Battery convenient to assemble

Abstract

The utility model discloses a battery convenient to assemble, which comprises a battery cell, a charge and discharge control board, a shell and a support, the battery cell is electrically connected with the charge and discharge control board, the battery cell is arranged in the shell, the charge and discharge control board is fixed on the support, the support is installed on the shell, and the charge and discharge control board is fixed on the support. And the shell is connected with the bracket through a buckle structure. The assembly is convenient, and the production efficiency is improved; meanwhile, expensive equipment does not need to be arranged for buckle assembly, and the production cost can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of batteries, and specifically relates to a battery that is easy to assemble. Background Technology

[0002] Existing energy storage batteries, such as lithium-ion, nickel-metal hydride, and nickel-cadmium batteries, typically consist of cells, a casing, and a BMS (Battery Management System) protection board. The BMS protection board is mounted on an injection-molded part, which is then fixed to the casing via the injection-molded part. Currently, the injection-molded parts of energy storage batteries are usually fixed to the casing using assembly methods such as sealing, grooving, laser welding, ultrasonic welding, and gluing. These processes are complex, inconvenient to assemble, and have low production efficiency. Furthermore, the equipment required for these assembly methods is expensive, resulting in high production costs. Utility Model Content

[0003] To solve the above problems, the primary objective of this utility model is to provide a battery that is easy to assemble and has high production efficiency;

[0004] The primary objective of this invention is to provide a battery that is easy to assemble and has low production costs.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] This utility model provides a battery that is easy to assemble, comprising: a battery cell, a charge / discharge control board, a housing, and a bracket. The battery cell is electrically connected to the charge / discharge control board and is disposed inside the housing. The charge / discharge control board is fixed to the bracket, and the bracket is mounted on the housing. The housing and the bracket are connected by a snap-fit ​​structure.

[0007] In this application, the connection between the bracket and the housing is achieved through a snap-fit ​​structure, which facilitates assembly and improves production efficiency; at the same time, snap-fit ​​assembly does not require expensive equipment, which can reduce production costs.

[0008] Furthermore, the side wall of the bracket is provided with a snap-fit ​​protrusion, and the housing is provided with a snap-fit ​​position, and the snap-fit ​​protrusion snaps into the snap-fit ​​position.

[0009] Furthermore, the locking position adopts a locking hole, which is formed on the side wall of the housing. The locking protrusion includes a retaining surface, a positioning plane, and an inclined surface, which are connected in sequence. The retaining surface locks against the upper wall surface of the locking hole, and the positioning plane is disposed within the locking hole. The upper part of the inclined surface is disposed within the locking hole, and the lower part extends into the housing. Through the above structural design, a stable locking between the locking protrusion and the locking hole can be ensured, while preventing the locking protrusion from protruding outside the locking hole.

[0010] Furthermore, the side wall of the housing is provided with a snap-fit ​​protrusion, and the bracket is provided with a snap-fit ​​position, and the snap-fit ​​protrusion snaps into the snap-fit ​​position.

[0011] Furthermore, the casing is made of conductive material, and the battery also includes a negative electrode connecting piece and a positive electrode post. The lower end of the positive electrode post is electrically connected to the charge / discharge control board, and the upper end protrudes outside the casing. The bottom of the casing protrudes downward to form the negative electrode portion. The upper end of the battery cell is provided with a positive electrode plate, and the lower end is provided with a negative electrode plate. The positive electrode plate is electrically connected to the charge / discharge control board, and the negative electrode plate is connected to the negative electrode portion. One end of the negative electrode connecting piece is electrically connected to the casing, and the other end is electrically connected to the charge / discharge control board.

[0012] In this embodiment, the positive and negative terminals protruding from the steel shell serve as the positive and negative terminals of the battery, respectively, for charging and discharging connection. The negative terminal is electrically connected to the charging and discharging control board through the shell and negative terminal connecting piece. This allows the shell to be used as an intermediate electrical connection component, while avoiding direct welding and fixing of the shell to the charging and discharging control board, thus facilitating the assembly of the charging and discharging control board.

[0013] Furthermore, the negative electrode connecting piece is attached to the inner wall of the housing, and a connecting end protrudes horizontally on the negative electrode connecting piece, which is electrically connected to the charge and discharge control board.

[0014] Furthermore, a positioning protrusion is provided on the connecting end, and a positioning groove is provided on the charging and discharging control board, with the positioning protrusion engaging within the positioning groove.

[0015] Furthermore, the charge / discharge control board adopts a PCBA board with BMS function.

[0016] Furthermore, the bracket is also provided with a charging and discharging interface, which is exposed on the housing. The charging and discharging control board is also provided with charging and discharging terminals, which are disposed inside the charging and discharging interface.

[0017] The advantages of this invention are as follows: compared with the prior art, the connection between the bracket and the shell is achieved through a snap-fit ​​structure, which facilitates assembly and improves production efficiency; at the same time, snap-fit ​​assembly does not require expensive equipment, which can reduce production costs. Attached Figure Description

[0018] Figure 1 It is an isometric view of the battery.

[0019] Figure 2 This is an exploded view of the battery.

[0020] Figure 3 This is a cross-sectional view of the battery.

[0021] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0022] Figure 5 yes Figure 3 A magnified view of a section at point B.

[0023] Figure 6 This is a schematic diagram of the support structure.

[0024] Figure 7 This is a schematic diagram of the charge / discharge control board and the negative electrode connection piece.

[0025] In the diagram: 1. Battery cell; 2. Charge / discharge control board; 21. Positioning groove; 22. Charge / discharge terminal; 3. Housing; 4. Bracket; 41. Charge / discharge interface; 5. Snap-fit ​​protrusion; 51. Snap-fit ​​surface; 52. Positioning plane; 53. Angled surface; 6. Snap-fit ​​position; 7. Negative electrode connecting piece; 71. Connecting end; 72. Positioning protrusion; 8. Positive electrode post; 9. Negative electrode part; 11. Positive electrode plate; 12. Negative electrode plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] To achieve the above objectives, the technical solution of this utility model is as follows:

[0028] See Figure 1-7 As shown, this embodiment provides a battery that is easy to assemble, including: a battery cell 1, a charge / discharge control board 2, a housing 3, and a bracket 4. The battery cell 1 is electrically connected to the charge / discharge control board 2. The battery cell 1 is disposed inside the housing 3. The charge / discharge control board 2 is fixed on the bracket 4. The bracket 4 is installed on the housing 3, and the housing 3 and the bracket 4 are connected by a snap-fit ​​structure.

[0029] In this embodiment, the bracket 4 is made of plastic injection molding, and the bracket 4 is connected to the housing 3 through a snap-fit ​​structure, which facilitates assembly and improves production efficiency. At the same time, the bracket 4 and the housing 3 are assembled by snap-fit ​​without the need for expensive equipment, which can reduce production costs.

[0030] Furthermore, the side wall of the bracket 4 is provided with a snap-fit ​​protrusion 5, and the housing 3 is provided with a snap-fit ​​position 6, and the snap-fit ​​protrusion 5 snaps into the snap-fit ​​position 6.

[0031] Further, see Figure 4-6The snap-fit ​​position 6 uses a snap-fit ​​hole, which is formed on the side wall of the housing 3. The snap-fit ​​protrusion 5 includes a snap-fit ​​surface 51, a positioning plane 52, and an inclined surface 53. The snap-fit ​​surface 51, the positioning plane 52, and the inclined surface 53 are connected in sequence. The snap-fit ​​surface 51 snaps against the upper wall surface of the snap-fit ​​position 6, and the positioning plane 52 is set inside the snap-fit ​​position 6. The upper part of the inclined surface 53 is set inside the snap-fit ​​position 6, and the lower part extends into the housing 3. Through the above structure, a stable snap-fit ​​between the snap-fit ​​protrusion 5 and the snap-fit ​​position 6 can be ensured, while preventing the snap-fit ​​protrusion 5 from protruding outside the snap-fit ​​position 6.

[0032] Furthermore, the casing 3 is made of steel, and the battery also includes a negative electrode connecting piece 7 and a positive electrode post 8. The lower end of the positive electrode post 8 is electrically connected to the charge / discharge control board 2, and the upper end protrudes out of the casing 3. The bottom of the casing 3 protrudes downward to form a negative electrode part 9. A positive electrode plate 11 is provided at the upper end of the cell 1, and a negative electrode plate 12 is provided at the lower end. The positive electrode plate 11 is electrically connected to the charge / discharge control board 2, and the negative electrode plate 12 is connected to the negative electrode part 9. One end of the negative electrode connecting piece 7 is electrically connected to the casing 3, and the other end is electrically connected to the charge / discharge control board 2.

[0033] In this embodiment, the positive electrode post 8 and the negative electrode part 9 protruding from the steel shell serve as the positive and negative electrodes of the battery, respectively, for the charging and discharging connection of the battery. The negative electrode part 9 is electrically connected to the charging and discharging control board 2 through the shell 3 and the negative electrode connecting piece 7. This allows the shell 3 to be used as an intermediate electrical connection component, while avoiding direct welding and fixing of the shell 3 to the charging and discharging control board 2, thus facilitating the assembly of the charging and discharging control board 2.

[0034] Furthermore, the negative electrode connecting piece 7 is fitted to the inner wall of the housing 3, and a connecting end 71 protrudes horizontally from the negative electrode connecting piece 7, which is electrically connected to the charge / discharge control board 2. The negative electrode connecting piece 7 uses a copper or aluminum sheet with a heat dissipation cavity, which can not only connect the negative electrode of the cell 1 to the charge / discharge control board 2, but also dissipate the heat of the charge / discharge control board 2 to the outside of the battery through the housing 3, thus achieving the dual effects of electrical connection and heat dissipation.

[0035] Further, see Figure 7 The connecting end 71 is provided with a positioning protrusion 72, and the charging and discharging control board 2 is provided with a positioning groove 21, and the positioning protrusion 72 is engaged in the positioning groove 21.

[0036] Furthermore, the charge / discharge control board 2 adopts a PCBA board with BMS function.

[0037] Furthermore, the bracket 4 is also provided with a charging and discharging interface 41, which is exposed on the housing 3. The charging and discharging control board 2 is also provided with a charging and discharging terminal 22, which is located inside the charging and discharging interface 41.

[0038] Furthermore, the charging / discharging terminal 22 is a Type-C terminal. This allows the battery to be charged and discharged via the Type-C terminal.

[0039] Furthermore, the battery assembly process of this application is as follows:

[0040] 1. Insert the battery cell 1 into the housing 3 and inject an appropriate amount of electrolyte;

[0041] 2. The positive electrode 11 of the battery cell 1 is welded to the charge / discharge control board 2, and the negative electrode 12 is welded to the negative electrode part 9;

[0042] 3. The charging and discharging control board 2, positive terminal post 8, and negative terminal connecting piece 7 are injection molded onto the bracket 4 to form a modular whole, and then installed into the housing 3.

[0043] Furthermore, when the positive terminal and negative terminal 9 are connected to an external circuit, the circuit principle of the battery of this application is as follows: the positive terminal at the upper end of the casing 3 serves as the positive terminal of the battery, and the negative terminal 9 protruding from the bottom of the casing 3 serves as the negative terminal of the battery. The negative terminal 9 is electrically connected to the charge and discharge control board 2 through the casing 3 and the negative terminal connecting piece 7 in sequence, forming a conductive circuit of the battery; the battery cell 1 is electrically connected to the charge and discharge control board 2, the casing 3, and the negative terminal connecting piece 7 through the positive terminal piece 11 and the negative terminal piece 12, forming an internal conductive circuit of the battery cell 1.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery that is easy to assemble, characterized in that, include: The battery cell, charge / discharge control board, housing, and bracket are provided. The battery cell is electrically connected to the charge / discharge control board and is disposed inside the housing. The charge / discharge control board is fixed to the bracket and the bracket is mounted on the housing. The housing and the bracket are connected by a snap-fit ​​structure. The casing is made of conductive material. The battery also includes a negative electrode connecting piece and a positive electrode post. The lower end of the positive electrode post is electrically connected to the charge / discharge control board, and the upper end protrudes outside the casing. The bottom of the casing protrudes downward to form a negative electrode portion. A positive electrode plate is provided at the upper end of the battery cell, and a negative electrode plate is provided at the lower end. The positive electrode plate is electrically connected to the charge / discharge control board, and the negative electrode plate is connected to the negative electrode portion. One end of the negative electrode connecting piece is electrically connected to the casing, and the other end is electrically connected to the charge / discharge control board.

2. The battery as described in claim 1, characterized in that, The side wall of the bracket is provided with a snap-fit ​​protrusion, and the housing is provided with a snap-fit ​​position, and the snap-fit ​​protrusion snaps into the snap-fit ​​position.

3. The battery as described in claim 2, characterized in that, The snap-fit ​​position adopts a snap-fit ​​hole, which is opened on the side wall of the housing. The snap-fit ​​protrusion includes a snap-fit ​​surface, a positioning plane, and an inclined surface. The snap-fit ​​surface, positioning plane, and inclined surface are connected in sequence. The snap-fit ​​surface snaps against the upper wall surface of the snap-fit ​​hole. The positioning plane is disposed in the snap-fit ​​hole. The upper part of the inclined surface is disposed in the snap-fit ​​hole, and the lower part extends into the housing.

4. The battery as described in claim 1, characterized in that, The side wall of the housing is provided with a snap-fit ​​protrusion, and the bracket is provided with a snap-fit ​​position, and the snap-fit ​​protrusion snaps into the snap-fit ​​position.

5. A battery that is easy to assemble as described in claim 1, characterized in that, The negative electrode connecting piece is attached to the inner wall of the shell, and a connecting end protrudes horizontally on the negative electrode connecting piece. The connecting end is electrically connected to the charge and discharge control board.

6. A battery that is easy to assemble as described in claim 5, characterized in that, The connection end is provided with a positioning protrusion, and the charging and discharging control board is provided with a positioning groove, and the positioning protrusion is engaged in the positioning groove.

7. The battery as described in claim 1, characterized in that, The bracket is also provided with a charging and discharging interface, which is exposed on the housing. The charging and discharging control board is also provided with charging and discharging terminals, which are located inside the charging and discharging interface.

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