Battery packs and electrical devices

Abstract

A battery pack (100) and an electrical device (1000). The battery pack (100) includes a tray (10) having a housing space (101) formed inside it; a separator, the separator separating the housing space (101) into at least two housing cavities and forming a clearance space; at least two electrical assemblies arranged correspondingly within the housing cavities; and an electrical connection assembly (20) including a first connecting member (210), a second connecting member (220), and an insulating adhesive member, wherein the first connecting member includes a first connecting end and a second connecting end; the second connecting member includes a third connecting end and a fourth connecting end; the second and fourth connecting ends are electrically connected and coated with an insulating adhesive member; and the second connecting end, the fourth connecting end, and the insulating adhesive member are housed within the clearance space.

Claims

1. A tray with an internal storage space, A separator located within the aforementioned containment space and separating the containment space into at least two containment cavities, wherein a clearance space is formed on the separator, At least two electrical assemblies arranged correspondingly within the at least two housing cavities, An electrical connection assembly, A first connecting member comprising a first connecting end and a second connecting end, wherein the first connecting end is adapted to be electrically connected to a first electrical assembly, A second connecting member having a third connecting end and a fourth connecting end, wherein the third connecting end is adapted to be electrically connected to a second electrical assembly, and 、 Insulating adhesive material, The electrical connection assembly and Equipped with, A battery pack in which the second and fourth connection ends are electrically connected and coated with the insulating adhesive member, and the second and fourth connection ends and the insulating adhesive member are housed within the avoidance space.

2. The electrical connection assembly further comprises a first housing, the first housing being made of an insulating material and having a receiving cavity formed inside, the receiving cavity having an opening side, The battery pack according to claim 1, wherein the second and fourth connection ends are adapted to be housed and electrically connected within the receiving cavity via the opening, and the opening is formed as an injection port for injecting the insulating adhesive into the receiving cavity to coat the second and fourth connection ends.

3. The battery pack according to claim 2, wherein the electrical connection assembly further comprises a second housing, the second housing being made of an insulating material and configured to cooperate with the first housing to close the opening side.

4. The first connecting member comprises a first connecting portion, a second connecting portion, and a first extension portion connected between the first connecting portion and the second connecting portion, wherein the free end of the first connecting portion forms the first connecting end, and the free end of the second connecting portion forms the second connecting end. The battery pack according to any one of claims 1 to 3, wherein at least one of the first connection portion and the second connection portion forms a bent portion together with the first extension portion.

5. The second connecting member comprises a third connecting portion, a fourth connecting portion, and a second extension portion connected between the third connecting portion and the fourth connecting portion, wherein the free end of the third connecting portion forms the third connecting end, and the free end of the fourth connecting portion forms the fourth connecting end. The battery pack according to any one of claims 1 to 4, wherein at least one of the third connection portion and the fourth connection portion forms a bent portion together with the second extension portion.

6. The aforementioned at least two accommodation cavities, A power distribution cavity housing a power distribution assembly, Adjacent to the aforementioned power distribution cavity is a battery cavity housing a battery assembly. Equipped with, The battery pack according to any one of claims 1 to 5, wherein the first connection terminal of the electrical connection assembly is electrically connected to the power distribution assembly, and the third connection terminal of the electrical connection assembly is electrically connected to the battery assembly.

7. The at least two housing cavities comprise two adjacent battery cavities, each of which houses the battery assembly. The battery pack according to any one of claims 1 to 5, wherein the first connection end and the third connection end of the electrical connection assembly are electrically connected to two battery assemblies in the adjacent battery cavity, respectively.

8. The tray comprises a bottom plate, a plurality of lateral beams, and a plurality of transverse beams, wherein the plurality of lateral beams are connected to the bottom plate and arranged along the circumference of the bottom plate, and the plurality of lateral beams and the bottom plate together define the storage space. The battery pack according to any one of claims 1 to 7, wherein the plurality of transverse beams are arranged spaced apart within the housing space to separate the housing space into a plurality of housing cavities independent of each other, one side of the transverse beams is fixedly connected to the bottom plate, and the avoidance space is a notch formed on the other opposing side of the transverse beam and penetrating the transverse beam, and the notch is configured as the avoidance space.

9. The at least two housing cavities comprise the power distribution cavity and a plurality of battery cavities, with the main positive electrode and the main negative electrode arranged within the power distribution cavity. The aforementioned battery A plurality of battery assemblies disposed within the battery cavity and having a first main connection terminal, wherein the first main connection terminal is electrically connected to one of the main positive electrode and the main negative electrode, A conductive bar, wherein one end of the conductive bar is connected to the plurality of battery assemblies, the other end of the conductive bar forms a second main connection end, and the second main connection end of the conductive bar extends into the power distribution cavity and is connected to the other of the main positive electrode and the main negative electrode. The battery pack according to claim 8, comprising:

10. The battery pack according to claim 9, wherein each of the battery assemblies comprises a plurality of cells connected in series, the plurality of battery assemblies are arranged in a first direction and connected in series with each other, the first main connection end is located on one of the two battery assemblies located on the two outermost sides, the other of the two battery assemblies located on the two outermost sides is connected to one end of the conductive bar, and the first main connection end and the second main connection end are located on the same side of the plurality of battery assemblies in the first direction.

11. The battery pack according to claim 10, wherein the plurality of cells in each of the battery assemblies are stacked and arranged in a second direction perpendicular to the first direction, and the conductive bar is located on one side of the plurality of battery assemblies in the second direction and extends in the first direction.

12. The battery pack according to claim 10, further comprising a first side plate disposed on one side of the battery assembly, wherein at least a portion of the first side plate is configured as a honeycomb structure, a positioning groove is disposed on the first side plate, and the conductive bar is mounted in the positioning groove.

13. The battery pack according to claim 12, wherein the positioning groove is located on the side of the first side plate facing away from the battery assembly.

14. The honeycomb structure is located on the side of the first side plate facing away from the battery assembly, and / or The battery pack according to claim 12, wherein the honeycomb structure is arranged at the bottom of the positioning groove.

15. The battery pack according to claim 12, further comprising a snap plate, the snap plate being snapped to the side of the first side plate facing away from the battery assembly, and restricting the conductive bar within the positioning groove.

16. The battery pack according to claim 12, wherein a wiring groove is provided on the first side plate and a sampling line is provided within the wiring groove.

17. The battery pack according to claim 12, further comprising a second side plate, wherein the first side plate and the second side plate are arranged on two opposing sides of the battery assembly, respectively.

18. The battery pack according to claim 12, comprising a plurality of first side plates, wherein the plurality of first side plates are arranged in a one-to-one correspondence with the plurality of battery assemblies, the positioning groove is provided in each of the first side plates, and the conductive bar is mounted in the positioning groove of the plurality of first side plates.

19. The battery pack according to claim 8, wherein the tray further comprises an epoxy resin coating, the epoxy resin coating being disposed on the surfaces of the bottom plate, the plurality of lateral beams, and the plurality of transverse beams facing the electrical assembly.

20. The battery pack according to claim 19, wherein the thickness of the epoxy resin coating is D1, and D1 satisfies 100 μm ≤ D1 ≤ 200 μm.

21. The tray further comprises a first fire-resistant member and / or a second fire-resistant member, wherein the first fire-resistant member is positioned on the side of the lateral beam facing the electrical assembly, and the epoxy resin coating on the lateral beam is positioned between the first fire-resistant member and the lateral beam. The battery pack according to claim 19, wherein the second fire-resistant member is arranged on two sides of the transverse beam in the thickness direction of the transverse beam, and the epoxy resin coating on the transverse beam is located between the second fire-resistant member and the transverse beam.

22. The battery pack according to claim 21, wherein the first fire-resistant member and / or the second fire-resistant member is a mica member, the thickness of the mica member is D2, and D2 satisfies 0.5 mm ≤ D2 ≤ 1 mm.

23. At least one discharge passage is located inside at least one of the plurality of lateral beams, and the discharge passage communicates with the containment space. The aforementioned battery pack The battery pack according to claim 8, further comprising at least one explosion-proof valve, the explosion-proof valve being positioned on the gas passage of the discharge passage and configured to discharge the gas in the discharge passage to the outside of the tray.

24. The plurality of first transverse beams are arranged within the housing cavity and spaced apart in the longitudinal direction of the bottom plate, separating the housing cavity into a plurality of independent cavities, the plurality of cavities comprising a first cavity and a plurality of second cavities, The battery pack according to claim 23, comprising a plurality of battery assemblies, wherein the plurality of second cavities correspond one-to-one with the plurality of battery assemblies, one end of the discharge passage communicates with the first cavity, the other end of the discharge passage communicates with the second cavity, and the explosion-proof valve is positioned opposite the first cavity of the lateral beam.

25. The battery pack according to claim 24, comprising a plurality of discharge passages, wherein the plurality of discharge passages are independent of each other, the plurality of discharge passages correspond one-to-one with the plurality of second cavities, and each of the discharge passages communicates with the first cavity and the corresponding second cavity, respectively.

26. The battery pack according to claim 8, further comprising a cover plate assembly disposed on the opening side of the tray, wherein the cover plate assembly comprises a first cover plate and a second cover plate, the second cover plate is disposed on the side of the first cover plate adjacent to the tray, and a heat-absorbing member is disposed between the first cover plate and the second cover plate.

27. The cover plate assembly further comprises, A sealing cover is mounted on the tray and covers the opening side of the tray, A maintenance plate, wherein a maintenance hole is provided in the sealing cover, the maintenance plate is detachably attached to the side of the sealing cover facing away from the tray, and covers the maintenance hole, A sealing elastic member is disposed between the maintenance plate and the sealing cover, and surrounds the maintenance hole. The battery pack according to claim 8, comprising:

28. The battery pack according to claim 27, wherein the maintenance plate is positioned adjacent to one end of the tray in the longitudinal direction of the tray, and a sealing bend portion is provided on the edge of the maintenance plate that extends to the outside of the end face of one end of the tray.

29. An upper cover positioned on the top of the tray, wherein the upper cover and the tray together define a storage space, and at least one reinforcing plate is positioned on the top of the upper cover, A reinforcing member disposed at the bottom of the tray and comprising at least one reinforcing portion, wherein the reinforcing portion is located on the transverse beam, the direction of extension of the reinforcing portion is the same as the direction of extension of the transverse beam, the reinforcing portion extends below the ends of the plurality of cells, and the direction of extension of the reinforcing portion is perpendicular to the direction of extension of the reinforcing plate, and The battery pack according to claim 10, further comprising the above.

30. The battery pack according to claim 29, wherein the reinforcing member comprises a plurality of reinforcing portions, and each of the plurality of reinforcing portions is located on the plurality of transverse beams.

31. The battery pack according to claim 30, further comprising a heat-retaining member disposed on the side of the reinforcing member away from the tray.

32. The battery pack according to claim 31, wherein at least one heat-insulating protrusion is disposed on the side surface of the heat-insulating member facing the tray, and the heat-insulating protrusion is located between two adjacent reinforcing portions.

33. The battery pack according to claim 32, wherein the upper surface of the heat-retaining protrusion is flush with the upper surface of the reinforcing portion.

34. The aforementioned tray The battery pack according to claim 29, further comprising a heat exchange plate positioned at the bottom of the tray frame, wherein the reinforcing member is positioned at the bottom of the heat exchange plate.

35. The battery pack according to claim 29, further comprising a protective plate positioned at the bottom of the reinforcing member.

36. The bottom plate is, The battery pack according to claim 8, comprising a plate body, wherein the plate body is configured to have a cooling channel and a converging channel for circulating a coolant, the cooling channel forms a plurality of cooling zones on the plate body, the converging channel forms an inlet flow converging zone and an outlet flow converging zone on the plate body, each of the cooling zones communicates with the inlet flow converging zone and the outlet flow converging zone, the plurality of cooling zones are connected in parallel to each other, a throttling structure is provided in at least one of the plurality of cooling zones, and the number of throttling structures in the plurality of cooling zones decreases from upstream to downstream in the flow direction of the coolant in the inlet flow converging zone.

37. The battery pack according to claim 36, wherein each of the cooling zones is configured to cool the same number of battery units.

38. Each of the aforementioned aperture structures is The battery pack according to claim 36, comprising a first throttling rib positioned on one of the two opposing side walls of the cooling channel and extending toward and away from the other of the two opposing side walls of the cooling channel.

39. Each of the aforementioned aperture structures is The battery pack according to claim 38, further comprising a second throttling rib positioned on the other of the two opposing side walls of the cooling channel, and extending toward and away from one of the two opposing side walls of the cooling channel.

40. The battery pack according to claim 39, wherein the first throttling rib and the second throttling rib are arranged at intervals in the longitudinal direction of the cooling channel in which the first throttling rib and the second throttling rib are located.

41. The battery pack according to claim 40, wherein in the cooling zone in which a plurality of the aperture structures are arranged, the first aperture rib and the second aperture rib are alternately arranged in the longitudinal direction of the cooling channel in which the first aperture rib and the second aperture rib are located.

42. The plate body is further configured to have a liquid inlet and a liquid outlet, the liquid inlet communicating with the inlet flow convergence zone, and the liquid outlet communicating with the outlet flow convergence zone. The battery pack according to claim 36, wherein the number of throttling structures in the plurality of cooling zones decreases as the distance between the cooling zone in which the throttling structures are located and the liquid inlet increases.

43. The plate body has a first direction and a second direction that are mutually orthogonal to each other. The battery pack according to claim 42, wherein the plurality of cooling zones are arranged continuously in the first direction, the inlet flow convergence zone and the outlet flow convergence zone are located on two sides of the plurality of cooling zones in the second direction, and the liquid inlet and the liquid outlet are located on the same side of the plate body in the first direction.

44. Each of the cooling zones has a first inlet, a second inlet, and an outlet, the first inlet and the second inlet each communicate with the inlet flow convergence zone, and the outlet communicates with the outlet flow convergence zone. The battery pack according to claim 43, wherein the first inlet and the second inlet are located adjacent to each other on two sides of the cooling zone in which the first inlet and the second inlet are located in the first direction, and the outlet is located between the first inlet and the second inlet in the first direction and is adjacent to each other.

45. The battery pack according to claim 44, wherein the throttling structure in each of the cooling zones is located adjacent to at least one of the first inlet, the second inlet, and the outlet.

46. Each of the cooling zones comprises a first sub-cooling zone and a second sub-cooling zone, the first sub-cooling zone and the second sub-cooling zone are arranged in the direction extending from the inlet flow convergence zone, the first sub-cooling zone is closer to the liquid inlet than the second sub-cooling zone, the first sub-cooling zone has a first inlet and communicates with the outlet, and the second sub-cooling zone has a second inlet and communicates with the outlet. In a plane perpendicular to the thickness direction of the cooling plate, the orthographic projection area of ​​the first sub-cooling zone is larger than the orthographic projection area of ​​the second sub-cooling zone, and / or The battery pack according to claim 44, wherein the number of aperture structures in the first sub-cooling zone is less than the number of aperture structures in the second sub-cooling zone.

47. The plate body is configured to have an inlet flow-inhibiting rib, the inlet flow-inhibiting rib is positioned on the bottom wall of the convergence channel in the inlet flow convergence zone, the inlet flow-inhibiting rib extends in the direction of extension of the inlet flow convergence zone, and the inlet flow-inhibiting rib is spaced apart from the side wall of the convergence channel where the inlet flow-inhibiting rib is located. The battery pack according to claim 44, wherein at least one first notch is disposed on the inlet flow-inhibiting rib in the direction of extension of the inlet flow-inhibiting rib.

48. The battery pack according to claim 47, comprising a plurality of inlet flow-inhibiting ribs, wherein the plurality of inlet flow-inhibiting ribs are spaced apart in the width direction of the convergence channel in which the inlet flow-inhibiting ribs are located, and the first notches of adjacent inlet flow-inhibiting ribs are arranged alternately in the extending direction of the convergence channel in which the inlet flow-inhibiting ribs are located.

49. The first notch is arranged alternately with the first inlet in the direction of extension of the inlet flow convergence zone. The battery pack according to claim 47, wherein the first notch is arranged alternately with the second inlet in the direction of extension of the inlet flow convergence zone.

50. The plate body is configured to have an outlet flow inhibiting rib, the outlet flow inhibiting rib is positioned on the bottom wall of the converging channel in the outlet flow convergence zone, the outlet flow inhibiting rib extends in the direction of extension of the outlet flow convergence zone, and the outlet flow inhibiting rib is spaced apart from the side wall of the converging channel where the outlet flow inhibiting rib is located. The battery pack according to claim 42, wherein at least one second notch is disposed on the outlet flow-inhibiting rib in the direction of extension of the outlet flow-inhibiting rib.

51. The battery pack according to claim 50, comprising a plurality of outlet flow inhibiting ribs, wherein the plurality of outlet flow inhibiting ribs are spaced apart in the width direction of the converging channel in which the outlet flow inhibiting ribs are located, and the second notches of adjacent outlet flow inhibiting ribs are arranged alternately in the extending direction of the converging channel in which the outlet flow inhibiting ribs are located.

52. The battery pack according to claim 36, wherein at least one fixed zone is further formed on the plate body, and the at least one fixed zone and the plurality of cooling zones are alternately arranged in the direction of extension of the inlet flow convergence zone.

53. An electrical device comprising an electrical device and a battery pack according to any one of claims 1 to 52, wherein the battery pack is electrically connected to the electrical device and supplies power to the electrical device.

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