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 first end and the second end are oppositely arranged. The battery cell support is provided with an assembling groove, and the first end or the second end is inserted into the assembling groove. The assembling groove comprises a side wall, and the side wall is provided with a glue groove. The glue groove is configured to contain adhesive glue, so that the part, inserted into the assembling groove, of the battery cell is fixed in the assembling groove through the adhesive glue. According to the battery pack, the outer diameter tolerance of the battery cells of the same specification between different manufacturers can be flattened through the adhesive, the universality of the battery cell bracket can be improved, the same battery cell bracket can be compatible with the battery cells of the same specification of different manufacturers, the risk of relative movement between the battery cells and the battery cell bracket can be reduced, and the battery cell bracket is convenient to use. The risk of vibration failure of the battery pack is reduced, and the reliability of the battery pack is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery pack and energy storage power supply. Background Technology

[0002] In related technologies, battery brackets are typically used to limit and fix the battery to ensure its stability. However, even for the same model of battery cell, the outer diameter tolerance may vary depending on the manufacturer. Existing battery cell brackets are highly specific; one type of bracket can only be used with cells from one manufacturer. When the manufacturer changes, the original bracket becomes unusable, necessitating the manufacture of a new bracket and increasing costs. Utility Model Content

[0003] In view of this, this application provides a battery pack and energy storage power supply to improve the technical problem that existing cell support structures cannot be compatible with cells of the same specifications from different manufacturers, resulting in high production costs.

[0004] One embodiment of this application provides a battery pack. The battery pack includes a battery cell 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 has a mounting groove, into which the first end or the second end is inserted. The mounting groove includes a sidewall with an adhesive groove. The adhesive groove is configured to receive adhesive so that the portion of the battery cell inserted into the mounting groove is fixed within the mounting groove by the adhesive.

[0005] In the aforementioned battery pack, when the first or second end of the battery cell is inserted into the assembly slot, adhesive on the sidewall of the assembly slot covers the outer wall of the battery cell to secure it to the cell support. Firstly, the adhesive can smooth out the outer diameter tolerances of batteries of the same specification from different manufacturers, improving the versatility of the cell support and allowing it to be compatible with batteries of the same specification from different manufacturers. This eliminates the need for technicians to remanufacture the cell support, reducing production costs. Secondly, it reduces the risk of relative movement between the battery cell and the cell support, lowering the risk of vibration-induced failure in the battery pack and improving its reliability.

[0006] In some embodiments of this application, an assembly groove is formed at the bottom of the cell support, and an adhesive groove is provided along the insertion direction of the cell. The adhesive groove has a first dispensing port, which is exposed on the side of the cell support where the assembly groove is located.

[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. That is, the adhesive covers the side wall of the battery cell that is not aligned with the slot. This not only helps to smooth out the outer diameter tolerance of battery cells of the same specification from different manufacturers, but also helps to increase the bonding area between the battery cell and the battery cell bracket, thereby improving the stability of the battery cell fixation and reducing the risk of relative movement between the battery cell and the battery cell bracket.

[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 ends of the battery cell (specifically the first end and / 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 battery depletion.

[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 one end of the battery cell (specifically the first end or the second end) 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 subsequent terminals and the busbars 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, the depth of the first overflow groove along the insertion direction of the battery cell is H1, where H1 ≥ 0.25 mm.

[0025] By limiting the depth of the first overflow groove to greater than or equal to 0.25mm, it is beneficial to reduce the risk of adhesive flowing into the battery cell terminals due to the excessive depth of the first overflow groove, which could cause poor welding between the terminals and the busbar. This can better improve the stability and installability of the battery pack.

[0026] In some embodiments of this application, a second overflow groove is recessed in the sidewall along the insertion direction perpendicular to the battery cell, and the second overflow groove communicates with the glue groove. The second overflow groove is configured to accommodate excess adhesive when the first end or the second end is inserted into the assembly groove.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] In some embodiments of this application, the battery pack further includes a fixing fixture with a fixing groove. One of the first end and the second end is inserted into the fixing groove, and the other is inserted into the assembly groove.

[0037] By setting up a fixing fixture, it is not only helpful to ensure that the battery cell is accurately inserted into the assembly slot, reducing the risk of the adhesive in the slot being scraped off due to the battery cell shifting, but also helps to improve the efficiency of battery cell installation.

[0038] In some embodiments of this application, the battery pack further includes a replaceable gasket, which is installed in a mounting slot and configured to abut against a first end or a second end when the battery cell is inserted into the mounting slot.

[0039] When one end of the battery cell is inserted into the assembly slot, technicians can adjust the welding ends of battery cells of different heights to be on the same plane by changing shims of different thicknesses. This helps to improve the versatility of the battery cell bracket and adapt it to battery cells of different heights.

[0040] One embodiment of this application provides an energy storage power supply. The energy storage power supply includes a housing and a battery pack as described in any embodiment, the battery pack being disposed within the housing.

[0041] In the aforementioned energy storage power supply, the battery pack described in any of the above embodiments is used. The sidewall of the assembly slot of the cell bracket is provided with multiple adhesive grooves, and these grooves contain adhesive. When a cell is inserted into the assembly slot of the cell bracket, the adhesive can cover the sidewall of the cell to fix the cell to the cell bracket. Firstly, the adhesive can smooth out the outer diameter tolerances of cells of the same specification from different manufacturers, which helps improve the versatility of the cell bracket, allowing the same cell bracket to be compatible with cells of the same specification from different manufacturers. Technicians do not need to remake the cell bracket, reducing production costs. Secondly, it helps reduce the risk of relative movement between the cell and the cell bracket, reducing the risk of vibration failure in the battery pack, improving the reliability of the battery pack, and thus improving the reliability of the energy storage power supply. Attached Figure Description

[0042] 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.

[0043] Figure 1 This application provides a schematic diagram of the battery pack structure when the cell support is located at the first end of the cell, according to one embodiment of the present application.

[0044] Figure 2 A schematic diagram of the battery pack structure is provided for one embodiment of this application, showing the battery cell support located at the second end of the battery cell;

[0045] Figure 3 A schematic diagram of the battery cell structure is provided for one embodiment of this application;

[0046] Figure 4 for Figure 2 The diagram shows the structural diagram of the cell support structure in the battery pack.

[0047] Figure 5 for Figure 4 Enlarged view of section V in the middle;

[0048] Figure 6 for Figure 2 The diagram shows the cross-sectional structure of the battery pack after omitting the fixing fixture, cut along line IV-IV.

[0049] Figure 7 for Figure 4 A schematic diagram of the cross-sectional structure of the battery cell support after being cut along line VI-VI;

[0050] Figure 8 for Figure 7 Enlarged view of section VIII;

[0051] Figure 9 A schematic diagram of the structure of the glue tank and the first glue inlet in one embodiment of this application is provided;

[0052] Figure 10 A 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.

[0053] Figure 11 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.

[0054] Figure 12 for Figure 6 Enlarged view of section XII;

[0055] Figure 13 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.

[0056] Figure 14 for Figure 1 The diagram shows the exploded structure of the battery pack.

[0057] Figure 15 A schematic diagram of the structure of an energy storage power supply is provided for one embodiment of this application;

[0058] Figure 16 for Figure 15 The diagram shows the exploded structure of the energy storage power source.

[0059] Explanation of key component symbols:

[0060] 100. Energy storage power supply; 10. Battery pack; 20. Outer shell; 11. Battery cell; 12. Battery cell bracket; 13. Fixing fixture; 14. Gasket; 111. First end; 112. Second end; 113. Welding area; 114. Explosion-proof valve; 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; 131. Fixing groove; 1221. Glue groove; 1222. First glue inlet; 1271. Glue blocking protrusion; 1272. Clearance hole; 1273. Positioning part.

[0061] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0062] 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.

[0063] 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.

[0064] In related technologies, battery brackets are typically used to limit and fix the battery to ensure its stability. However, even for the same model of battery cell, the outer diameter tolerance may vary depending on the manufacturer. Existing battery cell brackets are highly specific; one type of bracket can only be used with cells from one manufacturer. When the manufacturer changes, the original bracket becomes unusable, necessitating the manufacture of a new bracket and increasing costs.

[0065] For example, the existing cell holder is suitable for 14500 lithium batteries from manufacturer A. Now, the cells are being replaced with 14500 lithium batteries from manufacturer B. The existing cell holder will no longer be usable, and a new cell holder suitable for 14500 lithium batteries from manufacturer B needs to be manufactured.

[0066] In addition, in the existing technology, it is difficult to achieve relative stillness between the battery and the bracket. Relative movement will occur between the battery and the bracket, which will cause the battery to fail due to vibration in some vibrating situations, reducing the reliability of the battery.

[0067] 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.

[0068] 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.

[0069] One embodiment of this application provides a battery pack. The battery pack includes a battery cell 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 has a mounting groove, into which the first end or the second end is inserted. The mounting groove includes a sidewall with an adhesive groove. The adhesive groove is configured to receive adhesive so that the portion of the battery cell inserted into the mounting groove is fixed within the mounting groove by the adhesive.

[0070] In the aforementioned battery pack, when the first or second end of the battery cell is inserted into the assembly slot, adhesive located on the sidewall of the assembly slot covers the outer wall of the battery cell to secure it to the cell support. This serves two purposes: firstly, the adhesive can smooth out the outer diameter tolerances of batteries of the same specification from different manufacturers, improving the versatility of the cell support and allowing it to be compatible with batteries of the same specification from different manufacturers. Technicians do not need to remake the cell support, reducing production costs. Secondly, it reduces the risk of relative movement between the battery cell and the cell support, lowering the risk of vibration-induced failure in the battery pack and improving its reliability.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] Please refer to the following: Figures 4 to 6 In some embodiments, the cell support 12 is provided with an assembly groove 121, and the first end 111 or the second end 112 is inserted into the assembly groove 121. By providing the assembly groove 121, the initial positioning of the cell 11 can be achieved, which is beneficial for subsequent fixing of the cell 11 and welding of the busbar.

[0075] In some embodiments, the assembly groove 121 includes a sidewall 122, and the sidewall 122 is provided with an adhesive groove 1221. The adhesive groove 1221 is configured to receive adhesive (not shown) so that the portion of the battery cell 11 inserted into the assembly groove 121 (specifically the first end 111 or the second end 112) is fixed in the assembly groove 121 by the adhesive.

[0076] Understandably, when the first end 111 of the battery cell 11 is inserted into the assembly groove 121, the adhesive in the adhesive groove 1221 covers the side wall 122 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.

[0077] When the second end 112 of the battery cell 11 is inserted into the assembly groove 121, the adhesive in the glue groove 1221 covers the side wall 122 of the second end 112 of the battery cell 11, so as to achieve a fixed connection between the second end 112 of the battery cell 11 and the battery cell bracket 12.

[0078] The battery pack 10 provided in this application has an adhesive groove 1221 provided on the side wall 122 of the cell holder 12, and adhesive is placed in the adhesive groove 1221. On the one hand, the adhesive can smooth out the outer diameter tolerance of the cells 11 of the same specification from different manufacturers, which is beneficial to improving the versatility of the cell holder 12, so that the same cell holder 12 can be compatible with cells 11 of the same specification from different manufacturers. Technicians do not need to remake the cell 11 and cell holder 12, thus reducing production costs. For example, when the outer diameter tolerance of the cell 11 of the same specification increases or decreases, technicians only need to increase or decrease the amount of adhesive to fill the difference in outer diameter tolerance.

[0079] On the other hand, it can achieve bonding and fixation between one end of the cell 11 (specifically the first end 111 or the second end 112) and the cell support 12, which helps to reduce the risk of relative movement between the cell 11 and the cell support 12, thereby reducing the risk of vibration failure of the battery pack 10 and improving the reliability of the battery pack 10.

[0080] 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.

[0081] 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 end of the battery cell 11 is then inserted into the assembly groove 121 so that the adhesive covers the side wall 122 of the end of the battery cell 11, thereby achieving the bonding and fixation between one end of the battery cell 11 and the battery cell support 12.

[0082] In some embodiments, one end of the battery cell 11 may be inserted into the assembly groove 121 first. After the battery cell 11 is inserted into the assembly groove 121, adhesive is poured into the glue tank 1221 by the glue pouring equipment so that the adhesive covers the side wall 122 of one end of the battery cell 11, thereby achieving the bonding and fixation between one end of the battery cell 11 and the battery cell support 12.

[0083] 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.

[0084] Please refer to the following: Figure 7 and Figure 8 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.

[0085] 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.

[0086] 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.

[0087] 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 one end of the battery cell 11 into the assembly slot 121.

[0088] 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.

[0089] Please see Figure 9 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.

[0090] For example, the first dispensing port 1222 is funnel-shaped. The wide end of the first dispensing port 1222 is exposed at the bottom of the cell support 12, and the narrow end of the first dispensing port 1222 is connected to the glue tank 1221. When dispensing glue to the cell support 12, the glue dispensing part of the dispensing device is inserted into the wide end of the first dispensing port 1222 and the adhesive is injected. The adhesive flows from the wide end of the first dispensing port 1222 to the narrow end of the first dispensing port 1222 and flows into the glue tank 1221, thus realizing the dispensing of glue into the glue tank 1221.

[0091] Please refer to the following: Figure 10 and Figure 11 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.

[0092] In some embodiments, there is one second dispensing port 123. The cell 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.

[0093] 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 through one glue-filling port. This helps to reduce the number of second glue-filling holes on the cell bracket 12 while ensuring the glue-filling efficiency of the cell bracket 12, thereby improving the overall aesthetics of the cell bracket 12.

[0094] 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.

[0095] Please refer to the following: Figure 6 and Figure 12 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 one end of the cell 11 is inserted into the assembly groove 121.

[0096] Understandably, during the process of inserting one end of the battery cell 11 into the assembly groove 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 side wall 122 of the battery cell 11 that is not aligned with the glue groove 1221.

[0097] By filling the gap 126, it is not only beneficial to better smooth out the outer diameter tolerance of the battery cell 11 between different manufacturers of the same specification, but also beneficial to increase the bonding area between the battery cell 11 and the battery cell bracket 12, thereby 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.

[0098] It is worth noting that the sidewall 122 of the battery cell 11 that is not aligned with the adhesive groove 1221 specifically refers to the outer wall of the battery cell 11 that is aligned with the sidewall 122 of the assembly groove 121. In other words, the sidewall 122 of the battery cell 11 that is not aligned with the adhesive groove 1221 specifically refers to the portion where the projection of the battery cell 11 and the sidewall 122 along the insertion direction perpendicular to the battery cell 11 overlaps.

[0099] 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 side wall 122 of the battery cell 11 that is not aligned with the adhesive tank 1221.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] Please refer to the following: Figure 1 , Figure 2 and Figure 6 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 one end of 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.

[0104] 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.

[0105] 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.

[0106] Please refer to the following: Figure 4 , Figure 5 and Figure 12In 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.

[0107] Understandably, when one end of the battery cell 11 is inserted into the assembly slot 121, the bottom wall 127 can stop the end of the battery cell 11 (specifically the first end 111 and / or 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 misoperation by technicians, resulting in battery depletion.

[0108] Please refer to the following: Figure 5 , Figure 8 and Figure 12 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.

[0109] Understandably, when one end of 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 glue tank 1221. The scraped adhesive, driven by the battery cell 11, moves and is contained in the first overflow glue tank 128. It is worth noting that when glue is poured into the glue tank 1221 by the glue dispensing equipment, any excess adhesive injected by the glue dispensing equipment will also flow into and be contained in the first overflow glue tank 128.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] Please see Figure 13 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.

[0117] When one end of 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.

[0118] Please refer to the following: Figure 3 and Figure 12 In 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.

[0119] Understandably, when one end of the battery cell 11 is inserted into the assembly slot 121, the adhesive-retaining protrusion 1271 always abuts against the battery cell 11 outside 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.

[0120] Please refer to the following: Figure 3 and Figure 12 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.

[0121] 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.

[0122] Please refer to the following: Figure 4 , Figure 5 and Figure 12 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.

[0123] 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 one end of the battery cell 11 is inserted into the assembly groove 121, the terminal post of the battery cell 11 is engaged in the notch.

[0124] 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.

[0125] Please refer to the following: Figure 1 , Figure 2 and Figure 14 In some embodiments, the battery pack 10 further includes a fixing fixture 13, which has a fixing groove 131. One of the first end 111 and the second end 112 is inserted into the fixing groove 131, and the other is inserted into the assembly groove 121.

[0126] The setting of the fixing fixture 13 not only helps to ensure that one end of the battery cell 11 is accurately inserted into the assembly slot 121, reducing the risk of adhesive being scraped off in the adhesive slot 1221 due to the displacement of the battery cell 11, but also helps to improve the efficiency of battery cell 11 installation.

[0127] In some embodiments, the battery pack 10 further includes a replaceable pad 14, which is installed in a mounting slot 131 and is configured to abut against a first end 111 or a second end 112 when the battery cell 11 is inserted into the mounting slot 131.

[0128] Understandably, when one end of the battery cell 11 is inserted into the fixing slot 131, technicians can adjust the battery cells 11 of different heights to be on the same plane by replacing the shims 14 of different thicknesses. This helps to improve the versatility of the battery cell 11 and battery cell 11 bracket 12 to adapt to battery cells 11 of different heights.

[0129] For example, there are three battery cells 11, defined as a first battery cell (not shown), a second battery cell (not shown), and a third battery cell (not shown). The fixing fixture 13 has a first fixing groove (not shown), a second fixing groove (not shown), and a third fixing groove (not shown). There are two gaskets 14, defined as a first gasket (not shown) and a second gasket (not shown).

[0130] The diameter of the first, second, and third battery cells is 14mm. The length of the first battery cell is 50mm, the length of the second battery cell is 60mm, and the length of the third battery cell is 70mm. The thickness of the first gasket is 20mm, and the thickness of the second gasket is 10mm.

[0131] When assembling the battery cell 11 and the battery cell bracket 12, the technicians first install the first gasket in the first fixing slot and the second gasket in the second fixing slot. Then, the first battery cell, the second battery cell, and the third battery cell are respectively assembled into the first fixing slot, the second fixing slot, and the third fixing slot.

[0132] At this point, the sum of the length of the first battery cell and the thickness of the first gasket is equal to the length of the third battery cell, and the sum of the length of the second battery cell and the thickness of the second gasket is equal to the length of the third battery cell. That is, the end faces of the first, second, and third battery cells (specifically, the end facing away from the fixing fixture) are on the same plane, which is beneficial for the subsequent assembly of the battery cell bracket 12 and the welding of the busbar.

[0133] Please refer to the following: Figure 15 and Figure 16 One embodiment of this application also provides an energy storage power supply 100. The energy storage power supply 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.

[0134] 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 side wall 122 of the assembly groove 121 of the cell support 12 is provided with an adhesive groove 1221, and the adhesive groove 1221 contains adhesive.

[0135] When the battery cell 11 is inserted into the assembly slot 121 of the battery cell bracket 12, the adhesive can adhere to the side wall 122 of the battery cell 11 to fix the battery cell 11 and the battery cell bracket 12. This 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, improve the reliability of the battery pack 10, and thus improve the reliability of the energy storage power supply 100.

[0136] In addition, the cell bracket 12 can use adhesive to smooth out the outer diameter tolerance of the cell 11 of the same specification from different manufacturers, which helps to improve the versatility of the cell bracket 12. This allows the same cell bracket 12 to be compatible with the same specification of cell 11 from different manufacturers. Technicians do not need to remake the cell 11 and cell bracket 12, thus reducing production costs.

[0137] 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.

[0138] 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.

[0139] 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, include: A battery cell has a first end and a second end, the first end and the second end being disposed opposite to each other; A battery cell support is provided with an assembly slot, and a first end or a second end is inserted into the assembly slot; the assembly slot includes a side wall, and the side wall is provided with an adhesive groove, which is configured to accommodate adhesive so that the portion of the battery cell inserted into the assembly slot is fixed in the assembly slot by the adhesive.

2. The battery pack of claim 1, wherein, The assembly groove is formed at the bottom of the cell bracket, and the glue groove is arranged along the insertion direction of the cell; the glue groove has a first glue inlet, which is exposed on the side of the cell bracket where the assembly groove is located.

3. The battery pack of claim 2, wherein, Along the insertion direction perpendicular to the battery cell, the width of the first glue inlet is greater than the width of the glue groove.

4. The battery pack of claim 1, wherein, The bottom of the cell support is provided with a second glue inlet, which is connected to the glue tank.

5. The battery pack of claim 4, wherein, The number of the second glue-filling port is one, and the cell bracket is provided with a glue-flowing channel communicating with the second glue-filling port, and the glue-flowing channel communicating with the glue tank.

6. The battery pack of claim 5, wherein, Within the adhesive flow channel, the battery holder is provided with an adhesive guiding slope, which is configured to guide the adhesive into the adhesive groove.

7. The battery pack of claim 1, wherein, 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 the adhesive in the adhesive groove to flow and fill when the battery cell is inserted into the assembly groove.

8. The battery pack of claim 7, wherein, Along the insertion direction perpendicular to the battery cell, the width of the filling gap ranges from 0.1mm to 0.3mm.

9. The battery pack of any one of claims 1-8, wherein, Along the insertion direction perpendicular to the battery cell, the depth of the adhesive groove is D, where D ≥ 0.6 mm.

10. The battery pack of any one of claims 1-8, wherein, The assembly slot also includes a bottom wall, which is 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 block either the first end or the second end when the battery cell is inserted into the assembly slot.

11. The battery pack of claim 10, wherein, The bottom wall is provided with a glue-blocking protrusion ring along the extension direction of the side wall. The glue-blocking protrusion ring, the side wall and the bottom wall together form a first glue overflow groove. The first glue overflow groove is connected to the glue groove. The first glue overflow groove is configured to accommodate excess adhesive when the battery cell is inserted into the assembly groove.

12. The battery pack of claim 11, wherein, The adhesive-blocking protrusion is located on the side of the sidewall facing the battery cell.

13. The battery pack of claim 11, wherein, Along the insertion direction of the battery cell, the depth of the first overflow groove is H1, where H1 ≥ 0.25 mm.

14. The battery pack of claim 10, wherein, Along the insertion direction perpendicular to the battery cell, the side wall is recessed with a second overflow groove, which communicates with the glue groove. When the second overflow groove is configured at the first end or the second end is inserted into the assembly groove, it accommodates excess adhesive.

15. The battery pack of any one of claims 1-8, wherein, Along the insertion direction of the battery cell, the height of the adhesive groove is H2, and the height of the battery cell is H3, where H2 ≥ 1 / 3 * H3.

16. The battery pack of claim 11, wherein, The battery cell has a welding area located at the first end or the second end; the first overflow groove is annular, and when viewed along the insertion direction of the battery cell, the welding area is located in the inner ring of the first overflow groove and is separate from the first overflow groove.

17. The battery pack of claim 16, wherein, The battery further comprises an explosion-proof valve installed at the first end and / or the second end; the bottom wall is provided with a relief hole, a projection of the relief hole along a plug-in direction of the battery cell covering the explosion-proof valve.

18. The battery pack of claim 16, wherein, The bottom wall is further provided with a positioning portion configured to cooperate with a pole of the battery cell when the battery cell is plugged into the assembly groove.

19. The battery pack of any one of claims 1-8, wherein, The battery pack further comprises a fixing jig provided with a fixing groove, one of the first end and the second end being plugged into the fixing groove, and the other being plugged into the assembly groove.

20. The battery pack of claim 19, wherein, The battery pack further comprises a replaceable gasket installed in the fixing groove, the gasket being configured to abut against the first end or the second end when the battery cell is plugged into the fixing groove.

21. An energy storage power supply comprising a housing, characterized by, The energy storage power supply further comprises the battery pack of any one of claims 1 to 20, the battery pack being arranged in the housing.

Images