Connector and battery pack comprising same

Abstract

The utility model relates to the technical field of battery production, in particular to a connector and a battery pack comprising the same, the connector comprises connector main bodies and an output pole connecting piece, the two connector main bodies are arranged at an interval; the two output pole connecting pieces are arranged at intervals and are connected with the corresponding connector bodies. Each output pole connecting piece is provided with a first copper bar connecting face and a second copper bar connecting face which are arranged oppositely in the first direction. According to the connector, the output pole connecting piece is provided with the first copper bar connecting face and the second copper bar connecting face which are arranged oppositely, double-face lap joint of the output pole connecting piece and the copper bars is achieved, and therefore in the battery pack assembling process, the using number of connectors is reduced, the production cost of a battery pack is reduced, and the assembling technology of the battery pack is simplified; and the assembling efficiency of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a connector and a battery pack comprising the same. Background Art

[0002] The battery pack is the core energy source of new energy electric vehicles. Its safety and working reliability directly affect the safety of new energy electric vehicles. In the battery pack, the high-voltage connector is an important component. The high-voltage connector is the power transmission unit of the battery pack. The battery pack transmits power energy to the whole vehicle through the high-voltage connector. The high-voltage connector is the power transmission bridge between the internal and external high-voltage equipment of the whole vehicle. The tail of the high-voltage connector is generally connected to the high-voltage copper busbar by bolts, thereby realizing the electrical connection between the high-voltage connector and the battery pack.

[0003] Electrodes are arranged on the copper busbar, for example, the positive and negative electrodes of the BDU fast charge, the positive and negative electrodes of the fast charge connector, the positive and negative electrodes of the BDU discharge, the positive and negative electrodes of the front drive motor connector, the positive and negative electrodes of the rear drive motor connector, etc. The type and quantity of electrodes can be adjusted as needed, generally two or more, and the high-voltage connector usually includes a pair of connecting ends, which are electrically connected to a pair of positive and negative electrodes of the copper busbar respectively. When the number of electrodes is greater than two, more than two connectors of different models are required to be connected to the copper busbar respectively, which invisibly increases the production cost of the battery pack and affects the assembly efficiency of the battery pack.

[0004] In view of this, this application is specially filed. Utility Model Content

[0005] The present application provides a connector and a battery pack including the same, so as to solve the problem of how to simplify the assembly process of the battery pack and reduce the production cost of the battery pack.

[0006] In one aspect, the present application provides a connector, comprising:

[0007] A connector body, two of the connector bodies are arranged at intervals;

[0008] Output pole connecting pieces, two of which are arranged at intervals and connected to the corresponding connector body, and the output pole connecting pieces have a first copper bar connecting surface and a second copper bar connecting surface which are arranged opposite to each other along a first direction.

[0009] In some embodiments, the output pole connecting piece includes a first connecting portion and a second connecting portion arranged opposite to each other along the first direction, and one end of the first connecting portion and / or the second connecting portion along a second direction perpendicular to the first direction is connected to the connector body;

[0010] The first connecting portion has a first outer surface which is configured as the first copper busbar connecting surface, and the second connecting portion has a second outer surface which is configured as the second copper busbar connecting surface.

[0011] In some embodiments, the first connecting portion further has a first inner surface disposed opposite to the first copper busbar connecting surface, the second connecting portion has a second inner surface disposed opposite to the second copper busbar connecting surface, and a connecting member is disposed between the first inner surface and the second inner surface so that the first connecting portion and the second connecting portion are connected by the connecting member.

[0012] In some embodiments, the first connecting portion is provided with a first through hole, the second connecting portion is provided with a second through hole, and the connecting member is provided with a connecting hole penetrating through both ends along its axial direction so that a fastening member passes through the first through hole, the connecting hole, and the second through hole.

[0013] In some embodiments, both ends of the connecting member along its axial direction respectively pass through the first through hole and the second through hole and are sleeved with the first connecting portion and the second connecting portion. Among them, the center lines of the connecting hole, the first through hole, and the second through hole are parallel to the first direction.

[0014] In some embodiments, the output pole connecting piece further includes a transition portion, and the first connecting portion, the transition portion, and the second connecting portion are sequentially connected so that the output pole connecting piece forms a U-shaped groove with an opening facing the connector body, and the connecting member is disposed in the U-shaped groove.

[0015] In some embodiments, the U-shaped groove has a first wall and a second wall oppositely disposed along the first direction. Both ends of the connecting member along its axial direction are respectively connected to the first wall and the second wall or pass through the first through hole and the second through hole and are sleeved with the first connecting portion and the second connecting portion. Among them, the center lines of the connecting hole, the first through hole, and the second through hole are parallel to the first direction.

[0016] In some embodiments, two of the connector bodies are oppositely disposed along the first direction, and two of the output pole connecting pieces are staggeredly disposed along a third direction perpendicular to the first direction and are connected to the corresponding connector bodies.

[0017] In some embodiments, along the first direction, the orthographic projections of the two output pole connecting pieces at least partially overlap, and along a second direction perpendicular to the first direction, the overlapping area of the orthographic projections on the side close to the connector body is larger than the overlapping area of the orthographic projections on the side far from the connector body.

[0018] On the other hand, the present application also provides a battery pack, including the connector as described above.

[0019] After adopting the above technical solutions, the present application has the following beneficial effects compared with the prior art.

[0020] 1. For the connector in the present application, the output pole connecting piece has a first copper row connecting surface and a second copper row connecting surface arranged back to back, realizing double-sided lapping of the output pole connecting piece and the copper row. Thus, during the assembly process of the battery pack, the number of connectors used is reduced, the production cost of the battery pack is lowered, the assembly process of the battery pack is simplified, and the assembly efficiency of the battery pack is improved.

[0021] 2. For the battery pack in the present application, since it includes the connector in the present application, it simultaneously includes all the above advantages of the connector. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a connector in an embodiment of the present application;

[0023] Figure 2 is a side view of a connector in an embodiment of the present application;

[0024] Figure 3 is a side view of another connector in an embodiment of the present application.

[0025] In the figure: 100, connector; 110, base; 120, connector body; 130, output pole connecting piece; 131, first connecting portion; 1311, first copper row connecting surface; 1312, first inner surface; 1313, first through hole; 132, second connecting portion; 1321, second copper row connecting surface; 1322, second inner surface; 133, U-shaped groove; 1331, first wall; 1332, second wall; 134, transition portion; 140, connecting member; 141, connecting hole; 150, inserting portion. Detailed Embodiments

[0026] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0027] An embodiment of the present application provides a connector 100, which is applied to a battery pack. For the specific structure of the connector 100, please refer to Figures 1 to 3, which includes a connector body 120 and an output pole connecting piece 130. Among them, the two connector bodies 120 are arranged at intervals; the two output pole connecting pieces 130 are arranged at intervals and are connected to the corresponding connector bodies 120. The output pole connecting piece 130 has a first copper row connecting surface 1311 and a second copper row connecting surface 1321 arranged back to back along the first direction D1. The first copper row connecting surface 1311 and the second copper row connecting surface 1321 are respectively lapped with the copper row, so that the output pole connecting piece 130 is electrically connected to the copper row on both sides.

[0028] For the connector 100 according to the present application, the output pole connecting piece 130 has a first copper row connecting surface 1311 and a second copper row connecting surface 1321 arranged back to back, realizing double-sided lapping of the output pole connecting piece 130 with the copper row. Thus, during the battery pack assembly process, the number of connectors 100 used is reduced, the production cost of the battery pack is lowered, the assembly process of the battery pack is simplified, and the assembly efficiency of the battery pack is improved.

[0029] The first direction D1 is substantially perpendicular to the height direction of the connector 100. The first direction D1 can be substantially parallel to the length direction of the connector 100. Of course, the first direction D1 can also be substantially parallel to the width direction of the connector 100. For the sake of description, in this embodiment, the first direction D1 is substantially parallel to the length direction of the connector 100. The output pole connecting piece 130 has a first copper row connecting surface 1311 and a second copper row connecting surface 1321 arranged back to back along the length direction of the connector 100, ensuring sufficient electrical clearance and creepage distance, thereby improving the use safety of the battery pack.

[0030] As Figures 1 to 3 shown, the output pole connecting piece 130 includes a first connecting portion 131 and a second connecting portion 132 arranged opposite to each other along the first direction D1. Both the first connecting portion 131 and the second connecting portion 132 are arranged opposite to the corresponding connector body 120 along the second direction D2. One end of the first connecting portion 131 and / or the second connecting portion 132 along the second direction D2 perpendicular to the first direction D1 is connected to the connector body 120, so that the output pole connecting piece 130 is connected to the connector body 120.

[0031] The first direction D1 is substantially perpendicular to the height direction of the connector 100. The first direction D1 is substantially parallel to the length direction of the connector 100. The second direction D2 is perpendicular to the first direction D1, that is, the second direction D2 is substantially parallel to the height direction of the connector 100. Both the first connecting portion 131 and the second connecting portion 132 are arranged opposite to the corresponding connector body 120 along the height direction of the connector 100 and are connected to the bottom of the connector body 120.

[0032] As Figures 1 to 3As shown, the first connecting portion 131 is plate-shaped. The first connecting portion 131 has a first outer surface which is a plane and is configured as the first copper bar connecting surface 1311, such that the copper bar is in close contact with the first outer surface, increasing the contact area between the first outer surface and the copper bar. The second connecting portion 132 is plate-shaped. The second connecting portion 132 has a second outer surface which is a plane and is configured as the second copper bar connecting surface 1321, such that the copper bar is in close contact with the second outer surface, increasing the contact area between the second outer surface and the copper bar.

[0033] As Figure 2 and Figure 3 shown, the first connecting portion 131 further has a first inner surface 1312 disposed opposite to the first copper bar connecting surface 1311 along the first direction D1. The second connecting portion 132 has a second inner surface 1322 disposed opposite to the second copper bar connecting surface 1321 along the first direction D1. A connecting member 140 is disposed between the first inner surface 1312 and the second inner surface 1322, so that the first connecting portion 131 and the second connecting portion 132 are connected by the connecting member 140.

[0034] As Figure 1 shown, the first connecting portion 131 is provided with a first through hole 1313. The second connecting portion 132 is provided with a second through hole. The connecting member 140 is provided with a connecting hole 141 that penetrates through both ends along its axial direction, that is, the connecting member 140 is provided with a connecting hole 141 that penetrates through both ends along the first direction, so that a fastener passes through the first through hole 1313, the connecting hole 141, and the second through hole, thereby fixing the first connecting portion 131, the second connecting portion 132, and the copper bar together.

[0035] To better assemble the fastener, exemplarily, the fastener can be a fixing bolt, the connecting member 140 can be a fixing nut, and the connecting hole 141 of the connecting member 140 can be an internal thread hole, and the internal thread hole cooperates with the fixing bolt, thereby ensuring the firmness of the connection between the copper bar and the output pole connecting piece 130.

[0036] As Figure 1 and Figure 2 shown, as an alternative embodiment, both ends of the connecting member 140 along its axial direction respectively pass through the first through hole 1313 and the second through hole and are sleeved with the first connecting portion 131 and the second connecting portion, such that the connecting member 140 is firmly connected to the first connecting portion 131 and the second connecting portion. Among them, the centerlines of the connecting hole 141, the first through hole 1313, and the second through hole are parallel to the first direction D1, that is, the centerlines of the connecting hole 141, the first through hole 1313, and the second through hole are parallel to the length direction of the connector 100. The fastener sequentially passes through the first through hole 1313, the connecting hole 141, and the second through hole along the length direction of the connector 100.

[0037] To enhance the firmness of the connection between the connecting member 140 and the first connecting portion 131 and the second connection, the connecting member 140 is fixedly connected to the first connecting portion 131 and the second connection by welding respectively, with high assembly efficiency, good welding effect and high connection strength.

[0038] As Figure 3 shown, as an alternative embodiment, the output pole connecting piece 130 further includes a transition portion 134. The first connecting portion 131, the transition portion 134 and the second connecting portion 132 are connected in sequence, so that the output pole connecting piece 130 forms a U-shaped groove 133 with an opening facing the connector body 120. The connecting member 140 is arranged in the U-shaped groove 133, so that the connecting member 140 is limited in the U-shaped groove 133, preventing the connecting member 140 from detaching from the first connecting portion 131 or the second connecting portion 132 and causing the copper bar to detach from the output pole connecting piece 130, thereby ensuring the stability of the connection structure between the copper bar and the output pole connecting piece 130.

[0039] As Figure 3 shown, the U-shaped groove 133 has a first wall 1331 and a second wall 1332 oppositely arranged along the first direction D1. The two ends of the connecting member 140 along its axial direction are respectively connected to the first wall 1331 and the second wall 1332, that is, the two ends of the connecting member 140 along the length direction of the connector 100 are respectively abutted against the first wall 1331 and the second wall 1332 or fixedly connected by welding, avoiding the connecting member 140 relative to the first connecting portion 131 or the second connecting portion 132 and causing the copper bar to detach from the output pole connecting piece 130. Of course, the two ends of the connecting member 140 along the length direction of the connector 100 can pass through the first through hole 1313 penetrating the first wall 1331 and the second through hole penetrating the second wall 1332 to be sleeved with the first connecting portion 131 and the second connecting portion 132, and then fixedly connected to the first connecting portion 131 and the second connection by welding, so that the fastener sequentially passes through the first through hole 1313, the connection hole 141 and the second through hole along the length direction of the connector 100, making the copper bar and the output pole connecting piece 130 tightly connected.

[0040] As Figures 1 to 3 shown, the connector 100 further includes a base 110 for the connector body 120 to pass through and a plugging portion 150 arranged in the connector body 120. Among them, the plugging portion 150 can be inserted by a plug of a load to achieve electrical connection with the load; to facilitate the installation of the connector body 120, the base 110 is provided with a through hole for the connector body 120 to pass through, so that the outer wall surface of the connector body 120 is sleeved with the base 110.

[0041] As Figures 1 to 3As shown, two connector bodies 120 are disposed opposite to each other along the first direction D1. Two output pole connecting pieces 130 are disposed staggeredly along the third direction D3 perpendicular to the first direction D1 and are connected to the corresponding connector bodies 120, so as to avoid interference between the two output pole connecting pieces 130, thereby ensuring the electrical clearance, creepage distance, and the electrical connection stability between the copper bar and the electrical components in the battery pack.

[0042] The first direction D1 is substantially perpendicular to the height direction of the connector 100, the first direction D1 is substantially parallel to the length direction of the connector 100, the third direction D3 is perpendicular to the first direction D1, that is, the third direction D3 is substantially parallel to the width direction of the connector 100. The two output pole connecting pieces 130 are disposed staggeredly along the width direction of the connector 100 and are connected to the corresponding connector bodies 120.

[0043] As Figure 1 shown, along the first direction D1, that is, along the length direction of the connector 100, the orthographic projections of the two output pole connecting pieces 130 at least partially overlap, and along the second direction D2 perpendicular to the first direction D1, that is, along the height direction of the connector 100, the overlapping area of the orthographic projections on the side close to the connector body 120 is larger than the overlapping area of the orthographic projections on the side far from the connector body 120, so that a safety gap is formed at one end of the two output pole connecting pieces 130 far from the connector body 120, ensuring that the copper bar is connected to the first connecting portion 131 and the second connecting portion 132 and does not interfere with each other, and improving the electrical connection stability of the electrical components in the battery pack.

[0044] In the embodiment of the present application, a battery pack is further provided, which includes the connector in the above embodiment, and thus includes all the advantages of the connector, which will not be elaborated here.

[0045] The battery pack in the present application is applied to an energy storage device, and the energy storage device may be a device with a battery swapping function such as a vehicle or a working machine.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0047] In addition, the terms "upper" and "lower" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "upper" and "lower" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0048] In this application, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In this application, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0050] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A connector, characterized in that, Comprising: A connector body, with two said connector bodies arranged at intervals; Output pole connecting pieces, with two said output pole connecting pieces arranged at intervals and connected to the corresponding said connector bodies, and the output pole connecting pieces having a first copper row connecting surface and a second copper row connecting surface arranged back to back in a first direction.

2. The connector according to claim 1, wherein The output pole connecting piece includes a first connecting portion and a second connecting portion arranged opposite to each other in the first direction, and one end of the first connecting portion and / or the second connecting portion in a second direction perpendicular to the first direction is connected to the connector body; The first connecting portion has a first outer surface, and the first outer surface is configured as the first copper row connecting surface, the second connecting portion has a second outer surface, and the second outer surface is configured as the second copper row connecting surface.

3. The connector according to claim 2, characterized in that, The first connecting portion further has a first inner surface arranged back to back with the first copper row connecting surface, the second connecting portion has a second inner surface arranged back to back with the second copper row connecting surface, and a connecting piece is arranged between the first inner surface and the second inner surface so that the first connecting portion and the second connecting portion are connected by the connecting piece.

4. The connector according to claim 3, characterized in that The first connecting portion is provided with a first through hole, the second connecting portion is provided with a second through hole, and the connecting piece is provided with a connecting hole penetrating through both ends along its axial direction so that a fastener passes through the first through hole, the connecting hole, and the second through hole.

5. The connector according to claim 4, characterized in that, Both ends of the connecting piece along its axial direction respectively pass through the first through hole and the second through hole and are sleeved with the first connecting portion and the second connecting portion, wherein the center lines of the connecting hole, the first through hole, and the second through hole are parallel to the first direction.

6. The connector according to claim 4, characterized in that, The output pole connecting piece further includes a transition portion, and the first connecting portion, the transition portion, and the second connecting portion are sequentially connected so that the output pole connecting piece forms a U-shaped groove with an opening facing the connector body, and the connecting piece is arranged in the U-shaped groove.

7. The connector according to claim 6, characterized in that, The U-shaped groove has a first wall and a second wall arranged opposite to each other in the first direction, and both ends of the connecting piece along its axial direction are respectively connected to the first wall and the second wall or pass through the first through hole and the second through hole and are sleeved with the first connecting portion and the second connecting portion, wherein the center lines of the connecting hole, the first through hole, and the second through hole are parallel to the first direction.

8. The connector according to any one of claims 1 to 7, characterized in that, The two said connector bodies are arranged opposite to each other in the first direction, and the two output pole connecting pieces are arranged staggered in a third direction perpendicular to the first direction and are connected to the corresponding said connector bodies.

9. The connector according to claim 8, characterized in that, Along the first direction, the orthographic projections of the two output pole connecting pieces at least partially overlap, and along the second direction perpendicular to the first direction, the overlapping area of the orthographic projection on the side closer to the connector body is larger than the overlapping area of the orthographic projection on the side farther from the connector body.

10. A battery pack, characterized in that, Including the connector according to any one of claims 1 to 9.

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