Battery pack

Abstract

The utility model discloses a battery pack which comprises a shell, a battery cell assembly arranged in the shell and a circuit board which is arranged on the battery cell assembly and is electrically connected with the battery cell assembly, the charging device is characterized by further comprising wiring terminals connected to the circuit board, the wiring terminals comprise a positive terminal, a negative terminal, a charging port C + terminal and a temperature control port TC terminal which are connected to the circuit board, and the positive terminal and the negative terminal are arranged on the two sides of the charging port C + terminal and the two sides of the temperature control port TC terminal. The positive terminal and the negative terminal are respectively provided with two clamping points, and the charging port C + terminal and the temperature control port TC terminal are respectively provided with a clamping point. Due to the fact that large current can be generated in use, two clamping points are arranged on the positive terminal and the negative terminal to meet the use requirement, the current of the charging port C and the current of the temperature control port TC are small, the use requirement can be met only through one clamping point, material loss is reduced under the condition that the use requirement is met, and cost is saved.

Description

Technical Field

[0001] The utility model relates to a battery pack, in particular to a battery pack. Background Art

[0002] Cordless power tools and other cordless devices use rechargeable battery packs as a power source, which are often removably connected to other tools or devices.

[0003] The wiring terminals of the existing battery pack basically include a positive terminal, a negative terminal, a charging port C+ terminal, and a temperature control port TC terminal. The length and the card point of each wiring terminal are basically the same. Since the positive terminal and the negative terminal have a large current during use, the required length is longer. Therefore, due to the long length of the wiring terminal, it is necessary to set multiple card points so that the pins on the power tool can contact multiple card points. The current of the charging port C+ terminal and the temperature control port TC terminal is relatively small during use, so there is no need to set a longer wiring terminal. Therefore, there is no need to set multiple card points on the shorter wiring terminal to connect with the pins on the power tool. Setting multiple card points and a long length of the wiring terminal will result in more costs and processes required for the production of the wiring terminal, and the cost is higher.

[0004] Secondly, in the prior art, the circuit board in the battery pack is basically fixed by screws when it is installed on the battery cell assembly. Therefore, during installation, the operator needs to match the threaded holes on the circuit board with the threaded holes on the battery cell assembly before accurately installing the screws. However, due to the small structure of the circuit board itself and the small threaded holes, it is difficult to align quickly during alignment. To this end, a battery pack is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a battery pack in order to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a battery pack, comprising a shell, a battery cell assembly placed in the shell, and a circuit board installed on the battery cell assembly and electrically connected to the battery cell assembly; it is characterized in that it also includes a wiring terminal connected to the circuit board, the wiring terminal includes a positive terminal, a negative terminal, a charging port C+ terminal and a temperature control port TC terminal connected to the circuit board, the positive terminal and the negative terminal are arranged on both sides of the charging port C+ terminal and the temperature control port TC terminal, and two card points are provided on the positive terminal and the negative terminal, and one card point is provided on the charging port C+ terminal and the temperature control port TC terminal.

[0007] Further preferably, it also includes a limiting structure arranged on the battery cell assembly and the circuit board to limit the installation position of the circuit board, and the limiting structure includes a positioning block arranged on the battery cell assembly and a positioning groove arranged on the circuit board corresponding to the position of the positioning block.

[0008] Further preferably, a positioning boss is also provided on the housing.

[0009] Further preferably, the shell is divided into an upper shell and a lower shell, and the upper shell is provided with a long slot corresponding to the positions of the positive terminal and the negative terminal and a short slot corresponding to the charging port C+ terminal and the temperature control port TC terminal.

[0010] Further preferably, the upper shell is also provided with a guide groove for guiding and limiting the installation of the battery pack.

[0011] The beneficial effects of the utility model are as follows: since a large current will be generated during use, two clamping points are provided on the positive terminal and the negative terminal to meet the use requirements, and the current of the charging port C and the temperature control port TC is small, so only one clamping point is needed to meet the use requirements, thereby saving material loss and cost while meeting the use requirements;

[0012] By arranging a limiting structure on the battery cell assembly and the circuit board, the limiting structure limits the position of the circuit board installed on the battery cell assembly, and after positioning, the threaded hole on the circuit board is aligned with the threaded hole on the battery cell assembly, which facilitates the installation of fixing screws;

[0013] The positioning boss and the guide groove are provided to guide and position the battery pack when it is installed on the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0015] Attached Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Attached Figure 3 It is another structural schematic diagram of the utility model from another viewing angle.

[0017] Legend: 1. Shell; 2. Battery cell assembly; 3. Circuit board; 4. Positive terminal; 5. Negative terminal; 6. Charging port C+ terminal; 7. Temperature control port TC terminal; 8. Clamping point; 9. Positioning plug; 10. Positioning groove; 11. Positioning boss; 12. Upper shell; 13. Lower shell; 14. Long slot; 15. Short slot; 16. Guide groove. DETAILED DESCRIPTION

[0018] Below we further explain the battery pack described in the present invention with reference to the accompanying drawings.

[0019] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the utility model are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense; for example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-3 As shown in, a battery pack comprises a shell 1, a battery cell assembly 2 placed in the shell 1, and a circuit board 3 installed on the battery cell assembly 2 and electrically connected to the battery cell assembly 2; it is characterized in that it also includes a wiring terminal connected to the circuit board 3, the wiring terminal comprises a positive terminal 4, a negative terminal 5, a charging port C+ terminal 6 and a temperature control port TC terminal 7 connected to the circuit board 3, the positive terminal 4 and the negative terminal 5 are arranged on both sides of the charging port C+ terminal 6 and the temperature control port TC terminal 7, and two card points 8 are arranged on the positive terminal 4 and the negative terminal 5, and one card point 8 is arranged on the charging port C+ terminal 6 and the temperature control port TC terminal 7;

[0022] Since a large current will be generated during use, two card points 8 are set on the positive terminal 4 and the negative terminal 5 to meet the use requirements. The current of the charging port C and the temperature control port TC is small, so only one card point 8 is needed to meet the use requirements, saving material loss and cost while meeting the use requirements.

[0023] In one embodiment, it also includes a limiting structure arranged on the battery cell assembly 2 and the circuit board 3 to limit the installation position of the circuit board 3, and the limiting structure includes a positioning plug 9 arranged on the battery cell assembly 2 and a positioning groove 10 arranged on the circuit board 3 corresponding to the position of the positioning plug 9;

[0024] By setting a limiting structure on the battery cell assembly 2 and the circuit board 3, the limiting structure limits the position of the circuit board 3 installed on the battery cell assembly 2. After positioning, the threaded holes on the circuit board 3 are aligned with the threaded holes on the battery cell assembly 2, which facilitates the installation of the fixing screws.

[0025] In one embodiment, a positioning boss 11 is further provided on the housing 1; the positioning boss 11 serves to position the battery pack when it is installed on the tool.

[0026] In one embodiment, the shell 1 is divided into an upper shell 12 and a lower shell 13, and the upper shell 12 is provided with a long slot 14 corresponding to the position of the positive terminal 4 and the negative terminal 5, and a short slot 15 corresponding to the charging port C+ terminal 6 and the temperature control port TC terminal 7; through the setting of the long slot 14 and the short slot 15, in order to adapt to the length of the positive terminal 4, the negative terminal 5, the charging port C+ terminal 6 and the temperature control port TC terminal 7, at the same time, it plays a role in limiting the position and distance of the pin insertion on the equipment when the battery pack is installed on the equipment.

[0027] In one embodiment, the upper shell 12 is further provided with a guide groove 16 for guiding and limiting the installation of the battery pack; the guide groove 16 serves to guide the battery pack when it is installed on the equipment, and also to limit its position after installation.

[0028] The protection scope of the present utility model is not limited to the above embodiments and their variations. Conventional modifications and replacements made by those skilled in the art based on the contents of this embodiment all fall within the protection scope of the present utility model.

Claims

1. A battery pack, comprising a housing (1), a battery cell assembly (2) placed in the housing (1), and a circuit board (3) mounted on the battery cell assembly (2) and electrically connected to the battery cell assembly (2); wherein: It also includes a wiring terminal connected to the circuit board (3), the wiring terminal including a positive terminal (4), a negative terminal (5), a charging port C+ terminal (6) and a temperature control port TC terminal (7) connected to the circuit board (3), the positive terminal (4) and the negative terminal (5) are arranged on both sides of the charging port C+ terminal (6) and the temperature control port TC terminal (7), and two clamping points (8) are arranged on the positive terminal (4) and the negative terminal (5), and one clamping point (8) is arranged on the charging port C+ terminal (6) and the temperature control port TC terminal (7).

2. A battery pack according to claim 1, characterized in that: It also includes a limiting structure arranged on the battery cell assembly (2) and the circuit board (3) to limit the installation position of the circuit board (3), the limiting structure comprising a positioning plug (9) arranged on the battery cell assembly (2) and a positioning groove (10) arranged on the circuit board (3) corresponding to the position of the positioning plug (9).

3. A battery pack according to claim 1, characterized in that: The housing (1) is also provided with a positioning boss (11).

4. A battery pack according to claim 1, characterized in that: The shell (1) is divided into an upper shell (12) and a lower shell (13), and the upper shell (12) is provided with a long slot (14) corresponding to the position of the positive terminal (4) and the negative terminal (5), and a short slot (15) corresponding to the charging port C+ terminal (6) and the temperature control port TC terminal (7).

5. A battery pack according to claim 4, characterized in that: The upper shell (12) is also provided with a guide groove (16) which plays a guiding and limiting role in the installation of the battery pack.

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