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 core is provided with a first end and a second end which are oppositely arranged; the battery cell support is provided with an assembling groove, the battery cell is arranged in the assembling groove in a penetrating mode, and the battery cell support is located between the first end and the second end. 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, so that the part, inserted into the assembling groove, of the battery cell is fixed in the assembling groove through the bonding glue. According to the battery pack, the risk of relative movement between the battery cell and the battery cell bracket is reduced, so that the risk of vibration failure of the battery pack is reduced, and the structural reliability of the battery pack arranged in the battery cell bracket is improved. Meanwhile, the battery cell bracket is positioned between the first end and the second end, namely, the end part of the battery cell is exposed out of the battery cell bracket, so that a technician can quickly weld the busbar on the pole at the end part of the battery cell, and the assembly efficiency 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] In order to ensure the stability of the battery pack, the technical personnel usually uses the cell support to limit and fix the cell. However, in the related art, it is difficult to achieve relative static between the cell and the cell support, and problems such as vibration failure are prone to occur, and the cell support is generally located at the end of the cell, which is not conducive to the welding of the cell pole. UTILITARIAN CONTENT

[0003] Therefore, the present application provides a battery pack and an energy storage power supply to solve the technical problems that the relative movement between the existing cell and the cell support is prone to occur and the cell pole is difficult to weld.

[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 arranged oppositely. The cell support is provided with an assembly slot, the cell is arranged in the assembly slot, and the cell support is located between the first end and the second end. The assembly slot comprises a side wall, and the side wall is provided with a glue groove configured to accommodate adhesive to fix the part of the cell inserted into the assembly slot in the assembly slot by the adhesive.

[0005] In the above battery pack, when the cell is arranged in the assembly slot of the cell support, the adhesive in the glue groove of the cell support is wrapped on the outer wall of the cell to fix the cell and the cell support, which is conducive to reducing the risk of relative movement between the cell and the cell support, thereby reducing the risk of vibration failure of the battery pack and improving the structural reliability of the battery pack arranged in the cell support. At the same time, since the cell support is located between the first end and the second end, that is, the end of the cell (specifically the first end and the second end) is exposed to the cell support, the technical personnel can quickly weld the busbar on the pole of the end of the cell, which is conducive to improving the assembly efficiency of the battery pack. In this way, only one cell support is needed to fix each cell, avoiding the arrangement of cell supports at both ends of the cell, thereby saving the manufacturing cost of the battery pack and better achieving the weight reduction design of the battery pack.

[0006] In some embodiments of the present application, the assembly slot 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 where the assembly slot is formed.

[0007] When the glue tank is filled with glue, the technician only needs to insert the glue filling equipment (such as a glue gun, a glue pipe, etc.) into the first glue filling port, which is simple and convenient. At the same time, since the glue tank is arranged along the insertion direction of the battery cell, the technician does not need to adjust the position of the battery cell support to realize the assembly of the battery cell and the glue filling operation, which is beneficial to reduce the operation steps of the technician and improve the efficiency.

[0008] In some embodiments of the present application, the width of the first glue filling 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 glue filling port to be greater than the width of the glue tank, it is beneficial to insert the glue filling equipment into the first glue filling port for glue filling operation, thereby improving the convenience of glue filling operation.

[0009] In some embodiments of the present application, the bottom of the battery cell support is provided with a second glue filling port, and the second glue filling port is in communication with the glue tank. When the glue tank is filled with glue, the technician can fill the glue tank through the first glue filling port and the second glue filling port at the same time, which is beneficial to improve the glue filling efficiency of the battery cell support.

[0010] In some embodiments of the present application, the number of second glue filling ports is one. The battery cell support is provided with a glue flow channel in communication with the second glue filling port, and the glue flow channel is in communication with the glue tank.

[0011] Through the cooperation of the second glue filling port and the glue flow channel, the battery cell support can realize one glue filling port filling glue into multiple glue tanks at the same time, which is beneficial to reduce the number of second glue filling holes on the battery cell support while ensuring the glue filling efficiency of the battery cell support, and improve the overall aesthetics of the battery cell support.

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

[0013] Through the setting of the glue guide slope, it is not only beneficial to guide the adhesive glue to flow into the glue tank to ensure that each glue tank uniformly contains adhesive glue, but also beneficial to reduce the flow speed of the adhesive glue to make the adhesive glue flow into the corresponding glue tank gently, thereby reducing the risk of adhesive glue splashing due to the too fast flow speed of the adhesive glue.

[0014] In some embodiments of the present application, a filling gap is formed between the side wall and the outer wall of the battery cell, and the filling gap is in communication with the glue tank. The filling gap is configured to flow and fill the adhesive glue in the glue tank when the battery cell is inserted into the assembly groove.

[0015] During the process of inserting the battery cell into the assembly groove, the adhesive glue in the glue tank can overflow and fill into the filling gap under the extrusion action of the battery cell, that is, the adhesive glue covers the outer wall of the battery cell which is not opposite to the glue tank, which is beneficial to improve the bonding area between the battery cell and the battery cell support, thereby improving the stability of the fixed battery cell and reducing the risk of relative movement between the battery cell and the battery cell support.

[0016] In some embodiments of the present application, the width of the filling gap is in the range of 0.1 mm to 0.3 mm along the direction perpendicular to the insertion direction of the battery cell.

[0017] By limiting the width of the filling gap to be in the range of 0.1 mm to 0.3 mm, on the one hand, it is beneficial to ensure the smooth insertion of the battery cell into the assembly slot and reduce the risk that the battery cell cannot be installed or is stuck during installation due to the filling gap being too small. On the other hand, it is beneficial to cover the outer wall of the battery cell with a thick enough adhesive layer to improve the bonding strength between the battery cell and the battery cell support, preferably to improve the stability of the battery cell fixation, and reduce the risk of relative movement between the battery cell and the battery cell support.

[0018] In some embodiments of the present application, the side wall is recessed with a glue overflow groove along the direction perpendicular to the insertion direction of the battery cell, the glue overflow groove is in communication with the glue groove, and the glue overflow groove is configured to accommodate excess adhesive when the battery cell is inserted into the assembly slot.

[0019] By providing the glue overflow groove, excess adhesive can be accommodated when the battery cell is inserted into the assembly slot, which is beneficial to reduce the risk of subsequent poor welding of the pole and the busbar due to the adhesive flowing into the pole, and to improve the stability and installability of the battery pack.

[0020] In some embodiments of the present application, the depth of the glue groove is D, and D≥0.6 mm along the direction perpendicular to the insertion direction of the battery cell. By limiting the depth of the glue groove to be greater than or equal to 0.6 mm, it is beneficial to ensure that the adhesive is effectively accommodated in the glue groove and reduce the risk that the adhesive flows out and contaminates the battery cell support due to the depth of the glue groove being too small.

[0021] In some embodiments of the present application, the height of the glue groove is H2, and the height of the battery cell is H3, and H2≥1 / 3*H3 along the insertion direction of the battery cell.

[0022] By limiting the height of the glue groove to be greater than or equal to 1 / 3 of the height of the battery cell, it is beneficial to ensure that the battery cell support effectively binds the battery cell and reduce the risk that the battery cell and the battery cell support still move relative to each other due to the height of the adhesive fixation between the battery cell support and the battery cell being insufficient, and preferably to improve the stability of the battery pack.

[0023] In some embodiments of the present application, the battery pack further comprises a fixing jig, and the fixing jig is provided with a fixing slot, and the first end and the second end are inserted into the fixing slot. By providing the fixing jig, it is not only beneficial to ensure that the battery cell is accurately inserted into the assembly slot and reduce the risk that the adhesive in the glue groove is scraped off due to the battery cell being offset, but also helps to improve the efficiency of the battery cell installation.

[0024] An embodiment of the present application also provides a storage power supply. The storage power supply comprises a shell and a battery pack as described in any embodiment, and the battery pack is arranged in the shell.

[0025] 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 support is provided with multiple adhesive grooves, and these grooves contain adhesive. When the cell is inserted into the assembly slot of the cell support, the adhesive located in the adhesive grooves of the cell support covers the outer wall of the cell, thereby fixing the cell to the cell support. This helps reduce the risk of relative movement between the cell and the cell support, thus reducing the risk of vibration failure of the battery pack, improving the structural reliability of the battery pack within the cell support, and ultimately improving the reliability of the energy storage power supply. Simultaneously, since the cell support is located between the first and second ends, that is, the ends of the cell (specifically the first and second ends) are exposed within the cell support, technicians can quickly weld the busbar to the terminal post at the end of the cell, which helps improve the assembly efficiency of the battery pack. Attached Figure Description

[0026] 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.

[0027] Figure 1 A schematic diagram of the battery pack structure is provided for one embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows the battery pack without the fixing fixture.

[0029] Figure 3 A schematic diagram of the battery cell structure is provided for one embodiment of this application;

[0030] Figure 4 for Figure 1 The diagram shows the structural diagram of the cell support structure in the battery pack.

[0031] Figure 5 for Figure 4 A magnified view of section V;

[0032] Figure 6 A schematic diagram of the structure of the glue tank and the first glue inlet in one embodiment of this application is provided;

[0033] Figure 7 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.

[0034] Figure 8 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.

[0035] Figure 9 for Figure 1 The diagram shows the exploded structure of the battery pack.

[0036] Figure 10 A schematic diagram of the structure of an energy storage power supply is provided for one embodiment of this application;

[0037] Figure 11 for Figure 10 The diagram shows the exploded structure of the energy storage power source.

[0038] Explanation of key component symbols:

[0039] 1000, Energy storage power supply; 100, Battery pack; 200, Outer shell; 10, Battery cell; 11, First end; 12, Second end; 20, Battery cell bracket; 21, Assembly slot; 22, Side wall; 23, Second glue inlet; 24, Glue flow channel; 25, Glue guiding slope; 26, Glue overflow groove; 30, Fixing fixture; 31, Fixing groove; 221, Glue groove; 222, First glue inlet.

[0040] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0041] 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.

[0042] 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.

[0043] To ensure the stability of the battery pack, technicians typically use cell supports to limit and fix the cells. However, in these technologies, it is difficult to achieve relative stillness between the cells and the cell supports; relative movement occurs between the battery and the supports. This can lead to vibration failure in some vibrating environments, reducing battery reliability.

[0044] 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.

[0045] 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.

[0046] In addition, in related technologies, the cell support is generally located at the end of the cell, which is not conducive to the welding of the cell terminals.

[0047] 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 disposed opposite to each other. The battery cell support has a mounting groove, through which the battery cell passes, and the battery cell support is located between the first end and the second end. The mounting groove includes a sidewall with an adhesive groove configured to accommodate adhesive, such that the portion of the battery cell inserted into the mounting groove is fixed within the mounting groove by the adhesive.

[0048] In the aforementioned battery pack, when the battery cells are inserted into the assembly slots of the cell support, the adhesive within the adhesive grooves of the cell support coats the outer wall of the battery cells, thus securing the cells to the support. This reduces the risk of relative movement between the cells and the support, thereby lowering the risk of vibration-induced failure in the battery pack and improving the structural reliability of the battery pack within the cell support. Furthermore, since the cell support is located between the first and second ends—that is, the ends of the cells (specifically the first and second ends) are exposed within the cell support—technicians can quickly weld the busbars to the terminals at the cell ends, improving the assembly efficiency of the battery pack. Additionally, the aforementioned battery pack requires only one cell support to secure each cell, avoiding the need for cell supports at both ends of the cells, thus saving manufacturing costs and achieving a better weight reduction design for the battery pack.

[0049] 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.

[0050] Please refer to the following: Figures 1 to 3 One embodiment of this application provides a battery pack 100. The battery pack 100 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 applied to outdoor recreational and work scenarios, or to home emergency backup power scenarios, etc.

[0051] Specifically, the battery pack 100 includes a battery cell 10 and a battery cell support 20. The battery cell 10 has a first end 11 and a second end 12, which are arranged opposite to each other. It is worth noting that the battery cell 10 can be cylindrical, or it can be a square or other shapes of battery cell 1011. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0052] Please refer to the following: Figure 4 and Figure 5In some embodiments, the cell support 20 is provided with an assembly groove 21, through which the cell 10 passes, and the cell support 20 is located between the first end 11 and the second end 12. The assembly groove 21 includes a side wall 22, and the side wall 22 is provided with an adhesive groove 221, which is configured to accommodate adhesive (also known as structural adhesive, not shown in the figure) so that the portion of the cell 10 inserted into the assembly groove 21 is fixed in the assembly groove 21 by the adhesive.

[0053] Understandably, when assembling the battery pack 100, the battery cell 10 passes through the assembly groove 21 of the battery cell bracket 20. The adhesive in the adhesive groove 221 in the battery cell bracket 20 covers the outer wall of the battery cell 10 to fix the battery cell 10 to the battery cell bracket 20. The first end 11 and the second end 12 of the battery cell 10 are both outside the battery cell bracket 20.

[0054] On the one hand, the battery pack 100 provided in this application provides a glue groove 221 on the side wall 22 of the cell support 20 and fills the glue groove 221 with adhesive, which helps to reduce the risk of relative movement between the cell 10 and the cell support 20, thereby reducing the risk of vibration failure of the battery pack 100 and improving the structural reliability of the battery pack 100 located in the cell support 20.

[0055] On the other hand, since the cell support 20 is located between the first end 11 and the second end 12, that is, the ends of the cell 10 (specifically the first end 11 and the second end 12) are exposed in the cell support 20, technicians can quickly weld the busbar to the terminal post at the end of the cell 10, which helps to improve the assembly efficiency of the battery pack 100.

[0056] In addition, the battery pack 100 provided in this application only requires one cell bracket 20 to fix each cell 10, avoiding the need to set cell brackets 20 at both ends of the cell 10, thereby saving the manufacturing cost of the battery pack 100 and better realizing the weight reduction design of the battery pack 100.

[0057] It is worth noting that this application does not limit the order of glue filling in the glue tank 221 and insertion of the battery cell 10, and those skilled in the art can choose according to the actual situation.

[0058] In some embodiments, adhesive can be first poured into the glue tank 221 using a glue dispensing device (e.g., glue gun, glue tube, etc.). After the adhesive is contained in the glue tank 221, the battery cell 10 is then inserted into the assembly groove 21 so that the adhesive covers the outer wall of the end of the battery cell 10, thereby achieving the bonding and fixation between the battery cell 10 and the battery cell support 20.

[0059] In some embodiments, the battery cell 10 may be inserted into the assembly groove 21 first. After the battery cell 10 is inserted into the assembly groove 21, adhesive is injected into the glue tank 221 through the glue dispensing equipment so that the adhesive covers the outer wall of the battery cell 10, thereby achieving the bonding and fixation between the battery cell 10 and the battery cell support 20.

[0060] 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.

[0061] Please refer to the following: Figure 4 and Figure 5 In some embodiments, the assembly groove 21 is formed at the bottom of the cell support 20. The glue groove 221 is provided along the insertion direction of the cell 10. The glue groove 221 has a first glue inlet 222, which is exposed on the side of the cell support 20 where the assembly groove 21 is provided.

[0062] Understandably, when performing the glue dispensing operation on the glue tank 221, technicians only need to insert the glue dispensing equipment into the first glue dispensing port 222 and inject the adhesive into the glue tank 221, making the operation simple and convenient. Furthermore, since the glue tank 221 is positioned along the insertion direction of the battery cell 10, technicians do not need to adjust the position of the battery cell support 20 to perform the battery cell 10 assembly and glue dispensing operations, which helps reduce the number of steps required by technicians and improves efficiency.

[0063] For example, the technician first inserts the dispensing equipment into the first dispensing port 222 along the insertion direction of the battery cell 10, and injects adhesive into the glue tank 221. After the adhesive is injected, the technician can directly insert the battery cell 10 into the assembly slot 21.

[0064] In other embodiments, the glue groove 221 may not be arranged along the insertion direction of the battery cell 10. This application does not limit this, and those skilled in the art can choose according to the actual situation.

[0065] Please see Figure 6 In some embodiments, the width of the first glue-filling port 222 is greater than the width of the glue tank 221 along the insertion direction perpendicular to the battery cell 10. By setting the width of the first glue-filling port 222 to be greater than the width of the glue tank 221, it is easier for the glue-filling equipment to insert into the first glue-filling port 222 for glue-filling operations, thereby improving the convenience of glue-filling operations.

[0066] For example, the first glue inlet 222 is funnel-shaped. The wide end of the first glue inlet 222 is exposed on the side of the cell support 20 where the assembly groove 21 is provided, and the narrow end of the first glue inlet 222 is connected to the glue tank 221.

[0067] When the cell support 20 is potted, the dispensing part of the potting equipment is inserted into the wide end of the first potting port 222 and adhesive is injected. The adhesive flows from the wide end of the first potting port 222 to the narrow end of the first potting port 222 and flows into the glue tank 221, thus realizing the potting of the glue tank 221.

[0068] Please refer to the following: Figure 7 and Figure 8 In some embodiments, the bottom of the cell support 20 is provided with a second glue inlet 23, which is connected to the glue tank 221. When performing glue filling operation on the glue tank 221, technicians can simultaneously fill the glue tank 221 through the first glue inlet 222 and the second glue inlet 23, which helps to improve the glue filling efficiency of the cell support 20.

[0069] In some embodiments, the number of second dispensing ports 23 is one. The cell support 20 is provided with a dispensing channel 24 communicating with the second dispensing port 23, and the dispensing channel 24 communicating with the glue tank 221. Understandably, when performing a dispensing operation on the glue tank 221, a technician inserts the dispensing equipment into the second dispensing port 23 and injects the adhesive. The adhesive flows along the dispensing channel 24 and into the glue tank 221.

[0070] With the cooperation of the second glue-filling port 23 and the glue-flowing channel 24, the cell bracket 20 can simultaneously fill multiple glue tanks 221 with glue through one glue-filling port. This helps to reduce the number of second glue-filling ports 23 on the cell bracket 20 while ensuring the glue-filling efficiency of the cell bracket 20, and improves the overall aesthetics of the cell bracket 20.

[0071] In some embodiments, within the adhesive flow channel 24, the cell support 20 is provided with an adhesive guiding slope 25, which is configured to guide the adhesive into the adhesive tank 221. The adhesive guiding slope 25 not only facilitates guiding the adhesive into the adhesive tank 221, 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 221 and reducing the risk of adhesive splashing due to excessively fast flow.

[0072] In some embodiments, a filling gap (not shown) is formed between the sidewall 22 and the outer wall of the cell 10, and the filling gap communicates with the adhesive groove 221. The filling gap is configured to allow adhesive to flow and fill in the adhesive groove 221 when the cell 10 is inserted into the assembly groove 21.

[0073] Understandably, during the process of the battery cell 10 being inserted into the assembly groove 21, the adhesive in the glue groove 221 can overflow and fill the filling gap under the squeezing action of the battery cell 10, so that the adhesive covers the outer wall of the battery cell 10 that is not aligned with the glue groove 221.

[0074] By filling the gap, the bonding area between the battery cell 10 and the battery cell support 20 can be increased, thereby improving the stability of the battery cell 10 and reducing the risk of relative movement between the battery cell 10 and the battery cell support 20.

[0075] It is worth noting that the outer wall of the battery cell 10 that is not aligned with the adhesive groove 221 specifically refers to the outer wall of the battery cell 10 that is aligned with the side wall 22 of the assembly groove 21. In other words, the outer wall of the battery cell 10 that is not aligned with the adhesive groove 221 specifically refers to the portion where the projection of the battery cell 10 and the side wall 22 overlaps along the insertion direction perpendicular to the battery cell 10.

[0076] It should also be noted that when assembling the battery cell 10 by first inserting the battery cell 10 and then applying adhesive, the adhesive application equipment injects the adhesive into the adhesive tank 221. The adhesive can still flow and fill the gap, and cover the outer wall of the battery cell 10 that is not aligned with the adhesive tank 221.

[0077] In some embodiments, the width of the filling gap along the insertion direction perpendicular to the cell 10 ranges from 0.1 mm to 0.3 mm. Optionally, the width of the filling gap is 0.2 mm.

[0078] By limiting the width of the filling gap to 0.1mm-0.3mm, firstly, it helps to ensure that the battery cell 10 can be smoothly inserted into the assembly slot 21, reducing the risk that the battery cell 10 cannot be installed or may get stuck during installation due to an excessively small filling gap; secondly, it helps to cover the outer wall of the battery cell 10 with a sufficiently thick adhesive layer, improving the bonding strength between the battery cell 10 and the battery cell bracket 20, thus better improving the stability of the battery cell 10 fixation and reducing the risk of relative movement between the battery cell 10 and the battery cell bracket 20.

[0079] In some embodiments, the depth of the adhesive groove 221 along the insertion direction perpendicular to the cell 10 is D, where D ≥ 0.6 mm. Optionally, the depth of the adhesive groove 221 is D = 0.8 mm. By limiting the depth of the adhesive groove 221 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 221, reducing the risk of adhesive overflow and contamination of the cell support 20 due to the insufficient depth of the adhesive groove 221.

[0080] Please refer to the following: Figure 1 and Figure 2 In some embodiments, along the insertion direction of the battery cell 10, the height of the adhesive groove 221 is H2, and the height of the battery cell 10 is H3, where H2 ≥ 1 / 3 * H3. In other words, the height of the adhesive groove 221 needs to ensure that after the battery cell 10 is fixedly bonded to the battery cell bracket 20, the battery cell bracket 20 can cover 1 / 3 of the battery cell 10.

[0081] By limiting the height of the adhesive groove 221 to be greater than or equal to 1 / 3 of the height of the battery cell 10, it is beneficial to ensure that the battery cell bracket 20 effectively binds the battery cell 10, reducing the risk that the battery cell 10 and the battery cell bracket 20 may still move relative to each other due to insufficient bonding and fixing height between the battery cell bracket 20 and the battery cell 10, thus better improving the stability of the battery pack 100.

[0082] For example, if the model of the battery cell 10 is 14500, that is, the diameter of the battery cell 10 is 14mm and the height is 50mm, then the height of the glue groove 221 is 20mm. In other embodiments, the height of the glue groove 221 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.

[0083] Please refer to the following: Figure 4 and Figure 5 In some embodiments, along the insertion direction perpendicular to the cell 10, the side wall 22 is recessed with an overflow groove 26, which communicates with the glue groove 221. The overflow groove 26 is configured to accommodate excess adhesive when the cell 10 is inserted into the assembly groove 21.

[0084] Understandably, when the battery cell 10 is inserted into the assembly slot 21 of the battery cell bracket 20, the battery cell bracket 20 can accommodate excess adhesive through the overflow groove 26. This helps to reduce the risk of poor welding between the terminal and the busbar caused by adhesive flowing into the terminal of the battery cell 10, thereby improving the stability and installability of the battery pack 100.

[0085] Please refer to the following: Figure 1 and Figure 9 In some embodiments of this application, the battery pack 100 further includes a fixing fixture 30, which has a fixing groove 31, and the first end 11 and the second end 12 are both inserted into the fixing groove 31.

[0086] The setting of the fixing fixture 30 not only helps to ensure that the battery cell 10 is accurately inserted into the assembly slot 21, reducing the risk of adhesive being scraped off in the adhesive slot 221 due to the displacement of the battery cell 10, but also helps to improve the efficiency of battery cell 10 installation.

[0087] Please refer to the following: Figure 10 and Figure 11 An embodiment of this application also provides an energy storage power supply 1000. The energy storage power supply 1000 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.

[0088] The energy storage power supply 1000 includes a housing 200 and a battery pack 100 as described in any embodiment, the battery pack 100 being disposed within the housing 200. The energy storage power supply 1000 provided in this application uses the aforementioned battery pack 100, and the side wall 22 of the assembly slot 21 of the cell support 20 is provided with a plurality of adhesive grooves 221, the adhesive grooves 221 containing adhesive.

[0089] When the battery cell 10 is inserted into the assembly groove 21 of the battery cell bracket 20, the adhesive in the adhesive groove 221 of the battery cell bracket 20 covers the outer wall of the battery cell 10, thereby fixing the battery cell 10 to the battery cell bracket 20. This helps to reduce the risk of relative movement between the battery and the battery cell bracket 20, thereby reducing the risk of battery vibration failure, improving battery reliability, and thus improving the reliability of the energy storage power supply 1000.

[0090] Meanwhile, since the cell support 20 is located between the first end 11 and the second end 12, that is, the ends of the cell 10 (specifically the first end 11 and the second end 12) are exposed on the cell support 20, technicians can quickly weld the busbar to the terminal post at the end of the cell 10, which is beneficial to improving the assembly efficiency of the battery pack 100.

[0091] In some embodiments, the energy storage power supply 1000 further includes a power conversion module (not shown). The power conversion module is housed within a housing 200. The housing 200 protects the power conversion module. The power conversion module is electrically connected to the battery pack 100. The power conversion module is used to control the AC / DC conversion of the output current of the battery pack 100. The energy storage device equipped with the power conversion module can be a small portable power supply, a residential energy storage power supply 1000, an industrial / commercial energy storage power supply 1000, or a containerized energy storage power supply 1000, etc.

[0092] 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.

[0093] 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 battery pack comprises: a battery cell having a first end and a second end arranged oppositely; a battery cell holder provided with an assembly slot, the battery cell is arranged in the assembly slot, and the battery cell holder is located between the first end and the second end; the assembly slot comprises a side wall provided with a glue groove configured to accommodate adhesive, so that the part 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 slot is formed in the bottom of the battery cell holder, and the glue groove is arranged along the insertion direction of the battery cell; the glue groove has a first glue pouring port exposed on one side of the battery cell holder provided with the assembly slot.

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

4. The battery pack of claim 1, wherein, The bottom of the battery cell holder is provided with a second glue pouring port in communication with the glue groove.

5. The battery pack of claim 4, wherein, The number of the second glue pouring port is one, and the battery cell holder is provided with a glue flow channel in communication with the second glue pouring port, and the glue flow channel is in communication with the glue groove.

6. The battery pack of claim 5, wherein, In the glue flow channel, the battery cell holder is provided with a glue guide slope configured to guide the adhesive to flow into the glue groove.

7. The battery pack of any one of claims 1-6, wherein, The side wall and the outer wall of the battery cell form a filling gap in communication with the glue groove; the filling gap is configured to allow the adhesive in the glue groove to flow and fill when the battery cell is arranged in the assembly slot.

8. The battery pack of claim 7, wherein, The width of the filling gap is in the range of 0.1mm-0.3mm along the direction perpendicular to the insertion direction of the battery cell.

9. The battery pack of any one of claims 1-6, wherein, Along the direction perpendicular to the insertion direction of the battery cell, the side wall is recessed with an overflow groove in communication with the glue groove, and the overflow groove is configured to accommodate excess adhesive when the battery cell is inserted into the assembly slot.

10. The battery pack of any one of claims 1-6, wherein, Along the direction perpendicular to the insertion direction of the battery cell, the depth of the glue groove is D, and D≥0.6mm.

11. The battery pack of claim 10, wherein, Along the insertion direction of the battery cell, the height of the glue groove is H2, and the height of the battery cell is H3, H2≥1 / 3*H3.

12. The battery pack of any one of claims 1-6, wherein, The battery pack further comprises a fixing jig provided with a fixing slot, and the first end and the second end are inserted into the fixing slot.

13. 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 12, and the battery pack is arranged in the shell.

Images