes a second switch (6).

5. The apparatus of claim 4, wherein, The power distribution management device also includes: The third conductive component (7) has a first end connected to the first connection end of the second switch (6) and a second end extending outside the housing (3). The fourth conductive component (8) has a first end connected to the second connection end of the second switch (6) and the second end extends out of the housing (3).

6. The apparatus of claim 5, wherein, The first surface (313) of the housing (3) is provided with a third through hole (303) and a fourth through hole (304). The second end of the third conductive component (7) extends through the third through hole (303) to the outside of the housing (3), and the second end of the fourth conductive component (8) extends through the fourth through hole (304) to the outside of the housing (3).

7. The apparatus of claim 6, wherein, The first through hole (301), the second through hole (302), the third through hole (303) and the fourth through hole (304) are spaced apart along the first direction of the first surface (313).

8. The apparatus according to claim 4, characterized in that, The second switch (6), the current detection unit (2) and the first switch (1) are spaced apart in the housing (3) along the first direction of the first surface (313).

9. The apparatus of claim 8, wherein, The current detection unit (2) is located between the first switch (1) and the second switch (6).

10. The apparatus of claim 9, wherein, The housing (3) has at least one fifth through hole (305) on its second surface (314). The at least one fifth through hole (305) is located in the area between the first projection area of ​​the first switch (1) on the second surface (314) and the second projection area of ​​the second switch (6) on the second surface (314), and the boundary distance between the fifth through hole (305) and the first projection area and the second projection area is greater than 0 mm; The fifth through hole (305) is used for heat dissipation.

11. The apparatus of claim 1, wherein, The first connection terminal of the current detection unit (2) is connected to the first connection terminal of the first switch (1) through a connection component.

12. The apparatus of claim 11, wherein, The connecting assembly includes bolts; The first connection end of the current detection unit (2) is provided with a bolt hole, and the first connection end of the first switch (1) is provided with a threaded hole that is compatible with the bolt. The bolt passes through the bolt hole on the first connection end of the current detection unit (2) and connects to the threaded hole on the first connection end of the first switch (1).

13. The apparatus of claim 12, wherein, The bolt has a sixth through hole (306) in the third projection area on the third surface (315) of the housing (3) along its axis.

14. The apparatus of claim 13, wherein, The housing (3) also includes a hole cover (307); The shape of the hole cover (307) matches the sixth through hole (306) to be inserted into the sixth through hole (306).

15. The apparatus of claim 1, wherein, The first connection end of the current detection unit (2) is welded to the first connection end of the first switch (1).

16. The device of any one of claims 1-15, wherein, The housing (3) includes a first housing portion (311) and a second housing portion (312) other than the first housing portion (311). The first shell portion (311) and the second shell portion (312) are detachably connected.

17. The apparatus according to claim 16, characterized in that, A receiving cavity is formed between the first housing portion (311) and the second housing portion (312), and the first switch (1) and the current detection unit (2) are disposed in the receiving cavity.

18. The apparatus according to any one of claims 1-15, characterized in that, The first switch (1) is a relay.

19. The apparatus of claim 18, wherein, A seventh through hole (308) is provided on the second side (314) of the housing (3); the third connection end of the first switch (1) extends through the seventh through hole (308) to the outside of the housing (3).

20. The device of any one of claims 1-15, wherein, The current detection unit (2) is a shunt.

21. The apparatus of claim 20, wherein, The second side (314) of the housing (3) is provided with an eighth through hole (309); the third connection end of the current detection unit (2) extends through the eighth through hole (309) to the outside of the housing (3).

22. The device of any one of claims 4-10, wherein, The second switch (6) is a relay.

23. The apparatus of claim 22, wherein, A ninth through hole (310) is provided on the second side (314) of the housing (3); the third connection end of the second switch (6) extends through the ninth through hole (310) to the outside of the housing (3).

24. A battery pack, characterized by The battery pack includes a battery and a power distribution management device as described in any one of claims 1-23.

25. An electrical energy device, characterized in that, The electrical equipment includes the battery pack as described in claim 24.