Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, and relates to the field of batteries, the battery pack comprises a box body and a first battery unit, and the box body comprises a first plate and a second plate which are oppositely arranged; the first battery unit is arranged between the first plate and the second plate, the first battery unit comprises a first battery pack, a second battery pack and an elastic component, the first battery pack and the second battery pack are arranged along a first direction, each of the first battery pack and the second battery pack comprises a plurality of single batteries arranged along a second direction, and each single battery is provided with an anti-explosion valve; the anti-explosion valve of the first battery pack is arranged towards the first plate, and the anti-explosion valve of the second battery pack is arranged towards the second plate; and the elastic component is elastically propped against the first battery pack and the second battery pack respectively. The first plate is provided with a first exhaust channel and a plurality of first air inlet holes communicated with the first exhaust channel, and each first air inlet hole corresponds to at least one anti-explosion valve in the first battery pack. According to the invention, thermoelectric separation is realized, the structural complexity is not increased, and a thermal management function is not responded.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to a battery pack and a power utilization device. BACKGROUND

[0002] At present, in the field of battery packs PACK of electric passenger cars, CTP (Cell to Pack) integration has become a mainstream scheme. However, in most CTP schemes, the explosion-proof valve of the battery cell is connected with the strong current in the same space area, which increases the risk of thermal diffusion and short-circuit fire when the battery cell occurs thermal runaway.

[0003] In order to optimize this problem, in the existing thermal-electric separation scheme, the explosion-proof valve of the battery cell is usually designed at the top or bottom of the battery cell. When the explosion-proof valve is located at the top, a separate flue needs to be designed, which increases the complexity of the structure. When the explosion-proof valve is located at the bottom, the bottom of the battery cell is usually in contact with the liquid cooling plate, which may affect the thermal management design of the whole battery pack, increasing the use risk of the battery pack. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the application discloses a battery pack and a power utilization device, which realize thermal-electric separation and do not increase the complexity of the structure of the battery pack and do not respond to the thermal management function of the bottom liquid cooling plate.

[0005] Technical scheme: In a first aspect, the embodiments of the application provide a battery pack having a first direction and a second direction intersecting each other, and the battery pack comprises:

[0006] a box body comprising a first plate member and a second plate member oppositely arranged along the first direction;

[0007] a first battery unit arranged between the first plate member and the second plate member, the first battery unit comprising two groups of battery packs arranged along the first direction and an elastic assembly arranged between the two groups of battery packs, each battery pack comprising a plurality of single batteries arranged along the second direction, each single battery having an explosion-proof valve, the explosion-proof valves in the battery pack adjacent to the first plate member being arranged towards the first plate member, and the explosion-proof valves in the battery pack adjacent to the second plate member being arranged towards the second plate member, and the elastic assembly being connected with the two groups of battery packs and configured to be capable of extruding the two groups of battery packs in the first battery unit;

[0008] the first plate member has a first exhaust passage and a plurality of first air inlets communicating with the first exhaust passage, each first air inlet being arranged corresponding to at least one explosion-proof valve in the adjacent battery pack;

[0009] the second plate member has a second exhaust passage and a plurality of second air inlets communicating with the second exhaust passage, each second air inlet being arranged corresponding to at least one explosion-proof valve in the adjacent battery pack.

[0010] In some embodiments, the second plate member is provided with a plurality of second battery units in the first direction, and each of the second battery units is provided with an anti-explosion valve on at least one side in the first direction.

[0011] The anti-explosion valve in the second battery unit corresponds to the second air inlet hole on the adjacent second plate member.

[0012] In some embodiments, the elastic assembly comprises:

[0013] A support plate provided in the second direction;

[0014] An elastic member provided on both sides of the support plate in the first direction and connected with the support plate, and the elastic member is connected with the adjacent battery pack.

[0015] In some embodiments, the width of the elastic member in the first direction is W1, and 1mm≤W1≤15mm is satisfied.

[0016] In some embodiments, the battery pack further comprises a first side plate provided on one side of the first battery unit facing the first plate member and connected with the first plate member; the first side plate comprises:

[0017] A first side plate body provided in the second direction and connected with the battery pack in the first battery unit close to the first plate member;

[0018] A first glue blocking member connected with the first side plate body, and the first glue blocking member is provided on one side of the first side plate body away from the first plate member and attached to the battery pack in the first battery unit close to the first plate member;

[0019] A first sealing member provided on one side of the first side plate body facing the first plate member and connected with the first plate member, and attached to the first plate member;

[0020] The first side plate further has a plurality of first pressure relief holes arranged in the second direction, the first pressure relief holes penetrating through the first sealing member, the first side plate body, the first glue blocking member, and communicating with at least one first air inlet hole on the first plate member.

[0021] In some embodiments, the battery pack further comprises a second side plate provided on one side of the first battery unit facing the second plate member and connected with the second plate member; the second side plate comprises:

[0022] A second side plate body provided in the second direction and connected with the battery pack in the first battery unit close to the second plate member;

[0023] A second glue blocking member connected with the second side plate body, and the second glue blocking member is provided on one side of the second side plate body away from the second plate member and attached to the battery pack in the first battery unit close to the second plate member;

[0024] A second sealing member is arranged on one side of the second side plate body facing the second plate member and connected with the second plate member, and is attached to the second plate member.

[0025] The second side plate further has a plurality of second pressure relief holes arranged along the second direction, the second pressure relief holes penetrating through the second sealing member, the second side plate body, the second glue blocking member, and communicating with at least one second air inlet hole on the second plate member.

[0026] In some embodiments, the battery pack further comprises a third side plate arranged on one side of the second battery unit provided with the explosion-proof valve and connected with the second battery unit; the third side plate comprises:

[0027] A third side plate body is arranged along the second direction and connected with one side of the second battery unit provided with the explosion-proof valve;

[0028] A third glue blocking member is arranged between the third side plate body and the second battery unit and connected with the third side plate body, and is attached to the second battery unit;

[0029] A third sealing member is arranged on one side of the third side plate body away from the third glue blocking member and connected with the third side plate body, and is attached to the second plate member adjacent to it;

[0030] The third side plate further has a plurality of third pressure relief holes arranged along the second direction, the third pressure relief holes penetrating through the third sealing member, the third side plate body, the first glue blocking member, and communicating with at least one second air inlet hole on the second plate member adjacent to it.

[0031] In some embodiments, the single battery comprises a pole, and the pole and the explosion-proof valve are on different side walls of the single battery.

[0032] In some embodiments, the box further comprises a third plate member extending along the first direction, the third plate member and the first plate member are configured as side walls of the box and enclosed to form the accommodation cavity;

[0033] The second plate member is arranged in the accommodation cavity along the second direction and connected with the third plate member, the second plate member is configured as a cross beam of the box to divide the accommodation cavity into a plurality of accommodation spaces, and the first battery unit or the second battery unit is arranged in the accommodation space.

[0034] In some embodiments, the third plate member has a third exhaust passage and an exhaust hole communicating with the third exhaust passage, the third exhaust passage respectively communicates with the first exhaust passage and the second exhaust passage, the exhaust hole is arranged on one side of the third plate member away from the accommodation cavity, and the exhaust hole is configured to communicate the internal environment of the battery pack with the external environment.

[0035] In a second aspect, the embodiments of the present application also provide a power consumption device, which comprises any one of the above-mentioned battery packs.

[0036] One or more embodiments of the present application have one or more of the following advantages:

[0037] Provided is a battery pack, comprising a box body and a first battery unit, wherein the box body comprises a first plate and a second plate oppositely arranged along a first direction; the first battery unit is arranged between the first plate and the second plate, and comprises a first battery pack and a second battery pack arranged along the first direction and an elastic assembly arranged between the first battery pack and the second battery pack; the first battery pack and the second battery pack each comprise a plurality of single batteries arranged along a second direction; the single batteries are provided with explosion-proof valves; the explosion-proof valves of the first battery pack are arranged towards the first plate; the explosion-proof valves of the second battery pack are arranged towards the second plate; and the elastic assembly is in elastic abutment with the first battery pack and the second battery pack, respectively. The first plate is provided with a first exhaust passage and a plurality of first air inlets communicating with the first exhaust passage, and each first air inlet is arranged corresponding to at least one explosion-proof valve in the first battery pack. The second plate is provided with a second exhaust passage and a plurality of second air inlets communicating with the second exhaust passage, and each second air inlet is arranged corresponding to at least one explosion-proof valve in the second battery pack. That is, first, the explosion-proof valves of each battery pack are arranged towards the adjacent plate (the first plate or the second plate), and this arrangement ensures that when the battery pack is in thermal runaway, the gas and heat can be quickly introduced into the corresponding exhaust passage, avoiding the influence on other battery packs. Second, the first exhaust passage and the second exhaust passage are designed to be connected with the first air inlets and the second air inlets, respectively. The independent exhaust passages enable the heat and gas to be quickly discharged to the outside of the battery pack, achieving thermal-electric separation and improving the safety and reliability of the battery pack. In addition, the single batteries are arranged in an interleaved manner in the battery pack, which optimizes the space utilization, improves the energy density of the battery pack, and helps to improve the heat dissipation performance. Through the combination of these technical means, the battery pack of the embodiment has been significantly improved in safety, space utilization and heat dissipation management, ensuring the efficient and reliable operation of the battery system. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0039] Figure 1 A schematic diagram of the overall structure of the battery pack provided by the embodiment of the present application is shown in the figure.

[0040] Figure 2 A schematic diagram of the structure of the box body provided by the embodiment of the present application is shown in the figure.

[0041] Figure 3Another overall structure schematic diagram of the battery pack provided by the embodiment of the present application;

[0042] Figure 4 Another overall structure schematic diagram of the battery pack provided by the embodiment of the present application;

[0043] Figure 5 A double battery pack structure schematic diagram provided by the embodiment of the present application;

[0044] Figure 6 A structure schematic diagram of the first side plate towards the first battery pack provided by the embodiment of the present application;

[0045] Figure 7 A structure schematic diagram of the first side plate towards the first plate member side provided by the embodiment of the present application;

[0046] Figure 8 A structure schematic diagram of the second side plate towards the second battery pack provided by the embodiment of the present application;

[0047] Figure 9 A structure schematic diagram of the second side plate towards the second plate member side provided by the embodiment of the present application;

[0048] Figure 10 A structure schematic diagram of the single battery provided by the embodiment of the present application;

[0049] Figure 11 Another structure schematic diagram of the single battery provided by the embodiment of the present application;

[0050] Figure 12 A filter screen setting position schematic diagram provided by the embodiment of the present application;

[0051] Figure 13 A structure schematic diagram of one side of the third side plate provided by the embodiment of the present application;

[0052] Figure 14 A structure schematic diagram of the other side of the third side plate provided by the embodiment of the present application;

[0053] Reference signs:

[0054] X-first direction; Y-second direction;

[0055] 10-box; 11-first plate member; 111-first exhaust passage; 112-first air inlet hole; 12-second plate member; 121-second exhaust passage; 122-second air inlet hole; 13-third plate member; 131-third exhaust passage; 132-exhaust hole; 14-filter screen;

[0056] 20 - first battery unit; 21 - first battery pack; 211 - single battery cell; 2111 - explosion-proof valve; 2112 - pole; 22 - elastic assembly; 221 - support plate; 222 - elastic piece; 23 - second battery pack;

[0057] 30 - second battery unit; 31 - third battery pack;

[0058] 40 - third side plate; 41 - third side plate body; 42 - third glue blocking piece; 43 - third sealing piece; 44 - third pressure relief hole; 45 - third mica paper;

[0059] 50 - first side plate; 51 - first side plate body; 52 - first glue blocking piece; 53 - first sealing piece; 54 - first pressure relief hole; 55 - first mica paper;

[0060] 60 - second side plate; 61 - second side plate body; 62 - second glue blocking piece; 63 - second sealing piece; 64 - second pressure relief hole; 65 - second mica paper;

[0061] 70 - accommodating cavity; 71 - accommodating space. DETAILED DESCRIPTION

[0062] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0063] In the description of the present application, it needs to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one of which can be one, two or more, unless otherwise specifically limited. In the description of the present application, "vertical" means completely vertical at 90° or almost completely vertical, for example, within the range of 80°-100°, it is considered as vertical, similarly, "parallel" means completely parallel or almost completely parallel, for example, within the range of 10° of complete parallel, it is considered as parallel.

[0064] It should also be noted that in the drawings of the present application, the arrow marked X indicates the first direction X, and the arrow marked Y indicates the second direction Y. The first direction X and the second direction Y are introduced to facilitate the description of the structural positional relationship of the battery pack, and to facilitate understanding of the structure. In the embodiments of the present application, the first direction X is the arrangement direction of the longitudinal beam in the battery pack; the second direction Y is the arrangement direction of the plurality of battery monomers, and is also the pressure relief direction of the explosion-proof valve; and the first direction X and the second direction Y intersect with each other, and further, the first direction X and the second direction Y are perpendicular to each other.

[0065] In the present application, the monomer battery can include a lithium ion secondary battery monomer, a lithium ion primary battery monomer, a lithium-sulfur battery monomer, a sodium lithium ion battery monomer, a sodium ion battery monomer or a magnesium ion battery monomer, etc. The embodiments of the present application are not limited thereto. The monomer battery can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc. The embodiments of the present application are also not limited thereto.

[0066] The battery pack mentioned in the embodiments of the present application refers to a single physical module including one or more monomer batteries to provide higher voltage and capacity. The battery pack generally includes a box for packaging one or more monomer batteries. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery monomer.

[0067] The battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive electrode tab, a negative electrode tab, and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode tab and the negative electrode tab to work. The positive electrode tab includes a positive electrode current collector and a positive electrode active material layer, and the positive electrode active material layer is coated on the surface of the positive electrode current collector. The positive electrode current collector without the positive electrode active material layer protrudes from the positive electrode current collector with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer serves as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate. The negative electrode tab includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector. The negative electrode current collector without the negative electrode active material layer protrudes from the negative electrode current collector with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer serves as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon. The material of the separator can be PP (polypropylene) or PE (polyethylene). The separator has electronic insulation and is used to isolate adjacent positive electrode tabs and negative electrode tabs to prevent short circuit between adjacent positive electrode tabs and negative electrode tabs. The separator has a large number of through micro-holes, which can ensure the free passage of electrolyte ions and have good permeability to lithium ions, so the separator basically cannot block the passage of lithium ions. In addition, the electrode assembly can be a winding type structure or a stacking type structure, and the embodiments of the present application are not limited thereto.

[0068] Currently, in the field of electric passenger car battery pack PACK, CTP (Cell to Pack) integration has become the mainstream solution. However, in most CTP solutions, the explosion-proof valve of the battery cell is connected with the strong current in the same space area, which increases the risk of heat diffusion and short circuit fire when the battery cell occurs thermal runaway.

[0069] In order to optimize this problem, in the existing thermal-electric separation scheme, the explosion-proof valve of the battery cell is usually designed at the top or bottom of the battery cell. When the explosion-proof valve is located at the top, a separate flue needs to be designed, which increases the complexity of the structure. When the explosion-proof valve is located at the bottom, the bottom of the battery cell is usually in contact with the liquid cooling plate, which may affect the thermal management design of the entire battery pack and increase the risk of use of the battery pack.

[0070] Therefore, the embodiments of the present application provide a battery pack, which realizes thermal-electric separation and does not increase the complexity of the structure of the battery pack and does not respond to the thermal management function of the bottom liquid cooling plate, to solve at least part of the above technical problems.

[0071] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 10 , Figure 11 ,Figure 1 A schematic diagram of an overall structure of a battery pack provided by an embodiment of the present application, Figure 2 A schematic diagram of a structure of a box provided by an embodiment of the present application, Figure 10 A schematic diagram of a structure of a single battery provided by an embodiment of the present application, Figure 11 A schematic diagram of another structure of a single battery provided by an embodiment of the present application. The battery pack of the embodiment of the present application has a first direction X and a second direction Y intersecting with each other, and includes a box 10 and a first battery unit 20. The box 10 includes a first plate 11 and a second plate 12 oppositely arranged along the first direction X. The first battery unit 20 is arranged between the first plate 11 and the second plate 12, and includes a first battery group 21 and a second battery group 23 arranged along the first direction X, and an elastic assembly 22 arranged between the first battery group 21 and the second battery group 23. The first battery group 21 and the second battery group 23 each include a plurality of single batteries 211 arranged along the second direction Y. The single battery 211 has an explosion-proof valve 2111. The explosion-proof valve 2111 of the first battery group 21 is arranged toward the first plate 11, and the explosion-proof valve 2111 of the second battery group 23 is arranged toward the second plate 12. The elastic assembly 22 elastically abuts against the first battery group 21 and the second battery group 23, respectively. The first plate 11 has a first exhaust passage 111 and a plurality of first air inlets 112 communicating with the first exhaust passage 111. Each first air inlet 112 is arranged corresponding to at least one explosion-proof valve 2111 of the first battery group 21. The second plate 12 has a second exhaust passage 121 and a plurality of second air inlets 122 communicating with the second exhaust passage 121. Each second air inlet 122 is arranged corresponding to at least one explosion-proof valve 2111 of the second battery group 23.

[0072] It can be understood that the first battery unit 20 includes the first battery pack 21 and the second battery pack 23 arranged along the first direction X, which means that the first battery unit 20 is actually a design of a double-battery module. Specifically, the first battery pack 21 and the second battery pack 23 are each composed of a plurality of single batteries 211, which are usually connected in series or in parallel to meet specific voltage and capacity requirements. In this embodiment, a resilient component 22 is arranged between the first battery pack 21 and the second battery pack 23 in the double-battery module, which provides a buffering and shock-absorbing function. When the battery pack is subjected to external impact or vibration, the resilient component 22 can reduce the direct impact on the single batteries 211, protecting the structural integrity of the first battery pack 21 and the second battery pack 23. The resilient component 22 can compensate for thermal expansion, which may occur during the charging and discharging process of the battery pack, causing the volume to expand. The resilient component 22 adapts to this volume change, preventing excessive compression between the first battery pack 21 and the second battery pack 23, thereby prolonging the service life of the battery pack. By providing appropriate elastic support, the resilient component 22 helps maintain the stable arrangement of the first battery pack 21 and the second battery pack 23 in the first battery unit 20, preventing displacement or loosening due to vibration or thermal expansion. Furthermore, the resilient component 22 can evenly distribute the stress inside the first battery unit 20, avoiding local stress concentration and thus reducing the risk of damage to the first battery unit 20. In addition, when the first battery unit 20 is installed into the box body 10, the first battery pack 21 and the second battery pack 23 are compressed along the first direction X. At this time, the gap between the first battery pack 21 and the second battery pack 23 is compressed, and the resilient component 22 can absorb and alleviate the stress generated by the compression, ensuring that the gap between the first battery pack 21 and the second battery pack 23 can adapt to this change without damaging the first battery unit 20. This design not only helps maintain the close arrangement of the first battery pack 21 and the second battery pack 23, preventing loosening, but also provides additional stability and protection during installation, further enhancing the overall reliability and safety of the battery pack. In summary, the resilient component 22 plays multiple roles of protection, stabilization, and adaptive adjustment in the battery pack, significantly improving the safety and reliability of the battery system.

[0073] It should be noted that, as shown in Figure 10 and Figure 11 , the single battery 211 includes a pole 2112 and an explosion-proof valve 2111 on different side walls of the single battery 211. The single battery 211 has two types, one of which opens the explosion-proof valve 2111 on the positive side of the single battery 211 (as shown in Figure 10 ), and the other of which opens the explosion-proof valve 2111 on the negative side of the single battery 211 (as shown in Figure 11The two types of monomer batteries 211 are arranged in an interleaved manner to ensure that the explosion-proof valves 2111 of all monomer batteries 211 are located on the same side. This design, first of all, improves safety because arranging the explosion-proof valves 2111 on the same side can uniformly guide the release direction of gas and heat when the battery experiences thermal runaway, reducing the impact on other monomer batteries 211 and reducing the risk of heat spreading. Secondly, in terms of structural optimization, the interleaved arrangement design can better utilize space and improve the energy density of the first battery pack 21 and the second battery pack 23. This arrangement helps to accommodate more monomer batteries 211 in a limited space while maintaining good heat dissipation performance. In addition, the design of the explosion-proof valves 2111 on the same side facilitates maintenance and monitoring. The technician can more easily check and replace the first battery pack 21 and / or the second battery pack 23, ensuring the normal operation of the first battery pack 21 and the second battery pack 23. Finally, interleaved arrangement helps to improve the heat dissipation path, allowing heat to be more evenly distributed and dissipated, preventing local overheating and improving the overall performance and lifespan of the first battery pack 21 and the second battery pack 23. Through this interleaved arrangement, the double battery module not only improves safety and reliability, but also optimizes space utilization and heat dissipation management, making it an efficient battery design solution.

[0074] As Figure 1As shown, in the present embodiment, the first plate member 11 and the second plate member 12 are oppositely arranged, and the first plate member 11 and the second plate member 12 are two side walls of the box body 10. The second plate member 12 is provided with a plurality of second air inlet holes 122 on the side facing the first battery unit 20. There is only one first battery unit 20 between the first plate member 11 and the second plate member 12. The first battery unit 20 has a first battery pack 21 and a second battery pack 23. The explosion-proof valve 2111 in the first battery pack 21 is arranged towards the first plate member 11, and the explosion-proof valve 2111 in the second battery pack 23 is arranged towards the second plate member 12. The explosion-proof valve 2111 in the first battery pack 21 discharges pressure from the first air inlet hole 112 into the first exhaust passage 111, and the first exhaust passage 111 discharges the gas flow to the outside of the battery pack, thereby effectively isolating the heat and gas in the first battery pack 21 from the outside of the battery pack, avoiding the influence on the second battery pack 23. The explosion-proof valve 2111 in the second battery pack 23 enters the second exhaust passage 121 from the second air inlet hole 122, and the second exhaust passage 121 discharges the gas flow to the outside of the battery pack, thereby effectively isolating the heat and gas in the second battery pack 23 from the outside of the battery pack, avoiding the influence on the first battery pack 21. Such a design ensures that when the first battery pack 21 and / or the second battery pack 23 undergoes thermal runaway, the gas and heat can quickly enter the exhaust passage through the corresponding air inlet hole. Through this design, the heat and current paths are effectively separated. The existence of the first exhaust passage 111 and the second exhaust passage 121 ensures that the heat and gas can be quickly discharged without affecting the electrical performance of the first battery pack 21 and the second battery pack 23. This thermal-electric separation design not only improves the safety of the first battery unit 20, but also enhances the overall reliability of the battery system.

[0075] Therefore, in the present embodiment, the explosion-proof valves 2111 of the first battery pack 21 and the second battery pack 23 are arranged towards the corresponding plate member (the first plate member 11 or the second plate member 12). This directional arrangement ensures that when the battery pack undergoes thermal runaway, the gas and heat can be quickly introduced into the corresponding exhaust passage, avoiding the influence on the adjacent battery pack. Secondly, the first exhaust passage 111 and the second exhaust passage 121 are designed to be connected with the first air inlet hole 112 and the second air inlet hole 122 respectively. The independent exhaust passages enable the heat and gas to be quickly discharged to the outside of the battery pack, achieving thermal-electric separation and improving the safety and reliability of the battery pack. In addition, the single batteries 211 in the first battery pack 21 and the second battery pack 23 are arranged in a staggered manner. This arrangement optimizes the space utilization, improves the energy density of the first battery pack 21 and the second battery pack 23, and helps to improve the heat dissipation performance. Through the combination of these technical means, the battery pack of the present embodiment has been significantly improved in safety, space utilization and heat dissipation management, ensuring the efficient and reliable operation of the battery system.

[0076] In some embodiments, refer to Figure 2 and Figure 3 , Figure 3 Another overall structure of the battery pack is provided in the embodiments of the present application. In the embodiments of the present application, two first battery units 20 are arranged in the first direction X. Specifically, the first plate member 11 has two, and the two first plate members 11 are two opposite side walls of the box 10. The second plate member 12 is arranged between the two first plate members 11, and the second plate member 12 is provided with a plurality of second air inlet holes 122 on both sides in the first direction X. One of the first battery units 20 is adjacent to one of the first plate members 11, and the other first battery unit 20 is adjacent to the other first plate member 11. The first battery unit 20 has a first battery pack 21 and a second battery pack 23. The explosion-proof valve 2111 of the first battery pack 21 in each first battery unit 20 is arranged to face the adjacent first plate member 11, and the explosion-proof valve 2111 in the second battery pack 23 is arranged to face the second plate member 12. This directional arrangement ensures that when the first battery pack 21 and / or the second battery pack 23 experiences thermal runaway, the gas and heat can be quickly introduced into the corresponding exhaust passage. The first plate member 11 and the second plate member 12 are respectively provided with an exhaust passage and a plurality of air inlet holes. The first plate member 11 is provided with a first air inlet hole 112 and a first exhaust passage 111, and the second plate member 12 is provided with a second air inlet hole 122 and a second exhaust passage 121. Each air inlet hole corresponds to the explosion-proof valve 2111 in the adjacent first battery pack 21 or second battery pack 23, ensuring that the gas and heat can quickly enter the exhaust passage through the air inlet hole. When the first battery unit 20 experiences thermal runaway, the explosion-proof valve 2111 of the first battery pack 21 opens, and the released gas and heat enter the first exhaust passage 111 through the first air inlet hole 112. The first exhaust passage 111 exhausts the gas and heat to the outside of the battery pack; and / or the explosion-proof valve 2111 of the second battery pack 23 opens, and the released gas and heat enter the second exhaust passage 121 through the second air inlet hole 122. The second exhaust passage 121 also exhausts the gas and heat to the outside. That is, the embodiments of the present application use independent exhaust passages, and the heat and current paths are effectively separated. The presence of the first exhaust passage 111 and the second exhaust passage 121 ensures that the heat and gas can be quickly exhausted without affecting the electrical performance of the first battery pack 21 and the second battery pack 23. This design not only improves the safety of the battery unit, but also enhances the overall reliability of the battery system.

[0077] In some embodiments, refer to Figure 4 , Figure 4Another overall structure schematic diagram of the battery pack provided in the embodiments of the present application is shown. The second plate member 12 is provided with a plurality of second plate members 12 along the first direction X, and a second battery unit 30 is arranged between two adjacent second plate members 12. The second battery unit 30 is provided with an explosion-proof valve 2111 on at least one side in the first direction X. The explosion-proof valve 2111 in the second battery unit 30 corresponds to the second air inlet hole 122 on the adjacent second plate member 12.

[0078] It should be noted that the second plate member 12 is provided with a plurality of second plate members 12 along the first direction X, which means that the second plate member 12 can be provided with two or more than two along the first direction X, and the second plate member 12 is provided with a plurality of second air inlet holes 122 on at least one side in the first direction X. It can be understood that the second plate member 12 is provided with a second air inlet hole 122 on either side in the first direction X, or the second plate member 12 is provided with a second air inlet hole 122 on both sides in the first direction X. Specifically, the second battery unit 30 has two types. One is that the second battery unit 30 is designed as a single battery module, which has a third battery group 31 provided with an explosion-proof valve 2111 on either side in the first direction X, that is, the second battery unit 30 is provided with an explosion-proof valve 2111 on either side in the first direction X. The other is that the second battery unit 30 is designed as a double battery module, which has two third battery groups 31 provided with an explosion-proof valve 2111 on the opposite sides in the first direction X, that is, the second battery unit 30 is provided with an explosion-proof valve 2111 on both sides in the first direction X.

[0079] In the embodiments of the present application, two first battery units 20 and one second battery unit 30 are arranged along the first direction X, the second battery unit 30 is arranged between the two first battery units 20, and the second plate member 12 is arranged between the second battery unit 30 and the first battery unit 20. The first plate member 11 has two first plate members 11, which are two opposite side walls in the box 10, and the two second plate members 12 are arranged between the two first plate members 11.

[0080] It should be noted that, as Figure 4As shown, the second plate member 12 is provided with a plurality of second air inlet holes 122 on both sides thereof in the first direction X, and the second battery unit 30 is designed as a double battery module. Specifically, one first battery unit 20 is adjacent to one first plate member 11, and the other first battery unit 20 is adjacent to the other first plate member 11. The first battery unit 20 has a first battery pack 21 and a second battery pack 23, and the explosion-proof valve 2111 of the first battery pack 21 in each first battery unit 20 is arranged towards the adjacent first plate member 11, and the explosion-proof valve 2111 of the second battery pack 23 is arranged towards the adjacent second plate member 12. The second battery unit 30 has two groups of third battery packs 31, and the explosion-proof valve 2111 of one group of third battery packs 31 is arranged towards the adjacent second plate member 12, and the explosion-proof valve 2111 of the other group of third battery packs 31 is arranged towards the adjacent second plate member 12. The heat and gas of the first battery pack 21 adjacent to the first plate member 11 in each first battery unit 20 are discharged to the external environment through the first air inlet hole 112 and the first exhaust passage 111 of the adjacent first plate member 11; the heat and gas of the second battery pack 23 adjacent to the second plate member 12 in each first battery unit 20 are discharged to the external environment through the second air inlet hole 122 and the second exhaust passage 121 of the adjacent second plate member 12. The heat and gas discharged by the explosion-proof valves 2111 on both sides of the second battery unit 30 are discharged to the external environment through the second air inlet hole 122 and the second exhaust passage 121 on one second plate member 12. This design realizes effective thermal-electric separation by providing a plurality of second plate members 12 and corresponding air inlet holes and exhaust passages in the battery pack. The heat and gas of each battery unit can be quickly discharged to the external environment, avoiding the influence on other battery packs, thereby improving the safety and reliability of the battery pack.

[0081] It should be noted that the second plate 12 has multiple second air inlets 122 on either side in the first direction X, and the second battery unit 30 is a single-cell module design. Specifically, one first battery unit 20 is adjacent to one first plate 11, and another first battery unit 20 is adjacent to another first plate 11. The first battery unit 20 has a first battery pack 21 and a second battery pack 23. The explosion-proof valve 2111 of the first battery pack 21 in each first battery unit 20 is facing the adjacent first plate 11, and the explosion-proof valve 2111 of the second battery pack 23 is facing the adjacent second plate 12. The second battery unit 30 has a third battery pack 31. The explosion-proof valve 2111 of the third battery pack 31 faces any one of the second plates 12. The second plates 12 facing the explosion-proof valve 2111 of the third battery pack 31 have multiple second air inlets 122 on both sides in the first direction X to facilitate the discharge of gas and heat. The other second plate 12 only needs to have a second air inlet 122 on the side facing the first battery unit 20. In this configuration, the heat and gas from the first battery pack 21 in the first battery unit 20 are discharged to the external environment through the first air inlet 112 and the first exhaust channel 111 of the first plate 11. The heat and gas from the second battery pack 23 are discharged to the external environment through the second air inlet 122 and the second exhaust channel 121 of its adjacent second plate 12. The heat and gas discharged from the explosion-proof valve 2111 of the second battery unit 30 are discharged to the external environment through the second air inlet 122 and the second exhaust channel 121 on its facing second plate 12. This design ensures that the heat and gas of each battery unit can be discharged quickly, avoiding the impact on other battery packs, thereby improving the safety and reliability of the battery pack. By reasonably setting the air inlet and exhaust channels, the battery pack achieves efficient thermoelectric separation.

[0082] In some embodiments, please refer to Figure 5 , Figure 5 This is a schematic diagram of a dual-battery pack structure provided in an embodiment of this application. The elastic component 22 includes a support plate 221 and an elastic member 222. The support plate 221 is disposed along the second direction Y. The elastic member 222 is disposed on both sides of the support plate 221 in the first direction X and is connected to the support plate 221. The elastic member 222 is connected to its adjacent first battery pack 21 and second battery pack 23 respectively.

[0083] It should be noted that the support plate 221 is arranged along the second direction Y, providing a stable structural foundation to ensure the alignment of the first battery pack 21 and the second battery pack 23 in the battery pack. The support plate 221 helps to evenly distribute the load inside the battery pack, preventing local stress concentration, thereby reducing the risk of damage to the first battery pack 21 and the second battery pack 23. In addition, the support plate 221 enhances the stability of the first battery pack 21 and the second battery pack 23 by providing a solid support surface, preventing displacement or loosening during transportation or use.

[0084] The elastic member 222 is made of compressible and resilient silicone foam, which can effectively absorb and alleviate the impact of external impact or vibration on the first battery pack 21 and the second battery pack 23, protecting the structural integrity of the first battery pack 21 and the second battery pack 23. During the charging and discharging process of the battery, the first battery pack 21 and the second battery pack 23 may generate heat causing volume expansion, and the elastic member 222 can adapt to such volume changes, preventing excessive compression between the first battery pack 21 and the second battery pack 23, thereby prolonging the service life of the battery pack. The elastic member 222 can also absorb and alleviate the stress generated by the compression between the first battery pack 21 and the second battery pack 23, ensuring that the gap between the first battery pack 21 and the second battery pack 23 can adapt to such changes without damaging the battery cells. In addition, the elastic member 222 is connected with the support plate 221 and the adjacent first battery pack 21 or second battery pack 23, respectively, ensuring the fixed and stable arrangement of the first battery pack 21 and the second battery pack 23 in the battery pack.

[0085] Specifically, in the battery pack design, the elastic element 222 can be fixed using strong double-sided adhesive to ensure a stable connection between the first battery pack 21 and the support plate 221, and between the second battery pack 23 and the support plate 221. The elastic element 222 is made of silicone foam, a material with excellent cushioning and shock absorption properties, effectively absorbing external impacts and vibrations. During installation, firstly, strong double-sided adhesive is applied to one side of the elastic element 222 and it is adhered to the support plate 221. Ensure the elastic element 222 is accurately positioned and apply appropriate pressure to enhance adhesion, ensuring it is firmly fixed to the support plate 221. Strong double-sided adhesive is also applied to the other side of the elastic element 222. Then, one elastic element 222 is aligned and adhered to the first battery pack 21, ensuring accurate positioning and applying sufficient pressure to ensure a firm adhesion. Next, using the same method, the other elastic element 222 is adhered to the second battery pack 23. It should be noted that, alternatively, one elastic member 222 can be aligned and adhered to the second battery pack 23, ensuring accurate positioning and applying sufficient pressure to ensure a firm adhesion. Then, using the same method, another elastic member 222 is adhered to the first battery pack 21. Through this installation method, the elastic member 222 provides a reliable connection and support between the support plate 221 and the first battery pack 21, and between the support plate 221 and the second battery pack 23. This design not only simplifies the installation process but also improves the overall stability and durability of the battery pack, ensuring effective resistance to factors such as vibration and thermal expansion during use.

[0086] In some embodiments, such as Figure 5 As shown, the width of the elastic element 222 in the first direction X is W1, satisfying 1mm ≤ W1 ≤ 15mm. This width range design ensures that the elastic element 222 provides sufficient cushioning and shock absorption performance without occupying excessive space, thereby optimizing the overall size and layout of the battery pack. Specifically, the width W1 of the elastic element 222 in the first direction X can be any value or a range between any two values ​​from 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, and 15mm. Choosing an appropriate width W1 can be adjusted according to specific application requirements to achieve optimal performance and space utilization. For example, a width close to 15mm can be chosen when higher shock absorption performance is required, while a width close to 1mm can be chosen when space is limited. Through this flexible design, the elastic element 222 can provide effective support and protection in different application scenarios. In some embodiments, please refer to... Figure 1 , Figure 6 , Figure 7 As shown, Figure 6A structural schematic view of a first side plate provided by an embodiment of the present application towards a first battery pack, Figure 7 A structural schematic view of a first side plate provided by an embodiment of the present application towards a first plate. The battery pack further comprises a first side plate 50 arranged on and connected with one side of the first battery pack 21 towards the first plate 11. Specifically, the first side plate 50 comprises a first side plate body 51, a first glue blocking member 52, and a first sealing member 53. The first side plate body 51 is arranged along the second direction Y and connected with the first battery pack 21. The first glue blocking member 52 is connected with the first side plate body 51 and arranged on a side of the first side plate body 51 away from the first plate 11 and in contact with the first battery pack 21. The first sealing member 53 is arranged on and connected with a side of the first side plate body 51 towards the first plate 11 and in contact with the first plate 11. The first side plate 50 further comprises a plurality of first pressure relief holes 54 arranged along the second direction Y, which penetrate through the first sealing member 53, the first side plate body 51, and the first glue blocking member 52 and are in communication with at least one first air inlet hole 112 on the first plate 11.

[0087] It should be noted that the main functions of the first side plate 50 in the battery pack are to provide structural support, sealing protection, and pressure relief. The first side plate body 51 is arranged along the second direction Y and connected with the first battery pack 21, providing necessary structural support to ensure the stability of the first battery pack 21 in the battery pack and connecting the first battery pack 21 with the first plate 11, thereby enhancing the overall rigidity and stability of the battery pack. The first glue blocking member 52 is connected with the first side plate body 51 and arranged on a side away from the first plate 11 and in contact with the first battery pack 21, mainly serving to protect the first battery pack 21 from direct external environmental impact and providing a certain buffer to reduce damage to the first battery pack 21 when subjected to external force impact. The first sealing member 53 is arranged on a side of the first side plate body 51 towards the first plate 11, connected with the first side plate body 51, and in contact with the first plate 11, providing sealing to prevent external air and moisture from entering the interior of the battery pack, protecting the first battery pack 21 from environmental impact, and ensuring that the gas or liquid inside the battery pack does not leak to the external environment. The first pressure relief holes 54 penetrate through the first sealing member 53, the first side plate body 51, and the first glue blocking member 52 and are in communication with at least one first air inlet hole 112 on the first plate 11, providing a pressure relief channel to prevent excessive internal pressure in the battery pack and ensure safety, while allowing appropriate gas exchange under normal working conditions to help maintain the temperature and pressure balance inside the battery pack. In summary, the first side plate 50 ensures the structural integrity, sealing, and safety of the battery pack through the synergistic effect of its various structures.

[0088] Specifically, on the first side plate body 51, the areas other than the first pressure relief hole 54 are subjected to the glue coating process. The purpose of doing so is to enhance the sealing and structural stability of the battery pack. Specifically, the glue can fill in the tiny gaps and uneven surfaces, improve the sealing effect between the first side plate 50 and the adjacent components (the first plate member 11 and the first battery group 21), and prevent external air, moisture, or other contaminants from entering the inside of the battery pack. In addition, the glue provides a certain elasticity and cushioning effect, which helps to absorb and disperse external impact or vibration, reducing the direct impact on the first battery group 21, thereby prolonging the service life of the battery pack. The glue also increases the adhesion between the first side plate 50 and the adjacent components (the first plate member 11 and the first battery group 21), preventing the components from loosening or shifting due to vibration or impact during transportation or use, and maintaining the structural integrity of the battery pack. Some glue materials have anti-corrosion properties, which can protect the first side plate 50 and the adjacent components (the first plate member 11 and the first battery group 21) from corrosion by chemicals or environmental factors, prolonging the service life of the components. By coating the glue at non-pierced locations, the first side plate 50 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0089] Specifically, in the battery pack structure, the first glue blocking member 52 not only plays a protective and fixed role, but also further enhances its functionality by adhering to the glue on the first side plate body 51. Specifically, when the glue is coated on the first side plate body 51, the first glue blocking member 52 forms an effective barrier by adhering to the glue, preventing the glue from flowing or seeping into the first battery group 21. This adhesion not only ensures the positional stability of the first glue blocking member 52, but also enhances its barrier function. This function is crucial for maintaining the integrity and performance of the first battery group 21, as the entry of glue into the first battery group 21 can cause electrical short circuits, chemical reactions, or other adverse effects. By effectively isolating the glued area and the first battery group 21, the first glue blocking member 52 ensures the safety and reliability of the battery pack while maintaining the normal working state of the first battery group 21. In addition, the adhesion of the first glue blocking member 52 to the first side plate body 51 also provides additional structural support, preventing the components from loosening or shifting due to vibration or impact during transportation or use. This adhesion not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0090] In particular, the first seal 53, through the adhesive connection with the first side plate body 51, significantly improves the sealing performance of the battery pack, preventing external air, moisture and contaminants from entering the interior, protecting the safety and performance of the first battery group 21. The first seal 53 effectively prevents the leakage of electrolyte or other substances inside the battery pack, ensuring normal operation and safety. In addition, the first seal 53 provides a certain elasticity and cushioning effect, capable of absorbing and dispersing external vibrations and impacts, reducing the direct impact on the first battery group 21, thereby prolonging the service life. Through the adhesive connection with the first side plate body 51, the first seal 53 also enhances the structural stability of the battery pack, preventing the components from loosening or shifting during transportation or use. Certain sealing materials have anti-corrosion properties, and the first seal 53 can therefore protect the internal components from corrosion by chemical substances or environmental factors, further extending the service life. In some designs, the first seal 53 also helps manage the heat distribution of the battery pack, ensuring that the first battery group 21 operates within the optimal temperature range. Through these effects, the first seal 53 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability. In addition, the first seal 53 not only plays a sealing and structural stabilizing role in the battery pack, but also has an important relationship with the heat and gas emitted from the explosion-proof valve 2111. When the internal pressure of the battery pack is too high, the explosion-proof valve 2111 will activate to release excess heat and gas to prevent the battery pack from exploding or other dangerous situations. In this case, the first seal 53 needs to be able to withstand the high-temperature and high-pressure gas emitted from the explosion-proof valve 2111, ensuring that it can still maintain its sealing performance under extreme conditions. This means that the first seal 53 must have good heat resistance and pressure resistance to prevent failure under the impact of high-temperature gas. In addition, the first seal 53 also needs to effectively guide and disperse these gases to avoid damage to other parts of the battery pack. Through these functions, the first seal 53 not only provides sealing and protection under normal conditions, but also works in coordination with the explosion-proof valve 2111 in emergency situations to ensure the safety and stability of the battery pack.

[0091] In particular, the first pressure relief hole 54 penetrates the first seal 53, the first side plate body 51, the first glue blocking piece 52, and communicates with at least one first air inlet hole 112 on the first plate 11. It can be understood that this design allows one first pressure relief hole 54 to correspond to one, two or three explosion-proof valves 2111, thereby reducing the complexity of the structure of the battery pack. In addition, due to the arrangement of the first seal 53 and the first glue blocking piece 52, the first pressure relief hole 54 corresponding to multiple explosion-proof valves 2111 also has good sealing performance between them. This design not only simplifies the structure, but also ensures the sealing performance between each explosion-proof valve 2111 during pressure relief, further improving the safety and reliability of the battery pack.

[0092] It should be noted that the first side plate 50 also includes a first mica paper 55, which is clamped between the first sealing member 53 and the first side plate body 51 to seal the first pressure relief hole 54, or clamped between the first glue blocking member 52 and the first side plate body 51 to seal the first pressure relief hole 54. This design ensures that under normal operating conditions, the gas and liquid inside the battery pack will not leak through the first pressure relief hole 54. In addition, the first mica paper 55 is provided with a cross hole, which makes the first mica paper 55 not only seal the first pressure relief hole 54, but also not affect the function of the explosion-proof valve 2111 when it is in relief. When the explosion-proof valve 2111 is activated, heat and gas can pass through the cross hole of the first mica paper 55 smoothly, achieving effective pressure relief and exhaust. This design not only ensures the sealing of the battery pack, but also ensures the safe pressure relief function in emergency situations. Through this structure, the first mica paper 55 works with the first sealing member 53 and other components to provide multiple levels of protection and functions, ensuring the safety and reliability of the battery pack under various working conditions.

[0093] In some embodiments, referring to Figure 1 、 Figure 8 、 Figure 9 , Figure 8 a structural schematic view of the second side plate provided by the embodiments of the present application towards the second battery pack, Figure 9 a structural schematic view of the second side plate provided by the embodiments of the present application towards the second plate. The battery pack further includes a second side plate 60, which is arranged on and connected with the side of the second battery pack 23 facing the second plate 12. Specifically, the second side plate 60 includes a second side plate body 61, a second glue blocking member 62, and a second sealing member 63. The second side plate body 61 is arranged along the second direction Y and connected with the second battery pack 23. The second glue blocking member 62 is connected with the second side plate body 61 and arranged on the side of the second side plate body 61 away from the second plate 12 and in contact with the second battery pack 23. The second sealing member 63 is arranged on and connected with the side of the second side plate body 61 facing the second plate 12 and in contact with the second plate 12. The second side plate 60 also has a plurality of second pressure relief holes 64 arranged along the second direction Y, which penetrate through the second sealing member 63, the second side plate body 61, and the second glue blocking member 62 and are in communication with at least one second air inlet hole 122 on the second plate 12.

[0094] It should be noted that the main role of the second side plate 60 in the battery pack is to provide structural support, sealing protection and pressure release function. The second side plate body 61 is arranged along the second direction Y and connected with the second battery group 23, providing necessary structural support, ensuring the stability of the second battery group 23 in the battery pack, and connecting the second battery group 23 with the second plate member 12, enhancing the overall rigidity and stability of the battery pack. The second glue blocking member 62 is connected with the second side plate body 61 and arranged on the side away from the second plate member 12, and is attached to the second battery group 23. Its main role is to protect the second battery group 23, prevent the direct influence of the external environment on the second battery group 23, and provide a certain buffer to reduce the damage of the second battery group 23 when subjected to external force impact. The second sealing member 63 is arranged on the side of the second side plate body 61 facing the second plate member 12 and connected with it, and is attached to the second plate member 12, providing sealing to prevent external air and moisture from entering the inside of the battery pack, protecting the second battery group 23 from environmental influences, and ensuring that the gas or liquid inside the battery pack will not leak to the outside environment. The second pressure relief hole 64 penetrates the second sealing member 63, the second side plate body 61, the second glue blocking member 62, and is in communication with at least one second air inlet hole 122 on the second plate member 12, providing a pressure release channel to prevent the internal pressure of the battery pack from being too high to ensure safety, while allowing appropriate gas exchange under normal working conditions to help maintain the temperature and pressure balance inside the battery pack. In summary, the second side plate 60 ensures the structural integrity, sealing and safety of the battery pack through the synergistic effect of its various structures.

[0095] Specifically, on the second side plate body 61, the area except the second pressure relief hole 64 is subjected to glue coating treatment. The purpose of this is to enhance the sealing and structural stability of the battery pack. Specifically, the glue coating can fill in the tiny gaps and uneven surfaces, improve the sealing effect between the second side plate 60 and the adjacent components (the second plate member 12 and the second battery group 23), and prevent external air, moisture or other contaminants from entering the inside of the battery pack. In addition, the glue coating provides a certain elasticity and buffering effect, which helps to absorb and disperse external impact or vibration, reduces the direct influence on the second battery group 23, thereby prolonging the service life of the battery pack. The glue coating also increases the adhesion between the second side plate 60 and the adjacent components (the second plate member 12 and the second battery group 23), preventing the components from loosening or shifting due to vibration or impact during transportation or use, and maintaining the structural integrity of the battery pack. Some glue materials have anti-corrosion properties, which can protect the second side plate 60 and the adjacent components (the second plate member 12 and the second battery group 23) from corrosion by chemicals or environmental factors, prolonging the service life of the components. By coating the non-pierced position with glue, the second side plate 60 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0096] In particular, in the battery pack structure, the second glue-blocking member 62 not only serves the purpose of protection and fixation, but also further enhances its functionality through adhesion with the glue on the second side plate body 61. Specifically, when glue is applied on the second side plate body 61, the second glue-blocking member 62 forms an effective barrier by adhering to these glue materials, preventing the glue materials from flowing into or seeping into the second battery group 23. This adhesion not only ensures the positional stability of the second glue-blocking member 62, but also enhances its function as a barrier. This function is crucial for maintaining the integrity and performance of the second battery group 23, as the entry of glue materials into the second battery group 23 can cause electrical short-circuiting, chemical reactions, or other adverse effects. By effectively isolating the glue application area and the second battery group 23, the second glue-blocking member 62 ensures the safety and reliability of the battery pack while maintaining the normal working state of the second battery group 23. In addition, the adhesion of the second glue-blocking member 62 with the second side plate body 61 also provides additional structural support, preventing the loosening or displacement of components due to vibration or impact during transportation or use. This adhesion not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0097] Specifically, the second seal 63 significantly improves the sealing performance of the battery pack by adhering to the second side plate body 61, preventing external air, moisture, and contaminants from entering the interior, protecting the safety and performance of the second battery group 23. The second seal 63 effectively prevents the leakage of electrolyte or other substances inside the battery pack, ensuring normal operation and safety. In addition, the second seal 63 provides a certain elasticity and cushioning effect, capable of absorbing and dispersing external vibrations and impacts, reducing the direct impact on the second battery group 23, thereby prolonging the service life. By adhering to the second side plate body 61, the second seal 63 also enhances the structural stability of the battery pack, preventing components from loosening or shifting during transportation or use. Certain sealing materials have anti-corrosion properties, and the second seal 63 can therefore protect internal components from corrosion by chemicals or environmental factors, further extending the service life. In some designs, the second seal 63 also helps manage the heat distribution of the battery pack, ensuring that the second battery group 23 works within the optimal temperature range. Through these effects, the second seal 63 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability. In addition, the second seal 63 not only plays a sealing and structural stabilizing role in the battery pack, but also has an important relationship with the heat and gas emitted from the explosion-proof valve 2111. When the internal pressure of the battery pack is too high, the explosion-proof valve 2111 will activate to release excess heat and gas to prevent the battery pack from exploding or other dangerous situations. In this case, the second seal 63 needs to be able to withstand the high-temperature and high-pressure gas emitted from the explosion-proof valve 2111, ensuring that it can still maintain its sealing performance under extreme conditions. This means that the second seal 63 must have good heat resistance and pressure resistance to prevent failure under high-temperature gas impact. In addition, the second seal 63 also needs to effectively guide and disperse these gases to avoid damage to other parts of the battery pack. Through these functions, the second seal 63 not only provides sealing and protection under normal conditions, but also works in coordination with the explosion-proof valve 2111 in emergency situations, ensuring the safety and stability of the battery pack.

[0098] It should be noted that the second side plate 60 also includes a second mica paper 65, which is clamped between the second sealing member 63 and the second side plate body 61 to seal the second pressure relief hole 64, or the second mica paper 65 is clamped between the second glue blocking member 62 and the second side plate body 61 to seal the second pressure relief hole 64. This design ensures that under normal operating conditions, the gas and liquid inside the battery pack will not leak through the second pressure relief hole 64. In addition, the second mica paper 65 is provided with a cross hole, which makes the second mica paper 65 not only seal the second pressure relief hole 64, but also not affect the function of the explosion-proof valve 2111 when it is in the process of pressure relief. When the explosion-proof valve 2111 is activated, heat and gas can pass through the cross hole of the second mica paper 65 smoothly, achieving effective pressure relief and exhaust. This design not only ensures the sealing of the battery pack, but also ensures the safe pressure relief function in emergency situations. Through this structure, the second mica paper 65 works with the second sealing member 63 and other components to provide multiple levels of protection and functions, ensuring the safety and reliability of the battery pack under various working conditions.

[0099] Specifically, the second pressure relief hole 64 penetrates the second sealing member 63, the second side plate body 61, the second glue blocking member 62, and communicates with at least one second air inlet hole 122 on the second plate member 12. It can be understood that this design allows one second pressure relief hole 64 to correspond to one, two or three explosion-proof valves 2111, thereby reducing the complexity of the battery pack structure. In addition, due to the arrangement of the second sealing member 63 and the second glue blocking member 62, the multiple explosion-proof valves 2111 corresponding to one second pressure relief hole 64 also have good sealing between them. This design not only simplifies the structure, but also ensures the sealing between each explosion-proof valve 2111 during pressure relief, further improving the safety and reliability of the battery pack.

[0100] In some embodiments, referring to Figure 13 and Figure 14 , Figure 13 the third side plate structure provided by the embodiments of the present application is shown in the structure diagram of one side of the third side plate, Figure 14A structural schematic view of the other side of the third side plate is provided for the embodiments of the present application. The design of the battery pack further includes a third side plate 40 to enhance the structure and function of the battery pack, especially in the case of explosion-proof and pressure relief. The third side plate 40 is specially set on the side where the explosion-proof valve 2111 of the second battery unit 30 is located, and is connected with the second battery unit 30. The third side plate 40 includes a third side plate body 41, a third glue blocking piece 42, and a third sealing piece 43. The third side plate body 41 is arranged along the second direction Y and connected with the side of the second battery unit 30 where the explosion-proof valve 2111 is located. The third glue blocking piece 42 is arranged between the third side plate body 41 and the second battery unit 30 and connected with the third side plate body 41, and is in close contact with the second battery unit 30 to provide additional sealing and support. The third sealing piece 43 is arranged on the side of the third side plate body 41 away from the third glue blocking piece 42 and connected with the third side plate body 41, and is in close contact with the adjacent second plate piece 12 to ensure the sealing and safety during pressure relief. The third side plate 40 also has a plurality of third pressure relief holes 44 arranged along the second direction Y. The third pressure relief holes 44 penetrate through the third sealing piece 43, the third side plate body 41, and the third glue blocking piece 42, and are in communication with at least one second air inlet hole 122 on the adjacent second plate piece 12. This design ensures that when the explosion-proof valve 2111 is activated, heat and gas can be effectively discharged through these pressure relief holes to prevent excessive internal pressure.

[0101] It should be noted that in the embodiment of the double-battery module design, each third battery group 31 in the second battery unit 30 is provided with a third side plate 40 on the side facing the second plate piece 12. This design ensures that each third battery group 31 has an independent pressure relief channel in an emergency, improving the overall safety and reliability. The second plate piece 12 has a plurality of second air inlet holes 122 on both sides in the first direction X. These air inlet holes are in communication with the third pressure relief holes 44 to ensure that when the explosion-proof valve 2111 is activated, the gas can be smoothly discharged, further enhancing the safety performance of the battery pack.

[0102] It should be noted that in the embodiment of the single-battery module design, one third battery group 31 in the second battery unit 30 is provided with a third side plate 40 on the side where the explosion-proof valve 2111 is located. This design ensures that even in a single first battery group, the third battery group 31 can effectively release pressure through the pressure relief channel provided by the third side plate 40 in an emergency, thereby improving the overall safety and reliability of the battery pack.

[0103] It should be noted that the third side plate 40 mainly provides structural support, sealing protection and pressure release function in the battery pack. The third side plate body 41 is arranged along the second direction Y and connected with the third battery group 31 close to the second plate 12 in the second battery unit 30, providing necessary structural support to ensure the stability of the third battery group 31 in the battery pack, and connecting the third battery group 31 with the second plate 12, enhancing the overall rigidity and stability of the battery pack. The third glue blocking piece 42 is connected with the third side plate body 41 and arranged on the side of the third side plate body 41 away from the second plate 12 and close to the third battery group 31, mainly for protecting the third battery group 31 from direct impact of external environment and providing certain buffer to reduce damage to the third battery group 31 when subjected to external force impact. The third sealing piece 43 is arranged on the side of the third side plate body 41 facing the second plate 12, connected with the third side plate body 41 and close to the second plate 12, providing sealing to prevent external air and moisture from entering the inside of the battery pack, protecting the third battery group 31 from environmental impact, and ensuring that the gas or liquid inside the battery pack will not leak to the outside environment. The third pressure relief hole 44 penetrates the third sealing piece 43, the third side plate body 41 and the third glue blocking piece 42, and communicates with at least one second air inlet hole 122 on the second plate 12, providing a pressure release channel to prevent the internal pressure of the battery pack from being too high to ensure safety, while allowing proper gas exchange under normal working conditions to help maintain the temperature and pressure balance inside the battery pack. In summary, the third side plate 40 ensures the structural integrity, sealing and safety of the battery pack through the synergistic effect of its various structures.

[0104] Specifically, the area of the third side plate body 41 except the third pressure relief hole 44 is subjected to glue coating treatment. The purpose of this is to enhance the sealing and structural stability of the battery pack. Specifically, the glue coating can fill in the tiny gaps and uneven surfaces, improve the sealing effect between the third side plate 40 and the adjacent components (the second plate 12 and the third battery group 31), and prevent external air, moisture or other contaminants from entering the inside of the battery pack. In addition, the glue coating provides certain elasticity and cushioning effect, which helps to absorb and disperse external impact or vibration, reduces the direct impact on the third battery group 31, thereby prolonging the service life of the battery pack. The glue coating also increases the adhesion between the third side plate 40 and the adjacent components (the second plate 12 and the third battery group 31), preventing the components from loosening or shifting due to vibration or impact during transportation or use, and maintaining the structural integrity of the battery pack. Some glue materials have anti-corrosion properties, which can protect the third side plate 40 and the adjacent components (the second plate 12 and the third battery group 31) from corrosion by chemicals or environmental factors, prolonging the service life of the components. By coating the non-pierced position with glue, the third side plate 40 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0105] Specifically, in the battery pack structure, the third glue-blocking member 42 not only serves the purpose of protection and fixation, but also further enhances its functionality through adhesion with the glue on the third side plate body 41. Specifically, when glue is applied on the third side plate body 41, the third glue-blocking member 42 forms an effective barrier by adhering to these glue materials, preventing the glue materials from flowing into or seeping into the third battery group 31. This adhesion not only ensures the positional stability of the third glue-blocking member 42, but also enhances its function as a barrier. This function is crucial for maintaining the integrity and performance of the third battery group 31, as the entry of glue materials into the third battery group 31 can cause electrical short circuits, chemical reactions, or other adverse effects. By effectively isolating the glue application area and the third battery group 31, the third glue-blocking member 42 ensures the safety and reliability of the battery pack while maintaining the normal working state of the third battery group 31. In addition, the adhesion of the third glue-blocking member 42 with the third side plate body 41 also provides additional structural support, preventing the loosening or displacement of components due to vibration or impact during transportation or use. This adhesion not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability.

[0106] Specifically, the third seal 43, through the adhesive bonding with the third side plate body 41, significantly improves the sealing performance of the battery pack, preventing external air, moisture and contaminants from entering the interior, protecting the safety and performance of the third battery group 31. The third seal 43 effectively prevents the leakage of electrolyte or other substances inside the battery pack, ensuring normal operation and safety. In addition, the third seal 43 provides a certain elasticity and buffering effect, which can absorb and disperse external vibrations and impacts, reducing the direct impact on the third battery group 31, thereby prolonging the service life. Through the adhesive bonding with the third side plate body 41, the third seal 43 also enhances the structural stability of the battery pack, preventing the components from loosening or shifting during transportation or use. Certain sealing materials have anti-corrosion properties, and the third seal 43 can therefore protect the internal components from corrosion by chemical substances or environmental factors, further extending the service life. In some designs, the third seal 43 also helps manage the heat distribution of the battery pack, ensuring that the third battery group 31 operates within the optimal temperature range. Through these effects, the third seal 43 not only improves the sealing and safety of the battery pack, but also enhances its overall structural stability and durability. In addition, the third seal 43 not only plays a role in sealing and structural stability in the battery pack, but also has an important relationship with the heat and gas emitted from the explosion-proof valve 2111. When the internal pressure of the battery pack is too high, the explosion-proof valve 2111 will activate to release excess heat and gas to prevent the battery pack from exploding or other dangerous situations. In this case, the third seal 43 needs to be able to withstand the high-temperature and high-pressure gas emitted from the explosion-proof valve 2111, ensuring that it can still maintain its sealing performance under extreme conditions. This means that the third seal 43 must have good heat resistance and pressure resistance to prevent failure under the impact of high-temperature gas. In addition, the third seal 43 also needs to effectively guide and disperse these gases to avoid damage to other parts of the battery pack. Through these functions, the third seal 43 not only provides sealing and protection under normal conditions, but also works in coordination with the explosion-proof valve 2111 in emergency situations to ensure the safety and stability of the battery pack.

[0107] Specifically, the third pressure relief hole 44 penetrates the third seal 43, the third side plate body 41, the third glue blocking piece 42, and communicates with at least one second air inlet hole 122 on the second plate 12. It can be understood that this design allows one third pressure relief hole 44 to correspond to one, two or three explosion-proof valves 2111, thereby reducing the complexity of the structure of the battery pack. In addition, due to the arrangement of the third seal 43 and the third glue blocking piece 42, the third pressure relief hole 44 corresponding to multiple explosion-proof valves 2111 also has good sealing performance between them. This design not only simplifies the structure, but also ensures the sealing performance between each explosion-proof valve 2111 during pressure relief, further improving the safety and reliability of the battery pack.

[0108] It should be noted that the third side plate 40 also includes a third mica paper 45, which is clamped between the third sealing member 43 and the third side plate body 41 to seal the third pressure relief hole 44, or clamped between the third glue blocking member 42 and the third side plate body 41 to seal the third pressure relief hole 44. This design ensures that under normal operating conditions, the gas and liquid inside the battery pack will not leak through the third pressure relief hole 44. In addition, the third mica paper 45 is provided with a cross hole, which ensures that the third mica paper 45 not only seals the third pressure relief hole 44, but also does not affect the function of the explosion-proof valve 2111 when it is activated. When the explosion-proof valve 2111 is activated, heat and gas can pass through the cross hole of the third mica paper 45, achieving effective pressure relief and exhaust. This design not only ensures the sealing of the battery pack, but also ensures the safe pressure relief function in emergency situations. Through this structure, the third mica paper 45 works with the third sealing member 43 and other components to provide multiple levels of protection and functionality, ensuring the safety and reliability of the battery pack under various working conditions.

[0109] In some embodiments, the box 10 also includes a third plate member 13 extending along the first direction X, and the third plate member 13 and the first plate member 11 are configured as side walls of the box 10 and enclosed to form the accommodation cavity 70. The second plate member 12 is arranged in the second direction Y inside the accommodation cavity 70 and connected with the third plate member 13, and the second plate member 12 is configured as a cross beam of the box 10 to divide the accommodation cavity 70 into multiple accommodation spaces 71, and the first battery unit 20 or the second battery unit 30 is arranged in each accommodation space 71. This design not only optimizes the use of space, but also provides structural support and stability, so that the battery units can be safely and effectively accommodated and used. Through this modular design, the assembly and maintenance of the battery pack also become more convenient.

[0110] Specifically, the third plate member 13 has a third exhaust passage 131 and an exhaust hole 132 communicating with the third exhaust passage 131. The third exhaust passage 131 communicates with the first exhaust passage 111 and the second exhaust passage 121, respectively. The exhaust hole 132 is arranged on the side of the third plate member 13 facing away from the accommodation cavity 70. The exhaust hole 132 is configured to communicate the internal environment of the battery pack with the external environment. This design ensures that the gas generated inside the battery pack can be smoothly discharged through a series of exhaust passages, effectively reducing the internal pressure and preventing potential safety hazards. By arranging the exhaust hole 132 on the outside of the third plate member 13, the ventilation and heat dissipation performance of the battery pack is further enhanced, ensuring its safety and reliability under various working conditions. It can be understood that the first exhaust passage 111 is arranged on the first plate member 11 and directly connected to the first battery unit 20, responsible for collecting and guiding the gas generated by the first battery unit 20. The second exhaust passage 121 is located on the second plate member 12 and further collects gas from multiple accommodation spaces 71. These first exhaust passages 111 and second exhaust passages 121 ensure smooth flow through the connection with the third exhaust passage 131. The third exhaust passage 131 is arranged on the third plate member 13 and connected to the first exhaust passage 111 and the second exhaust passage 121, collecting gas from the entire battery pack. The gas is discharged to the external environment through the exhaust hole 132. The exhaust hole 132 is located on the outside of the third plate member 13 and is designed to effectively discharge gas while preventing external impurities from entering the battery pack. Through this multi-level exhaust passage design, the battery pack can effectively manage the internal pressure under various working conditions, ensuring safety and reliability. Each passage is carefully designed to optimize gas flow and discharge efficiency.

[0111] In some embodiments, referring to Figure 12 , Figure 12 A filter screen setting position diagram is provided for the embodiments of the present application. The battery pack further includes a filter screen 14 arranged on the first plate member 11 at the first air inlet hole 112 and on the second plate member 12 at the second air inlet hole 122. The purpose of this design is to prevent large particulate matter from entering the first exhaust passage 111 and the second exhaust passage 121, thereby protecting the integrity of the internal structure and function. By adding the filter screen 14 at the first air inlet hole 112 and the second air inlet hole 122, the battery pack can effectively block impurities such as dust and debris, ensuring the smoothness of the first exhaust passage 111 and the second exhaust passage 121 and the normal operation of the battery pack. This design not only improves the durability of the battery pack, but also enhances its reliability under various environmental conditions.

[0112] Correspondingly, the embodiments of the present application also provide a power utilization device comprising the battery pack as described in any one of the preceding embodiments.

[0113] It can be understood that the power consuming device of the present application includes all the technical features and technical effects of the aforementioned battery pack, which will not be repeated here.

[0114] Of course, the power consuming device referred to in the present application can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy and an electric tool, etc. The vehicle can be a new energy vehicle, which can be a pure electric vehicle, a hybrid vehicle or a range extended vehicle, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric plane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer, etc. The embodiments of the present application do not make special restrictions on the above power consuming devices.

[0115] The battery pack and the power consuming device provided by the embodiments of the present application are described in detail above, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions of the present application and its core idea; those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, characterized in that, The battery pack includes components having intersecting first (X) and second (Y) directions: The housing (10) includes a first plate (11) and a second plate (12) disposed opposite to each other along the first direction (X); A first battery unit (20) is disposed between the first plate (11) and the second plate (12). The first battery unit (20) includes a first battery pack (21) and a second battery pack (23) arranged along the first direction (X) and an elastic component (22) disposed between the first battery pack (21) and the second battery pack (23). The first battery pack (21) is disposed on one side of the first plate (11), and the second battery pack (23) is disposed on one side of the second plate (12). Both the first battery pack (21) and the second battery pack (23) include a plurality of individual battery cells (211) arranged along the second direction (Y). Each individual battery cell (211) has an explosion-proof valve (2111). The explosion-proof valve (2111) of the first battery pack (21) is disposed toward the first plate (11), and the explosion-proof valve (2111) of the second battery pack (23) is disposed toward the second plate (12). The elastic component (22) elastically abuts against the first battery pack (21) and the second battery pack (23) respectively. The first plate (11) has a first exhaust channel (111) and a plurality of first air inlets (112) communicating with the first exhaust channel (111), each of the first air inlets (112) being provided corresponding to at least one of the explosion-proof valves (2111) in the first battery pack (21); The second plate (12) has a second exhaust passage (121) and a plurality of second air inlets (122) communicating with the second exhaust passage (121), each of the second air inlets (122) being provided corresponding to at least one of the explosion-proof valves (2111) in the second battery pack (23).

2. The battery pack according to claim 1, characterized in that, The second plate (12) is provided with a plurality of plates along the first direction (X), and a second battery unit (30) is provided between two adjacent second plates (12). The second battery unit (30) is provided with an explosion-proof valve (2111) on at least one side of the first direction (X). The explosion-proof valve (2111) in the second battery cell (30) corresponds to the second air inlet (122) on the adjacent second plate (12).

3. The battery pack according to claim 1, characterized in that, The elastic component (22) includes: A support plate (221) is provided along the second direction (Y); An elastic element (222) is disposed on both sides of the support plate (221) in the first direction (X) and connected to the support plate (221), and the elastic element (222) is connected to the adjacent first battery pack (21) and second battery pack (23) respectively.

4. The battery pack according to claim 3, characterized in that, The width of the elastic element (222) in the first direction (X) is W1, which satisfies 1mm≤W1≤15mm.

5. The battery pack according to any one of claims 1 to 4, characterized in that, The battery pack further includes a first side plate (50), which is disposed on and connected to the side of the first battery pack (21) facing the first plate (11); the first side plate (50) includes: The first side panel body (51) is disposed along the second direction (Y) and connected to the first battery pack (21); The first baffle (52) is connected to the first side plate body (51), and the first baffle (52) is disposed on the side of the first side plate body (51) away from the first plate (11) and is in contact with the first battery pack (21); The first sealing element (53) is disposed on the side of the first side plate body (51) facing the first plate (11) and connected thereto, and is in contact with the first plate (11); The first side plate (50) also has a plurality of first pressure relief holes (54) arranged along the second direction (Y). The first pressure relief holes (54) penetrate the first seal (53), the first side plate body (51), and the first seal (52), and communicate with at least one first air inlet (112) on the first plate (11).

6. The battery pack according to any one of claims 1 to 4, characterized in that, The battery pack further includes a second side plate (60), which is disposed on and connected to the side of the first battery cell (20) facing the second plate (12); the second side plate (60) includes: The second side panel body (61) is disposed along the second direction (Y) and is connected to the second battery pack (23) in the first battery unit (20); The second baffle (62) is connected to the second side plate body (61), and the second baffle (62) is disposed on the side of the second side plate body (61) away from the second plate (12) and is attached to the second battery pack (23) in the first battery unit (20); The second sealing element (63) is disposed on the side of the second side plate body (61) facing the second plate (12) and connected thereto, and is in contact with the second plate (12); The second side plate (60) also has a plurality of second pressure relief holes (64) arranged along the second direction (Y). The second pressure relief holes (64) penetrate the second seal (63), the second side plate body (61), and the second baffle (62), and communicate with at least one second air inlet (122) on the second plate (12).

7. The battery pack according to claim 2, characterized in that, The battery pack also includes a third side plate (40), which is disposed on the side of the second battery unit (30) where the explosion-proof valve (2111) is located, and is connected to the second battery unit (30); the third side plate (40) includes: The third side plate body (41) is arranged along the second direction (Y) and is connected to the side of the second battery unit (30) where the explosion-proof valve (2111) is located; The third baffle (42) is disposed between the third side plate body (41) and the second battery unit (30) and is connected to the third side plate body (41) and is in contact with the second battery unit (30); The third sealing element (43) is disposed on the side of the third side plate body (41) away from the third sealing element (42) and connected to the third side plate body (41), and is in contact with the adjacent second plate (12); The third side plate (40) also has a plurality of third pressure relief holes (44) arranged along the second direction (Y). The third pressure relief holes (44) penetrate the third seal (43), the third side plate body (41), and the third baffle (42), and communicate with at least one second air inlet (122) on the adjacent second plate (12).

8. The battery pack according to any one of claims 1 to 4, characterized in that, The single cell (211) includes a terminal (2112), and the terminal (2112) and the explosion-proof valve (2111) are on different side walls of the single cell (211).

9. The battery pack according to claim 2, characterized in that, The housing (10) further includes a third plate (13) extending along the first direction (X), the third plate (13) and the first plate (11) being configured as sidewalls of the housing (10) and enclosing a receiving cavity (70). The second plate (12) is disposed in the cavity (70) along the second direction (Y) and connected to the third plate (13). The second plate (12) is configured as a crossbeam of the housing (10) to divide the cavity (70) into a plurality of accommodating spaces (71). The accommodating spaces (71) are provided with the first battery unit (20) or the second battery unit (30).

10. The battery pack according to claim 9, characterized in that, The third plate (13) has a third exhaust channel (131) and an exhaust hole (132) communicating with the third exhaust channel (131). The third exhaust channel (131) is connected to the first exhaust channel (111) and the second exhaust channel (121). The exhaust hole (132) is located on the side of the third plate (13) away from the receiving cavity (70). The exhaust hole (132) is configured to communicate the internal environment of the battery pack with the external environment.

11. An electrical appliance, characterized in that, The electrical device includes a battery pack as claimed in any one of claims 1 to 10.

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