Battery cell
By designing the lap portion and the bending portion of the protective part in the battery cell, the problems of bumping and friction when the battery cell is installed in the shell are solved, and the yield and performance of the battery cell are improved.
Patent Information
- Application Number
- CN202422560190.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-10-23
AI Technical Summary
When the battery cell is installed in the shell, it is easy to collide or rub against the inner wall of the shell, causing damage to the battery cell or degradation of performance.
A protective part is designed, including a placing part and a bending part. The placing part is located on one side of the battery core, and the bending part extends along the circumference of the battery core and is located between the inner side walls of the shell, which is used to protect the battery core from bumps and friction when it is installed in the shell.
It effectively reduces the chances of collision and friction between the battery cell and the shell, improves the yield rate and performance of the battery cell, and the protective parts are made of flexible materials to ensure smooth installation of the battery cell.
Smart Images
Figure CN223462308U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a battery monomer. BACKGROUND
[0002] The battery monomer includes the shell and the electric core etc., when the electric core is installed into the shell, usually the end of the electric core is towards the opening of the shell, then the end of the electric core is installed into the shell first, finally the electric core is pushed into the shell completely.
[0003] But, because the gap between the electric core and the inner wall of the shell is small, the end of the electric core towards the opening of the shell is easy to knock with the shell in the initial stage of installing the electric core into the shell, and then the electric core is damaged to cause the battery monomer to be scrapped or the performance to reduce.
[0004] Therefore, it is urgent to provide a battery monomer to solve the above technical problems. UTILITY MODEL CONTENTS
[0005] The utility model discloses a battery monomer, when the electric core is installed into the shell, the protection piece can play the protection role to the electric core, and the probability of knocking or rubbing of the electric core and the shell is reduced.
[0006] In order to achieve this purpose, the utility model adopts the following technical scheme:
[0007] The battery monomer includes:
[0008] The shell is provided with an opening;
[0009] The electric core is arranged in the shell, and the electric core can be installed into the shell through the opening. The electric core includes a first end and a second end arranged oppositely, and the end of the electric core away from the opening in the shell is the first end;
[0010] The protection piece includes a placing part and a bending part, the placing part is located on the side of the first end away from the second end, the bending part is connected with the side wall of the placing part and is bent in the direction towards the second end, the bending part extends along the circumference of the electric core and is connected at the head and tail, and the bending part is located between the electric core and the inner side wall of the shell.
[0011] Optionally, in the direction from the first end to the second end, the electric core includes a first electric core part and a second electric core part connected with each other, the spacing between the side wall of the first electric core part and the inner side wall of the shell is greater than the spacing between the side wall of the second electric core part and the inner side wall of the shell, and the bending part is located between the first electric core part and the inner side wall of the shell.
[0012] Optionally, the protection piece further includes a protruding part, the protruding part is protruded on the side of the bending part towards the inner side wall of the shell, the protruding part extends along the circumference of the electric core and is connected at the head and tail, and at least one of the connection between the bending part and the placing part and the bending part is a flexible element, and the placing part is fixedly connected with the side of the first end away from the second end.
[0013] Optionally, the protruding part is located on the side of the bending part away from the placing part.
[0014] Optionally, the protruding part is spaced apart from the inner side wall of the shell.
[0015] Optionally, the protection member is an insulating element.
[0016] Optionally, the battery monomer further comprises a current collecting disc and a conductive terminal, the current collecting disc is arranged on the side of the first end away from the second end, the placing part is arranged on the side of the current collecting disc away from the battery cell, the conductive terminal is insulated and arranged in the shell and the placing part, and the conductive terminal is connected with the current collecting disc.
[0017] Optionally, the placing part is provided with a first through hole, the conductive terminal is arranged in the first through hole, and the hole wall of the first through hole is spaced apart from the conductive terminal.
[0018] Optionally, the battery monomer further comprises a first insulating member, the first insulating member covers the side of the inner wall of the shell facing the current collecting disc, and the conductive terminal is insulated and arranged in the first insulating member.
[0019] Optionally, the shell is provided with a second through hole, the first insulating member is provided with a third through hole, the conductive terminal is arranged in the second through hole and the third through hole, the edge of the third through hole is provided with a folding edge, the folding edge extends along the circumference of the third through hole and is connected end to end, and the folding edge is clamped between the hole wall of the second through hole and the side wall of the conductive terminal.
[0020] The utility model discloses the beneficial effects of the following:
[0021] The battery monomer provided by the utility model is provided with a protection member, when the battery cell is loaded into the shell, first, the first end of the battery cell with the placing part is aligned with the opening of the shell, then the first end is loaded into the shell, and finally the whole battery cell is pushed into the shell, in the initial stage of loading the battery cell into the shell, the bending part can avoid the side wall close to the first end of the battery cell from colliding or rubbing with the shell, and the connecting part of the bending part and the placing part can avoid the edge of the first end from colliding or rubbing with the shell, so it can be seen that the setting of the protection member plays a protection role on the battery cell when the battery cell is loaded into the shell, reduces the probability of the battery cell colliding or rubbing with the shell, and provides a guarantee role on the yield rate and performance of the battery monomer. DRAWINGS
[0022] Figure 1 is a cross-sectional structure schematic view of the battery monomer provided by the utility model;
[0023] Figure 2 is Figure 1 a local enlarged view of A in Fig.
[0024] in the figure:
[0025] 100, housing; 200, battery cell; 211, first end; 212, second end; 221, first battery cell part; 222, second battery cell part; 300, protector; 310, placing part; 311, first through hole; 320, bending part; 330, protruding part; 400, current collector; 500, conductive terminal; 510, terminal body; 520, first flange; 530, second flange; 600, first insulating part; 610, folded edge; 700, second insulating part; 800, sealing part. DETAILED DESCRIPTION
[0026] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.
[0027] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0029] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.
[0030] The embodiment provides a battery monomer, when a battery cell is loaded into a shell, a protection piece can protect the battery cell, and the probability of collision between the battery cell and the shell is reduced.
[0031] Specifically, as shown in Figure 1 and Figure 2 , the battery monomer comprises a shell 100, a battery cell 200 and a protection piece 300, the shell 100 is provided with an opening, the battery cell 200 is arranged in the shell 100, the battery cell 200 can be loaded into the shell 100 through the opening, the battery cell 200 comprises a first end 211 and a second end 212 arranged oppositely, the end of the battery cell 200 away from the opening in the shell 100 is the first end 211, the protection piece 300 comprises a placing part 310 and a bending part 320, the placing part 310 is located on the side of the first end 211 away from the second end 212, the bending part 320 is connected with the side wall of the placing part 310 and is bent in the direction towards the second end 212, the bending part 320 extends along the circumference of the battery cell 200 and is connected at the head and tail, and the bending part 320 is located between the battery cell 200 and the inner side wall of the shell 100.
[0032] Based on the above design, when the battery cell 200 is loaded into the shell 100, the first end 211 of the battery cell 200 with the placing part 310 is first aligned with the opening of the shell 100, then the first end 211 is loaded into the shell 100, and finally the whole battery cell 200 is pushed into the shell 100, at the initial stage of loading the battery cell 200 into the shell 100, the bending part 320 can avoid the side wall of the battery cell 200 close to the first end 211 from colliding or rubbing against the shell 100, and the connection part of the bending part 320 and the placing part 310 can avoid the edge of the first end 211 from colliding or rubbing against the shell 100, so it can be seen that the setting of the protection piece 300 plays a protection role on the battery cell 200 when the battery cell 200 is loaded into the shell 100, the probability of collision or rubbing between the battery cell 200 and the shell 100 is reduced, and the good product rate and performance of the battery monomer are guaranteed.
[0033] It can be understood that, before the battery cell 200 is loaded into the shell 100, the first end 211 of the battery cell 200 faces the opening of the shell 100, and the second end 212 is located on the side of the battery cell 200 away from the opening, after the battery cell 200 is loaded into the shell 100, the first end 211 of the battery cell 200 is away from the opening, and the second end 212 faces the opening.
[0034] Optionally, as shown in Figure 1 and Figure 2As shown in the figure, in the direction from the first end 211 to the second end 212, the battery cell 200 comprises a first battery cell part 221 and a second battery cell part 222 connected together, the gap between the side wall of the first battery cell part 221 and the inner side wall of the shell 100 is larger than the gap between the side wall of the second battery cell part 222 and the inner side wall of the shell 100, and the bending part 320 is located between the first battery cell part 221 and the inner side wall of the shell 100, so as to avoid the first battery cell part 221 from being damaged by the extrusion of the inner side wall of the shell 100 in the initial stage of the battery cell 200 being loaded into the shell 100.
[0035] Further, as shown in the figures, Figure 1 and Figure 2 the protector 300 further comprises a protruding part 330, the protruding part 330 is protruded from the side of the bending part 320 facing the inner side wall of the shell 100, the protruding part 330 extends along the circumference of the battery cell 200 and is connected at the head and tail, at least one of the connection between the bending part 320 and the placing part 310 and the bending part 320 is a flexible element, the placing part 310 is fixedly connected to the side of the first end 211 away from the second end 212, in the initial stage of the battery cell 200 being loaded into the shell 100, if the coaxiality of the battery cell 200 and the shell 100 is low, the inner side wall of the shell 100 applies a force to the protruding part 330 in the direction of the axis of the shell 100, so that the bending part 320 swings in the direction of the axis of the shell 100 and drives the battery cell 200 to slightly displace, thereby realizing the guiding effect on the battery cell 200, so that the battery cell 200 can be more smoothly loaded into the shell 100.
[0036] In the embodiment, the connection between the bending part 320 and the placing part 310, the bending part 320, the protruding part 330 and the placing part 310 are integrally formed flexible elements, which are convenient for production and processing, and when the inner side wall of the shell 100 applies a force to the protruding part 330, the flexible protruding part 330 can avoid damaging the inner side wall of the shell 100.
[0037] Further, as shown in the figures, Figure 1 and Figure 2 the protruding part 330 is spaced apart from the inner side wall of the shell 100, in the initial stage of the battery cell 200 being loaded into the shell 100, if the coaxiality of the battery cell 200 and the shell 100 is low, the spacing between the protruding part 330 and the inner side wall of the shell 100 makes the bending part 320 have a larger space for movement, which has the effect of improving the guiding effect of the protruding part 330 on the battery cell 200.
[0038] Optionally, as shown in the figures, Figure 1 and Figure 2 the protruding part 330 is located on the side of the bending part 320 away from the placing part 310, so as to improve the flexibility of the bending part 320 swinging in the direction of the axis of the shell 100.
[0039] Optionally, the protection member 300 is an insulating element to avoid the electric cell 200 conducting electricity with the shell 100 through the protection member 300. In the embodiment, the protection member 300 is made of a material having certain flexibility, high temperature resistance and chemical reaction resistance, such as LCP, PPS or PEEK. The specific preparation process and components are prior art in the field and will not be described here.
[0040] Optionally, as shown in Figure 1 and Figure 2 , the battery cell further comprises a current collecting disc 400 and a conductive terminal 500. The current collecting disc 400 is arranged on the side of the first end 211 away from the second end 212, and the rest portion 310 is arranged on the side of the current collecting disc 400 away from the electric cell 200. The conductive terminal 500 is insulatedly arranged in the shell 100 and the rest portion 310. The conductive terminal 500 is fixedly connected with the current collecting disc 400, that is, the rest portion 310 is fixedly connected with the side of the first end 211 away from the second end 212 through the current collecting disc 400, so as to realize the electric connection between the electric cell 200, the current collecting disc 400 and the conductive terminal 500.
[0041] Further, as shown in Figure 1 and Figure 2 , the rest portion 310 is provided with a first through hole 311, and the conductive terminal 500 is arranged in the first through hole 311. The hole wall of the first through hole 311 is arranged in a spaced manner with the conductive terminal 500, so as to avoid the problem that the rest portion 310 close to the conductive terminal 500 is melted when the conductive terminal 500 is welded and fixed with the current collecting disc 400.
[0042] Optionally, as shown in Figure 1 and Figure 2 , the battery cell further comprises a first insulating member 600. The first insulating member 600 covers the side of the inner wall of the shell 100 facing the current collecting disc 400. The conductive terminal 500 is insulatedly arranged in the first insulating member 600, so as to realize the insulation between the side of the inner wall of the shell 100 facing the current collecting disc 400, the current collecting disc 400 and the electric cell 200.
[0043] Further, as shown in Figure 1 and Figure 2 , the shell 100 is provided with a second through hole, and the first insulating member 600 is provided with a third through hole. The conductive terminal 500 is arranged in the second through hole and the third through hole. The edge of the third through hole is provided with a folded edge 610. The folded edge 610 extends along the circumference of the third through hole and is connected end to end. The folded edge 610 is clamped between the hole wall of the second through hole and the side wall of the conductive terminal 500, so as to avoid the problem that the side wall of the conductive terminal 500 and the hole wall of the second through hole are mistakenly short-circuited.
[0044] Further, as shown in Figure 1 and Figure 2As shown, the conductive terminal 500 includes a terminal body 510, a first flange 520 and a second flange 530, the first flange 520 and the second flange 530 are both protruded on the side wall of the terminal body 510 and both extend along the circumference of the terminal body 510 and are connected end to end, the terminal body 510 is arranged through the second through hole and the third through hole, and the flange 610 is clamped between the hole wall of the second through hole and the side wall of the terminal body 510. The first flange 520 is located in the shell 100, and the first flange 520 is welded and fixed with the current collector plate 400, the hole wall of the first through hole 311 is arranged in a spaced manner with the first flange 520, the edge of the third through hole is clamped between the first flange 520 and the edge of the second through hole, and the design of the first flange 520 and the second flange 530 can expand the volume of the conductive terminal 500, thereby improving the conductivity thereof. On the other hand, the edge of the third through hole clamped between the first flange 520 and the edge of the second through hole can improve the stability and reliability of the connection between the conductive terminal 500 and the shell 100, and also improve the stability and reliability of the connection between the first insulating piece 600 and the shell 100.
[0045] Further, as shown in Figure 1 and Figure 2 , the battery monomer further includes a second insulating piece 700, the second insulating piece 700 and the second flange 530 are both located outside the shell 100, the terminal body 510 is arranged through the second insulating piece 700, and the second insulating piece 700 is clamped between the edge of the second through hole and the second flange 530, thereby realizing the insulation of the conductive terminal 500 outside the shell 100, and also improving the stability and reliability of the connection between the conductive terminal 500 and the shell 100.
[0046] Further, as shown in Figure 1 and Figure 2 , the battery monomer further includes a sealing piece 800, the sealing piece 800 is located outside the shell 100, the sealing piece 800 is sleeved on the terminal body 510, and the sealing piece 800 is clamped between the second flange 530 and the edge of the second through hole to realize the sealing of the conductive terminal 500 and the shell 100. In the embodiment, the battery cell 200 is cylindrical, and in other embodiments, the battery cell 200 can also be square or other shapes. In the embodiment, the shell 100 is made of steel material, and in other embodiments, the shell 100 can also be other metal materials, which are not listed one by one here.
[0047] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.
Claims
1. A battery cell, characterized by The battery monomer comprises a shell (100), an electric core (200) and a protection member (300). The shell (100) is provided with an opening. The electric core (200) is arranged in the shell (100) and can be loaded into the shell (100) through the opening. The protection member (300) comprises a placing part (310) and a bending part (320).
2. The battery cell of claim 1, wherein, The placing part (310) is located on the side of the first end (211) away from the second end (212).
3. The battery cell of claim 2, wherein, The bending part (320) is connected with the side wall of the placing part (310) and bends in the direction towards the second end (212).
4. The battery cell of claim 3, wherein, The bending part (320) extends along the circumference of the electric core (200) and is connected end to end.
5. The battery cell of claim 3, wherein, The distance between the side wall of the first electric core part (221) and the inner side wall of the shell (100) is greater than the distance between the side wall of the second electric core part (222) and the inner side wall of the shell (100).
6. The battery cell of any one of claims 1-5, wherein, The bending part (320) is located between the first electric core part (221) and the inner side wall of the shell (100).
7. The battery cell of any one of claims 1-5, wherein, The protection member (300) further comprises a protruding part (330). The protruding part (330) protrudes from the side of the bending part (320) towards the inner side wall of the shell (100). The protruding part (330) extends along the circumference of the electric core (200) and is connected end to end. At least one of the connection between the bending part (320) and the placing part (310) and the bending part (320) is a flexible element. The placing part (310) is fixedly connected with the side of the first end (211) away from the second end (212). The protruding part (330) is located on the side of the bending part (320) away from the placing part (310). The protruding part (330) is spaced apart from the inner side wall of the shell (100). The protection member (300) is an insulating element. The battery monomer further comprises a current collecting disc (400) and a conductive terminal (500). The current collecting disc (400) is arranged on the side of the first end (211) away from the second end (212). The placing part (310) is arranged on the side of the current collecting disc (400) away from the electric core (200). The conductive terminal (500) is insulated and arranged in the shell (100) and the placing part (310). The conductive terminal (500) is connected with the current collecting disc (400).
8. The battery cell of claim 7, wherein, The placing part (310) is provided with a first through hole (311), the conductive terminal (500) is arranged in the first through hole (311), and the hole wall of the first through hole (311) is arranged in a spaced mode with the conductive terminal (500).
9. The battery cell of claim 7, wherein, The battery monomer further comprises a first insulating part (600), the first insulating part (600) is covered on the side of the inner wall of the shell (100) towards the current collector (400), and the conductive terminal (500) is arranged in the first insulating part (600) in an insulated mode.
10. The battery cell of claim 9, wherein, The shell (100) is provided with a second through hole, the first insulating part (600) is provided with a third through hole, the conductive terminal (500) is arranged in the second through hole and the third through hole, the edge of the third through hole is provided with a folded edge (610), the folded edge (610) extends along the circumference of the third through hole and is connected in a head-to-tail mode, and the folded edge (610) is arranged between the hole wall of the second through hole and the side wall of the conductive terminal (500).