Battery

Abstract

The invention relates to the technical field of batteries, in particular to a battery which comprises a shell provided with a containing cavity and a glue opening, and the glue opening is located in the side face of the shell and communicates with the containing cavity; the battery cell group is arranged in the accommodating cavity; the glue injection pipeline is arranged on the outer side of the shell and corresponds to the glue opening, the glue injection pipeline is communicated with the containing cavity through the glue opening, and the glue injection pipeline is used for injecting glue so as to form a pouring sealant layer in the containing cavity and the glue pouring channel. The glue injection pipeline is arranged on the side face of the shell, after glue filling is completed, glue can be solidified in the glue injection pipeline to form natural sealing, no extra plugging piece is needed, the production process is simplified, and meanwhile the long-term and reliable sealing performance of the glue filling opening is guaranteed. The glue injection pipeline is arranged on the outer side of the shell, and during glue injection, glue injection equipment does not need to extend into the battery, so that the problem that the glue injection pipeline is directly inserted into the battery to possibly touch or puncture a battery cell is avoided, and the safety of the battery cell and the overall reliability of the battery in the production process are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery. BACKGROUND

[0002] With the continuous development of battery technology, batteries are applied to more and more products. In application scenarios such as power tools, batteries need to withstand frequent vibration, impact and other complex mechanical stress. In order to improve the mechanical reliability and structural stability of the battery pack, especially for the battery pack with soft-pack battery cells inside, the battery cells are usually fixed in the shell by pouring sealant, which plays the role of buffering, supporting, heat conduction and moisture-proof.

[0003] However, the existing battery usually opens a glue injection hole at the top of the battery shell when pouring glue, and needs to use a plugging member to seal the hole after the glue injection is completed. The plugging operation itself is difficult, and if the sealing is not strict, it may cause glue leakage or external contaminants to enter. Another way is to directly insert the glue injection pipe into the battery pack through the glue injection port for glue pouring, but the glue injection pipe is easy to touch or even stab the battery cell, causing safety problems of the battery cell. SUMMARY

[0004] The present application provides a battery to solve the problems of plugging difficulty, easy glue leakage and possible damage to the battery cell in glue pouring, thereby improving the overall reliability of the battery.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] On the one hand, the present application provides a battery, comprising:

[0007] a shell having a receiving cavity, the shell being provided with a glue port, the glue port being located on the side of the shell and communicating with the receiving cavity;

[0008] a battery cell group arranged in the receiving cavity;

[0009] a glue injection pipeline connected to the outside of the shell and corresponding to the glue port, the glue injection pipeline forming a glue pouring channel, the glue pouring channel communicating with the receiving cavity through the glue port, and the glue injection pipeline being used for injecting glue to form a glue pouring layer in the receiving cavity and the glue pouring channel.

[0010] As an optional embodiment, along the length direction of the battery, the glue port is located on the side wall of the shell, and the glue injection pipeline extends along the length direction of the battery.

[0011] As an optional embodiment, the shell has an end plate, a surrounding plate and three side plates, the end plate, the surrounding plate and the three side plates surrounding to form the receiving cavity, along the length direction of the battery, the size of the side plate is greater than the size of the surrounding plate, and the size of the surrounding plate is greater than or equal to the size of the glue pouring layer.

[0012] As an optional implementation, the glue hole is arranged on the side plate opposite to the surrounding plate.

[0013] As an optional implementation, the battery further comprises an adapter plate, the adapter plate is electrically connected with the battery cell group, and a connecting row is arranged on one side of the adapter plate in the length direction of the battery.

[0014] As an optional implementation, the battery further comprises a lead-out row and a partition plate, the lead-out row and the partition plate are arranged outside the shell respectively, and the connecting row passes through the partition plate and is connected with the lead-out row.

[0015] As an optional implementation, the partition plate is a mica sheet; and / or

[0016] The shell is provided with a protruding hole, the connecting row passes through the protruding hole, and a projection of the protruding hole is located in a projection range of the partition plate in the length direction of the battery; and / or

[0017] The protruding hole is provided with sealing glue; and / or

[0018] The battery further comprises a control plate, the control plate is electrically connected with the battery cell group through the lead-out row, the control plate is arranged outside the shell, and is arranged on the same side as the glue injection pipeline.

[0019] As an optional implementation, the adapter plate is arranged between the battery cell group and the shell in the length direction of the battery, is electrically connected with the battery cell group, and the connecting row is arranged on a side of the adapter plate away from the battery cell group to pass out of the shell.

[0020] As an optional implementation, the battery cell group comprises a plurality of battery cells, the plurality of battery cells are arranged in a stacked manner in the thickness direction of the battery, one side of the battery cell is provided with a tab in the length direction of the battery, the tab is electrically connected with the adapter plate, and the glue hole is located between the tabs in the projection in the width direction of the battery.

[0021] As an optional implementation, the glue hole is arranged on the same side as the tab and the adapter plate in the length direction of the battery; and / or

[0022] The potting glue layer covers the tab; and / or

[0023] The battery cell group further comprises a foam, the foam is arranged between the tabs of adjacent battery cells in the thickness direction of the battery to form a plurality of flow channels at one end of the battery cell group; and / or

[0024] The glue injection pipeline and the glue hole comprise a plurality of pipelines, a plurality of glue holes and a plurality of flow channels correspond to each other in the width direction of the battery; and / or

[0025] The glue injection pipeline and the lead-out row are located on the same side of the shell, and the glue injection pipeline and the lead-out row do not overlap in the projection in the width direction of the battery.

[0026] The battery provided in this application utilizes a dedicated glue injection channel on the side of the casing. After glue injection, the glue itself cures within the injection channel, forming a natural seal. This eliminates the need for additional sealing components or complex sealing operations, solving the problems of difficult sealing and easy glue leakage associated with traditional top-filling holes. This simplifies the production process and ensures long-term, reliable sealing of the glue injection port. Furthermore, the glue injection channel is located on the outside of the casing and connects to the receiving cavity via a side-mounted glue port. During glue injection, the glue flows into the receiving cavity through this channel and port. The glue injection equipment does not need to extend into the battery; it only needs to be inserted into the injection channel. This avoids the potential for contact or damage to the battery cell caused by direct insertion of the injection tube into the battery, improving cell safety and overall battery reliability during production. Moreover, the side-mounted glue injection channel and port design facilitates smoother and more uniform flow and filling of the glue within the receiving cavity, reducing air bubble formation and contributing to the formation of a complete and dense potting compound layer. This better secures the battery cell and provides functions such as stress buffering and heat conduction. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is one of the structural schematic diagrams of the battery provided in the embodiments of this application;

[0029] Figure 2 This is a second schematic diagram of the battery structure provided in the embodiments of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the battery removal control board provided in an embodiment of this application;

[0031] Figure 4 for Figure 3 The battery shown is a cross-sectional view with the exported row removed;

[0032] Figure 5 This is a partially exploded structural diagram of a battery provided in an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the battery casing provided in an embodiment of this application;

[0034] Figure 7 This is a schematic diagram of the battery cell assembly provided in an embodiment of this application;

[0035] Figure 8 for Figure 7Partial exploded structural schematic diagram of the battery cell group shown in the figure;

[0036] Figure 9 The water gel layer of the battery cell group shown in the figure is a structure schematic diagram; Figure 8 The water gel layer of the battery cell group shown in the figure is a structure schematic diagram;

[0037] Figure 10 The structure schematic diagram of the adapter plate of the battery provided by the embodiment of the present application is shown in the figure;

[0038] Figure 11 The exploded structural schematic diagram of the adapter plate and the lead-out row connection in the battery provided by the embodiment of the present application is shown in the figure;

[0039] Figure 12 The structure schematic diagram of the separator of the battery provided by the embodiment of the present application is shown in the figure;

[0040] Figure 13 The structure schematic diagram of the separator of the battery provided by the embodiment of the present application is shown in the figure.

[0041] Explanation of reference signs:

[0042] 100-battery; 10-housing; 11-receiving cavity; 12-gum port; 13-end plate; 14-enclosure; 15-side plate; 16-protruding hole; 17-sealing gum; 20-battery cell group; 21-battery cell; 22-tab; 221-positive tab; 222-negative tab; 24-water gel layer; 241-encapsulation area; 242-body area; 243-virtual sealing area; 25-cotton; 26-flow channel; 30-gum injection pipeline; 31-gum filling channel; 40-gum filling layer; 50-adapter plate; 51-connection row; 511-total positive; 512-total negative; 60-lead-out row; 61-connection hole; 70-separator; 71-penetrating hole; 72-back gum layer; 73-cut seam; 80-control board; 81-fuse. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0044] With the continuous development of battery technology, batteries are applied to more and more products. In application scenarios such as power tools, batteries need to withstand frequent vibration, impact and other complex mechanical stresses. In order to improve the mechanical reliability and structural stability of the battery pack, especially for the battery pack with soft-pack battery cells inside, the battery cells are usually fixed in the shell by potting glue, which plays the role of buffering, supporting, heat conduction and moisture-proof.

[0045] However, the existing battery usually opens a glue injection hole at the top of the battery shell when potting glue, and needs to seal the hole with a sealing member after the potting glue is completed. The sealing operation itself is difficult, and if the sealing is not strict, it may cause glue leakage or external contaminants to enter. Another way is to directly insert the glue injection pipe into the battery pack through the glue injection port for potting glue, but the glue injection pipe is easy to touch or even stab the battery cell, causing safety problems of the battery cell.

[0046] In order to overcome the defects in the prior art, after repeated thinking and verification, the inventor found that if the glue injection pipe is arranged on the side of the support, and the glue injection pipe is communicated with the side of the support through the glue port, the glue port is located below the side of the support, the glue injection pipe can make the battery pack pour upside down when potting glue, fill the head area of the battery cell group, and after the potting glue is completed, the natural sealing is formed in the glue injection pipe, which solves the sealing problem. At the same time, the arrangement of the glue injection pipe makes the glue injection pipe not need to be inserted into the battery, avoiding the problem of stabbing the battery cell.

[0047] Therefore, the present application provides a battery, comprising:

[0048] The shell has a receiving cavity, and the shell is provided with a glue port, the glue port is located on the side of the shell and communicated with the receiving cavity;

[0049] The battery cell group is arranged in the receiving cavity;

[0050] The glue injection pipe is connected to the outside of the shell and corresponds to the glue port, the glue injection pipe forms a glue injection channel, the glue injection channel is communicated with the receiving cavity through the glue port, and the glue injection pipe is used for injecting glue to form a potting glue layer in the receiving cavity and the glue injection channel.

[0051] By incorporating a dedicated injection channel on the side of the casing, the adhesive itself cures within the channel after injection, forming a natural seal. This eliminates the need for additional sealing components or complex sealing operations, solving the problems of difficult sealing and easy leakage associated with traditional top-mounted injection holes. This simplifies the production process and ensures long-term, reliable sealing of the injection port. Furthermore, the injection channel, located on the outside of the casing and connected to the receiving cavity via a side-mounted nozzle, allows the adhesive to flow into the cavity through this channel and nozzle during injection. The injection equipment does not need to penetrate the battery; only the injection channel is required. This avoids the risk of the injection tube directly touching or puncturing the battery cell, improving cell safety and overall battery reliability during production. The side-mounted injection channel and nozzle design also facilitates smoother and more uniform flow and filling of the adhesive within the receiving cavity, reducing air bubbles and contributing to the formation of a complete and dense potting layer. This better secures the battery cell and provides stress buffering and heat conduction functions.

[0052] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0053] The specific structure of the battery and various possible implementation methods are described in detail below.

[0054] Figure 1 This is one of the structural schematic diagrams of the battery provided in the embodiments of this application. Figure 2 This is a second schematic diagram of the battery structure provided in an embodiment of this application. Figure 3 This is a schematic diagram of the battery removal control board provided in an embodiment of this application. Figure 4 for Figure 3 The image shows a cross-sectional view of the battery with the exported row removed. Figure 5 This is a partial exploded structural diagram of the battery provided in an embodiment of this application. Figure 6 This is a schematic diagram of the battery casing provided in an embodiment of this application. Figure 7 This is a schematic diagram of the battery cell assembly provided in an embodiment of this application. Figure 8 for Figure 7 The diagram shows a partial exploded view of the battery cell assembly. Figure 9 for Figure 8 A schematic diagram of the hydrogel layer structure of the battery cell assembly shown. Figure 10 This is a schematic diagram of the structure of the battery adapter plate provided in an embodiment of this application. Figure 11 This is an exploded structural diagram of the connection between the adapter plate and the outlet in the battery provided in an embodiment of this application. Figure 12 This is one of the structural schematic diagrams of the separator of the battery provided in the embodiments of this application. Figure 13 This is a second schematic diagram of the structure of the separator of the battery provided in the embodiments of this application.

[0055] As shown in Figure 1 The battery 100 provided by the embodiments of the present application is used in an electric device.

[0056] As shown in Figure 2 and Figure 6 The battery 100 comprises a shell 10, a cell group 20 and a glue injection pipeline 30. The shell 10 has a receiving cavity 11. The cell group 20 is arranged in the receiving cavity 11.

[0057] As shown in Figure 3 The shell 10 is provided with a glue port 12. The glue port 12 is located on the side of the shell 10 and communicates with the receiving cavity 11. The glue injection pipeline 30 is connected to the outside of the shell 10 and corresponds to the glue port 12.

[0058] The battery 100 has a length direction, a thickness direction and a width direction.

[0059] The length direction of the battery 100 is the first direction x, and is also the length direction of the cell group 20 in the battery 100. The thickness direction of the battery 100 is the second direction y, and is also the thickness direction of the cell group 20 in the battery 100. The width direction of the battery is the third direction z, and is also the width direction of the cell group 20 in the battery 100.

[0060] Along the length direction of the battery 100, the glue port 12 is arranged on the side wall of the battery 100.

[0061] As shown in Figure 4 The glue injection pipeline 30 is formed with a glue injection channel 31. The glue injection channel 31 communicates with the receiving cavity 11 through the glue port 12, and the glue injection pipeline 30 is used to inject glue to form a glue sealing layer 40 in the receiving cavity 11 and the glue injection channel 31.

[0062] By setting a dedicated glue injection pipeline 30 on the side of the shell 10, the battery 100 is inverted during glue injection, and the head area of the battery cell group 20 is filled with glue. After the glue injection is completed, the glue itself will solidify in the glue injection pipeline 30, i.e. the glue injection channel 31, to form a naturally sealed glue filling layer 40, without the need for additional blocking parts or complex blocking operations, solving the problem of large blocking difficulty and easy glue leakage of the traditional top glue injection hole, simplifying the production process, while ensuring the long-term and reliable sealing of the glue injection port 12. At the same time, the glue injection pipeline 30 is arranged on the outside of the shell 10 and communicates with the containing cavity 11 through the side glue port 12. During glue injection, the glue flows into the containing cavity 11 through the glue injection pipeline 30 and the glue port 12. The glue injection equipment does not need to be inserted into the battery 100, but only needs to be inserted into the glue injection pipeline 30, avoiding the problem of touching or injuring the battery cell 21 due to the direct insertion of the glue injection pipeline into the containing cavity 11, improving the safety of the battery cell 21 and the overall reliability of the battery 100 during production. Moreover, the design of the laterally arranged glue injection pipeline 30 and glue port 12 is beneficial to the more stable and uniform flow and filling of the glue in the containing cavity 11, which can reduce the generation of air bubbles and help form a complete and dense glue filling layer 40, thereby better fixing the battery cell 21 and achieving stress buffering and heat conduction functions.

[0063] As an optional embodiment, along the length direction of the battery 100, the height of the glue filling layer 40 in the glue injection channel 31 is consistent with the height of the glue filling layer 40 in the containing cavity 11.

[0064] As an optional embodiment, the height of the glue filling layer 40 exceeds the top area of the battery cell group 20 by 0-3mm, so that the glue wraps around the tab and effectively supports the head of the battery cell group 20 to prevent the tab from breaking in mechanical working conditions.

[0065] As an optional embodiment, the glue port 12 is multiple, which can be one, two, three or other quantities. The glue injection pipeline 30 is correspondingly provided with multiple.

[0066] As an optional embodiment, the glue injected into the glue injection pipeline 30 is composed of two components, i.e. components A and B. After the A glue and B glue are fully mixed in a specific ratio, they will undergo a chemical reaction, changing from a liquid state to a solid state, thereby providing mechanical reliability protection for the battery 100.

[0067] As an optional embodiment, the glue injection pipeline 30 is integrally formed on the shell 10.

[0068] The glue injection pipeline 30 is directly molded as a part of the shell 10, eliminating the interface gap that may be caused by assembly, welding or bonding, preventing leakage at the connection during or after the glue injection process, and ensuring long-term and complete sealing of the battery 100. At the same time, the integrated design makes the glue injection pipeline 30 and the shell 10 wall form a continuous and uniform solid structure without any mechanical connection weak points, enhancing the mechanical strength, impact resistance and pressure resistance of the glue injection pipeline 30 and its connection with the shell 10, enabling it to withstand higher glue injection pressure and internal stress changes during use of the battery 100, and improving the overall structural reliability of the product.

[0069] As an optional embodiment, the shell 10 is an injection molded part, and the material of the shell 10 can be selected from PC, ABS, PC+ABS, PA+GF, etc. plastic materials for injection molding.

[0070] As an optional embodiment, along the length direction of the battery 100, the glue port 12 is located on one side of the shell 10. The glue injection pipeline 30 extends along the length direction of the battery 100. One end of the glue injection pipeline 30 communicates with the glue port 12.

[0071] The glue port 12 penetrates into the bottom of the shell 10, so that the needle of the glue injection equipment can penetrate into one end of the glue injection pipeline 30, and the glue is injected from the bottom of the shell 10, and flows smoothly upward along the length direction. The air in the accommodating cavity 11 is naturally gathered upward and finally discharged under the push of the glue. This orderly and gradual filling method avoids turbulence or air wrapping of the glue in the accommodating cavity 11, eliminates the glue injection cavity caused by poor exhaust, and ensures the density and integrity of the glue sealing layer 40.

[0072] In addition, the glue injection path from bottom to top makes the glue in the accommodating cavity 11 present a stable laminar flow state, which is beneficial to the uniform distribution of the glue and avoids local accumulation or insufficient filling. The covering uniformity and structural consistency of the glue sealing layer 40 in the battery 100 are improved, thereby enhancing the mechanical support and heat dissipation performance of the battery 100 as a whole. At the same time, this directional glue injection method does not need complex vacuum pumping or multiple glue filling processes, but only relies on gravity and the flowability of the glue to achieve high-quality glue sealing, simplifying the production process, reducing the dependence on equipment and operation, and improving the stability of the glue injection process and product yield.

[0073] As an optional embodiment, along the length direction of the battery 100, the size of the glue injection pipeline 30 is the same as the opening size of the glue port 12.

[0074] The cross-sectional dimension of the glue injection channel 30 is consistent with the glue port 12, so that after the glue is injected, the glue can directly enter and fill the entire glue injection channel 30 without cross-sectional mutation and flow disturbance, ensuring that the glue enters the accommodating cavity 11 of the battery 100 in a stable and continuous laminar flow state, thereby improving the stability and filling quality of the glue filling process. At the same time, the glue port 12 and the glue injection channel 30 have the same size, which means that the corresponding core and flow channel structure in the shell 10 injection molding mold can be designed uniformly, without the need to set different size tolerances and draft angles for the two, thereby simplifying the complexity of the mold, improving the processing efficiency and service life of the mold, and reducing the manufacturing cost and process control difficulty of the shell 10.

[0075] In addition, since the glue injection channel 30 is consistent in size with the glue port 12, after the glue filling is completed, the glue solidified in the glue injection channel 30 will form a whole sealing structure that completely fits the inner wall of the glue injection channel 30 and the edge of the glue port 12. This gapless filling avoids the micro-cracks or weak sealing points that may be caused by size mismatch, thereby ensuring the long-term and reliable sealing performance of the glue filling port and preventing glue leakage or external contaminants from entering.

[0076] As an optional embodiment, the shell 10 has an end plate 13, a surrounding plate 14, and three side plates 15. The end plate 13, the surrounding plate 14, and the three side plates 15 surround to form the accommodating cavity 11. In the length direction of the battery 100, the size of the side plate 15 is greater than the size of the surrounding plate 14, and the size of the surrounding plate 14 is greater than or equal to the size of the glue filling layer 40. The main function of the surrounding plate 14 is to prevent glue overflow during glue filling.

[0077] The height of the side plate 15 is greater than that of the surrounding plate 14, forming an observation area above the surrounding plate 14. The operator can directly visually observe the rising height and flow state of the glue in the accommodating cavity 11 from multiple angles without the need for sensors or process interruption, thereby realizing real-time and accurate judgment of the glue filling progress and whether the glue filling layer 40 reaches the preset height, greatly improving the process controllability and consistency.

[0078] At the same time, the surrounding plate 14 below the side plate 15 also forms a natural opening for easy exhaust during glue injection.

[0079] As an optional embodiment, the size of the surrounding plate 14 is slightly larger than the size of the glue filling layer 40.

[0080] As an optional embodiment, the size of the surrounding plate 14 is 4-9 mm, and the size of the surrounding plate 14 is greater than the size of the glue filling layer 40 by 1-5 mm.

[0081] As an optional embodiment, the glue port 12 is arranged on the side plate 15 opposite to the surrounding plate 14.

[0082] The glue hole 12 is directly arranged on the side plate 15 opposite to the surrounding plate 14, so that the glue injection pipe 30 is directly communicated with the lateral space of the battery 100 accommodating cavity 11, and the space above the surrounding plate 14 is convenient for exhaust. After the glue is injected from the side, the glue can flow along the shortest and most direct injection path, without turning or long distance flowing, so that the core area can be quickly filled, the glue injection efficiency is improved, and the problems of glue performance change or local solidification caused by too long glue injection time are reduced.

[0083] As shown in Figure 5 As an optional embodiment, the battery further comprises a conversion plate 50. The conversion plate 50 is electrically connected with the cell group 20. Along the length direction of the battery 100, one side of the conversion plate 50 is electrically connected with a connection row 51. The connection row 51 penetrates out of the shell 10.

[0084] As an optional embodiment, the connection row 51 comprises a total positive 511 and a total negative 512. The total positive 511 and the total negative 512 are respectively electrically connected with the cell group 20 through the conversion plate 50. The total positive 511 and the total negative 512 penetrate out of the shell 10. The total positive 511 and the total negative 512 are concentrated and led out from one side of the shell 10, and the sealing requirements of multiple output terminals are integrated in a limited local area. Compared with the scheme of dispersed electrode arrangement or multi-directional leading out from the top / end, the number and complexity of sealing points of the output terminals are reduced, the glue sealing is easier to implement, monitor and ensure the sealing quality, and the risk of leakage, insulation failure or contamination caused by poor sealing is reduced.

[0085] Meanwhile, the electrode connecting member, such as the leading-out row 60, can be arranged on one side of the cell group 20 along the length direction of the battery 100, avoiding occupying the valuable vertical or end space at both ends of the battery 100. This makes the internal space of the battery 100 more efficiently used for cell 21 arrangement, and is beneficial to realize the compactness and regularity design of the overall shape of the battery 100.

[0086] As an optional embodiment, the total positive 511 and the total negative 512 are both copper rows.

[0087] As shown in Figure 11 As an optional embodiment, the battery 100 further comprises a leading-out row 60 and a partition plate 70. The leading-out row 60 and the partition plate 70 are respectively arranged outside the shell 10. The connection row 51 penetrates through the partition plate 70 and is connected with the leading-out row 60.

[0088] As an optional embodiment, the total positive 511 and the total negative 512 are respectively connected with the corresponding leading-out row 60 through the partition plate 70.

[0089] The partition plate 70 is arranged between the shell 10 and the lead-out row 60 as an independent physical barrier. In the glue filling process, even if a small amount of glue leaks from the positions where the total positive 511 and the total negative 512 pass through the shell 10, the partition plate 70 can effectively block the glue from leaking into or contaminating the external lead-out row 60 and the electrical connection area, thereby ensuring the long-term reliability of the battery 100 output end.

[0090] As an optional embodiment, the lead-out row 60 is a copper row.

[0091] As an optional embodiment, the ends of the total positive 511 and the total negative 512 are tin soldered to the lead-out row 60 to form an electrical connection.

[0092] As an optional embodiment, the partition plate 70 is a mica sheet.

[0093] When a high-temperature-resistant and excellent insulating material such as mica is used as the partition plate 70, it can play a protective role in the subsequent lead-out row 60 welding process. The mica partition plate 70 can effectively block the high temperature and spatter generated during welding, preventing it from scalding or eroding the shell 10 below, especially the plastic material glue frame, thereby protecting the integrity and sealing of the shell 10 structure and prolonging the service life of the battery 100. At the same time, the partition plate 70 itself has insulation performance, forming an additional insulating bushing or isolation layer at the positions where the total positive 511 and the total negative 512 pass through, further enhancing the creepage distance and electrical isolation strength between the electrode and the shell 10, reducing the risk of short circuit, and improving the safety of the battery 100 under high pressure, high humidity, or complex working conditions.

[0094] As an optional embodiment, the shell 10 is provided with an extension hole 16. The connection row 51 passes through the extension hole 16. In the length direction of the battery 100, the projection of the extension hole 16 is located within the projection range of the partition plate 70. That is, the area of the partition plate 70 is greater than the area of the extension connection row 51, thereby improving the insulation performance.

[0095] As an optional embodiment, the total positive 511 and the total negative 512 pass through the corresponding extension hole 16, respectively.

[0096] As an optional embodiment, the extension hole 16 is provided with a sealing glue 17 to prevent the filling glue from leaking from the extension hole 16.

[0097] The annular gap between the total positive 511, the total negative 512, and the inner wall of the extension hole 16 is filled with special sealing glue 17. Before the filling glue operation, the extension hole 16 that may leak is pre-blocked, and in combination with the subsequent overall filling, a double-sealing system is formed, thereby ensuring that the battery is absolutely leak-free at the key interface.

[0098] ​The sealant 17 not only serves a sealing function, but also possesses excellent insulation properties. When filled into the protruding hole 16, it forms a continuous and dense insulating layer between the positive 511, the negative 512 and the casing 10 (if it is a metal casing) or between the battery and the external environment. This effectively increases the creepage distance, prevents short circuits between electrodes or to the casing, and isolates the battery from the intrusion of external moisture, dust, and other contaminants, thus improving the long-term reliability of the battery 100 in harsh environments.

[0099] Furthermore, the sealant 17 typically possesses appropriate elasticity. After curing, it wraps around the positive 511 and negative 512, absorbing and buffering vibrations, impacts, or thermal expansion and contraction stresses generated during the use or transportation of the battery 100. This prevents these stresses from acting directly on the rigidly protruding positive 511 and negative 512, reducing the problem of fatigue fracture due to stress concentration in the positive 511 and negative 512, and extending the service life of the electrical connection.

[0100] As an optional implementation, a connection hole 61 is provided on the outlet 60. The positive 511 and the negative 512 pass through the partition 70 and are located in the connection hole 61, and are provided for welding to connect with the outlet 60.

[0101] Connecting hole 61 provides a precise positioning reference and mechanical constraint for positive 511 and negative 512. After the positive 511 and negative 512 are inserted into connecting hole 61, preliminary alignment and anti-displacement fixation are achieved before welding, ensuring the high stability of their relative positions during welding. After welding, the molten metal forms a comprehensive encapsulation and interlocking structure within the hole, giving the electrical connection point excellent tensile, shear, and vibration fatigue resistance, greatly improving long-term reliability.

[0102] like Figure 12 and Figure 13 As shown, the partition plate 70 is provided with a through hole 71. The positive 511 and the negative 512 pass through the housing 10 and then through the through hole 71, and are welded to the outlet 60.

[0103] As an optional implementation, the partition 70 is provided with an adhesive backing layer 72. The adhesive backing layer 72 is provided on the side of the partition 70 near the housing 10. The adhesive backing layer 72 is used to fix the partition 70 to the housing 10.

[0104] As an optional implementation, the adhesive backing layer 72 is provided with a slit 73. The slit 73 corresponds to the through hole 71. After the positive 511 and negative 512 exit the housing 10, they pass through the slit 73 and the through hole 71 in sequence. The slit 73 forms a smaller gap after passing through the positive 511 or negative 512, thereby improving the sealing effect.

[0105] As an alternative implementation, the slit 73 is obtained by making a small slit or cutting.

[0106] As shown in Figure 10 an optional embodiment, along the length direction of the battery 100, the adapter plate 50 is arranged between the cell group 20 and the shell 10 and is electrically connected with the cell group 20. The connecting row 51 is arranged on the side of the adapter plate 50 away from the cell group 20 to pass through the shell 10.

[0107] As an optional embodiment, the total positive 511 and the total negative 512 are respectively arranged on the side of the adapter plate 50 away from the cell group 20 to respectively pass through the shell 10.

[0108] As an optional embodiment, the total positive 511 and the total negative 512 are respectively arranged on the adapter plate 50 through copper strip patches, and the ends are bent, so that they can pass through the shell 10.

[0109] The adapter plate 50 is a special electrical adapter module between the cell group 20 and the external circuit, which integrates and converts the complex multi-tab connection of the cell group 20 into the standardized total positive 511 and total negative 512 output terminals, so as to realize the centralization, standardization and modularization of the electrode interface, greatly simplify the electrical layout inside the battery 100 package, and reduce the connection complexity and assembly error. The adapter plate 50 is arranged between the cell group 20 and the shell 10 along the length direction of the battery 100, and fully utilizes the structural space at the end of the cell group 20. The plate body of the adapter plate 50 can play the role of auxiliary support and reinforcing rib, enhancing the overall structural rigidity of the battery 100 package in the length direction, while avoiding the occupation of valuable space on the top or side of the battery 100 for setting output terminals.

[0110] At the same time, the connection between all the cells 21 and the output poles is completed on the adapter plate 50, so that the assembly of the cell group 20 and the welding connection of the output terminals can be carried out as two independent sub-processes, improving the operation efficiency and flexibility of the production line, and also facilitating the independent disassembly and replacement of the cell group 20 or the output interface during maintenance or detection, improving the manufacturability and maintainability of the product.

[0111] As an optional embodiment, the battery 100 further includes a control board 80. The control board 80 is electrically connected with the cell group 20 through the lead-out row 60.

[0112] As an optional embodiment, the control board 80 is arranged on the outside of the shell 10 and is arranged on the same side as the glue injection pipeline 30.

[0113] As an optional embodiment, a fuse 81 is further arranged between the lead-out row 60 and the control board 80.

[0114] As an optional embodiment, the positive pole in the lead-out row 60 and the control board 80 are welded with the fuse 81.

[0115] As an optional implementation, the control board 80 is a BMS board.

[0116] As an optional implementation, the glue injection pipeline 30 and the lead-out row 60 are located on the same side of the shell 10, and the projections of the glue injection pipeline 30 and the lead-out row 60 along the width direction of the battery 100 do not overlap, that is, the glue injection pipeline 30 and the lead-out row 60 are staggered on the same side.

[0117] As shown in Figure 7 As an optional implementation, the cell group 20 includes a plurality of cells 21. The plurality of cells 21 are stacked along the thickness direction of the battery 100. Along the length direction of the battery 100, one side of the cell 21 is provided with a tab 22. The tab 22 is electrically connected with the adapter board 50, and the glue port 12 is located between the tabs 22 along the projection of the width direction of the battery 100.

[0118] As an optional implementation, the tab 22 includes a positive tab 221 and a negative tab 222. Along the width direction of the battery 100, the glue port 12 is located between the positive tab 221 and the negative tab 222.

[0119] As an optional implementation, the tabs 22 of the plurality of cells 21 are electrically connected in series / parallel on the adapter board 50.

[0120] The glue port 12 directly faces the unobstructed area between the positive tab 221 and the negative tab 222, so that the injected glue can directly flow to the gap or the empty cavity area between the cells 21, without directly impacting the dense tab bundle, effectively preventing the glue from being congested, splashed or flowing around the tab, ensuring that the glue can quickly fill the entire containing cavity 11 in a stable and continuous laminar flow state, and significantly improving the glue filling efficiency and one-time filling success rate.

[0121] At the same time, the tab is a key current lead-out component of the cell 21, and its form and position are crucial to the welding quality and electrical performance. By avoiding the tab area for glue injection, the problem of physical impact, displacement or deformation of the tab caused by high-pressure glue flow is eliminated, the original state and mechanical strength of the connection between the tab and the bus bar are guaranteed, and the long-term reliability and stability of the electrical connection inside the battery 100 are maintained.

[0122] As an optional implementation, along the length direction of the battery 100, the glue port 12 is located on the same side as the tab 22 and the adapter board 50, so as to facilitate the fixation of the tab 22 and the adapter board 50 by the potting glue layer 40.

[0123] As an optional implementation, the potting glue layer 40 covers the tab 22. By covering the tab 22 with the potting glue layer 40, the tab 22 is sealed in the potting glue layer 40.

[0124] As an optional implementation, the cell group 20 further comprises a foam 25. Along the thickness direction of the battery 100, part of the foam 25 is arranged between the tabs of adjacent cells 21, thereby forming a plurality of flow channels 26 at one end of the cell group 20. The glue port 12 corresponds to the flow channel 26, thereby facilitating the glue filling operation. The glue filling layer can also be supported at multiple locations, thereby improving the mechanical reliability of the battery 100.

[0125] The foam 25 forms a structured flow channel 26 between the tabs, which provides a clear, low-resistance and direct flow path for the glue to the gap between the cells 21. After the glue is injected from the glue port 12, it can directly enter and fill these flow channels 26, and then quickly and uniformly spread to the entire interior of the cell group 20 along the flow channels 26, effectively avoiding disordered flow, stagnation or filling blind spots of the glue in the tab cluster, and significantly improving the glue filling speed and filling integrity.

[0126] At the same time, the foam 25 arranged between the tabs can physically isolate, buffer and support the tabs before and during glue filling, preventing the tabs from bending, adhering or displacing due to glue flow impact, ensuring the stability of the tab spacing and relative position, thereby ensuring the precision and quality of subsequent welding with the busbar and maintaining the reliability of electrical connection.

[0127] As an optional implementation, the glue injection pipe 30 and the glue port 12 comprise a plurality of. Along the width direction of the battery 100, the plurality of glue injection pipes 30, the plurality of glue ports 12 and the plurality of flow channels 26 correspond to each other, that is, one glue injection pipe 30 communicates with one flow channel 26 through one glue port 12, thereby facilitating the injection of glue into multiple flow channels 26 through multiple glue injection pipes 30 and multiple glue ports 12 at the same time, facilitating the flow of glue, and thereby forming a bubble-free and dense glue filling layer 40.

[0128] As an optional implementation, the foam 25 is also arranged outside the stacked cells 21. Specifically, one or more foams are arranged on both sides in the thickness direction of the battery 100 and on both sides in the width direction of the battery 100, thereby improving the structural stability.

[0129] As an optional implementation, the glue port 12 is provided with one, and the glue port 12 corresponds to the flow channel 26 between the positive tab 221 and the negative tab 222.

[0130] As an optional implementation, the glue port 12 is provided with two or three, one of which corresponds to the flow channel 26 between the positive tab 221 and the negative tab 222; the other one or two glue ports 12 correspond to the flow channel 26 between the positive tab 221 or the negative tab 222 and the shell.

[0131] As an optional implementation, the glue port 12 is provided with one, and the glue port 12 corresponds to the flow channel 26 between the positive tab 221 and the negative tab 222. Figure 8 As an optional implementation, the glue port 12 is provided with two or three, one of which corresponds to the flow channel 26 between the positive tab 221 and the negative tab 222; the other one or two glue ports 12 correspond to the flow channel 26 between the positive tab 221 or the negative tab 222 and the shell. Figure 9As an optional embodiment, the battery cell group 20 also includes a hydrogel layer 24, as shown. The hydrogel layer 24 is arranged between two adjacent battery cells 21 along the thickness direction of the battery 100.

[0132] The hydrogel layer 24 has excellent heat conduction and heat storage performance, can quickly absorb the heat generated by the battery cells 21 during charging and discharging, and uniformly diffuse the heat between the battery cells 21 through the phase change or conduction of the internal water, effectively reducing the overall working temperature of the battery cell group 20, greatly reducing the local temperature difference between the battery cells 21, avoiding the formation of hot spots, thereby delaying the aging rate of the battery cells 21 and significantly improving the cycle life of the battery 100.

[0133] Meanwhile, as a soft and viscoelastic interface material, the hydrogel layer 24 can tightly fill the micro gaps between the battery cells 21, achieve good contact on the entire surface, optimize the heat transfer efficiency between the battery cells 21, and also provide effective buffering and stress dispersion when the battery 100 is subjected to vibration or impact, reducing the performance degradation or damage risk of the battery cells 21 caused by mechanical deformation, and ensuring the structural stability of the battery cell group 20 under dynamic working conditions.

[0134] As an optional embodiment, the hydrogel layer 24 is of an integrated structure, and the hydrogel layer 24 is Z-shaped and coiled between the battery cells 21. The hydrogel layer 24 includes a packaging area 241, a plurality of body areas 242, and a virtual sealing area 243. The packaging area 241 is the outer side of the hydrogel layer 24 and is used to seal the hydrogel. The body area 242 is the setting area of the hydrogel and is used to contact the large surface of the battery cell 21. The virtual sealing area 243 is located between adjacent body areas 242. The virtual sealing area 243 is the bending area of the hydrogel layer 24, which facilitates the coiling of the hydrogel layer 24.

[0135] The Z-shaped coiled structure of the integrated hydrogel layer 24 can cover all the contact interfaces of the adjacent battery cells 21 in a continuous and uninterrupted manner, ensuring the omission-free distribution of the thermal management medium. The edge sealing and leakage prevention are achieved by the packaging area 241, the maximum contact with the large surface of the battery cell 21 is ensured by the body area 242 to optimize heat exchange, and the flexible bending space is provided by the virtual sealing area 243 to adapt to the stacking, which simplifies the structure and accurately meets the different needs of sealing, heat conduction, and assembly.

[0136] As an optional embodiment, the hydrogel layer 24 is packaged with an aluminum plastic film, which is a composite material of three materials. The outermost layer is a nylon layer, the middle layer is an aluminum layer, and the inner layer is a PP layer. The body area 242 inside is made of a hydrogel matrix and a skeleton. Most of the hydrogel is water, which is non-flowing water in the hydrogel matrix. The skeleton is a support and isolation structure, which is a textile or plastic structure, a foam structure.

[0137] Water will absorb a large amount of heat when vaporizing, and the aluminum plastic film package will be expanded at the same time, and the water vapor will escape to the external environment. This feature can be used to rapidly cool the battery under high temperature.

[0138] The outermost edge of the hydrogel layer 24 is bonded together by hot melting to form the encapsulation area 241. The virtual encapsulation area 243 is physically contacted by the two aluminum plastic films before the hydrogel is poured in, but it is not hot melted. After the hydrogel is poured and solidified into a gel, the bulk area 242 is formed. The virtual encapsulation area 243 is physically contacted by the two aluminum plastic films, so the thickness of this position is relatively thin.

[0139] The virtual encapsulation area 243 can be used as a size absorption setting. The expansion size of the battery cell 21 compresses the bulk area 242, and the hydrogel in the bulk area 242 is squeezed to the virtual encapsulation area 243 of the hydrogel layer 24, realizing the size absorption of the battery cell 21 life cycle expansion, and the hydrogel layer 24 realizes the ability of the battery cell 21 expansion size absorption.

[0140] As an optional embodiment, the phase change vaporization phase change temperature of the hydrogel is set to 100℃-135℃.

[0141] The battery 100 provided by the embodiment of the application includes a shell 10, a battery cell group 20, and a glue injection pipeline 30. The shell 10 has a containing cavity 11. The shell 10 is provided with a glue port 12. The glue port 12 is located on the side surface of the shell 10 and communicates with the containing cavity 11. The battery cell group 20 is arranged in the containing cavity 11. The glue injection pipeline 30 is connected to the outside of the shell 10 and corresponds to the glue port 12. The glue injection pipeline 30 is formed with a glue pouring channel 31, and the glue pouring channel 31 communicates with the containing cavity 11 through the glue port 12. The glue injection pipeline 30 is used for injecting glue to form a glue pouring and encapsulation layer 40 in the containing cavity 11 and the glue pouring channel 31.

[0142] By arranging the dedicated glue injection pipeline 30 on the side of the shell 10, after the glue injection is completed, the glue itself will solidify in the glue injection pipeline 30 to form a natural seal, without the need for additional blocking parts or complex blocking operations, solving the problem of large blocking difficulty and easy glue leakage of the traditional top glue injection hole, simplifying the production process, and at the same time ensuring the long-term and reliable sealing of the glue injection port 12. At the same time, the glue injection pipeline 30 is arranged on the outside of the shell 10 and communicates with the containing cavity 11 through the side glue port 12. During glue injection, the glue flows into the containing cavity 11 through the glue injection pipeline 30 and the glue port 12, and the glue injection equipment does not need to be inserted into the inside of the battery 100, but only needs to be inserted into the glue injection pipeline 30, avoiding the problem of possibly touching or pricking the battery cell 21 due to the direct insertion of the glue injection pipeline into the inside of the battery 100, and improving the safety of the battery cell 21 and the overall reliability of the battery 100 during the production process. Moreover, the design of the laterally arranged glue injection pipeline 30 and glue port 12 is beneficial to the more stable and uniform flow and filling of the glue in the containing cavity 11, which can reduce the generation of air bubbles and help to form a complete and dense glue injection layer 40, thereby better fixing the battery cell 21 and achieving stress buffering and heat conduction functions.

[0143] The application also provides a battery 100 as described above.

[0144] Since the battery 100 described in the embodiments includes the battery 100 described in any of the above embodiments, the battery 100 has the structure and advantages, and the embodiments will not be described again.

[0145] Among them, the power tool includes a power screwdriver, a power punch, a power massager, etc., and the technology may be applied to other electronic devices in the future.

[0146] It should be noted that the "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like mentioned in the specification can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in connection with an embodiment, it is within the knowledge of those skilled in the art to realize such features, structures or characteristics in connection with other embodiments described explicitly or implicitly.

[0147] Generally, the terms should be understood at least partially by the use in the context. For example, at least partially according to the context, the term "one or more" used in the text can be used to describe any feature, structure or characteristic of singular meaning, or can be used to describe a combination of features, structures or characteristics of plural meaning. Similarly, at least partially according to the context, terms such as "a" can be understood to convey singular usage or convey plural usage.

[0148] It should be readily understood that "on," "over," and "above" in the present application are to be interpreted in the broadest context, such that "on" means not only "directly on" but also includes the meaning of "on" with intervening features or layers therebetween, and "over" or "above" includes not only the meaning of "over" or "above" but also the meaning of "over" or "above" with no intervening features or layers therebetween (i.e., directly on).

[0149] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0150] Finally, it should be noted that the above-described embodiments are merely intended for describing and illustrating, not limiting, the technical solutions of the present application; even though the present application has been described in detail with reference to the above-described embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that, include: A housing having a receiving cavity, the housing having an adhesive opening located on the side of the housing and communicating with the receiving cavity; A battery cell assembly, wherein the battery cell assembly is disposed in the receiving cavity; The glue injection pipe is connected to the outside of the housing and corresponds to the glue inlet. The glue injection pipe forms a glue filling channel, which communicates with the receiving cavity through the glue inlet. The glue injection pipe is used to inject glue to form a potting glue layer in the receiving cavity and the glue filling channel.

2. The battery according to claim 1, characterized in that, Along the length of the battery, the glue inlet is located on the side wall of the housing, and the glue injection channel extends along the length of the battery.

3. The battery according to claim 1, characterized in that, The housing has an end plate, a surrounding plate, and three side plates. The end plate, the surrounding plate, and the three side plates surround and form the receiving cavity. Along the length of the battery, the size of the side plates is larger than the size of the surrounding plate, and the size of the surrounding plate is greater than or equal to the size of the potting compound layer.

4. The battery according to claim 3, characterized in that, The glue outlet is located on the side plate opposite to the enclosure.

5. The battery according to claim 1, characterized in that, The battery also includes an adapter plate, which is electrically connected to the cell assembly. Along the length of the battery, one side of the adapter plate is electrically connected to a connecting bar, which extends out of the housing.

6. The battery according to claim 5, characterized in that, The battery also includes an outlet and a separator, the outlet and the separator being respectively disposed on the outside of the housing, and the connecting bar passing through the separator and connected to the outlet.

7. The battery according to claim 6, characterized in that, The partition is a mica sheet; and / or The housing has an extension hole, the connecting bar passes through the extension hole, and along the length of the battery, the projection of the extension hole lies within the projection range of the separator; and / or The protruding hole is provided with sealant; and / or The battery also includes a control board, which is connected to the cell assembly via the discharge outlet. The control board is located on the outside of the housing and is positioned on the same side as the glue injection pipe.

8. The battery according to claim 5, characterized in that, Along the length of the battery, the adapter plate is disposed between the cell assembly and the housing and is electrically connected to the cell assembly. The connection is arranged on the side of the adapter plate away from the cell assembly so as to extend out of the housing.

9. The battery according to claim 6, characterized in that, The battery cell assembly includes multiple battery cells stacked along the thickness direction of the battery. Along the length direction of the battery, one side of each battery cell is provided with a tab, which is electrically connected to the adapter plate. The adhesive joint is located between the tabs along the width direction of the battery.

10. The battery according to claim 9, characterized in that, Along the length of the battery, the adhesive opening is located on the same side as the electrode tab and the adapter plate; and / or The potting compound layer covers the tab; and / or The cell assembly further includes foam, which is disposed between the tabs of adjacent cells along the thickness direction of the battery to form multiple flow channels at one end of the cell assembly; and / or The glue injection pipes and glue inlets include multiple types, and along the width direction of the battery, the multiple glue injection pipes, multiple glue inlets, and multiple flow channels correspond to each other; and / or The glue injection pipe and the outlet are located on the same side of the housing, and their projections along the width direction of the battery do not overlap.

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