Batteries and power consumption devices

Abstract

This application provides a battery (10) and a power consumption device (100), the battery (10) comprising a battery core (11) and a holder (12), the holder (12) being provided with a mounting chamber (120) and an exhaust chamber (122), the battery core (11) being provided in the mounting chamber (120), the battery core (11) comprising a housing (113), an electrode (111) and a valve body (112), the valve body (112) being provided on the side of the housing (113) facing the exhaust chamber (122) and communicating with the exhaust chamber (122) in a conductive state, and the electrode (111) being provided on the side of the housing (113) facing away from the valve body (112).

Description

Technical Field

[0001] [Cross - reference to Related Applications] This application claims the benefit of Chinese Patent Application No. 202311497844.7, filed on November 10, 2023, entitled "Battery and Power - consuming Device", which is incorporated herein by reference in its entirety.

[0002] This application belongs to the field of new energy technologies, and more specifically, relates to batteries and power - consuming devices.

Background Art

[0003] Generally, an explosion - proof valve is provided in the battery core of a battery. The explosion - proof valve is provided on the side where the electrodes of the battery core are located. The electrodes of the battery core are electrically connected to other electrical components. It is necessary to install an insulating material for realizing insulation between the electrical connection point between the electrode and the electrical component and other easily - conductive structures or materials. Since the explosion - proof valve is provided on the side where the electrodes are located, when the pressure - releasing mechanism is breached by high - temperature gas, the high - temperature gas is discharged from the side where the electrodes are located, which easily destroys the insulating material. Due to the failure of the insulating material, the risk of a short - circuit failure of the battery core is significantly increased, which is disadvantageous for improving the safety performance of the battery.

Summary of the Invention

Problems to be Solved by the Invention

[0004] One of the purposes of the embodiments of this application is to provide a battery and a power - consuming device for solving the conventional technical problem of the high risk of causing the detonation of the battery core because the exhaust of the battery is provided on the side where the electrodes are located.

Means for Solving the Problems

[0005] To achieve the above object, this application adopts the following technical solutions.

[0006] Provide a battery, the battery includes a battery core and a holder, and the holder is provided with an arrangement chamber and an exhaust chamber. The battery core is provided in the arrangement chamber, and the battery core includes a housing, electrodes, and a valve body, the valve body being provided on the side of the housing facing the exhaust chamber and communicating with the exhaust chamber in a conductive state, and the electrodes being provided on the side of the housing facing away from the valve body.

[0007] In this proposed technology, the battery is used in which a valve body for venting gas from inside the battery is provided on the side facing away from the electrodes. In other words, the electrical connection of the electrodes and the exhaust from the valve body are separated by the battery core itself, and the insulating installation on the side where the electrodes are located is not affected by the gas exhausted from the valve body, thereby reducing or eliminating the risk of the battery core detonating.

[0008] In some embodiments, the holder includes a frame that surrounds the arrangement chamber, and at least a portion of the frame is provided with a cavity that communicates with the exhaust chamber.

[0009] By adding a cavity, the gas diffusion space can be expanded and the gas flow path can be extended. While the gas pressure can be reduced by increasing the capacity, the risk of detonation at high pressure and high temperature can be reduced by extending the path and filtering out easily ignitable impurities and lowering the temperature.

[0010] In some embodiments, the arrangement chamber includes a first chamber and a second chamber spaced apart from each other, the frame includes a first frame forming around the first chamber and a second frame forming around the second chamber, and the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame. The first cavity and the second cavity are each connected to the exhaust chamber.

[0011] By adding the first and second cavities, the gas diffusion space can be expanded and the gas flow path can be extended. While the increased capacity can reduce the gas pressure, extending the path allows for filtering out easily ignitable impurities and lowering the temperature, thereby reducing the risk of detonation at high pressure and temperature.

[0012] In some embodiments, the arrangement chamber includes a first chamber and a second chamber spaced apart from each other, the frame includes a first frame forming around the first chamber and a second frame forming around the second chamber, and the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame. The first cavity communicates with the exhaust chamber and the second cavity.

[0013] By adding the first and second cavities, the gas diffusion space can be sequentially expanded, and the gas flow path can be further extended. While the increased capacity allows for a further reduction in gas pressure, extending the path further allows for filtering out explosive impurities and lowering the temperature, thereby reducing the risk of detonation at even higher pressures and temperatures.

[0014] In some embodiments, a portion of the second frame and a portion of the first frame are installed to overlap, forming a common area between the first chamber and the second chamber, with the first chamber and the second chamber each located on either side of the common area.

[0015] A portion of the first frame or a portion of the second frame serves as a common part between the first and second chambers, allowing the first and second chambers to be installed adjacent to each other. The closer the first and second chambers are to each other, the easier it becomes to achieve a continuous installation between the first and second cavities.

[0016] In some embodiments, the second chamber and the second cavity are installed in communication with each other.

[0017] The gas discharged from the valve body flows through the exhaust chamber, the first cavity, and the second cavity, where the gas temperature and pressure are effectively reduced, flammable impurities are effectively filtered out, and the second chamber can be used as a space to assist in expanding the volume.

[0018] In some embodiments, the second frame is provided with a placement hole, and the second chamber and the second cavity are provided on both sides of the placement hole, The holder includes a bleed air mechanism positioned in the arrangement hole, The bleed air mechanism is provided with an air gap hole communicating with the second chamber and the second cavity, or the bleed air mechanism is fitted into the gap wall of the arrangement hole.

[0019] The second chamber and the second cavity are kept in communication by an air gap hole or crevice fitting, allowing a small amount of gas to enter the second chamber, which can then accommodate a small amount of gas as an auxiliary volume-expanding space.

[0020] In some embodiments, the second frame is provided with a placement hole, and the second chamber and the second cavity are provided on both sides of the placement hole, The holder includes a heat-sealing mechanism positioned in the arrangement hole, the heat-sealing mechanism being configured to completely isolate the second chamber and the second cavity, and to communicate with the second chamber and the second cavity in such a state that at least a portion of it is heat-sealed.

[0021] After at least a portion of the heat-sealing mechanism is heat-sealed by the gas discharged from the valve body, the second chamber and the second cavity are connected, and the second chamber can be used as a space to assist in expanding the volume.

[0022] In some embodiments, the battery includes a pressure sensing element provided in the first cavity.

[0023] After the gas arrives at the first cavity by the pressure detection element, the pressure or temperature is detected. When the obtained numerical value exceeds the set threshold value, an alarm is triggered to provide other explosion protection measures.

[0024] In some embodiments, the battery includes a pressure detection element, the second chamber and the second cavity are installed separately, and the pressure detection element is provided in the second cavity.

[0025] The pressure detection element detects the pressure or temperature of the gas that has arrived at the second cavity. When the obtained numerical value exceeds the set threshold value, an alarm is triggered to provide other explosion protection measures.

[0026] In some embodiments, the battery includes a pressure detection element including a sensor part and a detection part connected to the sensor part. The sensor part is provided in the second chamber, and the detection part is provided in the second cavity.

[0027] The pressure detection element detects the pressure or temperature of the gas that has arrived at the second cavity. When the obtained numerical value exceeds the set threshold value, an alarm is triggered to provide other explosion protection measures.

[0028] In some embodiments, the battery includes a pressure detection element provided in the second chamber.

[0029] The pressure detection element detects the pressure or temperature of the gas that has arrived at the second chamber. When the obtained numerical value exceeds the set threshold value, an alarm is triggered to provide other explosion protection measures.

[0030] In some embodiments, a plurality of flow guiding structures are sequentially provided in the first cavity along the extending direction of the first cavity. The plurality of flow guiding structures are configured to allow the gas discharged from the valve body to sequentially flow through the plurality of flow guiding structures along the extending direction of the cavity.

[0031] Multiple flow guide structures sequentially filter out easily ignitable impurities in the gas, gradually reduce the gas temperature, and improve the pressure-reducing and cooling effects on the gas in the first cavity.

[0032] 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, forming the flow guide structure.

[0033] By utilizing a portion of the cavity wall to form a flow guide structure, the structure of the frame in which the cavity is located is simplified, the structure of the holder is simplified, and manufacturing costs are reduced.

[0034] In some embodiments, the different flow guide structures are located at different circumferential positions of the cavity, and the direction of extension of the cavity is perpendicular to the circumferential direction.

[0035] Multiple flow guide structures are sequentially installed along the extending direction of the cavity, and different flow guide structures are located at different circumferential positions. These different flow guide structures filter and cool the gas from different circumferential positions, meaning they act on the gas from all directions, further improving the pressure-reducing and temperature-reducing effect on the gas.

[0036] In some embodiments, the battery includes a pressure sensing element, a flow guide space is formed between two adjacent flow guide structures, and the pressure sensing element is provided in the flow guide space.

[0037] The gas flows through the first flow guide structure counting from the side where the exhaust chamber is located, and then enters at least one flow guide space. After the gas is depressurized and cooled by at least one flow guide structure, the gas is detected to achieve the purpose of installing the flow guide structure.

[0038] In some embodiments, the cavity includes a plurality of branch cavities sequentially arranged along a direction perpendicular to the extending direction of the cavity, and any two adjacent branch cavities are in communication with each other.

[0039] Multiple branched cavities sequentially filter out easily ignitable impurities from the gas, progressively reduce the gas temperature, and improve the pressure-reducing and cooling effects of the first cavity on the gas.

[0040] Another object of the embodiments of this application is to provide a power consumption device including the battery described above.

[0041] The power consumption device according to this proposed technology employs the battery according to the above proposed technology. In the battery according to the above proposed technology, the electrical connection side of the battery core and the exhaust side of the battery core are separated by the battery core itself. The insulating installation of the electrical connection side is not affected by the gas discharged from the valve body, reducing or eliminating the risk of the battery core detonating, and thus reducing or eliminating the safety risk of the power consumption device. [Brief explanation of the drawing]

[0042] To more clearly illustrate the technical concepts in the embodiments of this application, the following briefly introduces the drawings that may be used in the embodiments or prior art descriptions. It is obvious that the drawings in the following description are only a few embodiments of this application, and those skilled in the art can obtain other drawings based on these without expending any creative effort. [Figure 1] This is a schematic diagram of a power consumption device according to an embodiment of the present application. [Figure 2] This is a schematic diagram of the battery exploded according to the embodiment of this application. [Figure 3] This is a schematic diagram of a battery according to an embodiment of this application. [Figure 4] This is a cross-sectional view in the AA direction in Figure 3. [Figure 5] This is a magnified view of section A in Figure 4. [Figure 6] This is a schematic diagram of a battery according to an embodiment of this application. [Figure 7] This is a schematic diagram of a holder according to an embodiment of the present application. [Figure 8] This is a cross-sectional view in the BB direction in Figure 7. [Figure 9] This is a magnified view of section B in Figure 8. [Figure 10] This is a schematic diagram of the section on the second frame where the bleed air mechanism is located according to an embodiment of this application. [Figure 11] This is a magnified view of section C in Figure 10. [Modes for carrying out the invention]

[0043] To clarify the technical problem, technical solution, and beneficial effects that this application aims to solve, the application will be described in more detail, linking it with the following drawings and embodiments. It should be understood that the specific embodiments described herein are for interpretation purposes only and do not limit this application.

[0044] It should be explained that when an element is referred to as "fixed to" or "installed on" another element, it may be directly or indirectly positioned on the other element. When one element is referred to as "connected" to another element, it may be directly or indirectly connected to the other element.

[0045] It should be understood that the directions or positional relationships indicated by terms such as "length," "width," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are directions or positional relationships shown based on the drawings and are merely for the convenience and simplification of the description in this application. They do not indicate or imply that the mentioned device or element has a specific direction or must be configured and operated in a specific direction, and therefore should not be understood as limitations on this application.

[0046] Furthermore, the terms "first" and "second" are used solely for descriptive purposes and should not be understood as implying relative importance or implicitly indicating the number of technical features being referred to. Thus, features designated as "first" and "second" may explicitly or implicitly include one or more such features. In the description of this application, unless otherwise specifically limited, "multiple" means two or more.

[0047] Thermal runaway in a battery core is a phenomenon in which the temperature of the battery core increases rapidly due to one or more contributing factors. This thermal runaway causes a rapid rise in the temperature of the battery core, releasing a large amount of heat and harmful gases simultaneously, which poses a risk of detonating the battery.

[0048] As an example, the process of a battery spontaneously igniting or exploding due to thermal runaway of the battery core is enumerated: the negative electrode SEI (Solid Electrolyte Interface) inside the battery core decomposes, the separator separating the negative electrode and the electrolyte decomposes and dissolves, the negative electrode reacts with the electrolyte, and the positive electrode and electrolyte decompose, causing a large-area short circuit inside the battery core, the electrolyte enters a state of combustion, the battery core undergoes thermal runaway, and the battery spontaneously ignites and explodes.

[0049] During normal charging and discharging of a battery core, electrolyte fills the space between the positive and negative electrodes. The orientation and movement of ions within the electrolyte and the orientation and movement of electrons within the external conductors form a closed circuit, continuously sustaining the chemical reaction between the positive and negative electrodes. This generates an electric current during the orderly electron transition, enabling the conversion of chemical energy into electrical energy. Therefore, the positive and negative electrodes need to be electrically connected to other electrical components.

[0050] Furthermore, the side of the battery core where the positive and negative electrodes are located is generally provided with one or more conductive structures or materials. To prevent safety concerns arising from conductivity between the positive and negative electrodes of the battery core and these structures or materials, insulating structures or materials must be used to isolate them, ensuring effective insulation performance during battery use.

[0051] Generally, explosion-proof valves are installed on the side of the battery core where the positive and negative electrodes are located. When a battery core experiences thermal runaway, the temperature inside the battery core rises rapidly, generating high-temperature, high-pressure gas at high speed. The impact of this high-temperature, high-pressure gas causes the explosion-proof valve to become conductive, ejecting gas toward the side of the battery core where the electrodes are located. This high-temperature, high-pressure gas easily destroys the insulating structure or insulating material, and insulation failure significantly increases the risk of the battery core detonating.

[0052] Based on the above, in order to reduce or eliminate the adverse effects of gas ejected due to thermal runaway of the battery core on the insulation installation on the side where the electrodes of the battery core are located, a battery is provided including a battery core and a holder, the holder being provided with a placement chamber and an exhaust chamber. The battery core is provided in the placement chamber and includes a housing, electrodes and a valve body, the valve body being provided on the side of the housing facing the exhaust chamber and communicating with the exhaust chamber in a conductive state, and the electrodes being provided on the side of the housing facing away from the valve body.

[0053] In this proposed technology, the battery 10 has a valve body 112 that expels gas from inside the battery 10, which is located on the side facing away from the electrodes 111. In other words, the electrical connection of the electrodes 111 and the exhaust from the valve body 112 are separated by the battery core 11 itself, and the insulating installation on the side where the electrodes 111 are located is not affected by the gas expelled from the valve body 112, thereby reducing or eliminating the risk of the battery core 11 detonating.

[0054] In some embodiments, the battery 10 is a physical module comprising one or more battery cells to provide voltage and capacitance. For example, it may include battery cells, battery modules, battery packs, etc., and one battery cell may include one battery core 11. Generally, the battery 10 comprises battery cells and a housing for housing the battery cells, the housing being used to house and package one or more battery cells or battery modules, and the housing being used to protect the battery cells and prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0055] The battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, and the embodiments of this application are not limited thereto. The battery cell may have a cylindrical, flattened, rectangular, or other shape, and the embodiments of this application are not limited thereto. The battery cell can be classified into three types based on the packaging method: cylindrical battery cells, rectangular battery cells, and pouch battery cells, and the embodiments of this application are not limited thereto.

[0056] Referring to Figure 2, a battery cell is the smallest unit that makes up the battery 10. In the battery 10, there may be multiple battery cells, and the multiple battery cells may be connected in series, in parallel, or in series-parallel. Series-parallel connection means that among the multiple battery cells, there are both series and parallel connections. The multiple battery cells may be directly connected in series, in parallel, or in series-parallel, and then the entire assembly made up of multiple battery cells may be housed in a casing. Of course, the battery 10 may first have multiple battery cells connected in series, in parallel, or in series-parallel to form a battery module, and then the multiple battery modules may be connected in series, in parallel, or in series-parallel to form a single whole, which may then be housed in a casing.

[0057] The housing provides a space for housing the battery cells, and the housing can employ various structures. In some embodiments, the housing is provided that includes an upper housing 15 and a holder 12, where the upper housing 15 and the holder 12 are placed over each other, and together they define a space for housing the battery cells. Here, the holder 12 may be a case structure with one side open, and the upper housing 15 may be a plate-like structure, where the upper housing 15 is placed over the open side of the holder 12, and together they define a space for housing. Both the upper housing 15 and the holder 12 may be case structures with one side open, where the open side of the upper housing 15 is placed over the open side of the holder 12. Of course, the housing formed by the upper housing 15 and the holder 12 may have various shapes, such as a cylinder or a rectangular parallelepiped.

[0058] The power consumption device 100 according to the embodiment of this application may be, but is not limited to, a mobile phone, tablet, laptop computer, electric toy, power tool, battery car, electric vehicle, steamship, or aerospace aircraft. Here, electric toys may include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric steamship toys and electric airplane toys, and aerospace aircraft may include airplanes, rockets, space shuttles and spacecraft.

[0059] Referring to Figure 1, the power consumption device 100 may be a vehicle, which may be a fuel oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle. A battery 10 is installed inside the vehicle, and the battery 10 may be installed at the bottom, front, or rear of the vehicle. The battery 10 may be used to power the vehicle, for example, the battery 10 can be used as the operating power source for the vehicle. The vehicle may further include a controller 101 and a motor 102, the controller 101 is used to control the battery 10 to supply power to the motor 102, for example, to meet the operating power consumption needs of the vehicle during starting, navigation, and driving. In some embodiments, the battery 10 can provide driving power to the vehicle not only as the operating power source for the vehicle, but also as the driving power source for the vehicle, in place of or in part of fuel oil or natural gas.

[0060] Here, the battery 10 and power consumption device 100 according to the embodiment of this application will be described.

[0061] Referring to Figures 3 to 11, the battery 10 according to the embodiment of this application includes a battery core 11 and a holder 12, the holder 12 being provided with a placement chamber 120 and an exhaust chamber 122. The battery core 11 is provided with a housing 113, electrodes 111 and a valve body 112, the valve body 112 is provided on the side of the housing 113 facing the exhaust chamber 122 and communicates with the exhaust chamber 122 in a conductive state, and the electrodes 111 are provided on the side of the housing 113 facing away from the valve body 112.

[0062] A battery core 11 is a single electrical core containing a single positive electrode 1111 and a single negative electrode 1112, and as an electrical energy storage unit, the battery core 11 is the smallest unit of the battery 10. Taking a lithium-ion battery core 11 as an example, the operating voltage of a single lithium-ion battery core 11 is between 3V and 5V, and in order to meet the high voltage and large capacity requirements of the power consumption device 100, multiple battery cores 11 are generally connected in series and parallel to form a battery 10, and electrical energy is supplied to the power consumption device 100 through the battery 10. Here, the battery core 11 may be rectangular or cylindrical.

[0063] The electrodes 111 refer to the positive electrode 1111 and the negative electrode 1112 of the battery core 11. Generally, the positive electrode 1111 and the negative electrode 1112 are located on the same side of the battery core 11. For example, the battery core 11 may have multiple sides, and the positive electrode 1111 and the negative electrode 1112 may be located on the same side.

[0064] In some embodiments, the positive electrode 1111 and the negative electrode 1112 are located on different sides of the battery core 11 that are substantially on the same side, with the side where the positive electrode 1111 is located and the side where the valve body 112 is located being spaced apart, and the side where the negative electrode 1112 is located and the side where the valve body 112 is located being spaced apart. For example, the battery core 11 has multiple sides, and the positive electrode 1111, the negative electrode 1112 and the valve body 112 are each located on different sides, with the side where the positive electrode 1111 is located and the side where the negative electrode 1112 is located being at an angle, the side where the valve body 112 is located being away from and substantially backward from the side where the positive electrode 1111 is located, and the side where the valve body 112 is located being away from and substantially backward from the side where the negative electrode 1112 is located.

[0065] The holder 12 refers to a component that can at least lift or hold the battery core 11, and also refers to a component that can arrange multiple battery cores 11 in an orderly manner, and serves roles such as support, protection, heat dissipation, fire prevention, and explosion prevention. For example, the holder 12 may be part of the housing of the battery 10. The holder 12 may be a plate structure, and it positions one or more battery cores 11 on the plate.

[0066] The placement chamber 120 is a compartment on which at least one battery core 11 provided by the holder 12 can be placed, has a certain volume, and can accommodate one or more battery cores 11. Generally, the placement chamber 120 has a certain height, which is approximately higher than the height of the battery core 11, and multiple battery cores 11 are often arranged in an array in at least some of the placement chambers 120.

[0067] The exhaust chamber 122, unlike the placement chamber 120 provided by the holder 12, is an exhaust compartment having a certain volume, and the gas discharged from the valve body 112 may be collected in the exhaust chamber 122, discharged to another space through the exhaust chamber 122, or discharged to the battery 10 through the exhaust chamber 122, and the exhaust chamber 122 provides at least a portion of the path for discharging the gas to the battery core 11.

[0068] Generally, the side where the electrode 111 is located faces upward, the side where the valve body 112 is located faces downward, the exhaust chamber 122 is located below the mounting chamber 120, the battery core 11 is fixed to the mounting chamber 120 by the side where the valve body 112 is located, and the side where the valve body 112 is located separates the mounting chamber 120 from the exhaust chamber 122.

[0069] As shown in Figure 6, in some embodiments, the holder 12 includes an under support 126 and an under guard 127 installed spaced apart from each other, with a partition space 128 formed between them, and the battery core 11 is provided on the side of the under support 126 away from the under guard 127. The under support 126 is provided with an exhaust hole 1261, the side of the battery core 11 where the valve body 112 is located is connected to the under support 126, the side where the valve body 112 is located covers the exhaust hole 1261, the valve body 112 is exposed to the exhaust hole 1261, and the gas discharged from the valve body 112 enters the partition space 128 through the exhaust hole 1261, and the exhaust hole 1261 and the partition space 128 together form an exhaust chamber 122.

[0070] In some embodiments, the battery 10 includes a plurality of battery cores 11, the under support 126 is provided with a plurality of exhaust holes 1261, one battery core 11 covers one exhaust hole 1261, and a plurality of valve bodies 112 are each exposed to the plurality of exhaust holes 1261, and the gas discharged from the plurality of valve bodies 112 all enter the exhaust chamber 122.

[0071] In some embodiments, the side on which the valve body 112 is located, in addition to the area occupied by the valve body 112, is laminated with the undersupport 126 via an insulating material 129. Generally, the insulating material 129 does not conduct current, and its role is to block current from flowing between the metallic undersupport 126 and the metallic core case of the battery core 11.

[0072] In some embodiments, the insulating material 129 may be a fluid adhesive, which is used to bond the undersupport 126 to the side where the valve body 112 is located, and after the fluid adhesive has solidified, the insulating material 129 is formed to achieve the purpose of fixing and insulating the battery core 11.

[0073] In this embodiment, the battery 10 is used such that the valve body 112 for discharging gas from inside the battery 10 is located on the side facing away from the electrodes 111. In other words, the electrical connection of the electrodes 111 and the exhaust from the valve body 112 are separated by the battery core 11 itself, and the insulating installation on the side where the electrodes 111 are located is not affected by the gas discharged from the valve body 112, thereby reducing or eliminating the risk of the battery core 11 detonating.

[0074] In some embodiments, the holder 12 includes a frame 124 that surrounds the placement chamber 120, and at least some of the frame 124 is provided with a cavity 125 that communicates with the exhaust chamber 122.

[0075] The frame 124 is a framework structure provided on the side of the holder 12 and having a certain length, used to partition and limit the area of ​​the holder 12. The battery core 11 and exhaust chamber 122 are provided inside the frame 124, that is, within the area limited by the frame 124.

[0076] In some embodiments, the holder 12 may include a plurality of frames 124, which are successfully joined together to define the extent of the holder 12. Alternatively, some of the plurality of frames 124 may enclose and define the spatial extent of the holder 12, while other parts of the plurality of frames 124 may partition the spatial extent of the holder 12, dividing it into several chambers, in which the battery core 11 is located at least one of these chambers.

[0077] In some embodiments, the holder 12 may be part of the battery box body, and the frame 124 may be part of the frame of the battery box body.

[0078] The cavity 125 is an empty cavity formed by removing some of the material from inside the frame 124, and has a certain extended size or volume, which can extend the gas flow path or increase the gas diffusion volume. In some embodiments, the cavity 125 has its longest extended size along the longitudinal direction of the frame 124.

[0079] Adding a Cavity 125 expands the gas diffusion space and extends the gas flow path. While increasing the capacity allows for a reduction in gas pressure, extending the path filters out easily ignitable impurities and lowers the temperature, thereby reducing the risk of detonation at high pressure and temperature.

[0080] In some embodiments, the arrangement chamber 120 includes a first chamber 121, and the battery core 11 is fitted with the first chamber 121. The frame 124 includes a first frame 1241 that surrounds the first chamber 121, and the cavity 125 includes a first cavity 1251 provided in the first frame 1241, the first cavity 1251 communicating with the exhaust chamber 122.

[0081] The first frame 1241 is a framework structure provided on the outer circumference of the battery core 11 and having a certain length. It is used to partition and limit the area from the holder 12 where the battery core 11 is placed, and can accommodate one or more battery cores 11.

[0082] In some embodiments, the number of first frames 1241 may be multiple, and multiple first frames 1241 may be successfully joined together, and the two first cavities 1251 of two adjacent first frames 1241 may be installed in communication or in isolation.

[0083] For example, any two adjacent first cavities 1251 may be installed in communication with each other, and the exhaust chamber 122 may be in communication with any one of the first cavities 1251, or it may be in communication with each of the multiple first cavities 1251. For example, any two adjacent first cavities 1251 may be installed in isolation, and the exhaust chamber 122 may be in communication with each of the multiple first cavities 1251.

[0084] The first chamber 121 refers to a compartment formed by being surrounded by the first frame 1241, which can accommodate one or more battery cores 11.

[0085] In some embodiments, the first chamber 121 may be shaped like a square, triangle, trapezoid, circle, or ellipse. For example, the first frame 1241 may be linear in shape and number four, and the four linear first frames 1241 may be successfully joined together to form a square or trapezoidal first chamber 121. Alternatively, the first frame 1241 may be linear in shape and number three, and the three linear first frames 1241 may be joined together to form a triangular first chamber 121.

[0086] The first cavity 1251 is an empty cavity formed by removing some of the material inside the housing of the first frame 1241, and has a certain extended size or volume, which can extend the flow path of the gas in the first frame 1241 or increase the diffusion volume of the gas in the first frame 1241. In some embodiments, the first cavity 1251 has the longest extended size along the longitudinal direction of the first frame 1241.

[0087] Based on the installation of the exhaust chamber 122, the addition of the first cavity 1251 expands the gas diffusion space and extends the gas flow path. While the increased capacity allows for a reduction in gas pressure, extending the path filters out easily ignitable impurities and lowers the temperature, thereby reducing the risk of detonation at high pressure and temperature.

[0088] In some embodiments, the configuration chamber 120 includes a first chamber 121 and a second chamber 123 spaced apart from each other. The frame 124 includes a first frame 1241 surrounding the first chamber 121 and a second frame 1242 surrounding the second chamber 123, and the cavity 125 includes a first cavity 1251 provided in the first frame 1241 and a second cavity 1252 provided in the second frame 1242. Here, the first cavity 1251 and the second cavity 1252 each communicate with the exhaust chamber 122.

[0089] In some other embodiments, the arrangement chamber 120 includes a first chamber 121 and a second chamber 123 spaced apart from each other. The frame 124 includes a first frame 1241 that surrounds the first chamber 121 and a second frame 1242 that surrounds the second chamber 123, and the cavity 125 includes a first cavity 1251 provided in the first frame 1241 and a second cavity 1252 provided in the second frame 1242, where the first cavity 1251 communicates with the second cavity 1252 and the exhaust chamber 122.

[0090] The second frame 1242 is a framework structure located outside the first frame 1241 and having a certain length. It is used to partition and demarcate another chamber independent of the first chamber 121 from the holder 12. In some embodiments, the other chamber may be a control chamber for the battery 10, which is used to house the control portion of the battery 10.

[0091] In some embodiments, the number of second frames 1242 may be multiple, and multiple second frames 1242 may be successfully joined together to form a closed, ring-shaped framework structure, and two second cavities 1252 of two adjacent second frames 1242 may be installed in communication, and any position of the first frame 1241 and any position of the second frame 1242 may be connected by a connecting frame 124 that connects the cavities 125, thereby allowing gas to pass from the first cavity 1251 to the second cavity 1252.

[0092] In some other embodiments, a plurality of second frames 1242 are joined together in sequence to form a ring-shaped framework structure, and the two furthest first frames 1241 are joined to each other, thereby allowing gas to pass from the first cavity 1251 to the second cavity 1252. Here, the two second cavities 1252 of the two adjacent second frames 1242 may be installed in communication or isolated from each other.

[0093] The second chamber 123 is a compartment formed by being surrounded by the second frame 1242, and the second frame 1242 may be formed by surrounding the second chamber 123 from all sides, or it may be formed by surrounding it from some sides and the first frame 1241 forming the second chamber 123.

[0094] In some embodiments, the second chamber 123 may be U-shaped. For example, the second frame 1242 may be linear in shape and number three, and the three linear second frames 1242 may be joined together in sequence to form a U-shaped second chamber 123, and the two furthest first frames 1241 may each be joined to the first frame 1241.

[0095] The second cavity 1252 is an empty cavity formed by removing some of the material inside the housing of the second frame 1242, and has a certain extended size or volume, which can extend the flow path of the gas in the second frame 1242 or increase the diffusion volume of the gas in the second frame 1242. In some embodiments, the second cavity 1252 has its longest extended size along the longitudinal direction of the second frame 1242.

[0096] Based on the installation of the exhaust chamber 122, the gas diffusion space can be further expanded and the gas flow path can be extended by adding the first cavity 1251 and the second cavity 1252. While the gas pressure can be reduced by increasing the capacity, the risk of detonation at high pressure and high temperature can be reduced by extending the path and filtering out easily ignitable impurities and lowering the temperature.

[0097] In some embodiments, a portion of the first frame 1241 and a portion of the second frame 1242 overlap to form a common portion between the first chamber 121 and the second chamber 123, with the first chamber 121 and the second chamber 123 each located on either side of the common portion.

[0098] Rather than connecting the first frame 1241 and the second frame 1242 with a connecting frame 124, it is advantageous to install some of the first frame 1241 or some of the second frame 1242 as a common part of the first chamber 121 and the second chamber 123 adjacent to each other, thereby enabling communication between the first cavity 1251 and the second cavity 1252.

[0099] In some embodiments, the second chamber 123 and the second cavity 1252 are installed in communication with each other.

[0100] The gas discharged from the valve body 112 flows through the exhaust chamber 122, the first cavity 1251, and the second cavity 1252, where the temperature and pressure of the gas are effectively reduced, and flammable impurities are effectively filtered out. The second chamber 123 can be used as a space to assist in expanding the volume.

[0101] Referring to Figures 10 and 11, in some embodiments, the second frame 1242 is provided with a placement hole 1242a, and the second chamber 123 and the second cavity 1252 are provided on either side of the placement hole 1242a, respectively. The holder 12 includes a bleed air mechanism 14 positioned in the placement hole 1242a. The bleed air mechanism 14 is provided with an air gap hole, which communicates with the second chamber 123 and the second cavity 1252, or the bleed air mechanism 14 and the placement hole 1242a are gap-fitted.

[0102] The placement hole 1242a is a hole structure that allows communication between the second chamber 123 and the second cavity 1252, and may be installed on the common side wall of the second chamber 123 and the second cavity 1252.

[0103] The bleed air mechanism 14 is a mechanism positioned in the positioning hole 1242a, which allows gas to enter the second chamber 123 by fitting with the positioning hole 1242a, or by an air gap hole provided within itself. For example, the bleed air mechanism 14 may be a snap-fit ​​type mechanism that can be attached to the positioning hole 1242a by locking.

[0104] An air gap hole is a hole structure that has a relatively small radial size and can allow a small amount of gas to pass through. The bleed air mechanism 14 may be provided with one or more air gap holes. The air gap holes may have a regular hole structure or an irregular hole structure.

[0105] A gap fit is a fitting between two structures that can fix the relative positions of the two members, and the gap fit allows a small amount of gas to enter the second chamber 123 from the second cavity 1252.

[0106] The second chamber 123 and the second cavity 1252 are kept in communication by an air gap hole or gap fitting, allowing a small amount of gas to enter the second chamber 123, which can accommodate a small amount of gas as an auxiliary volume-expanding space.

[0107] In some other embodiments, the second frame 1242 is provided with a placement hole 1242a, and the second chamber 123 and the second cavity 1252 are provided on either side of the placement hole 1242a, respectively. The holder 12 includes a heat-sealing mechanism positioned in the placement hole 1242a, which is configured to completely isolate the second chamber 123 and the second cavity 1252 and to communicate with the second chamber 123 and the second cavity 1252 in a state in which at least a portion is heat-sealed.

[0108] A thermal welding mechanism is a mechanism in which the form of a material is changed or sintered under the action of a high-temperature substance. The thermal welding mechanism may be made from a plastic material with a relatively low melting point, and includes, but is not limited to, plastics, rubber, and resins.

[0109] When battery 10 experiences thermal runaway, the high-temperature, high-pressure gas reaches the second cavity 1252, and the gas comes into contact with the thermal welding mechanism. Because the melting point of the thermal welding mechanism is lower than the temperature of the gas, the thermal welding mechanism is thermally welded by the gas, and at least a portion of the placement hole 1242a that is sealed by the thermal welding mechanism is opened, and the second cavity 1252 and the second chamber 123 become electrically connected. Here, the thermal welding mechanism may be completely or partially melted, as long as the gas can reach the second chamber 123 after coming into contact with the thermal welding mechanism.

[0110] After the heat-sealing mechanism is heat-sealed by the gas discharged from the valve body 112, the second chamber 123 and the second cavity 1252 are connected, and the second chamber 123 can be used as a space to assist in expanding the capacity.

[0111] In some further embodiments, the second cavity 1252 and the second chamber 123 can be connected by a plurality of small holes, allowing a small amount of gas to enter the second chamber 123 at a relatively slow rate, while preventing a large amount of gas from entering the second chamber 123 at a relatively fast rate and adversely affecting the function of the components in the second chamber 123.

[0112] In some other embodiments, if the exhaust chamber 122, the first cavity 1251, and the second cavity 1252 sufficiently diffuse the gas, and the second chamber 123 does not need to be used as a space to assist in expanding the volume, then the second chamber 123 and the second cavity 1252 are installed in isolation.

[0113] In some embodiments, if the first cavity 1251 and the second cavity 1252 are not added, the battery 10 includes a pressure sensing element 13 provided in the exhaust chamber 122.

[0114] The pressure detection element 13 detects the pressure or temperature after the gas arrives in the exhaust chamber 122, and if the obtained value exceeds a set threshold, it triggers an alarm to provide other explosion-proof measures.

[0115] In some embodiments, when the first cavity 1251 is added separately, the battery 10 includes a pressure sensing element 13 provided in the first cavity 1251.

[0116] The pressure detection element 13 is a device for measuring gas pressure, which can be expressed as pressure or temperature. Generally, the pressure detection element 13 includes a sensor unit and a detection unit, the sensor unit being electrically connected to the detection unit to transmit a detection signal. The detection unit is used to measure the gas pressure by contacting the gas, and the sensor unit is used to transmit the detection signal obtained by the detection unit to an electrical component or module in the second chamber 123, for example, to a control unit. The control unit determines whether this detection signal conforms to a set threshold, and if it does not conform to the set threshold, the control unit controls the alarm mechanism to sound an alarm.

[0117] The pressure sensing element 13 detects the pressure or temperature after the gas arrives in the first cavity 1251, and if the obtained value exceeds a set threshold, it triggers an alarm to provide other explosion-proof measures.

[0118] In some other embodiments, the pressure sensing element 13 may be installed in the exhaust chamber 122, and the first cavity 1251 may be used as a space to assist in expanding the volume.

[0119] The exhaust chamber 122 is a relatively flat space and has a relatively small size along the height direction of the battery core 11. The first cavity 1251 is more advantageous for the installation of the pressure sensing element 13 than the exhaust chamber 122. Furthermore, since the first cavity 1251 is the furthest region that the gas can reach, obtaining the gas pressure or temperature in the first cavity 1251 by the pressure sensing element 13 is advantageous in determining whether there is a risk of the gas eventually detonating.

[0120] Of course, pressure detection elements 13 may be installed in the exhaust chamber 122 and the first cavity 1251, respectively, and the trend of changes in gas pressure and temperature may be obtained based on the pressure detection elements 13 located at different positions along the gas flow path.

[0121] In some embodiments, when a first cavity 1251 and a second cavity 1252 are added, and the second cavity 1252 and the second chamber 123 are installed in isolation, the battery 10 includes a pressure sensing element 13 provided in the second cavity 1252.

[0122] The pressure sensing element 13 detects the pressure or temperature after the gas arrives in the second cavity 1252, and if the obtained value exceeds a set threshold, it triggers an alarm, providing additional explosion-proof measures.

[0123] In some other embodiments, the pressure sensing element 13 may be installed in the first cavity 1251, and the second cavity 1252 may be used as a space to assist in expanding the volume.

[0124] Since the second cavity 1252 is the furthest region the gas can reach, it is advantageous to determine whether there is a risk of the gas eventually detonating rather than having it located in the first cavity 1251 and obtaining the pressure or temperature of the gas in the second cavity 1252 by the pressure sensing element 13.

[0125] In some further embodiments, the pressure sensing element 13 may be installed in the exhaust chamber 122, and the first cavity 1251 and the second cavity 1252 may be used as spaces to assist in expanding the volume.

[0126] The exhaust chamber 122 is a relatively flat space and has a relatively small size along the height direction of the battery core 11. The second cavity 1252 is more advantageous for the installation of the pressure sensing element 13 than the exhaust chamber 122. Furthermore, since the second cavity 1252 is the furthest region that the gas can reach, obtaining the gas pressure or temperature in the second cavity 1252 by the pressure sensing element 13 is advantageous in determining whether there is a risk of the gas eventually detonating.

[0127] Of course, pressure detection elements 13 may be installed in the exhaust chamber 122, the first cavity 1251, and the second cavity 1252, respectively, and the trend of changes in gas pressure and temperature may be obtained based on the pressure detection elements 13 located at different positions along the gas flow path.

[0128] In some embodiments, when a first cavity 1251 and a second cavity 1252 are added, and the second cavity 1252 and the second chamber 123 are in communication or can be in communication, the battery 10 includes a pressure sensing element 13 provided in the second chamber 123.

[0129] For example, in the above embodiment in which a triggering mechanism or a small hole is provided, the pressure detection element 13 may be provided in the second chamber 123. For example, in the above embodiment in which a heat welding mechanism is provided, the second cavity 1252 and the second chamber 123 are normally isolated and communicate when the battery core 11 experiences thermal runaway, and the pressure detection element 13 may be provided in the second chamber 123.

[0130] The pressure detection element 13 detects the pressure or temperature after the gas arrives in the second chamber 123, and if the obtained value exceeds a set threshold, it triggers an alarm to provide other explosion-proof measures.

[0131] In some other embodiments, the pressure sensing element 13 may be provided in at least one of the second cavity 1252, the first cavity 1251, and the exhaust chamber 122.

[0132] Since the second chamber 123 is the furthest region the gas can reach, obtaining the gas pressure or temperature in the second chamber 123 by the pressure sensing element 13 is advantageous in determining whether the gas is at risk of eventually detonating, compared to the second cavity 1252, the first cavity 1251, or the exhaust chamber 122. Furthermore, the exhaust chamber 122 is a relatively flat space and has a relatively small size along the height direction of the battery core 11. The second cavity 1252 is more advantageous for installing the pressure sensing element 13 than the exhaust chamber 122.

[0133] Of course, pressure detection elements 13 may be installed in the exhaust chamber 122, the first cavity 1251, the second cavity 1252, and the second chamber 123, respectively, and the trend of changes in gas pressure and temperature may be obtained based on the pressure detection elements 13 located at different positions along the gas flow path.

[0134] In some embodiments, when a first cavity 1251 and a second cavity 1252 are added, the second cavity 1252 and the second chamber 123 are isolated or in communication, and the battery 10 includes a pressure sensing element 13, the pressure sensing element 13 includes a sensor part and a detection part connected to the sensor part, the sensor part is provided in the second chamber 123 and the detection part is provided in the second cavity 1252.

[0135] The sensor unit refers to a part of the pressure detection element 13. By connecting the detection unit and the control unit of the battery 10 via the sensor unit, data detected by the detection unit can be transmitted to the control unit.

[0136] The detection unit refers to another part of the pressure detection element 13, is connected to the sensor unit, and can detect the pressure or temperature of gases in the environment and transmit it to the control unit via the sensor unit. For example, it may be a probe or a probe structure.

[0137] The pressure detection element 13 is equipped to detect the pressure or temperature of the gas arriving at the second cavity 1252, and to trigger an alarm when the obtained value exceeds a set threshold, thereby providing other explosion-proof measures.

[0138] For example, in the above embodiment in which a lifting mechanism or a small hole is provided, the second cavity 1252 and the second chamber 123 are in communication, the sensor part may be provided in the second chamber 123, and the detection part may be provided in the second cavity 1252.

[0139] For example, in the above embodiment in which a heat welding mechanism is provided, the second cavity 1252 and the second chamber 123 are normally isolated and communicate when the battery core 11 experiences thermal runaway, the sensor unit may be provided in the second chamber 123, and the detection unit may be provided in the second cavity 1252.

[0140] In some embodiments, the cavity 125 is provided with a plurality of flow guide structures 1253 that are sequentially installed along the extending direction of the cavity 125, and the plurality of flow guide structures 1253 are configured to allow the gas discharged from the valve body 112 to flow sequentially through the plurality of flow guide structures 1253 along the extending direction.

[0141] The flow guide structure 1253 is a structure provided on the gas flow path that does not obstruct the normal passage of gas, and each flow guide structure 1253 can deflect the gas just before it flows through it.

[0142] The role of the flow guide structure 1253 is as follows: Firstly, it can extend the flow path, allowing the gas to diffuse along the flow path and reducing the gas pressure as it diffuses. Secondly, it can increase the contact area and contact time between the gas and the entity structure, further lowering the gas temperature. Thirdly, the flow guide structure 1253 can block some easily ignitable impurities, and the combined action of multiple flow guide structures 1253 can effectively filter out easily ignitable impurities.

[0143] The multiple flow guide structures 1253 sequentially filter out easily ignitable impurities in the gas, sequentially reduce the gas temperature, and improve the pressure-reducing and temperature-reducing effects of the first cavity 1251 on the gas.

[0144] In some embodiments, some cavity walls of the cavity 125 protrude toward the center of the cavity 125 relative to other cavity walls, forming a flow guide structure 1253.

[0145] By utilizing a portion of the cavity wall of the cavity 125 to form a flow guide structure 1253, the structure of the frame in which the cavity 125 is located is simplified, the structure of the holder 12 is simplified, and manufacturing costs are reduced.

[0146] In some other embodiments, different flow guide structures 1253 are provided at different circumferential positions of the cavity 125, and the direction of extension of the cavity 125 is perpendicular to the circumferential direction.

[0147] Multiple flow guide structures 1253 are sequentially installed along the extending direction of the cavity 125, and different flow guide structures 1253 are provided at different circumferential positions. Different flow guide structures 1253 filter and cool the gas from different circumferential positions, that is, they act on the gas from all circumferential directions, further improving the pressure-reducing and temperature-reducing effect on the gas.

[0148] In some embodiments, the direction of extension of the cavity 125 is the longitudinal direction of the cavity 125, i.e., the first direction in Figures 4 and 8. Multiple flow guide structures 1253 can be installed sequentially along the longitudinal direction of the cavity 125, or multiple flow guide structures 1253 may be installed along the second or third direction of the cavity 125, with two of each of the longitudinal direction, second direction and third direction of the cavity 125 being installed perpendicularly.

[0149] The multiple flow guide structures 1253 may be arranged along at least one of the first, second, and third directions, and the arrangement direction of the multiple flow guide structures 1253 can be flexibly set based on the cross-sectional structure of the holder 12, thereby not being affected by the specific structure of the holder 12, while the multiple flow guide structures 1253 can be arranged in multiple directions to improve the cooling and pressure reduction effect on the gas.

[0150] In some embodiments, when the cross-sectional area of ​​the cavity 125 is relatively small, the direction of extension of the cavity 125 is selected as the first direction, i.e., the longitudinal direction of the cavity 125, that is, the multiple flow guide structures 1253 are installed sequentially along the longitudinal direction.

[0151] In some other embodiments, when the cross-sectional area of ​​the cavity 125 is relatively large, multiple flow guide structures 1253 are installed in the cavity 125 along a first direction, multiple flow guide structures 1253 are also installed in the cavity 125 along a second direction, and multiple flow guide structures 1253 are also installed in the cavity 125 along a third direction.

[0152] It should be explained that whether the flow guide structure 1253 can be installed along the second and third directions in the cavity 125 depends on the cross-sectional shape of the frame 124. For example, if the cross-sectional shape of the frame 124 is approximately L-shaped or T-shaped, multiple flow guide structures 1253 may be installed in each of the first, second, and third directions. For example, if the cross-sectional shape of the frame 124 is approximately I-shaped, multiple flow guide structures 1253 may be installed in each of the first and second directions.

[0153] For example, as shown in Figures 4 and 5, the cross-sectional shape of the frame 124 is approximately an inverted T shape, and the cavity 125 has a size that extends in a first direction, a second direction, and a third direction. Here, if the size extending along the first direction is much larger than the sizes extending along the second and third directions, the number of flow guide structures 1253 that can be installed in the first direction is far greater than the number of flow guide structures 1253 that can be installed in the second and third directions.

[0154] In some embodiments, the battery 10 includes a pressure sensing element 13, and a flow guide space is formed between two adjacent flow guide structures 1253, with the pressure sensing element 13 located in the first or subsequent flow guide space counting from the side where the exhaust chamber 122 is located.

[0155] The gas flows through the first flow guide structure 1253, counting from the side where the exhaust chamber 122 is located, and then enters the space between the first and second flow guide structures 1253, i.e., the first flow space. After the gas has been depressurized and cooled by at least one flow guide structure 1253, the gas is detected, achieving the purpose of installing the flow guide structure 1253.

[0156] In some embodiments, when the first cavity 1251 is added individually, the multiple flow guide structures 1253 described above may be installed in the first cavity 1251. In the first cavity 1251, the pressure sensing element 13 is provided in the first or subsequent flow guide space counting from the side where the exhaust chamber 122 is located.

[0157] In some embodiments, when a first cavity 1251 and a second cavity 1252 are added, the plurality of flow guide structures 1253 are installed in at least one of the first cavity 1251 and the second cavity 1252. For example, the plurality of flow guide structures 1253 are provided in both the first cavity 1251 and the second cavity 1252, and a pressure detection element 13 is provided in the second cavity 1252. In the second cavity 1252, the pressure detection element 13 is provided in the first or subsequent flow guide space counting from the side where the first cavity 1251 is located. Here, for the second cavity 1252, the side where the first cavity 1251 is located is the side where the exhaust chamber 122 is located.

[0158] In some embodiments, the cavity 125 includes a plurality of branch cavities 1254 that are sequentially installed along the direction perpendicular to the extending direction of the cavity 125, and any two adjacent branch cavities 1254 are in communication with each other.

[0159] For example, any two adjacent branch cavities 1254 are connected by a via hole located on a common side wall.

[0160] A branch cavity 1254 refers to an empty cavity that is part of the first cavity 1251. Adjacent branch cavities 1254 are separated by a common side wall, two adjacent branch cavities 1254 communicate with each other, and multiple branch cavities 1254 communicate to form an assembly of cavity 125.

[0161] The multiple branched cavities 1254 sequentially filter out easily ignitable impurities from the gas, sequentially reduce the gas temperature, and improve the pressure-reducing and temperature-reducing effects of the first cavity 1251 on the gas.

[0162] In some embodiments, the extending direction of the cavity 125 is the longitudinal direction of the cavity 125, i.e., the first direction in Figures 4 and 8. Multiple branch cavities 1254 may be installed sequentially along the second direction, or multiple branch cavities 1254 may be installed sequentially along the third direction. Here, the longitudinal direction of the cavity 125, the second direction and the third direction are perpendicular to each other in pairs.

[0163] The multiple branch cavities 1254 may be arranged along at least one of the second and third directions, allowing for flexible arrangement of the multiple branch cavities 1254 according to the cross-sectional shape of the frame 124. This ensures that the arrangement of the multiple branch cavities 1254 is not affected by the specific shape of the frame 124, while simultaneously allowing for the arrangement of multiple branch cavities 1254 in multiple directions to improve the cooling and pressure reduction effect on the gas.

[0164] It should be explained that whether the cavity 125 can be divided into multiple branch cavities 1254 along a second and a third direction depends on the cross-sectional shape of the frame 124. For example, if the cross-sectional shape of the frame 124 is approximately L-shaped or T-shaped, the cavity 125 can be divided in each of the second and third directions to form multiple branch cavities 1254. For example, if the cross-sectional shape of the frame 124 is approximately I-shaped, the cavity 125 can be divided in the second direction to form multiple branch cavities 1254.

[0165] For example, as shown in Figures 4 and 5, if the cross-sectional shape of the frame 124 is substantially inverted T-shaped and the cavity 125 has a size that extends in both a second and a third direction, the cavity 125 may be partitioned in the second direction to form multiple branched cavities 1254, or the cavity 125 may be partitioned in the third direction to form multiple branched cavities 1254.

[0166] In some embodiments, when the first cavity 1251 is added individually, the first cavity 1251 may be partitioned in at least one of the second and third directions to form a plurality of branch cavities 1254, and each branch cavity 1254 may have a plurality of flow guide structures 1253 installed along its longitudinal direction. A pressure detection element 13 may be installed in any one of the branch cavities 1254, and the pressure detection element 13 is provided in the first or subsequent flow guide space counting from the side where the exhaust chamber 122 is located.

[0167] In some embodiments, when adding a first cavity 1251 and a second cavity 1252, at least one of the first cavity 1251 and the second cavity 1252 may be partitioned in at least one direction to form a plurality of branched cavities 1254.

[0168] For example, in the first cavity 1251, the first cavity 1251 has a second direction and a third direction perpendicular to its longitudinal direction, and the first cavity 1251 is partitioned in the second direction and the third direction, forming a plurality of branch cavities 1254. Furthermore, each branch cavity 1254 in the first cavity 1251 may have a plurality of flow guide structures 1253 installed along its longitudinal direction. A pressure detection element 13 may be installed in any one of the branch cavities 1254 of the first cavity 1251, and the pressure detection element 13 is provided in the first or subsequent flow guide spaces counting from the side where the exhaust chamber 122 is located.

[0169] For example, in the second cavity 1252, the second cavity 1252 has a second direction and a third direction perpendicular to its longitudinal direction, and the second cavity 1252 is partitioned in the second direction and the third direction, forming a plurality of branch cavities 1254. Furthermore, each branch cavity 1254 in the second cavity 1252 may have a plurality of flow guide structures 1253 installed along its longitudinal direction. A pressure detection element 13 may be installed in any one of the branch cavities 1254 of the second cavity 1252, and the pressure detection element 13 is provided in the first or subsequent flow guide space counting from the side where the first cavity 1251 is located.

[0170] If both the first cavity 1251 and the second cavity 1252 are divided into multiple branch cavities 1254, then at least one branch cavity 1254 of the first cavity 1251 needs to be connected to at least one branch cavity 1254 of the second cavity 1252.

[0171] In some embodiments, the frame 124 includes four first frames 1241 and three second frames 1242, both of which are linear in shape. The four linear first frames 1241 are successfully joined together to form a rectangular first chamber 121. The three linear second frames 1242 are joined together sequentially to form a U-shaped first chamber 121. The two furthest second frames 1242 are connected to the ends of the same first frame 1241, which forms a common portion between the first chamber 121 and the second chamber 123. Each first cavity 1251 and each second cavity 1252 are each divided into a plurality of branch cavities 1254, each branch cavity 1254 is provided with a plurality of flow guide structures 1253. The second cavity 1252 and the second chamber 123 are connected by a lifting mechanism, or are normally separated by a heat-welding mechanism and electrically connected in a heat-welded state, and a pressure sensing element 13 is provided in the second chamber 123.

[0172] Another object of the embodiments of this application is to provide a power consumption device 100 including the battery 10.

[0173] The power consumption device 100 according to this proposed technology employs the battery 10 according to the above proposed technology, wherein the electrical connection side of the battery core 11 and the exhaust side of the battery core 11 are separated by the battery core 11 itself, and the insulating installation of the electrical connection side is not affected by the gas discharged from the valve body 112, thereby reducing or eliminating the risk of the battery core 11 detonating, and reducing or eliminating the safety risk of the power consumption device 100.

[0174] The foregoing describes preferred embodiments of this application and is not intended to limit it. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should all be included within the scope of protection. [Explanation of Symbols]

[0175] 10 batteries 100 Power consumption equipment 101 Controller 102 Motor 11 Battery core 12 holders 13. Barometric pressure sensing element 14. Bleed air mechanism 15 Upper chassis 111 Electrode 112 Valve body 1111 Positive electrode 1112 Negative electrode 113 Housing 120 Placement room 121 The First Chamber 122 Exhaust chamber 123 The second room 124 frames 125 Cavity 126 Under Support 127 Underguard 128 Partitioned Spaces 129 Insulating material 1241 First Frame 1242 Second Frame 1242a Placement hole 1251 First Cavity 1252 Second Cavity 1253 Direction structure 1254 Branch Cavity 1261 Exhaust holes

Claims

1. It is a battery, The battery includes a battery core and a holder, the holder being provided with a placement chamber and an exhaust chamber. The battery is characterized in that the battery core is provided in the arrangement chamber, the battery core includes a housing, electrodes, and a valve body, the valve body is provided on the side of the housing facing the exhaust chamber and communicates with the exhaust chamber in a conductive state, and the electrodes are provided on the side of the housing facing away from the valve body.

2. The battery according to claim 1, wherein the holder includes a frame that surrounds the arrangement chamber, and at least a portion of the frame is provided with a cavity that communicates with the exhaust chamber.

3. The arrangement chamber includes a first chamber and a second chamber installed at intervals from each other, the frame includes a first frame forming around the first chamber and a second frame forming around the second chamber, and the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame. The battery according to claim 2, characterized in that the first cavity and the second cavity each communicate with the exhaust chamber.

4. The arrangement chamber includes a first chamber and a second chamber installed at intervals from each other, the frame includes a first frame forming around the first chamber and a second frame forming around the second chamber, and the cavity includes a first cavity provided in the first frame and a second cavity provided in the second frame. The battery according to claim 2, characterized in that the first cavity communicates with the exhaust chamber and the second cavity.

5. The battery according to claim 3 or 4, characterized in that a portion of the first frame and a portion of the second frame overlap to form a common portion between the first chamber and the second chamber, and the first chamber and the second chamber are each provided on both sides of the common portion.

6. The battery according to claim 3 or 4, characterized in that the second chamber and the second cavity are installed in communication with each other.

7. The second frame is provided with a mounting hole, the second chamber and the second cavity are provided on both sides of the mounting hole, and the holder includes a bleed air mechanism positioned in the mounting hole. The battery according to claim 6, characterized in that the bleed air mechanism is provided with an air gap hole communicating with the second chamber and the second cavity, or the bleed air mechanism is fitted into the hole wall of the arrangement hole.

8. The second frame is provided with a mounting hole, and the second chamber and the second cavity are provided on both sides of the mounting hole, The battery according to claim 3 or 4, wherein the holder includes a heat-sealing mechanism disposed in the arrangement hole, the heat-sealing mechanism is configured to completely isolate the second chamber and the second cavity and to communicate with the second chamber and the second cavity in a state in which at least a portion is heat-sealed.

9. The battery according to any one of claims 2 to 4, characterized in that the battery includes a pressure sensing element provided in the cavity.

10. The battery according to claim 3 or 4, wherein the battery includes a pressure sensing element, the second chamber and the second cavity are installed in isolation, and the pressure sensing element is provided in the second cavity.

11. The battery according to claim 3 or 4, wherein the battery includes a pressure detection element comprising a sensor portion and a detection portion connected to the sensor portion, the sensor portion being provided in the second chamber, and the detection portion being provided in the second cavity.

12. The battery according to claim 6, characterized in that the battery includes a pressure sensing element provided in the second chamber.

13. The battery according to any one of claims 2 to 4, wherein the cavity is provided with a plurality of flow guide structures that are sequentially installed along the extending direction of the cavity, and the plurality of flow guide structures are configured to allow the gas discharged from the valve body to flow sequentially through the plurality of flow guide structures along the extending 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, thereby forming the flow guide structure.

15. The different flow guide structures are provided at different circumferential positions of the cavity, The battery according to claim 14, characterized in that the direction of extension of the cavity is perpendicular to the circumferential direction.

16. The battery according to claim 13, wherein the battery includes a pressure sensing element, a flow guide space is formed between two adjacent flow guide structures, and the pressure sensing element is provided in the flow guide space.

17. The battery according to claim 13, wherein the cavity includes a plurality of branch cavities sequentially installed along a direction perpendicular to the extending direction of the cavity, and any two adjacent branch cavities are in communication with each other.

18. A power consumption device characterized by including a battery according to any one of claims 1 to 4.

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