Energy storage power supply

Abstract

An energy storage power supply (100). The energy storage power supply (100) comprises a housing (10) and a cover plate (20). An accommodating cavity (40) is formed inside the housing (10), several battery cells (30) are fixed in the accommodating cavity (40), the housing (10) has a mounting wall (50), and through holes (51) are formed in the mounting wall (50), the through holes (51) communicating with the outside of the accommodating cavity (40). The cover plate (20) covers the side of the mounting wall (50) away from the accommodating cavity (40), the cover plate (20) and the housing (10) form an accommodating space (60), and explosion-proof valves (31) of the battery cells (30) communicate with the accommodating space (60) via the through holes (51).

Description

Energy storage power supply

[0001] Priority information

[0002] The present application claims priority to and the benefit of Chinese Patent Application No. 202411125436.3 and 202422005841.3, filed on August 15, 2024, with the State Intellectual Property Office of China, and incorporates by reference the entire disclosure thereof. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage, in particular to an energy storage power supply. BACKGROUND

[0004] The existing energy storage power supply product first fixes a plurality of battery cells into a battery module through two fixed supports and then fixes the battery module on the shell of the energy storage power supply. The energy storage power supply with such a structure has a large overall volume and weight, and the explosion-proof valve of the battery cell is directly communicated with the inside of the energy storage power supply. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an energy storage power supply.

[0006] The energy storage power supply of the present application includes a shell and a cover plate. The shell has an accommodating cavity formed inside, a plurality of battery cells are fixed in the accommodating cavity, the shell has a mounting wall, the mounting wall has a through hole formed therein, and the through hole is in communication with the outside of the accommodating cavity. The cover plate is arranged on the side of the mounting wall away from the accommodating cavity, the cover plate and the shell form a containing space, and the explosion-proof valve of the battery cell is in communication with the containing space through the through hole.

[0007] In some embodiments, the containing space is further provided with a pressure relief channel in communication with the accommodating cavity or the outside of the shell.

[0008] In some embodiments, the mounting wall is provided with a fixing structure for fixing the battery cell on one side of the accommodating cavity, and the through hole is formed in the fixing structure.

[0009] In some embodiments, the electrode of the battery cell is in communication with the containing space through the through hole, and the containing space is provided with a busbar electrically connected with the electrode of the battery cell.

[0010] In some embodiments, the fixing structure is a receiving groove, one end of the battery cell is inserted into the receiving groove, and the through hole is arranged at the bottom of the receiving groove.

[0011] In some embodiments, the energy storage power supply further comprises a fixing support connected to the side wall of the accommodating cavity to fix one end of the battery cell to the fixing structure.

[0012] In some embodiments, the energy storage power supply further comprises an inverter fixed to the fixing support.

[0013] In some embodiments, the periphery of one of the mounting wall and the cover plate is formed with a groove, and the periphery of the other is formed with a protrusion, the protrusion being inserted into the groove.

[0014] In some embodiments, the groove is filled with adhesive.

[0015] In some embodiments, an elastic sealing member is placed in the groove, and the protrusion abuts against the elastic sealing member.

[0016] In some embodiments, the mounting wall is arranged at the bottom of the housing.

[0017] In some embodiments, one of the mounting wall and the cover plate is provided with a support structure, which abuts against the other of the mounting wall and the cover plate.

[0018] In some embodiments, the support structure is a protruding column, one of the mounting wall and the cover plate is provided with the protruding column, and the other of the mounting wall and the cover plate is provided with a glue injection groove filled with adhesive, the protruding column being inserted into the glue injection groove.

[0019] In this way, the accommodation space ensures that there is enough space for the gas or liquid to expand and discharge when the explosion-proof valve of the battery cell needs to release pressure, effectively solving the safety problem of explosion-proof valve leakage in the structure of the energy storage power supply without module, and improving the overall safety and reliability of the energy storage power supply. Additional aspects and advantages of the present application will be partially given in the following description, partially will become apparent from the following description, or will be learned by practicing the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, in which:

[0021] FIG. 1 is a structural schematic diagram of an energy storage power supply according to an embodiment of the present application;

[0022] FIG. 2 is one of exploded schematic diagrams of an energy storage power supply according to an embodiment of the present application;

[0023] FIG. 3 is another of exploded schematic diagrams of an energy storage power supply according to an embodiment of the present application;

[0024] Fig. 4 is a structural schematic diagram of a shell (excluding an electric core) according to an embodiment of the present application;

[0025] Fig. 5 is a partially enlarged structural schematic diagram of A in Fig. 1;

[0026] Fig. 6 is a structural schematic diagram of an electric core according to an embodiment of the present application;

[0027] Fig. 7 is a structural schematic diagram of a shell (including an electric core) according to an embodiment of the present application;

[0028] Fig. 8 is a schematic diagram of a cover covering a shell according to an embodiment of the present application;

[0029] Fig. 9 is a schematic diagram of a cover covering a shell according to an embodiment of the present application;

[0030] Fig. 10 is a sectional view of the energy storage power supply along B-B line in Fig. 1;

[0031] Fig. 11 is a partially enlarged structural schematic diagram of C in Fig. 10.

[0032] Main element reference numerals: energy storage power supply 100, shell 10, cover 20, electric core 30, explosion-proof valve 31, accommodating cavity 40, mounting wall 50, through hole 51, support column 52, accommodating space 60, first busbar 61, second busbar 62, first collecting plate 63, second collecting plate 64, sealing ring 70, accommodating groove 81, fixing support 82, protruding column 91, dispensing groove 92. DETAILED DESCRIPTION

[0033] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplifying the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.

[0038] The present application provides a module-free energy storage power supply 100, which discards the traditional battery module level and directly integrates the battery cell 30 into the shell or frame of the energy storage power supply 100, aiming to improve the energy density of the energy storage system, reduce the weight, reduce the cost, and simplify the manufacturing and assembly process of the energy storage power supply 100.

[0039] The explosion-proof valve 31 is a safety device of the battery cell 30, which is used to open and release the internal pressure in time when excessive pressure is generated inside the battery cell 30, so as to avoid explosion of the battery cell 30 under conditions such as overcharging, external force collision or overheating.

[0040] The module-free energy storage power supply 100 of the present application is tightly connected with the shell at the bottom of the battery cell 30, which limits the pressure relief space of the explosion-proof valve 31 and increases the safety hazard. If the explosion-proof valve 31 does not have enough space for effective pressure relief when it needs to release pressure, the high-pressure gas or liquid inside may accumulate inside the energy storage power supply 100, increasing the risk of battery short circuit, liquid leakage and even explosion.

[0041] Therefore, referring to FIGS. 1, 2, 3, 4 and 5, the present application provides an energy storage power supply 100. The energy storage power supply 100 includes a shell 10 and a cover plate 20. The shell 10 forms an accommodating cavity 40 inside, and a plurality of battery cells 30 are fixed in the accommodating cavity 40. The shell 10 has a mounting wall 50, and the mounting wall 50 forms a through hole 51 which is in communication with the outside of the accommodating cavity 40. The cover plate 20 is arranged on the side of the mounting wall 50 away from the accommodating cavity 40, and the cover plate 20 and the shell 10 form a containing space 60. The explosion-proof valve 31 of the battery cell 30 is in communication with the containing space 60 through the through hole 51.

[0042] In this way, the containing space 60 ensures that there is enough space for gas or liquid to expand and discharge when the explosion-proof valve 31 of the battery cell 30 needs to release pressure, effectively solving the safety problem of the explosion-proof valve 31 in the structure of the module-free energy storage power supply 100, and improving the overall safety and reliability of the energy storage power supply 100.

[0043] Specifically, the energy storage power supply 100 includes a shell 10 and a cover plate 20.

[0044] Please refer to FIG. 4, the housing 10 inside forms a containing cavity 40 containing the battery cell 30, which provides a stable, safe storage environment for the battery cell 30. The housing 10 is also provided with a plurality of pillars 52, which play a supporting role to protect the battery cell 30 and other electronic devices inside the housing from damage due to extrusion.

[0045] The housing 10 has a mounting wall 50, which is formed with a through hole 51. The through hole 51 is designed for the connection of the battery cell 30 with external equipment.

[0046] The cover plate 20 is provided on the side of the mounting wall 50 away from the containing cavity 40, which isolates the mounting wall 50 from the outside, effectively preventing water, dust and other external substances from entering the inside of the housing 10 through the mounting wall 50, and protecting the battery cell 30 and other internal components from contamination and damage.

[0047] The materials of the housing 10 and the cover plate 20 are plastic, which has low density, high strength and good insulation, helping to ensure the safety of the battery cell 30.

[0048] Please refer to FIG. 1 and FIG. 5, the battery cell 30 includes an explosion-proof valve 31, and the mounting wall 50 and the cover plate 20 form a containing space 60, and the explosion-proof valve 31 communicates with the containing space 60 through the through hole 51.

[0049] The containing space 60 is a space surrounded by the mounting wall 50 and the cover plate 20, which is used to ensure that there is enough space for the gas or liquid to expand and discharge when the explosion-proof valve 31 needs to release pressure. The explosion-proof valve 31 is installed on the battery cell 30 and communicates with the containing space 60 through the through hole 51. When the internal pressure of the battery cell 30 exceeds the set value, the explosion-proof valve 31 will automatically open or rupture, allowing the internal gas or liquid to be quickly discharged, thereby reducing the internal pressure of the battery cell 30 and preventing the battery cell 30 from exploding.

[0050] In some embodiments, the containing space 60 is also provided with a pressure relief channel that communicates with the containing cavity 40 or the outside of the housing 10.

[0051] In order to further ensure safety, the containing space 60 is also provided with a pressure relief channel that communicates with the containing cavity 40 or the outside of the housing 10. This channel allows the gas or liquid in the containing space 60 to be smoothly discharged to the outside environment after the explosion-proof valve 31 releases pressure, avoiding accumulation in the containing space 60 and potential danger.

[0052] In some embodiments, the mounting wall 50 is formed with a fixing structure on one side of the containing cavity 40 for fixing the battery cell 30, and the through hole 51 is formed in the fixing structure.

[0053] Specifically, during the transportation and use of the entire energy storage power supply 100, various external factors such as vibration and impact may be encountered, and if the internal components, especially the battery cell 30, are not properly fixed, it is easy to loosen or shift, thereby affecting the normal work and performance of the device. To this end, by designing a reasonable fixing structure and tightly combining the internal components with the shell 10, this situation can be effectively prevented.

[0054] The mounting wall 50 is located on one side of the accommodating cavity 40, which is the outer edge of the shell 10, and a specific fixing structure is designed thereon for fixing the battery cell 30. The fixing structure can be a groove or hole with a certain shape and size formed on the mounting wall 50.

[0055] In some embodiments, the electrodes of the battery cell 30 are in communication with the accommodation space 60 through the through hole 51, and the accommodation space 60 is provided with a bus bar electrically connected with the electrodes of the battery cell 30.

[0056] Specifically, please refer to FIGS. 6 and 7, the battery cell 30 can be a cylindrical battery cell. The battery cell 30 includes a body 31, a first pole 32 and a second pole 33. The first pole 32 and the second pole 33 are respectively arranged at both ends of the length direction of the body 31. The battery cell 30 can be placed vertically in the accommodating cavity 40, and the vertical direction thereof corresponds to the length direction of the body 21.

[0057] The bus bar is a metal strip or plate used to collect and distribute current. The bus bar material can be copper, aluminum, nickel or alloy material. After the bus bar is fixed to the correct position by the work jig, the bus bar can be welded together with the first pole 32 or the second pole 33 of the battery cell 30 by laser welding. It can be understood that the electrical connection between the bus bar and the pole of the battery cell 30 can also be achieved by twisting or pressing.

[0058] The bus bar connects the electrodes of multiple battery cells 30 to form an overall current transmission network. In this way, it can ensure that the current can flow evenly through each battery cell 30, improving the overall performance and safety of the battery module.

[0059] The acquisition board is a circuit board specially designed to collect state information of the battery cell 30. Through high-precision sensors or measurement circuits, the voltage, current and temperature of the battery cell 30 are collected and converted into digital signals for subsequent processing. By monitoring and collecting the state information of the battery cell 30 in real time, the working state of the battery cell 30 can be accurately grasped, and appropriate control measures can be taken in time, thereby avoiding potential safety risks such as overcharging, overdischarging and overheating of the battery cell 30, and improving the service life and performance of the battery cell 30.

[0060] The first collecting plate 63 can be fixed to the corresponding position of the first busbar 61 by screwing, and the second collecting plate 64 can be fixed to the corresponding position of the second busbar 62 by screwing. After the fixing of the collecting plates is completed, the nickel strip of the first collecting plate 63 can be connected with the first busbar 61 by electric connection such as laser welding, so as to realize the electric connection between the first collecting plate 63 and the first busbar 61. The state information of the battery cell 30 can be collected by the collecting assembly. The state information of the battery cell 30 can include the voltage, current and temperature of each battery cell 30 and the like.

[0061] The sealing ring 70 is arranged between the cover plate 20 and the outer side wall of the shell 10 to strengthen the sealing effect, so as to isolate the busbar from the external water vapor.

[0062] Please refer to FIG. 7. In some embodiments, the fixing structure is a receiving groove 81, and one end of the battery cell 30 is inserted into the receiving groove 81, and the bottom of the receiving groove 81 is provided with a through hole 51.

[0063] Specifically, the receiving groove 81 is a groove with a certain shape and size opened on the mounting wall 50. The battery cell 30 is fixed in the receiving groove 81 in the form of insertion. The bottom of the receiving groove 81 is provided with a through hole 51. The receiving groove 81 fixes one end of the battery cell 30, and the first pole 32 communicates with the outside through the through hole 51.

[0064] In some embodiments, the energy storage power supply 100 further comprises a fixing support 82 connected to the side wall of the receiving cavity 40 to fix one end of the battery cell 30 to the fixing structure.

[0065] The fixing support 82 is connected to the side wall of the receiving cavity 40 to fix the other end of the battery cell 30, which is used to fix the battery cell 30 to the receiving groove 81. In this way, the receiving groove 81 and the fixing support 82 can fix both ends of the battery cell 30, so as to avoid the bending of the battery cell 30 or the ejection of the battery cell 30 when the energy storage power supply 100 is subjected to external disturbances such as vibration.

[0066] In some embodiments, the energy storage power supply 100 further comprises an inverter, and the inverter is fixed to the fixing support 82.

[0067] Specifically, the inverter is one of the core components in the energy storage power supply 100, and the inverter is responsible for converting the direct current power output by the battery cell 30 into alternating current power. The performance of the inverter directly affects the output quality and use efficiency of the energy storage power supply 100, so the inverter with high conversion efficiency, high stability and good heat dissipation performance is preferred in design and selection. The inverter is fixed on the fixing support 82 to ensure the stable position of the inverter in the energy storage power supply 100, and facilitate heat dissipation and maintenance.

[0068] The direct fixation of the battery cell 30 on the shell of the shell 10 of the module-free energy storage power supply 100 causes partial or total exposure of the battery cell 30, which makes the sealing of the battery cell 30 face challenges. If the sealing is poor or the sealing element is damaged due to aging, external substances such as water can penetrate into the shell through the disassembled interface, causing problems such as short circuit and corrosion of the battery cell 30. The exposed part of the battery cell 30 is more likely to become a channel for water penetration.

[0069] To solve the above problems, in some embodiments, the periphery of one of the cover plate 20 and the mounting wall 50 is formed with a groove, and the periphery of the other is formed with a protrusion, which is inserted into the groove.

[0070] Specifically, the periphery of one of the cover plate 20 and the mounting wall 50 is formed with a groove, and the periphery of the other is formed with a protrusion, which is inserted into the groove. The insertion can be in the following two forms:

[0071] Please refer to FIG. 8, the periphery of the cover plate 20 is formed with a groove, and the periphery of the mounting wall 50 is formed with a protrusion, which can provide more stable support and fixing effect. Please refer to FIG. 9, the periphery of the cover plate 20 is formed with a protrusion, and the periphery of the mounting wall 50 is formed with a groove, which can make it easier to disassemble the cover plate 20. No matter which case, as long as the design of the protrusion and the groove is reasonable and fits closely, a good sealing effect can be achieved.

[0072] In this way, the design of the protrusion of one of the cover plate 20 and the mounting wall 50 inserted into the groove of the other achieves a close fit between the cover plate 20 and the shell 10, effectively preventing water and other external substances from penetrating into the shell through the joint.

[0073] In some embodiments, the groove is filled with adhesive.

[0074] Specifically, there may be accumulated water on the ground or wet ground, and water may enter from the gap between the groove and the protrusion. To this end, the groove can be filled with adhesive, which can not only bond the cover plate 20 and the shell 10, but also has a waterproof function.

[0075] The material used for the adhesive should consider excellent waterproof, moisture-proof, corrosion-resistant, insulating and other properties, which can be polyurethane glue or acrylic ester glue. Polyurethane glue is a commonly used adhesive, which has good bonding properties and water resistance. The molecular structure of polyurethane glue contains a large number of urethane bonds, which makes polyurethane glue have high cohesion and adhesion, and can firmly bond various materials, including metal, plastic, rubber, etc. At the same time, polyurethane glue also has good water resistance and weather resistance, and can maintain the bonding effect for a long time in humid or harsh environments. Acrylic ester glue also has excellent bonding properties and waterproof function. The molecular structure of acrylic ester glue contains a large number of acrylic ester groups, which makes acrylic ester glue have high reactivity and adhesion, and can quickly cure and form a firm chemical bond with the surface of the bonded object. In addition, acrylic ester glue also has good water resistance and chemical medium resistance, and can maintain stable bonding effect in water or various chemical media.

[0076] In some embodiments, a recess is provided inside the housing, and the protrusion is in abutment with an elastic sealing member placed in the recess.

[0077] Specifically, the main function of the elastic sealing member is to provide a sealing effect, preventing external substances such as water and dust from entering the inside of the housing through the gap, thereby protecting the internal battery 30 and other elements from contamination and damage.

[0078] The elastic sealing member is placed in the recess and tightly fits the wall surface of the recess. This design ensures a gapless connection between the sealing member and the housing 10, thereby improving the reliability of the seal.

[0079] The protrusion is in abutment with the elastic sealing member, and when the recess and the protruding part cooperate, the protruding part will extrude the elastic sealing member in the recess, making it further deform and tightly fill the tiny gap between the recess and the protrusion. This abutment not only enhances the sealing effect, but also improves the stability of the connection.

[0080] The elastic sealing member can be made of materials with good elasticity and aging resistance, such as rubber, silicone, etc. These materials can maintain stable performance over a long period of use and are not prone to aging and hardening.

[0081] In some embodiments, a mounting wall 50 is provided at the bottom of the housing 10.

[0082] The mounting wall 50 is located at the bottom of the housing 10, providing stable support for the battery 30 or other mounting components. This design helps to ensure the stability of the battery 30 during operation and reduces the risk of damage due to vibration or impact.

[0083] The mounting wall 50 is arranged at the bottom of the housing 10. On one hand, the joint between the cover plate 20 and the housing 10 is not easy to be seen. On the other hand, the gravity of the whole product can make the joint between the cover plate 20 and the housing 10 more stable.

[0084] The mounting wall 50 arranged at the bottom can also be related to the heat dissipation design. If the battery cell 30 generates a large amount of heat during operation, the bottom of the housing 10 can be designed with heat dissipation fins, heat dissipation holes, or structures connected to other heat dissipation systems to effectively dissipate heat to the external environment.

[0085] In some embodiments, one of the mounting wall 50 or the cover plate 20 is provided with a support structure abutting the other one of the mounting wall or the cover plate.

[0086] In the battery module, the cover plate 20 is a large plastic plate that is only fixed by the four sides of the cover plate 20. There is a possibility that the middle part will collapse or arch, which will affect the overall stability and sealing of the energy storage power supply 100 structure. To solve this problem, a support structure can be arranged on one of the mounting wall 50 or the cover plate 20 to ensure the flatness and stability of the cover plate 20.

[0087] The support structure is installed on the mounting wall 50 or the cover plate 20 to ensure that the mounting wall 50 and the cover plate 20 can be tightly abutted together. When the support structure is arranged on the mounting wall 50, it is necessary to ensure that the support structure does not interfere with the battery cell 30 or other internal components. When the support structure is selected to be arranged on the cover plate 20, the support structure should be designed to match the corresponding part on the mounting wall 50 so that it can be tightly fitted during assembly. The support structure can be designed as multiple point supports, columnar supports, or mesh supports to disperse and support the weight of the cover plate 20.

[0088] In some embodiments, the support structure is a convex column 91, one of the mounting wall 50 or the cover plate 20 is provided with the convex column 91, and the other one of the mounting wall 50 or the cover plate 30 is provided with a point glue groove 92, the point glue groove 92 is injected with adhesive, and the convex column 91 is inserted into the point glue groove 92.

[0089] Please refer to FIG. 10 and FIG. 11. In this embodiment, convex columns 91 are arranged on the cover plate 20, and point glue grooves 92 matched with the convex columns 91 are arranged on the mounting wall 50. On one hand, the mutual abutment of the convex columns 91 and the point glue grooves 92 can form a support effect, avoiding the collapse of the cover plate 20 pressing on the bus bar or causing the deformation of the cover plate 20 affecting the appearance. On the other hand, the point glue grooves 92 are injected with adhesive, which can form a bond between the convex columns 91 and the point glue grooves 92, better realizing the connection between the cover plate 20 and the mounting wall 50.

[0090] In the description of the specification, reference to "one embodiment", "certain embodiments", "some embodiments", "exemplary embodiments", "a specific example", or "some examples" etc., mean that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the above expressions in various places in the specification are not necessarily referring to the same embodiment or example. Moreover, describing a particular feature, structure, material, or characteristic as included in an embodiment or example is intended to convey that the particular feature, structure, material, or characteristic is included in at least one embodiment or example of the application. Thus, appearances of the expressions "in one embodiment" or "in an embodiment" are not necessarily referring to the same embodiment.

[0091] Although the embodiments of the present application have been shown and described, it would be appreciated by those skilled in the art that changes, modifications, alternatives and variations to these embodiments could be made without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage power supply, wherein, The energy storage power supply comprises: a housing, the housing internally forms a containing cavity, a plurality of battery cells are fixed in the containing cavity, the housing has a mounting wall, the mounting wall forms a through hole, the through hole is communicated with the outside of the containing cavity; a cover plate, the cover plate is arranged on the side of the mounting wall away from the containing cavity, the cover plate and the housing form a containing space, the explosion-proof valve of the battery cell is communicated with the containing space through the through hole.

2. The energy storage power supply of claim 1, wherein, The containing space is further provided with a pressure relief channel communicated with the containing cavity or the outside of the housing.

3. The energy storage power supply of claim 1 or 2, wherein, The mounting wall is provided with a fixing structure on one side of the containing cavity, the through hole is formed in the fixing structure.

4. The energy storage power supply of claim 3, wherein, The electrode of the battery cell is communicated with the containing space through the through hole, the containing space is provided with a busbar, the busbar is electrically connected with the electrode of the battery cell.

5. The energy storage power supply of claim 3 or 4, wherein, The fixing structure is a containing groove, one end of the battery cell is inserted into the containing groove, and the through hole is arranged at the bottom of the containing groove.

6. The energy storage power supply of any of claims 3-5, wherein, The energy storage power supply further comprises a fixing support, the fixing support is connected to the side wall of the containing cavity to fix one end of the battery cell to the fixing structure.

7. The energy storage power supply of claim 6, wherein, The energy storage power supply further comprises an inverter, the inverter is fixed to the fixing support.

8. The energy storage power supply of any of claims 1-7, wherein, The periphery of one of the cover plate and the mounting wall is formed with a groove, and the periphery of the other is formed with a protrusion, the protrusion is inserted into the groove.

9. The energy storage power supply of claim 8, wherein, The groove is filled with adhesive.

10. The energy storage power supply of claim 8 or 9, wherein, An elastic sealing member is arranged in the groove, and the protrusion abuts against the elastic sealing member.

11. The energy storage power supply of any of claims 1-10, wherein, The mounting wall is arranged at the bottom of the housing.

12. The energy storage power supply of any of claims 1-11, wherein, One of the mounting wall or the cover plate is provided with a supporting structure, the supporting structure abuts against the other of the mounting wall or the cover plate.

13. The energy storage power supply of claim 12, wherein, The supporting structure is a convex column, one of the mounting wall or the cover plate is provided with the convex column, and the other of the mounting wall or the cover plate is provided with a glue injection groove, the glue injection groove is filled with adhesive, and the convex column is inserted into the glue injection groove.

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