Battery pack connecting busbar and busbar connecting assembly

Abstract

The utility model provides a battery pack connecting busbar and a busbar connecting assembly. The battery pack connecting busbar comprises a first connecting end, a first overlapping section, a second overlapping section and a second connecting end which are connected in sequence, the first connecting end is used for being electrically connected to a pole of a battery pack, and the second connecting end is used for being electrically connected to a control circuit board; a first overlapping surface of the first overlapping section sinks inwards to form a limiting clamping groove, and a second overlapping surface of the first overlapping section protrudes outwards to form a limiting bulge; an alignment hole is formed in the second overlapping section; when a plurality of battery pack connecting busbars are stacked together, the limiting clamping grooves in the first lapping surfaces can be matched with the limiting bumps of the second lapping surfaces of other adjacent battery pack connecting busbars, and the alignment holes of each battery pack connecting busbar can be respectively opposite to the alignment holes of other adjacent battery pack connecting busbars. And all the alignment holes are communicated and are jointly matched with positioning columns of the battery packs for installation, so that the situation that adjacent battery pack connecting busbars slip and loosen is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular to a battery pack connecting busbar and a busbar connecting assembly. Background Art

[0002] With the mass production of new energy vehicles, people have higher requirements for the electrical connection strength between the battery pack and the control circuit board in the car. In order to prevent the control circuit board and the battery pack from loosening and disconnecting during driving, some manufacturers have made further research and development.

[0003] For example, Chinese patent document CN116913598A discloses a connecting busbar including a conductive substrate, a first fireproof belt and a second fireproof belt, the conductive substrate including a connecting portion, and the two ends of the connecting portion are respectively connected to connecting ends; the first fireproof belt is wrapped around the outer wall of the connecting portion to form multiple turns of the first fireproof ring, and along the length direction of the connecting portion, the multiple turns of the first fireproof ring are stacked in sequence; the second fireproof belt is wrapped around the outside of the first fireproof belt to form multiple turns of the second fireproof ring, and along the length direction of the connecting portion, the multiple turns of the second fireproof ring are stacked in sequence, and the second fireproof ring covers the connecting seam of two adjacent first fireproof rings.

[0004] However, the above busbar connection design still has the following problems:

[0005] Although the above-mentioned connecting busbar can tightly connect the battery pack and the control circuit board through the connecting part, due to the limited placement space of the battery in the car and the complex electrical connection relationship between the battery pack and each control circuit board, it is usually necessary to stack multiple connecting busbars together in the car for use. The stacked connecting busbars have low structural strength due to structural limitations, and are therefore prone to slipping and loosening during use. Utility Model Content

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a battery pack connection busbar and busbar connection assembly that are more secure and convenient to stack.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A battery pack connection busbar, comprising a first connection end, a first overlapping section, a second overlapping section, and a second connection end connected in sequence, wherein the first connection end is used to electrically connect to a pole of the battery pack, and the second connection end is used to electrically connect to a control circuit board;

[0009] The first overlapping surface of the first overlapping section is recessed inward to form a limiting slot, and the second overlapping surface of the first overlapping section is convex outward to form a limiting bulge, and the limiting bulge is used to cooperate with the limiting slot of the busbar connected to other adjacent battery packs; the second overlapping section is provided with an alignment hole; the alignment hole is used to be arranged relative to the alignment hole of the busbar connected to other adjacent battery packs, so as to cooperate with the positioning column installation of the battery pack.

[0010] In one embodiment, two sides of the second overlapping section are respectively provided with protruding blocks, and each of the blocks is used to be accommodated in a card slot of the battery pack.

[0011] In one embodiment, the second overlapping section is provided with a supporting rib; the supporting rib is provided on the side of the second overlapping section and extends along the length direction of the second overlapping section; the supporting rib is used to support the bayonet of the battery pack.

[0012] In one embodiment, the battery pack connecting busbar further includes a receiving section, the first connecting end is connected to the first overlapping section through the receiving section, one end of the receiving section is set at an angle to the first connecting end, and the other end of the receiving section is set at an angle to the first overlapping section.

[0013] In one embodiment, the first connecting end is provided with a sleeve hole, and the sleeve hole is used to be sleeved on the pole of the battery pack.

[0014] In one embodiment, the battery pack connecting busbar further includes a fastening nut; the fastening nut is arranged at the sleeve hole and is used to be screwed to the end of the pole of the battery pack.

[0015] In one embodiment, the first connecting end is provided with a marking area, the marking area is arranged near the periphery of the ferrule, and the marking area is used for coating an identification dye.

[0016] In one embodiment, a welding hole is formed at the second connection end, and the welding hole is used for welding to a control circuit board.

[0017] In one embodiment, a wire passing square hole is provided at the second connection end, the wire passing square hole is arranged close to the welding hole, and the wire passing square hole is used to pass the management signal line of the battery pack.

[0018] A busbar connection assembly includes the battery pack connection busbar of any of the above embodiments.

[0019] Compared with the prior art, the present disclosure has at least the following advantages:

[0020] The above-mentioned battery pack connecting busbar has a first overlapping surface of the first overlapping section that is recessed inward to form a limiting slot, and a second overlapping surface of the first overlapping section that is convex outward to form a limiting bulge. When multiple battery pack connecting busbars are stacked together, the limiting slot on the first overlapping surface can cooperate with the limiting bulge on the second overlapping surface of other adjacent battery pack connecting busbars, thereby limiting the relative slippage between the first overlapping surface and the second overlapping surface. In addition, because alignment holes are provided on the second overlapping section, when multiple battery pack connecting busbars are stacked together, the alignment holes of each battery pack connecting busbar can be respectively arranged relative to the alignment holes of other adjacent battery pack connecting busbars, so that all the alignment holes are connected and cooperate with the positioning column installation of the battery pack, thereby making the connection between each battery pack connecting busbar tighter, and ultimately reducing the looseness of the adjacent battery pack connecting busbars. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic structural diagram of a battery pack connected to a busbar according to an embodiment of the present disclosure;

[0023] Figure 2 for Figure 1 The diagram shows two battery packs connected to the busbars stacked together;

[0024] Figure 3 for Figure 1 The picture shows the battery pack connected to the busbar.

[0025] Figure numerals: 10, battery pack connecting busbar; 100, first connecting end; 110, sleeve hole; 120, marking area; 102, receiving section; 200, first overlapping section; 210, limiting slot; 220, limiting bulge; 300, second overlapping section; 310, alignment hole; 320, block; 330, expansion rib; 400, second connecting end; 410, welding hole; 420, wire-passing square hole; 500, fastening nut. DETAILED DESCRIPTION

[0026] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure pertains. The terms used herein in the specification of this disclosure are intended only to describe specific embodiments and are not intended to limit this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure is further described in detail below with reference to specific embodiments:

[0030] like Figure 1 and Figure 2 As shown, a battery pack connection busbar 10 of an embodiment includes a first connection end 100, a first overlapping section 200, a second overlapping section 300 and a second connection end 400 connected in sequence, the first connection end 100 is used to electrically connect to the pole of the battery pack, and the second connection end 400 is used to electrically connect to the control circuit board; the first overlapping surface of the first overlapping section 200 is recessed inward to form a limiting slot 210, and the second overlapping surface of the first overlapping section 200 is convex outward to form a limiting bulge 220, and the limiting bulge 220 is used to cooperate with the limiting slots of other adjacent battery pack connection busbars; the second overlapping section 300 is provided with an alignment hole 310; the alignment hole 310 is used to be arranged relative to the alignment holes of other adjacent battery pack connection busbars, so as to cooperate with the positioning column installation of the battery pack.

[0031] It can be understood that compared with the prior art, since the first overlapping surface of the first overlapping section 200 is recessed inward to form the limiting groove 210, and the second overlapping surface of the first overlapping section 200 is convex outward to form the limiting bulge 220, combined with Figure 2As shown, when multiple battery pack connecting busbars 10 are stacked together, the limiting slots 210 on the first overlapping surface can cooperate with the limiting bulges on the second overlapping surfaces of other adjacent battery pack connecting busbars, thereby limiting the relative slippage between the first overlapping surface and the second overlapping surface. Because the second overlapping section 300 is provided with alignment holes 310, when multiple battery pack connecting busbars 10 are stacked together, the alignment holes 310 of each battery pack connecting busbar 10 can be respectively arranged relative to the alignment holes of other adjacent battery pack connecting busbars, so that all the alignment holes 310 are connected and cooperate with the positioning column installation of the battery pack, thereby making the connection between each battery pack connecting busbar 10 tighter, and ultimately reducing the looseness of the adjacent battery pack connecting busbars 10.

[0032] Combine Figure 1 As shown, in one embodiment, a locking block 320 is provided on each side of the second overlapping section 300, and each locking block 320 is respectively used to be received in a slot of the battery pack. It can be understood that because the locking blocks 320 are provided on each side of the second overlapping section 300, each locking block 320 is received in a slot of the battery pack, which can limit the lateral loosening of the battery pack connecting busbar 10. When multiple battery pack connecting busbars 10 are stacked, the second overlapping section 300 of each battery pack connecting busbar 10 can be tightly attached to the second overlapping section 300 of the adjacent battery pack connecting busbar 10, making it less likely to deviate and loosen in the lateral direction.

[0033] Combine Figure 1 and Figure 2 As shown, in one embodiment, the second overlapping section 300 is provided with a supporting rib 330; the supporting rib 330 is located on the side of the second overlapping section 300 and extends along the length of the second overlapping section 300; the supporting rib 330 is used to support the battery pack's latch. It can be understood that by providing the supporting rib 330 on the side of the second overlapping section 300, the second overlapping section 300 can be supported and locked in the battery pack's latch, thereby further constraining the stacking position of each layer of battery pack connecting busbars 10, ensuring a more accurate stacking position of multiple battery pack connecting busbars 10.

[0034] Combine Figure 1As shown, in one embodiment, the battery pack connecting busbar 10 further includes a receiving section 102, and the first connecting end 100 is connected to the first overlapping section 200 via the receiving section 102. One end of the receiving section 102 is arranged at an angle to the first connecting end 100, and the other end of the receiving section 102 is arranged at an angle to the first overlapping section 200. It can be understood that by arranging one end of the receiving section 102 at an angle to the first connecting end 100 and the other end of the receiving section 102 at an angle to the first overlapping section 200, a height difference can be generated between the first overlapping section 200 and the first connecting end 100. By setting the height and angle of the receiving section 102 according to actual needs, the height difference between the first overlapping section 200 and the first connecting end 100 can be adjusted to accommodate the position of the battery pack terminal.

[0035] Combine Figure 1 As shown, in one embodiment, the first connection end 100 is provided with a sleeve hole 110, which is used to be sleeved onto the battery pack terminal. It can be understood that by providing the sleeve hole 110 on the first connection end 100 of the battery pack connecting busbar 10, it can be securely sleeved onto the battery pack terminal through the sleeve hole 110, thereby achieving electrical connection between the battery pack connecting busbar 10 and the battery pack terminal.

[0036] Combine Figure 1 As shown, in one embodiment, the battery pack busbar 10 further includes a fastening nut 500; the fastening nut 500 is disposed at the sleeve hole 110 and is used to be screwed onto the end of the battery pack terminal. It can be understood that by providing the fastening nut 500 at the sleeve hole 110, when the sleeve hole 110 is sleeved on the battery pack terminal, the fastening nut 500 can be screwed onto the end of the battery pack terminal, thereby achieving a tighter connection between the first connecting end 100 and the battery pack terminal, which can improve the electrical conductivity between the first connecting end 100 and the battery pack terminal, thereby reducing current loss.

[0037] Combine Figure 2 As shown, in one embodiment, the first connection end 100 is provided with a marking area 120, which is arranged near the periphery of the sleeve hole 110, and the marking area 120 is used to apply an identification dye. It can be understood that when multiple battery pack connection busbars 10 are stacked together, different identification dyes are applied to the marking areas 120 of the first connection ends 100 of different battery pack connection busbars 10. For example, by applying blue dye to the marking area 120 of the first connection end 100 of one battery pack connection busbar 10 and applying red dye to the marking area 120 of the first connection end 100 of another battery pack connection busbar 10, the first connection ends 100 of different battery pack connection busbars 10 can be easily distinguished, thereby avoiding the situation where the sleeve holes 110 of each battery pack connection busbar 10 are connected incorrectly.

[0038] Combine Figure 1 As shown, in one embodiment, the second connection end 400 is provided with a welding hole 410 for welding to the control circuit board. It can be understood that since the second connection end 400 is tightly connected to the control circuit board through the welding hole 410, the second connection end 400 and the control circuit board can be more efficiently conductive, thereby reducing current loss.

[0039] Combine Figure 1 As shown, in one embodiment, the second connection end 400 is provided with a wire-passing square hole 420, which is located adjacent to the welding hole 410. The wire-passing square hole 420 is used to pass the battery pack's management signal line. It can be understood that because the wire-passing square hole 420 is located adjacent to the welding hole 410, when the welding hole 410 is welded to the control circuit board, the battery pack's management signal line can pass through the wire-passing square hole 420 and be electrically connected to the control circuit board. This allows the control circuit board to monitor the battery voltage via the management signal line, preventing overcharging or discharging and ensuring safe use of the battery.

[0040] Combine Figure 1 As shown, in one embodiment, the first connection end 100, the first overlapping section 200, the second overlapping section 300, and the second connection end 400 are integrally connected. It can be understood that because the first connection end 100, the first overlapping section 200, the second overlapping section 300, and the second connection end 400 are integrally connected, the battery pack busbar 10 has a higher connection strength, making it less likely to break during the connection between the battery pack terminal and the control circuit board, and more durable.

[0041] Combine Figure 1 As shown, the present disclosure further provides a busbar connection assembly, including the battery pack connection busbar 10 of any of the above embodiments. It can be understood that by applying the battery pack connection busbar 10 of the present disclosure in the busbar connection assembly, since the first overlapping surface of the first overlapping section 200 is recessed inward to form a limiting card groove 210, and the second overlapping surface of the first overlapping section 200 is convex outward to form a limiting bulge 220, when multiple battery pack connection busbars 10 are stacked together, the limiting card groove 210 on the first overlapping surface can cooperate with the limiting bulge of the second overlapping surface of other adjacent battery pack connection busbars, thereby limiting the relative slippage between the first overlapping surface and the second overlapping surface. Because the second overlapping section 300 is provided with an alignment hole 310, when multiple battery pack connection busbars 10 are stacked together, the alignment hole 310 of each battery pack connection busbar 10 can be respectively arranged relative to the alignment holes of other adjacent battery pack connection busbars, so that all the alignment holes 310 are connected and cooperate with the positioning column installation of the battery pack, thereby making the connection between each battery pack connection busbar 10 tighter, and ultimately reducing the slippage and looseness of adjacent battery pack connection busbars 10.

[0042] Compared with the prior art, the present disclosure has at least the following advantages:

[0043] The battery pack connecting busbar 10 mentioned above has a first overlapping surface of the first overlapping section 200 that is recessed inward to form a limiting slot 210, and a second overlapping surface of the first overlapping section 200 that is convex outward to form a limiting bulge 220. When multiple battery pack connecting busbars 10 are stacked together, the limiting slot 210 on the first overlapping surface can cooperate with the limiting bulge on the second overlapping surface of other adjacent battery pack connecting busbars, thereby limiting the relative slippage between the first overlapping surface and the second overlapping surface. In addition, because the second overlapping section 300 is provided with alignment holes 310, when multiple battery pack connecting busbars 10 are stacked together, the alignment holes 310 of each battery pack connecting busbar 10 can be respectively arranged relative to the alignment holes of other adjacent battery pack connecting busbars, so that all the alignment holes 310 are connected and cooperate with the positioning column installation of the battery pack, thereby making the connection between each battery pack connecting busbar 10 tighter, and ultimately reducing the looseness of the adjacent battery pack connecting busbars 10.

[0044] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the scope of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A battery pack connecting busbar, characterized in that: It includes a first connecting end, a first overlapping section, a second overlapping section and a second connecting end connected in sequence, wherein the first connecting end is used to be electrically connected to the pole of the battery pack, and the second connecting end is used to be electrically connected to the control circuit board; The first overlapping surface of the first overlapping section is recessed inward to form a limiting slot, and the second overlapping surface of the first overlapping section is convex outward to form a limiting bulge, and the limiting bulge is used to cooperate with the limiting slot of the busbar connected to other adjacent battery packs; the second overlapping section is provided with an alignment hole; the alignment hole is used to be arranged relative to the alignment hole of the busbar connected to other adjacent battery packs, so as to cooperate with the positioning column installation of the battery pack.

2. The battery pack connecting busbar according to claim 1, characterized in that: A card block is protruded from both sides of the second overlapping section, and each card block is used to be accommodated in a card slot of the battery pack.

3. The battery pack connecting busbar according to claim 1, characterized in that: The second overlapping section is provided with a supporting rib; the supporting rib is provided on the side of the second overlapping section and extends along the length direction of the second overlapping section; the supporting rib is used to support the bayonet of the battery pack.

4. The battery pack connecting busbar according to claim 1, characterized in that: The battery pack connecting busbar also includes a receiving section, and the first connecting end is connected to the first overlapping section through the receiving section. One end of the receiving section is set at an angle to the first connecting end, and the other end of the receiving section is set at an angle to the first overlapping section.

5. The battery pack connecting busbar according to claim 1, characterized in that: The first connecting end is provided with a sleeve hole, and the sleeve hole is used to be sleeved on the pole of the battery pack.

6. The battery pack connecting busbar according to claim 5, characterized in that: The battery pack connecting busbar also includes a fastening nut; the fastening nut is arranged at the sleeve hole and is used to be screwed to the end of the pole of the battery pack.

7. The battery pack connecting busbar according to claim 5, characterized in that: The first connecting end is provided with a marking area, the marking area is arranged close to the periphery of the sleeve hole, and the marking area is used for coating an identification dye.

8. The battery pack connecting busbar according to claim 1, characterized in that: The second connecting end is provided with a welding hole, and the welding hole is used for welding to the control circuit board.

9. The battery pack connecting busbar according to claim 8, characterized in that: The second connection end is provided with a wire-passing square hole, the wire-passing square hole is arranged close to the welding hole, and the wire-passing square hole is used to pass the management signal line of the battery pack.

10. A busbar connection assembly, characterized in that: A battery pack connecting busbar comprising the battery pack according to any one of claims 1 to 9.

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