Battery housing, battery, power consumption device, battery manufacturing method and apparatus

Abstract

The embodiments of the present application provide a battery housing, a battery, a power consumption device, and a manufacturing method and device for a battery. The housing includes an electrical cavity for accommodating a battery cell, a pressure relief mechanism is installed on a first wall of the battery cell, the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value, a collection cavity is used to collect discharge from the battery cell when the pressure relief mechanism is activated and is isolated from the electrical cavity, and a first thermal management member is used to accommodate a fluid to regulate the temperature of the battery cell, the first thermal management member is attached to a second wall of the battery cell different from the first wall. The technical solution of the embodiments of the present application can improve the safety of the battery.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to battery casings, batteries, power-consuming devices, battery manufacturing methods and devices.

Background Art

[0002] Energy conservation and emission reduction are important points for the sustainable development of the automotive industry. In this case, electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental friendliness. For electric vehicles, battery technology is an important element in their development.

[0003] In the development of battery technology, in addition to improving the performance of batteries, safety issues are also problems that cannot be ignored. If the safety of a battery cannot be ensured, the battery cannot be used. Therefore, how to improve the safety of batteries is a technical problem to be solved in battery technology.

Summary of the Invention

[0004] This application provides a battery casing, a battery, a power consumption Device , a battery manufacturing method and device, and can improve the safety of the battery.

[0005] In a first aspect, a battery casing is provided, which is an electrical cavity for accommodating battery cells, wherein a pressure relief mechanism is installed on a first wall of the battery cell, and the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value. The electrical cavity, a collection cavity for collecting emissions from the battery cell when the pressure relief mechanism operates, and a first thermal management member that is used to perform temperature regulation on the battery cell by containing a fluid and is mounted on a second wall different from the first wall of the battery cell.

[0006] The technical solution of the embodiment of the present application is to attach the first heat management member to the second wall where the pressure relief mechanism of the battery cell is not installed. In this way, the contact area between the first heat management member and the battery cell is large, and when the battery cell operates normally, the temperature adjustment effect on the battery cell is remarkable. Further, since the second wall to which the first heat management member is attached is not the first wall where the pressure relief mechanism of the battery cell is installed, in this way, when a thermal runaway occurs in the battery cell, the discharge of the battery cell discharged through the pressure relief mechanism is discharged in a direction away from the first heat management member. Therefore, the discharge does not break the first heat management member, reduces the risk, and improves the safety of the battery.

[0007] In some embodiments, an electrode terminal is installed on the third wall of the battery cell, and the third wall is different from the first wall and is also different from the second wall.

[0008] The wall where the pressure relief mechanism is located, the wall where the electrode terminal is located, and the wall to which the first heat management member is attached are three different walls of the battery cell. In this way, when the pressure relief mechanism operates, the discharge of the battery cell discharged through the pressure relief mechanism is discharged in a direction away from the first heat management member and the electrode terminal. Therefore, the discharge does not break the first heat management member. At the same time, the influence of the discharge on the electrode terminal can be reduced, the ignition risk due to high voltage can be avoided, the risk can be reduced, and thereby the safety of the battery can be improved.

[0009] In some embodiments, the electrode terminal is installed in the first region of the third wall, the housing is used to perform temperature adjustment on the battery cell by containing a fluid, and further includes a second heat management member attached to a second region different from the first region of the third wall.

[0010] The second heat management member may be further mounted and installed in an area where the electrode terminal of the third wall is not installed. In this way, the contact area between the heat management member and the battery cell is further increased. When the battery cell operates normally, the temperature adjustment effect on the battery cell is more significant. In addition, since the third wall on which the second heat management member is mounted is not the first wall where the pressure release mechanism of the battery cell is installed, in this way, when a thermal runaway occurs in the battery cell, the exhaust of the battery cell discharged through the pressure release mechanism is discharged in a direction away from the second heat management member and the electrode terminal. Therefore, the exhaust does not break the second heat management member, and at the same time, the influence of the exhaust on the electrode terminal can be reduced, the ignition risk due to high voltage can be avoided, the risk can be reduced, and thereby the safety of the battery can be enhanced.

[0011] In some embodiments, a protruding portion protruding in a direction away from the inside of the battery cell is installed in the second region, and the second heat management member is mounted on the protruding portion.

[0012] By installing a protruding portion protruding in a direction away from the inside of the battery cell in the second region and mounting the second heat management member on the protruding portion, it is possible to further facilitate the mounting of the second heat management member on the battery cell.

[0013] In some embodiments, the third wall and the first wall are installed opposite to each other, and the second wall connects the third wall and the first wall.

[0014] An electrode terminal is installed on one of the two opposite walls of the battery cell, and a pressure release mechanism is installed on the other wall. In this way, when the pressure release mechanism operates, the exhaust of the battery cell discharged through the pressure release mechanism is discharged in a direction away from the electrode terminal. Therefore, the influence of the exhaust on the electrode terminal can be further reduced, the ignition risk due to high voltage can be avoided, the risk can be reduced, and thereby the safety of the battery can be enhanced.

[0015] In some embodiments, the second wall and the first wall are installed opposite to each other, and the third wall connects the second wall and the first wall.

[0016] In some embodiments, an electrode terminal is installed on the second wall.

[0017] In some embodiments, the housing includes a separating member that is used to separate the electrical cavity and the collection cavity and is attached to the first wall.

[0018] The separating member is used to separate the electrical cavity for accommodating the battery cell from the collection cavity for collecting the discharge. When the pressure relief mechanism operates, the discharge of the battery cell enters the collection cavity and does not enter the electrical cavity, or enters the electrical cavity in a small amount, thereby not affecting the electrical connection in the electrical cavity. Therefore, the safety of the battery can be improved.

[0019] In some embodiments, a weak area is provided in the separating member. The weak area is used to be broken when the pressure relief mechanism operates, so that the discharge passes through the weak area and enters the collection cavity.

[0020] By providing a weak area in the separating member, on the one hand, when the pressure relief mechanism operates, the discharge can pass through the weak area and enter the collection cavity, avoiding the discharge from entering the electrical cavity. On the other hand, when the pressure relief mechanism does not operate, the isolation between the electrical cavity and the collection cavity can be ensured, avoiding the substances in the collection cavity from entering the electrical cavity.

[0021] In some embodiments, the weak area and the pressure relief mechanism are arranged opposite to each other. In this way, when the pressure relief mechanism operates, the discharge can directly impact the weak area and open the weak area.

[0022] In some embodiments, a through hole is provided in the separating member. The through hole is used for the discharge to pass through the through hole and enter the collection cavity when the pressure relief mechanism operates.

[0023] In some embodiments, the through hole is arranged opposite to the pressure relief mechanism.

[0024] In a second aspect, a battery is provided, including a plurality of battery cells, wherein a pressure relief mechanism is installed on a first wall of the battery cell, and the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value; and a housing according to any one of the first aspects, wherein the plurality of battery cells are accommodated in the housing.

[0025] In a third aspect, a power consumption device is provided, including the battery according to the second aspect, and the battery is used to provide electrical energy to the power consumption device.

[0026] In a fourth aspect, a method for manufacturing a battery is provided, including the steps of: providing a plurality of battery cells, wherein a pressure relief mechanism is installed on a first wall of the battery cell, and the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value; providing a housing including an electrical cavity, a collection cavity, and a first heat management member; and accommodating the plurality of battery cells in the electrical cavity, wherein the collection cavity is used to collect emissions from the battery cell when the pressure relief mechanism operates, the first heat management member is used to perform temperature adjustment on the battery cell by accommodating a fluid, the first heat management member is mounted on a second wall of the battery cell, and the second wall is different from the first wall.

[0027] In a fifth aspect, there is provided a battery manufacturing apparatus, which includes providing a plurality of battery cells, wherein a pressure relief mechanism is installed on a first wall of the battery cell, and the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value; providing a housing including an electrical cavity, a collection cavity and a first heat management member; a providing module used for the above; and a mounting module used for accommodating the plurality of battery cells in the electrical cavity. The collection cavity is used for collecting the discharge from the battery cell when the pressure relief mechanism operates. The first heat management member is used for performing temperature adjustment on the battery cell by containing a fluid. The first heat management member is mounted on a second wall of the battery cell, and the second wall is different from the first wall.

Brief Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative labor.

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Embodiments for Carrying Out the Invention

[0029] Hereinafter, the embodiments of the present application will be described in more detail with reference to the drawings and examples. The following detailed description of the examples and the drawings are for exemplarily explaining the principle of the present application, but not for limiting the scope of the present application. That is, the present application is not limited to the described embodiments.

[0030] In the description of this application, unless otherwise specified, the meaning of "a plurality" is two or more. The orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", and "outer" does not indicate or imply that the device or element must have a specific orientation and be structured and operated in a specific orientation. These terms are used to facilitate the description and simplify the explanation of this application, and therefore should not be understood as limiting this application. Also, terms such as "first", "second", and "third" are used only for the purpose of description and should not be understood as indicating or implying relative importance. "Vertical" is not vertical in the strict sense and is within the allowable error range. "Parallel" is not parallel in the strict sense and is within the allowable error range.

[0031] All the directional terms described in the following description are in the directions shown in the drawings and are not for limiting the specific structure of this application. In the description of this application, unless otherwise clearly defined and limited, the terms "attach", "connect", "join", and "mount" should have a broad meaning. For example, they may be fixedly connected, removably connected, or integrally connected. They may be directly connected or indirectly connected through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific situation.

[0032] The term "and / or" in this application is merely a relationship for explaining the related object and indicates that there are three relationships. For example, A and / or B can indicate three situations: A exists alone, A and B exist simultaneously, and B exists alone. Also, the character " / " in this application generally indicates that the related objects before and after are in an "or" relationship.

[0033] "A plurality" as described in this application refers to two or more (including two), similarly, "a plurality of groups" refers to two groups or more (including two groups), and "a plurality of sheets" refers to two sheets or more (including two sheets).

[0034] In the present application, 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, a magnesium-ion battery, etc., and the embodiments of the present application do not limit this. The battery cell may be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments of the present application do not limit this either. The battery cell is generally divided into three types: a cylindrical battery cell, a prismatic battery cell, and a soft-pack battery cell according to the packaging method, and the embodiments of the present application do not limit this either.

[0035] The battery described in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide a higher voltage and capacity. For example, the battery described in the present application may include a battery module, a battery pack, etc. The battery generally includes a housing for packaging one or more battery cells. The housing can prevent liquid or other foreign substances from affecting the charging or discharging of the battery cell.

[0036] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode plate, a negative electrode plate, and a separator. The battery cell mainly operates by the movement of metal ions between the positive electrode plate and the negative electrode plate. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The current collector without the positive electrode active material layer protrudes from the current collector with the positive electrode active material layer coated, and the current collector without the positive electrode active material layer is used as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, or the like. The negative electrode plate includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The current collector without the negative electrode active material layer protrudes from the current collector with the negative electrode active material layer coated, and the current collector without the negative electrode active material layer is used as the negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. To ensure that it does not blow out even when a large current flows, there are a plurality of positive electrode tabs and they are integrally laminated, and there are a plurality of negative electrode tabs and they are integrally laminated. The material of the separator may be PP, PE, or the like. Also, the electrode assembly may have a wound structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0037] The development of battery technology requires considering various design elements, such as performance parameters like energy density, cycle life, discharge capacity, charge and discharge rate, etc., and also requires considering the safety of the battery.

[0038] For a battery cell, the main safety hazards come from the charging and discharging processes. At the same time, the design of an appropriate environmental temperature is important. Generally, there are at least three protection measures for the battery cell to effectively avoid unnecessary losses. Specifically, the protection measures generally include at least a switching element, the selection of an appropriate separator material, and a pressure relief mechanism. The switching element refers to an element that can stop the charging or discharging of the battery when the temperature or resistance inside the battery cell reaches a predetermined threshold. The separator is used to isolate the positive electrode plate and the negative electrode plate. When the temperature rises to a predetermined value, the micron-level (and ultimately nano-level) micropores attached to it can be automatically dissolved, so that metal ions cannot pass through the separator, and the internal reaction of the battery cell ends.

[0039] The pressure relief mechanism refers to an element or member that operates to release the internal pressure or temperature when the internal pressure or temperature of the battery cell reaches a predetermined threshold. The threshold design varies according to different design needs. The threshold may be determined by one or more of the materials of the positive electrode plate, negative electrode plate, electrolyte, and separator of the battery cell. For the pressure relief mechanism, forms such as an explosion-proof valve, an air valve, a relief valve, or a safety valve can be used, specifically, a pressure-sensitive or temperature-sensitive element or structure can be used. That is, when the internal pressure or temperature of the battery cell reaches a predetermined threshold, the pressure relief mechanism operates or a weak structure provided in the pressure relief mechanism is destroyed, thereby forming an opening or passage for releasing the internal pressure or temperature.

[0040] The "operation" described in this application refers to the operation of the pressure relief mechanism or its activation to a predetermined state, thereby releasing the internal pressure and temperature of the battery cell. The operation of the pressure relief mechanism may include, but is not limited to, at least a part of the pressure relief mechanism being damaged, crushed, torn, or opened. When the pressure relief mechanism operates, the high-temperature and high-pressure substances inside the battery cell are discharged out from the operating part as exhaust. In this way, pressure relief and temperature release can be generated in the battery cell under a situation where the pressure or temperature can be controlled, thereby avoiding potential more serious accidents.

[0041] The emissions from the battery cell described in this application include, but are not limited to, electrolyte, dissolved or fragmented positive and negative electrode plates, fragments of separators, high-temperature and high-pressure gases generated by the reaction, flames, etc.

[0042] The pressure relief mechanism of the battery cell has an important impact on the safety of the battery. For example, when phenomena such as short circuit and overcharge occur, there is a risk of thermal runaway inside the battery cell, resulting in a sudden increase in pressure or temperature. In this case, the operation of the pressure relief mechanism can release the internal pressure and temperature to the outside, thereby preventing the explosion and ignition of the battery cell.

[0043] Currently, in the battery assembly solution, usually, a thermal management member is attached to the wall where the pressure relief mechanism of the battery cell is installed. In this way, when the battery cell operates normally, the thermal management member can adjust the temperature of the battery cell. However, since the pressure relief mechanism is generally installed on a wall with a small area of the battery cell, when the battery cell operates normally, the temperature adjustment effect on the battery cell is not significant. Also, when thermal runaway occurs in the battery cell, for example, when the pressure relief mechanism of the battery cell operates, the power and destructive force of the emissions from the battery cell discharged through the pressure relief mechanism may be strong, and thus, it may be sufficient to break the thermal management member in that direction, posing a safety problem.

[0044] In view of this, this application provides a technical solution, attaching the thermal management member to the wall where the pressure relief mechanism of the battery cell is not installed. In this way, since the contact area between the thermal management member and the battery cell is large, when the battery cell operates normally, the temperature adjustment effect on the battery cell is significant. Also, since the wall where the thermal management member is attached is not the wall where the pressure relief mechanism of the battery cell is installed, in this way, when thermal runaway occurs in the battery cell, the emissions from the battery cell discharged through the pressure relief mechanism are discharged in a direction away from the thermal management member. Therefore, the emissions do not break the thermal management member, enhancing the safety of the battery.

[0045] The thermal management component is used to regulate the temperature of a plurality of battery cells by containing a fluid. The fluid here may be a liquid or a gas, and temperature regulation refers to heating or cooling a plurality of battery cells. When cooling or lowering the temperature of the battery cells, the thermal management component is used to contain a cooling fluid to lower the temperature of the plurality of battery cells. At this time, the thermal management component may be called a cooling component, a cooling system, a cooling plate, etc., and the fluid contained therein may be called a cooling medium or a cooling fluid, and more specifically, it may be called a coolant or a cooling gas. Also, the thermal management component may be used to heat and raise the temperature of a plurality of battery cells, and the embodiments of the present application do not limit this. Optionally, the fluid may circulate, thereby achieving a better temperature regulation effect. Optionally, the fluid may be water, a mixture of water and ethylene glycol, air, etc.

[0046] All of the technical solutions described in the embodiments of the present application can be applied to various devices using batteries, such as mobile phones, portable devices, notebook computers, electric vehicles, electric toys, power tools, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spaceships, etc.

[0047] As can be understood, the technical solutions described in the embodiments of the present application can be applied not only to the devices described above, but also to all devices using batteries. However, for the sake of brevity of description, all of the following embodiments will be described by taking an electric vehicle as an example.

[0048] For example, as shown in FIG. 1, it is a structural schematic diagram of a vehicle 1 disclosed in an embodiment of the present application. The vehicle 1 may be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, an extended-range electric vehicle, or the like. A motor 40, a controller 30, and a battery 10 may be installed inside the vehicle 1. The controller 30 is used to control the power supply from the battery 10 to the motor 40. For example, the battery 10 may be installed at the bottom of the vehicle 1, or at the front or rear of the vehicle. The battery 10 can be used for power supply of the vehicle 1. For example, the battery 10 can function as an operating power supply of the vehicle 1 and is used in the circuit system of the vehicle 1. For example, it is used for the trunk, navigation, and operating electrical needs during driving of the vehicle 1. In another embodiment of the present application, the battery 10 can function not only as an operating power supply of the vehicle 1 but also as a driving power supply of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power to the vehicle 1.

[0049] To meet different electrical usage needs, the battery may include a plurality of battery cells. The plurality of battery cells may be connected in series, in parallel, or in series-parallel connection. Series-parallel connection refers to a mixture of series connection and parallel connection. The battery may be called a battery pack. Optionally, first, a plurality of battery cells are connected in series, in parallel, or in series-parallel connection to form a battery module, and then, a plurality of battery modules are connected in series, in parallel, or in series-parallel connection to form a battery. That is, a plurality of battery cells may directly form a battery, or first form a battery module, and then the battery module forms a battery.

[0050] For example, as shown in FIG. 2, it is a structural schematic diagram of the battery 10 disclosed in an embodiment of the present application. The battery 10 may include a plurality of battery cells 20. The battery 10 may further include a housing (or called a cap). The inside of the housing is a hollow structure, and the plurality of battery cells 20 are accommodated in the housing. As shown in FIG. 2, the housing may include two parts, here called the first part 111 and the second part 112 respectively. The first part 111 and the second part 112 are integrally engaged. The shapes of the first part 111 and the second part 112 can be determined by the shape of the combination of the plurality of battery cells 20. The first part 111 and the second part 112 may each have one opening. For example, the first part 111 and the second part 112 may both be hollow rectangular parallelepipeds, and each has only one face as the opening face. The opening of the first part 111 and the opening of the second part 112 are arranged opposite to each other, and the first part 111 and the second part 112 are engaged with each other to form a housing having a sealed chamber. After the plurality of battery cells 20 are combined by being connected in parallel, in series, or in series-parallel with each other, they are placed in the housing formed by engaging the first part 111 and the second part 112.

[0051] Optionally, the battery 10 may further include other structures, which will not be described repeatedly here. For example, the battery 10 may further include a bus bar, and the bus bar is used to realize electrical connection between the plurality of battery cells 20, such as parallel connection, series connection, or series-parallel connection. Specifically, the bus bar can realize electrical connection between the battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the bus bar may be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the plurality of battery cells 20 can be further drawn out through the housing via a conductive mechanism. Optionally, the conductive mechanism may belong to the bus bar.

[0052] According to different power needs, the number of battery cells 20 may be set to any value. By connecting a plurality of battery cells 20 in series, parallel, or series-parallel connection, a large capacity or power can be achieved. Since the number of battery cells 20 included in each battery 10 may be large, for easy installation, the battery cells 20 can be grouped and installed, and the battery cells 20 in each group constitute a battery module. The number of battery cells 20 included in the battery module is not limited and may be set according to needs. For example, FIG. 3 is an example of a battery module. The battery may include a plurality of battery modules, and these battery modules can be connected in series, parallel, or series-parallel connection. As shown in FIG. 4, it is a structural schematic diagram of a battery cell 20 according to an embodiment of the present application, and the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cover plate 212. The coordinate system shown in FIG. 4 is the same as that in FIG. 3. The case 211 and the cover plate 212 form a housing or a battery box 21. The wall of the case 211 and the cover plate 212 are both called the wall of the battery cell 20. The shape of the case 211 is determined by the shape after combining one or more electrode assemblies 22. For example, the case 211 may be a hollow rectangular parallelepiped, a cube, or a cylinder. One surface of the case 211 has an opening, so that one or more electrode assemblies 22 can be placed inside the case 211. For example, when the case 211 is a hollow rectangular parallelepiped or a cube, one plane of the case 211 is an opening surface, that is, the plane has no wall body and communicates the inside and outside of the case 211. When the case 211 is a hollow cylinder, the end face of the case 211 is an opening surface, that is, the end face has no wall body and communicates the inside and outside of the case 211. The cover plate 212 covers the opening and connects to the case 211 to form a sealed cavity for placing the electrode assembly 22. The case 211 is filled with an electrolyte, for example, an electrolyte solution.

[0053] The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be installed on the cover plate 212. The cover plate 212 is usually in a flat plate shape, and the two electrode terminals 214 are fixed to the flat plate surface of the cover plate 212. The two electrode terminals 214 are the first electrode terminal 214a and the second electrode terminal 214b respectively. The polarities of the first electrode terminal 214a and the second electrode terminal 214b are opposite. For example, when the first electrode terminal 214a is the positive electrode terminal, the second electrode terminal 214b is the negative electrode terminal. One connection member 23 is correspondingly installed on each of the electrode terminals 214, or may be called a current collecting member 23, which is located between the cover plate 212 and the electrode assembly 22 and is used to realize the electrical connection between the electrode assembly 22 and the electrode terminal 214.

[0054] As shown in FIG. 4, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. For example, when the first tab 221a is the positive electrode tab, the second tab 222a is the negative electrode tab. The first tab 221a of one or more electrode assemblies 22 is connected to one electrode terminal via one connection member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to the other electrode terminal via the other connection member 23. For example, the positive electrode terminal is connected to the positive electrode tab via one connection member 23, and the negative electrode terminal is connected to the negative electrode tab via the other connection member 23.

[0055] In the battery cell 20, according to actual use needs, one or more electrode assemblies 22 may be installed. As shown in FIG. 4, four independent electrode assemblies 22 are installed in the battery cell 20.

[0056] As shown in FIG. 5, it is a structural schematic diagram of a battery cell 20 including a pressure release mechanism 213 according to another embodiment of the present application.

[0057] The case 211, cover plate 212, electrode assembly 22, and connection member 23 in FIG. 5 are the same as those in FIG. 4. For the sake of brevity, they will not be described repeatedly here.

[0058] A pressure relief mechanism 213 may be further installed on one wall of the battery cell 20, for example, the first wall 21a shown in FIG. 5. For ease of illustration, in FIG. 5, the first wall 21a is separated from the case 211, but it is not limited to having an opening on the bottom side of the case 211. The pressure relief mechanism 213 is used to release the internal pressure or temperature by operating when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0059] The pressure relief mechanism 213 may be a part of the first wall 21a, or may have a split structure with the first wall 21a. For example, it is fixed to the first wall 21a by welding. When the pressure relief mechanism 213 is a part of the first wall 21a, for example, the pressure relief mechanism 213 may be formed by scoring the first wall 21a. The thickness of the first wall 21a corresponding to the score is smaller than the thickness of other regions of the first wall 21a excluding the score of the pressure relief mechanism 213. The score is the weakest position of the pressure relief mechanism 213. When there is too much gas generated in the battery cell 20, the internal pressure of the case 211 becomes high and reaches the threshold value, or the internal reaction of the battery cell 20 generates heat and the internal temperature of the battery cell 20 becomes high and reaches the threshold value, the pressure relief mechanism 213 can rupture at the score, communicate the inside and outside of the case 211, and the gas pressure and temperature are released to the outside by the rupture of the pressure relief mechanism 213, further avoiding the explosion of the battery cell 20.

[0060] Optionally, in one embodiment of the present application, as shown in FIG. 5, when the pressure relief mechanism 213 is installed on the first wall 21a of the battery cell 20, an electrode terminal 214 is installed on the third wall of the battery cell 20, and the third wall is different from the first wall 21a.

[0061] Optionally, the third wall and the first wall 21a are installed opposite to each other. For example, the first wall 21a may be the bottom wall of the battery cell 20, and the third wall may be the top wall of the battery cell 20, that is, the cover plate 212.

[0062] Alternatively, as shown in FIG. 5, the battery cell 20 may further include a spacer 24, which is located between the electrode assembly 22 and the bottom wall of the case 211, can play a supporting role for the electrode assembly 22, and can further effectively prevent interference between the electrode assembly 22 and the fillets around the bottom wall of the case 211. Also, one or more through holes may be provided in the spacer 24. For example, a plurality of through holes arranged uniformly may be provided, or when the pressure relief mechanism 213 is provided on the bottom wall of the case 211, through holes may be provided at positions corresponding to the pressure relief mechanism 213, thereby facilitating liquid conduction and gas conduction. Specifically, in this way, the spaces on the upper and lower surfaces of the spacer 24 can be communicated, and the gas and electrolyte generated inside the battery cell 20 can freely penetrate the spacer 24.

[0063] By installing the pressure relief mechanism 213 and the electrode terminal 214 on different walls of the battery cell 20, when the pressure relief mechanism 213 operates, the discharge of the battery cell 20 is further away from the electrode terminal 214, thereby reducing the influence of the discharge on the electrode terminal 214 and the bus bar, and thus improving the safety of the battery.

[0064] Furthermore, when the electrode terminal 214 is installed on the cover plate 212 of the battery cell 20, by installing the pressure relief mechanism 213 on the bottom wall of the battery cell 20, when the pressure relief mechanism 213 operates, the discharge of the battery cell 20 is discharged to the bottom of the battery 10. The bottom of the battery 10 is usually away from the user, thereby reducing the harm to the user.

[0065] The pressure relief mechanism 213 may have various possible pressure relief structures, and the embodiments of the present application do not limit this. For example, the pressure relief mechanism 213 may be a temperature-sensitive pressure relief mechanism, which is configured to be able to melt when the internal temperature of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value, and / or the pressure relief mechanism 213 may be a pressure-sensitive pressure relief mechanism, which is configured to be able to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.

[0066] Figures 6 to 14 are schematic diagrams of the housing 11 of the battery disclosed in the embodiments of the present application. FIG. 7 is an enlarged schematic diagram of part A of the housing 11 shown in FIG. 6.

[0067] For example, as shown in FIGS. 6 to 14, the housing 11 includes an electrical cavity 11a, a collection cavity 11b, and a first heat management member 12a. The electrical cavity 11a is used to accommodate the battery cell 20, and a pressure relief mechanism 213 is installed on the first wall 21a of the battery cell 20. The pressure relief mechanism 213 is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell 20 reaches a threshold value. The collection cavity 11b is used to collect the discharge from the battery cell 20 when the pressure relief mechanism 213 operates. The first heat management member 12a is used to perform temperature adjustment on the battery cell 20 by accommodating a fluid. The first heat management member 12a is mounted on the second wall 21b of the battery cell 20, and the second wall 21b is different from the first wall 21a.

[0068] The embodiments of the present application do not limit the number of battery cells 20 accommodated in the electrical cavity 11a. Note that FIGS. 6, 10, and 13 illustrate an example where the number of battery cells 20 is two, and FIGS. 8, 9, 11, and 12 illustrate an example where the number of battery cells 20 is one, but this should not limit the present application.

[0069] The electrical cavity 11a may be sealed or unsealed, and the embodiments of the present application do not limit this.

[0070] The electrical cavity 11a provides an installation space for the battery cell 20. In some embodiments, a structure for fixing the battery cell 20 may be further installed in the electrical cavity 11a. The shape of the electrical cavity 11a can be determined by the battery cell 20 to be accommodated.

[0071] In some embodiments, the electrical cavity 11a may be rectangular and have six walls. Since the battery cells 20 within the electrical cavity 11a form a high voltage output through electrical connection, the electrical cavity may be referred to as a "high voltage cavity".

[0072] The collection cavity 11b is used to collect the emissions and may be sealed or unsealed, and the embodiments of the present application do not limit this.

[0073] In some embodiments, air or other gases may be contained within the collection cavity 11b. There is no electrical connection within the collection cavity 11b that is connected to the voltage output, and corresponding to the "high voltage cavity", the collection cavity 11b may be referred to as a "low voltage cavity".

[0074] Optionally, or additionally, the collection cavity 11b may contain a liquid such as a cooling medium, or a member for containing the liquid may be installed, thereby further cooling the emissions that enter the collection cavity 11b. Further optionally, the gas or liquid within the collection cavity 11b circulates.

[0075] The embodiments of the present application do not limit the number of the second walls 21b.

[0076] Exemplarily, when the battery cell 20 is in a cuboid shape, for example, as shown in FIGS. 6, 10, and 13, the second wall 21b includes the walls adjacent to the inner wall of the housing 11. Also for example, the second wall 21b includes the walls adjacent to the inner wall of the housing 11 and the adjacent walls between two battery cells 20. Also for example, the second wall 21b includes the walls of the battery cell 20 other than the first wall 21a.

[0077] Optionally, in some embodiments, in order to make the temperature adjustment effect of the first heat management member 12a on the battery cell 20 more significant by increasing the contact area between the first heat management member 12a and the battery cell 20, the second wall 21b may be the wall with the largest area among the walls of the battery cell 20 other than the first wall 21a, or the first wall 21a may be the wall with the smallest area among all the walls of the battery cell 20, that is, it corresponds to the fact that the second wall 21b is not the wall with the smallest area of the battery cell 20.

[0078] When cooling the battery cell 20, the first heat management member 12a may perform temperature adjustment on the battery cell 20 by accommodating a cooling medium. At this time, the first heat management member 12a may be referred to as a cooling member, a cooling system, a cooling plate, or the like.

[0079] Optionally, the first heat management member 12a may also be used for heating, and the embodiments of the present application do not limit this.

[0080] Optionally, the fluid accommodated in the first heat management member 12a may circulate, thereby achieving a better temperature adjustment effect.

[0081] The embodiments of the present application do not limit the connection method between the first heat management member 12a and the battery cell 20. For example, the first heat management member 12a and the battery cell 20 may be fixed and connected by an adhesive.

[0082] In the embodiments of the present application, the first heat management member 12a is mounted on the second wall 21b where the pressure relief mechanism 213 of the battery cell 20 is not installed. In this way, since the contact area between the first heat management member 12a and the battery cell 20 is large, when the battery cell 20 operates normally, the temperature adjustment effect on the battery cell 20 is significant.

[0083] Moreover, since the second wall 21b to which the first heat management member 12a is attached is not the first wall 21a where the pressure release mechanism 213 of the battery cell 20 is installed, in this way, when thermal runaway occurs in the battery cell 20, the emissions of the battery cell discharged through the pressure release mechanism 213 are discharged in a direction away from the first heat management member 12a. Therefore, the emissions do not break the first heat management member 12a, enhancing the safety of the battery.

[0084] Optionally, in some embodiments, the electrode terminal 214 is installed on the third wall 21c of the battery cell 20. The third wall 21c is different from the first wall 21a and the third wall 21c is different from the second wall 21b. That is, the wall where the pressure release mechanism 213 is located, the wall where the electrode terminal 214 is located, and the wall to which the first heat management member 12a is attached are three different walls of the battery cell 20. In this way, when the pressure release mechanism 213 operates, the emissions of the battery cell 20 discharged through the pressure release mechanism 213 are discharged in a direction away from the first heat management member 12a and the electrode terminal 214. Therefore, the emissions do not break the first heat management member 12a. At the same time, the influence of the emissions on the electrode terminal 214 can be reduced, avoiding the ignition risk due to high voltage, reducing its danger, and thereby enhancing the safety of the battery.

[0085] The embodiments of the present application do not limit the number of the third walls 21c.

[0086] The embodiments of the present application do not limit the number of the electrode terminals 214 installed on the third wall 21c.

[0087] When the number of the third walls 21c is one, two electrode terminals 214 may be installed on the third wall 21c, and the polarities of these two electrode terminals 214 are opposite.

[0088] For example, as shown in FIGS. 8 to 10, the first electrode terminal 214a and the second electrode terminal 214b are installed on the third wall 21c, and the polarities of the first electrode terminal 214a and the second electrode terminal 214b are opposite. For example, when the first electrode terminal 214a is a positive electrode terminal, the second electrode terminal 214b is a negative electrode terminal.

[0089] When the number of the third walls 21c is two, one electrode terminal 214 is installed on each of the third walls 21c, and the polarities of the electrode terminals 214 installed on the two third walls 21c are opposite to each other.

[0090] For example, as shown in FIGS. 11 and 12, an electrode terminal 214 is installed on the left third wall 21c, an electrode terminal 214 is installed on the right third wall 21c, and the polarities of the electrode terminal 214 installed on the left third wall 21c and the electrode terminal 214 installed on the right third wall 21c are opposite to each other.

[0091] It should be noted that when the number of the third walls 21c is two, the embodiments of the present application do not limit the positional relationship of the two third walls 21c. For example, the two third walls 21c may be installed adjacent to each other, or, as shown in FIGS. 11 and 12, the two third walls 21c may be installed opposite to each other.

[0092] The embodiments of the present application do not limit the positional relationship of the first wall 21a, the second wall 21b and the third wall 21c.

[0093] Exemplarily, in some embodiments, as shown in FIGS. 6, 8, 10 and 14, the third wall 21c and the first wall 21a are installed opposite to each other, and the second wall 21b connects the third wall 21c and the first wall 21a, that is, the second wall 21b is installed adjacent to both the first wall 21a and the third wall 21c. Thus, when the pressure relief mechanism 213 operates, the discharge of the battery cell 20 discharged through the pressure relief mechanism 213 is discharged in a direction away from the electrode terminal 214. Therefore, the influence of the discharge on the electrode terminal 214 can be further reduced, the ignition risk due to high voltage can be avoided, the danger can be reduced, and thereby the safety of the battery can be improved.

[0094] Furthermore, optionally, in some embodiments, as shown in FIG. 8, the battery cell 20 includes two second walls 21b installed opposite to each other, and the two second walls 21b are respectively connected to both ends of the third wall 21c and the first wall 21a.

[0095] Exemplarily, in some other embodiments, as shown in FIGS. 9, 11, and 12, the second wall 21b and the first wall 21a are installed opposite to each other, and the third wall 21c connects the second wall 21b and the first wall 21a.

[0096] Furthermore, optionally, in some embodiments, as shown in FIG. 9, the battery cell 20 includes two second walls 21b, one of the second walls 21b is installed opposite to the third wall 21c, and the other second wall 21b is installed opposite to the first wall 21a.

[0097] Optionally, in some embodiments, in order to facilitate the processing of the heat management member, the two first heat management members 12a installed on the two second walls 21b may be integrally formed. Of course, the two first heat management members 12a may also be separately formed, and the embodiments of the present application do not limit this.

[0098] Optionally, when the two first heat management members 12a are integrally formed, the fluids accommodated in the two first heat management members 12a can communicate with each other.

[0099] Optionally, in some embodiments, as shown in FIGS. 6 to 14, the electrode terminal 214 is installed in the first region 21c-1 of the third wall 21c. Further, as shown in FIGS. 10 and 12, the housing 11 further includes a second heat management member 12b. The second heat management member 12b is used to adjust the temperature of the battery cell 20 by containing a fluid. The second heat management member 12b is mounted on the second region 21c-2 of the third wall 21c, and the second region 21c-2 is different from the first region 21c-1. That is, the second heat management member 12b is installed in the region of the third wall 21c where the electrode terminal 214 is not installed. In this way, the contact area between the heat management member and the battery cell 20 is further increased. When the battery cell operates normally, the temperature adjustment effect on the battery cell 20 is more significant. In addition, since the third wall 21c on which the second heat management member 12b is mounted is not the first wall 21a where the pressure relief mechanism 213 of the battery cell 20 is installed, in this way, when a thermal runaway occurs in the battery cell 20, the discharge of the battery cell 20 discharged through the pressure relief mechanism 213 is discharged in a direction away from the second heat management member 12b and the electrode terminal 214. Therefore, the discharge does not break the second heat management member 12b, and at the same time, the influence of the discharge on the electrode terminal 214 can be reduced, the ignition risk due to high voltage can be avoided, the risk can be reduced, and thereby the safety of the battery can be improved.

[0100] Optionally, when the third wall 21c and the second wall 21b are adjacent, in order to facilitate the processing of the heat management member, the second heat management member 12b and the first heat management member 12a may be integrally formed. Of course, the second heat management member 12b and the first heat management member 12a may also be separately formed, and the embodiments of the present application do not limit this.

[0101] Optionally, when the second heat management member 12b and the first heat management member 12a are integrally formed, the fluid contained in the second heat management member 12b and the fluid contained in the first heat management member 12a can communicate with each other.

[0102] What needs to be explained is that the number of electrode terminals 214 is the same as that of the first regions 21c-1. As shown in FIGS. 6 to 10, the first electrode terminal 214a and the second electrode terminal 214b are installed on the third wall 21c. The first electrode terminal 214a corresponds to one first region 21c-1, and the second electrode terminal 214b corresponds to one first region 21c-1.

[0103] The embodiment of the present application does not limit the number of the second regions 21c-2.

[0104] Optionally, in some embodiments, as shown in FIG. 10, in order to facilitate the attachment of the second heat management member 12b to the battery cell 20, a protruding portion 21c-3 protruding in a direction away from the inside of the battery cell 20 is installed in the second region 21c-2, and the second heat management member 12b is attached to the protruding portion 21c-3.

[0105] Optionally, in some embodiments, the electrode terminal 214 is installed on the second wall 21b.

[0106] The embodiment of the present application does not limit the number of the electrode terminals 214 installed on the second wall 21b.

[0107] In one example, one electrode terminal 214 may be installed on the second wall 21b. At this time, another electrode terminal 214 may be installed on a wall other than the second wall 21b of the battery cell 20, or another electrode terminal 214 may be installed on a wall other than the second wall 21b and the first wall 21a of the battery cell 20.

[0108] In another example, two electrode terminals 214 may be installed on the second wall 21b.

[0109] Optionally, in some embodiments, electrode terminals 214 may be installed in the third region of the second wall 21b. Further, the housing 11 further includes the second heat management member 12b described above. The second heat management member 12b is used to regulate the temperature of the battery cell 20 by containing a fluid. The second heat management member 12b is mounted in the fourth region of the second wall 21b, and the third region and the fourth region are different. That is, the second heat management member 12b is installed in a region of the second wall 21b where the electrode terminal 214 is not installed.

[0110] It should be noted that the number of electrode terminals 214 and the third region is the same.

[0111] Optionally, in some embodiments, for example, as shown in FIGS. 6 to 13, a protruding portion protruding in a direction away from the inside of the battery cell 20 is installed in the fourth region, and the second heat management member 12b is mounted on the protruding portion.

[0112] The embodiments of the present application do not limit the number of the fourth regions.

[0113] Optionally, in some embodiments, for example, as shown in FIGS. 6 to 13, the housing 11 further includes a separation member 13, and the separation member 13 is mounted on the first wall 21a.

[0114] In some embodiments, for example, as shown in FIGS. 6 to 12, the separation member 13 can function as the bottom wall of the housing 11, that is, the separation member 13 is used to separate the electrical cavity 11a and the collection cavity 11b. In this way, when the pressure relief mechanism 213 operates, the discharge of the battery cell 20 enters the collection cavity 11b and does not enter the electrical cavity, or enters the electrical cavity 11a in a small amount, thereby not affecting the electrical connection in the electrical cavity 11a, and thus the safety of the battery can be improved.

[0115] In some other embodiments, for example, as shown in FIG. 13, the isolation member 13 and the bottom wall 1121 of the housing 11 are installed independently, that is, one surface of the isolation member 13 is attached to the first wall 21a, and the other surface is attached to the bottom wall 1121 of the housing 11. That is, by installing the isolation member 13, a gap is formed between the first wall 21a of the battery cell 20 and the bottom wall 1121 of the housing 11, and the gap can provide sufficient space for the operation of the pressure relief mechanism 213.

[0116] Optionally, in some embodiments, a weak area is provided in the isolation member 13, and the weak area is used to be broken when the pressure relief mechanism 213 operates, so that the discharge can pass through the weak area and enter the collection cavity 11b. In this way, when the pressure relief mechanism 213 operates, the discharge can directly strike the weak area to open the weak area and enter the collection cavity 11b.

[0117] Optionally, in some embodiments, the weak area and the pressure relief mechanism 213 are installed opposite to each other. In this way, when the pressure relief mechanism 213 operates, the discharge can directly strike the weak area to open the weak area.

[0118] Here, the so-called "isolation" means separation and does not need to be sealed. For example, in some other embodiments, as shown in FIGS. 6 to 13, a through hole 131 may be provided in the isolation member 13. The through hole 131 is used for the discharge to pass through the through hole 131 and enter the collection cavity 11b when the pressure relief mechanism 213 operates. At this time, the electrical cavity 11a and the collection cavity 11b communicate with each other through the through hole 131. The function of the isolation member 13 is also used to isolate the electrical cavity 11a and the collection cavity 11b.

[0119] Optionally, in some embodiments, the through hole 131 and the pressure relief mechanism 213 are installed opposite to each other. In this way, when the pressure relief mechanism 213 operates, the discharge can directly pass through the through hole 131 and enter the collection cavity 11b.

[0120] Optionally, in some embodiments, as shown in FIGS. 6 to 13, the housing 11 further includes a protective member 14. The protective member 14 is used to protect the isolation member 13, and the protective member 14 and the isolation member 13 form a collection cavity 11b. The collection cavity 11b formed by the protective member 14 and the isolation member 13 can effectively collect and buffer the discharge and reduce its risk.

[0121] The embodiments of the present application do not limit the connection method between the isolation member 13 and the battery cell 20. For example, the isolation member 13 and the battery cell 20 may be fixed and connected by an adhesive.

[0122] FIG. 14 is a schematic structural diagram of a battery provided in an embodiment of the present application.

[0123] As shown in FIG. 14, the battery 10 includes a plurality of battery cells 20 and the above-mentioned housing 11. The plurality of battery cells 20 are housed in the housing 11. The battery cell 20 may be the battery cell 20 described in FIGS. 6 to 13.

[0124] For the related descriptions of the housing 11 and the battery cell 20, reference may be made to the above descriptions, and they will not be repeated here.

[0125] Optionally, in some embodiments, the battery 10 further includes a bus bar 15. The bus bar 15 is used to realize the electrical connection of the plurality of battery cells 20.

[0126] Optionally, the first heat management member 12a and / or the second heat management member 12b can be further used to adjust the temperature of the bus bar 15 (mainly for cooling).

[0127] The embodiments of the present application further provide a power consumption device, and the power consumption device may include the battery 10 of each of the above embodiments. Optionally, the power consumption device may be a vehicle 1, a ship or a spacecraft.

[0128] The above describes the battery 10 and the power consumption device according to the embodiments of the present application. Hereinafter, the manufacturing method and device of the battery according to the embodiments of the present application will be described. For parts not described in detail, reference may be made to the above embodiments.

[0129] FIG. 15 shows a schematic flowchart of a battery manufacturing method 300 according to an embodiment of the present application. As shown in FIG. 15, the method 300 may include the following S310 to S330.

[0130] S310: Provide a plurality of battery cells 20, and a pressure relief mechanism 213 is installed on the first wall 21a of the battery cell 20. The pressure relief mechanism 213 is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0131] S320: Provide a housing 11, and the housing 11 includes an electrical cavity 11a, a collection cavity 11b, and a first heat management member 12a.

[0132] S330: Accommodate the plurality of battery cells 20 in the electrical cavity 11a. The collection cavity 11b is used to collect the emissions from the battery cells 20 when the pressure relief mechanism 213 operates. The first heat management member 12a is used to perform temperature adjustment on the battery cells 20 by containing a fluid. The first heat management member 12a is mounted on the second wall 21b of the battery cell 20, and the second wall 21b is different from the first wall 21a.

[0133] FIG. 16 shows a schematic block diagram of a battery manufacturing apparatus 400 according to an embodiment of the present application. As shown in FIG. 16, the battery manufacturing apparatus 400 may include a providing module 410 and a mounting module 420.

[0134] The supply module 410 is used to supply a plurality of battery cells 20, wherein a pressure relief mechanism 213 is installed on a first wall 21a of the battery cell 20, and the pressure relief mechanism 213 is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell 20 reaches a threshold value, and to provide a housing 11 including an electrical cavity 11a, a collection cavity 11b, and a first heat management member 12a.

[0135] The mounting module 420 is used to accommodate the plurality of battery cells 20 in the electrical cavity 11a. The collection cavity 11b is used to collect the emissions from the battery cells 20 when the pressure relief mechanism 213 operates. The first heat management member 12a is used to perform temperature adjustment on the battery cells 20 by containing a fluid. The first heat management member 12a is mounted on a second wall 21b of the battery cell 20, and the second wall 21b is different from the first wall 21a.

[0136] The present application has been described with reference to preferred embodiments. However, various improvements can be made without departing from the scope of the present application, and equivalent members can be exchanged therein. In particular, as long as there is no structural contradiction, the technical features described in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed in the specification, but includes all technical solutions falling within the scope of the claims.

Description of Reference Numerals

[0137] 10 Battery 11 Housing 11a Electrical Cavity 11b Collection Cavity 12a First Heat Management Member 20 Battery Cell 213 Pressure Relief Mechanism

Claims

1. A battery, comprising a plurality of battery cells in which a pressure relief mechanism is installed on a first wall, the pressure relief mechanism being used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value; a housing, a bus bar, and the housing includes: an electrical cavity for accommodating the plurality of battery cells, a collection cavity for collecting emissions from the battery cell when the pressure relief mechanism operates, a first heat management member that is used to perform temperature regulation on the battery cell by containing a fluid and is attached to a second wall different from the first wall of the battery cell; and an electrode terminal is installed on a third wall of the battery cell, the third wall is different from the first wall, and the third wall is different from the second wall, the electrode terminal is installed in a first region of the third wall, the bus bar is used to electrically connect the plurality of battery cells via the electrode terminal, the housing further includes a second heat management member that is used to perform temperature regulation on the battery cell by containing a fluid and is attached to a second region different from the first region of the third wall, the second heat management member has a flat plate structure, is not attached to the first region, and the second heat management member is not in thermal contact with the electrode terminal.

2. A protrusion protruding in a direction away from the inside of the battery cell is installed in the second region, and the second heat management member is attached to the protrusion. The battery according to claim 1.

3. The third wall and the first wall are installed opposite to each other, and the second wall connects the third wall and the first wall, or The second wall and the first wall are installed opposite to each other, and the third wall connects the second wall and the first wall. The battery according to claim 1 or 2.

4. The battery according to claim 1, wherein an electrode terminal is installed on the second wall.

5. The housing is used to isolate the electrical cavity and the collection cavity, and includes an isolation member mounted on the first wall. The battery according to any one of claims 1 to 4.

6. A weak area is provided in the isolation member, and the weak area is used to be broken when the pressure relief mechanism operates, so that the discharge passes through the weak area and enters the collection cavity. The battery according to claim 5.

7. The weak area and the pressure relief mechanism are installed opposite to each other. The battery according to claim 6.

8. A through hole is provided in the isolation member, and the through hole is used for the discharge to pass through the through hole and enter the collection cavity when the pressure relief mechanism operates. The battery according to claim 5.

9. The through hole is installed opposite to the pressure relief mechanism. The battery according to claim 8.

10. A power consumption device, including the battery according to any one of claims 1 to 9, wherein the battery is used to provide electrical energy to the power consumption device.

11. A method for manufacturing a battery, A step of providing a plurality of battery cells, wherein a pressure relief mechanism is installed on the first wall of the battery cell, and the pressure relief mechanism is used to release the internal pressure by operating when the internal pressure or temperature of the battery cell reaches a threshold value. A step of providing a housing including an electrical cavity, a collection cavity, and a first heat management member. A step of providing a bus bar. The step of accommodating the plurality of battery cells in the electric cavity; including, the collection cavity is used for collecting the emissions from the battery cells when the pressure relief mechanism operates, the first heat management member is used for performing temperature adjustment on the battery cells by accommodating a fluid, the first heat management member is mounted on a second wall of the battery cell, the second wall is different from the first wall; an electrode terminal is installed on a third wall of the battery cell, the third wall is different from the first wall, and the third wall is different from the second wall; the electrode terminal is installed in a first region of the third wall; the bus bar is used for electrically connecting the plurality of battery cells via the electrode terminals; the housing further includes a second heat management member mounted in a second region different from the first region of the third wall, and is used for performing temperature adjustment on the battery cells by accommodating a fluid; The second heat management member has a flat plate structure, is not mounted in the first region, and is not in thermal contact with the electrode terminal. A method for manufacturing a battery.

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