Housing device and energy storage power supply

Abstract

This application provides a housing device and an energy storage power supply. The energy storage power supply includes multiple battery cells. The housing device includes multiple arrayed limiting grooves and multiple limiting ribs. Each limiting groove accommodates the end of a battery cell. Each limiting groove includes a bottom wall and a side wall connected to the bottom wall. Adjacent limiting grooves share a portion of the side wall. At least a portion of the limiting groove includes a contoured area and a venting area. The contoured area is similar in shape to the end of the battery cell to accommodate the end of the battery cell. The venting area communicates with the external environment to form a venting passage. Limiting ribs are fixed to the bottom wall of the limiting groove. The limiting ribs are located in the contoured area and support the end of the battery cell while avoiding a safety valve located at the end of the battery cell. This allows the bottom wall of the limiting groove and the end of the battery cell to form a pressure relief passage, which connects the safety valve of the battery cell and the venting passage. The above arrangement enables smooth venting of the battery cells, which is beneficial for venting and depressurizing in the event of thermal runaway of the battery cells, simplifies the production process, and reduces production costs.

Description

Technical Field

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

[0002] The casing of the energy storage power supply is provided with a limiting groove for accommodating the battery cell. The side wall of the limiting groove is provided with a through hole connecting the battery cell and the outside of the limiting groove, so that the battery cell can release pressure and exhaust gas through the through hole when thermal runaway occurs. However, in order to ensure the strength of the limiting groove, the through hole is set to be small, resulting in a small exhaust area of ​​the through hole, which leads to poor exhaust of the battery cell. In addition, opening the hole on the side wall increases the production steps during manufacturing and is not conducive to simplifying production operations. Utility Model Content

[0003] In view of this, this application provides a housing device and an energy storage power supply that enables smooth venting of the battery cell, which is beneficial for venting and depressurizing during thermal runaway of the battery cell, simplifies production steps, and reduces production costs.

[0004] One embodiment of this application provides a housing device for an energy storage power supply. The energy storage power supply includes multiple battery cells. The housing device includes multiple limiting grooves and multiple limiting ribs. The multiple limiting grooves are arranged in an array. Each limiting groove is configured to accommodate the end of a battery cell. Each limiting groove includes a bottom wall and a side wall connected to the bottom wall. Every two adjacent limiting grooves share a portion of the side wall. At least a portion of the limiting groove includes a contouring area and a venting area. The contouring area is constructed to resemble the shape of the end of the battery cell to accommodate the end of the battery cell. The venting area is constructed through the shared side wall and communicates with the external environment to form a venting passage. At least one limiting rib is fixed to the bottom wall of each limiting groove. The limiting rib is located in the contouring area and is configured to support the end of the battery cell and avoid a safety valve located at the end of the battery cell, so that the bottom wall of the limiting groove and the end of the battery cell form a pressure relief passage. The pressure relief passage is configured to connect the safety valve of the battery cell and the venting passage.

[0005] By setting the limiting groove to include a contouring area and an exhaust area, compared to the exhaust method through holes in related technologies, this application eliminates the need for through holes on the sidewalls of the limiting groove to achieve cell exhaust and pressure relief, reducing the manufacturing steps of the housing device and thus saving manufacturing time. The two adjacent limiting grooves in this application share a sidewall, which can save materials for the housing device and thus reduce production costs. Furthermore, the exhaust area is set inside the limiting groove, and the exhaust passage formed by the exhaust area and the external environment and the pressure relief passage are used for exhaust, avoiding the situation where the exhaust area is reduced by the through holes on the sidewall. This provides sufficient exhaust area to ensure smooth exhaust of the cell, which is beneficial for exhaust and pressure relief in the event of thermal runaway of the cell.

[0006] In at least one embodiment, the bottom wall of each limiting groove is provided with two limiting ribs, which are spaced apart to form a passage outlet. The exhaust zone has a first end and a second end, the width of the first end is greater than the width of the second end, and the passage outlet is located at the first end, which connects the exhaust zone and the pressure relief passage.

[0007] By setting two limiting ribs, which together support the battery cell, the stability of the battery cell support can be improved compared to a single limiting rib. Furthermore, the two limiting ribs form a passage outlet, which is located at the wider first end of the exhaust zone. This allows for a wider passage outlet, enabling the gas in the pressure relief passage to flow quickly to the exhaust passage, thereby achieving rapid pressure relief of the battery cell.

[0008] In at least one embodiment, each limiting groove has at least two exhaust zones, which are spaced apart circumferentially along the contoured area, and each exhaust zone is connected to a pressure relief passage.

[0009] By setting at least two exhaust zones, the number of exhaust passages can be increased, thereby increasing the exhaust area, improving the efficiency of pressure relief and exhaust, and further improving the smoothness of gas exhaust during cell thermal runaway.

[0010] In at least one embodiment, the two ends of the limiting rib are configured to connect the sidewalls of the limiting groove, so that the limiting rib, the bottom wall of the limiting groove and the sidewalls of the limiting groove form a glue-containing groove, which is configured to contain the adhesive that is bonded to the end of the battery cell and prevent the adhesive from entering the pressure relief passage and the venting passage.

[0011] By connecting the two ends of the limiting rib to the side wall of the limiting groove, the limiting rib prevents the adhesive from entering the pressure relief passage and the exhaust passage, thereby improving the problem of adhesive clogging the pressure relief passage and the exhaust passage, and thus improving the smoothness of exhaust when the battery cell is thermally runaway.

[0012] In at least one embodiment, at least a portion of the limiting rib has an arc-shaped structure that protrudes along a direction away from the central axis of the contouring area.

[0013] By setting the limiting ribs to an arc shape, with the arc shape protruding away from the central axis of the contouring area, the area of ​​the pressure relief passage is made larger, thereby improving the efficiency of pressure relief.

[0014] In at least one embodiment, the housing device further includes a plurality of connecting ribs, each connecting rib having its two ends connected to a limiting rib and the sidewall of a limiting groove, and the plurality of connecting ribs being spaced apart.

[0015] By setting multiple connecting ribs, the limiting ribs and sidewalls can be strengthened to improve the structural strength of the shell device.

[0016] In at least one embodiment, the depths of the different limiting grooves are different along the direction perpendicular to the bottom wall of the limiting groove. Among the multiple limiting grooves, the height of the limiting ribs in some limiting grooves is configured to be different from the height of the limiting ribs in other limiting grooves, so that the end faces of the multiple cells are on the same plane.

[0017] By setting the height of the limiting ribs, the end faces of multiple battery cells are aligned, allowing each end face of a battery cell to contact the corresponding component. This improves the assembly quality of the components within the housing. Furthermore, the absence of protruding parts between the multiple battery cells prevents the edges of the battery cells from easily scratching the components within the housing that come into contact with them.

[0018] In at least one embodiment, the sidewall of the limiting groove is provided with an exhaust groove, the end of the limiting groove away from the bottom wall has a groove opening, the exhaust groove extends from the groove opening to the bottom wall, and the exhaust groove is located in the contour area.

[0019] By setting up venting channels, the venting channels, venting passages, and pressure relief passages can all release air, increasing the venting area and thus improving the efficiency of cell venting.

[0020] In at least one embodiment, the outermost limiting groove among the plurality of limiting grooves is provided with an exhaust zone, the exhaust zone is connected to the contouring zone, the exhaust zone and the exhaust zone are spaced apart along the circumference of the contouring zone, the exhaust zone is connected to the external environment to form an exhaust passage, and the exhaust passage is connected to the pressure relief passage.

[0021] By setting up an exhaust zone that connects to the external environment to form an exhaust path, the battery cell can discharge gas from both the exhaust path and the venting path, increasing the venting area and making the venting of the battery cell smooth, which is beneficial for venting and depressurizing in the event of thermal runaway of the battery cell.

[0022] On the other hand, embodiments of this application provide an energy storage power supply, including multiple battery cells and a housing device as described above; the multiple battery cells are disposed within the housing device.

[0023] By applying the aforementioned housing device to an energy storage power supply, the housing device is provided with a limiting groove, and one end of the battery cell is located in the limiting groove. By setting the limiting groove to include a contouring area and an exhaust area, compared with the exhaust method through holes in related technologies, the battery cell can be vented and depressurized without setting through holes on the side wall of the limiting groove, reducing the manufacturing steps of the housing device and thus saving manufacturing time. The two adjacent limiting grooves in this application share a side wall, which can save the manufacturing materials of the housing device and thus reduce production costs. Furthermore, the exhaust area is set in the limiting groove, and the exhaust passage formed by the exhaust area and the external environment and the depressurization passage are used for joint exhaust, avoiding the situation where the exhaust area is reduced by setting through holes on the side wall. Thus, there is enough exhaust area to ensure smooth exhaust of the battery cell, which is beneficial for exhaust and depressurization in the event of thermal runaway of the battery cell. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0025] Figure 1 This is a schematic diagram of the external structure of an energy storage power supply provided in an embodiment of this application;

[0026] Figure 2 An exploded view of an energy storage power source provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the structure of a battery cell of an energy storage power supply installed in a housing device according to an embodiment of this application;

[0028] Figure 4 A cross-sectional view of a battery cell mounted in a housing device for an energy storage power supply provided in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the structure of the bottom shell of a housing device provided in an embodiment of this application;

[0030] Figure 6 for Figure 5 Enlarged view of region A in the middle;

[0031] Figure 7 A top view of the bottom shell of a housing device provided in an embodiment of this application.

[0032] Explanation of main component symbols

[0033] 100. Housing assembly; 101. Bottom shell; 200. Energy storage power supply; 201. Battery cell; 2010. Safety valve; 202. Inverter module; 203. Support plate;

[0034] 10. Limiting groove; 11. Bottom wall; 12. Side wall; 20. Limiting rib; 30. Connecting rib;

[0035] 110. Contouring area; 120. Exhaust area; 121. First end; 122. Second end; 130. Exhaust passage; 140. Pressure relief passage; 150. Exhaust groove; 160. Groove opening; 170. Increased exhaust area; 180. Increased exhaust passage; 111. First limiting groove; 112. Second limiting groove; 210. Passage outlet; 220. Adhesive container;

[0036] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0037] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0039] The casing of the energy storage power supply is provided with a limiting groove for accommodating the battery cell. The side wall of the limiting groove is provided with a through hole connecting the battery cell and the outside of the limiting groove, so that the battery cell can release pressure and exhaust gas through the through hole when thermal runaway occurs. However, in order to ensure the strength of the limiting groove, the through hole is set to be small, resulting in a small exhaust area of ​​the through hole, which leads to poor exhaust of the battery cell and is not conducive to exhaust and pressure relief when the battery cell is thermally runaway. Moreover, opening the hole on the side wall increases the production steps during manufacturing and is not conducive to simplifying production operations.

[0040] An embodiment of this application provides a housing device applied to an energy storage power supply. The energy storage power supply includes multiple battery cells. The housing device includes multiple limiting grooves and multiple limiting ribs. The multiple limiting grooves are arranged in an array. Each limiting groove is configured to accommodate the end of a battery cell. Each limiting groove includes a bottom wall and a side wall connected to the bottom wall. Every two adjacent limiting grooves share a portion of the side wall. At least a portion of the limiting groove includes a contouring area and a venting area. The contouring area is constructed to resemble the shape of the end of the battery cell to accommodate the end of the battery cell. The venting area is constructed through the shared side wall and communicates with the external environment to form a venting passage. At least one limiting rib is fixed to the bottom wall of each limiting groove. The limiting rib is located in the contouring area and is configured to support the end of the battery cell and avoid a safety valve located at the end of the battery cell, so that the bottom wall of the limiting groove and the end of the battery cell form a pressure relief passage. The pressure relief passage is configured to connect the safety valve of the battery cell and the venting passage.

[0041] By setting the limiting groove to include a contouring area and an exhaust area, compared to the exhaust method through holes in related technologies, this application eliminates the need for through holes on the sidewalls of the limiting groove to achieve cell exhaust and pressure relief, reducing the manufacturing steps of the housing device and thus saving manufacturing time. The two adjacent limiting grooves in this application share a sidewall, which can save materials for the housing device and thus reduce production costs. Furthermore, the exhaust area is set inside the limiting groove, and the exhaust passage formed by the exhaust area and the external environment and the pressure relief passage are used for exhaust, avoiding the situation where the exhaust area is reduced by the through holes on the sidewall. This provides sufficient exhaust area to ensure smooth exhaust of the cell, which is beneficial for exhaust and pressure relief in the event of thermal runaway of the cell.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Please see Figure 1 and Figure 2 The embodiments of this application provide a housing device 100 and an energy storage power supply 200.

[0044] The energy storage power supply 200 has the functions of energy storage and discharge, and can be used for household backup power, production unit backup power, outdoor work, outdoor entertainment, etc.

[0045] Please see Figure 2 In some embodiments, the housing device 100 is applied to the energy storage power supply 200. It is understood that the energy storage power supply 200 includes the housing device 100 and includes a plurality of battery cells 201. The plurality of battery cells 201 are disposed within the housing device 100 so as to realize the functions of energy storage and discharge of the energy storage power supply 200 through the battery cells 201.

[0046] Please see Figure 2 In some embodiments, the energy storage power supply 200 includes an inverter module 202, which is disposed within the housing device 100 and electrically connected to the battery cell 201. The inverter module 202 is used to control the AC / DC conversion of the output current of the battery cell 201. The energy storage power supply 200 equipped with the inverter module 202 can be a small portable power supply, a residential energy storage power supply, an industrial or commercial energy storage power supply, or a containerized energy storage power supply, etc.

[0047] In some embodiments, the inverter module 202 may be omitted. The energy storage power supply 200 without the inverter module 202 can be used independently. The energy storage power supply 200 without the inverter module 202 typically only outputs DC power. When used independently, the energy storage power supply 200 without the inverter module 202 can be used in conjunction with the energy storage power supply 200 with the inverter module 202 as a power system providing additional battery capacity.

[0048] Please see Figure 3 and Figure 4 In some embodiments, the housing device 100 includes a plurality of limiting grooves 10 arranged in an array, each limiting groove 10 being configured to accommodate the end of a battery cell 201, so as to quickly position the battery cell 201 through the limiting groove 10 so that the battery cell 201 can be quickly installed into the housing device 100.

[0049] Please see Figure 3 , Figure 4 and Figure 5The housing device 100 includes a plurality of limiting ribs 20. Each limiting groove 10 includes a bottom wall 11 and a side wall 12 connected to the bottom wall 11. Every two adjacent limiting grooves 10 share a portion of the side wall 12. At least a portion of the limiting groove 10 includes a contouring region 110 and a venting region 120. The contouring region 110 is configured to resemble the end shape of the battery cell 201 to accommodate the end of the battery cell 201. The venting region 120 is constructed through the shared side wall 12 and is connected to the external environment. The bottom wall 11 of each limiting groove 10 is fixed with at least one limiting rib 20, which is located in the contour area 110 and is configured to support the end of the battery cell 201 and avoid the safety valve 2010 located at the end of the battery cell 201, so that the bottom wall 11 of the limiting groove 10 and the end of the battery cell 201 form a pressure relief passage 140, which is configured to connect the safety valve 2010 of the battery cell 201 and the exhaust passage 130.

[0050] By configuring the limiting groove 10 into a structure including a contouring area 110 and an exhaust area 120, compared to the exhaust method through a through hole in the related art, this application eliminates the need to provide through holes in the side wall 12 of the limiting groove 10 to achieve exhaust and pressure relief of the battery cell 201, reducing the manufacturing steps of the housing device 100 and thus saving manufacturing time. The two adjacent limiting grooves 10 in this application share the side wall 12, which can save the manufacturing materials of the housing device 100 and thus reduce production costs. Furthermore, the exhaust area 120 is located within the limiting groove 10, and the exhaust passage 130 and the pressure relief passage 140 formed by the exhaust area 120 communicating with the external environment provide joint exhaust, avoiding the situation where providing through holes in the side wall 12 reduces the exhaust area. This ensures sufficient exhaust area for smooth exhaust of the battery cell 201, which is beneficial for exhaust and pressure relief in the event of thermal runaway of the battery cell 201.

[0051] Please see Figure 5 and Figure 6 In some embodiments, the sidewall 12 of the limiting groove 10 is formed by a rib provided on the bottom shell 101 of the housing device 100, so that the bottom shell 101 of the housing device 100 can have sufficient thickness, and the rib can act as a reinforcing rib to enhance the structural strength of the bottom shell 101 of the housing device 100.

[0052] Please see Figure 4 , Figure 5 and Figure 6In some embodiments, the bottom wall 11 of each limiting groove 10 is provided with two limiting ribs 20, and the two limiting ribs 20 are spaced apart to form a passage outlet 210. The exhaust zone 120 has a first end 121 and a second end 122. The width of the first end 121 is greater than the width of the second end 122. The passage outlet 210 is located at the first end 121 and has the same width as the first end 121. The passage outlet 210 connects the exhaust zone 120 and the pressure relief passage 140.

[0053] By setting two limiting ribs 20, which together support the battery cell 201, the stability of the support for the battery cell 201 can be improved compared to a single limiting rib 20. Furthermore, the two limiting ribs 20 form a passage outlet 210, which is located at the wider first end 121 of the exhaust zone 120. This allows for a wider passage outlet 210, enabling the gas in the pressure relief passage 140 to flow quickly to the exhaust passage 130 through the passage outlet 210, thereby achieving rapid pressure relief of the battery cell 201.

[0054] Understandably, the first end 121 is connected to the contouring area 110, and the second end 122 is located at the end of the exhaust area 120 away from the contouring area 110.

[0055] Please see Figure 4 , Figure 5 and Figure 6 In some embodiments, each limiting groove 10 has at least two exhaust zones 120, which are spaced apart circumferentially along the contoured area 110. Each exhaust zone 120 is connected to a pressure relief passage 140. Compared to one exhaust zone 120, the number of exhaust passages 130 can be increased, thereby increasing the exhaust area, improving the efficiency of pressure relief and exhaust, and further improving the smoothness of gas exhaust in the event of thermal runaway of the battery cell 201.

[0056] Please see Figure 4 , Figure 5 and Figure 6 In some embodiments, the two ends of the limiting rib 20 are configured to connect to the sidewall 12 of the limiting groove 10, so that the limiting rib 20, the bottom wall 11 of the limiting groove 10 and the sidewall 12 of the limiting groove 10 form a glue-containing groove 220. The glue-containing groove 220 is configured to contain the adhesive that is bonded to the end of the battery cell 201 and prevent the adhesive from entering the pressure relief passage 140 and the exhaust passage 130, so as to improve the problem of adhesive blocking the pressure relief passage 140 and the exhaust passage 130, thereby improving the smoothness of exhaust when the battery cell 201 experiences thermal runaway.

[0057] In some embodiments, the limiting rib 20 and the side wall 12 are integrally formed. The integrally formed structure has no physical interruption, which can improve the structural strength of the limiting rib 20 and the side wall 12. In addition, it can prevent gaps from appearing at the connection between the limiting rib 20 and the side wall 12, thereby further improving the problem of adhesive entering the pressure relief passage 140 and the exhaust passage 130.

[0058] In some embodiments, at least a portion of the limiting rib 20 has an arc-shaped structure, which protrudes along a direction away from the central axis of the contour area 110, so as to make the area of ​​the pressure relief passage 140 larger and improve the pressure relief efficiency.

[0059] For example, the contouring area 110 is a cylindrical structure, and the arc-shaped structure (limiting rib 20) is coaxially arranged with the contouring area 110. The projection of the limiting rib 20 along the direction perpendicular to the bottom wall 11 is completely coincident with the end face of the battery cell 201, so as to ensure that the limiting rib 20 supports the area of ​​the battery cell 201 and improve the stability of the limiting rib 20 supporting the battery cell 201.

[0060] Please see Figure 1 , Figure 2 and Figure 3 In this application, the direction perpendicular to the bottom wall 11 of the limiting groove 10 is the third direction Z; the bottom wall 11 is parallel to the plane formed by the first direction X and the second direction Y; wherein, the housing device 100 is generally in the shape of a cuboid, the first direction X can be the length direction of the housing device 100, the second direction can be the width direction of the housing device 100, and the third direction is the height direction of the housing device 100.

[0061] Please see Figure 4 , Figure 5 and Figure 6 In some embodiments, the housing device 100 further includes a plurality of connecting ribs 30, each connecting rib 30 having its two ends connected to the limiting rib 20 and the sidewall 12 of the limiting groove 10, respectively, and the plurality of connecting ribs 30 are spaced apart. By providing a plurality of connecting ribs 30, the plurality of connecting ribs 30 can strengthen the limiting rib 20 and the sidewall 12, thereby improving the structural strength of the housing device 100.

[0062] In some embodiments, at least some of the connecting ribs 30 are flush with the side of the limiting rib 20 away from the bottom wall 11, so that multiple connecting ribs 30 cooperate with the limiting rib 20 to support the battery cell 201, thereby increasing the support strength of the battery cell 201.

[0063] In other embodiments, at least a portion of the connecting rib 30 is positioned below the side of the limiting rib 20 that is also away from the bottom wall 11, so that the connecting rib 30 is covered by adhesive, thereby increasing the bonding area between the adhesive and the end of the battery cell 201 and improving the stability of the adhesive bonding to the battery cell 201.

[0064] In some embodiments, each connecting rib 30 and the limiting rib 20 are integrally formed, and the integrally formed structure has no physical interruption, which can improve the structural strength of the connecting rib 30 and the limiting rib 20.

[0065] In some embodiments, in a limiting groove 10, each connecting rib 30, each limiting rib 20, and the bottom wall 11 and side wall 12 of the limiting groove 10 are integrally formed. The integrally formed structure has no physical interruption. Since the housing device 100 is formed by the above structure, this arrangement can improve the structural strength of the entire housing device 100.

[0066] Please see Figure 2 In the energy storage power supply 200, the housing device 100 has a part that contacts or is installed at the end of the battery cell 201. If the heights of multiple battery cells 201 are not uniform, the recessed battery cell 201 is spaced apart from the part, and only some of the multiple battery cells 201 contacts the part, the part is prone to deformation, affecting the assembly quality, and the battery cell 201 is prone to damaging other components inside the housing device 100.

[0067] Please see Figure 2 For example, in an energy storage power supply, when the energy storage power supply 200 includes an inverter module 202, the energy storage power supply 200 includes a support plate 203 for mounting the inverter module 202. The support plate 203 is disposed at the end of the battery cell 201 away from the limiting groove 10. If the heights of multiple battery cells 201 are not uniform, the support plate 203 is prone to deformation, thereby affecting the assembly quality of the inverter module 202.

[0068] In some embodiments, along the direction perpendicular to the bottom wall 11 of the limiting groove 10, the depth of different limiting grooves 10 in the third direction Z is different. In the multiple limiting grooves 10, the height of the limiting ribs 20 in some limiting grooves 10 is configured to be different from the height of the limiting ribs 20 in other limiting grooves 10, so that the end faces of multiple battery cells 201 are in the same plane, so that multiple battery cells 201 are in contact with the corresponding parts, improving the assembly quality of the parts in the housing device 100, and there are no protruding parts between the multiple battery cells 201, so that the edges of the battery cells 201 are not easy to scratch the parts in contact with the battery cells 201, such as the support plate 203, in the housing device 100.

[0069] For example, the end faces of multiple battery cells 201 being in the same plane may include the following situations: (1) When the height of multiple battery cells 201 along the third direction Z is the same, by setting limiting ribs 20 of different heights, the two end faces of multiple battery cells 201 along the third direction Z are in the same plane; (2) When the height of multiple battery cells 201 is different, by setting limiting ribs 20 of different heights, the end faces of multiple battery cells 201 away from the bottom wall 11 of the limiting groove 10 are in the same plane.

[0070] Please see Figure 6 In some embodiments, the sidewall 12 of the limiting groove 10 is provided with an exhaust groove 150, and the end of the limiting groove 10 away from the bottom wall 11 has a groove opening 160. The exhaust groove 150 extends from the groove opening 160 to the bottom wall 11 and is located in the contour area 110.

[0071] By setting up the exhaust groove 150, the exhaust groove 150, the exhaust passage 130 and the pressure relief passage 140 can exhaust together, thereby increasing the exhaust area and improving the exhaust efficiency of the battery cell 201.

[0072] In some embodiments, the venting groove 150 is connected to the adhesive container 220, and the venting groove 150 and the outer side of the battery cell 201 are spaced apart to form an adhesive injection passage, through which the adhesive is injected into the adhesive container 220.

[0073] Since the venting groove 150 extends from the groove opening 160 of the limiting groove 10 to the bottom wall 11, when the venting groove 150 and the outer side of the battery cell 201 form a glue injection channel, glue can be injected from the outside of the limiting groove 10. This allows the glue injection operation to be performed after the battery cell 201 is placed in the limiting groove 10, thereby improving the problem of the glue solidifying prematurely when the glue injection operation is performed before the battery cell 201 is placed in the limiting groove 10, and thus improving the installation quality of the battery cell 201.

[0074] Please see Figure 3 and Figure 7 In some embodiments, the outermost limiting groove 10 among the multiple limiting grooves 10 is provided with a discharge enhancement area 170. The discharge enhancement area 170 is connected to the contouring area 110. The discharge enhancement area 170 and the exhaust area 120 are arranged circumferentially at intervals along the contouring area 110. The discharge enhancement area 170 is in communication with the external environment to form a discharge enhancement passage 180. The discharge enhancement passage 180 is connected to the pressure relief passage 140, so that some of the gas generated by the thermal runaway of the battery cell 201 can be discharged to the external environment through the pressure relief passage 140 and the discharge enhancement passage 180. By setting the discharge enhancement area 170, the battery cell 201 can discharge gas from both the discharge enhancement passage 180 and the exhaust passage 130, increasing the exhaust area and making the exhaust of the battery cell 201 smooth, which is beneficial for exhaust and pressure relief in the event of thermal runaway of the battery cell 201.

[0075] Please see Figure 3 and Figure 7 In some embodiments, the multiple limiting grooves 10 are divided into multiple first limiting grooves 111 and multiple second limiting grooves 112. The outermost limiting groove 10 among the multiple limiting grooves 10 is the first limiting groove 111, and the multiple first limiting grooves 111 are arranged around the multiple second limiting grooves 112.

[0076] In some embodiments, each of the plurality of first limiting grooves 111 is provided with at least one exhaust area 170 and at least one exhaust area 120 to increase the exhaust area, thereby improving the smoothness of exhaust of the battery cell 201, which is beneficial for exhaust pressure relief when the battery cell 201 is thermally runaway.

[0077] In some embodiments, the exhaust area of ​​the exhaust passage 180 formed by the exhaust zone 170 is greater than the exhaust area of ​​the exhaust passage 130 formed by the exhaust zone 120; so that the exhaust area of ​​the exhaust passage 180 formed by the exhaust zone 170 is larger, thereby improving the smoothness of exhaust when the battery cell 201 experiences thermal runaway.

[0078] For example, the exhaust region 170 is a rectangular area formed by the sidewall 12 extending away from the contour region 110; the width of the rectangular area is equal to the width of the passage outlet 210, and the length of the rectangular area is greater than or equal to the length of the exhaust region 120, so that the exhaust area of ​​the exhaust passage 180 formed by the rectangular area is larger, improving the smoothness of exhaust in the event of thermal runaway of the battery cell 201. The shape of the exhaust region 170 is not limited to a rectangular area; the exhaust region 170 can be other shapes.

[0079] In some embodiments, each of the plurality of second limiting grooves 112 is provided with at least two exhaust zones 120 to increase the exhaust area, thereby improving the smoothness of exhaust of the battery cell 201 and facilitating exhaust pressure relief during thermal runaway of the battery cell 201; wherein, the shape of the exhaust zone 120 can be pointed, rectangular, or fan-shaped, and the shape of the exhaust zone 120 is not limited to these.

[0080] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A housing device for use in an energy storage power supply, the energy storage power supply comprising a plurality of battery cells, characterized in that, The housing device includes: Multiple limiting slots are arranged in an array, each limiting slot is configured to accommodate the end of one of the battery cells, each limiting slot includes a bottom wall and a side wall connected to the bottom wall, every two adjacent limiting slots share a portion of the side wall, at least a portion of the limiting slots includes a contouring area and a venting area, the contouring area is constructed to resemble the shape of the end of the battery cell to accommodate the end of the battery cell, the venting area is constructed through the shared side wall, the venting area communicates with the external environment to form a venting passage; Multiple limiting ribs are provided, and at least one limiting rib is fixed to the bottom wall of each limiting groove. The limiting rib is located in the conforming area and is configured to support the end of the battery cell and avoid the safety valve located at the end of the battery cell, so that the bottom wall of the limiting groove and the end of the battery cell form a pressure relief passage. The pressure relief passage is configured to connect the safety valve of the battery cell and the exhaust passage.

2. The housing device according to claim 1, characterized in that, Each of the limiting grooves has two limiting ribs on its bottom wall. The two limiting ribs are spaced apart to form a passage outlet. The exhaust zone has a first end and a second end. The width of the first end is greater than the width of the second end. The passage outlet is located at the first end and connects the exhaust zone and the pressure relief passage.

3. The housing device according to claim 1, characterized in that, Each of the limiting grooves has at least two exhaust zones, and the at least two exhaust zones are arranged at circumferential intervals along the contouring area, and each exhaust zone is connected to the pressure relief passage.

4. The housing device according to claim 1, characterized in that, The two ends of the limiting rib are configured to connect to the sidewalls of the limiting groove, so that the limiting rib, the bottom wall of the limiting groove and the sidewalls of the limiting groove form a glue-containing groove. The glue-containing groove is configured to accommodate the adhesive that is bonded to the end of the battery cell and to prevent the adhesive from entering the pressure relief passage and the exhaust passage.

5. The housing device according to claim 1, characterized in that, At least a portion of the limiting rib has an arc-shaped structure, and the arc-shaped structure protrudes in a direction away from the central axis of the contouring area.

6. The housing device according to claim 1, characterized in that, The housing device further includes multiple connecting ribs, each of which is connected at both ends to the limiting rib and the side wall of the limiting groove, and the multiple connecting ribs are spaced apart.

7. The housing device according to claim 1, characterized in that, Along the direction perpendicular to the bottom wall of the limiting groove, the depths of the different limiting grooves are different. Among the multiple limiting grooves, the height of the limiting ribs in some of the limiting grooves is configured to be different from the height of the limiting ribs in other limiting grooves, so that the end faces of the multiple battery cells are on the same plane.

8. The housing device according to claim 1, characterized in that, The side wall of the limiting groove is provided with an exhaust groove, and the end of the limiting groove away from the bottom wall has a groove opening. The exhaust groove extends from the groove opening to the bottom wall and is located in the contouring area.

9. The housing device according to claim 1, characterized in that, The outermost limiting groove among the plurality of limiting grooves is provided with an exhaust enhancement area, the exhaust enhancement area is connected to the contouring area, the exhaust enhancement area and the exhaust area are spaced apart along the circumference of the contouring area, the exhaust enhancement area is connected to the external environment to form an exhaust enhancement passage, and the exhaust enhancement passage is connected to the pressure relief passage.

10. An energy storage power source, characterized in that, include: The housing device as described in any one of claims 1 to 9; Multiple battery cells are housed within the housing device.

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