Battery pack and energy storage power supply

Abstract

The utility model relates to the technical field of batteries, and particularly discloses a battery pack and an energy storage power supply. The battery pack comprises a battery cell and a battery cell support. The battery cell is provided with a first end and a second end, and the battery cell support is provided with an assembling groove. The battery cell bracket comprises a first bracket and a second bracket, and the assembling groove comprises a first assembling groove and a second assembling groove. The first end is inserted into the first assembling groove, and the second end is inserted into the second assembling groove. The assembling groove comprises a side wall, the side wall is provided with a glue groove, and the glue groove is configured to contain bonding glue. In the battery pack, the first end of the battery cell is inserted into the first assembly groove of the first bracket, and the second end of the battery cell is inserted into the second assembly groove of the second bracket. Meanwhile, the bonding glue located in the side wall of the assembling groove can wrap the outer wall of the corresponding part of the battery cell, bonding and fixing between the two ends of the battery cell and the battery support can be achieved, namely, fixing of the two ends of the battery cell is achieved, the risk of relative movement between the battery cell and the battery cell support is reduced, and the reliability of the battery pack is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery pack and an energy storage power supply. BACKGROUND

[0002] For a battery pack, the reliability of its internal structure is crucial, which is directly related to the safety of subsequent use. At present, the battery pack is commonly limited and fixed by a cell support on one side to ensure the stability of the battery pack. However, it is difficult to achieve relative stillness between the cell and the cell support, and relative movement occurs between the battery and the support, which leads to the fact that the battery pack is prone to failure in some vibrating occasions, thereby reducing the reliability of the battery pack. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a battery pack and an energy storage power supply to improve the technical problem that the relative movement between the existing cell and the cell support leads to poor reliability of the battery pack.

[0004] An embodiment of the present application provides a battery pack. The battery pack comprises a cell and a cell support. The cell has a first end and a second end, and the first end and the second end are oppositely arranged. The cell support is provided with an assembly groove. The cell support comprises a first support and a second support, and the assembly groove comprises a first assembly groove arranged on the first support and a second assembly groove arranged on the second support. The first end is inserted into the first assembly groove, and the second end is inserted into the second assembly groove. The assembly groove comprises a side wall, and the side wall is provided with a glue groove configured to accommodate adhesive, so that the portion of the first end inserted into the assembly groove is fixed in the assembly groove by the adhesive, and the portion of the second end inserted into the assembly groove is fixed in the assembly groove by the adhesive.

[0005] In the above battery pack, the first end of the cell is inserted into the first assembly groove of the first support, and the second end of the cell is inserted into the second assembly groove of the second support. At the same time, the adhesive in the side wall of the assembly groove can be wrapped on the outer wall of the corresponding part of the cell. Thus, the adhesive fixing between the two ends (specifically the first end and the second end) of the cell and the battery support can be achieved, that is, the two ends of the cell are fixed, which is conducive to reducing the risk of relative movement between the cell and the cell support, thereby reducing the risk of failure of the battery pack in vibration, and improving the reliability of the battery pack.

[0006] In some embodiments of the present application, the assembly groove is formed in the bottom of the cell support, and the glue groove is arranged along the insertion direction of the cell. The glue groove has a first glue pouring port, and the first glue pouring port is exposed on one side of the cell support provided with the assembly groove.

[0007] When applying glue to the glue tank, technicians only need to insert the glue application equipment (such as a glue gun or glue tube) into the first glue application port, making the operation simple and convenient. Furthermore, since the glue tank is positioned along the cell insertion direction, technicians do not need to adjust the position of the cell support to perform cell assembly and glue application operations, reducing the number of steps required and improving efficiency.

[0008] In some embodiments of this application, the width of the first dispensing port is greater than the width of the glue tank along the insertion direction perpendicular to the battery cell. By setting the width of the first dispensing port to be greater than the width of the glue tank, it is easier for the dispensing equipment to be inserted into the first dispensing port for dispensing operations, thereby improving the convenience of the dispensing operation.

[0009] In some embodiments of this application, a second glue-filling port is provided at the bottom of the cell bracket, and the second glue-filling port is connected to the glue tank. When performing glue-filling operations on the glue tank, technicians can simultaneously fill the glue tank through the first glue-filling port and the second glue-filling port, which helps to improve the glue-filling efficiency of the cell bracket.

[0010] In some embodiments of this application, there is one second dispensing port. The cell support is provided with a dispensing channel communicating with the second dispensing port, and the dispensing channel is connected to the glue tank.

[0011] By combining the second glue inlet and the glue flow channel, the cell bracket can simultaneously fill multiple glue tanks with one glue inlet. This helps to reduce the number of second glue inlets on the cell bracket while ensuring the glue filling efficiency of the cell bracket, thus improving the overall aesthetics of the cell bracket.

[0012] In some embodiments of this application, the cell support is provided with a guide slope in the adhesive flow channel, and the guide slope is configured to guide the adhesive to flow into the adhesive trough.

[0013] By setting the guide slope, it is not only beneficial to guide the adhesive into the glue tank to ensure that the adhesive is evenly contained in the glue tank, but also to reduce the flow speed of the adhesive, so that the adhesive flows into the glue tank smoothly and reduces the risk of adhesive splashing due to excessive flow speed.

[0014] In some embodiments of this application, a filling gap is formed between the sidewall and the outer wall of the battery cell, and the filling gap communicates with the adhesive groove. The filling gap is configured to allow adhesive in the adhesive groove to flow and fill when the battery cell is inserted into the assembly groove.

[0015] During the process of inserting the battery cell into the assembly slot, the adhesive in the slot can overflow and fill the gap under the pressure of the battery cell. In other words, the adhesive covers the outer wall of the battery cell that is not aligned with the slot, which helps to increase the bonding area between the battery cell and the battery cell support, thereby improving the stability of the battery cell fixation and reducing the risk of relative movement between the battery cell and the battery cell support.

[0016] In some embodiments of this application, the width of the filling gap along the insertion direction perpendicular to the battery cell ranges from 0.1mm to 0.3mm.

[0017] By limiting the width of the filling gap to 0.1mm-0.3mm, firstly, it helps ensure that the battery cell can be smoothly inserted into the assembly slot, reducing the risk of the battery cell being unable to be installed or getting stuck during installation due to an excessively small filling gap; secondly, it allows for a sufficiently thick adhesive layer to be applied to the outer wall of the battery cell, improving the bonding strength between the battery cell and the battery cell bracket, thus better improving the stability of the battery cell fixation and reducing the risk of relative movement between the battery cell and the battery cell bracket.

[0018] In some embodiments of this application, the depth of the adhesive groove along the insertion direction perpendicular to the battery cell is D, where D ≥ 0.6 mm. By limiting the depth of the adhesive groove to be greater than or equal to 0.6 mm, it is beneficial to ensure that the adhesive is effectively contained within the groove, reducing the risk of adhesive overflow and contamination of the battery cell support due to insufficient groove depth.

[0019] In some embodiments of this application, the assembly slot further includes a bottom wall connected to the side wall, and the plane of the bottom wall is perpendicular to the insertion direction of the battery cell. The bottom wall is configured to stop either the first end or the second end when the battery cell is inserted into the assembly slot.

[0020] When inserting the battery cell into the assembly slot, the bottom wall can stop the end of the battery cell (specifically the first end or the second end) to restrain the movement of the battery cell. This helps to reduce the risk of the battery cell moving outside the battery cell support due to operator error, resulting in the battery being compressed dry.

[0021] In some embodiments of this application, a retaining ring is provided on the bottom wall along the extending direction of the side wall, and the retaining ring, the side wall, and the bottom wall together form a first overflow groove. The first overflow groove communicates with the glue groove. The first overflow groove is configured to accommodate excess adhesive when the battery cell is inserted into the assembly groove.

[0022] When the battery cell is inserted into the assembly slot, the first overflow groove can accommodate excess adhesive, such as some adhesive scraped off during the insertion of the battery cell into the assembly slot, or excess adhesive poured in by the dispensing equipment. This helps reduce the risk of poor welding between the battery cell and the busbar due to adhesive flowing into the battery cell's terminals, thereby improving the stability and installability of the battery pack.

[0023] In some embodiments of this application, the adhesive-blocking protrusion is located on the side of the sidewall facing the battery cell. Technicians can machine the adhesive-blocking protrusion simultaneously with the assembly groove, which helps improve the manufacturing efficiency of the battery cell support.

[0024] In some embodiments of this application, a second adhesive overflow groove is recessed in the sidewall along the insertion direction perpendicular to the battery cell, and the second adhesive overflow groove communicates with the adhesive groove. The second adhesive overflow groove is configured to accommodate excess adhesive when the battery cell is inserted into the assembly groove.

[0025] The cell support can simultaneously accommodate excess adhesive through the first and second overflow grooves, which helps to reduce the risk of poor welding between the terminals and the busbars caused by adhesive flowing into the cell terminals, thereby improving the stability and installability of the battery pack.

[0026] In some embodiments of this application, along the insertion direction of the battery cell, the height of the glue groove is H2, the height of the battery cell is H3, and H2≥1 / 3*H3.

[0027] By limiting the height of the adhesive groove to be greater than or equal to 1 / 3 of the cell height, it is beneficial to ensure that the cell bracket effectively restrains the cell, reducing the risk of relative movement between the cell and the cell bracket due to insufficient bonding height between the cell bracket and the cell, thus improving the stability of the battery pack.

[0028] In some embodiments of this application, the battery cell has a welding area located at a first end or a second end. The first overflow groove is annular, and when viewed along the insertion direction of the battery cell, the welding area is located within the inner ring of the first overflow groove and is separate from the first overflow groove.

[0029] By setting the welding area to be located in the inner ring of the first overflow groove and separated from the first overflow groove, that is, the welding area is closer to the axis of the cell, it can be ensured that the adhesive blocking protrusion always abuts against the cell outside the welding area. This ensures that excess adhesive is always stored in the first overflow groove, which helps to reduce the risk of adhesive in the first overflow groove flowing into the welding area and improves the stability and installability of the battery pack.

[0030] In some embodiments of this application, the battery cell further includes an explosion-proof valve, which is installed at the first end and / or the second end. A clearance hole is provided on the bottom wall, and the projection of the clearance hole along the insertion direction of the battery cell covers the explosion-proof valve.

[0031] The design of the clearance hole helps ensure the normal operation of the explosion-proof valve in the battery cell, reducing the risk of explosion or fire caused by gas accumulation inside the battery cell due to the battery cell bracket blocking the normal operation of the explosion-proof valve, thus improving the safety of the battery pack.

[0032] In some embodiments of this application, the bottom wall is further provided with a positioning part, which is configured to cooperate with the electrode post of the battery cell when the battery cell is inserted into the assembly slot.

[0033] The positioning part improves the assembly efficiency and accuracy of the battery cell and its support. When inserting the battery cell into the assembly slot, technicians only need to align the battery cell's terminal with the positioning part to achieve cell positioning.

[0034] One embodiment of this application provides an energy storage power source. The energy storage power source includes a housing and a battery pack as described in any embodiment, the battery pack being disposed within the housing.

[0035] In the aforementioned energy storage power supply, the battery pack described in any of the above embodiments is used. The first end of the battery cell is inserted into the first mounting slot of the first bracket, and the second end of the battery cell is inserted into the second mounting slot of the second bracket. Simultaneously, the adhesive in the sidewall of the mounting slot can cover the outer wall of the corresponding portion of the battery cell. This achieves adhesive fixation between both ends of the battery cell (specifically the first and second ends) and the battery bracket, thus fixing both ends of the battery cell. This helps reduce the risk of relative movement between the battery cell and the battery cell bracket, thereby reducing the risk of vibration failure of the battery pack and improving the reliability of the battery pack. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0037] Figure 1 A schematic diagram of the battery pack structure is provided for one embodiment of this application;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure of the battery cells in the battery pack;

[0039] Figure 3 for Figure 1 The diagram shows a cross-sectional structure of the battery pack after it has been cut along line III-III.

[0040] Figure 4 for Figure 1 The diagram shows the structural diagram of the cell support structure in the battery pack.

[0041] Figure 5 for Figure 4 A magnified view of section V;

[0042] Figure 6 for Figure 3 A magnified view of a section at point VⅡ;

[0043] Figure 7 A schematic diagram of the structure of the glue tank and the first glue inlet in one embodiment of this application is provided;

[0044] Figure 8A schematic diagram of the structure of the glue tank, the second glue inlet, and the glue channel in accordance with an embodiment of this application is provided.

[0045] Figure 9 A schematic diagram of the structure of the glue tank, the second glue inlet, the glue guiding slope and the glue channel in one embodiment of this application is provided.

[0046] Figure 10 for Figure 4 A schematic diagram of the cross-sectional structure of the battery cell support after being cut along line X-X;

[0047] Figure 11 for Figure 10 Enlarged view of section XI;

[0048] Figure 12 A partial structural diagram of the battery cell bracket is provided in one embodiment of this application when the first overflow groove and the second overflow groove are simultaneously formed.

[0049] Figure 13 A schematic diagram of the structure of an energy storage power supply is provided for one embodiment of this application;

[0050] Figure 14 for Figure 13 The diagram shows the exploded structure of the energy storage power source.

[0051] Explanation of key component symbols:

[0052] 100. Power supply; 10. Battery pack; 20. Outer shell; 11. Battery cell; 12. Battery cell bracket; 111. First end; 112. Second end; 113. Welding area; 114. Explosion-proof valve; 12a. First bracket; 12b. Second bracket; 121. Assembly groove; 122. Side wall; 123. Second glue inlet; 124. Glue flow channel; 125. Glue guiding slope; 126. Filling gap; 127. Bottom wall; 128. First overflow groove; 129. Second overflow groove; 1221. Glue tank; 1222. First glue inlet; 1271. Glue-blocking protrusion; 1272. Clearance hole; 1273. Positioning part.

[0053] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0056] For battery packs, the reliability of their internal structure is crucial, directly affecting the safety of subsequent use. Currently, cell brackets are commonly used to limit and fix the cells on one side, ensuring the stability of the battery pack.

[0057] However, it is difficult to achieve relative stillness between the battery cells and the cell support structure; relative movement will occur between the battery and the support structure. This can lead to vibration failure of the battery pack in some vibrating environments, reducing the reliability of the battery pack.

[0058] For example, during the UN38.3 vibration test, the cells and cell supports often move relative to each other, which can lead to cell failure, busbar failure, or support failure, making the battery unable to pass the UN38.3 vibration test.

[0059] For example, when a battery pack is used on a machine with strong vibrations, the cells and the cell support may move relative to each other, causing the battery pack to malfunction or even leading to short circuits and explosions.

[0060] One embodiment of this application provides a battery pack. The battery pack includes battery cells and a battery cell support. The battery cell has a first end and a second end, which are disposed opposite to each other. The battery cell support is provided with an assembly slot. The battery cell support includes a first support and a second support, and the assembly slot includes a first assembly slot disposed on the first support and a second assembly slot disposed on the second support. The first end is inserted into the first assembly slot, and the second end is inserted into the second assembly slot. The assembly slot includes a sidewall with an adhesive groove configured to accommodate adhesive, such that the portion of the first end inserted into the assembly slot is fixed in the assembly slot by the adhesive, and the portion of the second end inserted into the assembly slot is fixed in the assembly slot by the adhesive.

[0061] In the aforementioned battery pack, the first end of the battery cell is inserted into the first mounting slot of the first bracket, and the second end of the battery cell is inserted into the second mounting slot of the second bracket. Simultaneously, adhesive located on the sidewall of the mounting slot can coat the outer wall of the corresponding portion of the battery cell. This achieves adhesive fixation between both ends of the battery cell (specifically the first and second ends) and the battery bracket, effectively fixing both ends of the battery cell. This reduces the risk of relative movement between the battery cell and the battery cell bracket, thereby reducing the risk of vibration-induced failure of the battery pack and improving its reliability.

[0062] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0063] Please refer to the following: Figures 1 to 3 One embodiment of this application provides a battery pack 10. The battery pack 10 can be used as a DC power source to power external devices (not shown), or it can be combined with an inverter module to form an energy storage power source for use as an AC power source. In this embodiment, the energy storage power source can be used in outdoor recreational and work scenarios, or in home emergency backup power scenarios, etc.

[0064] Specifically, the battery pack 10 includes a battery cell 11 and a battery cell support 12. The battery cell 11 has a first end 111 and a second end 112, which are arranged opposite to each other. It is worth noting that the battery cell 11 can be cylindrical, square, or other shapes. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0065] In some embodiments, the cell support 12 is provided with an assembly slot 121. The cell support 12 includes a first support 12a and a second support 12b. The assembly slot 121 includes a first assembly slot (not shown) disposed in the first support 12a and a second assembly slot (not shown) disposed in the second support 12b. A first end 111 is inserted into the first assembly slot, and a second end 112 is inserted into the second assembly slot.

[0066] By cooperating with the first bracket 12a and the second bracket 12b, the two ends of the battery cell 11 (specifically the first end 111 and the second end 112) can be fixed, which helps to reduce the risk of relative movement between the battery cell 11 and the battery cell bracket 12, reduce the risk of vibration failure of the battery pack 10, and improve the reliability of the battery pack 10.

[0067] It is worth noting that the first bracket 12a and the second bracket 12b have the same structure, and the first assembly slot and the second assembly slot have the same structure. The assembly slot 121 described below refers to the first assembly slot and the second assembly slot, and the cell 11 bracket 12 described below refers to the first bracket 12a and the second bracket 12b.

[0068] Please refer to the following: Figures 3 to 5 In some embodiments, the assembly groove 121 includes a sidewall 122, the sidewall 122 being provided with an adhesive groove 1221, the adhesive groove 1221 being configured to accommodate adhesive, such that the portion of the first end 111 inserted into the assembly groove 121 is fixed in the assembly groove 121 by adhesive, and the portion of the second end 112 inserted into the assembly groove 121 is fixed in the assembly groove 121 by adhesive.

[0069] Understandably, when the battery cell 11 is inserted into the battery cell bracket 12, the adhesive in the side wall 122 of the assembly groove 121 can cover the outer wall of the corresponding part of the battery cell 11, which can achieve bonding and fixation between the two ends of the battery cell 11 and the battery cell bracket 12. This helps to better reduce the risk of relative movement between the battery cell 11 and the battery cell bracket 12, thereby reducing the risk of vibration failure of the battery pack 10 and improving the reliability of the battery pack 10.

[0070] For example, when the first end 111 of the battery cell 11 is inserted into the first assembly slot, the adhesive on the side wall 122 of the first assembly slot covers the outer wall of the first end 111 of the battery cell 11 to achieve a fixed connection between the first end 111 of the battery cell 11 and the battery cell support 12.

[0071] When the second end 112 of the battery cell 11 is inserted into the second assembly slot, the adhesive on the side wall 122 of the second assembly slot covers the outer wall of the second end 112 of the battery cell 11 to achieve a fixed connection between the second end 112 of the battery cell 11 and the battery cell support 12.

[0072] It is worth noting that this application does not limit the order of glue filling in the glue tank 1221 and insertion of the battery cell 11, and those skilled in the art can choose according to the actual situation.

[0073] In some embodiments, adhesive can be first poured into the glue tank 1221 using a glue dispensing device (e.g., glue gun, glue tube, etc.). After the adhesive is contained in the glue tank 1221, the two ends of the battery cell 11 are then inserted into the corresponding assembly slots 121 so that the adhesive covers the outer walls of the two ends of the battery cell 11, thereby achieving the bonding and fixation between the battery cell 11 and the battery cell support 12.

[0074] In some embodiments, the two ends of the battery cell 11 can be inserted into the corresponding assembly slots 121 first. After the two ends of the battery cell 11 are inserted into the corresponding assembly slots 121, adhesive is poured into the glue tank 1221 by the glue pouring equipment so that the adhesive covers the outer wall of the two ends of the battery cell 11, thereby achieving the bonding and fixing between the battery cell 11 and the battery cell support 12.

[0075] In some embodiments, the adhesive may be one or more of polyurethane, acrylic, epoxy resin, and silicone. This application does not limit this choice, and those skilled in the art can select the appropriate adhesive based on the specific circumstances.

[0076] Please refer to the following: Figures 4 to 6 In some embodiments, the assembly groove 121 is formed at the bottom of the cell support 12. The glue groove 1221 is provided along the insertion direction of the cell 11. The glue groove 1221 has a first glue inlet 1222, which is exposed on the side of the cell support 12 where the assembly groove 121 is provided.

[0077] Understandably, when performing glue dispensing operation on the glue tank 1221, the technician only needs to insert the glue dispensing equipment into the first glue dispensing port 1222 and inject the adhesive into the glue tank 1221, which is simple and convenient to operate.

[0078] Meanwhile, since the glue tray 1221 is set along the insertion direction of the battery cell 11, technicians do not need to adjust the position of the battery cell bracket 12 to perform battery cell 11 assembly and glue filling operations, which helps to reduce the number of operation steps for technicians and improve efficiency.

[0079] For example, the technician first inserts the glue-dispensing equipment into the first glue-dispensing port 1222 along the insertion direction of the battery cell 11, and injects adhesive into the glue tank 1221. After the adhesive is injected, the technician can directly insert both ends of the battery cell 11 into the corresponding assembly slots 121.

[0080] In other embodiments, the glue groove 1221 may not be arranged along the insertion direction of the battery cell 11. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0081] Please see Figure 7 In some embodiments, along the insertion direction perpendicular to the cell 11, the width of the first glue inlet 1222 is greater than the width of the glue tank 1221. By setting the width of the first glue inlet 1222 to be greater than the width of the glue tank 1221, it is easier for the glue dispensing equipment to insert into the first glue inlet 1222 for glue dispensing operations, thereby improving the convenience of glue dispensing operations.

[0082] For example, the first glue-filling port 1222 is funnel-shaped. The wide end of the first glue-filling port 1222 is exposed at the bottom of the cell support 12, and the narrow end of the first glue-filling port 1222 is connected to the glue tank 1221.

[0083] When the cell support 12 is potted, the dispensing part of the potting equipment is inserted into the wide end of the first potting port 1222 and adhesive is injected. The adhesive flows from the wide end of the first potting port 1222 to the narrow end of the first potting port 1222 and flows into the glue tank 1221, thus realizing the potting of the glue tank 1221.

[0084] Please refer to the following: Figure 8 and Figure 9 In some embodiments, the bottom of the cell support 12 is provided with a second glue inlet 123, which is connected to the glue tank 1221. When performing glue filling operation on the glue tank 1221, technicians can simultaneously fill the glue tank 1221 through the first glue inlet 1222 and the second glue inlet 123, which helps to improve the glue filling efficiency of the cell support 12.

[0085] In some embodiments, the number of second dispensing ports 123 is one. The cell 11 support 12 is provided with a dispensing channel 124 communicating with the second dispensing port 123, and the dispensing channel 124 communicating with the glue tank 1221. Understandably, when performing a dispensing operation on the glue tank 1221, a technician inserts a dispensing device into the second dispensing port 123 and injects adhesive. The adhesive flows along the dispensing channel 124 and into the glue tank 1221.

[0086] With the cooperation of the second glue-filling port 123 and the glue-flowing channel 124, the cell bracket 12 can simultaneously fill multiple glue tanks 1221 with glue from one glue-filling port. This helps to reduce the number of second glue-filling ports 123 on the cell bracket 12 while ensuring the glue-filling efficiency of the cell bracket 12, and improves the overall aesthetics of the cell bracket 12.

[0087] In some embodiments, within the adhesive flow channel 124, the cell support 12 is provided with an adhesive guiding slope 125, which is configured to guide the adhesive into the adhesive tank 1221. The adhesive guiding slope 125 not only facilitates guiding the adhesive into the adhesive tank 1221, ensuring uniform distribution of adhesive within the tank, but also helps reduce the flow rate of the adhesive, allowing it to flow smoothly into the tank 1221 and reducing the risk of adhesive splashing due to excessively fast flow.

[0088] Please refer to the following: Figure 3 , Figure 10 and Figure 11 In some embodiments, a filling gap 126 is formed between the sidewall 122 and the outer wall of the cell 11, and the filling gap 126 communicates with the adhesive groove 1221. The filling gap 126 is configured to allow adhesive to flow and fill in the adhesive groove 1221 when the cell 11 is inserted into the assembly groove 121.

[0089] Understandably, during the process of inserting the battery cell 11 into the assembly slot 121, the adhesive in the glue groove 1221 can overflow and fill the filling gap 126 under the squeezing action of the battery cell 11, so that the adhesive covers the outer wall of the battery cell 11 that is not aligned with the glue groove 1221.

[0090] By filling the gap 126, the bonding area between the battery cell 11 and the battery cell support 12 is increased, thereby improving the stability of the battery cell 11 and reducing the risk of relative movement between the battery cell 11 and the battery cell support 12.

[0091] It is worth noting that the outer wall of the battery cell 11 that is not aligned with the glue tray 1221 specifically refers to the outer wall of the battery cell 11 that is aligned with the side wall 122 of the assembly groove 121. In other words, the outer wall of the battery cell 11 that is not aligned with the glue tray 1221 specifically refers to the portion where the projection of the battery cell 11 and the side wall 122 overlaps along the insertion direction perpendicular to the battery cell 11.

[0092] It should also be noted that when the battery cell 11 is assembled by first inserting the battery cell 11 and then applying adhesive, the adhesive application equipment injects the adhesive into the adhesive tank 1221. The adhesive can still flow and fill the filling gap 126, and cover the outer wall of the battery cell 11 that is not aligned with the adhesive tank 1221.

[0093] In some embodiments, the width of the filling gap 126 along the insertion direction perpendicular to the cell 11 ranges from 0.1 mm to 0.3 mm. Optionally, the width of the filling gap 126 is 0.2 mm.

[0094] By limiting the width of the filling gap 126 to 0.1mm-0.3mm, firstly, it helps to ensure that the battery cell 11 can be smoothly inserted into the assembly slot 121, reducing the risk that the battery cell 11 cannot be installed or may get stuck during installation due to the filling gap 126 being too small; secondly, it helps to cover the outer wall of the battery cell 11 with a sufficiently thick adhesive layer, improving the bonding strength between the battery cell 11 and the battery cell bracket 12, better improving the stability of the battery cell 11 fixation, and reducing the risk of relative movement between the battery cell 11 and the battery cell bracket 12.

[0095] In some embodiments, the depth of the adhesive groove 1221 along the insertion direction perpendicular to the cell 11 is D, where D ≥ 0.6 mm. Optionally, the depth of the adhesive groove 1221 is D = 0.8 mm. By limiting the depth of the adhesive groove 1221 to be greater than or equal to 0.6 mm, it is beneficial to ensure that the adhesive is effectively contained within the adhesive groove 1221, reducing the risk of adhesive overflow and contamination of the cell support 12 due to the insufficient depth of the adhesive groove 1221.

[0096] Please refer to the following: Figure 1 and Figure 3 In some embodiments, along the insertion direction of the battery cell 11, the height of the adhesive groove 1221 is H2, and the height of the battery cell 11 is H3, where H2 ≥ 1 / 3 * H3. In other words, the height of the adhesive groove 1221 needs to ensure that after the battery cell 11 is fixedly bonded to the battery cell bracket 12, the battery cell bracket 12 can cover 1 / 3 of the battery cell 11.

[0097] It is worth noting that the height H2 of the aforementioned glue groove 1221 is the sum of the height of the glue groove 1221 in the first assembly groove 121 of the first bracket 12a and the height of the glue groove 1221 in the second assembly groove 121 of the second bracket 12b.

[0098] By limiting the height of the adhesive groove 1221 to be greater than or equal to 1 / 3 of the height of the battery cell 11, it is beneficial to ensure that the battery cell bracket 12 effectively binds the battery cell 11, reducing the risk that the battery cell 11 and the battery cell bracket 12 will still move relative to each other due to insufficient bonding and fixing height between the battery cell bracket 12 and the battery cell 11, thus better improving the stability of the battery pack 10.

[0099] For example, if the model of the battery cell 11 is 14500, that is, the diameter of the battery cell 11 is 14mm and the height is 50mm, then the height of the glue groove 1221 is 20mm. In other embodiments, the height of the glue groove 1221 can also be other values, which are not limited in this application, and those skilled in the art can choose according to the actual situation.

[0100] Please refer to the following: Figure 6 , Figure 10 and Figure 11 In some embodiments, the assembly slot 121 further includes a bottom wall 127 connected to the side wall 122, and the plane of the bottom wall 127 is perpendicular to the insertion direction of the battery cell 11. The bottom wall 127 is configured to stop either the first end 111 or the second end 112 when the battery cell 11 is inserted into the assembly slot 121.

[0101] Understandably, when the battery cell 11 is inserted into the assembly slot 121, the bottom wall 127 can stop the ends of the battery cell 11 (specifically the first end 111 and the second end 112) to restrain the movement of the battery cell 11. This helps to reduce the risk of the battery cell 11 moving outside the battery cell support 12 due to the misoperation of the technician, resulting in the battery being compressed dry.

[0102] Please refer to the following: Figure 6 , Figure 10 and Figure 11 In some embodiments, the bottom wall 127 has a protruding adhesive-blocking ring 1271 extending along the side wall 122. The adhesive-blocking ring 1271, the side wall 122, and the bottom wall 127 together form a first adhesive overflow groove 128. The first adhesive overflow groove 128 communicates with the adhesive groove 1221 and is configured to accommodate excess adhesive when the battery cell 11 is inserted into the assembly groove 121.

[0103] Understandably, when the battery cell 11 is inserted into the mounting slot 121 of the battery cell bracket 12, the end of the battery cell 11 will scrape away some of the adhesive in the adhesive groove 1221. The scraped adhesive is moved and contained in the first overflow adhesive groove 128 under the drive of the battery cell 11.

[0104] In some embodiments, when adhesive is poured into the glue tank 1221 by the glue dispensing device, the excess adhesive injected by the glue dispensing device will also flow into and be contained in the first overflow tank 128.

[0105] The first overflow groove 128 helps to reduce the risk of poor welding between the terminal and the busbar caused by adhesive flowing into the terminal of the cell 11, thereby improving the stability and installability of the battery pack 10.

[0106] In some embodiments, the adhesive-blocking protrusion 1271 is located on the side of the sidewall 122 facing the battery cell 11. Technicians can machine the adhesive-blocking protrusion 1271 simultaneously with the assembly groove 121, which helps improve the manufacturing efficiency of the battery cell support 12.

[0107] In other embodiments, the adhesive-blocking protrusion 1271 may also be located on the side of the sidewall 122 away from the battery cell 11, that is, the first adhesive overflow groove 128 is located outside the assembly groove 121. A through hole (not shown) is provided on the sidewall 122 within the adhesive groove 1221. Adhesive flows into the first adhesive overflow groove 128 through the through hole.

[0108] By setting the adhesive-blocking protrusion 1271 on the side wall 122 away from the battery cell 11, it is beneficial for technicians to clean up excess adhesive or collect excess adhesive for reuse, thereby reducing costs.

[0109] In some embodiments, the depth of the first overflow groove 128 along the insertion direction of the battery cell 11 is H1, where H1 ≥ 0.25 mm. Optionally, the depth of the first overflow groove 128 is 0.26 mm.

[0110] By limiting the depth of the first overflow groove 128 to greater than or equal to 0.25 mm, it is beneficial to reduce the risk that adhesive may flow into the terminal of the cell 11 due to the insufficient depth of the first overflow groove 128, resulting in poor welding of the terminal and busbar in the future, thereby better improving the stability and installability of the battery pack 10.

[0111] Please see Figure 12 In some embodiments, a second adhesive overflow groove 129 is recessed in the sidewall 122 along the insertion direction perpendicular to the battery cell 11, and the second adhesive overflow groove 129 communicates with the adhesive groove 1221. The second adhesive overflow groove 129 is configured to accommodate excess adhesive when the battery cell 11 is inserted into the assembly groove 121.

[0112] When the battery cell 11 is inserted into the assembly slot 121, the battery cell bracket 12 can simultaneously accommodate excess adhesive through the first overflow groove 128 and the second overflow groove 129. This helps to better reduce the risk of poor welding between the terminal and the busbar caused by adhesive flowing into the terminal of the battery cell 11, thereby improving the stability and installability of the battery pack 10.

[0113] Please refer to the following: Figure 2 , Figure 3 and Figure 6In some embodiments, the battery cell 11 is provided with a welding area 113, which is located at the first end 111 or the second end 112. The first adhesive overflow groove 128 is annular. Viewed along the insertion direction of the battery cell 11, the welding area 113 is located in the inner ring of the first adhesive overflow groove 128 and is separated from the first adhesive overflow groove 128. In other words, along the insertion direction perpendicular to the battery cell 11, the welding area 113 is closer to the axis of the battery cell 11 than the first adhesive overflow groove 128.

[0114] Understandably, when the battery cell 11 is inserted into the assembly slot 121, the adhesive-retaining protrusion 1271 always abuts against the battery cell 11 on the outside of the welding area 113. This ensures that excess adhesive is always stored in the first overflow groove 128 and does not flow out along the gap between the adhesive-retaining protrusion 1271 and the battery cell 11. This helps to better reduce the risk of poor welding caused by adhesive flowing into the welding area 113, and improves the stability and installability of the battery pack 10.

[0115] In some embodiments, the battery cell 11 further includes an explosion-proof valve 114, which is installed at the first end 111 and / or the second end 112. A clearance hole 1272 is provided on the bottom wall 127, and the projection of the clearance hole 1272 along the insertion direction of the battery cell 11 covers the explosion-proof valve 114.

[0116] The setting of the clearance hole 1272 helps to ensure the normal operation of the explosion-proof valve 114 in the battery cell 11, reducing the risk of explosion or fire caused by gas accumulation inside the battery cell 11 due to the battery cell bracket 12 blocking the normal operation of the explosion-proof valve 114, thus better improving the safety of the battery pack 10.

[0117] Please refer to the following: Figures 4 to 6 In some embodiments, the bottom wall 127 is further provided with a positioning part 1273, which is configured to cooperate with the terminal post of the battery cell 11 when the battery cell 11 is inserted into the assembly slot 121. The provision of the positioning part 1273 helps to improve the assembly efficiency and accuracy of the battery cell 11 and the battery cell support 12.

[0118] For example, the bottom wall 127 is provided with a stop bar (not shown), and the stop bar has a notch (not shown) that matches the shape of the terminal post of the battery cell 11. When the battery cell 11 is inserted into the assembly slot 121, the terminal post of the battery cell 11 is engaged in the notch.

[0119] In other embodiments, other positioning structures may also be used, and this application does not limit them. Those skilled in the art can choose according to the actual situation.

[0120] Please refer to the following: Figure 13 and Figure 14An embodiment of this application also provides an energy storage power supply 100. The energy storage power supply 100 has the functions of storing and discharging electricity, and can be used for household backup power, production unit backup power, outdoor work, outdoor recreation, etc.

[0121] Please see Figure 3 The energy storage power supply 100 includes a housing 20 and a battery pack 10 as described in any embodiment, with the battery pack 10 disposed within the housing 20. The energy storage power supply 100 provided in this application uses the aforementioned battery pack 10. The first end 111 of the battery cell 11 is inserted into the first mounting groove 121 of the first bracket 12a, and the second end 112 of the battery cell 11 is inserted into the second mounting groove 121 of the second bracket 12b. Simultaneously, the adhesive in the sidewall 122 of the mounting groove 121 can cover the outer wall of the corresponding portion of the battery cell 11.

[0122] This allows for the bonding and fixing of both ends of the battery cell 11 (specifically, the first end 111 and the second end 112) with the battery cell bracket 12, thus fixing both ends of the battery cell 11. This helps reduce the risk of relative movement between the battery cell 11 and the battery cell bracket 12, thereby reducing the risk of vibration failure of the battery pack 10 and improving the reliability of the battery pack 10.

[0123] The energy storage power supply 100 also includes a power conversion module (not shown). The power conversion module is housed within the housing 20. The housing 20 protects the power conversion module. The power conversion module is electrically connected to the battery pack 10. The power conversion module is used to control the AC / DC conversion of the output current of the battery pack 10. Energy storage devices equipped with a power conversion module can be small portable power banks, residential energy storage power supplies 100, commercial and industrial energy storage power supplies 100, or containerized energy storage power supplies 100, etc.

[0124] In some embodiments, the power conversion module may be omitted. Energy storage devices without a power conversion module can be used independently. Energy storage devices without a power conversion module typically only output DC power. When used independently, energy storage devices without a power conversion module can be used in conjunction with energy storage devices that have a power conversion module as a power system providing additional battery capacity.

[0125] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A battery pack, characterized by, The application relates to a battery cell holder. The battery cell holder comprises a battery cell and a battery cell holder. The battery cell holder comprises a first holder and a second holder. The battery cell holder comprises a first assembly slot and a second assembly slot.

2. The battery pack of claim 1, wherein, The assembly slot comprises a side wall.

3. The battery pack of claim 2, wherein, The side wall comprises a glue groove.

4. The battery pack of claim 1, wherein, The glue groove is configured to accommodate adhesive glue.

5. The battery pack of claim 4, wherein, The assembly slot is formed in the bottom of the battery cell holder.

6. The battery pack of claim 5, wherein, The glue groove is arranged along the insertion direction of the battery cell.

7. The battery pack of any one of claims 1-6, wherein, The first glue pouring port is exposed on the side of the battery cell holder.

8. The battery pack of claim 7, wherein, The width of the first glue pouring port is greater than the width of the glue groove.

9. The battery pack of any one of claims 1-7, wherein, The bottom of the battery cell holder is provided with a second glue pouring port.

10. The battery pack of any one of claims 1-7, wherein, The second glue pouring port is connected with the glue groove. The second glue pouring port is provided with a glue flow channel.

11. The battery pack of claim 10, wherein, The glue flow channel is connected with the glue groove.

12. The battery pack of claim 11, wherein, The battery cell holder is provided with a glue guide slope in the glue flow channel.

13. The battery pack of claim 11, wherein, The glue guide slope is configured to guide the adhesive glue to flow into the glue groove.

14. The battery pack of any one of claims 1-7, wherein, The side wall and the outer wall of the battery cell form a filling gap.

15. The battery pack of any one of claims 1-7, wherein, The filling gap is connected with the glue groove. The width of the filling gap is 0.1-0.3 mm. The depth of the glue groove is D, and D is greater than or equal to 0.6 mm. The assembly slot further comprises a bottom wall. The bottom wall is connected with the side wall. The bottom wall is configured to stop the first end or the second end when the battery cell is inserted into the assembly slot. The bottom wall is provided with a glue blocking convex ring along the extension direction of the side wall. The glue blocking convex ring, the side wall and the bottom wall jointly form a first glue overflow groove. The first glue overflow groove is connected with the glue groove. The first glue overflow groove is configured to accommodate excess adhesive glue when the battery cell is inserted into the assembly slot. The glue blocking convex ring is located on the side of the side wall facing the battery. The depth of the first glue overflow groove is H1, and H1 is greater than or equal to 0.25 mm. The side wall is provided with a second glue overflow groove along the direction perpendicular to the insertion direction of the battery cell. The second glue overflow groove is connected with the glue groove. The second glue overflow groove is configured to accommodate excess adhesive glue when the battery cell is inserted into the assembly slot. The height of the glue groove is H2, and the height of the battery cell is H3. H2 is greater than or equal to 1 / 3*H3.

16. The battery pack of claim 11, wherein, The electric core is provided with a welding area, the welding area is located at the first end or the second end; the first glue overflow groove is annular, and the welding area is located at the inner ring of the first glue overflow groove and separated from the first glue overflow groove in the insertion direction of the electric core.

17. The battery pack of claim 10, wherein, The electric core further comprises an explosion-proof valve, the explosion-proof valve is installed at the first end and / or the second end; the bottom wall is provided with a relief hole, and the projection of the relief hole in the insertion direction of the electric core covers the explosion-proof valve.

18. The battery pack of claim 10, wherein, The bottom wall is further provided with a positioning part, and the positioning part is configured to cooperate with the pole of the electric core when the electric core is inserted into the assembly groove.

19. An energy storage power supply comprising a housing, characterized by The energy storage power supply further comprises the battery pack according to any one of claims 1 to 18, and the battery pack is arranged in the shell.

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