Battery pack connecting structure and battery pack

Abstract

The utility model relates to a battery pack connecting structure and a battery pack. The battery pack connecting structure comprises a connecting piece, the connecting piece comprises a bottom plate, an electric connecting plate and a positioning plate; the electric connecting plate is provided with a first groove and a first bulge corresponding to the first groove, and each first bulge is provided with a plurality of vertically arranged welding through holes; the positioning plate is provided with second protrusions and second grooves corresponding to the second protrusions, and a plurality of vertically-arranged conductive columns are arranged in each second groove in a penetrating mode. The battery pack is installed in the space formed among the bottom plate, the electric connecting plate and the positioning plate, and copper caps of columnar batteries in the same column in the battery pack are clamped into the first grooves in the electric connecting plate so that welding can be achieved at the welding through holes. The second protrusions on the positioning plates can abut against the zinc shells of the columnar batteries in the same column in the battery pack and make contact with the conductive columns, welding operation can be simplified, when any two connecting pieces are connected in place, series connection of the battery packs can be rapidly achieved, and connection is convenient.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and more specifically, to a battery pack connection structure and a battery pack. Background Technology

[0002] Battery packs are generally composed of multiple battery cells and have wide applications in modern society, such as in electric bicycles, electric vehicles, and portable electronic devices. In existing technologies, before connecting multiple battery packs in series, the individual battery cells need to be assembled into a single unit. The main assembly method is to use electrical connectors to connect each battery cell. These connectors are manually spot-welded to the corresponding battery cells using handheld spot welding equipment. During this process, to ensure a stable connection between the connectors and the battery cells, four spot welds are typically required in a single welding area, such as... Figure 1 As shown, its operation is very cumbersome and inefficient; moreover, when connecting battery packs with this structure in series, an additional pressing component with contacts is required to connect them to other battery packs, which is not convenient to operate and can easily affect the series connection efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a battery pack connection structure and a battery pack, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] On one hand, this utility model provides a battery pack connection structure, including connectors; the connectors include a base plate, an electrical connection plate, and a positioning plate, the electrical connection plate and the positioning plate are disposed opposite each other on both sides of the base plate, and a space for accommodating the battery pack is formed between the base plate, the electrical connection plate and the positioning plate; the side surface of the electrical connection plate facing the positioning plate is provided with a plurality of vertical first grooves, and the side surface of the electrical connection plate facing away from the positioning plate is formed with a first protrusion at the position corresponding to each of the first grooves, and each first protrusion is provided with a plurality of vertically arranged welding through holes; the side surface of the positioning plate facing the electrical connection plate is provided with a plurality of vertical second protrusions, and the plurality of second protrusions correspond one-to-one with the plurality of first grooves; the side surface of the positioning plate facing away from the electrical connection plate is formed with a second groove at the position corresponding to each of the second protrusions, and a plurality of vertically arranged conductive posts are inserted in each second groove; when any two connectors are connected in place, the plurality of first protrusions of one connector are inserted into the plurality of second grooves of the other connector, and the plurality of welding through holes abut against the plurality of conductive posts.

[0006] In some embodiments, a first connecting ear is provided on each of the two opposite sides of the electrical connection plate parallel to the first protrusion, and a second connecting ear is provided on each of the two opposite sides of the positioning plate parallel to the second protrusion; when any two of the connectors are connected in place, the first connecting ear of one connector and the second connecting ear of the other connector are attached to each other and fastened together by fasteners.

[0007] In some embodiments, the fastener includes a bolt and a nut; each of the first connecting ears is provided with a first mounting through hole for bolt insertion, and each of the second connecting ears is provided with a second mounting through hole for bolt insertion; when the first connecting ear and the second connecting ear are engaged, the first mounting through hole and the second mounting through hole are opposite to each other, and one end of the bolt is sequentially inserted into the first mounting through hole and the second mounting through hole and locked with the nut.

[0008] In some embodiments, the side of the electrical connection plate facing away from the positioning plate is further provided with two vertical locking strips, the two locking strips being located on two opposite sides of the electrical connection plate parallel to the first protrusion; the side of the positioning plate facing away from the electrical connection plate is further provided with two vertical locking slots, the two locking slots being located on two opposite sides of the positioning plate parallel to the second protrusion; when any two of the connectors are connected in place, the electrical connection plate of one connector and the positioning plate of the other connector are engaged by the locking strips and locking slots.

[0009] In some embodiments, both the card strip and the card slot are T-shaped.

[0010] In some embodiments, the welding through hole is a circular hole.

[0011] In some embodiments, the base plate is an insulating substrate.

[0012] On the other hand, the present invention also provides a battery pack, including the battery pack connection structure as described in any of the preceding claims.

[0013] The advantages of this utility model are as follows: Unlike the prior art, the battery pack connection structure of this utility model uses the space formed between the base plate, the electrical connection plate, and the positioning plate to install the battery pack. The first groove on the electrical connection plate allows the copper caps of the cylindrical batteries in the same column of the battery pack to be inserted for welding at the welding through-holes. The second protrusion on the positioning plate abuts against the zinc shells of the cylindrical batteries in the same column of the battery pack and contacts the conductive posts, effectively simplifying the welding operation. When any two connectors are connected in place, the multiple first protrusions of one connector are inserted into the multiple second grooves of the other connector, and the weld points at the multiple welding through-holes abut against the multiple conductive posts, thus quickly achieving series connection between battery packs and facilitating the connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the connection of multiple battery cells in the background technology;

[0015] Figure 2 This is a front view schematic diagram of the connector in an embodiment of this utility model;

[0016] Figure 3 This is a top view of the connector in an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the battery pack installed in the connector in an embodiment of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection between the two connectors in an embodiment of this utility model;

[0019] Figure 6 This is a side view of the connector in an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the connector from another side in an embodiment of this utility model;

[0021] Figure 8 This is another top view of the connector in an embodiment of this utility model;

[0022] The labels and numbers in the diagram are as follows: Connector-100; Battery pack-200; Base plate-1; Electrical connection plate-2; Positioning plate-3; First groove-20; First protrusion-21; Welding through hole-210; Second protrusion-30; Second groove-31; Conductive post-310; First connecting ear-22; Second connecting ear-32; Locking strip-23; Locking slot-33. Detailed Implementation

[0023] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Furthermore, the terms indicating orientation, such as "up," "down," "front," "back," "left," "right," "upper end," and "lower end," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1: This embodiment of the present invention provides a battery pack connection structure, such as... Figures 2 to 7 As shown, the battery pack connection structure includes a connector 100. The battery pack 200 is composed of multiple cylindrical cells arranged in a matrix. The copper caps of the cylindrical cells in the battery pack 200 face the same direction so that the battery pack 200 can be installed in the connector 100, thereby facilitating the quick series connection between the battery packs 200 through the connector 100.

[0029] The connector 100 includes a base plate 1, an electrical connection plate 2, and a positioning plate 3. The electrical connection plate 2 and the positioning plate 3 are disposed opposite each other on both sides of the base plate 1, and a space for accommodating the battery pack 200 is formed between the base plate 1, the electrical connection plate 2, and the positioning plate 3. The side surface of the electrical connection plate 2 facing the positioning plate 3 has a plurality of vertical first grooves 20, and the side surface of the electrical connection plate 2 facing away from the positioning plate 3 has a first protrusion 21 formed at the position corresponding to each first groove 20. Each first protrusion 21 has a plurality of vertically arranged welding through holes 210. The side surface of the positioning plate 3 facing away from the electrical connection plate 2 has a plurality of vertically arranged welding through holes 210. The side surface is provided with a plurality of vertical second protrusions 30, and the plurality of second protrusions 30 correspond one-to-one with a plurality of first grooves 20; the side surface of the positioning plate 3 facing away from the electrical connection plate 2 is formed with a second groove 31 at the position corresponding to each second protrusion 30, and a plurality of vertically arranged conductive posts 310 are inserted in each second groove 31; when any two connectors 100 are connected in place, the plurality of first protrusions 21 of one connector 100 are inserted into the plurality of second grooves 31 of the other connector 100, and the plurality of welding through holes 210 abut against the plurality of conductive posts 310.

[0030] When the battery pack 200 is installed inside the connector 100, if Figure 4 As indicated by the middle arrow, the battery pack 200 is pressed down so that it is positioned between the electrical connection plate 2 and the positioning plate 3. During this process, the copper caps of each columnar battery in the same column of the battery pack 200 face the first groove 20 on the corresponding side and are engaged. Then, the zinc shells of each columnar battery in the same column of the battery pack 200 face the second protrusion 30 on the corresponding side and are pressed against it. After installation, the copper caps of each columnar battery will be aligned with the welding through-holes 210 on the corresponding side, and the zinc shells of each columnar battery will contact the conductive posts 310 on the second protrusion 30. The conductive post 310 has two end faces flush with the two sides of the second protrusion 30. The welding through hole 210 is a circular hole with a diameter smaller than that of the copper cap. The copper cap will not pass through the welding through hole 210 and will be pressed against it. The hole in the welding through hole 210 facilitates welding operations, increases the welding area, and ensures a stable connection between the welded copper cap and the electrical connection plate 2, effectively simplifying the welding operation. The number of welding through holes 210 on each first protrusion 21 is consistent with the number of cylindrical cells in the same vertical column of the battery pack 200.

[0031] Specifically, in this embodiment, a first connecting ear 22 is provided on each of the two opposite sides parallel to the first protrusion 21 of the electrical connection plate 2, and a second connecting ear 32 is provided on each of the two opposite sides parallel to the second protrusion 30 of the positioning plate 3. When any two connectors 100 are connected in place, the first connecting ear 22 of one connector 100 is attached to the second connecting ear 32 of the other connector 100 and fastened together by fasteners. The fasteners include bolts and nuts. Each first connecting ear 22 is provided with a first mounting through hole for bolt insertion, and each second connecting ear 32 is provided with a second mounting through hole for bolt insertion. When the first connecting ear 22 and the second connecting ear 32 are attached, the first mounting through hole and the second mounting through hole are opposite each other. One end of the bolt is inserted into the first mounting through hole and the second mounting through hole in sequence and locked with the nut to make the connection between the two connectors 100 more stable.

[0032] When connecting two battery packs 200, the two battery packs 200 should first be installed in the two connectors 100 respectively, and copper caps should be welded to the welding through holes 210. Then, the first protrusion 21 on one connector 100 should be inserted into the second groove 31 of the other connector 100. The solder joint at the welding through hole 210 will then contact the conductive post 310 on the corresponding side, thereby achieving the purpose of quickly connecting the two battery packs 200 in series.

[0033] In this embodiment, the base plate 1 is an insulating substrate.

[0034] Example 2: This embodiment of the present invention provides a battery pack connection structure, which also includes a connector 100; wherein, the structural layout of the connector 100 for mounting the battery pack 200 is basically the same as in Example 1, and will not be described again here. The difference lies in the way the two connectors 100 are connected, such as... Figure 8 As shown in the illustration, in this embodiment, the side of the electrical connection plate 2 facing away from the positioning plate 3 is also provided with two vertical locking strips 23, which are located on opposite sides of the electrical connection plate 2 parallel to the first protrusion 21. The side of the positioning plate 3 facing away from the electrical connection plate 2 is also provided with two vertical locking grooves 33, which are located on opposite sides of the positioning plate 3 parallel to the second protrusion 30. When any two connectors 100 are connected in place, the electrical connection plate 2 of one connector 100 and the positioning plate 3 of the other connector 100 are engaged by the locking strips 23 and the locking grooves 33. The locking strips 23 and the locking grooves 33 are adapted to each other, and both the locking strips 23 and the locking grooves 33 are T-shaped to ensure stable engagement.

[0035] Example 3: This embodiment of the present invention provides a battery pack 200, which includes the battery pack connection structure provided in Example 1 or Example 2 above. For example, the battery pack 200 in this embodiment is installed within the connector 100 provided in Example 1 or Example 2 above.

[0036] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A battery pack connection structure comprising a connection member; characterized by: The connecting piece comprises a bottom plate, an electric connecting plate and a positioning plate, the electric connecting plate and the positioning plate are oppositely arranged on two sides of the bottom plate, and a space for accommodating the battery pack is formed between the bottom plate, the electric connecting plate and the positioning plate; a plurality of vertical first grooves are arranged on the side surface of the electric connecting plate facing the positioning plate, a first protrusion is formed on the side surface of the electric connecting plate away from the positioning plate at a position corresponding to each first groove, and a plurality of vertical welding through holes are arranged on each first protrusion; a plurality of vertical second protrusions are arranged on the side surface of the positioning plate facing the electric connecting plate, and the plurality of second protrusions correspond to the plurality of first grooves one by one; a second groove is formed on the side surface of the positioning plate away from the electric connecting plate at a position corresponding to each second protrusion, and a plurality of vertical conductive columns are arranged in each second groove; when any two connecting pieces are connected in place, the plurality of first protrusions of one of the connecting pieces are inserted into the plurality of second grooves of the other connecting piece one by one, and the plurality of welding through holes correspond to the plurality of conductive columns one by one.

2. The battery pack connection structure according to claim 1, characterized by: The two opposite side edges of the electric connecting plate parallel to the first protrusions are respectively provided with a first connecting lug, and the two opposite side edges of the positioning plate parallel to the second protrusions are respectively provided with a second connecting lug; when any two connecting pieces are connected in place, the first connecting lug of one of the connecting pieces is fitted with the second connecting lug of the other connecting piece and is fastened and connected by a fastener.

3. The battery pack connection structure according to claim 2, characterized by: The fastener comprises a bolt and a nut; each first connecting lug is provided with a first mounting through hole for inserting the bolt, and each second connecting lug is provided with a second mounting through hole for inserting the bolt; when the first connecting lug is fitted with the second connecting lug, the first mounting through hole is opposite to the second mounting through hole, one end of the bolt is inserted into the first mounting through hole and the second mounting through hole in sequence and is locked with the nut.

4. The battery pack connection structure according to claim 1, characterized by: The side surface of the electric connecting plate away from the positioning plate is further provided with two vertical clamping strips, and the two clamping strips are correspondingly located at the two opposite side edges of the electric connecting plate parallel to the first protrusions; the side surface of the positioning plate away from the electric connecting plate is further provided with two vertical clamping grooves, and the two clamping grooves are correspondingly located at the two opposite side edges of the positioning plate parallel to the second protrusions; when any two connecting pieces are connected in place, the electric connecting plate of one of the connecting pieces is clamped with the positioning plate of the other connecting piece through the clamping strip and the clamping groove.

5. The battery pack connection structure according to claim 4, characterized by: The shapes of the clamping strip and the clamping groove are both T-shaped.

6. The battery pack connection structure according to any one of claims 1 to 5, characterized by: The welding through hole is a circular hole.

7. The battery pack connection structure according to any one of claims 1 to 5, characterized by: The bottom plate is an insulating substrate.

8. A battery pack characterized by: A battery pack connecting structure is provided. The battery pack connecting structure comprises the connecting piece according to any one of claims 1-7.

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