Battery cell capable of being mounted on surface

Abstract

The invention belongs to the field of new energy, and particularly relates to a surface-mountable battery cell, which comprises: a shell having an accommodating cavity; the battery cell assembly is arranged in the accommodating cavity, and a first current collector and a second current collector are arranged on the battery cell assembly; one end of the first patch pin penetrates through the shell to be connected with the first current collector, and the other end of the first patch pin is exposed out of the shell; one end of the second patch pin penetrates through the shell to be connected with the second current collector, and the other end of the second patch pin is exposed out of the shell. According to the invention, whether the battery cell is independently mounted on the mounting surface or a plurality of battery cells are mounted on the mounting surface in series or in parallel, the operation is relatively convenient and simple, so that when the battery cell goes wrong, the maintenance and replacement difficulty is lower.

Description

Technical Field

[0001] The invention belongs to the field of new energy, and in particular relates to a surface-mountable battery cell. Background Art

[0002] The battery cells are divided into three types: aluminum shell battery cells, soft pack battery cells (also known as "polymer battery cells"), and cylindrical battery cells, with different specifications. The process of assembling them on the circuit board and assembling them on the circuit board after series and parallel connection is relatively cumbersome, and it is difficult to repair and replace them;

[0003] For example, a coating structure, a battery cell and a battery (application number CN202122982187.8) disclosed in a prior patent, the coating structure is used to coat the battery cell, the battery cell includes a battery cell body, an anode contact part and a cathode contact part, the battery cell body includes a first end and a second end opposite to each other, the anode contact part is arranged at the first end, and the cathode contact part is arranged at the second end, and the coating structure includes a first coating part, a second coating part and a third coating part. The first coating part is coated on the outer side of the part between the first end and the second end of the battery cell body, the second coating part is coated on the first end, the second coating part is arranged to expose the anode contact part, the third coating part is coated on the second end, and the third coating part is arranged to expose the cathode contact part. In the battery cell structure disclosed in the prior patent, when it is used, whether it is assembled on a circuit board alone or multiple batteries are assembled on a circuit board for series or parallel connection, the operation is relatively cumbersome, making it difficult to repair and replace when there is a problem with the battery cell. Summary of the invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a surface-mounted battery cell, which is convenient and simple to operate whether a single battery cell is assembled on a circuit board or multiple battery cells are assembled on a circuit board for series or parallel connection, so that when problems occur in the battery cell, maintenance and replacement are less difficult.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows.

[0006] A surface-mountable battery cell, characterized by comprising:

[0007] A housing having a receiving cavity;

[0008] A battery cell assembly, wherein the battery cell assembly is disposed in the accommodating cavity and a first current collector and a second current collector are disposed on the battery cell assembly;

[0009] A first patch pin, one end of which extends into the accommodation cavity to be connected to the first current collector, and the other end of which is exposed outside the housing;

[0010] The second patch pin has one end extending into the accommodating cavity to be connected with the second current collector, and the other end exposed outside the shell.

[0011] In the battery cell, the other end of the first patch pin and the other end of the second patch pin serve as the positive and negative electrodes of the battery cell respectively. When mounted individually, they are respectively aligned with the positive and negative electrodes at the mounting positions of the circuit board, and the battery cell is then directly mounted on the circuit board. When multiple battery cells are mounted in series or in parallel, the multiple battery cells are directly mounted on the corresponding mounting positions of the circuit board in the above manner, and the series or parallel connection can be achieved through the circuit board. That is, whether the battery cell is mounted individually on the mounting surface or multiple battery cells are mounted in series or in parallel on the mounting surface, the operation is relatively convenient and simple, so that when problems occur with the battery cell, repair and replacement are less difficult.

[0012] Further, the housing includes a first side surface, a second side surface and a bottom surface;

[0013] The first patch pin comprises a first connecting portion, a first side attaching portion, and a first bottom attaching portion, wherein the first connecting portion is connected to the first current collector, one end of the first side attaching portion is connected to the first connecting portion and then bent and arranged on the first side surface, and the first bottom attaching portion is connected to the other end of the first side attaching portion and then bent and arranged on the bottom surface;

[0014] The second patch pin includes a second connection part, a second side part, and a second bottom part. The second connection part is connected to the second current collector. One end of the second side part is connected to the second connection part and then bent and arranged on the second side surface. The second bottom part is connected to the other end of the second side part and then bent and arranged on the bottom surface. The first bottom part and the second bottom part are respectively used as the positive and negative electrodes of the battery cell. When mounted individually, the first bottom part and the second bottom part can be aligned with the positive and negative electrodes at the mounting position of the circuit board, respectively, and then the battery cell can be directly mounted on the circuit board; when multiple battery cells are mounted in series or in parallel, the multiple battery cells are directly mounted on the corresponding mounting positions of the circuit board in the above manner, and the series or parallel connection can be realized through the circuit board circuit; that is, whether the battery cell is mounted on the mounting surface individually or multiple battery cells are mounted on the mounting surface in series or in parallel, the operation is relatively convenient and simple, so that when there is a problem with the battery cell, it is less difficult to repair and replace.

[0015] Furthermore, the first side sticking portion is attached to the first side surface, the second side sticking portion is attached to the second side surface, and the first bottom sticking portion and the second bottom sticking portion are both attached to the bottom surface.

[0016] Furthermore, the first side surface and the second side surface are arranged opposite to each other on the shell.

[0017] Furthermore, the first SMD pin and the second SMD pin are symmetrically arranged.

[0018] Furthermore, a first channel penetrating to the accommodating cavity is provided at the first side surface, and a second channel penetrating to the accommodating cavity is provided at the second side surface; the first connecting portion is fitted and connected to the first current collector, and one end of the first connecting portion is bent and passed through the first channel and then connected to one end of the first side-adhering portion; the second connecting portion is fitted and connected to the second current collector, and one end of the second connecting portion is bent and passed through the second channel and then connected to one end of the second side-adhering portion.

[0019] Furthermore, the shell includes an upper shell and a lower shell, the upper shell is fixedly arranged on the lower shell, the accommodating cavity is formed between the upper shell and the lower shell, and the first channel and the second channel are formed at the connection between the upper shell and the lower shell.

[0020] Furthermore, one end of the first side sticking portion is connected to the first connecting portion and then bent at 90 degrees to be disposed on the first side surface, and the first bottom sticking portion is connected to the other end of the first side sticking portion and then bent at 90 degrees to be disposed on the bottom surface.

[0021] Furthermore, one end of the second side sticking portion is connected to the second connecting portion and then bent at 90 degrees to be disposed on the second side surface, and the second bottom sticking portion is connected to the other end of the second side sticking portion and then bent at 90 degrees to be disposed on the bottom surface.

[0022] Furthermore, the battery cell assembly is a lithium-ion battery cell.

[0023] In the present invention, the first bottom sticking portion and the second bottom sticking portion serve as the positive and negative electrodes of the battery cell respectively. When mounted individually, the first bottom sticking portion and the second bottom sticking portion can be aligned with the positive and negative electrodes at the mounting position of the circuit board respectively, and then the battery cell can be directly mounted on the circuit board; and when multiple battery cells are mounted in series or in parallel, the multiple battery cells are directly mounted on the corresponding mounting positions of the circuit board in the above manner, and the series or parallel connection can be realized through the circuit board; that is, whether the battery cell is mounted individually on the mounting surface or multiple battery cells are mounted in series or in parallel on the mounting surface, the operation is relatively convenient and simple, so that when problems occur in the battery cell, repair and replacement are less difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a cross-sectional view of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the hidden shell of the present invention.

[0027] 1. Shell; 11. First side surface; 111. First channel; 12. Second side surface; 121. Second channel; 13. Bottom surface; 14. Accommodating cavity; 15. Upper shell; 16. Lower shell;

[0028] 2. Cell assembly; 21. First current collector; 22. Second current collector;

[0029] 3. First SMD pin; 31. First connecting portion; 32. First side attaching portion; 33. First bottom attaching portion;

[0030] 4. Second patch pin; 41. Second connecting portion; 42. Second side patch portion; 43. Second bottom patch portion. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] See also Figure 1-3 , a surface mountable battery cell, which can be mounted on a circuit board, comprising:

[0033] The housing 1 has a receiving chamber 14;

[0034] A battery cell assembly 2, wherein the battery cell assembly 2 is disposed in the accommodating cavity 14, and a first current collector 21 and a second current collector 22 are disposed on the battery cell assembly 2;

[0035] A first SMD pin 3, one end of which extends into the accommodating cavity 14 and is connected to the first current collector 21, and the other end of which is exposed outside the housing 1;

[0036] One end of the second SMD pin 4 extends into the accommodating cavity 14 and is connected to the second current collector 22 , and the other end is exposed outside the housing 1 .

[0037] In this embodiment, the housing 1 includes a first side surface 11, a second side surface 12 and a bottom surface 13. The first side surface 11 and the second side surface 12 are side surfaces of the housing, namely, front, back, left, and right sides.

[0038] The first SMD pin 3 includes a first connecting portion 31, a first side portion 32, and a first bottom portion 33. The first connecting portion 31 is connected to the first current collector 21. One end of the first side portion 32 is connected to the first connecting portion 31 and then bent to the first side surface 11. The first bottom portion 33 is connected to the other end of the first side portion 32 and then bent to the bottom surface 13.

[0039] The second patch pin 4 includes a second connecting portion 41, a second side portion 42, and a second bottom portion 43. The second connecting portion 41 is connected to the second current collector 22. One end of the second side portion 42 is connected to the second connecting portion 41 and then bent to the second side surface 12. The second bottom portion 43 is connected to the other end of the second side portion 42 and then bent to the bottom surface 13.

[0040] In this embodiment, the first side sticking portion 32 is attached to the first side surface 11 , the second side sticking portion 42 is attached to the second side surface 12 , and the first bottom sticking portion 33 and the second bottom sticking portion 43 are both attached to the bottom surface 13 .

[0041] In this embodiment, the first side 11 and the second side 12 are relatively arranged on the shell 1, and the first current collector 21 and the second current collector 22 are also relatively arranged; that is, the first side 11 and the second side 12 can be the left and right sides of the shell 1, or the front and rear sides.

[0042] In this embodiment, the first SMD pin 3 and the second SMD pin 4 are symmetrically arranged.

[0043] In this embodiment, a first channel 111 penetrating to the accommodating cavity 14 is provided at the first side 11, and a second channel 121 penetrating to the accommodating cavity 14 is provided at the second side 12; the first connecting portion 31 is attached to the first current collector 21, and one end of the first connecting portion 31 is bent 90 degrees and then passes through the first channel 111 and is connected to one end of the first side attaching portion 32; the second connecting portion 41 is attached to the second current collector 22, and one end of the second connecting portion 41 is bent 90 degrees and then passes through the second channel 121 and is connected to one end of the second side attaching portion 42. The first SMD pin 3 and the second SMD pin 4 are both integrally formed of a metal conductive material.

[0044] In this embodiment, the shell 1 includes an upper shell 15 and a lower shell 16. The upper shell 15 is fixedly disposed on the lower shell. A accommodating cavity 14 is formed between the upper shell 15 and the lower shell 16, and a first channel 111 and a second channel 121 are formed at the connection between the upper shell 15 and the lower shell 16.

[0045] In this embodiment, one end of the first side sticking portion 32 is connected to the first connecting portion 31 and then bent 90 degrees to be disposed on the first side surface 11 , and the first bottom sticking portion 33 is connected to the other end of the first side sticking portion 32 and then bent 90 degrees to be disposed on the bottom surface 13 .

[0046] In this embodiment, one end of the second side sticking portion 42 is connected to the second connecting portion 41 and then bent 90 degrees to be disposed on the second side surface 12 , and the second bottom sticking portion 43 is connected to the other end of the second side sticking portion 42 and then bent 90 degrees to be disposed on the bottom surface 13 .

[0047] In this embodiment, the battery cell assembly 2 is a lithium-ion battery cell. Specifically, the positive and negative electrode materials of the lithium-ion battery cell inside are set according to the prior art; in other embodiments, the battery cell assembly 2 can also be a battery cell structure composed of other existing positive and negative electrode materials.

[0048] In this embodiment, it is necessary to indicate:

[0049] 1. Regardless of any material (not limited to lithium-ion batteries, including batteries for power storage made of any material, such as sodium-ion batteries, etc.) and any form (solid and liquid), battery components are within the scope of protection of the present invention;

[0050] 2. No matter how the pin structure is designed, as long as it can realize surface mount packaging, it is within the protection scope of the present invention; specifically, the structure of the first surface mount pin and the second surface mount pin is a preferred implementation method of the present invention, but it should be noted that any pin that can realize surface mount packaging should be within the protection scope of the present invention.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface mountable battery cell, characterized in that: include: A housing having a receiving cavity; A battery cell assembly, wherein the battery cell assembly is disposed in the accommodating cavity and a first current collector and a second current collector are disposed on the battery cell assembly; A first patch pin, one end of which extends into the accommodation cavity to be connected to the first current collector, and the other end of which is exposed outside the housing; The second patch pin has one end extending into the accommodating cavity to be connected with the second current collector, and the other end exposed outside the shell.

2. A surface mountable battery cell according to claim 1, characterized in that: The housing comprises a first side surface, a second side surface and a bottom surface; The first patch pin comprises a first connecting portion, a first side attaching portion, and a first bottom attaching portion, wherein the first connecting portion is connected to the first current collector, one end of the first side attaching portion is connected to the first connecting portion and then bent and arranged on the first side surface, and the first bottom attaching portion is connected to the other end of the first side attaching portion and then bent and arranged on the bottom surface; The second patch pin includes a second connecting portion, a second side portion, and a second bottom portion. The second connecting portion is connected to the second current collector. One end of the second side portion is connected to the second connecting portion and then bent to the second side surface. The second bottom portion is connected to the other end of the second side portion and then bent to the bottom surface.

3. A surface mountable battery cell according to claim 2, characterized in that: The first side sticking portion is attached to the first side surface, the second side sticking portion is attached to the second side surface, and the first bottom sticking portion and the second bottom sticking portion are both attached to the bottom surface.

4. A surface mountable battery cell according to claim 3, characterized in that: The first side surface and the second side surface are arranged opposite to each other on the housing.

5. A surface mountable battery cell according to claim 4, characterized in that: The first SMD pin and the second SMD pin are symmetrically arranged.

6. A surface mountable battery cell according to claim 2, characterized in that: A first channel penetrating to the accommodating cavity is provided at the first side surface, and a second channel penetrating to the accommodating cavity is provided at the second side surface; the first connecting portion is attached and connected to the first current collector, and one end of the first connecting portion is bent and passed through the first channel and connected to one end of the first side attaching portion; the second connecting portion is attached and connected to the second current collector, and one end of the second connecting portion is bent and passed through the second channel and connected to one end of the second side attaching portion.

7. A surface mountable battery cell according to claim 6, characterized in that: The shell comprises an upper shell and a lower shell. The upper shell is fixedly arranged on the lower shell. The accommodating cavity is formed between the upper shell and the lower shell. The first channel and the second channel are formed at the connection between the upper shell and the lower shell.

8. The surface mountable battery cell according to claim 2, characterized in that: After one end of the first side sticking portion is connected to the first connecting portion, it is bent at 90 degrees and arranged on the first side surface. After the first bottom sticking portion is connected to the other end of the first side sticking portion, it is bent at 90 degrees and arranged on the bottom surface.

9. The surface mountable battery cell according to claim 2, characterized in that: After one end of the second side sticking portion is connected to the second connecting portion, it is bent at 90 degrees and arranged on the second side surface. After the second bottom sticking portion is connected to the other end of the second side sticking portion, it is bent at 90 degrees and arranged on the bottom surface.

10. A surface-mountable battery cell according to any one of claims 1 to 9, characterized in that: The battery cell assembly is a lithium-ion battery cell.

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