Terminal assembly and battery pack

Abstract

The utility model provides a terminal assembly and a battery pack, the terminal assembly comprises a terminal seat and a terminal installed on the terminal seat, the terminal seat is provided with a terminal groove for the terminal to be installed in, the terminal comprises a body part, a butt joint part and an installation pin, the butt joint part and the installation pin extend from the body part, the body part is fixedly held on the terminal seat, the butt joint part is configured to be matched with a butt joint terminal, and the installation pin is configured to be matched with the butt joint terminal. The mounting pin is configured to be mounted on a circuit board, the terminal further comprises an additional part extending from the body part, the terminal seat is provided with a holding groove, the additional part is held in the holding groove, and at least part of the additional part is exposed.

Description

Technical Field

[0001] This application relates to the field of battery pack technology. Background Technology

[0002] In existing technologies, when a battery pack supplies power to a high-power machine, the terminals of the battery pack carry a large current, causing the temperature to rise. When the terminal temperature is too high, it not only leads to a decrease in the charging efficiency of the battery pack, but also damages the battery pack, and may even cause the battery pack to catch fire due to high temperature, thus reducing the safety of the battery pack.

[0003] Therefore, it is necessary to provide a new terminal assembly and battery pack. Utility Model Content

[0004] This application provides a terminal assembly and battery pack with a long lifespan and low cost.

[0005] Specifically, this application provides a terminal assembly including a terminal holder and a terminal mounted on the terminal holder. The terminal holder has a terminal slot for mounting the terminal therein. The terminal includes a body portion and a mating portion and a mounting foot extending from the body portion. The body portion is fixed to the terminal holder. The mating portion is configured to mate with a mating terminal. The mounting foot is configured to be mounted on a circuit board. The terminal also includes an additional portion extending from the body portion. The terminal holder has a retaining groove. The additional portion is fixed to the retaining groove and at least a portion of the additional portion is exposed.

[0006] Furthermore, the two retaining grooves are arranged adjacently and located within the terminal groove. The terminal includes a pair of mating portions and a pair of additional portions. The pair of additional portions includes a first additional portion and a second additional portion. The first additional portion is retained in one of the retaining grooves, and the second additional portion is retained in the other retaining groove.

[0007] Furthermore, the extension direction of the docking portion is defined as a first direction, and the extension direction of the mounting foot is defined as a second direction, the first direction being perpendicular to the second direction; the additional portion extends along the first direction; in the second direction, the additional portion is disposed adjacent to the docking portion.

[0008] Furthermore, the terminal block includes a bottom wall with a through hole through which the mounting foot passes. A vent groove is recessed on the side of the bottom wall opposite to the terminal slot, and the vent groove communicates with at least one of the through holes.

[0009] Furthermore, the terminal assembly includes a plurality of terminals, the plurality of terminals including a first terminal, a second terminal, a third terminal and a fourth terminal, the first terminal, the second terminal, the third terminal and the fourth terminal being arranged sequentially along a third direction, the second terminal and the third terminal being located between the first terminal and the fourth terminal.

[0010] Furthermore, the bottom wall is provided with a plurality of through holes, including a first through hole through which the mounting foot of the second terminal passes and a second through hole through which the mounting foot of the third terminal passes. The bottom wall is provided with a plurality of vent grooves, including a first vent groove and a second vent groove. The first vent groove communicates with the first through hole, and the second vent groove communicates with the second through hole.

[0011] Furthermore, both the first terminal and the fourth terminal include exposed portions outside the terminal block, and the body portion includes the exposed portions, which are disposed adjacent to the mounting feet.

[0012] Furthermore, the terminal block includes a bottom wall and a positioning post extending from the bottom wall, the positioning post being located on the side of the bottom wall opposite to the terminal slot, and the positioning post being configured to mate with the circuit board.

[0013] Furthermore, the terminal block also includes a positioning block disposed within the terminal slot, wherein a positioning groove is formed between the positioning block and the slot wall of the terminal slot, and the main body is located within the positioning groove.

[0014] This application also provides a battery pack, including a housing, a cell module, a circuit board, and a terminal assembly as described in any of the above claims, wherein the cell module, the circuit board, and the terminal assembly are all installed inside the housing, and the mounting pins of the terminals are mounted on the circuit board.

[0015] In this application, the terminal also includes an additional portion extending from the main body. The terminal holder has a retaining groove, and the additional portion is retained in the retaining groove. The additional portion increases the heat dissipation area, resulting in better heat dissipation. Furthermore, the design of the additional portion being retained in the retaining groove prevents the terminal from easily becoming detached from the terminal holder. The terminal and terminal holder form a terminal assembly, which can be directly assembled onto the circuit board during wave soldering, making the process more convenient and faster. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the battery pack structure of this application.

[0017] Figure 2 yes Figure 1 An exploded 3D view of the battery pack shown.

[0018] Figure 3 yes Figure 2 Enlarged view of the circled area shown.

[0019] Figure 4 yes Figure 2 The diagram shows the structure of the terminal assembly.

[0020] Figure 5 yes Figure 4 An exploded perspective view of the terminal assembly shown.

[0021] Figure 6 yes Figure 4 A schematic diagram of the terminal assembly from another perspective.

[0022] Figure 7 yes Figure 2 A further exploded 3D view of the battery pack shown.

[0023] Figure 8 yes Figure 7 The diagram shows a partial structural diagram of the battery pack.

[0024] Figure 9 yes Figure 8 Enlarged view of the circled area shown.

[0025] Figure 10 yes Figure 8 The diagram shows the structure of the terminal assembly and the circuit board.

[0026] Figure 11 yes Figure 10 A schematic diagram of the terminal assembly from another perspective.

[0027] Figure 12 yes Figure 11 A schematic diagram of the terminal assembly from another perspective.

[0028] Figure 13 yes Figure 12 The diagram shows the structure of the terminal block. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. "A plurality" or "several" indicates two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper," etc., are for ease of description only and are not limited to a location or spatial orientation. The terms "comprising" or "including," etc., mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. The terms "connected," "linked," etc., are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0031] Please combine Figures 1 to 13 This application provides a battery pack 100, which includes a housing 10, a cell module 20, a circuit board 30, and a terminal assembly 40. The cell module 20, circuit board 30, and terminal assembly 40 are all installed within the housing 10. The terminal assembly 40 is mounted on the circuit board 30. The terminal assembly 40 includes a terminal holder 41 and terminals 42 mounted on the terminal holder 41. The terminal holder 41 has a terminal slot 410 for mounting the terminals 42 therein. The terminal 42 includes a body portion 421 and a mating portion 422 and a mounting foot 423 extending from the body portion 421. The body portion 421 is fixed to the terminal holder 41. The mating portion 422 is configured to mate with a mating terminal (not shown), and the mounting foot 423 is configured to be mounted on the circuit board 30. The extension direction of the mating portion 422 is defined as a first direction X, and the extension direction of the mounting foot 423 is defined as a second direction Y, wherein the first direction X and the second direction Y are perpendicular. The terminal block 41 also includes a positioning block 411 disposed in the terminal groove 410, and a positioning groove 412 is formed between the positioning block 411 and the groove wall of the terminal groove 410, and the main body 421 is located in the positioning groove 412.

[0032] Terminal 42 also includes an additional portion 424 extending from the main body 421. Terminal base 41 has a retaining groove 413, and the additional portion 424 is retained in the retaining groove 413, with at least a portion of the additional portion 424 exposed. The additional portion 424 extends along a first direction X and is flat. In a second direction Y, the additional portion 424 is disposed adjacent to the mating portion 422. In the first direction X, the extension length of the mating portion 422 is approximately the same as the extension length of the additional portion 424. Two retaining grooves 413 are disposed adjacently within the terminal groove 410. Terminal 42 includes a pair of mating portions 422 and a pair of additional portions 424. The pair of additional portions 424 includes a first additional portion 425 and a second additional portion 426. The first additional portion 425 is retained in one of the retaining grooves 413, and the second additional portion 426 is retained in the other retaining groove 413. The additional portion 424 increases the heat dissipation area, resulting in better heat dissipation. In addition, the attachment 424 is fixed in the retaining groove 413. This design makes it difficult for the terminal 42 and the terminal base 41 to become loose. The terminal 42 and the terminal base 41 form a terminal assembly 40. When the circuit board 30 is wave soldered, the terminal assembly 40 can be directly assembled onto the circuit board 30, which is more convenient and faster.

[0033] The terminal block 41 includes a bottom wall 414 with a through hole 415 through which mounting feet 423 pass. A venting groove 416 is recessed on the side of the bottom wall 414 opposite to the terminal slot 410, and the venting groove 416 connects to at least one through hole 415. Specifically, the terminal assembly 40 includes multiple terminals 42, including a first terminal 43, a second terminal 44, a third terminal 45, and a fourth terminal 46. The first terminal 43, the second terminal 44, the third terminal 45, and the fourth terminal 46 are arranged sequentially along a third direction Z. The second terminal 44 and the third terminal 45 are located between the first terminal 43 and the fourth terminal 46, wherein the third direction Z is perpendicular to the first direction X and the second direction Y. Specifically, the bottom wall 414 is provided with multiple through holes 415, including a first through hole 417 through which the mounting pin of the second terminal 44 passes and a second through hole 418 through which the mounting pin of the third terminal 45 passes. The bottom wall 414 is provided with multiple venting grooves 416, including a first venting groove 51 and a second venting groove 52. The first venting groove 51 communicates with the first through hole 417, and the second venting groove 52 communicates with the second through hole 418. The venting grooves 416 make it easier to apply solder when the circuit board 30 undergoes wave soldering.

[0034] Both the first terminal 43 and the fourth terminal 46 include exposed portions 427 that are exposed outside the terminal block 41. The main body 421 includes the exposed portions 427, which are disposed adjacent to the mounting feet 423. The exposed portions 427 facilitate heat dissipation from the terminals 42.

[0035] The terminal block 41 also includes two positioning posts 53 extending from the bottom wall 414. The two positioning posts 53 are located on the side of the bottom wall 414 opposite to the terminal slot 410. The two positioning posts 53 are located on both sides of the first exhaust slot 51 and the second exhaust slot 52. The circuit board 30 is provided with two mating holes 31. The two positioning posts 53 mate with the two mating holes 31.

[0036] In this application, terminal 42 also includes an additional portion 424 extending from the main body 421. Terminal base 41 is provided with a retaining groove 413, and the additional portion 424 is fixed in the retaining groove 413, making it difficult for terminal 42 to loosen from terminal base 41. Terminal 42 and terminal base 41 form a terminal assembly 40. When circuit board 30 undergoes wave soldering, terminal assembly 40 can be directly assembled onto circuit board 30, which is more convenient and faster. The additional portion 424 is provided, and at least part of the additional portion 424 is exposed, which increases the heat dissipation area and can achieve a better heat dissipation effect.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A terminal assembly comprising a terminal holder and a terminal mounted thereon, the terminal holder having a terminal slot therein for mounting the terminal, the terminal comprising a body portion and a mating portion and a mounting foot extending from the body portion, the body portion being held in the terminal holder, the mating portion being configured to mate with a mating terminal, and the mounting foot being configured to be mounted on a circuit board, characterized in that, The terminal also includes an additional portion extending from the main body, the terminal holder having a retaining groove, the additional portion being retained in the retaining groove and at least a portion of the additional portion being exposed.

2. The terminal assembly according to claim 1, characterized in that, The two retaining slots are arranged adjacently and located within the terminal slot. The terminal includes a pair of mating portions and a pair of additional portions. The pair of additional portions includes a first additional portion and a second additional portion. The first additional portion is retained in one of the retaining slots, and the second additional portion is retained in the other retaining slot.

3. The terminal assembly according to claim 1, characterized in that, The extension direction of the docking portion is defined as a first direction, and the extension direction of the mounting foot is defined as a second direction. The first direction is perpendicular to the second direction. The additional portion extends along the first direction. In the second direction, the additional portion is disposed adjacent to the docking portion.

4. The terminal assembly according to claim 1, characterized in that, The terminal block includes a bottom wall with a through hole through which the mounting foot passes. A vent groove is recessed on the side of the bottom wall opposite to the terminal slot, and the vent groove communicates with at least one of the through holes.

5. The terminal assembly according to claim 4, characterized in that, The terminal assembly includes a plurality of terminals, the plurality of terminals including a first terminal, a second terminal, a third terminal and a fourth terminal, the first terminal, the second terminal, the third terminal and the fourth terminal being arranged sequentially along a third direction, the second terminal and the third terminal being located between the first terminal and the fourth terminal.

6. The terminal assembly according to claim 5, characterized in that, The bottom wall is provided with a plurality of through holes, including a first through hole through which the mounting foot of the second terminal passes and a second through hole through which the mounting foot of the third terminal passes. The bottom wall is provided with a plurality of vent grooves, including a first vent groove and a second vent groove. The first vent groove communicates with the first through hole, and the second vent groove communicates with the second through hole.

7. The terminal assembly according to claim 5, characterized in that, Both the first terminal and the fourth terminal include exposed portions outside the terminal block, and the body portion includes the exposed portions, which are disposed adjacent to the mounting feet.

8. The terminal assembly according to claim 1, characterized in that, The terminal block includes a bottom wall and a positioning post extending from the bottom wall, the positioning post being located on the side of the bottom wall opposite to the terminal slot, and the positioning post being configured to mate with the circuit board.

9. The terminal assembly according to claim 1, characterized in that, The terminal block further includes a positioning block disposed in the terminal slot, and a positioning groove is formed between the positioning block and the slot wall of the terminal slot, with the main body located in the positioning groove.

10. A battery pack, comprising a housing, a cell module, a circuit board, and a terminal assembly as described in any one of claims 1 to 9, characterized in that, The battery cell module, the circuit board, and the terminal assembly are all installed inside the housing, and the mounting pins of the terminals are mounted on the circuit board.

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