Soft package battery cell protection structure

Abstract

The utility model relates to a soft package battery cell protection structure, which comprises a protection sleeve, a mounting frame body and an insertion block, the protection sleeve is provided with a tab groove, a mounting groove and sliding grooves are arranged in the mounting frame body, the mounting groove is arranged at the bottom of the inner side of the mounting frame body, the sliding grooves are arranged at two sides in the mounting frame body, and the insertion block is arranged in the mounting frame body. The sliding groove is formed in the mounting frame, one end of the sliding groove penetrates through the top of the mounting frame, an opening allowing the protective sleeve to pass through is formed in the top of the mounting frame, the protective sleeve is slidably mounted in the sliding groove, the protective sleeve is provided with at least two first inserting holes, and second inserting holes corresponding to the first inserting holes are formed in the mounting frame. The second insertion hole is communicated with the sliding groove, and the insertion block is detachably inserted into the first insertion hole and the second insertion hole. The protective sleeve is not prone to falling off in the using process, the tabs can be exposed out of the tab grooves through the sliding grooves and the inserting blocks in the two sides, the battery cell is protected, meanwhile, the testing requirement of the battery cell is met, damage to the tabs of the battery cell due to misoperation or other external factors in the testing process of the battery cell is effectively avoided, the protective effect is good, and the service life of the battery cell is prolonged. And the overall structure is simple, and disassembly, assembly and operation are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a soft-pack battery cell protection structure. Background Art

[0002] At present, battery cells are usually divided into three types: aluminum shell battery cells, cylindrical battery cells, and soft-pack battery cells. Generally, aluminum shell battery cells are used in mobile phone batteries, and the batteries of notebook computers adopt the series-parallel combination of cylindrical battery cells. Soft-pack battery cells are mostly used in digital products such as Bluetooth. Due to its advantages such as light weight, low mold opening cost, and high safety, the market share of soft-pack battery cells is gradually expanding.

[0003] In the prior art, since soft-pack battery cells do not have a shell protection like aluminum shell battery cells or cylindrical battery cells, and are restricted by their own materials and structures, during actual use, the external tabs are very easy to break due to the influence of the external environment, resulting in the battery cell being unable to be used normally. Generally, the connection between the tab and the battery cell package body receives the strongest force, and this is the position where fractures are most likely to occur. Therefore, currently, a protective sleeve is usually provided for the battery cell. The protective sleeve wraps the tabs of the battery cell to protect and buffer the tabs. However, when testing the battery cell (such as charge and discharge testing), the protective sleeve needs to be removed to expose the tabs so that the testing equipment can be connected to the tabs for testing. Therefore, it is impossible to perform relevant testing work on the battery cell while protecting the tabs. During the testing process, it is easy for the battery cell tabs to break due to improper operation by the staff or other external factors, and the protection ability is very limited. In addition, the existing protective sleeve is directly sleeved on the tab, and it is also easy to fall off during use, unable to ensure effective protection, and the reliability is poor. Summary of the Utility Model

[0004] In view of this, the utility model provides a soft-pack battery cell protection structure that is not easy to fall off, has a good protection effect, and can meet the testing needs of the battery cell while providing protection.

[0005] A soft-pack battery cell protection structure includes a protective sleeve, a mounting frame body, and a plug-in block. The protective sleeve is provided with tab slots. The mounting frame body is provided with a mounting groove and a sliding groove. The mounting groove is arranged at the bottom inside the mounting frame body, and the sliding groove is arranged on both sides inside the mounting frame body and penetrates through the top of the mounting frame body at one end. The top of the mounting frame body is provided with an opening for the protective sleeve to pass through. The protective sleeve is slidably installed in the sliding groove. The protective sleeve is provided with at least two first insertion holes, and the mounting frame body is provided with second insertion holes corresponding to the first insertion holes. The second insertion holes are communicated with the sliding groove, and the plug-in block is detachably inserted into the first insertion holes and the second insertion holes.

[0006] In the above technical solution, a protection structure for protecting a soft-pack battery cell is provided. The battery cell includes a package body and a tab vertically extending from the top of the package body. When installed, the bottom of the battery cell is installed in the installation groove of the installation frame, the protective sleeve is sleeved on the top of the battery cell, and the tab at the top of the battery cell is inserted into the tab groove, and the tab is covered through the tab groove to protect the tab of the battery cell. Sliding grooves are symmetrically arranged on both sides inside the installation frame, and the protective sleeve can slide up and down along the sliding grooves. A plurality of first jacks are provided on the protective sleeve, and corresponding second jacks are provided on the installation frame. By inserting the plugging block into the first jack and the second jack, the protective sleeve can be locked so that it cannot continue to slide along the sliding groove, effectively preventing the protective sleeve from falling off. Among them, the first jacks are distributed at intervals up and down, so that the height of the protective sleeve can be adjusted by inserting and pulling out the plugging block. When it is necessary to test or use the battery cell, the plugging block can be pulled out, and the protective sleeve can be slid down to expose the tab from the tab groove, and then the test equipment can be connected to the tab for testing without disassembling the protection structure outside the battery cell, which can meet the test requirements of the battery cell while protecting the battery cell. When the battery cell is not needed, the protective sleeve can be slid up to retract the tab into the tab groove to protect the battery cell from external factors. It is worth mentioning that usually when the battery cell is subjected to external force, the connection between the tab and the package body is subjected to the strongest force, and this is the position most likely to break. In this application, when the protective sleeve is slid down and the tab is exposed, the lower half of the tab groove can cover the connection between the tab and the package body, which can play a good protective role in this place and effectively avoid the occurrence of breakage. Moreover, since the protective sleeve itself is limited by the sliding grooves on both sides, and the package body of the battery cell is limited by the installation groove at the bottom, neither of them can rotate, and the stability is strong, thus eliminating the possibility of the connection between the tab and the package body being stressed or torqued, and avoiding breakage. When the tab is exposed for testing in this application, it can effectively avoid damage to the tab of the battery cell caused by improper operation or other external factors during the testing process of the battery cell, and the protection effect is good.

[0007] As an optional implementation manner, the protective sleeve includes a protection part and two sliding parts, and the two sliding parts are respectively arranged on both sides of the protection part.

[0008] In the above technical solution, the protective sleeve is composed of a protection part and two sliding parts vertically connected to both sides of the protection part. The sliding parts on both sides cooperate with the sliding grooves and are slidably arranged in the sliding grooves. Among them, the sliding parts can be made of materials with a relatively small coefficient of friction to ensure smooth sliding.

[0009] As an optional implementation manner, the tab groove is arranged on the protection part, the first jacks are arranged on the sliding parts, and each sliding part is provided with at least two first jacks, and the first jacks are distributed at intervals up and down.

[0010] In the above technical solution, the tab slot is formed in the protection part. The protection part can be made of a material with better elastic performance to enhance the buffering effect when subjected to external forces. The first jacks are distributed at intervals up and down on the sliding part to realize the height adjustment function of the protective sleeve.

[0011] As an alternative implementation, a fixing groove is formed at the other end of the protective sleeve away from the tab slot, and the fixing groove communicates with the tab slot.

[0012] In the above technical solution, a fixing groove is formed at the bottom of the protective sleeve, and the fixing groove communicates with the tab slot at the top of the protective sleeve. The size of the fixing groove matches the package of the battery cell. The top of the package of the battery cell is inserted into the fixing groove, and together with the installation groove at the bottom, the battery cell is fixed. At the same time, the tab slot fixes the tabs, which can effectively improve the stability and enhance the protection effect.

[0013] As an alternative implementation, soft pads are covered on the side walls of both the tab slot and the installation groove.

[0014] In the above technical solution, a layer of soft pad is laid on the inner side walls of the tab slot and the installation groove. The soft pad can provide a buffering effect to protect the structure of the battery cell. At the same time, when installing the battery cell, it makes it easier for the bottom of the package of the battery cell and the tabs to be inserted.

[0015] As an alternative implementation, the plugging block includes a limiting ring, and the limiting ring is provided at one end of the plugging block.

[0016] In the above technical solution, a limiting ring is provided at the end of the plugging block. The limiting ring is used to limit the plugging block to prevent it from falling out.

[0017] As an alternative implementation, the installation frame body is in a U-shaped structure, and heat dissipation windows are formed on both sides of the installation frame body.

[0018] In the above technical solution, the installation frame body is in an overall U-shaped structure. The open end of the U-shape is the end through which the protective sleeve enters and exits the installation frame body. Windows are symmetrically provided on both sides of the installation frame body to help the battery cell dissipate heat. When the battery cell is undergoing charge and discharge tests, the heat can be quickly dissipated, avoiding damage to the battery cell due to excessive temperature.

[0019] As an alternative implementation, a plurality of heat dissipation grooves are formed on both sides of the installation frame body. The plurality of heat dissipation grooves are distributed at intervals and penetrate through to the bottom of the sliding groove.

[0020] In the above technical solution, a plurality of heat dissipation grooves are provided on both sides of the installation frame body at intervals up and down. The bottom of the heat dissipation groove penetrates through to the bottom of the sliding groove and communicates with the bottom of the sliding groove. The heat dissipation grooves can accelerate the heat dissipation speed inside the installation frame body and avoid heat accumulation.

[0021] The present application has the following beneficial effects:

[0022] By providing insertion blocks, as well as mating first and second jacks, the protective cover of the present application can be locked, effectively preventing the protective cover from falling off. Moreover, the height of the protective cover can be adjusted through the sliding grooves on both sides and the insertion blocks. When it is necessary to test or use the battery cell, the tabs can be exposed from the tab grooves by adjusting the height of the protective cover, without the need to disassemble the protective structure outside the battery cell. While protecting the battery cell, the testing requirements of the battery cell are met, effectively avoiding damage to the battery cell tabs caused by improper operation or other external factors during the testing process, and having a good protection effect. In addition, the overall structure of the present application is simple, facilitating disassembly, assembly, and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 An exploded view of the soft-pack battery cell protection structure according to an embodiment.

[0025] Figure 2 A perspective view of the assembled soft-pack battery cell protection structure and the battery cell (when the tabs are not exposed).

[0026] Figure 3 For Figure 2 An enlarged view of position A in

[0027] Figure 4 A perspective view of the assembled soft-pack battery cell protection structure and the battery cell (when the tabs are exposed).

[0028] Figure 5 A bottom view of the protective cover.

[0029] Figure 6 For Figure 5 A cross-sectional view taken along the line A-A in

[0030] Figure 7 A top view of the mounting frame body.

[0031] Figure 8 For Figure 7 A cross-sectional view taken along the line B-B in

[0032] Explanation of the reference numerals in the drawings:

[0033] 1 - protective cover; 11 - protective part; 111 - tab groove; 12 - sliding part; 121 - first jack; 13 - fixing groove; 2 - mounting frame; 21 - mounting groove; 22 - sliding groove; 23 - second jack; 24 - window; 25 - heat dissipation groove; 3 - plug-in block; 31 - limiting ring; 4 - battery cell; 41 - tab; 42 - encapsulation body; 5 - soft pad. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0036] It should be noted that: like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] Please refer to Figures 1 to 8 , in a preferred embodiment of the present application, this embodiment provides a soft-pack battery cell protection structure, which includes a protective cover 1, a mounting frame 2 and a plug-in block 3. A tab groove 111 is formed on the protective cover 1. A mounting groove 21 and a sliding groove 22 are provided inside the mounting frame 2. The mounting groove 21 is provided at the bottom inside the mounting frame 2. The sliding groove 22 is provided on both sides inside the mounting frame 2 and one end penetrates through the top of the mounting frame 2. An opening for the protective cover 1 to pass through is provided at the top of the mounting frame 2. The protective cover 1 is slidably mounted in the sliding groove 22. The protective cover 1 is provided with at least two first jacks 121. The mounting frame 2 is provided with second jacks 23 corresponding to the first jacks 121. The second jacks 23 communicate with the sliding groove 22. The plug-in block 3 is detachably inserted into the first jacks 121 and the second jacks 23.

[0038] Among them, the battery cell 4 includes a package body 42 and electrode tabs 41 vertically extending from the top of the package body 42. When installing, the bottom of the battery cell 4 is installed in the installation groove 21 of the installation frame body 2, the protective sleeve 1 is sleeved on the top of the battery cell 4, and the electrode tabs 41 at the top of the battery cell 4 are inserted into the electrode tab grooves 111. The electrode tabs 41 are covered through the electrode tab grooves 111 to protect the electrode tabs 41 of the battery cell 4. On both sides inside the installation frame body 2, sliding grooves 22 are symmetrically arranged. The protective sleeve 1 can slide up and down along the sliding grooves 22. A plurality of first jacks 121 are provided on the protective sleeve 1, and corresponding second jacks 23 are provided on the installation frame body 2. By inserting the plug-in block 3 into the first jack 121 and the second jack 23, the protective sleeve 1 can be locked so that it cannot continue to slide along the sliding groove 22, effectively preventing the protective sleeve 1 from falling off. Among them, the first jacks 121 are distributed at intervals up and down. Thus, the height of the protective sleeve 1 can be adjusted by inserting and pulling out the plug-in block 3. When it is necessary to test or use the battery cell, the plug-in block 3 can be pulled out, and the protective sleeve 1 is slid down to expose the electrode tabs 41 from the electrode tab grooves 111. Then the test equipment can be connected to the electrode tabs 41 for testing without disassembling the protective structure outside the battery cell, which can meet the test requirements of the battery cell while protecting the battery cell. When the battery cell 4 is not needed, the protective sleeve 1 can be slid up to retract the electrode tabs 41 into the electrode tab grooves 111 to protect the battery cell from external factors. It is worth mentioning that usually when the battery cell is subjected to external force, the connection part between the electrode tab 41 and the package body 42 receives the strongest force, and this is the position most likely to break. In this application, when the protective sleeve 1 is slid down and the electrode tabs 41 are exposed, the lower half of the electrode tab groove 111 can cover the connection part between the electrode tab 41 and the package body 42, which can play a good protective role in this place and effectively avoid the occurrence of breakage. Moreover, since the protective sleeve 1 itself is limited by the sliding grooves 22 on both sides, and the package body 42 of the battery cell 4 is limited by the installation groove 21 at the bottom, neither of them can rotate, and the stability is strong. Thus, the possibility of the connection part between the electrode tab 41 and the package body 42 being stressed or torqued is eliminated, avoiding the occurrence of breakage. When the electrode tabs 41 are exposed for testing in this application, it can effectively avoid damage to the electrode tabs 41 of the battery cell 4 caused by improper operation or other external factors during the testing process of the battery cell, and the protection effect is good.

[0039] Please refer to Figures 1 to 5 , in this embodiment, the protective sleeve 1 is composed of a protection part 11 and two sliding parts 12 vertically connected to both sides of the protection part 11. The sliding parts 12 on both sides cooperate with the sliding grooves 22 and are slidably arranged in the sliding grooves 22. Among them, the width of the sliding part 12 is smaller than the width of the protection part 11, and the sliding part 12 is made of a material with a relatively small coefficient of friction to ensure smooth sliding.

[0040] Please refer to Figures 1 to 6, in this embodiment, there are two tab slots 111, corresponding to the two tabs 41 of the battery cell 4. The two tab slots 111 are opened at the top of the protection part 11. The first jacks 121 are arranged on the sliding part 12. Each sliding part 12 is provided with two first jacks 121, and the two first jacks 121 are distributed at intervals up and down to realize the height adjustment function of the protective sleeve 1. There are two second jacks 23, and the two second jacks 23 are respectively located on both sides of the mounting frame 2. Each second jack 23 corresponds to and is used with the two first jacks 121 on one sliding part 12. Among them, when the insertion block 3 is inserted into the lower first jack 121, the tab 41 is located inside the protective sleeve 1. When the insertion block 3 is inserted into the upper first jack 121, the tab 41 protrudes from the tab slot 111 of the protective sleeve 1.

[0041] In some embodiments, there are four second jacks 23, and each second jack 23 corresponds to each first jack 121. The numbers of the first jacks 121 and the second jacks 23 can be adjusted according to actual needs.

[0042] Please refer to Figure 5 and Figure 6 , in this embodiment, a fixing groove 13 is opened at the bottom of the protective sleeve 1. The fixing groove 13 communicates with the tab slot 111 at the top of the protective sleeve 1. The size of the fixing groove 13 is matched with the package 42 of the battery cell 4. The top of the package 42 of the battery cell 4 is inserted into the fixing groove 13, and together with the mounting groove 21 at the bottom, the battery cell 4 is fixed. At the same time, the tab slot 111 fixes the tab 41, which can effectively improve the stability and enhance the protection effect.

[0043] It should be noted that when the tab 41 protrudes, the end face of the tab slot 111 connected to the fixing groove 13 abuts against the top end face of the package 42 of the battery cell 4.

[0044] Please refer to Figure 3 and Figure 7 , in this embodiment, a layer of soft pad 5 is laid on the inner side walls of the tab slot 111 and the mounting groove 21. The soft pad 5 can provide a buffering effect to protect the structure of the battery cell. At the same time, when installing the battery cell 4, it makes it easier for the bottom of the package 42 of the battery cell 4 and the tab 41 to be inserted.

[0045] Please refer to Figures 1 to 4 , in this embodiment, a limit ring 31 is provided at the end of the insertion block 3. The limit ring 31 is used to limit the insertion block 3 to prevent the insertion block 3 from falling out.

[0046] Please refer to Figures 1 to 4, in this embodiment, the installation frame 2 as a whole has a U-shaped structure. The open end of the U-shape is the end through which the protective sleeve 1 enters and exits the installation frame 2. Windows 24 are symmetrically arranged on both sides of the installation frame 2 to help the battery cell 4 dissipate heat. When the battery cell is undergoing charge and discharge tests, the heat can be quickly dissipated, preventing the battery cell from being damaged due to excessive temperature.

[0047] Please refer to Figures 1 to 8 , in this embodiment, a plurality of heat dissipation grooves 25 are arranged on both sides of the installation frame 2 at intervals in the up and down direction. The bottom of the heat dissipation groove 25 penetrates to the bottom of the sliding groove 22 (as Figure 8 shown), and is connected to the bottom of the sliding groove 22. The heat dissipation grooves 25 can accelerate the heat dissipation speed inside the installation frame 2 and prevent heat from accumulating inside.

[0048] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

[0049] In the description of the present utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0050] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0051] In the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0052] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, improvements and variations are included within the spirit and scope of the appended claims.

Claims

1. A soft-pack battery protection structure, characterized in that: The invention comprises a protective cover, a mounting frame and a plug-in block, wherein the protective cover is provided with a pole ear groove, the mounting frame is provided with a mounting groove and a slide groove, the mounting groove is provided at the bottom of the inner side of the mounting frame, the slide groove is provided at both sides of the mounting frame, and one end passes through the top of the mounting frame, the top of the mounting frame is provided with an opening for the protective cover to pass through, the protective cover is slidably installed in the slide groove, the protective cover is provided with at least two first sockets, the mounting frame is provided with a second socket corresponding to the first socket, the second socket is connected with the slide groove, and the plug-in block is detachably plugged into the first socket and the second socket.

2. The soft-pack battery protection structure according to claim 1, characterized in that: The protective cover comprises a protective portion and two sliding portions, wherein the two sliding portions are respectively arranged on two sides of the protective portion.

3. The soft-pack battery protection structure according to claim 2, characterized in that: The pole ear groove is arranged on the protection part, the first plug hole is arranged on the sliding part, each sliding part is provided with at least two first plug holes, and the first plug holes are distributed at intervals up and down.

4. The soft-pack battery protection structure according to claim 1, characterized in that: A fixing groove is formed at the other end of the protective sleeve away from the pole lug groove, and the fixing groove is communicated with the pole lug groove.

5. The soft-pack battery protection structure according to claim 1, characterized in that: The side walls of the pole lug slot and the mounting slot are both covered with soft pads.

6. The soft-pack battery protection structure according to claim 1, characterized in that: The plug-in block comprises a limiting ring, and the limiting ring is arranged at one end of the plug-in block.

7. The soft-pack battery protection structure according to claim 1, characterized in that: The installation frame is a U-shaped structure, and heat dissipation windows are formed on both sides of the installation frame.

8. The soft-pack battery protection structure according to claim 1, characterized in that: A plurality of heat dissipation grooves are provided on both sides of the installation frame, and the plurality of heat dissipation grooves are distributed at intervals and penetrate to the groove bottom of the slide groove.

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