Shell assembly, battery pack and energy storage power supply

Abstract

The utility model discloses a shell assembly, a battery pack and an energy storage power supply. The shell assembly comprises a shell, the shell is provided with a containing cavity, the inner wall of the containing cavity is provided with a first support, the first support is used for installing a battery cell, the battery cell is provided with a first anti-explosion valve, the first support is provided with a supporting structure, and the supporting structure is used for supporting the battery cell. The first anti-explosion valve is arranged in the containing cavity, a gap is formed between the first anti-explosion valve and the inner wall of the containing cavity so that a pressure relief space can be formed, the pressure relief space is communicated with the containing cavity, and a valve port of the first anti-explosion valve faces the pressure relief space. The supporting structure is arranged on the first support, the valve port of the first anti-explosion valve faces the pressure relief space formed by the supporting structure and the battery cell, and therefore under the condition that the battery cell is in thermal runaway, substances sprayed out of the first anti-explosion valve can enter the pressure relief space and flow out of the energy storage power source; under the condition that the material cost, the process difficulty and the size and the weight of the energy storage power supply are not increased, the pressure in the battery cell is reduced in time.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage power supplies, and more specifically, to a housing assembly, a battery pack, and an energy storage power supply. Background Art

[0002] In related technologies, energy storage power supplies address thermal runaway situations by adding insulation to battery modules. This can prolong the propagation time of thermal runaway, reduce the maximum temperature of the modules, and prevent fires caused by the runaway valves. Alternatively, liquid cooling and endothermic phase change materials are used in battery module design to promptly dissipate heat from the cells when thermal runaway occurs. However, these measures not only increase material costs and process complexity, but also increase the size and weight of the energy storage power supply. Utility Model Content

[0003] The embodiments of the present application provide a shell assembly, a battery pack, and an energy storage power supply to solve or improve the technical problem that when high-pressure fluid passes through the battery pack, the battery pack is easily damaged under the pressure of the high-pressure fluid, thereby reducing the connection stability and service life of the fluid battery pack.

[0004] A housing assembly according to an embodiment of the present application includes a housing, wherein the housing has a housing cavity, an inner wall of the housing cavity is provided with a first bracket for mounting a battery cell, the battery cell being provided with a first explosion-proof valve, the first bracket having a support structure for supporting the battery cell and creating a gap between the first explosion-proof valve and the inner wall of the housing cavity to form a pressure relief space, the pressure relief space being in communication with the housing cavity, and the valve port of the first explosion-proof valve facing the pressure relief space.

[0005] In this way, by providing a support structure on the first bracket, the valve mouth of the first explosion-proof valve is oriented toward the pressure relief space formed by the support structure and the battery cell. Therefore, when the battery cell is in thermal runaway, the material ejected from the first explosion-proof valve can enter the pressure relief space and flow out of the battery pack to the outside, thereby timely reducing the pressure in the battery cell without increasing the material cost, process difficulty, and the volume and weight of the energy storage power supply.

[0006] In some embodiments, the first bracket is integrally formed with the housing.

[0007] In this way, by integrally forming the first bracket and the shell, the battery cell can be fixed to the shell, thereby realizing a module-free fixing structure. The battery pack does not need to reserve module installation space, which reduces the volume of the energy storage power supply and increases the volume energy density of the energy storage power supply, thereby reducing product costs.

[0008] In some embodiments, the first bracket includes a fixing portion, the fixing portion is provided with a first fixing groove, the first fixing groove is used to be engaged with one end of the battery cell, and the support structure is disposed in the first fixing groove.

[0009] Thus, by forming the first fixing groove on the fixing portion of the first bracket, one end of the battery cell can be fixed to the first fixing groove to prevent the battery cell from moving. The battery cell can be further fixed by abutting the supporting structure against the battery cell.

[0010] In some embodiments, an opening is provided on a side wall of the first fixing groove, and the pressure relief space is connected to the accommodating cavity through the opening.

[0011] In this way, by opening the side wall of the first fixing groove so that the pressure relief space is connected to the accommodating cavity, the material ejected from the battery cell can be guided out of the first fixing groove to achieve the purpose of pressure relief.

[0012] In some embodiments, a gap is formed between a sidewall of the first fixing groove and a sidewall of the battery core, and the pressure relief space is connected to the accommodating cavity through the gap.

[0013] In this way, by forming a gap between the side wall of the first fixing groove and the side wall of the battery cell, the material ejected from the battery cell can flow from the gap into the accommodating cavity, thereby achieving the purpose of pressure relief.

[0014] In some embodiments, the fixing portion is provided with a plurality of first fixing grooves arranged in parallel, and the supporting structure includes two convex ribs, which pass through the plurality of first fixing grooves and form a guide channel, and the valve port of the first explosion-proof valve faces the guide channel and is connected to the accommodating cavity through the guide channel.

[0015] Thus, multiple first fixing grooves are arranged in parallel on the fixing portion, thereby being able to fix multiple battery cells and improving space utilization. By forming a guide channel with the support structure and aligning the valve opening of the first explosion-proof valve toward the guide channel, the material ejected from the battery cells can enter the accommodating chamber through the guide channel, thereby achieving the purpose of pressure relief.

[0016] In some embodiments, the first bracket includes a plurality of fixing columns arranged at intervals, the plurality of fixing columns forming a first fixing groove, the first fixing groove being used to engage with one end of the battery cell, and the support structure is provided on the fixing columns.

[0017] In this way, by providing multiple fixing posts to enclose the first fixing groove, one end of the battery cell can be fixed to the first fixing groove to prevent the battery cell from moving. In addition, the support structure is provided on the fixing posts, which can simultaneously fix the battery cell and form a pressure relief space to guide the pressure relief of the battery cell.

[0018] In certain embodiments, the distance between the first explosion-proof valve and the inner wall of the accommodating chamber is ≥2 mm.

[0019] In this way, by setting the distance between the first explosion-proof valve and the inner wall of the accommodating chamber to be greater than or equal to 2 mm, a pressure relief space can be formed, and the pressure relief space can enable the material sprayed from the battery cell to flow quickly into the accommodating chamber to achieve the purpose of rapid pressure relief.

[0020] In some embodiments, the first explosion-proof valve is arranged to avoid the support structure.

[0021] In this way, the first explosion-proof valve can be prevented from being blocked by the supporting structure, thereby avoiding explosion due to failure in pressure relief of the battery cell.

[0022] In some embodiments, the supporting structure is a protrusion protruding from the inner wall of the accommodating cavity.

[0023] In this way, by forming a support structure on the inner wall of the accommodating cavity, a pressure relief space can be formed while supporting the battery cell to guide the battery cell to release pressure.

[0024] In some embodiments, the battery pack includes a second bracket connected to the housing, and one end of the battery cell is connected to the first bracket, and the other end is connected to the second bracket.

[0025] In this way, by connecting the second bracket to the shell, the other end of the battery cell is connected to the second bracket, so that the battery cell can be further fixed by the second bracket, thereby enhancing the stability of the battery cell in the battery pack.

[0026] In some embodiments, the first bracket is provided with a first fixing groove, and the second bracket is provided with a second fixing groove, the first fixing groove is used to be engaged with one end of the battery cell, and the second fixing groove is used to be engaged with the other end of the battery cell, the battery cell includes a second explosion-proof valve, the first explosion-proof valve and the second explosion-proof valve are respectively arranged on opposite sides of the battery cell, and the second bracket and the second explosion-proof valve are arranged to avoid air.

[0027] Thus, by providing a second fixing groove on the second bracket, the other end of the battery cell can be fixed by the second fixing groove. By providing a second explosion-proof valve on the battery cell, with the second explosion-proof valve and the first explosion-proof valve respectively located at both ends of the battery cell, the pressure relief of the battery cell can be accelerated. By arranging the second bracket and the second explosion-proof valve away from each other, the second explosion-proof valve can be prevented from being blocked.

[0028] In some embodiments, a through hole is provided on the bottom surface of the second fixing groove, the battery cell includes a positive electrode and a negative electrode, the through hole is used to allow a bus to connect the positive electrodes and negative electrodes of multiple battery cells through the through hole, and the bus and the second explosion-proof valve are arranged to avoid air.

[0029] In this way, by providing a busbar to connect the positive and negative electrodes of multiple battery cells, the multiple battery cells can be connected in series, and the busbar and the second explosion-proof valve are arranged to avoid air, which can prevent the second explosion-proof valve from being blocked.

[0030] A battery pack according to an embodiment of the present application includes a battery cell and a shell assembly according to any one of the above embodiments.

[0031] An energy storage power supply according to an embodiment of the present application includes a battery cell, an inverter, and a housing assembly as described in any of the above embodiments, wherein the battery cell and the inverter are mounted in the housing assembly, and the inverter is electrically connected to the battery cell. In certain embodiments, the energy storage power supply includes a fan located in the accommodating cavity, the housing assembly includes a guide channel, the fan is configured to supply or exhaust air to the guide channel, and the airflow direction formed by the fan is in the same direction as the extension direction of the guide channel.

[0032] In this way, by arranging a fan in the accommodating cavity, the fan dissipates heat for the energy storage power supply.

[0033] In certain embodiments, the energy storage power supply includes a ventilation structure, and the accommodating cavity is connected to the outside through the ventilation structure.

[0034] In this way, by providing a ventilation structure, the accommodating cavity can be communicated with the outside, so that the material ejected from the battery cell can be discharged from the accommodating cavity to the outside, thereby achieving the purpose of pressure relief.

[0035] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] Figure 1 This is a schematic diagram of the structure of an energy storage power supply in certain embodiments of the present application;

[0038] Figure 2 is an exploded view of an energy storage power supply according to certain embodiments of the present application;

[0039] Figure 3 is a schematic structural diagram of a housing assembly in certain embodiments of the present application;

[0040] Figure 4 is another structural schematic diagram of a housing assembly in certain embodiments of the present application;

[0041] Figure 5is another structural schematic diagram of a housing assembly in certain embodiments of the present application;

[0042] Figure 6 is a schematic cross-sectional view of a housing assembly according to certain embodiments of the present application;

[0043] Figure 7 is a cross-sectional schematic diagram of an energy storage power supply according to certain embodiments of the present application;

[0044] Figure 8 is another structural schematic diagram of a housing assembly in certain embodiments of the present application;

[0045] Figure 9 is a schematic structural diagram of the housing and the second bracket in certain embodiments of the present application;

[0046] Figure 10 is a top view of a housing assembly according to certain embodiments of the present application;

[0047] Figure 11 is another cross-sectional schematic diagram of a housing assembly according to certain embodiments of the present application;

[0048] Figures 12 to 14 It is a schematic diagram of the structure of the battery cell of certain embodiments of the present application.

[0049] Description of Figure Numbers:

[0050] 100. Energy storage power supply; 10. Housing assembly; 11. Housing; 111. First bracket; 1111. Fixing portion; 1112. First fixing groove; 11121. Opening; 1113. Pressure relief space; 1114. Support structure; 11141. Raised rib; 11142. Guide channel; 1115. Fixing column; 1116. Gap; 1117. Pressure relief groove; 112. Accommodating cavity; 113. First connecting column; 12. Battery cell; 121. First explosion-proof valve; 122. Second explosion-proof valve; 123. Positive electrode; 124. Negative electrode; 13. Ventilation structure; 131. Ventilation hole; 14. Second bracket; 141. Second fixing groove; 142. Through hole; 143. Second connecting column; 144. Fixing support; 15. Fixing seat; 16. Heat dissipation space; 17. Bus; 20. Inverter; 30. Fan. DETAILED DESCRIPTION

[0051] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] The disclosure herein provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself 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 will appreciate the application of other processes and / or the use of other materials.

[0056] See also Figure 1 、 Figure 2 and Figure 3A housing assembly 10 according to an embodiment of the present application includes a housing 11. The housing 11 is provided with a housing cavity 112. A first bracket 111 is provided on the inner wall of the housing cavity 112. The first bracket 111 is used to mount a battery cell 12. The battery cell 12 is provided with a first explosion-proof valve 121. The first bracket 111 is provided with a support structure 1114. The support structure 1114 is used to support the battery cell 12 and to create a gap between the first explosion-proof valve 121 and the inner wall of the housing cavity 112 to form a pressure relief space 1113. The pressure relief space 1113 is in communication with the housing cavity 112. The valve port of the first explosion-proof valve 121 faces the pressure relief space 1113.

[0057] In this way, by providing a support structure 1114 on the first bracket 111, the valve mouth of the first explosion-proof valve 121 is oriented toward the pressure relief space 1113 formed by the support structure 1114 and the battery cell 12. Therefore, when the battery cell 12 is in thermal runaway, the material sprayed from the first explosion-proof valve 121 can enter the pressure relief space 1113 and flow out of the shell assembly 10 to the outside, thereby timely reducing the pressure in the battery cell 12 without increasing the material cost, process difficulty, and the volume and weight of the energy storage power supply 100.

[0058] Among them, the energy storage power supply 100 is a device that can store electrical energy, can be used as a mobile power supply, can store a large amount of electrical energy, and can efficiently transmit the stored electrical energy to other electrical devices. The energy storage power supply 100 includes a battery cell 12, a bus bar 17, an inverter 20 and a shell assembly 10. The battery cell 12 can provide electrical energy, and the bus bar 17 can connect the positive electrode 123 and the negative electrode 124 of multiple battery cells 12. The inverter 20 can be a converter that can realize the mutual conversion between DC power and constant frequency and constant voltage or frequency and voltage regulated AC power. For example, the inverter 20 can convert DC power (such as batteries, storage bottles, etc.) into AC power, or convert AC power into DC power, or can convert low voltage into high voltage, and convert high voltage into low voltage.

[0059] The battery pack (not shown in the figures) includes battery cells 12, a busbar 17, and a housing assembly 10. The busbar 17 can connect the positive electrodes 123 and negative electrodes 124 of multiple battery cells 12, thereby enabling the battery pack to expand the energy capacity of the energy storage power supply 100 when connected to the energy storage power supply 100 via a power cord or by plugging the battery pack into the energy storage power supply 100.

[0060] Specifically, the housing assembly 10 includes a housing 11. The housing 11 includes a first housing and a second housing, wherein the first housing can be connected to the second housing. For example, the first housing can be connected to the second housing via bolts, or the first housing can be connected to the second housing via snap fasteners. The housing 11 is cylindrical in shape, thereby forming a receiving cavity 112, which can be used to accommodate the battery cell 12 and other structures.

[0061] A first bracket 111 is provided on the inner wall of the accommodating chamber 112, i.e., the bottom wall of the housing 11. The first bracket 111 can be used to fix the battery cell 12. A support structure 1114 is provided on the first bracket 111. The support structure 1114 can be a protrusion protruding from the inner wall of the accommodating chamber 112. For example, the support structure 1114 can be a plane protruding from the inner wall of the accommodating chamber 112 or a rib protruding from the inner wall of the accommodating chamber 112. This allows the support structure 1114 to support the battery cell 12 and allows one end of the battery cell 12 to be spaced from the inner wall of the accommodating chamber 112, thereby forming a pressure relief space 1113 between the battery cell 12 and the inner wall of the accommodating chamber 112. The pressure relief space 1113 can communicate with the accommodating chamber 112, and the accommodating chamber 112 can communicate with the outside of the housing 11. Thus, the pressure relief space 1113 can be used to drain substances that enter the pressure relief space 1113 and drain the substances out of the energy storage power supply 100.

[0062] The battery cell 12 can be used to store electrical energy and output electrical energy when needed by converting electrical energy into chemical energy for storage and converting the chemical energy back into electrical energy for release when needed. The battery cell 12 can be mounted on the first bracket 111 so that the battery cell 12 is fixed.

[0063] A first explosion-proof valve 121 is provided on the end surface of the battery cell 12 close to the first bracket 111, and the distance between the first explosion-proof valve 121 and the inner wall of the accommodating chamber 112 is greater than or equal to 2 mm, so that a pressure relief space 1113 can be formed between the first explosion-proof valve 121 and the inner wall of the accommodating chamber 112, and the pressure relief space 1113 can allow the material ejected from the battery cell 12 to flow quickly into the accommodating chamber 112, thereby achieving the purpose of rapid pressure relief.

[0064] The valve opening of the first explosion-proof valve 121 can face the pressure relief space 1113, and the first explosion-proof valve 121 and the support structure 1114 are arranged in a spaced relationship, thereby preventing the first explosion-proof valve 121 from being blocked by the support structure 1114 and allowing the material ejected from the first explosion-proof valve 121 to flow into the pressure relief space 1113. A weak point or weak device is provided inside the first explosion-proof valve 121. When the pressure in the battery cell 12 increases, the weak point is opened by the pressure, thereby releasing the pressure in the battery cell 12, thereby preventing the battery cell 12 from exploding or catching fire due to abnormal conditions such as overcharging, over-discharging, and short circuit.

[0065] See also Figure 2 In some embodiments, the first bracket 111 is integrally formed with the shell 11 .

[0066] In this way, by integrally forming the first bracket 111 and the shell 11, the battery cell 12 can be fixed to the shell 11, thereby realizing a module-free fixing structure. The shell assembly 10 does not need to reserve module installation space, thereby reducing the volume of the energy storage power supply 100 and improving the energy density of the energy storage power supply 100, thereby reducing the product volume, weight and cost.

[0067] Specifically, the first bracket 111 and the housing 11 can be manufactured using an integrated molding process. For example, when the first bracket 111 and the housing 11 are made of metal, they can be manufactured using sand casting, pressure casting, or pneumatic casting, where molten metal or alloy is injected into a prefabricated mold, and the first bracket 111 and the housing 11 are formed after solidification and cooling. When the first bracket 111 and the housing 11 are made of plastic, the molten plastic material is injected into the mold under high pressure, and the first bracket 111 and the housing 11 are formed into the desired shape and size after cooling and solidification.

[0068] Therefore, there is no need to assemble the battery cells 12 into modules and then install multiple modules into the shell assembly 10 to form a three-level assembly mode of "battery cells 12-modules-shell assembly 10". Instead, the battery cells 12 are directly integrated into the shell assembly 10, which simplifies the assembly process and can significantly simplify the structure of the shell assembly 10, improve space utilization, and thereby increase the energy density of the battery and reduce costs.

[0069] See also Figure 2 In some embodiments, the first bracket 111 includes a fixing portion 1111 , the fixing portion 1111 is provided with a first fixing groove 1112 , the first fixing groove 1112 is used to be engaged with one end of the battery cell 12 , and the support structure 1114 is disposed in the first fixing groove 1112 .

[0070] Thus, by forming the first fixing groove 1112 on the fixing portion 1111 of the first bracket 111, one end of the battery cell 12 can be fixed to the first fixing groove 1112 to prevent the battery cell 12 from moving. By abutting the support structure 1114 against the battery cell 12, the battery cell 12 can be further fixed.

[0071] Specifically, the first bracket 111 includes a fixing portion 1111 that protrudes from the inner wall of the housing 11 and is formed with a first fixing groove 1112. The shape and size of the first fixing groove 1112 match the shape and size of the end face of the battery cell 12. For example, if the battery cell 12 is cylindrical, the first fixing groove 1112 is circular; if the battery cell 12 is a quadrangular prism, the first fixing groove 1112 is rectangular. The position of the first fixing groove 1112 on the first bracket 111 corresponds to the position of the battery cell 12, allowing one end of the battery cell 12 to engage with the first fixing groove 1112, thereby enabling the fixing portion 1111 to secure the battery cell 12. A support structure 1114 can be disposed within the first fixing groove 1112, so that when the battery cell 12 is inserted into the first fixing groove 1112, it is supported by the support structure 1114, further securing the battery cell 12.

[0072] The number of the first fixing grooves 1112 matches the number of the battery cells 12 , so that the pressure relief space 1113 can be connected to a row of multiple first fixing grooves 1112 arranged in an array, so that the material ejected from the battery cells 12 from the first explosion-proof valve 121 can flow into the pressure relief space 1113 .

[0073] See also Figure 2 and Figure 3 In some embodiments, an opening 11121 is provided on the side wall of the first fixing groove 1112 , and the pressure relief space 1113 is connected to the accommodating cavity 112 through the opening 11121 .

[0074] Thus, by opening the opening 11121 on the side wall of the first fixing groove 1112 , the pressure relief space 1113 is connected to the accommodating cavity 112 , so that the material ejected from the battery cell 12 can be guided out of the first fixing groove 1112 to achieve the purpose of pressure relief.

[0075] Specifically, an opening 11121 is provided on the sidewall of the first fixing groove 1112. The opening 11121 can connect the pressure relief space 1113 and the accommodating chamber 112, so that the material in the pressure relief space 1113 can enter the accommodating chamber 112. The number of openings 11121 can be multiple, for example, the number of openings 11121 can be two or four, and the multiple openings 11121 can be symmetrically arranged on the sidewall of the first fixing groove 1112.

[0076] See also Figure 4 In some embodiments, a gap 1116 is formed between the sidewall of the first fixing groove 1112 and the sidewall of the battery cell 12 , and the pressure relief space 1113 is connected to the accommodating cavity 112 through the gap 1116 .

[0077] In this way, by forming a gap 1116 between the sidewall of the first fixing groove 1112 and the sidewall of the battery cell 12 , the material ejected from the battery cell 12 can flow from the gap 1116 into the accommodating cavity 112 to achieve the purpose of pressure relief.

[0078] Specifically, the diameter of the battery cell 12 can be adapted to the diameter of the first fixed groove 1112, so that a gap 1116 is formed between the side wall of the first fixed groove 1112 and the side wall of the battery cell 12, and the pressure relief space 1113 is connected to the accommodating cavity 112 through the gap 1116, so that the material sprayed from the battery cell 12 into the pressure relief space 1113 can flow into the accommodating cavity 112 from the gap 1116.

[0079] In certain embodiments, see Figure 5 The first fixed groove 1112 is provided with a special-shaped pressure relief groove 1117 along the direction of its groove. The pressure relief groove 1117 is located between the battery cell 12 and the side wall of the first fixed groove 1112, and the pressure relief groove 1117 can be connected with the accommodating cavity 112, and the material sprayed out of the battery cell 12 into the pressure relief space 1113 can flow from the pressure relief groove 1117 into the accommodating cavity 112.

[0080] See also Figure 6 In some embodiments, the fixing portion 1111 is provided with a plurality of first fixing grooves 1112 arranged in parallel, and the supporting structure 1114 includes two convex ribs 11141, which penetrate the plurality of first fixing grooves 1112 and form a guide channel 11142. The valve port of the first explosion-proof valve 121 faces the guide channel 11142 and is connected to the accommodating cavity 112 through the guide channel 11142.

[0081] Thus, multiple first fixing grooves 1112 are arranged in parallel on the fixing portion 1111, thereby securing multiple battery cells 12 and improving space utilization. By forming a guide channel 11142 from the support structure 1114 and orienting the valve opening of the first explosion-proof valve 121 toward the guide channel 11142, substances ejected from the battery cells 12 can enter the accommodating chamber 112 through the guide channel 11142, thereby achieving the purpose of pressure relief.

[0082] Specifically, the fixing portion 1111 is provided with a plurality of first fixing grooves 1112 arranged in parallel. For example, the first fixing grooves 1112 can be arranged in an array within the accommodating cavity 112. The support structure 1114 includes two parallel ribs 11141. The ribs 11141 can penetrate the plurality of first fixing grooves 1112, thereby forming a guide channel 11142 that communicates with the accommodating cavity 112. The valve opening of the first explosion-proof valve 121 of the battery cell 12 is oriented toward the guide channel 11142, so that the material ejected from the battery cell 12 can flow through the guide channel 11142 into the accommodating cavity 112.

[0083] Please refer again Figure 3 In some embodiments, the first bracket 111 includes a plurality of spaced apart fixing columns 1115 , the plurality of fixing columns 1115 forming a first fixing groove 1112 , the first fixing groove 1112 being used to engage with one end of the battery cell 12 , and the support structure 1114 being disposed on the fixing columns 1115 .

[0084] Thus, by providing a plurality of fixing posts 1115 to enclose the first fixing groove 1112, one end of the battery cell 12 can be fixed to the first fixing groove 1112 to prevent the battery cell 12 from moving. Furthermore, the support structure 1114 is provided on the fixing posts 1115 to secure the battery cell 12 while forming a pressure relief space 1113 to guide the pressure relief of the battery cell 12.

[0085] Specifically, the first bracket 111 includes a plurality of spaced-apart fixing columns 1115, each of which is in the shape of a quadrangular prism, and each prism face is an arc surface, so that a first fixing groove 1112 can be formed between four adjacent fixing columns 1115. When one end of the battery cell 12 extends into the first fixing groove 1112, one end of the battery cell 12 can be engaged with the first fixing groove 1112.

[0086] The support structure 1114 is disposed on the edge surface of the fixing column 1115 , that is, on the inner wall of the first fixing groove 1112 , so that the support structure 1114 can support one end of the battery cell 12 and form a pressure relief space 1113 .

[0087] See also Figure 2 、 Figure 7 and Figure 8 In some embodiments, the housing assembly 10 includes a second bracket 14 , which is connected to the housing 11 . One end of the battery cell 12 is connected to the first bracket 111 , and the other end is connected to the second bracket 14 .

[0088] In this way, by connecting the second bracket 14 to the housing 11 , the other end of the battery cell 12 is connected to the second bracket 14 , so that the battery cell 12 can be further fixed by the second bracket 14 , thereby enhancing the stability of the battery cell 12 in the housing assembly 10 .

[0089] Specifically, the housing assembly 10 also includes a second bracket 14, which can be used to secure the battery cells 12 and provide support for the inverter 20. The second bracket 14 can be connected to the housing 11, thereby securing the second bracket 14. For example, a first connecting post 113 is formed on the inner wall of the housing 11 facing the second bracket 14, and a second connecting post 143 is formed on the end surface of the second bracket 14 facing the housing 11. The first connecting post 113 and the second connecting post 143 can be connected by bolts, thereby securing the housing 11 to the second bracket 14.

[0090] One end of the battery cell 12 can be connected to the first bracket 111 , and the other end of the battery cell 12 can be connected to the second bracket 14 , so that the battery cell 12 can be fixed by the first bracket 111 and the second bracket 14 .

[0091] See also Figure 2 、 Figure 8 and Figure 9 In some embodiments, the first bracket 111 is provided with a first fixing groove 1112, and the second bracket 14 is provided with a second fixing groove 141. The first fixing groove 1112 is used to be embedded with one end of the battery cell 12, and the second fixing groove 141 is used to be embedded with the other end of the battery cell 12. The battery cell 12 includes a second explosion-proof valve 122. The first explosion-proof valve 121 and the second explosion-proof valve 122 are respectively arranged on opposite sides of the battery cell 12, and the second bracket 14 and the second explosion-proof valve 122 are arranged to avoid air.

[0092] Thus, by providing the second fixing groove 141 on the second bracket 14, the other end of the battery cell 12 can be fixed by the second fixing groove 141. By providing the second explosion-proof valve 122 on the battery cell 12, and by arranging the second explosion-proof valve 122 and the first explosion-proof valve 121 at both ends of the battery cell 12, the pressure relief of the battery cell 12 can be accelerated. By arranging the second bracket 14 and the second explosion-proof valve 122 to avoid airflow, the second explosion-proof valve 122 can be prevented from being blocked.

[0093] Specifically, the second bracket 14 is provided with second fixing grooves 141. The shape, size, and number of the second fixing grooves 141 are adapted to the shape, size, and number of the battery cells 12. For example, when the battery cell 12 is cylindrical, the second fixing groove 141 is circular; when the battery cell 12 is a quadrangular prism, the second fixing groove 141 is rectangular; and when there are 28 battery cells 12, there are 28 second fixing grooves 141. Furthermore, the position of the second fixing groove 141 is adapted to the position of the battery cells 12, allowing one end of the battery cell 12 to engage with the second fixing groove 141. By engaging the other end of the battery cell 12 with the first fixing groove 1112, the battery cell 12 is secured within the housing assembly 10.

[0094] A second explosion-proof valve 122 is provided on the end surface of the battery cell 12 near the second bracket 14, and the second explosion-proof valve 122 and the first explosion-proof valve 121 are respectively provided at both ends of the battery cell 12. The second explosion-proof valve 122 has a weak point or a weak device provided inside. When the pressure in the battery cell 12 increases, the weak point is dislodged by the pressure, thereby releasing the pressure in the battery cell 12 and preventing the battery cell 12 from exploding or catching fire due to abnormal conditions such as overcharging, over-discharging, and short circuiting.

[0095] The second bracket 14 can be arranged to avoid the air between the second explosion-proof valve 122. That is, when the battery cell 12 is inserted into the second fixing groove 141 and engaged, the second explosion-proof valve 122 needs to avoid being blocked by the second bracket 14, so that the substances produced by the battery cell 12 can be ejected from the second explosion-proof valve 122, so that the battery cell 12 can be depressurized.

[0096] Please refer again Figure 2 and Figure 8 In some embodiments, the housing assembly 10 includes a fixing seat 15 , which is connected to the second bracket 14 and spaced apart from the battery cell 12 , forming a heat dissipation space 16 between the fixing seat 15 and the second bracket 14 .

[0097] In this way, by connecting the fixing seat 15 to the second bracket 14 and spacing it from the battery cell 12 , a heat dissipation space 16 can be formed, so that the material sprayed out of the second explosion-proof valve 122 can enter the heat dissipation space 16 .

[0098] Specifically, the housing assembly 10 also includes a fixing base 15, which can be used to secure and support the inverter 20. The fixing base 15 can be connected to the second bracket 14 and spaced apart from the battery cell 12 to form a heat dissipation space 16 between the fixing base 15 and the second bracket 14. For example, the second bracket 14 can have a fixing support 144 formed on its end face facing away from the first bracket. The fixing support 144 protrudes from the end face of the second bracket 14 and can be connected to the fixing base 15 via bolts. This allows the material ejected from the second explosion-proof valve 122 to enter the heat dissipation space 16.

[0099] See also Figure 2 、 Figure 9 and Figure 10 In some embodiments, a through hole 142 is provided on the bottom surface of the second fixing groove 141. The battery cell 12 includes a positive electrode 123 and a negative electrode 124. The through hole 142 is used to connect the positive electrodes 123 and the negative electrodes 124 of multiple battery cells 12 through the through hole 142. The bus bar 17 and the second explosion-proof valve 122 are arranged to avoid air.

[0100] In this way, by providing a busbar 17 to connect the positive electrodes 123 and the negative electrodes 124 of the multiple battery cells 12, the multiple battery cells 12 can be connected in series, and the busbar 17 and the second explosion-proof valve 122 are arranged to avoid air, which can prevent the second explosion-proof valve 122 from being blocked.

[0101] Specifically, the housing assembly 10 also includes a busbar 17, which is a sheet-shaped connector made of a conductive material and is used to connect the multiple battery cells 12 to form an integrated conductive structure. For example, the busbar 17 can be made of conductive materials such as copper, aluminum, copper-aluminum alloy, and aluminum-magnesium alloy. The busbar 17 can thus connect the positive electrodes 123 and negative electrodes 124 of the multiple battery cells 12, allowing the multiple battery cells 12 to be connected in series or parallel to meet the voltage and capacity requirements of different housing assemblies 10.

[0102] A through hole 142 is defined on the bottom surface of the second fixing groove 141 . The through hole 142 allows the busbar 17 to pass through, thereby enabling the busbar 17 to connect the positive electrodes 123 and the negative electrodes 124 of adjacent battery cells 12 .

[0103] In some embodiments, the positive electrode 123 and the negative electrode 124 of the battery cell 12 can protrude from the through hole 142 , so that the bus bar 17 can be connected to the positive electrode 123 and the negative electrode 124 protruding from the through hole 142 .

[0104] The busbar 17 can be arranged to avoid the air gap between the second explosion-proof valve 122. For example, after the battery cell 12 is inserted into the second fixing groove 141 and engaged, the second explosion-proof valve 122 can eject substances from the through hole 142 into the heat dissipation space 16. When the busbar 17 is connected to the positive electrode 123 and the negative electrode 124, it is necessary to avoid blocking the second explosion-proof valve 122 to prevent the busbar 17 from blocking the second explosion-proof valve 122.

[0105] See also Figure 7 、 Figure 12 、 Figure 13 and Figure 14 In some embodiments, the angle formed between the line connecting the first explosion-proof valve 121 and the second explosion-proof valve 122 and the vertical line passing through the second explosion-proof valve 122 is less than or equal to 10 degrees.

[0106] In this way, after determining the installation position of the second explosion-proof valve 122, by making the angle formed between the connecting line between the first explosion-proof valve 121 and the second explosion-proof valve 122 and the vertical line passing through the second explosion-proof valve 122 less than or equal to 10 degrees, the installation position of the first explosion-proof valve 121 can be determined, and the first explosion-proof valve 121 can be located in the pressure relief space 1113 to avoid the first explosion-proof valve 121 from being blocked.

[0107] Specifically, since it is impossible to determine whether the position of the valve port is facing the pressure relief space 1113 when the first explosion-proof valve 121 is inserted into the first fixing groove 1112, in order to avoid the first explosion-proof valve 121 from being blocked, it is necessary to determine the positional relationship between the first explosion-proof valve 121 and the second explosion-proof valve 122 when opening the first explosion-proof valve 121 and the second explosion-proof valve 122 on the battery cell 12, that is, to make the angle formed between the connecting line between the first explosion-proof valve 121 and the second explosion-proof valve 122 and the vertical line passing through the second explosion-proof valve 122 less than or equal to 10 degrees. Therefore, when the battery cell 12 is extended into the second fixing groove 141 for engagement, the position of the second explosion-proof valve 122 can be determined by arranging the second explosion-proof valve 122 to avoid air space with the bus 17 and the second bracket 14, thereby enabling the position of the first explosion-proof valve 121 to be determined.

[0108] Please refer again Figure 2 and Figure 7 In some embodiments, the energy storage power supply 100 includes a fan 30 located in the accommodating chamber 112. The fan 30 is used to supply air or exhaust air to the pressure relief space 1113. The airflow direction formed by the fan 30 is in the same direction as the extension direction of the guide channel 11142.

[0109] In this way, by arranging the fan 30 in the accommodating cavity 112 , the fan 30 dissipates heat for the energy storage power supply 100 .

[0110] Specifically, the energy storage power supply 100 further includes a fan 30, which is disposed in the accommodating chamber 112 and can supply or exhaust air to the accommodating chamber 112. The fan 30 can be a hair dryer 30 or an exhaust fan 30. When the fan 30 is a hair dryer 30, the fan 30 can supply air to the accommodating chamber 112, so that the airflow can enter the pressure relief space 1113, and the heat of the battery cell 12 is dissipated through the pressure relief space 1113. When the fan 30 is an exhaust fan 30, the fan 30 can exhaust air into the accommodating chamber 112, so that a negative pressure is formed in the accommodating chamber 112, and the outside of the energy storage power supply 100 is a positive pressure, so that the airflow enters the pressure relief space 1113 under the control of the pressure difference, and the heat of the battery cell 12 is dissipated through the pressure relief space 1113.

[0111] In some embodiments, there may be multiple fans 30. For example, if there are two fans 30, one of them can blow air into the accommodating cavity 112, while the other fan 30 can draw air into the accommodating cavity 112. The airflow direction formed by the fans 30 is in the same direction as the extension direction of the guide channel 11142, thereby driving the airflow within the accommodating cavity 112, allowing the airflow to enter the pressure relief space 1113, and dissipating heat from the battery cell 12 through the pressure relief space 1113.

[0112] In some embodiments, both fans 30 are hair dryers 30 and blow air in the same direction in the accommodating cavity 112, so that the airflow direction formed by the fans 30 is the same as the extension direction of the guide channel 11142, thereby allowing the airflow to enter the pressure relief space 1113 and dissipate heat for the battery cell 12 through the pressure relief space 1113.

[0113] See also Figure 1 、 Figure 2 and Figure 7 In some embodiments, the energy storage power supply 100 includes a ventilation structure 13 , and the accommodating cavity 112 is connected to the outside through the ventilation structure 13 .

[0114] In this way, by providing the ventilation structure 13 , the accommodating cavity 112 can be communicated with the outside, so that the material ejected from the battery cell 12 can be discharged from the accommodating cavity 112 to the outside, thereby achieving the purpose of pressure relief.

[0115] Specifically, the energy storage power supply 100 includes a ventilation structure 13, which can be a ventilation fin. The ventilation structure 13 can be used to guide or increase air circulation within the energy storage power supply 100, thereby dissipating heat from the energy storage power supply 100. The ventilation structure 13 can be disposed on the first housing, or the ventilation structure 13 can be disposed on the second housing, or the ventilation structure 13 can be disposed on both the first housing and the second housing. There can be multiple ventilation structures 13. For example, when there are two ventilation structures 13, the ventilation structures 13 can be disposed on opposite sides of the energy storage power supply 100; when there are four ventilation structures 13, the ventilation structures 13 can be disposed on the circumference of the energy storage power supply 100.

[0116] The ventilation structure 13 can form a ventilation hole 131, which can connect the inside of the shell assembly 10 with the outside of the shell assembly 10, and the pressure relief space 1113 can be connected to the ventilation hole 131, so that the material ejected from the battery cell 12 from the first explosion-proof valve 121 can flow into the pressure relief space 1113 and then flow out of the shell assembly 10 from the ventilation hole 131.

[0117] In the description of this specification, the reference terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0118] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are optional and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A housing assembly, characterized in that: The housing assembly comprises: A shell, the shell is provided with a accommodating cavity, the inner wall of the accommodating cavity is provided with a first bracket, the first bracket is used to install the battery cell, the battery cell is provided with a first explosion-proof valve, the first bracket is provided with a supporting structure, the supporting structure is used to support the battery cell and create a distance between the first explosion-proof valve and the inner wall of the accommodating cavity to form a pressure relief space, the pressure relief space is connected to the accommodating cavity, and the valve port of the first explosion-proof valve faces the pressure relief space.

2. The housing assembly according to claim 1, wherein: The first bracket and the housing are integrally formed.

3. The housing assembly according to claim 1, wherein: The first bracket includes a fixing portion, the fixing portion is provided with a first fixing groove, the first fixing groove is used to be engaged with one end of the battery cell, and the supporting structure is arranged in the first fixing groove.

4. The housing assembly according to claim 3, wherein: An opening is provided on the side wall of the first fixing groove, and the pressure relief space is communicated with the accommodating cavity through the opening.

5. The housing assembly according to claim 3, wherein: A gap is formed between the sidewall of the first fixing groove and the sidewall of the battery core, and the pressure relief space is communicated with the accommodating cavity through the gap.

6. The housing assembly according to claim 3, wherein: The fixing portion is provided with a plurality of first fixing grooves arranged in parallel, and the supporting structure includes two convex ribs, which penetrate the plurality of first fixing grooves and form a guide channel. The valve port of the first explosion-proof valve faces the guide channel and is connected to the accommodating cavity through the guide channel.

7. The housing assembly according to claim 1, wherein: The first bracket includes a plurality of fixing columns arranged at intervals, the plurality of fixing columns forming a first fixing groove, the first fixing groove being used for being engaged with one end of the battery cell, and the support structure being arranged on the fixing columns.

8. The housing assembly according to claim 1, wherein: The distance between the first explosion-proof valve and the inner wall of the accommodating chamber is ≥2 mm.

9. The housing assembly according to claim 1, wherein: The first explosion-proof valve and the supporting structure are arranged to avoid each other.

10. The housing assembly according to claim 1, wherein: The supporting structure is a protrusion protruding from the inner wall of the accommodating cavity.

11. The housing assembly according to claim 1, wherein: The housing assembly includes a second bracket connected to the housing. One end of the battery cell is connected to the first bracket, and the other end is connected to the second bracket.

12. The housing assembly according to claim 11, wherein: The first bracket is provided with a first fixing groove, and the second bracket is provided with a second fixing groove. The first fixing groove is used to be embedded with one end of the battery cell, and the second fixing groove is used to be embedded with the other end of the battery cell. The battery cell includes a second explosion-proof valve. The first explosion-proof valve and the second explosion-proof valve are respectively arranged on opposite sides of the battery cell, and the second bracket and the second explosion-proof valve are arranged to avoid air.

13. The housing assembly according to claim 12, wherein: A through hole is provided on the bottom surface of the second fixing groove. The battery cell includes a positive electrode and a negative electrode. The through hole is used to connect the positive and negative electrodes of multiple battery cells through the bus bar. The bus bar and the second explosion-proof valve are arranged to avoid air.

14. A battery pack, characterized in that: The invention comprises a battery core and a shell assembly according to any one of claims 1 to 13.

15. An energy storage power supply, characterized in that: The invention comprises a battery cell, an inverter and a housing assembly according to any one of claims 1 to 13, wherein the battery cell and the inverter are mounted on the housing assembly, and the inverter is electrically connected to the battery cell.

16. The energy storage power supply according to claim 15, characterized in that: The energy storage power supply includes a fan located in the accommodating cavity, the shell assembly includes a guide channel, the fan is used to supply air or exhaust air to the guide channel, and the airflow direction formed by the fan is in the same direction as the extension direction of the guide channel.

17. The energy storage power supply according to claim 15, characterized in that: The energy storage power supply includes a ventilation structure, and the accommodating cavity is connected to the outside through the ventilation structure.

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