Battery and electric device

Abstract

A battery (1000) and an electric device. The battery (1000) comprises: a case (10), a battery unit (20) and a smoke guide frame (30), wherein the case (10) is provided with an accommodating cavity and a smoke exhaust channel (12); the battery unit (20) and the smoke guide frame (30) are both located in the accommodating cavity; the battery unit (20) is provided with a first side and a second side arranged opposite to each other in a first direction X; the battery unit (20) comprises a first battery cell module and a second battery cell module alternately arranged and connected to each other in series; the first battery cell module and the second battery cell module each comprise battery cells (21); and each battery cell (21) is provided with a battery cell explosion-proof valve (21a), all the battery cell explosion-proof valves (21a) of the first battery cell module face the first side, and all the battery cell explosion-proof valves (21a) of the second battery cell module face the second side. The smoke guide frame (30) is provided with a plurality of smoke guide channels (31), and on the same side of the battery unit (20), all the smoke guide channels (31) on the smoke guide frame (30) correspond to all the battery cell explosion-proof valves (21a) on a one-to-one basis; and the smoke guide channels (31) correspond to smoke inlets (13a) of the smoke exhaust channels (12) on a one-to-one basis, and the smoke guide channel (31) is in communication with the corresponding battery cell explosion-proof valve (21a) and smoke inlet (13a). The provided battery can reduce the electrical risk.

Description

Batteries and electrical devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese utility model patent application with application number 2023231326505 filed with the China Patent Office on November 20, 2023. The entire contents of the patent application are incorporated into this application by reference. Technical Field

[0003] The present application relates to the field of battery technology, and specifically to a battery and an electrical device. Background Art

[0004] With the development of battery technology, batteries have been widely used in various fields due to their environmental friendliness, long battery life, and high cost-effectiveness. During battery operation, thermal runaway can occur. The high-temperature conductive material ejected from the battery cell explosion-proof valve into the battery can easily cause a short circuit in the terminal, erode the sampling wiring harness, and cause arcing, creating electrical risks.

[0005] Summary of the Invention

[0006] Based on this, it is necessary to provide a battery and an electrical device that can reduce electrical risks in order to address the above problems.

[0007] A battery, comprising a housing, a battery unit, and a smoke guide frame, wherein the housing has a receiving cavity and a smoke exhaust passage, and the battery unit and the smoke guide frame are both located in the receiving cavity;

[0008] The battery unit has a first side and a second side arranged opposite to each other along a first direction, the battery unit includes a first battery cell module and a second battery cell module arranged alternately and connected in series, the first battery cell module and the second battery cell module each include at least one battery cell or at least two battery cells connected in parallel, the battery cells have battery cell explosion-proof valves, all the battery cell explosion-proof valves of the first battery cell module face the first side, and all the battery cell explosion-proof valves of the second battery cell module face the second side;

[0009] The smoke guide frame is provided on the first side and the second side of the battery unit, and the smoke guide frame has multiple smoke guide channels. On the same side of the battery unit, all the smoke guide channels on the smoke guide frame correspond to all the battery cell explosion-proof valves one by one;

[0010] The first side and the second side of the battery unit are both provided with multiple smoke inlets of the smoke exhaust channel. On the same side of the battery unit, the smoke guiding channels correspond one-to-one to the smoke inlets of the smoke exhaust channels, and the smoke guiding channels are connected between the corresponding battery cell explosion-proof valves and the smoke inlets.

[0011] In some embodiments, the box body has at least two first beams arranged at intervals along the first direction, and at least two second beams arranged at intervals along a second direction intersecting the first direction, each adjacent two first beams and each adjacent two second beams enclose a sub-cavity, the battery unit and the smoke guide frame are arranged in the sub-cavity, and all the sub-cavities together form the accommodating cavity;

[0012] A first smoke exhaust cavity is provided in the first beam body, and the smoke inlet is provided on the surface of the first beam body facing the smoke guide frame; a second smoke exhaust cavity and a smoke outlet are provided on the first and / or last second beam body arranged along the second direction, all the smoke inlets on the first beam body are connected with the first smoke exhaust cavity and together form the air intake section of the smoke exhaust channel, and the first smoke exhaust cavity and the smoke outlet on the second beam body are connected to form the air outlet section of the smoke exhaust channel.

[0013] In some embodiments, a battery explosion-proof valve is provided at the smoke outlet.

[0014] In some embodiments, the smoke guide frame includes smoke guide portions and connecting portions alternately arranged along a second direction intersecting the first direction, and the smoke guide portion is provided with the smoke guide channel;

[0015] On the first side of the battery unit, all the smoke guide channels on the smoke guide frame are aligned one-to-one with and communicate with the battery cell explosion-proof valves of all the first battery cell modules, and all the connecting portions of the smoke guide frame are aligned one-to-one with at least some of the second battery cell modules;

[0016] On the second side of the battery unit, all the smoke guide channels on the smoke guide frame are aligned one by one with and connected to all the battery cell explosion-proof valves of all the second battery cell modules, and all the connecting parts of the smoke guide frame are aligned one by one with at least part of the first battery cell modules.

[0017] In some embodiments, the surface of the smoke guide portion facing the battery cell is provided with a plurality of smoke guide inlets arranged along the second direction, a smoke guide cavity is provided therein, and the surface of the smoke guide portion facing away from the battery cell is provided with a smoke guide outlet. In the same smoke guide portion, the smoke guide inlet, the smoke guide cavity and the smoke guide outlet are connected in sequence to form the smoke guide channel.

[0018] In some embodiments, the surface on the smoke-guiding portion where the smoke-guiding outlet is opened is a first surface, and the surface on the smoke-guiding portion where the smoke-guiding inlet is opened is a second surface. In the direction from the first surface to the second surface, the width of the smoke-guiding portion in the second direction and / or the third direction gradually decreases, and the third direction intersects with both the first direction and the second direction.

[0019] In some embodiments, the inner wall of the smoke-guiding cavity is covered with a fireproof layer.

[0020] In some embodiments, the battery further includes a mounting seat, and the mounting seat is provided on the first side and the second side of the battery unit. The mounting seat is installed on the box body on the same side of the battery unit, and the mounting seat corresponds one-to-one with the connecting portion. The mounting seat is provided on one side of the corresponding connecting portion along a third direction intersecting with both the first direction and the second direction, and is detachably connected to the corresponding connecting portion.

[0021] In some embodiments, the side of the smoke guide frame facing away from the mounting seat is bonded to the box body by thermally conductive adhesive.

[0022] In some embodiments, the battery further includes an insulating heat insulation sheet, and the first side and the second side of the battery cell are both provided with insulating heat insulation sheets. On the same side of the battery cell, the insulating heat insulation sheet is provided between the smoke guide frame and all the battery cell explosion-proof valves.

[0023] In some embodiments, the battery cell explosion-proof valve has a first boundary and a second boundary spaced apart along a third direction intersecting the first direction, and the second boundary is located on the bottom side of the first boundary; on the same side of the battery cell, the two ends of the insulating heat insulation sheet arranged along the third direction respectively extend out of the first boundary and the second boundary of the battery cell explosion-proof valve, and the length of the insulating heat insulation sheet extending out of the highest point of the first boundary and the lowest point of the second boundary is L, 1.5mm<L<2.5mm.

[0024] In some embodiments, the insulating heat insulation sheet is constructed with multiple weak portions, and on the same side of the battery unit, at least some of the weak portions on the insulating heat insulation sheet are aligned one by one with all the battery cell explosion-proof valves and all the smoke guide channels on the smoke guide frame.

[0025] In some embodiments, the weak portion is a groove structure, and the weak portion includes a first groove portion and a second groove portion, the first groove portion is surrounded to form a closed groove structure, the second groove portion is located in the area surrounded by the first groove portion, and is connected and communicated with the first groove portion, and the second groove portion is a cross-shaped structure.

[0026] In some embodiments, in the first direction, the orthographic projections of the weak portion and the smoke guide inlet of the smoke guide channel both fall within the corresponding battery cell explosion-proof valve;

[0027] The cross-sectional area of ​​the weak portion perpendicular to the first direction and the cross-sectional area of ​​the smoke guide inlet of the smoke guide channel are both smaller than the corresponding cross-sectional area of ​​the battery core explosion-proof valve perpendicular to the first direction.

[0028] In some embodiments, the cross-sectional area of ​​the weak portion perpendicular to the first direction and the cross-sectional area of ​​the smoke guide inlet of the smoke guide channel are both approximately 80% of the cross-sectional area of ​​the corresponding battery cell explosion-proof valve perpendicular to the first direction.

[0029] In some embodiments, the battery further includes a first seal, and the first side and the second side of the battery cell are both provided with a first seal, and the first seal is provided with a plurality of first avoidance holes; on the same side of the battery cell, the first seal is sealed and connected between the insulating heat insulation sheet and the smoke guide frame, and all the first avoidance holes on the first seal are aligned one by one with all the weak parts on the insulating heat insulation sheet.

[0030] In some embodiments, the first sealing member is a silicone gasket.

[0031] An electrical device comprises a battery as described in any one of the above embodiments, wherein the battery is used to provide electrical energy for the electrical device.

[0032] The above-mentioned battery and electrical device, the first side and the second side of the battery unit arranged along the first direction are both provided with a battery cell explosion-proof valve, a smoke guide frame and a smoke inlet of the smoke exhaust channel. On the same side of the battery unit, the smoke guide channel corresponds to the smoke inlet of the smoke exhaust channel one by one, and the smoke guide channel is connected between the corresponding battery cell explosion-proof valve and the corresponding smoke inlet. Therefore, the high-temperature conductive material sprayed from the battery cell explosion-proof valve follows the high-temperature flue gas through the smoke guide channel and the smoke inlet corresponding to the battery cell explosion-proof valve into the smoke exhaust channel, and flows through the smoke exhaust channel and is discharged to the outside of the battery. In this way, the high-temperature flue gas and the high-temperature conductive material can be directed to be sprayed in a directional manner, and the thermal and electrical separation of the battery can be achieved, thereby reducing the electrical risks such as the high-temperature conductive material sprayed into the battery causing a short circuit of the pole, ablation of the sampling harness in the battery, and arcing, and achieving the purpose of isolating the high-temperature conductive material from the battery cell pole, and the safety of the battery is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] FIG1 is a schematic diagram of the overall structure of a battery in one embodiment of the present application;

[0034] FIG2 is an exploded view of the battery shown in FIG1 ;

[0035] FIG3 is an enlarged schematic diagram of a local structure A in the battery shown in FIG2 ;

[0036] FIG4 is an enlarged schematic diagram of a local structure B in the battery shown in FIG2 ;

[0037] FIG5 is an enlarged schematic diagram of a local structure C in the battery shown in FIG2 ;

[0038] FIG6 is an enlarged schematic diagram of a local structure D in the battery shown in FIG2 ;

[0039] FIG7 is a schematic structural diagram of the battery frame shown in FIG1 ;

[0040] FIG8 is an enlarged schematic diagram of a local structure E in the battery shown in FIG7 ;

[0041] FIG9 is a schematic structural diagram of a battery cell, an insulating heat shield, and a first sealing member in the battery shown in FIG1 ;

[0042] FIG10 is an enlarged schematic diagram of a local structure S in the battery shown in FIG9 ;

[0043] FIG11 is an exploded view of the battery shown in FIG10 ;

[0044] FIG12 is a schematic structural diagram of the battery cell shown in FIG11 ;

[0045] FIG13 is a right side view of the battery cell shown in FIG12;

[0046] FIG14 is a left side view of the battery cell shown in FIG12;

[0047] FIG15 is a partial cross-sectional view of the battery shown in FIG1 after being inverted;

[0048] FIG16 is an enlarged schematic diagram of a local structure F of the battery shown in FIG15 ;

[0049] FIG17 is a top view of the battery shown in FIG1 ;

[0050] FIG18 is a cross-sectional view of the battery shown in FIG17 along the FF direction;

[0051] FIG19 is an enlarged schematic diagram of a local structure H in the battery shown in FIG18 ;

[0052] FIG20 is a cross-sectional view of the battery shown in FIG17 along the GG direction;

[0053] FIG21 is an enlarged schematic diagram of a local structure N in the battery shown in FIG20 ;

[0054] FIG22 is a schematic structural diagram of the smoke guide frame in the battery shown in FIG2 ;

[0055] FIG23 is a top view of the smoke guide frame shown in FIG22;

[0056] FIG24 is a cross-sectional view of the smoke guide frame shown in FIG23 along the RR direction;

[0057] FIG25 is a front view of the smoke guide frame shown in FIG22;

[0058] FIG26 is a schematic structural diagram of an insulating and heat-insulating sheet in the battery shown in FIG2 ;

[0059] FIG27 is an enlarged schematic diagram of a local structure K in the battery shown in FIG26 ;

[0060] FIG28 is a schematic structural diagram of a busbar in the battery shown in FIG2 .

[0061] Reference numerals: 1000, battery; 10, housing; 20, battery cell; 30, smoke guide frame; 40, mounting base; 50, insulating heat shield; 60, first sealing member; 70, second sealing member; 80, busbar; 90, thermally conductive adhesive; 110, housing sealing gasket; 11, sub-cavity; 12, smoke exhaust channel; 13, first beam; 13a, smoke inlet; 13b, first smoke exhaust cavity; 14, second beam; 14a, smoke outlet; 14b, second smoke exhaust cavity; 15, frame; 16, first cover; 17, second cover; 18, battery explosion-proof valve; 21, battery cell; 21a, battery cell explosion-proof valve; 21b, pole; 21c, first boundary; 21d, second boundary; 31. Smoke guide channel; 31a. Smoke guide inlet; 31b. Smoke guide cavity; 31c. Smoke guide outlet; 32. Smoke guide portion; 33. Fireproof layer; 34. Connecting portion; 41. Screw; 42. Nut; 43. Threaded hole; 51. Weak portion; 51a. First groove; 51b. Second groove; 61. First avoidance hole; 71. Second avoidance hole; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0062] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0063] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0065] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0066] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0068] Currently, market developments indicate that batteries are increasingly being used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As battery applications continue to expand, market demand is also growing.

[0069] The battery consists of multiple cells. During the operation of the battery, when the battery loses control, the high-temperature conductive material sprayed from the cell explosion-proof valve into the battery may easily cause a short circuit of the poles, ablation of the sampling harness in the battery, arcing, etc., resulting in electrical risks.

[0070] Please refer to Figures 1 to 19. To alleviate the above-mentioned problems, the applicant, after in-depth research, has designed a battery 1000. Battery 1000 includes a housing 10, battery cells 20, and a smoke guide frame 30. The housing 10 has a receiving cavity and a smoke exhaust channel 12. The battery cells 20 and the smoke guide frame 30 are both located within the receiving cavity. The battery cells 20 have a first side and a second side arranged opposite each other along a first direction X. The battery cells 20 include first and second battery cell modules arranged alternately and connected in series. The first and second battery cell modules each include at least one battery cell 21 or at least two battery cells 21 connected in parallel. The battery cells 21 have battery cell explosion-proof valves 21a. All battery cell explosion-proof valves 21a of the first battery cell module face the first side, while all battery cell explosion-proof valves 21a of the second battery cell module face the second side. A smoke guide frame 30 is provided on both the first and second sides of the battery cell 20. The smoke guide frame 30 has multiple smoke guide channels 31. On the same side of the battery cell 20, all smoke guide channels 31 on the smoke guide frame 30 correspond one-to-one with all battery cell explosion-proof valves 21a. Multiple smoke inlets 13a for the smoke exhaust channels 12 are provided on both the first and second sides of the battery cell 20. On the same side of the battery cell 20, each smoke guide channel 31 corresponds one-to-one with each smoke inlet 13a of the smoke exhaust channel 12. The smoke guide channels 31 communicate between the corresponding battery cell explosion-proof valves 21a and the smoke inlet 13a.

[0071] The housing 10 is a component that isolates the internal environment of the battery 1000 from the external environment of the battery 1000. The housing 10 can be cylindrical, rectangular, or in other shapes, depending on the needs and is not limited here. Optionally, the housing 10 is made of a material with a certain hardness and strength (such as aluminum alloy). This makes the housing 10 less likely to deform when squeezed or collided, thus providing the housing 10 with higher structural strength and improved safety performance.

[0072] The housing 10 has a storage cavity and a smoke exhaust duct 12 formed therein. This duct is used to discharge high-temperature smoke and high-temperature conductive materials generated when the battery 1000 experiences thermal runaway. Specifically, the housing 10 generally includes a first cover plate 16, a second cover plate 17, and a frame 15. The frame 15 is configured to form the storage cavity. The frame 15 is connected between the first and second cover plates 16, 17, which seal the storage cavity. The smoke exhaust duct 12 is formed within at least one of the first and second cover plates 16, 17, and the frame 15.

[0073] Depending on the orientation of the box body 10, the first cover plate 16 can be one of the top cover and the bottom cover of the box body 10, and the second cover plate 17 can be the other of the top cover and the bottom cover of the box body 10. Specifically, taking Figure 2 as an example, the first cover plate 16 is the top cover and the second cover plate 17 is the bottom cover. However, during actual installation, the box body 10 needs to be flipped 180 degrees and the first cover plate 16 is flipped to the bottom of the second cover plate 17, so that the first cover plate 16 forms the bottom cover and the second cover plate 17 forms the top cover.

[0074] In addition, in order to block water vapor and reduce the risk of external water vapor entering the box body 10, a box body sealing gasket 110 is also provided between the first cover plate 16 and the frame 15, and / or between the second cover plate 17 and the frame 15. The box body sealing gasket 110 located between the first cover plate 16 and the frame 15 is used to seal the gap between the first cover plate 16 and the frame 15, and the box body sealing gasket 110 located between the second cover plate 17 and the frame 15 is used to seal the gap between the second cover plate 17 and the frame 15.

[0075] There is no limit on the number of battery cells 21 included in the first battery cell module and the second battery cell module. For example, in Figures 10 and 12, the first battery cell module and the second battery cell 21 each include only one battery cell 21. Of course, the number of battery cells 21 in the first battery cell module and the second battery cell module is not limited to the above, and can also be other forms, as long as the battery cells 21 in the same first battery cell module or the same second battery cell module are connected in parallel, and adjacent first battery cell modules and second battery cell modules are connected in series.

[0076] The battery cell 21 has an explosion-proof valve, a positive electrode column 21b, and a negative electrode column 21b. The positive electrode column 21b and the negative electrode column 21b are arranged at both ends of the battery cell 21 along the first direction X. The battery cell explosion-proof valve 21a and the positive electrode column 21b or the negative electrode column 21b are arranged at the same end of the battery cell 21. Taking Figure 12 as an example, the battery cell explosion-proof valve 21a and the positive electrode column 21b are arranged at the same end of the battery cell 21.

[0077] In the battery 1000, the number of battery cells 20 can be one or more, depending on the specific needs. When there are multiple battery cells 20, all battery cells 20 can be arranged along a first direction X and / or a second direction Y, where the second direction Y is a direction intersecting with the first direction X. Taking Figure 1 as an example, the first direction X is the width direction of the battery 1000, and the second direction Y is the length direction of the battery 1000.

[0078] As an example, the smoke guide frame 30 can be made of glass fiber material, steel, pure mica material, etc. with high temperature resistance. Alternatively, the smoke guide frame 30 can also be made of glass fiber material, steel, pure mica material, etc. and composite materials. The specific selection can be made as needed.

[0079] The battery cell explosion-proof valve 21a, the smoke guide frame 30, and the smoke inlet 13a of the smoke exhaust channel 12 are both provided on the first and second sides of the battery cell 20 arranged along the first direction X. On the same side of the battery cell 20, the smoke guide channel 31 corresponds to the smoke inlet 13a of the smoke exhaust channel 12, and the smoke guide channel 31 communicates between the corresponding battery cell explosion-proof valve 21a and the smoke inlet 13a. Therefore, the high-temperature conductive material sprayed from the battery cell explosion-proof valve 21a follows the high-temperature flue gas through the smoke guide channel 31 corresponding to the battery cell explosion-proof valve 21a and the corresponding smoke inlet 13a into the smoke exhaust channel 12, and is discharged to the outside of the battery 1000 after flowing through the smoke exhaust channel 12. In this way, the high-temperature flue gas and the high-temperature conductive material can be guided in a directional manner for directional injection, thereby realizing the thermal and electrical separation of the battery 1000, thereby reducing the electrical risks of the high-temperature conductive material being sprayed into the battery 1000, causing the pole 21b to short-circuit, the sampling harness in the battery 1000 to burn, and arcing, etc., thereby achieving the purpose of isolating the high-temperature conductive material from the pole 21b of the battery cell 21, and significantly improving the safety of the battery 1000.

[0080] In addition, the first battery cell module and the second battery cell module each include at least one battery cell 21 or at least two battery cells 21 connected in parallel, and the battery cell 21 has a battery cell explosion-proof valve 21a. All battery cell explosion-proof valves 21a of the first battery cell module face the first side, and all battery cell explosion-proof valves 21a of the second battery cell module face the second side. Under this design, on the one hand, under the cooperation of the smoke guide frame 30 and the smoke inlet 13a, the high-temperature flue gas ejected from the battery cell explosion-proof valve 21a of the first battery cell module and the high-temperature flue gas ejected from the battery cell explosion-proof valve 21a of the second battery cell module can be dispersed to both sides of the battery unit 20 and discharged to the outside along different smoke exhaust paths, which can reduce The problem of low exhaust efficiency of high-temperature flue gas caused by the concentration of high-temperature flue gas on one side is solved, which improves the exhaust efficiency and exhaust safety; on the other hand, on the same side of the battery unit 20, different first battery cell modules or different second battery cell modules correspond to different smoke guide channels 31 and smoke inlet 13a, so that the exhaust paths of different first battery cell modules or different second battery cell modules are different, and the alternating first battery cell modules and second battery cell modules can reduce the density of the exhaust path on the same side of the battery unit 20, so as to avoid the high-temperature flue gas concentration and loss of control during exhaust due to the high density of the exhaust path on the same side of the battery unit 20, which also effectively improves the exhaust efficiency and exhaust safety.

[0081] Please refer to Figures 2 to 9 and Figures 15 to 16 again. In some optional embodiments, the box body 10 has at least two first beams 13 arranged at intervals along a first direction X, and at least two second beams 14 arranged at intervals along a second direction Y intersecting the first direction X. Every two adjacent first beams 13 and every two adjacent second beams 14 enclose a sub-cavity 11, and a battery unit 20 and a smoke guide frame 30 are arranged in the sub-cavity 11. All sub-cavities 11 are together constructed to form a accommodating cavity. The first beam body 13 has a first smoke exhaust cavity 13b therein, and a smoke inlet 13a is provided on the surface of the first beam body 13 facing the smoke guide frame 30; the first and / or last second beam body 14 arranged along the second direction Y has a second smoke exhaust cavity 14b and a smoke outlet 14a, all the smoke inlets 13a on the first beam body 13 are connected to the first smoke exhaust cavity 13b and together form the air intake section of the smoke exhaust channel 12, and the first smoke exhaust cavity 13b and the smoke outlet 14a on the second beam body 14 are connected to form the air outlet section of the smoke exhaust channel 12.

[0082] All first beams 13 and all second beams 14 are combined and constructed to form the aforementioned frame 15. The first beams 13 are either horizontal beams or vertical beams, while the second beams 14 are the other of the horizontal beams and vertical beams. Taking Figure 7 as an example, the first beams 13 are vertical beams, and the second beams 14 are horizontal beams. For ease of explanation, the following embodiments are described using the example of the first beams 13 being vertical beams and the second beams 14 being horizontal beams.

[0083] A battery unit 20 and two smoke guide frames 30 are disposed in each sub-cavity 11 . The two smoke guide frames 30 in the same sub-cavity 11 are located on a first side and a second side of the battery unit 20 .

[0084] As an example, there can be two first beams 13 and two second beams 14, which enclose a sub-cavity 11, which is equivalent to a receiving cavity. Alternatively, at least one of the first beams 13 and the second beams 14 can be two or more. As shown in FIG7 , there are three first beams 13 and three second beams 14, forming four sub-cavities 11.

[0085] If the first beam 13 is a side beam (i.e., the first beam 13 or the last beam 13 arranged along the second direction Y), a smoke inlet 13a is formed on the inner side surface of the first beam 13. If the first beam 13 is an intermediate beam located within the side beam (i.e., the remaining first beam 13 located between the first beam 13 and the last first beam 13 in the second direction Y), smoke inlets 13a are formed on both opposite side surfaces of the second beam 14 along the first direction X. If the same surface of the first beam 13 with smoke inlets 13a faces multiple sub-cavities 11 at the same time, the number of smoke inlets 13a formed on that surface must meet the needs of all sub-cavities 11 facing that surface. Taking Figures 7 and 9 as examples, the same surface of the first beam 13 with the smoke inlet 13a faces two sub-cavities 11 at the same time. The surface is located on the first side of the battery unit 20 in the two sub-cavities 11, and each battery unit 20 has 14 battery cell explosion-proof valves 21a on the first side. For example, 28 smoke inlets 13a need to be opened on the surface, of which 14 smoke inlets 13a correspond one-to-one to the 14 battery cell explosion-proof valves 21a on the first side of the battery unit 20 in one of the sub-cavities 11, and the other 14 smoke inlets 13a correspond one-to-one to the 14 battery cell explosion-proof valves 21a on the first side of the battery unit 20 in the other sub-cavity 11. In addition, the number of smoke guide channels 31 on the smoke guide frame 30 must also correspond one-to-one with the number of battery cell explosion-proof valves 21a on the same side. Continuing with reference to Figures 7 and 9, for example, if each battery cell 20 has 14 battery cell explosion-proof valves 21a on the first side, then 14 smoke guide channels 31 must also be provided on the smoke guide frame 30 within each sub-cavity 11. In this way, on the same side of the battery cell 20, a one-to-one correspondence can be achieved between the smoke guide channels 31, the smoke inlet 13a of the smoke exhaust channel 12, and the battery cell explosion-proof valve 21a, and the smoke guide channels 31 are connected between the corresponding battery cell explosion-proof valve 21a and the smoke inlet 13a.

[0086] Each first beam 13 forms an air intake section of the smoke exhaust channel 12. Each air intake section includes the first smoke exhaust cavity 13b and all smoke inlet ports 13a on the first beam 13 where it is located. It is understood that the smoke exhaust channel 12 has multiple air intake sections, and each air intake section has multiple smoke inlet ports 13a. Each second beam 14 having a second smoke exhaust cavity 14b forms an air outlet section of the smoke exhaust channel 12. Each air outlet section includes the second smoke exhaust cavity 14b and all smoke outlet ports 14a on the second beam 14 where it is located. It is understood that the smoke exhaust channel 12 has one or two air outlet sections, and each air outlet section has one or more smoke outlet ports 14a. The same second beam 14 can have one or more smoke outlet ports 14a.

[0087] The first smoke exhaust cavity 13b within each first beam 13 is connected to the second smoke exhaust cavity 14b of the second beam 14. This allows the high-temperature flue gas discharged from the cell explosion-proof valve 21a to sequentially enter through the smoke guide channel 31 corresponding to the cell explosion-proof valve 21a and the smoke inlet 13a corresponding to the cell explosion-proof valve 21a. It then flows sequentially through the first smoke exhaust cavity 13b of the first beam 13, where the smoke inlet 13a is located, the second smoke exhaust cavity 14b connected to the first smoke exhaust cavity 13b, and the smoke outlet 14a before being discharged. In this embodiment, the high-temperature flue gas and high-temperature conductive material ejected from different cell explosion-proof valves 21a sequentially pass through different smoke guide channels 31 and different smoke inlets 13a, enter the smoke exhaust channel 12, and ultimately be discharged, resulting in high smoke exhaust efficiency.

[0088] As shown in Figure 16, the high-temperature flue gas is discharged along the following paths: M10 → M11 → M12 → M13, or M10 → M11 → M12 → M9 → M4, through the first beam 13 positioned at the front in the first direction X and the second beam 14 positioned at the front in the second direction Y. The high-temperature flue gas is discharged along the following paths: M1 → M2 → M3 → M4, or M1 → M2 → M3 → M8 → M13, through the first beam 13 positioned at the back in the first direction X and the second beam 14 positioned at the front in the second direction Y. The high-temperature flue gas is discharged along the following paths: M5 → M7 → M8 → M13, or M6 → M7 → M9 → M4, through the first beam 13 positioned between the first beam 13 and the last first beam 13, and the second beam 14 positioned at the front in the second direction Y.

[0089] Referring to FIG. 2 , in some optional embodiments, a battery explosion-proof valve 18 is provided at the smoke outlet 14a. When the internal pressure of the battery 1000 is normal, the battery explosion-proof valve 18 seals the smoke outlet 14a, reducing the risk of external moisture, dust, and the like entering the battery 1000. When the internal pressure of the battery 1000 rises abnormally, high-temperature smoke and high-temperature conductive materials generated by thermal runaway of the battery 1000 are released to the outside through the battery explosion-proof valve 18, effectively preventing the battery 1000 from exploding due to excessive internal pressure.

[0090] Please refer again to Figures 1 to 6 and also to Figures 17 to 25. In some optional embodiments, the smoke guide frame 30 includes smoke guide portions 32 and connecting portions 34 alternately arranged along a second direction Y intersecting the first direction X. The smoke guide portion 32 is provided with a smoke guide channel 31. On the first side of the battery cell 20, all smoke guide channels 31 on the smoke guide frame 30 are aligned one-to-one with and connected to the battery cell explosion-proof valves 21a of all first battery cell modules, and all connecting portions 34 of the smoke guide frame 30 are aligned one-to-one with at least some of the second battery cell modules. On the second side of the battery cell 20, all smoke guide channels 31 on the smoke guide frame 30 are aligned one-to-one with and connected to all battery cell explosion-proof valves 21a of all second battery cell modules, and all connecting portions 34 of the smoke guide frame 30 are aligned one-to-one with at least some of the first battery cell modules.

[0091] Different smoke guides 32 have different smoke exhaust paths. The smoke guides 32 are separated by the connecting part 34, which can reduce the density of the smoke exhaust paths on the same side of the battery unit 20, so as to avoid the high-temperature smoke concentration and loss of control during smoke exhaust due to excessive density of the smoke exhaust paths on the same side of the battery unit 20, and also effectively improve the smoke exhaust efficiency and smoke exhaust safety.

[0092] In some embodiments, the surface of the smoke guide portion 32 facing the battery cell 20 is provided with multiple smoke guide inlets 31a arranged along the second direction Y, a smoke guide cavity 31b is provided inside the smoke guide portion 32, and the surface of the smoke guide portion 32 facing away from the battery cell 20 is provided with a smoke guide outlet 31c. In the same smoke guide portion 32, the smoke guide inlet 31a, the smoke guide cavity 31b and the smoke guide outlet 31c are connected in sequence to form a smoke guide channel 31.

[0093] It can be understood that in this embodiment, the high-temperature flue gas and high-temperature conductive material entering from different smoke guide inlets 31a on the same smoke guide part 32 are discharged through the same smoke guide outlet 31c, and the high-temperature flue gas and high-temperature conductive material entering from different smoke guide inlets 31a on different smoke guide parts 32 are discharged through different smoke guide outlets 31c.

[0094] The design of the multiple smoke guide inlets 31a on the smoke guide portion 32 sharing the same smoke guide cavity 31b and smoke guide outlet 31c simplifies the manufacturing difficulty of the smoke guide frame 30 and helps reduce manufacturing costs.

[0095] In some optional embodiments, the surface of the smoke guide portion 32 on which the smoke guide outlet 31c is provided is the first surface, and the surface of the smoke guide portion 32 on which the smoke guide inlet 31a is provided is the second surface. In the direction from the first surface to the second surface, the width of the smoke guide portion 32 in the second direction Y and / or the third direction Z gradually decreases, and the third direction Z intersects with both the first direction X and the second direction Y. Taking FIG1 as an example, the third direction Z is the vertical direction. Under this design, after the battery unit 20 is installed, the smoke guide frame 30 can be operated to first tilt the end of the smoke guide portion 32 with a smaller width and insert it between the battery unit 20 and the first beam 13, and then press the end of the smoke guide portion 32 with a larger width and squeeze it into between the battery unit 20 and the first beam 13, thereby facilitating the installation of the smoke guide frame 30.

[0096] 23 and 24 , in some optional embodiments, the inner wall of the smoke guide cavity 31b is covered with a fireproof layer 33. For example, the fireproof layer 33 can be made of fiberglass cloth, steel, pure mica cloth, etc., and can be specifically configured as needed.

[0097] When high-temperature flue gas and high-temperature conductive material enter the smoke guide cavity 31b, the fireproof layer 33 blocks the smoke guide frame 30 and the high-temperature flue gas, reducing the impact of the high-temperature flue gas on the smoke guide frame 30 and reducing the risk of the smoke guide frame 30 melting or even catching fire due to high temperature, making the battery 1000 safer to use.

[0098] In combination with Figures 7 and 8, Figures 20 and 23, in some optional embodiments, the battery 1000 also includes a mounting base 40, and the mounting base 40 is provided on the first side and the second side of the battery unit 20. On the same side of the battery unit 20, the mounting base 40 is installed on the box body 10, and the mounting base 40 corresponds one-to-one with the connecting portion 34. The mounting base 40 is arranged on one side of the corresponding connecting portion 34 along a third direction Z that intersects both the first direction X and the second direction Y, and is detachably connected to the corresponding connecting portion 34.

[0099] Specifically, the mounting seat 40 is disposed on a side of the connecting portion 34 facing the second cover plate 17 and is connected to the first beam 13 .

[0100] The mounting base 40 and the smoke guide frame 30 can be detachably connected to the connecting portion 34 by means of screws 41, pins, etc. For example, threaded holes 43 are provided on the mounting base 40 and the connecting portion 34, and screws 41 are simultaneously passed through the threaded holes 43 on the mounting base 40 and the connecting portion 34 and locked by nuts 42.

[0101] By arranging the mounting seat 40 and the connecting portion 34 in a one-to-one correspondence, the stability and reliability of the installation of the smoke guide frame 30 are ensured.

[0102] In some optional embodiments, as an example, the connecting portion 34 includes a first connecting plate and a second connecting plate bent relative to the first connecting plate, the first connecting plate is connected between the surfaces of the two adjacent smoke guide portions 32 facing the battery cell 20 in the first direction X, and the second connecting plate is connected between the surfaces of the two adjacent smoke guide portions 32 arranged in the third direction Z.

[0103] Taking the example of connecting the connecting portion 34 and the mounting base 40 through a screw 41 and a nut 42, the screw 41 is pre-installed on the mounting base 40, and the threaded hole 43 on the smoke guide frame 30 is aligned with the screw 41 on the mounting base 40, and then the smoke guide frame 30 is pressed so that the screw 41 on the mounting base 40 is inserted into the threaded hole 43 on the smoke guide frame 30, and then the nut 42 is locked on the screw 41.

[0104] By designing the connecting portion 34 in this form, the connecting portion 34 and the mounting seat 40 can be easily installed and the operation is simple.

[0105] In conjunction with Figures 2, 5, 6 and 19, in some optional embodiments, the side of the smoke guide frame 30 facing away from the mounting seat 40 is bonded to the case 10 via thermally conductive adhesive 90. Specifically, the smoke guide frame 30 is bonded to the first cover plate 16 via the thermally conductive adhesive 90, and the thermally conductive adhesive 90 bonds all the battery cells 20 and all the smoke guide frames 30 to the first cover plate 16. On the one hand, after being bonded with the thermally conductive adhesive 90, the battery cells 20 and the smoke guide frames 30 can be fixed relative to the case 10, thereby reducing the risk of the battery 1000 sliding relative to the case 10 and colliding with the case 10 during transportation or use, thereby increasing the service life of the battery 1000. On the other hand, the thermally conductive adhesive 90 can also be used to quickly transfer heat from the battery cells 20 and the smoke guide frames 30 to the first cover plate 16, and diffuse it to the outside from the first cover plate 16, significantly improving the heat dissipation effect of the battery 1000.

[0106] In the present application, the thermal conductive adhesive 90 cooperates with the mounting base 40 to fix and position the smoke guide frame 30 on both sides of the smoke guide frame 30 along the third direction Z, and has better installation reliability and stability.

[0107] Referring to Figures 2 to 6, 9 to 14, and 17 to 27, in some optional embodiments, the battery 1000 further includes insulating and heat-shielding sheets 50. Insulating and heat-shielding sheets 50 are disposed on both the first and second sides of the battery cells 20. On the same side of the battery cells 20, the insulating and heat-shielding sheets 50 are disposed between the smoke guide frame 30 and all battery cell explosion-proof valves 21a. Specifically, the number of insulating and heat-shielding sheets 50 is the same as the number of smoke guide frames 30, and they correspond one-to-one.

[0108] As an example, the insulating and heat-insulating sheet 50 can be a mica paper sheet, a glass fiber sheet, etc., and can be specifically set according to needs.

[0109] The insulating sheet 50 provides excellent insulation, making it difficult for heat from the battery cells 20 to be transferred through the insulating sheet 50 to the smoke guide frame 30 and the housing 10. This prevents overheating of the smoke guide frame 30 and the housing 10, thereby extending the service life of the battery 1000. Furthermore, the insulating sheet 50 provides excellent insulation. If a battery cell 20 fails and short-circuits, current cannot be transferred through the insulating sheet and the smoke guide frame 30 to the housing 10, ensuring the safety of the battery 1000.

[0110] Referring to Figures 10 to 14 and 17 to 19, in some optional embodiments, the cell explosion-proof valve 21a has a first boundary 21c and a second boundary 21d spaced apart along a third direction Z intersecting the first direction X, with the second boundary 21d located below the first boundary 21c. On the same side of the battery cell 20, the insulating and heat-shielding sheet 50, disposed along the third direction Z, extends beyond the first boundary 21c and the second boundary 21d of the cell explosion-proof valve 21a, respectively. The insulating and heat-shielding sheet 50 extends beyond the highest point of the first boundary 21c (indicated by point P1 in Figure 13) and the lowest point of the second boundary 21d (indicated by point P2 in Figure 13) by a length L (as shown in Figure 13), where 1.5 mm < L < 2.5 mm. The insulating and heat-shielding sheet extends beyond the first boundary 21c and the second boundary 21d of all the cell explosion-proof valves 21a in the height direction of the housing 10, thereby reducing the risk of high-temperature flue gas spreading along the third direction Z to the periphery of the battery cell 20.

[0111] In conjunction with Figures 3 to 6, 19, 26 and 27, in some optional embodiments, a plurality of weak portions 51 are formed on the insulating heat insulation sheet 50. On the same side of the battery cell 20, at least some of the weak portions 51 on the insulating heat insulation sheet 50 are aligned one by one with all the battery cell explosion-proof valves 21a and all the smoke guide channels 31 on the smoke guide frame 30.

[0112] The alignment of the two components means that the geometric centers of the two components are both on the central axis of one of the components.

[0113] At least some of the weak portions 51 on the insulating heat insulation sheet 50 are aligned one-to-one with all the smoke guiding channels 31 on the smoke guide frame 30. As an example, the number of all the weak portions 51 on the insulating heat insulation sheet 50 and all the smoke guiding channels 31 on the smoke guide frame 30 can be the same and aligned one-to-one. Alternatively, the number of all the weak portions 51 on the insulating heat insulation sheet 50 can be twice the number of all the smoke guiding channels 31 on the smoke guide frame 30, and half of the weak portions 51 on the insulating heat insulation sheet 50 are aligned one-to-one with all the smoke guiding channels 31 on the smoke guide frame 30.

[0114] As shown in FIG9 and FIG26 , the first and second cell modules each include one cell 21. In this embodiment, when the number of all weak portions 51 on the insulating and heat-shielding sheet 50 is twice the number of all smoke guide channels 31 on the smoke guide frame 30, on the first side of the battery unit 20, in the second direction Y, the weak portions 51 are alternately aligned with the cell explosion-proof valve 21a or the second cell module. On the second side of the battery unit 20, in the second direction Y, the weak portions 51 are alternately aligned with the cell explosion-proof valve 21a or the first cell module. That is, of every two adjacent weak portions 51, when one of the weak portions is aligned with the cell explosion-proof valve 21a of one of the first and second cell modules, the other weak portion is aligned with the other of the first and second cell modules. When the number of all weak parts 51 on the insulating heat insulation sheet 50 is twice the number of all smoke guide channels 31 on the smoke guide frame 30, the insulating heat insulation sheet 50 is also applicable to the embodiment in which the cell explosion-proof valves 21a of the first cell module and the second cell module in the battery unit 20 are located on the same side, and the insulating heat insulation sheet 50 has a wider range of application.

[0115] As an example, the weak portion 51 is formed by skiving, stamping, or other methods and is typically a groove structure, with the notch of the weak portion 51 facing the corresponding battery cell explosion-proof valve 21a. The thickness of the weak portion 51 is less than the thickness of the insulating and heat-shielding sheet 50 at other locations. Therefore, if the battery 1000 experiences thermal runaway, high-temperature flue gas can break through the weak portion 51 and enter the exhaust channel 12 through the weak portion 51, the smoke guide channel 31 aligned with the weak portion 51, and the smoke inlet 13a aligned with the smoke guide channel 31, and finally be discharged outside the battery 1000.

[0116] As an example, the weak portion 51 is a groove structure, and includes a first groove portion 51a and a second groove portion 51b. The first groove portion 51a surrounds and forms a closed groove structure. The second groove portion 51b is located within the area surrounded by the first groove portion 51a and is connected and communicated with the first groove portion 51a. The second groove portion 51b has a cross-shaped structure. During thermal runaway, high-temperature flue gas ejected from the battery cell explosion-proof valve 21a breaks through the first and second groove portions 51a, 51b, and is discharged through the smoke guide channel 31 and the exhaust channel 12. This type of weak portion 51 is easily broken by high-temperature flue gas, ensuring that the high-temperature flue gas can be discharged through the insulating and heat-insulating sheet 50.

[0117] In some embodiments, referring to Figures 9 to 11 and 13 , in the first direction X, the orthographic projections of the weakened portion 51 and the smoke guide inlet 31a of the smoke guide channel 31 both fall within the corresponding battery cell explosion-proof valve 21a; the cross-sectional area of ​​the weakened portion 51 perpendicular to the first direction X, and the cross-sectional area of ​​the smoke guide inlet 31a of the smoke guide channel 31, are both smaller than the cross-sectional area of ​​the corresponding battery cell explosion-proof valve 21a perpendicular to the first direction X. This reduces the possibility of high-temperature flue gas spreading to the surrounding area, ensuring that the high-temperature flue gas ejected from the battery cell explosion-proof valve 21a can only be discharged through the weakened portion, the smoke guide channel 31, and the smoke exhaust channel 12 in sequence, thereby increasing the reliability of the discharge.

[0118] Furthermore, in some embodiments, the cross-sectional area of ​​the weakened portion 51 perpendicular to the first direction X (the area of ​​the area formed by the first groove portion 51a, as shown in S3 in FIG27 ), and the cross-sectional area of ​​the smoke guide inlet 31a of the smoke guide channel 31 (the area of ​​the area formed by the outer contour of the smoke guide inlet 31a, as shown in S2 in FIG25 ) are both approximately 80% of the cross-sectional area of ​​the corresponding battery cell explosion-proof valve 21a perpendicular to the first direction X (as shown in S1 in FIG13 ). In this embodiment, the risk of high-temperature flue gas discharged from the high-cell explosion-proof valve 21a diffusing toward the surrounding area can be reduced, ensuring that the high-temperature flue gas can only be discharged through the weakened portion, the smoke guide channel 31, and the smoke exhaust channel 12 in sequence. In addition, the weakened portion 51 and the smoke guide inlet 31a of the smoke guide channel 31 can also have a larger cross-sectional area to allow the high-temperature flue gas to be quickly discharged.

[0119] Referring to Figures 2 to 6, 9 to 11, and 19 to 21, in some optional embodiments, the battery 1000 further includes a first seal 60, which is provided on both the first and second sides of the battery cell 20. The first seal 60 is defined by a plurality of first avoidance holes 61. On the same side of the battery cell 20, the first seal 60 is sealed between the insulating heat shield 50 and the smoke guide frame 30, and all first avoidance holes 61 on the first seal 60 are aligned with all weak portions 51 on the insulating heat shield 50. The battery 1000 further includes a second seal 70, which is provided on both the first and second sides of the battery cell 20. The second seal 70 is defined by a plurality of second avoidance holes 71. On the same side of the battery cell 20, the second seal 70 is sealed between the smoke guide frame 30 and the housing 10, and all second avoidance holes 71 on the first seal 60 are aligned with and communicate with all smoke outlets 31c on the smoke guide frame 30.

[0120] The number of the first seals 60 and the second seals 70 is the same as the number of the smoke guide frames 30, and the first seals 60 and the second seals 70 correspond one-to-one to the smoke guide frames 30. The first seal 60 is arranged between the corresponding insulating heat insulation sheet 50 and the corresponding smoke guide frame 30, and the second seal 70 is arranged between the corresponding smoke guide frame 30 and the first beam 13.

[0121] Specifically, the first avoidance holes 61 on the first sealing member 60 are aligned one-to-one with the weak portion 51 on the insulating heat insulation sheet 50 , and the second avoidance holes 71 on the second sealing member 70 are aligned one-to-one with the smoke guide outlets 31 c on the smoke guide frame 30 and are connected.

[0122] During actual smoke exhaust, the exhaust path of high-temperature smoke is: battery cell explosion-proof valve 21a → breaking through the weak part 51 of the insulating and heat-insulating sheet 50 → first avoidance hole 61 of the first sealing member 60 → smoke guide inlet 31a of the smoke guide frame 30 → smoke guide cavity 31b of the smoke guide frame 30 → smoke inlet 13a of the first beam 13 → first smoke exhaust cavity 13b of the first beam 13 → second smoke exhaust cavity 14b of the second beam 14 → discharge from the battery explosion-proof valve 18.

[0123] The first seal 60 is used to seal the gap between the smoke guide frame 30 and the battery cells 20, and the second seal 70 is used to seal the gap between the smoke guide frame 30 and the first beam 13. The provision of the first seal 60 and the second seal 70 provides a better seal between the smoke guide frame 30, the battery cells 20, and the housing 10, reducing the risk of high-temperature smoke spreading within the housing 10 and ensuring that the high-temperature smoke is discharged only through the smoke guide channel 31 and the smoke exhaust channel 12.

[0124] As an example, the first sealing member 60 and the second sealing member 70 are both silicone pads. After heat diffusion, the silicone pads can harden and maintain the sealing mode, thereby achieving a better sealing effect of the first sealing member 60 and the second sealing member 70. Of course, the first sealing member 60 and the second sealing member 70 can also be rubber pads or other sealing forms, such as a sealant layer.

[0125] Referring to Figures 2, 21, and 28, in some embodiments, a busbar 80 is further provided on the first and second sides of the battery cell 20. The busbar 80 is connected to the terminal 21b of the battery cell 20 on the same side of the battery cell 20. The busbar 80 is disposed on one side of the smoke guide frame 30 along the third direction Z and contacts the smoke guide frame 30. Specifically, the busbar 80 and the mounting base 40 are disposed on the same side of the smoke guide frame 30, and the busbar 80 serves as an auxiliary position limiter for the smoke guide frame 30 during assembly.

[0126] Taking the installation of battery 1000 in an electric vehicle as an example, during actual assembly, the frame 15 and second cover plate 17 are first assembled, with the second cover plate 17 positioned at the bottom of the battery 1000. All battery cells 20 and the busbars 80 welded to them are then placed into the frame 15. Next, the insulating and heat-shielding sheet 50 is bonded to the cell explosion-proof valve 21a. The bonded first seal 60, smoke guide frame 30, and second seal 70 are then squeezed into the gap between the insulating and heat-shielding sheet 50 and the first beam 13, ensuring that the smoke guide frame 30 contacts the busbar 80 and the mounting base 40. The smoke guide frame 30 is then connected to the mounting base 40. Next, the box gasket 110 and first cover plate 16 are sequentially installed onto the frame 15, and assembled to form the battery 1000. At this point, the first cover plate 16 is positioned at the top of the battery 1000. Finally, the battery 1000 is flipped 180° so that the first cover 16 faces downward and is located at the bottom of the battery 1000 and the second cover 17 faces upward and is located at the top of the battery 1000. The battery 1000 is then installed on the chassis of the electric vehicle.

[0127] The present application also provides an electrical device, which includes the battery 1000 as described in any one of the embodiments, and the battery 1000 is used to provide electrical energy to the electrical device.

[0128] The electrical device in this application has the effects described in any of the above embodiments, so it will not be described in detail here.

[0129] The electrical devices may include, but are not limited to, mobile phones, tablets, laptop computers, electric toys, electric tools, battery-powered vehicles, electric cars, ships, spacecraft, etc. Electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0130] It should be understood that the technical solutions described in the embodiments of the present application are not limited to being applicable to the electrical devices described above.

[0131] In the aforementioned battery 1000 and electrical device, the battery unit 20, on both the first and second sides thereof, disposed along the first direction X, has a battery cell explosion-proof valve 21a, a smoke guide frame 30, and a smoke inlet 13a of the smoke exhaust passage 12. On the same side of the battery unit 20, a smoke guide passage 31 corresponds one-to-one with the smoke inlet 13a of the smoke exhaust passage 12, communicating between the corresponding battery cell explosion-proof valve 21a and the corresponding smoke inlet 13a. Therefore, the high-temperature conductive material sprayed from the battery cell explosion-proof valve 21a follows the high-temperature flue gas through the smoke guide channel 31 and the smoke inlet 13a corresponding to the battery cell explosion-proof valve 21a into the smoke exhaust channel 12, and is discharged to the outside of the battery 1000 after flowing through the smoke exhaust channel 12. In this way, the high-temperature flue gas and the high-temperature conductive material can be guided in a directional manner for directional injection, thereby realizing the thermal and electrical separation of the battery 1000, thereby reducing the electrical risks of the high-temperature conductive material being sprayed into the battery 1000, causing the pole 21b to short-circuit, the sampling harness in the battery 1000 to burn, and arcing, etc., thereby achieving the purpose of isolating the high-temperature conductive material from the pole 21b of the battery cell 21, and significantly improving the safety of the battery 1000.

[0132] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0133] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A battery, characterized in that: The battery comprises a box body (10), a battery unit (20) and a smoke guide frame (30); the box body (10) has a receiving cavity and a smoke exhaust passage (12); the battery unit (20) and the smoke guide frame (30) are both located in the receiving cavity; The battery unit (20) has a first side and a second side arranged opposite to each other along a first direction (X), the battery unit (20) comprises a first battery cell module and a second battery cell module which are arranged alternately and connected in series, the first battery cell module and the second battery cell module each comprising at least one battery cell (21) or at least two battery cells (21) connected in parallel, the battery cell (21) having a battery cell explosion-proof valve (21a), all the battery cell explosion-proof valves (21a) of the first battery cell module facing the first side, and all the battery cell explosion-proof valves (21a) of the second battery cell module facing the second side; The first side and the second side of the battery unit (20) are both provided with the smoke guide frame (30), the smoke guide frame (30) having a plurality of smoke guide channels (31), and on the same side of the battery unit (20), all the smoke guide channels (31) on the smoke guide frame (30) correspond one-to-one to all the battery cell explosion-proof valves (21a); The first side and the second side of the battery unit (20) are both provided with a plurality of smoke inlets (13a) of the smoke exhaust channel (12); on the same side of the battery unit (20), the smoke guide channel (31) corresponds one to one with the smoke inlets (13a) of the smoke exhaust channel (12); the smoke guide channel (31) is connected between the corresponding battery cell explosion-proof valve (21a) and the smoke inlet (13a).

2. The battery according to claim 1, characterized in that The box body (10) comprises at least two first beam bodies (13) arranged at intervals along the first direction (X), and at least two second beam bodies (14) arranged at intervals along a second direction (Y) intersecting the first direction (X), each adjacent two first beam bodies (13) and each adjacent two second beam bodies (14) enclose a sub-cavity (11), the battery unit (20) and the smoke guide frame (30) are arranged in the sub-cavity (11), and all the sub-cavities (11) are constructed together to form the accommodating cavity; The first beam body (13) has a first smoke exhaust cavity (13b) therein, and the surface of the first beam body (13) facing the smoke guide frame (30) is provided with the smoke inlet (13a); the first and / or last second beam body (14) arranged along the second direction (Y) is provided with a second smoke exhaust cavity (14b) and a smoke outlet (14a), all the smoke inlets (13a) on the first beam body (13) are connected to the first smoke exhaust cavity (13b) and are jointly constructed to form an air intake section of the smoke exhaust channel (12), and the first smoke exhaust cavity (13b) and the smoke outlet (14a) on the second beam body (14) are connected to form an air outlet section of the smoke exhaust channel (12).

3. The battery according to claim 2, characterized in that A battery explosion-proof valve (18) is provided at the smoke outlet (14a).

4. The battery according to any one of claims 1 to 3, characterized in that: The smoke guide frame (30) comprises a smoke guide portion (32) and a connecting portion (34) alternately arranged along a second direction (Y) intersecting the first direction (X), and the smoke guide portion (32) is provided with the smoke guide channel (31); On the first side of the battery unit (20), all the smoke guide channels (31) on the smoke guide frame (30) are aligned one by one with and connected to the battery cell explosion-proof valves (21a) of all the first battery cell modules, and all the connecting parts (34) of the smoke guide frame (30) are aligned one by one with at least part of the second battery cell modules; On the second side of the battery unit (20), all of the smoke guide channels (31) on the smoke guide frame (30) are aligned one by one with and connected to all of the battery cell explosion-proof valves (21a) of all of the second battery cell modules, and all of the connecting parts (34) of the smoke guide frame (30) are aligned one by one with at least part of the first battery cell modules.

5. The battery according to claim 4, characterized in that The surface of the smoke guide portion (32) facing the battery unit (20) is provided with a plurality of smoke guide inlets (31a) arranged along the second direction (Y), the smoke guide portion (32) has a smoke guide cavity (31b) therein, and the surface of the smoke guide portion (32) facing away from the battery unit (20) is provided with a smoke guide outlet (31c), and in the same smoke guide portion (32), the smoke guide inlet (31a), the smoke guide cavity (31b) and the smoke guide outlet (31c) are sequentially connected to form the smoke guide channel (31).

6. The battery according to claim 5, characterized in that The surface of the smoke guiding portion (32) on which the smoke guiding outlet (31c) is provided is a first surface, and the surface of the smoke guiding portion (32) on which the smoke guiding inlet (31a) is provided is a second surface; in the direction from the first surface to the second surface, the width of the smoke guiding portion (32) in the second direction (Y) and / or the third direction (Z) gradually decreases, and the third direction (Z) intersects with both the first direction (X) and the second direction (Y).

7. The battery according to claim 5, characterized in that The inner wall of the smoke guiding cavity (31b) is covered with a fireproof layer (33).

8. The battery according to claim 5, characterized in that The battery further comprises a mounting seat (40), the mounting seat (40) being arranged on the first side and the second side of the battery unit (20), the mounting seat (40) being installed on the box body (10) on the same side of the battery unit (20), and the mounting seat (40) and the connecting portion (34) corresponding one to one, the mounting seat (40) being arranged on one side of the corresponding connecting portion (34) along a third direction (Z) intersecting both the first direction (X) and the second direction (Y), and being detachably connected to the corresponding connecting portion (34).

9. The battery according to claim 8, characterized in that The side of the smoke guide frame (30) facing away from the mounting seat (40) is bonded to the box body (10) via a heat-conducting adhesive (90).

10. The battery according to claim 1, characterized in that The battery further comprises an insulating heat-insulating sheet (50), the first side and the second side of the battery unit (20) are both provided with an insulating heat-insulating sheet (50), and on the same side of the battery unit (20), the insulating heat-insulating sheet (50) is provided between the smoke guide frame (30) and all the battery cell explosion-proof valves (21a).

11. The battery according to claim 10, characterized in that The battery cell explosion-proof valve (21a) has a first boundary (21c) and a second boundary (21d) arranged at intervals along a third direction (Z) intersecting the first direction (X), and the second boundary (21d) is located at the bottom side of the first boundary (21c); on the same side of the battery unit (20), two ends of the insulating heat-insulating sheet (50) arranged along the third direction (Z) respectively extend out of the first boundary (21c) and the second boundary (21d) of the battery cell explosion-proof valve (21a), and the length of the insulating heat-insulating sheet (50) extending from the highest point of the first boundary (21c) and the lowest point of the second boundary (21d) is L, and 1.5 mm < L < 2.5 mm.

12. The battery according to claim 10, characterized in that A plurality of weak portions (51) are formed on the insulating heat-insulating sheet (50); on the same side of the battery unit (20), at least some of the weak portions (51) on the insulating heat-insulating sheet (50) are aligned one by one with all of the battery cell explosion-proof valves (21a) and all of the smoke guide channels (31) on the smoke guide frame (30).

13. The battery according to claim 12, characterized in that The weak portion (51) is a groove structure, and the weak portion (51) includes a first groove portion (51a) and a second groove portion (51b), wherein the first groove portion (51a) surrounds and forms a closed groove structure, and the second groove portion (51b) is located in an area surrounded and formed by the first groove portion (51a), and is connected and communicated with the first groove portion (51a), and the second groove portion (51b) is a cross-shaped structure.

14. The battery according to claim 12, characterized in that In the first direction (X), the orthographic projections of the weak portion (51) and the smoke guide inlet (31a) of the smoke guide channel (31) both fall into the corresponding battery core explosion-proof valve (21a); The cross-sectional area of ​​the weak portion (51) perpendicular to the first direction (X) and the cross-sectional area of ​​the smoke guide inlet (31a) of the smoke guide channel (31) are both smaller than the cross-sectional area of ​​the corresponding battery core explosion-proof valve (21a) perpendicular to the first direction (X).

15. The battery according to claim 14, characterized in that The cross-sectional area of ​​the weak portion (51) perpendicular to the first direction (X) and the cross-sectional area of ​​the smoke guide inlet (31a) of the smoke guide channel (31) are both approximately 80% of the cross-sectional area of ​​the corresponding battery core explosion-proof valve (21a) perpendicular to the first direction (X).

16. The battery according to claim 12, characterized in that The battery further comprises a first sealing member (60), and the first side and the second side of the battery unit (20) are both provided with the first sealing member (60), and a plurality of first avoidance holes (61) are provided on the first sealing member (60); on the same side of the battery unit (20), the first sealing member (60) is sealedly connected between the insulating heat-insulating plate (50) and the smoke guide frame (30), and all the first avoidance holes (61) on the first sealing member (60) are aligned one by one with all the weak portions (51) on the insulating heat-insulating plate (50).

17. The battery according to claim 16, characterized in that The first sealing member (60) is a silicone pad.

18. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 17, wherein the battery is used to provide electrical energy to the electrical device.

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