Battery and electric device

Abstract

The invention provides a battery and a power utilization device, the battery comprises a battery cell and a supporting piece, the supporting piece is provided with a configuration bin and an exhaust bin, the battery cell is arranged in the configuration bin, the battery cell comprises a shell, an electrode and a valve piece, the valve piece is arranged on one side, facing the exhaust bin, of the shell and is communicated with the exhaust bin in a conducting state, and the electrode is arranged on one side, back to the valve piece, of the shell. The valve piece is arranged on one side opposite to the electrode, that is, electric connection of the electrode and exhaust of the valve piece are separated by the battery cell, the insulation arrangement on the side where the electrode is located is free from being influenced by gas exhausted by the valve piece, and the risk of detonating the battery cell is reduced or eliminated.

Description

Technical Field

[0001] The present application belongs to the field of new energy technology, and more specifically, to a battery and an electrical device. Background Art

[0002] Generally, the battery cell is equipped with an explosion-proof valve, which is located on the side where the electrode of the battery cell is located. The electrode of the battery cell is electrically connected to other electrical components, and the electrical connection between the electrode and the electrical component and other conductive structures or materials need to be insulated by insulating materials. Since the explosion-proof valve is located on the side where the electrode is located, when the pressure relief mechanism is broken by the high-temperature gas, the high-temperature gas is discharged from the side where the electrode is located, which is easy to damage the insulating material and cause the insulating material to fail, which will greatly increase the risk of short-circuit failure of the battery cell, which is not conducive to improving the safety performance of the battery. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a battery and an electrical device to solve the technical problem that the exhaust of the existing battery is located on the side where the electrode is located, which may easily cause the risk of battery cell explosion.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] A battery is provided, the battery comprising a battery cell and a supporting member, the supporting member being provided with a configuration chamber and an exhaust chamber;

[0006] The battery cell is arranged in the configuration chamber, and the battery cell includes a shell, an electrode and a valve member. The valve member is arranged on a side of the shell facing the exhaust chamber and is connected with the exhaust chamber in a conducting state. The electrode is arranged on a side of the shell facing away from the valve member.

[0007] In the battery provided by the present technical solution, the valve member for discharging the gas inside the battery is arranged on the side facing away from the electrode, that is, the electrical connection of the electrode and the exhaust of the valve member are separated by the battery cell itself, and the insulation arrangement on the side where the electrode is located is free from being affected by the gas discharged by the valve member, so the risk of the battery cell exploding is reduced or eliminated.

[0008] In some embodiments, the supporting member includes a frame that encloses the configuration bin, and at least a portion of the frame is provided with a cavity, and the cavity is communicated with the exhaust bin.

[0009] The addition of cavities can expand the diffusion space of the gas and extend the flow path of the gas. On the one hand, it can reduce the gas pressure by expanding the capacity. On the other hand, it can filter out the explosive impurities and cool them down by extending the path, thereby reducing the risk of detonation due to high pressure and high temperature.

[0010] In some embodiments, the configuration bin includes a first bin and a second bin spaced apart; the frame includes a first frame enclosing the first bin and a second frame enclosing the second bin; the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame;

[0011] Wherein, the first cavity and the second cavity are respectively communicated with the exhaust chamber.

[0012] The addition of the first cavity and the second cavity can respectively expand the diffusion space of the gas and extend the flow path of the gas. On the one hand, the gas pressure can be reduced by expanding the volume, and on the other hand, the explosive impurities therein can be filtered and cooled by extending the path, thereby reducing the risk of detonation due to high pressure and high temperature.

[0013] In some embodiments, the configuration bin includes a first bin and a second bin spaced apart; the frame includes a first frame enclosing the first bin and a second frame enclosing the second bin; the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame;

[0014] Wherein, the first cavity is connected to the exhaust chamber and the second cavity.

[0015] The addition of the first cavity and the second cavity can further expand the diffusion space of the gas and further extend the flow path of the gas in turn. On the one hand, the gas pressure can be further reduced by expanding the capacity. On the other hand, the explosive impurities can be further filtered and cooled by extending the path, thereby further reducing the risk of explosion due to high pressure and high temperature.

[0016] In some embodiments, part of the second frame and part of the first frame are overlapped and form a common part of the first bin and the second bin, and the first bin and the second bin are respectively arranged on both sides of the common part.

[0017] Part of the first frame or part of the second frame serves as the common part of the first bin and the second bin, so that the first bin and the second bin are arranged adjacent to each other. The closer the first bin and the second bin are, the more conducive it is to realize the connection setting of the first cavity and the second cavity.

[0018] In some embodiments, the second bin and the second cavity are connected to each other.

[0019] The gas discharged from the valve member flows through the exhaust chamber, the first cavity and the second cavity, the temperature and pressure of the gas are effectively reduced, and the explosive impurities therein are effectively filtered out. The second chamber can be used as a space for auxiliary expansion.

[0020] In some embodiments, the second frame is provided with a configuration hole, and the second bin and the second cavity are respectively provided on both sides of the configuration hole;

[0021] The supporting member includes an air inlet mechanism, and the air inlet mechanism is arranged in the arrangement hole;

[0022] The air introduction mechanism is provided with an air gap hole, and the air gap hole communicates with the second bin and the second cavity; or the air introduction mechanism is in clearance fit with the hole wall of the configuration hole.

[0023] The second chamber and the second cavity are kept in communication through the air gap hole or clearance fit, allowing a small amount of gas to enter the second chamber. The second chamber can serve as an auxiliary expansion space to accommodate a small amount of gas.

[0024] In some embodiments, the second frame is provided with a configuration hole, and the second bin and the second cavity are respectively provided on both sides of the configuration hole;

[0025] The support member includes a hot melt mechanism disposed in the configuration hole, wherein the hot melt mechanism is configured to isolate the second bin and the second cavity in a complete state and to connect the second bin and the second cavity in a state of being at least partially hot-melted.

[0026] After at least part of the hot-melt mechanism is hot-melted by the gas discharged from the valve member, the second chamber and the second cavity are connected, and the second chamber can be used as a space for auxiliary expansion.

[0027] In some embodiments, the battery includes an air pressure detection element, and the air pressure detection element is disposed in the first cavity.

[0028] The pressure or temperature of the gas after reaching the first cavity is detected by the air pressure detection element. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0029] In some embodiments, the battery includes an air pressure detection element, the second compartment and the second cavity are isolated from each other, and the air pressure detection element is disposed in the second cavity.

[0030] The air pressure detection element detects the pressure or temperature of the gas reaching the second cavity. If the obtained value exceeds a set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0031] In some embodiments, the battery includes an air pressure detection element, the air pressure detection element includes a sensing portion and a detection portion connected to the sensing portion, the sensing portion is disposed in the second compartment, and the detection portion is disposed in the second cavity.

[0032] The air pressure detection element detects the pressure or temperature of the gas reaching the second cavity. If the obtained value exceeds a set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0033] In some embodiments, the battery includes an air pressure detection element, and the air pressure detection element is disposed in the second compartment.

[0034] The gas pressure detection element detects the pressure or temperature of the gas reaching the second chamber. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0035] In some embodiments, the first cavity is provided with a plurality of guide structures, and the plurality of guide structures are arranged sequentially along the extension direction of the first cavity, and the plurality of guide structures are configured to allow the gas discharged from the valve member to flow through the plurality of guide structures sequentially along the extension direction of the cavity.

[0036] The multiple flow-guiding structures can filter the explosive impurities in the gas one by one, and gradually reduce the temperature of the gas, thereby improving the pressure-reducing and temperature-reducing effect of the first cavity on the gas.

[0037] In some embodiments, a portion of the cavity wall of the cavity protrudes toward the center of the cavity relative to another portion of the cavity wall to form the guide structure.

[0038] A flow guide structure is formed by utilizing part of the cavity wall of the cavity, thereby simplifying the structure of the frame where the cavity is located, simplifying the structure of the supporting part, and reducing the manufacturing cost.

[0039] In some embodiments, different guide structures are arranged at different circumferential positions of the cavity, wherein an extension direction of the cavity is perpendicular to the circumference.

[0040] Multiple guide structures are arranged in sequence along the extension direction of the cavity. Different guide structures are arranged at different circumferential positions. Different guide structures can filter and cool the gas from different circumferential positions, that is, they act on the gas from the entire circumference, further improving the pressure reduction and temperature reduction effect on the gas.

[0041] In some embodiments, the battery includes an air pressure detection element, a flow guiding space is formed between two adjacent flow guiding structures, and the air pressure detection element is disposed in the flow guiding space.

[0042] After the gas flows through the first guide structure counted from the side where the exhaust bin is located, it enters at least the first guide space. After the gas is depressurized and cooled by at least one guide structure, the gas is tested to achieve the purpose of setting the guide structure.

[0043] In some embodiments, the mold cavity includes a plurality of sub-cavities, and the plurality of sub-cavities are arranged in sequence along a direction perpendicular to the extension direction of the mold cavity, and any two adjacent sub-cavities are connected.

[0044] The multiple sub-cavities can filter the explosive impurities in the gas one by one, and gradually reduce the temperature of the gas, thereby improving the pressure reduction and temperature reduction effect of the first cavity on the gas.

[0045] Another object of an embodiment of the present application is to provide an electrical device, wherein the electrical device comprises the battery as described above.

[0046] The electrical device provided by the present technical solution adopts the battery provided by the above technical solution. In the battery provided by the above technical solution, the electrical connection side of the battery cell and the exhaust side of the battery cell are isolated by the battery cell itself, and the insulation setting of the electrical connection side is free from being affected by the gas discharged by the valve member, so the risk of the battery cell detonating is reduced or eliminated, and the safety risk of the electrical device is reduced or eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0048] Figure 1 A schematic diagram of an electrical device provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of disassembling a battery provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of a battery provided in an embodiment of the present application;

[0051] Figure 4 for Figure 3 Sectional view in the AA direction;

[0052] Figure 5 for Figure 4 A magnified view of part A;

[0053] Figure 6 A schematic diagram of a battery provided in an embodiment of the present application;

[0054] Figure 7 A schematic diagram of a support provided in an embodiment of the present application;

[0055] Figure 8 for Figure 7 Cross-sectional view in the BB direction;

[0056] Fig. 9 for Figure 8 A magnified view of part B;

[0057] Fig.10A schematic diagram of a section where an air inlet mechanism is located on a second frame provided in an embodiment of the present application;

[0058] Fig.11 for Fig.10 Magnified view of part C.

[0059] Among them, the reference numerals in the figure are:

[0060] 10. Battery; 100. Power-consuming device; 101. Controller; 102. Motor;

[0061] 11. Battery cell; 12. Supporting part; 13. Air pressure detection element; 14. Air induction mechanism; 15. Upper box body;

[0062] 111, electrode; 112, valve member; 1111, positive electrode; 1112, negative electrode;

[0063] 120, configuration chamber; 121, first chamber; 122, exhaust chamber; 123, second chamber; 124, frame; 125, cavity; 126, bottom support plate; 127, bottom guard plate; 128, spacing space; 129, insulation material;

[0064] 1241, first frame; 1242, second frame; 1242a, configuration hole;

[0065] 1251, first cavity; 1252, second cavity; 1253, flow guide structure; 1254, sub-cavity; 1261, exhaust hole. DETAILED DESCRIPTION

[0066] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0068] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position 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 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.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] Thermal runaway of a battery cell refers to the phenomenon of thermal runaway of the battery cell due to one or more factors. Thermal runaway causes the battery cell temperature to rise sharply, and simultaneously releases a large amount of heat and harmful gases, leading to the risk of detonating the battery.

[0071] Exemplarily, a process in which thermal runaway of a battery cell leads to spontaneous combustion or explosion of the battery is listed, which starts with the decomposition of the negative electrode SEI (Solid electrolyte interface) inside the battery cell, the diaphragm separating the negative electrode and the electrolyte decomposes and melts, the negative electrode reacts with the electrolyte, the positive electrode and the electrolyte decompose, causing a large-area short circuit inside the battery cell, causing the electrolyte to burn, and the battery cell to thermally run away, causing the battery to spontaneously combust and explode.

[0072] During the normal charging and discharging process of the battery cell, the electrolyte is filled between the positive and negative electrodes of the battery cell. The directional movement of ions in the electrolyte and the directional movement of electrons in the external wires form a closed loop, so that the chemical reactions of the positive and negative electrodes continue. The orderly electron transfer process generates current and realizes the conversion of chemical energy into electrical energy. Therefore, the positive and negative electrodes need to be electrically connected to other electrical components.

[0073] On this basis, the positive and negative electrodes of the battery cell are generally provided with one or more conductive structures or materials. In order to prevent the positive and negative electrodes of the battery cell from conducting electricity with these structures or materials and causing safety hazards, insulating structures or insulating materials are required for insulation isolation. Effective insulation performance must be ensured during the use of the battery.

[0074] Generally, explosion-proof valves are installed on the positive and negative electrode sides of the battery cell. When the battery cell thermally runs away, the temperature inside the battery cell rises sharply, and high-temperature and high-pressure gas is generated at high speed. Under the impact of high-temperature and high-pressure gas, the explosion-proof valve is turned on and gas is ejected toward the electrode side of the battery cell. High-temperature and high-pressure gas can easily destroy the above-mentioned insulation structure or insulation material. Insulation failure will greatly increase the risk of battery cell explosion.

[0075] Based on the above considerations, in order to reduce or eliminate the adverse effects of the gas ejected by the thermal runaway of the battery cell on the insulation setting on the side where the electrode of the battery cell is located, a battery is provided, the battery includes a battery cell and a support, and the support is provided with a configuration chamber and an exhaust chamber. The battery cell is arranged in the configuration chamber, and the battery cell includes a shell, an electrode and a valve member, the valve member is arranged on the side of the shell facing the exhaust chamber, and is connected to the exhaust chamber in the conduction state, and the electrode is arranged on the side of the shell facing away from the valve member.

[0076] In the battery provided by the present technical solution, the valve member for discharging the gas inside the battery is arranged on the side facing away from the electrode, that is, the electrical connection of the electrode and the exhaust of the valve member are separated by the battery cell itself, and the insulation arrangement on the side where the electrode is located is free from being affected by the gas discharged by the valve member, so the risk of the battery cell exploding is reduced or eliminated.

[0077] In some embodiments, the battery 10 refers to a physical module including one or more battery cells for providing voltage and capacitance. For example, it may include a battery cell, a battery module, a battery pack, etc., and a battery cell may include a battery cell. Generally, a battery includes a battery cell and a box for accommodating the battery cell, the box is used to accommodate and encapsulate one or more battery cells or battery modules, and the box is used to protect the battery cell and prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell.

[0078] The battery cell may include a lithium-ion secondary battery, a lithium-ion primary battery, a lithium-sulfur battery, a sodium-lithium-ion battery, a sodium-ion battery or a magnesium-ion battery, etc., which is not limited in the embodiments of the present application. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., which is not limited in the embodiments of the present application. The battery cell is divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, which is not limited in the embodiments of the present application.

[0079] Reference Figure 2 As shown, a battery cell refers to the smallest unit that constitutes the battery 10. In the battery 10, there can be multiple battery cells, and the multiple battery cells can be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells are both connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells is placed in a box. Of course, the battery 10 can also be a battery module formed by first connecting multiple battery cells in series, in parallel, or in a mixed connection, and then multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and then placed in a box.

[0080] The box body provides a storage space for the battery cells, and the box body can adopt a variety of structures. In some embodiments, a box body is exemplarily provided, and the box body includes an upper box body 15 and a support 12, and the upper box body 15 and the support 12 cover each other, and the upper box body 15 and the support 12 jointly define a storage space for accommodating the battery cells. Among them, the support 12 can be a shell structure with an opening on one side, and the upper box body 15 can be a plate-like structure. The upper box body 15 covers the open side of the support 12, and the upper box body 15 and the support 12 jointly define a storage space. The upper box body 15 and the support 12 can also be shell structures with an opening on one side, and the open side of the upper box body 15 covers the open side of the support 12. Of course, the box body formed by the upper box body 15 and the support 12 can be in a variety of shapes, such as a cylinder, a cuboid, etc.

[0081] The electric device 100 provided in the embodiment of the present application may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0082] Reference Figure 1 As shown, the power-consuming device 100 can be a vehicle, and the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 10 is arranged inside the vehicle, and the battery 10 can be arranged at the bottom, head or tail of the vehicle. The battery 10 can be used to power the vehicle, for example, the battery 10 can be used as an operating power source for the vehicle. The vehicle may also include a controller 101 and a motor 102, and the controller 101 is used to control the battery 10 to power the motor 102, for example, for the starting, navigation and working power requirements of the vehicle during driving. In some embodiments, the battery 10 can not only be used as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0083] The battery 10 and the power-consuming device 100 provided in the embodiment of the present application are now described.

[0084] See also Figures 3 to 11 The battery 10 provided in the embodiment of the present application includes a battery cell 11 and a support 12, wherein the support 12 is provided with a configuration chamber 120 and an exhaust chamber 122. The battery cell 11 is provided with a housing, an electrode 111 and a valve member 112, wherein the valve member 112 is provided on a side of the housing facing the exhaust chamber 122 and is connected to the exhaust chamber 122 in a conducting state, and the electrode 111 is provided on a side of the housing facing away from the valve member 112.

[0085] The battery cell 11 refers to a single electrical core body containing a single positive electrode 1111 and a single negative electrode 1112. The battery cell 11 is an energy storage unit and is the smallest unit of the battery 10. Taking the lithium-ion battery cell 11 as an example, the operating voltage of a single lithium-ion battery cell 11 is between 3V and 5V. In order to meet the high voltage and large capacity requirements of the electrical device 100, a plurality of battery cells 11 are generally connected in series and parallel to form a battery 10, and the battery 10 provides electrical energy to the electrical device 100. The battery cell 11 can be square or cylindrical.

[0086] The electrodes 111 refer to the positive electrode 1111 and the negative electrode 1112 of the battery cell 11. Generally, the positive electrode 1111 and the negative electrode 1112 are disposed on the same side of the battery cell 11. For example, the battery cell 11 has a plurality of side surfaces, and the positive electrode 1111 and the negative electrode 1112 are disposed on the same side surface.

[0087] In some embodiments, the positive electrode 1111 and the negative electrode 1112 are arranged on different sides of the battery cell 11 that are approximately on the same side, and the side where the positive electrode 1111 is located and the side where the valve member 112 is located are arranged away from each other, and the side where the negative electrode 1112 is located and the side where the valve member 112 is located are also arranged away from each other. For example, the battery cell 11 has multiple sides, and the positive electrode 1111, the negative electrode 1112, and the valve member 112 are respectively arranged on different sides, and the side where the positive electrode 1111 is located and the side where the negative electrode 1112 is located are at an angle, and the side where the valve member 112 is located is away from and approximately faces away from the side where the positive electrode 1111 is located, and the side where the valve member 112 is located is also away from and approximately faces away from the side where the negative electrode 1112 is located.

[0088] The support 12 refers to a component that can at least lift or place the battery cell 11, and also refers to a component that can arrange multiple battery cells 11 in an orderly manner, and plays the role of support, protection, heat dissipation, fire prevention and explosion prevention, etc. For example, the support 12 can be part of the box of the battery 10. The support 12 can also be a plate structure, and one or more battery cells 11 are positioned on the plate.

[0089] The configuration compartment 120 refers to a compartment provided by the support 12 that can at least be used to place the battery cell 11, has a certain volume, and can place one or more battery cells 11. Generally, the configuration compartment 120 has a certain height, which is roughly higher than the height of the battery cell 11, and multiple battery cells 11 are mostly arranged in an array in at least part of the configuration compartment 120.

[0090] The exhaust bin 122 refers to a bin provided by the supporting member 12 that is different from the configuration bin 120 and is used for exhaust. It has a certain volume. The gas exhausted from the valve member 112 can be collected in the exhaust bin 122, or discharged to other spaces through the exhaust bin 122, or discharged from the battery 10 through the exhaust bin 122. The exhaust bin 122 provides at least a partial path for the gas to be discharged from the battery cell 11.

[0091] Generally, the side where the electrode 111 is located faces upward, the side where the valve member 112 is located faces downward, the exhaust chamber 122 is arranged below the configuration chamber 120, the battery cell 11 is fixed to the configuration chamber 120 through the side where the valve member 112 is located, and the configuration chamber 120 and the exhaust chamber 122 are isolated by the side where the valve member 112 is located.

[0092] like Figure 6 As shown, in some embodiments, the support member 12 includes a bottom support plate 126 and a bottom guard plate 127 that are spaced apart, and a spacing space 128 is formed between the two. The battery cell 11 is disposed on the side of the bottom support plate 126 that is away from the bottom guard plate 127. The bottom support plate 126 is provided with an exhaust hole 1261, and the side where the valve member 112 of the battery cell 11 is located is connected to the bottom support plate 126, and the side where the valve member 112 is located covers the exhaust hole 1261, and the valve member 112 is exposed in the exhaust hole 1261. The gas discharged from the valve member 112 enters the spacing space 128 through the exhaust hole 1261, and the exhaust hole 1261 and the spacing space 128 together form the exhaust chamber 122.

[0093] In some embodiments, the battery includes multiple battery cells 11, the bottom support plate 126 is provided with multiple exhaust holes 1261, one battery cell 11 covers one exhaust hole 1261, multiple valve components 112 are respectively exposed in the multiple exhaust holes 1261, and the gases exhausted by the multiple valve components 112 all enter the exhaust chamber 122.

[0094] In some embodiments, except for the area occupied by the valve member 112, the other areas on the side where the valve member 112 is located are overlapped with the bottom support plate 126 through the insulating material 129. Generally, the insulating material 129 does not have the performance of conducting current, and its function is to block the current from being conducted between the metal bottom support plate 126 and the metal core shell of the battery cell 11.

[0095] In some embodiments, the insulating material 129 may be a fluid glue, which is used to bond the bottom support plate 126 and the side where the valve member 112 is located. After the fluid glue solidifies, the insulating material 129 is formed to achieve the purpose of fixing the battery cell 11 and insulating it.

[0096] In the battery 10 provided in this embodiment, the valve member 112 for discharging the gas inside the battery 10 is arranged on the side facing away from the electrode 111, that is, the electrical connection of the electrode 111 and the exhaust of the valve member 112 are separated by the battery cell 11 itself, and the insulation arrangement on the side where the electrode 111 is located is free from being affected by the gas discharged by the valve member 112, so the risk of explosion of the battery cell 11 is reduced or eliminated.

[0097] In some embodiments, the support member 12 includes a frame 1124 that encloses the configuration chamber 120 , and at least a portion of the frame 124 is provided with a cavity 125 , which is communicated with the exhaust chamber 122 .

[0098] The frame 124 is a frame structure with a certain length disposed on the side of the support 12, used to separate and define the range of the support 12. The battery cell 11 and the exhaust chamber 122 are disposed on the inner side of the frame 124, that is, in the range defined by the frame 124.

[0099] In some embodiments, the support 12 may include a plurality of frames 124, and the plurality of frames 124 are spliced ​​end to end to define the range of the support 12. Alternatively, a portion of the plurality of frames 124 surrounds and defines the spatial range of the support 12, and another portion of the plurality of frames 124 can separate the spatial range of the support 12 and divide it into a plurality of compartments, and the battery cell 11 is disposed in at least one compartment.

[0100] In some embodiments, the bracket 12 may be a part of the battery case, and the frame 124 may be a part of the frame of the battery case.

[0101] The cavity 125 is a cavity formed by removing part of the material inside the frame 124 , and has a certain extension size or volume, which can extend the flow path of the gas or expand the diffusion volume of the gas. In some embodiments, the cavity 125 extends along the length direction of the frame 124 to have the longest dimension.

[0102] The addition of cavity 125 can expand the diffusion space of the gas and extend the flow path of the gas. On the one hand, it can reduce the gas pressure by expanding the capacity. On the other hand, it can filter out the explosive impurities and cool them down by extending the path, thereby reducing the risk of detonation due to high pressure and high temperature.

[0103] In some embodiments, the configuration chamber 120 includes a first chamber 121 , and the battery cell 11 is disposed in the first chamber 121 . The frame 124 includes a first frame 1241 enclosing the first chamber 121 , and the cavity 125 includes a first cavity 1251 disposed in the first frame 1241 , and the first cavity 1251 is connected to the exhaust chamber 122 .

[0104] The first frame 1241 refers to a frame structure disposed on the periphery of the battery cell 11 and having a certain length, and is used to separate and define the range for placing the battery cell 11 from the supporting member 12, and can accommodate one battery cell 11 or multiple battery cells 11.

[0105] In some embodiments, there may be multiple first frames 1241 , and the multiple first frames 1241 are spliced ​​end to end, and the two first cavities 1251 of two adjacent first frames 1241 may be connected or isolated.

[0106] For example, any two adjacent first cavities 1251 are connected, and the exhaust chamber 122 can be connected to any one of the first cavities 1251, or can be connected to multiple first cavities 1251. For example, any two adjacent first cavities 1251 are isolated, and the exhaust chamber 122 can be connected to multiple first cavities 1251.

[0107] The first compartment 121 refers to a compartment surrounded by the first frame 1241 , and can accommodate a single or multiple battery cells 11 .

[0108] In some embodiments, the first bin 121 may be in a square, triangle, trapezoid, circle, ellipse, etc. For example, the first frame 1241 is in a straight line shape, and the number is 4, and the 4 straight-line first frames 1241 are spliced ​​end to end to form a square or trapezoidal first bin 121. Alternatively, the first frame 1241 is in a straight line shape, and the number is 3, and the 3 straight-line first frames 1241 are spliced ​​to form a triangular first bin 121.

[0109] The first cavity 1251 refers to a cavity formed by removing part of the material inside the first frame 1241, and has a certain extension size or volume, which can extend the flow path of the gas in the first frame 1241 or expand the diffusion volume of the gas in the first frame 1241. In some embodiments, the first cavity 1251 has a longest dimension extending along the length direction of the first frame 1241.

[0110] Based on the setting of the exhaust bin 122, the addition of the first cavity 1251 can expand the diffusion space of the gas and extend the flow path of the gas. On the one hand, the gas pressure can be reduced by expanding the capacity, and on the other hand, the explosive impurities therein can be filtered and cooled by extending the path, thereby reducing the risk of detonation due to high pressure and high temperature.

[0111] In some embodiments, the configuration chamber 120 includes a first chamber 121 and a second chamber 122 that are spaced apart. The frame 124 includes a first frame 1241 that encloses the first chamber 121 and a second frame 1242 that encloses the second chamber 122. The cavity 125 includes a first cavity 1251 that is provided in the first frame 1241 and a second cavity 1252 that is provided in the second frame 1242. The first cavity 1251 and the second cavity 1252 are respectively connected to the exhaust chamber 122.

[0112] In other embodiments, the configuration chamber 120 includes a first chamber 121 and a second chamber 122 that are spaced apart. The frame 124 includes a first frame 1241 that encloses the first chamber 121 and a second frame 1242 that encloses the second chamber 122. The cavity 125 includes a first cavity 1251 that is disposed in the first frame 1241 and a second cavity 1252 that is disposed in the second frame 1242. The first cavity 1251 is connected to the second cavity 1252 and the exhaust chamber 122.

[0113] The second frame 1242 refers to a frame structure with a certain length disposed outside the first frame 1241, and is used to separate and define other compartments independent of the first compartment 121 from the support 12. In some embodiments, the other compartments may be control compartments of the battery 10, and the control compartments are used to accommodate the control part of the battery 10.

[0114] In some embodiments, the number of second frames 1242 can be multiple, and the multiple second frames 1242 are spliced ​​end to end to form a circularly closed frame structure. The two second cavities 1252 of two adjacent second frames 1242 are connected and arranged, and any position of the first frame 1241 and any position of the second frame 1242 can be connected through a connecting frame 124 with a connecting cavity 125 to allow gas to pass from the first cavity 1251 into the second cavity 1252.

[0115] In other embodiments, a plurality of second frames 1242 are sequentially spliced ​​to form a circumferentially disconnected frame structure, and the two first frames 1241 farthest from each other can be spliced ​​to the first frame 1241, respectively, so that the gas flows from the first cavity 1251 into the second cavity 1252. The two second cavities 1252 of two adjacent second frames 1242 can be connected or isolated.

[0116] The second compartment 123 refers to a compartment formed by the second frame 1242 . The second frame 1242 may be formed by surrounding the second compartment 123 from all sides, or by surrounding part of the sides and with the help of the first frame 1241 .

[0117] In some embodiments, the second compartment 123 may be U-shaped. For example, the second frame 1242 is linear, and the number is 3. The three linear second frames 1242 are sequentially spliced ​​to form a U-shaped second compartment 123, and the two farthest first frames 1241 can be spliced ​​to the first frame 1241 respectively.

[0118] The second cavity 1252 refers to a cavity formed by removing part of the material inside the second frame 1242, and has a certain extension size or volume, which can extend the flow path of the gas in the second frame 1242 or expand the diffusion volume of the gas in the second frame 1242. In some embodiments, the second cavity 1252 has a longest dimension extending along the length direction of the second frame 1242.

[0119] Based on the setting of the exhaust chamber 122, by adding the first cavity 1251 and the second cavity 1252, the diffusion space of the gas can be further expanded and the flow path of the gas can be extended. On the one hand, the gas pressure can be reduced by expanding the capacity, and on the other hand, the explosive impurities therein can be filtered and cooled by extending the path, thereby reducing the risk of detonation due to high pressure and high temperature.

[0120] In some embodiments, part of the first frame 1241 and part of the second frame 1242 overlap to form a common portion of the first bin 121 and the second bin 123 , and the first bin 121 and the second bin 123 are respectively arranged on both sides of the common portion.

[0121] Compared with the first frame 1241 and the second frame 1242 being connected by the connecting frame 124, part of the first frame 1241 or part of the second frame 1242 serves as the common part of the first warehouse 121 and the second warehouse 123, so that the first warehouse 121 and the second warehouse 123 are arranged adjacent to each other, which is more conducive to the connection setting of the first cavity 1251 and the second cavity 1252.

[0122] In some embodiments, the second chamber 123 and the second cavity 1252 are connected to each other.

[0123] The gas discharged from the valve member 112 flows through the exhaust chamber 122, the first cavity 1251, and the second cavity 1252. The temperature and pressure of the gas are effectively reduced, and the explosive impurities therein are effectively filtered. The second chamber 123 can be used as an auxiliary expansion space.

[0124] Reference Fig.10 and Fig.11 As shown, in some embodiments, the second frame 1242 is provided with a configuration hole 1242a, and the second bin 123 and the second cavity 1252 are respectively provided on both sides of the configuration hole 1242a. The support member 12 includes an air bleed mechanism 14, and the air bleed mechanism 14 is arranged in the configuration hole 1242a. The air bleed mechanism 14 is provided with an air gap hole, and the air gap hole communicates with the second bin 123 and the second cavity 1252; or, the air bleed mechanism 14 and the configuration hole 1242a are in clearance fit.

[0125] The configuration hole 1242 a refers to a hole structure that allows the second bin 123 and the second cavity 1252 to communicate with each other, and can be set on a common side wall of the second bin 123 and the second cavity 1252 .

[0126] The air bleed mechanism 14 refers to a mechanism configured in the configuration hole 1242a, which can allow gas to enter the second chamber 123 by cooperating with the configuration hole 1242a, or allow gas to enter the second chamber 123 through an air gap hole provided therein. For example, the air bleed mechanism 14 can be a snap-fit ​​mechanism that can be snap-fitted into the configuration hole 1242a by snap-fitting.

[0127] The air gap hole refers to a hole structure with a small radial size that can allow a small amount of gas to pass through. The air bleed mechanism 14 can be provided with one or more air gap holes. Moreover, the air gap hole can be a regular hole structure or an irregular hole structure.

[0128] The clearance fit refers to the fit of two structures with a clearance and can fix the relative positions of the two components. The clearance fit allows a small amount of gas to enter the second chamber 123 from the second cavity 1252 .

[0129] The second chamber 123 and the second cavity 1252 are connected through the air gap hole or clearance fit, allowing a small amount of gas to enter the second chamber 123. The second chamber 123 can be used as an auxiliary expansion space to accommodate a small amount of gas.

[0130] In some other embodiments, the second frame 1242 is provided with a configuration hole 1242a, and the second bin 123 and the second cavity 1252 are respectively provided on both sides of the configuration hole 1242a. The support member 12 includes a hot melt mechanism disposed in the configuration hole 1242a, and the hot melt mechanism is configured to isolate the second bin 123 and the second cavity 1252 in a complete state and connect the second bin 123 and the second cavity 1252 in a state of being at least partially hot melted.

[0131] A hot melt mechanism refers to a mechanism whose shape is changed or melted under the action of a high-temperature substance. The hot melt mechanism can be made of a plastic material with a low melting point, including but not limited to plastic, rubber, resin, etc.

[0132] When the battery 10 experiences thermal runaway, the high-temperature and high-pressure gas reaches the second cavity 1252, and the gas contacts the hot melt mechanism. Since the melting point of the hot melt mechanism is lower than the temperature of the gas, the hot melt mechanism is melted by the gas, and at least part of the configuration hole 1242a blocked by the hot melt mechanism is opened, and the second cavity 1252 and the second chamber 123 are connected. The hot melt mechanism can be completely or partially melted, as long as the gas can reach the second chamber 123 after contacting the hot melt mechanism.

[0133] After the hot melt mechanism is hot melted by the gas discharged from the valve member 112, the second chamber 123 and the second cavity 1252 are connected, and the second chamber 123 can be used as a space for auxiliary expansion.

[0134] In some other embodiments, the second cavity 1252 and the second chamber 123 can be connected through a plurality of fine holes, which can allow a small amount of gas to enter the second chamber 123 at a slower speed and prevent a large amount of gas from entering the second chamber 123 at a faster speed and adversely affecting the functions of the components in the second chamber 123.

[0135] In other embodiments, when the exhaust chamber 122, the first cavity 1251, and the second cavity 1252 are sufficient to diffuse the gas, the second chamber 123 may not be used as an auxiliary expansion space, and the second chamber 123 and the second cavity 1252 are isolated from each other.

[0136] In some embodiments, without adding the first cavity 1251 and the second cavity 1252 , the battery includes an air pressure detection element 13 , and the air pressure detection element 13 is disposed in the exhaust chamber 122 .

[0137] The pressure or temperature of the gas after reaching the exhaust chamber 122 is detected by the air pressure detection element 13. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0138] In some embodiments, when the first cavity 1251 is separately provided, the battery includes an air pressure detection element 13 , and the air pressure detection element 13 is provided in the first cavity 1251 .

[0139] The air pressure detection element 13 refers to an instrument for measuring the air pressure of the gas, and the air pressure of the gas can be displayed by pressure or temperature. Generally, the air pressure detection element 13 includes a sensing part and a detection part, and the sensing part and the detection part are electrically connected to transmit a detection signal. The detection part is used to contact the gas and measure the air pressure of the gas, and the sensing part is used to transmit the detection signal obtained by the detection part to the electrical accessories or modules in the second compartment 123, for example, it can be transmitted to the control part, and the control part determines whether the detection signal meets the set threshold value. If it does not meet the set threshold value, the control part controls the alarm mechanism to alarm.

[0140] The pressure or temperature of the gas after reaching the first cavity 1251 is detected by the air pressure detection element 13. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0141] In some other embodiments, the air pressure detection element 13 may also be disposed in the exhaust chamber 122, and the first cavity 1251 may be used as a space for auxiliary expansion.

[0142] The exhaust chamber 122 is a relatively flat space, and its size along the height direction of the battery cell 11 is small. Compared with being set in the exhaust chamber 122, the first cavity 1251 is more conducive to the installation of the air pressure detection element 13. In addition, since the first cavity 1251 is the farthest area that the gas can reach, obtaining the pressure or temperature of the gas in the first cavity 1251 through the air pressure detection element 13 is more conducive to judging whether the gas will eventually explode.

[0143] Of course, air pressure detection elements 13 may also be provided in the exhaust chamber 122 and the first cavity 1251, respectively, and the changing trends of the gas pressure and temperature may be obtained according to the air pressure detection elements 13 located at different positions on the gas flow path.

[0144] In some embodiments, when the first cavity 1251 and the second cavity 1252 are additionally provided and the second cavity 1252 and the second chamber 123 are isolated from each other, the battery includes an air pressure detection element 13 , and the air pressure detection element 13 is provided in the second cavity 1252 .

[0145] The pressure or temperature of the gas after reaching the second cavity 1252 is detected by the air pressure detection element 13. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0146] In some other embodiments, the air pressure detection element 13 may also be disposed in the first cavity 1251 , and the second cavity 1252 may be used as a space for auxiliary capacity expansion.

[0147] Since the second cavity 1252 is the farthest area that the gas can reach, compared with being set in the first cavity 1251, obtaining the pressure or temperature of the gas in the second cavity 1252 through the air pressure detection element 13 is more conducive to judging whether the gas will eventually explode.

[0148] In some other embodiments, the air pressure detection element 13 may also be disposed in the exhaust chamber 122, and the first cavity 1251 and the second cavity 1252 may be used as auxiliary expansion spaces.

[0149] The exhaust chamber 122 is a relatively flat space, and its size along the height direction of the battery cell 11 is small. Compared with being set in the exhaust chamber 122, the second cavity 1252 is more conducive to the installation of the air pressure detection element 13. In addition, since the second cavity 1252 is the farthest area that the gas can reach, obtaining the pressure or temperature of the gas in the second cavity 1252 through the air pressure detection element 13 is more conducive to judging whether the gas will eventually explode.

[0150] Of course, air pressure detection elements 13 may be respectively provided in the exhaust chamber 122, the first cavity 1251, and the second cavity 1252 to obtain the changing trends of the gas pressure and temperature according to the air pressure detection elements 13 located at different positions on the gas flow path.

[0151] In some embodiments, when the first cavity 1251 and the second cavity 1252 are additionally provided and the second cavity 1252 is in communication or can be in communication with the second compartment 123 , the battery includes an air pressure detection element 13 , and the air pressure detection element 13 is provided in the second compartment 123 .

[0152] For example, in the above embodiment with the trigger mechanism or pores, the air pressure detection element 13 can be arranged in the second bin 123. For example, in the above embodiment with the hot melt mechanism, the second cavity 1252 and the second bin 123 are isolated under normal conditions, and are connected when the battery cell 11 has thermal runaway, and the air pressure detection element 13 can be arranged in the second bin 123.

[0153] The pressure or temperature of the gas after reaching the second chamber 123 is detected by the air pressure detection element 13. If the obtained value exceeds the set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0154] In some other embodiments, the air pressure detection element 13 may also be disposed in at least one of the second cavity 1252 , the first cavity 1251 , and the exhaust chamber 122 .

[0155] Since the second chamber 123 is the farthest area that the gas can reach, compared with the second cavity 1252, the first cavity 1251 or the exhaust chamber 122, obtaining the pressure or temperature of the gas in the second chamber 123 through the air pressure detection element 13 is more conducive to judging whether the gas will eventually explode. In addition, the exhaust chamber 122 is a relatively flat space, and its size along the height direction of the battery cell 11 is small. Compared with being set in the exhaust chamber 122, the second cavity 1252 is more conducive to the setting of the air pressure detection element 13.

[0156] Of course, air pressure detection elements 13 may also be respectively provided in the exhaust bin 122, the first cavity 1251, the second cavity 1252, and the second bin 123 to obtain the changing trends of the gas pressure and temperature according to the air pressure detection elements 13 located at different positions on the gas flow path.

[0157] In some embodiments, when the first cavity 1251 and the second cavity 1252 are added, the second cavity 1252 and the second compartment 123 are isolated or connected, and the battery includes an air pressure detection element 13, the air pressure detection element 13 includes a sensing part and a detection part connected to the sensing part, the sensing part is arranged in the second compartment 123, and the detection part is arranged in the second cavity 1252.

[0158] The sensing part refers to a part of the air pressure detection element 13. The sensing part connects the detection part and the control part of the battery, and the data detected by the detection part can be sent to the control part.

[0159] The detection part refers to another part of the air pressure detection element 13, which is connected to the sensing part and can detect the air pressure or temperature of the gas in the environment and send it to the control part through the sensing part. For example, it can be a probe or a probe structure.

[0160] The air pressure detection element 13 detects the pressure or temperature of the gas reaching the second cavity 1252. If the obtained value exceeds a set threshold, an alarm is triggered so that other explosion-proof measures can be provided.

[0161] For example, in the above-mentioned embodiment with the triggering mechanism or the fine hole, the second cavity 1252 is connected to the second chamber 123 , the sensing part can be arranged in the second chamber 123 , and the detection part can be arranged in the second cavity 1252 .

[0162] For example, in the above-mentioned embodiment with a hot melt mechanism, the second cavity 1252 and the second compartment 123 are isolated under normal conditions and connected when thermal runaway occurs in the battery cell 11 . The sensing part can be arranged in the second compartment 123 , and the detection part can be arranged in the second cavity 1252 .

[0163] In some embodiments, the cavity 125 is provided with a plurality of guide structures 1253, which are arranged sequentially along the extension direction of the cavity 125, and are configured to allow the gas discharged from the valve member 112 to flow through the plurality of guide structures 1253 sequentially along the extension direction.

[0164] The flow-guiding structure 1253 refers to a structure that is disposed on the flow path of the gas and does not hinder the normal passage of the gas. Each flow-guiding structure 1253 can deflect the direction of the gas that is about to flow through it.

[0165] The functions of the flow guide structure 1253 are: first, it can extend the flow path, and the gas diffuses along the flow path, and the gas pressure decreases as it diffuses. Second, it can increase the contact area and contact time between the gas and the physical structure, thereby reducing the gas temperature. Third, the flow guide structure 1253 can block some easily detonated impurities, and through the action of multiple flow guide structures 1253, the easily detonated impurities can be effectively filtered.

[0166] The multiple flow-guiding structures 1253 can filter the explosive impurities in the gas one by one, and gradually reduce the temperature of the gas, thereby improving the pressure-reducing and temperature-reducing effects of the first cavity 1251 on the gas.

[0167] In some embodiments, a portion of the cavity wall of the cavity 125 protrudes toward the center of the cavity 125 relative to another portion of the cavity wall to form a guide structure 1253 .

[0168] The flow guide structure 1253 is formed by using a part of the cavity wall of the cavity 125 , thereby simplifying the structure of the frame where the cavity 125 is located, simplifying the structure of the supporting member 12 , and reducing the manufacturing cost.

[0169] In other embodiments, different guide structures 1253 are disposed at different circumferential positions of the cavity 125, and the extension direction of the cavity is perpendicular to the circumferential direction.

[0170] Multiple guide structures 1253 are arranged in sequence along the extension direction of the cavity 125. Different guide structures 1253 are arranged at different circumferential positions. Different guide structures 1253 can filter and cool the gas from different circumferential positions, that is, they act on the gas from the entire circumference, further improving the pressure reduction and temperature reduction effect on the gas.

[0171] In some embodiments, the extension direction of the cavity 125 is the length direction of the cavity 125, that is, Figure 4 and Figure 8 In addition to being arranged in sequence along the length direction of the cavity, multiple guide structures can also be arranged along the second direction or the third direction of the cavity, and the length direction, the second direction, and the third direction of the cavity are arranged perpendicularly to each other.

[0172] Multiple flow-guiding structures 1253 can be arranged along at least one of the first direction, the second direction and the third direction. On the one hand, the arrangement direction of the multiple flow-guiding structures 1253 can be flexibly set according to the cross-sectional structure of the support 12, so that the arrangement of the multiple flow-guiding structures 1253 is not limited by the specific structure of the support 12. On the other hand, the multiple flow-guiding structures 1253 can be arranged in multiple directions respectively to improve the cooling and pressure reduction effect on the gas.

[0173] In some embodiments, when the cross-sectional area of ​​the cavity 125 is small, the extension direction of the cavity 125 is selected as the first direction, that is, the length direction of the cavity 125, that is, the multiple guide structures 1253 are arranged in sequence along the length direction.

[0174] In other embodiments, when the cross-sectional area of ​​the cavity 125 is larger, in addition to multiple guide structures 1253 arranged along the first direction in the cavity 125, multiple guide structures 1253 are also arranged along the second direction in the cavity 125, and multiple guide structures 1253 are also arranged along the third direction in the cavity 125.

[0175] It should be noted that whether the flow guiding structure 1253 can be provided in the cavity 125 along the second direction and the third direction depends on the cross-sectional shape of the frame 124. For example, if the cross-sectional shape of the frame 124 is substantially L-shaped or T-shaped, a plurality of flow guiding structures 1253 can be provided in each of the first direction, the second direction and the third direction. For example, if the cross-sectional shape of the frame 124 is substantially I-shaped, a plurality of flow guiding structures 1253 can be provided in each of the first direction and the second direction.

[0176] As an example, Figure 4 and Figure 5 As shown, the cross-section of the frame 124 is generally in an inverted T-shape, and the cavity 125 extends in the first direction, the second direction, and the third direction. The dimension extending in the first direction is much larger than the dimension extending in the second direction and the third direction, and the number of the guide structures 1253 that can be arranged in the first direction is much larger than the number of the guide structures 1253 that can be arranged in the second direction and the third direction.

[0177] In some embodiments, the battery includes an air pressure detection element 13, a guide space is formed between two adjacent guide structures 1253, and the air pressure detection element 13 is arranged in the first or subsequent guide space counted from the side where the exhaust bin 122 is located.

[0178] After the gas flows through the first guide structure 1253 counted from the side where the exhaust chamber 122 is located, it enters between the first guide structure 1253 and the second guide structure 1253, that is, the first guide space. After the gas is depressurized and cooled by at least one guide structure 1253, the gas is tested to achieve the purpose of setting the guide structure 1253.

[0179] In some embodiments, when the first cavity 1251 is added separately, the first cavity 1251 may be provided with the above-mentioned plurality of guide structures 1253. In the first cavity 1251, the air pressure detection element 13 is disposed in the first or subsequent guide space from the side where the exhaust chamber 122 is located.

[0180] In some embodiments, when the first cavity 1251 and the second cavity 1252 are added, at least one of the first cavity 1251 and the second cavity 1252 is provided with the above-mentioned multiple flow guiding structures 1253. For example, the first cavity 1251 and the second cavity 1252 are respectively provided with multiple flow guiding structures 1253, and the second cavity 1252 is provided with an air pressure detection element 13. In the second cavity 1252, the air pressure detection element 13 is provided in the first or subsequent flow guiding space from the side where the first cavity 1251 is located. Among them, for the second cavity 1252, the side where the first cavity 1251 is located is the side where the exhaust chamber 122 is located.

[0181] In some embodiments, the mold cavity 125 includes a plurality of sub-cavities 1254 , and the plurality of sub-cavities 1254 are sequentially arranged along a direction perpendicular to the extension direction of the mold cavity 1254 , and any two adjacent sub-cavities 1254 are connected.

[0182] For example, any two adjacent sub-mold cavities 1254 are connected through a via hole provided on a common side wall.

[0183] The sub-mold cavity 1254 refers to a partial cavity of the first cavity 1251 , and adjacent sub-mold cavities 1254 are separated by a common side wall. Two adjacent sub-mold cavities 1254 are connected to each other, and multiple sub-mold cavities 1254 are connected to form an assembly of the cavity 125 .

[0184] The multiple sub-cavities 1254 can filter the explosive impurities in the gas one by one, and gradually reduce the temperature of the gas, thereby improving the pressure reduction and temperature reduction effect of the first cavity 1251 on the gas.

[0185] In some embodiments, the extension direction of the cavity 125 is the length direction of the cavity 125, that is, Figure 4 and Figure 8 The plurality of sub-mold cavities 1254 may be arranged in sequence along the second direction, and the plurality of sub-mold cavities 1254 may also be arranged in sequence along the third direction. The length direction, the second direction and the third direction of the mold cavity 125 are perpendicular to each other.

[0186] Multiple parting cavities 1254 can be arranged along at least one of the second direction and the third direction. On the one hand, the arrangement direction of the multiple parting cavities 1254 can be flexibly set according to the cross-sectional shape of the frame 124, so that the arrangement of the multiple parting cavities 1254 is not limited by the specific shape of the frame 124. On the other hand, the multiple parting cavities 1254 can be arranged in multiple directions respectively to improve the cooling and pressure reducing effect on the gas.

[0187] It should be noted that whether the mold cavity 125 can be divided into a plurality of sub-mold cavities 1254 along the second direction and the third direction depends on the cross-sectional shape of the frame 124. For example, if the cross-sectional shape of the frame 124 is roughly L-shaped or T-shaped, the mold cavity 125 can be divided in each of the second direction and the third direction to form a plurality of sub-mold cavities 1254. For example, if the cross-sectional shape of the frame 124 is roughly I-shaped, the mold cavity 125 can be divided in the second direction to form a plurality of sub-mold cavities 1254.

[0188] As an example, Figure 4 and Figure 5As shown, the cross-sectional shape of the frame 124 is roughly an inverted T-shape, and the cavity 125 extends in the second direction and the third direction. The cavity 125 can be divided in the second direction to form a plurality of sub-cavities 1254, and the cavity 125 can also be divided in the third direction to form a plurality of sub-cavities 1254.

[0189] In some embodiments, when the first cavity 1251 is added separately, the first cavity 1251 can be divided in at least one of the second direction and the third direction to form a plurality of sub-cavities 1254, and a plurality of guide structures 1253 can be provided along the length direction of each sub-cavity 1254. An air pressure detection element 13 can be provided in any sub-cavity 1254, and the air pressure detection element 13 is provided in the first or subsequent guide space counted from the side where the exhaust bin 122 is located.

[0190] In some embodiments, when the first cavity 1251 and the second cavity 1252 are additionally provided, at least one of the first cavity 1251 and the second cavity 1252 may be divided in at least one direction to form a plurality of sub-cavities 1254 .

[0191] For example, in the first cavity 1251, the first cavity 1251 has a second direction and a third direction respectively perpendicular to its length direction, and the first cavity 1251 is divided in the second direction and the third direction to form a plurality of sub-cavities 1254. Further, each sub-cavity 1254 in the first cavity 1251 can be provided with a plurality of guide structures 1253 along its length direction. In any sub-cavity 1254 of the first cavity 1251, an air pressure detection element 13 can be provided, and the air pressure detection element 13 is provided in the first or subsequent guide space counted from the side where the exhaust bin 122 is located.

[0192] For example, in the second cavity 1252, the second cavity 1252 has a second direction and a third direction respectively perpendicular to the length direction thereof, and the second cavity 1252 is divided in the second direction and the third direction to form a plurality of sub-cavities 1254. Further, each sub-cavity 1254 in the second cavity 1252 can be provided with a plurality of guide structures 1253 along its length direction. In any sub-cavity 1254 of the second cavity 1252, an air pressure detection element 13 can be provided, and the air pressure detection element 13 is provided in the first or subsequent guide space counted from the side where the first cavity 1251 is located.

[0193] When both the first cavity 1251 and the second cavity 1252 are divided into a plurality of sub-cavities 1254 , at least one sub-cavity 1254 in the first cavity 1251 may be connected to at least one sub-cavity 1254 in the second cavity 1252 .

[0194] In some embodiments, the frame 124 includes four first frames 1241 and three second frames 1242, and the first frames 1241 and the second frames 1242 are both linear. The four linear first frames 1241 are spliced ​​end to end to form a square first bin 121. The three linear second frames 1242 are spliced ​​in sequence to form a U-shaped first bin 121. The two farthest second frames 1242 are respectively connected to the two ends of the same first frame 1241, and the first frame 1241 serves as a common part of the first bin 121 and the second bin 123. Each of the first cavity 1251 and the second cavity 1252 is divided into a plurality of sub-cavities 1254, and each sub-cavity 1254 is provided with a plurality of guide structures 1253. In addition, the second cavity 1252 and the second bin 123 are connected by a triggering mechanism, or isolated by a hot melt mechanism under normal conditions and connected under hot melt conditions, and an air pressure detection element 13 is provided in the second bin 123.

[0195] Another object of the embodiment of the present application is to provide an electric device 100 , which includes the battery 10 as described above.

[0196] The electrical device 100 provided by the present technical solution adopts the battery 10 provided by the above technical solution. In the battery 10 provided by the above technical solution, the electrical connection side of the battery cell 11 and the exhaust side of the battery cell 11 are isolated by the battery cell 11 itself, and the insulation setting of the electrical connection side is free from being affected by the gas discharged by the valve member 112. The risk of detonation of the battery cell 11 is reduced or eliminated, and the safety risk of the electrical device 100 is reduced or eliminated.

[0197] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: The battery comprises a battery cell and a supporting member, wherein the supporting member is provided with a configuration chamber and an exhaust chamber; The battery cell is arranged in the configuration chamber, and the battery cell includes a shell, an electrode and a valve member. The valve member is arranged on a side of the shell facing the exhaust chamber and is connected with the exhaust chamber in a conducting state. The electrode is arranged on a side of the shell facing away from the valve member.

2. The battery according to claim 1, characterized in that: The supporting member includes a frame that surrounds the configuration chamber, and at least a portion of the frame is provided with a cavity, and the cavity is communicated with the exhaust chamber.

3. The battery according to claim 2, characterized in that: The configuration bin includes a first bin and a second bin arranged at intervals; the frame includes a first frame enclosing the first bin and a second frame enclosing the second bin; the mold cavity includes a first mold cavity provided in the first frame and a second mold cavity provided in the second frame; Wherein, the first cavity and the second cavity are respectively communicated with the exhaust chamber.

4. The battery according to claim 2, characterized in that: The configuration bin includes a first bin and a second bin arranged at intervals; the frame includes a first frame enclosing the first bin and a second frame enclosing the second bin; the mold cavity includes a first mold cavity provided in the first frame and a second mold cavity provided in the second frame; Wherein, the first cavity is connected to the exhaust chamber and the second cavity.

5. The battery according to claim 3 or 4, characterized in that: Part of the first frame and part of the second frame overlap to form a common part of the first bin and the second bin, and the first bin and the second bin are respectively arranged on both sides of the common part.

6. The battery according to any one of claims 3 to 5, characterized in that: The second bin and the second cavity are connected to each other.

7. The battery according to claim 6, characterized in that: The second frame is provided with a configuration hole, and the second bin and the second cavity are respectively provided on both sides of the configuration hole; the supporting member includes an air inlet mechanism, and the air inlet mechanism is arranged in the configuration hole; The air introduction mechanism is provided with an air gap hole, and the air gap hole communicates with the second bin and the second cavity; or the air introduction mechanism is in clearance fit with the hole wall of the configuration hole.

8. The battery according to any one of claims 3 to 5, characterized in that: The second frame is provided with a configuration hole, and the second bin and the second cavity are respectively provided on two sides of the configuration hole; The support member includes a hot melt mechanism disposed in the configuration hole, wherein the hot melt mechanism is configured to isolate the second bin and the second cavity in a complete state and to connect the second bin and the second cavity in a state of being at least partially hot-melted.

9. The battery according to claim 2, characterized in that: The battery comprises an air pressure detection element, and the air pressure detection element is arranged in the cavity.

10. The battery according to any one of claims 3 to 5, characterized in that: The battery includes an air pressure detection element, the second compartment and the second cavity are isolated and arranged, and the air pressure detection element is arranged in the second cavity 。 11. The battery according to any one of claims 3 to 8, characterized in that: The battery includes an air pressure detection element, and the air pressure detection element includes a sensing part and a detection part connected to the sensing part. The sensing part is arranged in the second compartment, and the detection part is arranged in the second cavity.

12. The battery according to any one of claims 6 to 8, characterized in that: The battery includes an air pressure detection element, and the air pressure detection element is arranged in the second compartment.

13. The battery according to any one of claims 2 to 12, characterized in that: The cavity is provided with a plurality of flow-guiding structures, which are arranged sequentially along the extension direction of the cavity, and are configured to allow the gas discharged from the valve member to flow through the plurality of flow-guiding structures sequentially along the extension direction of the cavity.

14. The battery according to claim 13, characterized in that: A portion of the cavity wall of the cavity protrudes toward the center of the cavity relative to another portion of the cavity wall to form the flow guide structure.

15. The battery according to claim 14, characterized in that: Different flow-guiding structures are arranged at different circumferential positions of the cavity; Wherein, the extension direction of the cavity is perpendicular to the circumferential direction.

16. The battery according to any one of claims 13 to 15, characterized in that: The battery comprises an air pressure detection element, a flow guiding space is formed between two adjacent flow guiding structures, and the air pressure detection element is arranged in the flow guiding space.

17. The battery according to any one of claims 13 to 16, characterized in that: The mold cavity comprises a plurality of sub-mold cavities, and the plurality of sub-mold cavities are arranged in sequence along a direction perpendicular to the extending direction of the mold cavity, and any two adjacent sub-mold cavities are connected.

18. An electrical device, characterized in that: The electrical device comprises a battery as claimed in any one of claims 1 to 17.

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