CN220914330U

CN220914330U - Rechargeable battery

Info

Publication number: CN220914330U
Application number: CN202322519012.2U
Authority: CN
Inventors: 余红东; 郑小斌
Original assignee: Dongguan Zeuhong New Energy Technology Co ltd
Current assignee: Dongguan Zeuhong New Energy Technology Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-05-07
Anticipated expiration: 2033-09-15

Abstract

The utility model relates to the technical field of batteries, in particular to a rechargeable battery which comprises a shell, a battery core, a circuit board, a plastic cap, an anode cap, an avoidance groove, an opening groove, a clamping groove, a charging circuit module and a first conducting piece, wherein the battery core is arranged in the shell, the circuit board and the plastic cap, the anode cap is positioned above the plastic cap and can be inserted into the plastic cap, the avoidance groove is formed in the plastic cap, the opening groove is formed in the shell and can be communicated with the avoidance groove, the clamping groove is formed in the plastic cap and can be communicated with the avoidance groove, the charging circuit module is arranged on the circuit board, and the first conducting piece is arranged on the circuit board and can be electrically connected with the circuit board. The inner wall of dodging the groove and the charging circuit module constitute Type-C interface, and the charging circuit module is equivalent to the charging circuit assembly of Type-C interface, and the inner wall of dodging the groove is equivalent to the plug-in housing of Type-C interface, has simplified the structure of the utility model. The battery core and the circuit board are welded into a whole, so that the assembly steps of the battery core and the circuit board required by assembly are reduced. The first conducting piece is directly abutted with the positive electrode cap, and the effect of conducting the positive electrode cap and the circuit board by the first conducting piece is good.

Description

Rechargeable battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a rechargeable battery.

Background

There are two main types of rechargeable cylindrical lithium batteries, one is an integrated rechargeable battery with a USB charging interface, and the other is a rechargeable battery with a battery and a charger separated.

In patent application number CN202121653041.2, a high capacity AAA rechargeable battery assembled in-line is disclosed that includes a housing, a battery core, a circuit protection plate, a plastic cap, and an anode cap that are coaxially connected in sequence. The battery cell is provided with needle-shaped lugs which are led out from the battery cell body, the circuit protection board is provided with needle sleeves for the needle-shaped lugs to be matched, and the needle-shaped lugs are inserted into the corresponding needle sleeves. The peripheral wall of the plastic cap is provided with two first cuts which are oppositely arranged and axially arranged along the plastic cap, and the joint of the peripheral wall of the plastic cap and the top of the plastic cap is provided with a reinforcing rib. The top is equipped with the slot towards the one side of circuit protection board, and the upper end of circuit protection board is pegged graft in the slot, and the both sides are outwards exposed from two first incisions on the circuit protection board.

The structure in the patent application is complex, the production cost is high, and the assembly steps are numerous; the positive electrode of the battery cell is guided onto the positive electrode cap through point contact between the elastic sheet part and the plug-in part between the positive electrode cap and the circuit protection board, and the contact between the elastic sheet part and the plug-in part is unstable, so that the problems of poor contact, broken contact and the like are easy to occur. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of utility model

In order to solve the above technical problems, an object of the present utility model is to provide a rechargeable battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

A rechargeable battery comprises a shell, a battery core, a circuit board, a plastic cap, an anode cap, an avoidance groove, an opening groove, a clamping groove, a charging circuit module and a first conducting piece, wherein the battery core, the circuit board and the plastic cap are sequentially arranged in the shell from bottom to top; the circuit board can be matched with the clamping groove in a concave-convex manner, the charging circuit module protrudes into the avoidance groove, and the first conducting piece can be electrically connected with the positive electrode cap after penetrating through the plastic cap; the circuit board is electrically connected with the battery core.

Further, the rechargeable battery also comprises a positive electrode tab and a negative electrode tab which are respectively arranged on the battery core, and a positive electrode needle sleeve and a negative electrode needle sleeve which are respectively arranged on the circuit board, wherein the positive electrode tab and the positive electrode needle sleeve are welded; and the negative electrode tab is welded with the negative electrode needle sleeve.

Further, the rechargeable battery further comprises a limiting part arranged on the plastic cap and a limiting groove arranged on the shell, and the limiting part can be matched with the limiting groove in a concave-convex mode.

Further, the rechargeable battery further comprises a through hole penetrating through the top end of the plastic cap, and the first conducting piece penetrates through the through hole and is electrically connected with the positive electrode cap.

Further, the rechargeable battery further comprises a guide groove arranged on the plastic cap, the guide groove and the clamping groove are arranged oppositely, and the circuit board can be inserted into the guide groove.

Further, the plastic cap comprises a cap body, a first connecting part, a second connecting part, a first hollow groove and a second hollow groove, wherein the cap body is spliced with the positive electrode cap, the first connecting part and the second connecting part are respectively arranged on the cap body, the first hollow groove is arranged on the first connecting part, the second hollow groove is arranged on the second connecting part, and the avoidance groove and the clamping groove are respectively formed by surrounding the outer walls of the first connecting part and the second connecting part; the first conducting piece penetrates through the cap body and is electrically connected with the positive electrode cap.

Further, the length direction of the avoidance groove is perpendicular to the horizontal direction.

The utility model has the beneficial effects that: the inner wall of the avoidance groove and the charging circuit module form the Type-C interface, the charging circuit module is equivalent to the charging circuit component of the Type-C interface, the inner wall of the avoidance groove is equivalent to the plug-in shell of the Type-C interface, the structure of the utility model is simplified, and the production cost is saved. The battery core and the circuit board are welded into a whole, so that the assembly steps of the battery core and the circuit board required by assembly are reduced. The first conducting piece is directly abutted with the positive electrode cap, and when the first conducting piece and the positive electrode cap shake or shake, the first conducting piece and the positive electrode cap can always keep a conducting state, and the effect of the first conducting piece on the positive electrode cap and the circuit board is good.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic diagram of an explosive structure according to the present utility model.

Fig. 3 is a schematic view of a partial explosion structure according to the present utility model.

Fig. 4 is a schematic diagram of a partial explosion structure according to the present utility model.

Reference numerals illustrate:

1. A housing; 2. a battery cell; 3. a circuit board; 4. a plastic cap; 5. an anode cap; 6. an avoidance groove; 7. a clamping groove; 8. an open slot; 9. a charging circuit module; 10. a first conductive member; 11. a positive electrode tab; 12. a negative electrode tab; 13. a positive electrode needle sheath; 14. a negative electrode needle sleeve; 15. a limit part; 16. a limit groove; 17. a through hole; 19. a guide groove; 41. a cap body; 42. a first connection portion; 43. a second connecting portion; 44. a first hollow groove; 45. the second hollow groove.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the rechargeable battery provided by the utility model comprises a housing 1, a battery core 2, a circuit board 3, a plastic cap 4, an anode cap 5, an avoidance groove 6, an opening groove 8, a clamping groove 7, a charging circuit module 9 and a first conducting piece 10, wherein the battery core 2, the circuit board 3 and the plastic cap 4 are sequentially arranged in the housing 1 from bottom to top, the anode cap 5 is positioned above the plastic cap 4 and can be spliced with the plastic cap 4, the avoidance groove 6 is arranged on the plastic cap 4, the opening groove 8 is arranged on the housing 1 and can be communicated with the avoidance groove 6, the clamping groove 7 is arranged on the plastic cap 4 and can be communicated with the avoidance groove 6, and the charging circuit module 9 is arranged on the circuit board 3 and can be electrically connected with the circuit board 3; when the circuit board 3 is connected with the plastic cap 4, the circuit board 3 can be clamped in the clamping groove 7, the charging circuit module 9 can protrude into the avoidance groove 6, and the top end of the first conducting piece 10 can penetrate through the plastic cap 4 and be electrically connected with the anode cap 5; the circuit board 3 is electrically connected with the battery core 2.

Specifically, the battery cell 2 may be an existing lithium battery. The rechargeable battery also comprises a positive electrode tab 11 and a negative electrode tab 12 which are respectively arranged on the battery core 2, and a positive electrode needle sleeve 13 and a negative electrode needle sleeve 14 which are respectively arranged on the circuit board 3, wherein the positive electrode tab 11 is welded with the positive electrode needle sleeve 13; the negative electrode tab 12 is welded with the negative electrode needle sleeve 14; the positive electrode tab 11 and the negative electrode tab 12 are respectively and electrically connected with the positive electrode and the negative electrode of the battery cell 2; the positive electrode tab 11 and the negative electrode tab 12 are electrically connected with the circuit board 3 through a positive electrode needle sleeve 13 and a negative electrode needle sleeve 14 respectively. The battery cell 2 and the circuit board 3 are welded into a whole. In the actual installation process, firstly, the positive electrode cap 5 is clamped with the plastic cap 4, then the circuit board 3 is inserted into the clamping groove 7, the charging circuit module 9 is contained in the avoidance groove 6, meanwhile, the first conducting piece 10 passes through the plastic cap 4 and then is abutted against the positive electrode cap 5, finally, the shell 1 is sleeved outside the battery core 2, the circuit board 3 and the plastic cap 4, the avoidance groove 6 is communicated with the open groove 8, and the inner wall of the shell 1 can be abutted against the outer wall of the plastic cap 4, so that the assembly of the rechargeable battery is completed. According to the utility model, the inner wall of the avoidance groove 6 and the charging circuit module 9 form a Type-C interface, the charging circuit module 9 is equivalent to a charging circuit assembly of the Type-C interface, and the inner wall of the avoidance groove 6 is equivalent to a plug-in shell of the Type-C interface, so that the structure of the utility model is simplified, and the production cost is saved. The battery cell 2 and the circuit board 3 are welded into a whole, so that the assembly steps of the battery cell 2 and the circuit board 3 required by assembly are reduced. The first conducting piece 10 is directly abutted against the positive electrode cap 5, when the first conducting piece 10 and the positive electrode cap 5 shake or shake, the first conducting piece 10 and the positive electrode cap 5 can always keep a conducting state, and the first conducting piece 10 conducts the positive electrode cap 5 and the circuit board 3 with good effect.

As shown in fig. 4, the rechargeable battery further includes a limiting portion 15 disposed on the plastic cap 4 and a limiting groove 16 disposed on the housing 1, where the limiting portion 15 can be adapted to the limiting groove 16.

Preferably, the limit groove 16 is provided on the inner wall of the housing 1. In the actual assembly process, the shell 1 is sleeved outside the plastic cap 4, the limiting part 15 is clamped with the limiting groove 16, the rapid alignment assembly of the shell 1 and the plastic cap 4 is facilitated, the assembled shell 1 and the plastic cap 4 can be positioned more accurately, the assembled avoidance groove 6 is aligned with and communicated with the opening groove 8, and the external charger is convenient to extend into the avoidance groove 6 from the opening groove 8 to be connected with the charging circuit module 9. The limiting groove 16 is arranged on the inner wall of the shell 1, the limiting groove 16 cannot be seen from the outer surface of the shell 1, and the attractiveness after assembly is improved.

Further, the rechargeable battery further comprises a through hole 17 penetrating through the top end of the plastic cap 4, and the first conducting member 10 is electrically connected with the positive electrode cap 5 after penetrating through the through hole 17.

In the actual installation process, the through holes 17 are additionally arranged, so that the circumference of the first conducting piece 10 can be limited, and the first conducting piece 10 can be further prevented from shaking or swaying relative to the circuit board 3 or the anode cap 5, thereby improving the stability of the utility model.

Further, the rechargeable battery further includes a second conductive member (not shown) electrically connected to the negative electrode tab 12 of the battery cell 2 and the case 1, respectively.

In the actual use process, the second conducting piece can be a metal sheet or a metal block, and the second conducting piece and the negative electrode tab 12 are used for conducting the core 2 and the shell 1. The positive electrode cap 5 and the positive electrode of the battery cell 2 are conducted through the positive electrode tab 11, the first conducting member 10 and the circuit board 3. The battery core 2, the plastic cap 4, the circuit board 3, the positive electrode cap 5 and the shell 1 are convenient to assemble and connect.

Further, the rechargeable battery further comprises a guide groove 19 arranged on the plastic cap 4, the guide groove 19 is opposite to the clamping groove 7, and the circuit board 3 can be inserted into the guide groove 19.

In the actual use process, the guide groove 19 is additionally arranged to further limit the position between the circuit board 3 and the plastic cap 4, thereby being beneficial to the rapid assembly of the circuit board 3 and the plastic cap 4.

Further, the plastic cap 4 includes a cap body 41 inserted into the positive electrode cap 5, a first connecting portion 42 and a second connecting portion 43 respectively disposed on the cap body 41, a first hollow groove 44 disposed on the first connecting portion 42, and a second hollow groove 45 disposed on the second connecting portion 43, and the avoiding groove 6 and the clamping groove 7 are respectively surrounded by outer walls of the first connecting portion 42 and the second connecting portion 43; the first conductive member 10 is electrically connected to the positive electrode cap 5 after passing through the cap body 41.

Specifically, the length direction of the avoidance groove 6 is perpendicular to the horizontal direction; the limiting portion 15, the guide groove 19 and the through hole 17 are respectively provided on the cap body 41. In the in-service use, enclose through the outer wall of first connecting portion 42 and second connecting portion 43 and establish into the vertical groove 6 of dodging that sets up, not only be convenient for with the vertical setting of charging circuit module 9 in dodging groove 6, the outer wall of first connecting portion 42 and second connecting portion 43 can also directly use as the plug-in housing of Type-C interface moreover. The first hollow groove 44 and the second hollow groove 45 are additionally arranged, so that the weight of the plastic cap 4 is reduced, and the production cost of the plastic cap 4 is reduced.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims

1. A rechargeable battery, characterized by: the battery pack comprises a shell (1), a battery cell (2), a circuit board (3) and a plastic cap (4), a positive electrode cap (5), an avoidance groove (6), an open groove (8), a clamping groove (7), a charging circuit module (9) and a first conducting piece (10), wherein the battery cell (2), the circuit board (3) and the plastic cap (4) are sequentially arranged in the shell (1) from bottom to top, the positive electrode cap (5) is positioned above the plastic cap (4) and can be inserted into the plastic cap (4), the avoidance groove (6) is formed in the plastic cap (4), the open groove (8) is formed in the shell (1) and can be communicated with the avoidance groove (6), the clamping groove (7) is formed in the plastic cap (4) and can be communicated with the avoidance groove (6), and the charging circuit module (9) is arranged on the circuit board (3) and the first conducting piece (10) is arranged on the circuit board (3) and can be electrically connected with the circuit board (3); the circuit board (3) can be matched with the clamping groove (7) in a concave-convex mode, the charging circuit module (9) protrudes into the avoidance groove (6), and the first conducting piece (10) can be electrically connected with the positive electrode cap (5) after penetrating through the plastic cap (4); the circuit board (3) is electrically connected with the battery core (2).

2. A rechargeable battery according to claim 1, wherein: the rechargeable battery further comprises a positive electrode lug (11) and a negative electrode lug (12) which are respectively arranged on the battery core (2), and a positive electrode needle sleeve (13) and a negative electrode needle sleeve (14) which are respectively arranged on the circuit board (3), wherein the positive electrode lug (11) is welded with the positive electrode needle sleeve (13); the negative electrode tab (12) is welded with the negative electrode needle sleeve (14).

3. A rechargeable battery according to claim 1, wherein: the rechargeable battery further comprises a limiting part (15) arranged on the plastic cap (4) and a limiting groove (16) arranged on the shell (1), and the limiting part (15) can be matched with the limiting groove (16) in a concave-convex mode.

4. A rechargeable battery according to claim 1, wherein: the rechargeable battery further comprises a through hole (17) penetrating through the top end of the plastic cap (4), and the first conducting piece (10) penetrates through the through hole (17) and is electrically connected with the positive electrode cap (5).

5. A rechargeable battery according to claim 1, wherein: the rechargeable battery also comprises a guide groove (19) arranged on the plastic cap (4), the guide groove (19) and the clamping groove (7) are arranged oppositely, and the circuit board (3) can be inserted into the guide groove (19).

6. A rechargeable battery according to any one of claims 1-5, wherein: the plastic cap (4) comprises a cap body (41) which is spliced with the positive electrode cap (5), a first connecting part (42) and a second connecting part (43) which are respectively arranged on the cap body (41), a first hollowed-out groove (44) which is arranged on the first connecting part (42) and a second hollowed-out groove (45) which is arranged on the second connecting part (43), and the avoidance groove (6) and the clamping groove (7) are respectively formed by encircling the outer walls of the first connecting part (42) and the second connecting part (43); the first conducting piece (10) penetrates through the cap body (41) and is electrically connected with the positive electrode cap (5).

7. A rechargeable battery according to claim 6, wherein: the length direction of the avoidance groove (6) is vertical to the horizontal direction.