Battery device and electric equipment

Abstract

The utility model relates to the related technical field of batteries, and discloses a battery device and electric equipment, the battery device comprises a box body, a battery monomer, a heat exchange assembly and a discharge assembly, the box body is provided with a first wall, the first wall is provided with a communication hole, and the battery monomer is arranged in the box body; the heat exchange assembly is provided with a heat exchange channel for a heat exchange medium to circulate, and the heat exchange assembly is arranged in the box body and is used for adjusting the temperature of the battery monomers; and the discharging assembly is arranged on the first wall and blocks the communicating hole, the discharging assembly comprises a sensitive part, the sensitivity of the sensitive part to a heat exchange medium is larger than that of the sensitive part to an environment medium, and the sensitive part is arranged to be capable of being triggered and actuated by the heat exchange medium so that the discharging assembly can form a discharging channel communicating the interior and the exterior of the box body. The possibility that the discharge assembly is triggered by an environmental medium by mistake is reduced, the reliability of the battery device is improved, the possibility that the battery device is repaired by mistake is reduced, and the maintenance cost of the battery device is reduced.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery device and an electrical equipment. Background Art

[0002] The information provided in this part is only background information related to this application, and it is not necessarily prior art.

[0003] With the increasing demand for clean energy, battery devices have been widely developed. Battery devices can store electrical energy and can be widely used in electronic devices such as mobile phones, laptops, battery cars, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools.

[0004] How to improve the reliability of battery devices has always been the focus of attention in the research and development process of battery devices. Summary of the Utility Model

[0005] In view of the above problems, this application provides a battery device and an electrical equipment to at least improve the reliability of the battery device.

[0006] A first aspect of this application provides a battery device, including a box body, battery cells, a heat exchange component, and a discharge component. The box body has a first wall, and a communication hole is provided on the first wall. The battery cells are arranged inside the box body; the heat exchange component is provided with a heat exchange channel for the heat exchange medium to flow through, and the heat exchange component is arranged on the box body to adjust the temperature of the battery cells; the discharge component is arranged on the first wall and seals the communication hole. The discharge component includes a sensitive member, the sensitive member is more sensitive to the heat exchange medium than to the environmental medium, and the sensitive member is arranged to be actuated by the heat exchange medium, so that the discharge component forms a discharge channel communicating the inside and outside of the box body.

[0007] In the technical solution of the embodiment of this application, the sensitive member is more sensitive to the heat exchange medium than to the environmental medium. When the sensitive member encounters the heat exchange medium, it can be triggered to actuate to make the discharge component form a discharge channel communicating the inside and outside of the box body. In this way, when the heat exchange medium of the heat exchange component leaks, the heat exchange medium can be discharged in a timely manner, reducing the damage of the heat exchange medium to the battery device; at the same time, when environmental media such as condensed water or external water vapor in the environment act on the sensitive member, the sensitive member is not easily triggered to actuate, and the discharge component can maintain a sealed state, reducing the possibility of the discharge component being accidentally triggered by the environmental medium, improving the reliability of the battery device, reducing the possibility of the battery device being accidentally repaired, reducing the maintenance cost of the battery device, and improving the user experience.

[0008] In some embodiments of the present application, the sensitivity component has a lower tolerance to the heat exchange medium than to the ambient medium. The sensitivity component having a lower tolerance to the heat exchange medium than to the ambient medium enables the sensitivity component to be easily damaged or undergo significant deformation and trigger actuation when it comes into contact with the heat exchange medium and is affected by the heat exchange medium. However, when the sensitivity component comes into contact with the ambient medium and is affected by the ambient medium, the sensitivity component is not easily damaged or undergo significant deformation to trigger actuation. This reduces the possibility of the emission component being accidentally triggered by the ambient medium, improves the reliability of the battery device, reduces the possibility of the battery device being accidentally repaired, reduces the maintenance cost of the battery device, and improves the user experience.

[0009] In some embodiments of the present application, the sensitivity component is configured to have a lower swelling ability with respect to the ambient medium than to the heat exchange medium. The sensitivity component having a lower swelling ability with respect to the ambient medium than to the heat exchange medium means that when the sensitivity component comes into contact with the heat exchange medium and is affected by the heat exchange medium, the sensitivity component easily absorbs the heat exchange medium and causes an increase in volume, thereby being triggered to actuate. However, when the sensitivity component comes into contact with the ambient medium and is affected by the ambient medium, the sensitivity component is not easily absorb the ambient medium, absorbs less ambient medium, and is not easily triggered to actuate due to an increase in volume. This reduces the possibility of the emission component being accidentally triggered by the ambient medium, improves the reliability of the battery device, reduces the possibility of the battery device being accidentally repaired, reduces the maintenance cost of the battery device, and improves the user experience.

[0010] In some embodiments of the present application, the material of the sensitivity component is nitrile rubber;

[0011] And / or, the heat exchange medium is a liquid containing an antifreeze agent, and the ambient medium is water.

[0012] In some embodiments of the present application, the sensitivity component is configured to block the emission channel. The form in which the sensitivity component is triggered to actuate includes at least partially being damaged to form a through hole, and when the sensitivity component is in the triggered actuation state, the through hole communicates the inside and outside of the box. The sensitivity component is configured to block the emission channel and is triggered to actuate by being damaged to communicate the emission channel. The structure is simple, and the current state of the emission component can be intuitively obtained.

[0013] In some embodiments of the present application, the emission component further includes an auxiliary actuation member configured to apply a force to the sensitivity component to cause the sensitivity component to be triggered to actuate by the heat exchange medium. By providing the auxiliary actuation member, the convenience of triggering the sensitivity component to actuate by the heat exchange medium can be improved, enabling the sensitivity component to be promptly triggered to actuate by the heat exchange medium, thereby opening the emission component, improving the timeliness of heat exchange medium emission, and reducing the damage to the battery device caused by heat exchange medium leakage.

[0014] In some embodiments of the present application, the auxiliary actuator includes an elastic member, and the elastic member is configured to apply elastic force to the sensitive member. The elastic member can undergo elastic deformation and apply force to the sensitive member through elastic deformation, thereby improving the convenience and applicability of the auxiliary actuator, and by adjusting the deformation of the elastic member, the force applied to the sensitive member can be adjusted so that the force borne by the sensitive member is within a reasonable range, thereby improving the accuracy of the sensitive member being triggered and actuated, reducing the possibility that the sensitive member is triggered and actuated and loses its sealing effect due to excessive force when the heat exchange medium has not yet leaked, and reducing the possibility that the sensitive member is difficult to trigger and actuate and difficult to discharge the heat exchange medium when the heat exchange medium leaks due to too small force.

[0015] In some embodiments of the present application, the auxiliary actuator is pressed against the sensitive member. The auxiliary actuator is pressed against the sensitive member, which can apply pressure to the sensitive member, has a simple structure, and can improve the setting stability of the sensitive member.

[0016] In some embodiments of the present application, the discharge assembly further comprises a shielding member, the shielding member is provided with a communication port, the communication port is provided to communicate with the discharge channel, and the shielding member is provided on a side of the sensitive member away from the inside of the box body. The shielding member can shield and protect the sensitive member, reduce the possibility of external components impacting or corroding the sensitive member, and improve the reliability of the sensitive member.

[0017] In some embodiments of the present application, the discharge assembly further includes a valve body, the valve body is mounted on the first wall, the valve body is provided with a valve hole, the valve hole is communicated with the interior of the box, the sensitive component is configured to block the valve hole, and the sensitive component can be triggered by the heat exchange medium to open the valve hole, thereby forming the discharge channel. By providing the valve body, the sensitive component can be assembled with the valve body as a whole, and the discharge assembly can be assembled with the first wall through the valve body, thereby improving the connection convenience and assembly reliability of the discharge assembly with the first wall.

[0018] In some embodiments of the present application, the discharge assembly further includes an auxiliary actuator, which includes an elastic member and an actuating member. The elastic member is disposed between the valve body and the actuating member, and the elastic member is in an elastically deformed posture and applies an elastic force to the actuating member, so that the actuating member acts on the sensitive member. The auxiliary actuator, the valve body, and the sensitive member are assembled and fixed to each other, and the structure is simple. Among them, the elastic member can undergo elastic deformation and apply a force to the sensitive member through the elastic deformation, which improves the convenience and applicability of the setting of the auxiliary actuator. Moreover, by adjusting the deformation amount of the elastic member, the force applied to the sensitive member can be adjusted, so that the force borne by the sensitive member is within a relatively reasonable range, which improves the accuracy of the sensitive member being triggered and actuated; it reduces the possibility that the sensitive member is triggered and actuated due to excessive force when the heat exchange medium has not leaked, resulting in the loss of the sealing function, and also reduces the possibility that the sensitive member is difficult to be triggered and actuated and difficult to discharge the heat exchange medium due to too small a force when the heat exchange medium leaks.

[0019] In some embodiments of the present application, the actuating member is arranged to be movable relative to the valve body along the deformation direction of the elastic member. The actuating member can move along the deformation direction of the elastic member, so that an elastic contact is formed between the actuating member and the sensitive member. When the volume of the sensitive member changes, the actuating member can move along the deformation direction of the elastic member and always remain in contact or connection with the sensitive member, which improves the adaptability of the auxiliary actuator; at the same time, under the action of the elastic member, the auxiliary actuator has a buffering performance, reducing the possibility of the auxiliary actuator damaging the sensitive member under normal conditions.

[0020] In some embodiments of the present application, a guiding member is provided on the valve body, and the actuating member is connected to the guiding member and arranged to be in sliding fit. By providing the guiding member, the directivity of the movement of the actuating member relative to the valve body can be improved, thereby improving the reliability of the discharge assembly.

[0021] In some embodiments of the present application, the actuating member is provided with a receiving groove having an opening, one end of the guiding member is inserted into the receiving groove and can slide in the receiving groove, and the elastic member is disposed in the receiving groove and is restricted by the guiding member. The actuating member is provided with a receiving groove, and the spring is arranged in the receiving groove. The receiving groove can play a role in protecting and guiding the spring, improving the reliability of the spring deformation process; moreover, by the guiding member extending into the receiving groove to restrict the elastic member, in the assembly process, by adjusting the amount of the guiding member extending into the receiving groove, the compression amount of the elastic member can be adjusted, thereby adjusting the force applied by the auxiliary actuator to the sensitive member.

[0022] In some embodiments of the present application, both the elastic member and the actuating member are disposed in the valve hole. The actuating member and the elastic member can be shielded and protected by the valve member, and the structure is simple and the reliability is high.

[0023] In some embodiments of the present application, the valve body has a first end and a second end that are oppositely arranged, the first end is closer to the interior of the box body than the second end, and the sensitive component is blocked at the second end. The sensitive component is arranged at one end of the valve body that is close to the outside of the box body (i.e., the second end), so that the heat exchange medium entering the valve hole can better contact with the sensitive component and cause the sensitive component to be triggered and actuated, thereby improving the reliability and timeliness of the sensitive component being triggered and actuated by the heat exchange medium.

[0024] In some embodiments of the present application, the first end is configured as a sealing structure, and an inlet is configured on the side wall of the valve body surrounding the valve hole, and the inlet communicates the valve hole with the interior of the box. The inlet of the valve body is configured on the side wall of the valve body, and the first end is configured as a sealing structure, which reduces the possibility of dust and other debris entering the valve hole from the first end; at the same time, the inlet of the valve body can cover at least a part of the area along the circumference of the valve body, which facilitates the heat exchange medium to flow into the valve hole from multiple directions, improves the reliability and timeliness of the sensitive part being triggered and actuated by the heat exchange medium, and improves the timeliness of the heat exchange medium being discharged from the discharge component.

[0025] In some embodiments of the present application, the sensitive component includes a blocking portion and a fixing portion connected to the blocking portion, the sensitive component is connected to the valve body via the fixing portion, and the blocking portion blocks the valve hole. The fixing portion is provided to facilitate relative fixing of the sensitive component and the valve body.

[0026] In some embodiments of the present application, the fixing part is arranged around the circumference of the blocking part, and the valve body is provided with an assembling part, the assembling part is arranged around the circumference of the valve body, and the assembling part is connected to the fixing part. The assembling part is arranged around the valve body, the fixing part is arranged around the blocking part, and the assembling part is correspondingly connected to the fixing part, so that the structure is easy to assemble.

[0027] In some embodiments of the present application, the discharge assembly further includes a shielding member, the shielding member is disposed on the side of the sensitive member away from the inside of the housing, the shielding member includes a connecting portion and a shielding portion, the connecting portion is disposed around the shielding portion, the shielding portion is provided with a connecting port, the shielding portion is disposed opposite to the blocking portion, the connecting portion, the fixing portion and the assembling portion are fixedly connected, and the fixing portion is clamped between the connecting portion and the assembling portion. The shielding member, the valve body and the sensitive member are relatively assembled and fixed, the structure is simple, and the three can be assembled onto the housing after completion, which is convenient to operate; and the sensitive member is pressed and fixed by the valve body and the shielding member, the sensitive member can better block the valve hole of the valve body, reducing the possibility of water outside the battery device entering the housing.

[0028] In some embodiments of the present application, the discharge assembly further includes a valve seat, the valve body is connected to the valve seat, and is connected to the first wall through the valve seat. The valve seat is provided to facilitate assembly of the valve body and improve reliability of connection between the entire discharge assembly and the first wall.

[0029] In some embodiments of the present application, the valve body and the valve seat are detachably connected, so that the valve seat and the valve body can be replaced independently, thereby reducing maintenance and repair costs.

[0030] In some embodiments of the present application, the valve seat is pressed against the side of the first wall facing the inside of the box body, one end of the valve body passes through the connecting hole and is connected to the valve seat, and the other end of the valve body is provided with an assembly part, and the assembly part is pressed against the side of the first wall away from the inside of the box body. The valve seat and the valve body cooperate with each other to press against the first wall, so as to achieve relative fixation of the discharge assembly and the first wall, with a simple structure and convenient assembly and maintenance.

[0031] A second aspect of the present application provides an electrical device, comprising a battery device provided in the present application or any embodiment of the present application, wherein the battery device is used to store electrical energy or provide electrical energy.

[0032] The electrical equipment of this embodiment has the same beneficial effects as the battery device proposed in this application or any embodiment of this application.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0036] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0037] Figure 2Schematic structural diagram of a battery device proposed in some embodiments of the present application;

[0038] Figure 3 Split schematic diagram of a battery cell proposed in some embodiments of the present application;

[0039] Figure 4 Partial structural schematic diagram of a box body of a battery device proposed in some embodiments of the present application;

[0040] Figure 5 Cross-sectional schematic diagram of an emission component assembled on a first wall proposed in some embodiments of the present application;

[0041] Figure 6 Partial structural schematic diagram of an emission component proposed in some embodiments of the present application;

[0042] Figure 7 Cross-sectional schematic diagram (a cross-section parallel to the axial direction X of the emission component) of an emission component when a sensitive component is triggered and actuated proposed in some embodiments of the present application;

[0043] Figure 8 Cross-sectional schematic diagram (a cross-section perpendicular to the axial direction X of the emission component) of an emission component proposed in some embodiments of the present application;

[0044] Figure 9 Schematic diagram of the force change of a sensitive component proposed in some embodiments of the present application.

[0045] The reference numerals in the specific embodiments are as follows:

[0046] 1000, vehicle; 10, battery device; 20, controller; 30, motor;

[0047] 100, box body; 101, first box body; 102, second box body; 103, first wall; 104, communication hole;

[0048] 200, battery cell assembly; 210, battery cell; 211, electrode assembly; 212, outer shell; 213, housing; 214, end cover; 215, tab; 216, electrode terminal;

[0049] 300, heat exchange component;

[0050] 400. Emission component; 401. Emission channel; 410. Sensitive part; 411. Fixing part; 412. Sealing part; 413. Through hole; 414. Fracture part; 420. Auxiliary actuating part; 421. Elastic part; 422. Actuating component; 4221. Accommodating groove; 430. Shielding part; 431. Connecting part; 432. Shielding portion; 4321. Connecting section; 4322. Shielding section; 433. Communication port; 440. Valve body; 441. First end; 442. Second end; 443. Valve hole; 444. Inlet; 445. Guide part; 446. Assembly part; 450. Valve seat; 451. Through hole; 460. Fastener; 470. Sealing washer. Detailed implementation manners

[0051] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0053] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0054] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0055] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0056] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0057] In the description of the embodiments of the present application, for technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0058] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0059] A battery device is usually provided with a heat exchange component, which can be used to adjust the temperature of the battery device so that the battery device can be used at an appropriate temperature. The heat exchange component can use a heat exchange medium (such as a coolant) to assist in heat exchange. However, if the heat exchange medium leaks, it is likely to cause damage to the battery device, resulting in the inoperability of the battery device.

[0060] Regarding the problem of heat exchange medium leakage, the box body can be provided with a drain valve, which can be opened in the case of heat exchange medium leakage to drain the heat exchange medium and reduce the damage of the heat exchange medium to the battery device. Usually, after the drain valve is opened, the battery device will be returned to the factory for repair to repair the heat exchange component. However, during the actual repair process, it is found that in some battery devices, the heat exchange medium does not leak, but its drain valve is opened, resulting in the inoperability of the battery device and thus being repaired.

[0061] After research, it is found that in some technologies, the triggering and opening of the drain valve is based on the moisture-absorbing expansion body absorbing moisture, which expands itself, increases in volume, and has an outward thrust on the valve cover, creating a gap between the inside and outside of the box body of the battery device, thereby discharging the heat exchange medium outside the battery device. However, in such designs, in addition to expanding when encountering water in the leaked heat exchange medium, the moisture-absorbing expansion body will also be mis-triggered (i.e., false alarm) when encountering water generated by internal and external factors of the battery device, such as condensed water inside the battery device, or the situation where the drain valve of the battery device has poor self-sealing performance or external water enters the drain valve due to external impact, etc., which will all cause the drain valve to be mis-triggered, reducing the reliability of the battery device and also leading to doubts from users about the quality of the battery device.

[0062] In view of the above problems, in order to reduce the mis-triggering and false alarm of the drain valve, improve the reliability of the battery device, and improve the user experience, the present application provides a battery device, on the box body of which a discharge assembly is provided. The discharge assembly includes a sensitive member, the sensitivity of the sensitive member to the heat exchange medium is greater than that to the environmental medium, and the sensitive member is arranged to be actuated by the heat exchange medium, so that the discharge assembly forms a discharge channel communicating the inside and outside of the box body.

[0063] The sensitive member of the battery device of the present application has a greater sensitivity to the heat exchange medium than to the environmental medium. When the sensitive member encounters the heat exchange medium, it can be triggered and actuated to make the discharge assembly form a discharge channel communicating the inside and outside of the box body. In this way, when the heat exchange medium of the heat exchange assembly leaks, the heat exchange medium can be discharged in a relatively timely manner, reducing the damage of the heat exchange medium to the battery device; at the same time, when environmental media such as condensed water or external water vapor in the environment act on the sensitive member, the sensitive member is not easily triggered and actuated, and the discharge assembly can maintain a sealed state, reducing the possibility of the discharge assembly being mis-triggered by environmental media, improving the reliability of the battery device, reducing the possibility of the battery device being mis-repaired, reducing the maintenance cost of the battery device, and improving the user experience.

[0064] The battery device disclosed in the embodiments of the present application is applicable to various electrical equipment using battery devices, and a power system of the electrical equipment can be composed of battery devices disclosed in the present application. The electrical equipment can be a mobile phone, a portable device, a laptop computer, a battery car, an electric toy, an electric tool, a vehicle, a ship, and a spacecraft, etc. Among them, the electric toy can include fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys, etc., and the spacecraft can include airplanes, rockets, space shuttles, and spaceships, etc.

[0065] For the convenience of description, the following embodiments take a vehicle, which is an electrical equipment in an embodiment of the present application, as an example for description.

[0066] Please refer to Figure 1 , Figure 1Schematic structural diagram of a vehicle provided by some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery device 10 is provided inside the vehicle 1000. The battery device 10 can be arranged at the bottom, the head, or the tail of the vehicle 1000. The battery device 10 can be used to supply power to the vehicle 1000. For example, the battery device 10 can serve as the operating power source of the vehicle 1000. The vehicle 1000 can also include a controller 20 and a motor 30. The controller 20 is used to control the battery device 10 to supply power to the motor 30. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0067] In some embodiments of the present application, the battery device 10 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0068] As shown in Figure 2 the figure, Figure 2 Schematic structural diagram of a battery device proposed by some embodiments of the present application. The battery device 10 mentioned in the embodiments of the present application may include one or more battery cell assemblies 200 for providing voltage and capacity. The battery cell assembly 200 may include one or more battery cells 210. The multiple battery cells 210 are connected in series, parallel, or in a hybrid connection through a busbar component.

[0069] In some embodiments, the battery cell assembly 200 is usually formed by arranging multiple battery cells 210.

[0070] As an example, the battery cell assembly 200 can be a battery module. The battery module is formed by arranging and fixing multiple battery cells 210 into an independent module. As an example, the battery module can be formed by bundling multiple battery cells 210 with cable ties.

[0071] In some embodiments, the battery device 10 can be a battery pack. The battery pack includes a box body 100 and one or more battery cell assemblies 200. The battery cell assemblies 200 are accommodated in the box body 100.

[0072] As an example, the battery cell assembly 200 can be a battery module. The battery cell assembly 200 can be accommodated in the box body 100 by fixing the battery module in the box body 100.

[0073] As an example, the battery cell assembly 200 can also be accommodated in the box body 100 by directly fixing multiple battery cells 210 to the box body 100.

[0074] As an example, the housing 100 may include a first housing 101 and a second housing 102. The first housing 101 and the second housing 102 are snapped together so that a closed space is formed inside the housing 100 to accommodate the battery cell assembly 200. Here, "closed" means covered or closed, which can be sealed or non-sealed. The first housing 101 can be a top cover or a bottom plate.

[0075] As an example, the housing 100 may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame so that a closed space is formed inside the housing 100 to accommodate the battery cell assembly 200.

[0076] In some embodiments, the housing 100 can be part of the chassis structure of the vehicle 1000. For example, part of the housing 100 can become at least part of the floor of the vehicle 1000, or part of the housing 100 can become at least part of the cross beams and longitudinal beams of the vehicle 1000.

[0077] In some embodiments, the battery device 10 refers to an energy storage device, and the energy storage device includes a cabinet body, and a door is provided on at least one side of the cabinet body. The energy storage device includes an energy storage container, an energy storage electric cabinet, etc.

[0078] In the embodiments of the present application, the battery cell 210 can be a secondary battery, and a secondary battery refers to a battery cell 210 that can be activated by charging after the battery cell 210 discharges and can be used continuously.

[0079] The battery cell 210 can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0080] As Figure 3 shown, Figure 3 is a split schematic diagram of a battery cell proposed in some embodiments of the present application. The battery cell 210 generally includes an electrode assembly 211. The electrode assembly 211 includes a positive electrode, a negative electrode, and a separator, and the separator is disposed between the negative electrode and the positive electrode. During the charging and discharging process of the battery cell 210, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the positive and negative electrodes from short-circuiting, and at the same time allow active ions to pass through.

[0081] In some embodiments, the electrode assembly 211 is provided with tabs 215, and the tabs 215 can conduct current out of the electrode assembly 211. The tabs 215 include a positive tab 215 and a negative tab 215.

[0082] In some embodiments, the battery cell 210 may include a housing 212. The housing 212 may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite housing), or an aluminum plastic film, etc. In some embodiments, the housing 212 may be a sealed structure or a non-sealed structure. As an example, when the housing 212 is a non-sealed structure, the housing 212 functions to protect the electrode assembly 211, and a sealed bag is further included between the housing 212 and the electrode assembly 211, and the sealed bag is used to encapsulate the electrode assembly 211 and the electrolyte. Specifically, the sealed bag may be a bag-shaped insulating member or an aluminum plastic film. When the housing 212 is a sealed structure, it is used to encapsulate components such as the electrode assembly 211 and the electrolyte.

[0083] As an example, the battery cell 210 may be a cylindrical battery cell 210, a prismatic battery cell 210, a pouch battery cell 210, or a battery cell 210 of other shapes. The prismatic battery cell 210 includes a square shell battery cell 210, a blade-shaped battery cell 210, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc. There is no special limitation in this application.

[0084] In some embodiments, the housing 212 includes an end cap 214 and a housing body 213. The housing body 213 is provided with an opening, and the end cap 214 covers the opening. The housing body 213 may be provided with one or more openings. One or more end caps 214 may also be provided.

[0085] In some embodiments, at least one electrode terminal 216 is provided on the housing 212, and the electrode terminal 216 is electrically connected to the tab 215. The electrode terminal 216 may be directly connected to the tab 215 or indirectly connected to the tab 215 through a current collecting member. The electrode terminal 216 may be provided on the end cap 214 or on the housing body 213.

[0086] Such as Figure 2 and Figure 3 , and in combination with Figures 4 to 8 shown, Figure 4 is a partial structural schematic diagram of the box body of the battery device proposed in some embodiments of this application, Figure 5 is a cross-sectional schematic diagram of the emission assembly assembled on the first wall proposed in some embodiments of this application, Figure 6 is a partial structural schematic diagram of the emission assembly proposed in some embodiments of this application, Figure 7 is a cross-sectional schematic diagram (a cross-sectional view parallel to the axial direction X of the emission assembly) of the sensitive component of the emission assembly being triggered and actuated proposed in some embodiments of this application, Figure 8Cross-sectional schematic view of the emission component proposed in some embodiments of the present application (cross-sectional view perpendicular to the axial direction X of the emission component); Embodiments of the present application provide a battery device 10, including a box body 100, battery cells 210, a heat exchange component 300, and an emission component 400. The box body 100 has a first wall 103, and the battery cells 210 are arranged inside the box body 100; The heat exchange component 300 is provided with a heat exchange channel for the heat exchange medium to flow through. The heat exchange component 300 is arranged in the box body 100 for adjusting the temperature of the battery cells 210; The emission component 400 is hermetically arranged on the first wall 103. The emission component 400 includes a sensitive member 410. The sensitive member 410 is more sensitive to the heat exchange medium than to the ambient medium, and the sensitive member 410 is arranged to be actuated by the heat exchange medium, so that the emission component 400 forms an emission channel 401 communicating the inside and outside of the box body 100.

[0087] Among them, the heat exchange medium and the ambient medium are different media. The heat exchange medium may contain a sensitive substance sensitive to the sensitive member 410, and the ambient medium generally does not contain sensitive substances.

[0088] The first wall 103 is one of the walls of the box body 100. In actual design, the first wall 103 may be the bottom wall of the box body 100, so that the heat exchange medium can be smoothly and timely discharged through the emission component 400 on the first wall 103.

[0089] The heat exchange component 300 is used to adjust the temperature of the battery cells 210. It is provided with a heat exchange channel for the heat exchange medium to flow through. When the heat exchange medium flows through the heat exchange channel, heat exchange can be carried out between the heat exchange component 300 and the battery cells 210 to adjust the temperature of the battery cells 210. The heat exchange component 300 may be provided with one or more medium inlets and medium outlets.

[0090] The heat exchange component 300 may be a structure independently processed and assembled into the box body 100, and it is usually arranged inside the box body 100. The heat exchange component 300 may also be a structure formed by the wall of the box body 100 itself with a heat exchange channel.

[0091] Exemplarily, the heat exchange component 300 may be arranged on the bottom wall of the box body 100 and located on the bottom side of the battery cells 210.

[0092] The heat exchange medium is set to be flowable and can be set as a liquid. The sensitive substance in the heat exchange medium is a substance that can trigger the sensor 410. The sensitive substance is usually a substance that is not easily present in the environment where the battery device 10 is located. The sensitive substance can be a substance originally present in the heat exchange medium. For example, the sensitive substance can be an antifreeze in the heat exchange medium. Based on the difference between the characteristics of the heat exchange medium with antifreeze and the characteristics of water (environmental medium), the sensor 410 can select a structural component that is sensitive to the heat exchange medium (heat exchange medium with antifreeze). The sensitive substance can also be a substance added additionally to the conventional heat exchange medium. That is to say, based on the requirement of characteristic matching between the sensitive substance and the sensor 410, the sensitive substance is added additionally to the conventional heat exchange medium to form the heat exchange medium required in this embodiment.

[0093] The environmental medium refers to the substance in the environment where the battery device 10 (or battery cell 210) is located. The environment where the battery device 10 is located is usually the natural atmospheric environment, and its environmental substances can include water (moisture in humid air or condensed water, etc.), air, etc.

[0094] Exemplarily, the heat exchange component 300 can be a liquid cooling plate, and the heat exchange medium in the liquid cooling plate can be an aqueous solution with antifreeze. The inlet 444 and outlet of the liquid cooling plate can be connected to the liquid cooling unit, and the liquid cooling unit provides the heat exchange medium for adjusting the temperature of the battery cell 210 to the liquid cooling plate through a pipeline.

[0095] The discharge component 400 is used to discharge the heat exchange medium in the box body 100 to the outside of the box body 100 when the heat exchange medium leaks. When the sensor 410 is in a normal untriggered state, the discharge component 400 is in a closed state (the closed state means the state where the discharge channel 401 is blocked); when the sensor 410 is triggered and actuated, the discharge component 400 is in an open state (the open state means the state where the discharge channel 401 communicates the inside and outside of the box body 100). The discharge component 400 can only have the sensor 410, and the sensor 410 is connected to the first wall 103. For example, a communication hole 104 penetrating the inside and outside of the box body 100 is provided on the first wall 103, and the sensor 410 blocks the communication hole 104 and is connected to the wall portion of the first wall 103 surrounding the communication hole 104. The discharge component 400 can also be set to have other structures such as a valve body 440, and the sensor 410 can be used in cooperation with the valve body 440.

[0096] The discharge assembly 400 is hermetically disposed on the first wall 103. It can be understood that when the sensitive component 410 is not triggered and actuated, the discharge assembly 400 is in a sealed closed state. Among them, the first wall 103 may be provided with a communication hole 104. When the sensitive component 410 is not triggered and actuated, the discharge assembly 400 blocks the communication hole 104 so that the discharge assembly 400 is hermetically disposed on the first wall 103. A relatively sealed state may also be set between the first wall 103 and the discharge assembly 400 to improve the sealing performance of the box body 100.

[0097] Exemplarily, the discharge assembly 400 may block one end of the communication hole 104 facing the inside of the box body 100 or the end facing the outside of the box body 100. When the sensitive component 410 is in a triggered and actuated state, the discharge channel 401 of the discharge assembly 400 communicates with the communication hole 104 to communicate the inside and outside of the box body 100.

[0098] Exemplarily, the discharge assembly 400 may block the communication hole 104. When the sensitive component 410 is in a triggered and actuated state, the discharge channel 401 of the discharge assembly 400 makes the communication hole 104 at least partially communicate to communicate the inside and outside of the box body 100.

[0099] The sensitivity of the sensitive component 410 can be understood as the possibility that when the sensitive component 410 is acted on by a certain medium (such as a heat exchange medium or an environmental medium), due to the action of the medium, the sensitive component 410 undergoes physical or chemical changes, and these changes can cause the sensitive component 410 to be triggered and actuated.

[0100] The sensitivity of the sensitive component 410 to the heat exchange medium (under the condition of no special explanation, the heat exchange medium involved in this embodiment refers to the heat exchange medium containing sensitive substances) is greater than that to the environmental medium. It can be understood that in the same environment (usually the conventional use environment where the battery device 10 is located), the heat exchange medium is more likely to trigger the sensitive component 410 to be triggered and actuated than the environmental medium. The sensitive component 410 may be set such that in the conventional use environment where the battery device 10 is located, when the environmental medium acts on the sensitive component 410, it usually does not cause the sensitive component 410 to be triggered and actuated, or the influence of the environmental medium on the sensitive component 410 can be ignored; while when the heat exchange medium acts on the sensitive component 410 and reaches a preset condition, for example, the amount of the heat exchange medium reaches a certain requirement, the sensitive component 410 will be triggered and actuated.

[0101] Exemplarily, the sensitive component 410 may be disposed on the path where the discharge channel 401 of the discharge assembly 400 is formed. When the sensitive component 410 is in an untriggered and unactuated state, the discharge channel 401 of the discharge assembly 400 is sealed by the sensitive component 410, blocking the communication between the inside and outside of the box body 100; when the sensitive component 410 is triggered and actuated, at least part of the sensitive component 410 is damaged, making the discharge channel 401 communicate the inside and outside of the box body 100.

[0102] Exemplarily, the discharge assembly 400 may have a valve control assembly, such as an electromagnetic valve, etc. The triggering actuation of the sensing member 410 can serve as a control element of the valve control assembly. The triggering actuation of the sensing member 410 controls the valve control assembly to act, causing the discharge assembly 400 to open and thus forming a discharge channel 401.

[0103] The "triggering actuation" mentioned in this application refers to the sensing member 410 generating an action or being activated to a certain state, thereby causing the discharge assembly 400 to form a discharge channel 401 communicating the inside and outside of the box body 100. The actions generated by the sensing member 410 may include, but are not limited to: the components in the sensing member 410 moving to form the discharge channel 401 of the discharge assembly 400, at least a part of the sensing member 410 breaking, shattering, being torn or opened, etc. When the sensing member 410 is triggered and actuated, the heat exchange medium in the box body 100 can be discharged through the discharge channel 401. In this way, the heat exchange medium can be discharged in time, reducing the impact of the heat exchange medium on the battery cell 210.

[0104] In this embodiment, the sensitivity of the sensing member 410 of the battery device 10 to the heat exchange medium is greater than that to the environmental medium. When the sensing member 410 encounters the heat exchange medium, it can be triggered and actuated to cause the discharge assembly 400 to form a discharge channel 401 communicating the inside and outside of the box body 100. In this way, when the heat exchange medium of the heat exchange assembly 300 leaks, the heat exchange medium can be discharged more timely, reducing the damage of the heat exchange medium to the battery device 10; at the same time, when environmental media such as condensed water or external water vapor in the environment act on the sensing member 410, the sensing member 410 is not easily triggered and actuated, and the discharge assembly 400 can maintain a sealed state, reducing the possibility of the discharge assembly 400 being accidentally triggered by the environmental medium, improving the reliability of the battery device 10, reducing the possibility of the battery device 10 being accidentally repaired, reducing the maintenance cost of the battery device 10, and improving the user experience.

[0105] According to some embodiments of the present application, optionally, the tolerance of the sensing member 410 to the heat exchange medium is weaker than that to the environmental medium.

[0106] The tolerance of the medium is a manifestation of the sensitivity.

[0107] "Tolerance" refers to the ability of the sensing member 410 to resist the action of the medium without obvious deformation or damage. Tolerance can be understood as one of the sensitivities. Weaker tolerance means higher sensitivity, and stronger tolerance means lower sensitivity.

[0108] Exemplarily, the sensing member 410 is set such that its corrosion resistance to the heat exchange medium is weaker than its corrosion resistance to the environmental medium, and the sensing member 410 is more easily corroded by the heat exchange medium and thus damaged or its strength is reduced.

[0109] Exemplarily, the sensitive component 410 is configured to have a greater absorption capacity for the heat exchange medium than for the ambient medium. The sensitive component 410 is more likely to absorb the heat exchange medium and expand, resulting in damage or reduced strength.

[0110] The resistance of the sensitive component 410 to the heat exchange medium is weaker than that to the ambient medium. Thus, when the sensitive component 410 contacts the heat exchange medium and is acted upon by the heat exchange medium, the sensitive component 410 is easily damaged or significantly deformed to trigger actuation. However, when the sensitive component 410 contacts the ambient medium and is acted upon by the ambient medium, the sensitive component 410 is not easily damaged or significantly deformed to trigger actuation, thereby reducing the possibility of the discharge assembly 400 being mistakenly triggered by the ambient medium, improving the reliability of the battery device 10, reducing the possibility of the battery device 10 being mistakenly returned for repair, reducing the maintenance cost of the battery device 10, and improving the user experience.

[0111] According to some embodiments of the present application, optionally, the sensitive component 410 is configured to have a swelling ability to the ambient medium that is weaker than its swelling ability to the heat exchange medium.

[0112] Swelling refers to the phenomenon that the volume of the sensitive component 410 increases after absorbing liquid or gas medium. The stronger the swelling ability, the easier it is for the sensitive component 410 to increase in volume; the weaker the swelling ability, the less likely it is for the sensitive component 410 to increase in volume. Swelling ability is one of the manifestations of tolerance. The stronger the swelling ability, the weaker the tolerance, and the weaker the swelling ability, the stronger the tolerance.

[0113] Exemplarily, the environmental medium may be water (condensed water in the environment, etc., which may contain a small amount of impurities or no impurities, and can be understood as pure water), which is usually a weakly polar or non-polar substance; the heat exchange medium may be a solution with a polar substance (polar substances may be antifreeze, such as ethylene glycol, propylene glycol, etc.), and the sensitive component 410 may be set to a material that is sensitive to polar molecules, such as nitrile rubber, chloroprene rubber, polyvinyl alcohol and other high molecular organic materials. The polarity of the sensitive component 410 is good, and its swelling ability with pure water is weak. When the sensitive component 410 contacts the heat exchange medium, it is easier to swell due to the action of the polar molecules of the polar substance.

[0114] The swelling ability of the sensitive component 410 with respect to the environmental medium is less than that with respect to the heat exchange medium. In this way, when the sensitive component 410 contacts the heat exchange medium and is affected by the heat exchange medium, the sensitive component 410 easily absorbs the heat exchange medium and causes an increase in volume, thereby being triggered to actuate. When the sensitive component 410 contacts the environmental medium and is affected by the environmental medium, the sensitive component 410 is not likely to absorb the environmental medium, the amount of environmental medium absorbed by the sensitive component 410 is small, and the sensitive component 410 is not likely to increase in volume and be triggered to actuate, reducing the possibility of the emission assembly 400 being accidentally triggered by the environmental medium, improving the reliability of the battery device 10, reducing the possibility of the battery device 10 being accidentally repaired, reducing the maintenance cost of the battery device 10, and improving the user experience.

[0115] According to some embodiments of the present application, optionally, the material of the sensitive component 410 is nitrile rubber; and / or, the heat exchange medium is a liquid containing an antifreeze agent, and the environmental medium is water.

[0116] Among them, the heat exchange medium can be an aqueous solution with an antifreeze agent. The antifreeze agent can be ethylene glycol, etc.

[0117] That the material of the sensitive component 410 is nitrile rubber can be understood as that the main substance component of the sensitive component 410 is nitrile rubber, and it is not required that all of its substance components are nitrile rubber. That is to say, the sensitive component 410 can be processed with nitrile rubber as the main material, and other substances can also be contained therein.

[0118] The swelling ability of the sensitive component 410 made of nitrile rubber with respect to water is less than that with respect to the antifreeze solution (heat exchange medium). In this way, when the sensitive component 410 contacts the heat exchange medium and is affected by the heat exchange medium, the sensitive component 410 easily absorbs the heat exchange medium and causes an increase in volume, thereby being triggered to actuate. When the sensitive component 410 contacts the water in the environment and is affected by the water, the sensitive component 410 is not likely to absorb water, and the sensitive component 410 is not likely to increase in volume and be triggered to actuate, reducing the possibility of the emission assembly 400 being accidentally triggered by the water in the environment, improving the reliability of the battery device 10, reducing the possibility of the battery device 10 being accidentally repaired, reducing the maintenance cost of the battery device 10, and improving the user experience.

[0119] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the sensitive component 410 is arranged to block the emission channel 401. The form in which the sensitive component 410 is triggered to actuate includes at least partially being damaged to form a through hole 413, and when the sensitive component 410 is in the triggered actuation state, the through hole 413 communicates the inside and outside of the box body 100.

[0120] The form in which the sensitive component 410 is triggered to actuate includes at least partially being damaged to form a through hole 413, which can be understood as that the sensitive component 410 can be triggered to actuate by the heat exchange medium and at least partially be damaged to form a through hole 413.

[0121] The sensitive component 410 can be disposed on the discharge path of the discharge channel 401. When the sensitive component 410 is in a normal untriggered state, the sensitive component 410 blocks the discharge channel 401, and the discharge assembly 400 is in a closed state; when the sensitive component 410 is triggered and actuated, at least part of the sensitive component 410 ruptures to form a through hole 413, and the through hole 413 connects the inside and outside of the box body 100 through the discharge channel 401.

[0122] Exemplarily, a communication hole 104 penetrating the inside and outside of the box body 100 is provided on the first wall 103. The sensitive component 410 blocks the communication hole 104 and is connected to the wall portion surrounding the communication hole 104 on the first wall 103. When the sensitive component 410 is in a normal untriggered state, the sensitive component 410 blocks the communication hole 104, and the discharge assembly 400 is in a closed state; when the sensitive component 410 is triggered and actuated, at least part of the sensitive component 410 ruptures to form a through hole 413 (the through hole 413 is equivalent to the discharge channel 401 of the discharge assembly 400), the through hole 413 communicates with the communication hole 104, and the ruptured portion 414 is discharged outside the box body 100, and the heat exchange medium can be discharged from the box body 100 along the through hole 413 and the communication hole 104.

[0123] Exemplarily, the discharge assembly 400 may further include a valve body 440. A communication hole 104 penetrating the inside and outside of the box body 100 is provided on the first wall 103. The valve body 440 is installed in the communication hole 104. A valve hole 443 is formed in the valve body 440, and the valve hole 443 forms the discharge channel 401. The sensitive component 410 is connected to the valve body 440. When the sensitive component 410 is in a normal untriggered state, the sensitive component 410 blocks the valve body 440, and the discharge assembly 400 is in a closed state; when the sensitive component 410 is triggered and actuated, at least part of the sensitive component 410 ruptures to form a through hole 413, and the through hole 413 communicates with the valve hole 443 in the valve body 440, and the heat exchange medium can be discharged from the box body 100 along the through hole 413 and the valve hole 443 in the valve body 440.

[0124] The sensitive component 410 is set to block the discharge channel 401 and is triggered and actuated by being damaged to connect the discharge channel 401. The structure is simple, and the current state of the discharge assembly 400 can be obtained intuitively.

[0125] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the discharge assembly 400 further includes an auxiliary actuating member 420. The auxiliary actuating member 420 is configured to apply a force to the sensitive component 410 to cause the sensitive component 410 to be triggered and actuated by the heat exchange medium.

[0126] The auxiliary actuating member 420 is used to assist the sensitive component 410 to be triggered and actuated after the sensitive component 410 contacts the heat exchange medium and is affected by the heat exchange medium. The auxiliary actuating member 420 can apply a pressure or a pulling force to the sensitive component 410.

[0127] In the case of not contacting the heat exchange medium conventionally, the auxiliary actuator 420 can be set not to apply a force to the sensitive member 410. After the sensitive member 410 contacts the heat exchange medium and is affected by the heat exchange medium, or the force applied by the auxiliary actuator 420 to the sensitive member 410, but the sensitive member 410 can withstand this force without being triggered to actuate. After the sensitive member 410 contacts the heat exchange medium and is affected by the heat exchange medium, for example, after absorbing the heat exchange medium, the sensitive member 410 will receive the force applied by the auxiliary actuator 420, and the sensitive member 410 is triggered to actuate because it cannot withstand this force.

[0128] Exemplarily, the auxiliary actuator 420 can press against the sensitive member 410 and apply a pressure to the sensitive member 410. In the normal state, the strength of the sensitive member 410 itself can withstand the force applied by the auxiliary actuator 420, and the sensitive member 410 is in a non-triggered actuation state. After the sensitive member 410 contacts the heat exchange medium and absorbs the heat exchange medium and swells, the strength of the sensitive member 410 itself decreases, and the strength of the sensitive member 410 itself is not sufficient to withstand the force applied by the auxiliary actuator 420, and the sensitive member 410 is triggered to actuate.

[0129] By setting the auxiliary actuator 420, the convenience of triggering the actuation of the sensitive member 410 by the heat exchange medium can be improved, so that the sensitive member 410 can be triggered to actuate by the heat exchange medium in a timely manner, and the discharge assembly 400 is opened, improving the timeliness of heat exchange medium discharge and reducing the damage to the battery device 10 caused by heat exchange medium leakage.

[0130] According to some embodiments of the present application, optionally, as Figure 5 and Figure 7 shown, the auxiliary actuator 420 includes an elastic member 421, and the elastic member 421 is arranged to apply an elastic force to the sensitive member 410.

[0131] The elastic member 421 can be a spring, a spring sheet, or elastic rubber, elastic ribs, etc.

[0132] The elastic member 421 provides an elastic tensile force or an elastic pressure through elastic deformation, so that the sensitive member 410 receives the action of the tensile force or the pressure.

[0133] The auxiliary actuator 420 can be directly in contact with or connected to the sensitive member 410 through the elastic member 421. The auxiliary actuator 420 can also include other structures (such as an actuating component 422), and the elastic member 421 (such as the actuating component 422) applies a force to the sensitive member 410 through other structures.

[0134] The elastic member 421 can undergo elastic deformation and apply a force to the sensitive member 410 through the elastic deformation, which improves the convenience and applicability of the setting of the auxiliary actuating member 420. Moreover, by adjusting the amount of deformation of the elastic member 421, the force applied to the sensitive member 410 can be adjusted, so that the force borne by the sensitive member 410 is within a relatively reasonable range, which improves the accuracy of the sensitive member 410 being triggered and actuated, and reduces the possibility that the sensitive member 410 is triggered and actuated when the heat exchange medium has not leaked due to excessive force, resulting in the loss of the sealing function. It also reduces the possibility that the sensitive member 410 is difficult to be triggered and actuated and difficult to discharge the heat exchange medium when the heat exchange medium leaks due to too small a force.

[0135] According to some embodiments of the present application, optionally, as Figure 5 and Figure 6 shown, the auxiliary actuating member 420 presses against the sensitive member 410.

[0136] The auxiliary actuating member 420 can contact the sensitive member 410 and press against one side of the sensitive member 410.

[0137] The auxiliary actuating member 420 pressing against the sensitive member 410 can apply pressure to the sensitive member 410. The structure is simple and can improve the setting stability of the sensitive member 410.

[0138] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the discharge assembly 400 further includes a shielding member 430. The shielding member 430 is provided with a communication port 433. The communication port 433 is set to communicate with the discharge channel 401. The shielding member 430 is disposed on the side of the sensitive member 410 facing away from the interior of the box body 100.

[0139] The shielding member 430 can be connected to the first wall 103. The shielding member 430 can be a plate member or a cover body, etc. The communication port 433 of the shielding member 430 is used to communicate with the discharge channel 401. After the heat exchange medium leaked in the box body 100 passes through the discharge channel 401, it flows out of the box body 100 from the communication port 433.

[0140] The shielding member 430 can play a role in shielding and protecting the sensitive member 410, reducing the possibility of the external member impacting or corroding the sensitive member 410, and improving the reliability of the sensitive member 410.

[0141] According to some embodiments of the present application, optionally, as Figures 5 to 8 shown, the discharge assembly 400 further includes a valve body 440. The valve body 440 is installed on the first wall 103. The valve body 440 is provided with a valve hole 443. The valve hole 443 communicates with the interior of the box body 100. The sensitive member 410 is set to block the valve hole 443. The sensitive member 410 can be triggered and actuated by the heat exchange medium to open the valve hole 443, thereby forming the discharge channel 401.

[0142] The valve body 440 can be directly fixed to the first wall 103 or indirectly installed on the first wall 103 through the valve seat 450. A communication hole 104 can be provided in the first wall 103 corresponding to the valve body 440, and the valve body 440 can be installed in the communication hole 104.

[0143] The sensitive member 410 can block one end of the valve hole 443 facing the inside of the box body 100, or can block one end of the valve hole 443 facing the outside of the box body 100, or can block between the two ends of the valve hole 443. The axial direction X of the valve hole 443 (i.e., the flow direction of the heat exchange medium in the valve hole 443) can be set substantially perpendicular to the first wall 103.

[0144] The sensitive member 410 is triggered by the heat exchange medium to actuate and open the valve hole 443, which means that after the sensitive member 410 is triggered and actuated, the valve hole 443 communicates the inside and outside of the box body 100. Exemplarily, the sensitive member 410 can be set to be at least partially damaged to form a through hole 413, so as to open the valve hole 443.

[0145] By providing the valve body 440, the sensitive member 410 can be assembled with the valve body 440 as a whole, and the discharge assembly 400 can be assembled with the first wall 103 through the valve body 440, which improves the connection convenience and assembly reliability between the discharge assembly 400 and the first wall 103.

[0146] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the discharge assembly 400 further includes an auxiliary actuating member 420. The auxiliary actuating member 420 includes an elastic member 421 and an actuating component 422. The elastic member 421 is arranged between the valve body 440 and the actuating component 422. The elastic member 421 is in an elastic deformation state and applies an elastic force to the actuating component 422, so that the actuating component 422 acts on the sensitive member 410.

[0147] The actuating component 422 can be a plate member, a block member, etc. The actuating component 422 acting on the sensitive member 410 can be understood as that the sensitive member 410 is restricted by the actuating component 422 and can transmit a force to the sensitive member 410. The form of the sensitive member 410 being restricted by the actuating component 422 can include the actuating component 422 being in pressing contact with or connected to the sensitive member 410.

[0148] The elastic member 421 applies a force to the sensitive member 410 through the actuating component 422.

[0149] Exemplarily, the actuating component 422 can be pressed against the sensitive member 410 under the elastic force of the elastic member 421 and apply a pressure to the sensitive member 410.

[0150] Exemplarily, the actuating component 422 can be a spring ( Figures 5 to 7The middle part of the middle spring is omitted), the spring is set as a compression spring, one end of the spring is connected to the valve body 440, the other end of the spring is connected to the actuating component 422, the spring is in a compressed state, and the actuating component 422 presses against the sensitive component 410 under the pressure of the spring. Optionally, the spring can also be a tension spring, the tension spring is in a stretched state, and a pressure is applied to the actuating component 422 based on the tensile force, so that the actuating component 422 presses against the sensitive component 410.

[0151] The auxiliary actuating component 420, the valve body 440 and the sensitive component 410 are assembled and fixed to each other, and the structure is simple. Among them, the elastic component 421 can undergo elastic deformation and apply a force to the sensitive component 410 through the elastic deformation, which improves the convenience and applicability of the setting of the auxiliary actuating component 420. Moreover, by adjusting the deformation amount of the elastic component 421, the force applied to the sensitive component 410 can be adjusted, so that the force borne by the sensitive component 410 is within a relatively reasonable range, which improves the accuracy of the sensitive component 410 being triggered and actuated; it reduces the possibility that the sensitive component 410 is triggered and actuated and loses the sealing function when the heat exchange medium has not leaked due to too large a force, and also reduces the possibility that the sensitive component 410 is difficult to be triggered and actuated and difficult to discharge the heat exchange medium when the heat exchange medium leaks due to too small a force.

[0152] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the actuating component 422 is arranged to be movable relative to the valve body 440 along the deformation direction of the elastic component 421.

[0153] The actuating component 422 is arranged to be movable relative to the valve body 440 along the deformation direction of the elastic component 421, which means that the actuating component 422 can move and change the deformation amount of the elastic component 421. Exemplarily, as Figures 5 to 7 shown, the actuating component 422 can move along the telescopic direction of the spring.

[0154] The actuating component 422 can move along the deformation direction of the elastic component 421, so that an elastic contact is formed between the actuating component 422 and the sensitive component 410. When the volume of the sensitive component 410 changes, the actuating component 422 can move along the deformation direction of the elastic component 421 and always keep in contact or connection with the sensitive component 410, which improves the adaptability of the auxiliary actuating component 420; at the same time, under the action of the elastic component 421, the auxiliary actuating component 420 has a buffering performance, which reduces the possibility of the auxiliary actuating component 420 damaging the sensitive component 410 in the normal state.

[0155] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, a guiding component 445 is arranged on the valve body 440, and the actuating component 422 is connected to the guiding component 445 and arranged to be in sliding fit.

[0156] The guiding member 445 can be fixedly relative to the valve body 440. Exemplarily, the guiding member 445 and the valve body 440 can be an integral structure. The guiding member 445 can be arranged along the deformation direction of the elastic member 421. Exemplarily, the guiding member 445 can be arranged along the compression direction of the spring.

[0157] A sliding fit is provided between the guiding member 445 and the actuating member 422 so that the actuating member 422 can move along the elastic deformation direction of the elastic member 421. Exemplarily, one of the guiding member 445 and the actuating member 422 can be provided with a sliding groove, and the other is provided as a sliding block. The guiding member 445 and the actuating member 422 achieve a sliding fit through the cooperation of the sliding groove and the sliding block.

[0158] By providing the guiding member 445, the directivity of the movement of the actuating member 422 relative to the valve body 440 can be improved, thereby improving the reliability of the discharge assembly 400.

[0159] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the actuating member 422 is provided with a receiving groove 4221 having an opening. One end of the guiding member 445 is inserted into the receiving groove 4221 and can slide within the receiving groove 4221. The elastic member 421 is disposed in the receiving groove 4221 and is constrained by the guiding member 445.

[0160] The actuating member 422 can be generally a tubular structure with one end open. One end of the guiding member 445 extends into the receiving groove 4221 of the actuating member 422. The opening of the receiving groove 4221 can match the size of the guiding member 445. In this way, the receiving groove 4221 can limit the movement of the guiding member 445 along the direction perpendicular to the extending direction of the guiding member 445, so that the actuating member 422 retains only the degree of freedom along the extending direction of the guiding member 445 relative to the guiding member 445, playing a guiding role.

[0161] That the elastic member 421 is constrained by the guiding member 445 can be understood as that the elastic member 421 is pressed or connected by the guiding member 445 to limit the movement of one end of the elastic member 421. That is to say, under the constraint of the guiding member 445, one end of the elastic member 421 remains relatively fixed with the guiding member 445. When the other end of the elastic member 421 moves, the deformation amount of the elastic member 421 can be changed.

[0162] Exemplarily, the elastic member 421 can be a spring. The spring is located in the receiving groove 4221. One end of the spring can be in pressing fit with the end of the guiding member 445 inserted into the receiving groove 4221, and the other end of the spring is in pressing fit with the bottom wall of the receiving groove 4221. Under the interaction of the guiding member 445 and the bottom wall of the receiving groove 4221, the spring is in a compressed state; when the actuating member 422 moves along the guiding member 445, the compression amount of the spring can be changed.

[0163] The actuating member 422 is provided with a receiving groove 4221. The spring is disposed within the receiving groove 4221. The receiving groove 4221 can protect and guide the spring, improving the reliability during the deformation process of the spring. Moreover, by inserting the guiding member 445 into the receiving groove 4221 to restrain the elastic member 421, during the assembly process, by adjusting the amount of insertion of the guiding member 445 into the receiving groove 4221, the compression amount of the elastic member 421 can be adjusted, thereby adjusting the acting force exerted by the auxiliary actuating member 420 on the sensitive member 410.

[0164] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, both the elastic member 421 and the actuating member 422 are disposed within the valve hole 443.

[0165] The guiding member 445, the actuating member 422, and the elastic member 421 can all be disposed within the valve hole 443.

[0166] The actuating member 422 and the elastic member 421 can be shielded and protected by the valve member, with a simple structure and high reliability.

[0167] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the valve body 440 has a first end 441 and a second end 442 disposed oppositely. The first end 441 is closer to the interior of the box body 100 than the second end 442, and the sensitive member 410 is blocked at the second end 442.

[0168] The first end 441 and the second end 442 are two ends of the valve body 440 along the axial direction of the valve body 440 (i.e., the flow direction of the heat exchange medium within the discharge channel 401). The first end 441 can be generally understood as the end of the valve body 440 facing the interior of the box body 100, and the second end 442 can be generally understood as the end of the valve body 440 facing the exterior of the box body 100.

[0169] An inlet 444 can be provided on the end face of the first end 441 of the valve body 440 or on the side wall of the valve body 440 that encloses to form the valve hole 443 (the circumferential side wall between the first end 441 and the second end 442). The inlet 444 communicates the interior of the box body 100 and the valve hole 443. When there is a leakage of the heat exchange medium within the box body 100, the heat exchange medium can enter the valve hole 443 from the inlet 444 and come into contact with and interact with the sensitive member 410 at the second end 442.

[0170] The sensitive member 410 is disposed at one end of the valve body 440 close to the outside of the box body 100 (i.e., the second end 442). In this way, the heat exchange medium entering the valve hole 443 can better come into contact with the sensitive member 410 and trigger the actuation of the sensitive member 410, improving the reliability and timeliness of the triggering and actuation of the sensitive member 410 by the heat exchange medium.

[0171] According to some embodiments of the present application, optionally, as Figures 5 to 8 shown, the first end 441 is arranged as a sealed structure, and an inlet 444 is arranged on the side wall of the valve body 440 surrounding the valve hole 443. The inlet 444 communicates the valve hole 443 with the interior of the box body 100.

[0172] The first end 441 may be located inside the box body 100. The side wall of the valve body 440 provided with the inlet 444 may also be arranged inside the box body 100 to facilitate the communication between the inlet 444 and the interior of the box body 100. One or more inlets 444 may be provided. Exemplarily, a plurality of inlets 444 may be arranged at intervals on the side wall of the valve body 440 along the circumferential direction.

[0173] The lower edge of the inlet 444 of the valve body 440 may be lower than or flush with the inner bottom surface of the box body 100, so as to facilitate the heat exchange medium leaked inside the box body 100 to flow into the valve hole 443 in time.

[0174] The inlet 444 of the valve body 440 is arranged on the side wall of the valve body 440, and the first end 441 is arranged as a sealed structure, reducing the possibility of dust and other sundries entering the valve hole 443 from the first end 441; at the same time, the inlet 444 of the valve body 440 may cover at least a part of the area along the circumferential direction of the valve body 440, facilitating the heat exchange medium to flow into the valve hole 443 from multiple directions, improving the reliability and timeliness of the sensitive component 410 being triggered and actuated by the heat exchange medium, and improving the timeliness of the heat exchange medium being discharged from the discharge assembly 400.

[0175] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the sensitive component 410 includes a blocking portion 412 and a fixing portion 411 connected to the blocking portion 412. The sensitive component 410 is connected to the valve body 440 through the fixing portion 411, and the blocking portion 412 blocks the valve hole 443.

[0176] The blocking portion 412 and the fixing portion 411 may be arranged as an integral structure, and the fixing portion 411 and the valve body 440 may be connected by means of snap connection, connection by fasteners 460, etc.

[0177] By providing the fixing portion 411, the relative fixation of the sensitive component 410 and the valve body 440 is facilitated.

[0178] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the fixing portion 411 surrounds the circumferential direction of the blocking portion 412, and an assembling portion 446 is arranged on the valve body 440. The assembling portion 446 is arranged around the circumferential direction of the valve body 440, and the assembling portion 446 is connected to the fixing portion 411.

[0179] The assembling portion 446 and the valve body 440 may be an integral structure. The assembling portion 446 and the fixing portion 411 may be fixedly connected by means of snap connectors, bolts and other fasteners 460.

[0180] The assembly part 446 is arranged around the valve body 440, the fixing part 411 is arranged around the blocking part 412, the assembly part 446 is correspondingly connected to the fixing part 411, and the structure is convenient to assemble.

[0181] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, the discharge assembly 400 further includes a shielding member 430. The shielding member 430 is arranged on the side of the sensitive member 410 facing away from the inside of the box body 100. The shielding member 430 includes a connecting portion 431 and a shielding portion 432. The connecting portion 431 is arranged around the shielding portion 432. The shielding portion 432 is provided with a communication port 433. The shielding portion 432 is arranged opposite to the blocking portion 412. The connecting portion 431, the fixing portion 411 and the assembly portion 446 are fixedly connected, and the fixing portion 411 is clamped between the connecting portion 431 and the assembly portion 446.

[0182] The shielding portion 432 can be arranged farther away from the sensitive member 410 relative to the connecting portion 431. Exemplarily, as Figures 5 to 7 shown, the middle part of the shielding member 430 bulges downward to form the shielding portion 432. The shielding portion 432 includes a connecting section 4321 and a shielding section 4322. The shielding section 4322 is opposite to and spaced apart from the blocking portion 412. The connecting section 4321 is connected between the shielding portion 432 and the shielding section 4322. The shielding portion 432 is arranged around the connecting section 4321. The shielding portion 432 and the connecting portion 431 can be arranged as an integral structure.

[0183] The assembly portion 446, the fixing portion 411 and the connecting portion 431 can be fixedly connected by fasteners 460.

[0184] The shielding member 430, the valve body 440 and the sensitive member 410 are assembled and fixed relative to each other. The structure is simple, and the three can be assembled to the box body 100 after being assembled, which is convenient for operation; moreover, the sensitive member 410 is pressed and fixed by the valve body 440 and the shielding member 430, and the sensitive member 410 can preferably block the valve hole 443 of the valve body 440, reducing the possibility of water outside the battery device 10 entering the box body 100.

[0185] According to some embodiments of the present application, optionally, as Figures 5 to 8 shown, the discharge assembly 400 further includes a valve seat 450. The valve body 440 is connected to the valve seat 450 and is connected to the first wall 103 through the valve seat 450.

[0186] Exemplarily, the first wall 103 is provided with a communication hole 104. At least a part of the valve seat 450 penetrates through the communication hole 104 and is fixedly relative to the first wall 103. The valve body 440 is installed on the valve seat 450. Among them, the valve seat 450 and the first wall 103 can be fixed by means of clamping, fastener connection, etc. As Figures 5 to 7As shown, the valve seat 450 can also be fixedly coupled with the valve body 440, and the valve seat 450 and the valve body 440 are respectively pressed against the inner and outer sides of the first wall 103, so that the valve seat 450 and the valve body 440 are relatively fixed to the first wall 103 together. The valve seat 450 and the valve body 440 can be connected by means such as threaded connection and snap connection.

[0187] As Figures 5 to 7 shown, the valve seat 450 can be disposed inside the box body 100. A through hole 451 communicating the inside of the box body 100 and the inlet 444 of the valve body 440 can be provided on the valve seat 450. The through hole 451 can be provided on the side wall of the valve seat 450. Along the circumferential direction of the valve body 440, the through hole 451 on the valve seat 450 and the inlet 444 of the valve body 440 can be at least partially misaligned to reduce the possibility of foreign objects entering the valve hole 443.

[0188] By providing the valve seat 450, the assembly of the valve body 440 is facilitated, and the reliability of the connection between the overall discharge assembly 400 and the first wall 103 can also be improved.

[0189] According to some embodiments of the present application, optionally, the valve body 440 and the valve seat 450 are provided to be detachably connected.

[0190] Detachably connected means that the valve body 440 and the valve seat 450 can be disassembled and reassembled without being damaged.

[0191] Exemplarily, the valve body 440 and the valve seat 450 can be assembled and fixed by means such as threaded connection, snap connection, and fastener connection.

[0192] The valve body 440 and the valve seat 450 are provided to be detachably connected, so that the valve seat 450 and the valve body 440 can be independently replaced, reducing the maintenance and repair costs.

[0193] According to some embodiments of the present application, optionally, as Figures 5 to 7 shown, a communication hole 104 is provided on the first wall 103. The valve seat 450 is pressed against the side of the first wall 103 facing the inside of the box body 100. One end of the valve body 440 passes through the communication hole 104 and is connected to the valve seat 450. The other end of the valve body 440 is provided with an assembly portion 446, and the assembly portion 446 is pressed against the side of the first wall 103 facing away from the inside of the box body 100.

[0194] Exemplarily, a threaded hole is provided on the valve seat 450, and threads are provided on the outer peripheral wall of the valve body 440. The valve body 440 is sleeved in the threaded hole of the valve seat 450 and is threadedly connected to the valve seat 450. After the valve body 440 and the valve seat 450 are screwed together in place, the assembly portion 446 of the valve body 440 and the valve seat 450 respectively press against the inner and outer sides of the first wall 103, so that the valve body 440 and the valve seat 450 are relatively fixed, and both the valve body 440 and the valve seat 450 are relatively fixed to the first wall 103.

[0195] Exemplarily, a sealing gasket 470 may be provided between the base and the first wall 103 and / or between the assembly portion 446 and the first wall 103 to improve the sealing performance of the box body 100 at the discharge assembly 400.

[0196] The valve seat 450 and the valve body 440 cooperate with each other to press against the first wall 103, realizing the relative fixation of the discharge assembly 400 and the first wall 103. The structure is simple, and the assembly and maintenance are convenient.

[0197] Such as Figures 2 to 8As shown, an embodiment of the present application provides a battery device 10, including a box body 100, a battery cell 210, a heat exchange assembly 300 and an exhaust assembly 400, wherein the bottom wall of the box body 100 serves as a first wall 103, the battery cell 210 is disposed in the box body 100, the heat exchange assembly 300 is provided with a heat exchange channel for circulating a heat exchange medium, and the heat exchange assembly 300 is disposed in the box body 100 for adjusting the temperature of the battery cell 210, and the heat exchange medium contains sensitive substances. The discharge assembly 400 is sealed and arranged on the first wall 103. The discharge assembly 400 includes a sensitive part 410, a valve body 440, a valve seat 450, an auxiliary actuator 420 and a shielding part 430. The first wall 103 is provided with a connecting hole 104. The valve seat 450 is pressed against a side of the first wall 103 facing the inside of the box body 100. The valve body 440 has a first end 441 and a second end 442 arranged oppositely. The first end 441 is closer to the inside of the box body 100 than the second end 442. The first end 441 of the valve body 440 passes through the connecting hole 104 and is threadedly connected with the valve seat 450. The second end 442 of the valve body 440 is provided with an assembling portion 446, and the assembling portion 446 is pressed against the side of the first wall 103 away from the interior of the box body 100, so that the valve seat 450 and the valve body 440 are installed on the first wall 103; the valve body 440 is provided with a valve hole 443, and the first end 441 is set as a sealing structure, and the side wall of the valve body 440 surrounding the valve hole 443 is provided with an inlet 444 connected to the valve hole 443, and the side wall of the valve seat 450 is provided with a through hole 451 connecting the inlet 444 of the valve body 440 and the interior of the box body 100, and the sensitive component 410 is blocked at the second end 442. The sensitive component 410 includes a sealing portion 412 and a fixing portion 411 connected to the sealing portion 412, the fixing portion 411 is arranged around the sealing portion 412, and the sealing portion 412 blocks the valve hole 443; the assembling portion 446 is arranged around the circumference of the valve body 440, and the shielding component 430 is arranged on the side of the sensitive component 410 away from the interior of the box body 100, the shielding component 430 includes a connecting portion 431 and a shielding portion 432, the connecting portion 431 is arranged around the shielding portion 432, the shielding portion 432 is provided with a connecting port 433, the shielding portion 432 is arranged opposite to the sealing portion 412, the connecting portion 431, the fixing portion 411 and the assembling portion 446 are fixedly connected, and the fixing portion 411 is clamped between the connecting portion 431 and the assembling portion 446. The auxiliary actuating member 420 includes an elastic member 421 and an actuating member 422. A guide member 445 is provided at the first end 441 of the valve body 440 toward the valve hole 443. The elastic member 421 and the actuating member 422 are arranged in the valve hole 443. The actuating member 422 is provided with a receiving groove 4221 having an opening. One end of the guide member 445 is inserted in the receiving groove 4221 and can slide in the receiving groove 4221, so that the actuating member 422 can move relative to the valve body 440 along the deformation direction of the elastic member 421.The elastic member 421 is disposed in the receiving groove 4221. One end of the elastic member 421 is in pressing fit with the guiding member 445, and the other end of the elastic member 421 is in pressing fit with the bottom wall of the receiving groove 4221. The elastic member 421 is a spring in a compressed state and applies a pressure to the actuating member 422, so that the actuating member 422 presses against the sensitive member 410. The sensitive member 410 can be triggered and actuated by the heat exchange medium, and under the pressing action of the auxiliary actuating member 420, a part of the sensitive member 410 is damaged to form a through hole 413, so that the valve hole 443 is opened to form an exhaust passage 401 communicating the inside and outside of the box body 100. The sensitive member 410 is set to have a weaker swelling ability to the environmental medium than to the heat exchange medium. Wherein, the sensitive substance is ethylene glycol, the heat exchange medium is an ethylene glycol aqueous solution, the environmental medium is water, and the material of the sensitive member 410 is nitrile rubber. Nitrile rubber has poor tolerance to ethylene glycol and good water resistance, and is prone to swelling reaction with the ethylene glycol aqueous solution (the specific reaction degree and speed can be controlled by adjusting the composition and concentration of the heat exchange medium, the material of the sensitive member 410, and the material ratio).

[0198] Optionally, the first wall 103 may be provided with a groove structure, which is disposed on the inner wall surface of the first wall 103 and is recessed. The groove structure can collect the leaked heat exchange medium. The discharge assembly 400 may be correspondingly disposed with respect to the groove structure, so that the collected heat exchange medium enters the valve hole 443 through the through hole 451 of the valve seat 450 and the inlet 444 of the valve body 440 of the discharge assembly 400, and interacts with the blocking portion 412 of the sensitive member 410.

[0199] The discharge assembly 400 of the battery device 10 in this embodiment functions as a drain valve. Its sensitive member 410 is a pressure-bearing member. The actuating member 422 abuts against (i.e., presses against) the sensitive member 410. The spring is initially in a compressed state and always applies a stable acting force to the actuating member 422 and the sensitive member 410. The actuating member 422 can generate a displacement in the relative vertical direction with respect to the discharge assembly 400 under the action of the spring; the shielding member 430 can protect the battery device 10 from external force impacts, and at the same time is provided with a communication port 433 to facilitate the heat exchange medium to be discharged outside the battery device 10; the valve seat 450 can be a valve housing structure. The shielding member 430 and the valve seat 450 can be pressed tightly by fastening structures such as bolts and form an integral body (relatively fixed) with the sensitive member 410, so that the structure of the sensitive member 410 is stable. The discharge assembly 400 can not only play a role in triggering liquid discharge, but also play a sealing effect between the inside and outside of the battery device 10.

[0200] For the discharge principle of the discharge assembly 400 of the battery device 10 in this embodiment, reference can be made to Figure 9 , Figure 9Schematic diagram of the force change of the sensitive component proposed in some embodiments of the present application. Here, the abscissa is time / t (i.e., the service life of the sensitive component 410), and the ordinate is the force value / F. F1(t) represents the curve of the strength force value of the sensitive component 410 changing with time under normal circumstances (without the influence of water or heat exchange medium, etc.). F2(t) represents the curve of the strength force value of the sensitive component 410 when encountering water changing with time. F3(t) represents the curve of the strength force value of the sensitive component 410 when encountering the heat exchange medium changing with time. F4(t) represents the acting force exerted by the auxiliary actuator 420 on the sensitive component 410. As Figure 9 shown, first, the discharge assembly 400 is under normal circumstances (without the influence of water or heat exchange medium, etc.), as Figure 5 and Figure 6 shown, and combined with Figure 9 , there is no leakage of the heat exchange medium in the battery device 10. The strength force value of the sensitive component 410 is F1. The spring is compressed and acts on the actuating component 422, and then acts on the sensitive component 410 with a force value of F4. When the battery device 10 is in a normal working state, the strength force value F1 of the sensitive component 410 is always greater than the force value F4 acting on the sensitive component 410 due to the compression of the spring. The sensitive component 410 will not be damaged. Under natural aging of the material, the force values of F1 and F4 change with time to F1(t) and F4(t) respectively. At a certain moment t0, when the sensitive component 410 in the discharge assembly 400 encounters water or the heat exchange medium, the force value of the sensitive component 410 will change. As Figure 9 shown, when the sensitive component 410 in the discharge assembly 400 encounters water, the sensitive component 410 has good water resistance, and its strength force value F2(t) basically does not change, and F2(t) is still greater than F4(t). It is not easy for the discharge assembly 400 to give false alarms. When the sensitive component 410 in the discharge assembly 400 encounters the heat exchange medium, the sensitive component 410 has poor tolerance to the heat exchange medium, and they will have a swelling reaction (or a reaction that can greatly reduce the strength of the sensitive component 410). The strength force value F3(t) of the sensitive component 410 drops sharply. In a short time, the force value F3(t) is less than the force value F4(t) acting on the sensitive component 410 due to the compression of the spring, and the structure of the sensitive component 410 is damaged. As Figure 7 shown, the rupture part 414 moves out of the discharge assembly 400, and the heat exchange medium can be discharged from the battery device 10 through the discharge assembly 400. In this embodiment, the discharge assembly 400 of the battery device 10 can prevent water inside or outside the battery device 10 from entering the discharge assembly 400 and causing false alarms. At the same time, when the heat exchange medium leaks, it can normally carry out the liquid discharge work, reduce customer complaints, and at the same time can greatly reduce the after-sales cost.

[0201] Some embodiments of the present application further provide an electrical device, including the battery device 10 proposed in the present application or any embodiment of the present application. The battery device 10 is used to store electrical energy or provide electrical energy.

[0202] The electrical device may be any of the above electrical devices or systems.

[0203] The electrical device in this embodiment has the same beneficial effects as the battery device 10 proposed in this application or any embodiment of this application.

[0204] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or resemblances can be referred to each other. For the sake of brevity, they will not be elaborated herein. Without special instructions, all embodiments and optional embodiments of this application can be combined with each other to form new technical solutions.

[0205] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered by the scope of the claims and the description of this application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: The box body has a first wall, wherein the first wall is provided with a communicating hole; A battery cell is disposed in the box; A heat exchange component is provided with a heat exchange channel for heat exchange medium to flow, and the heat exchange component is arranged in the box body and is used to adjust the temperature of the battery cell; as well as An exhaust component is arranged on the first wall and blocks the connecting hole. The exhaust component includes a sensitive part. The sensitivity of the sensitive part to the heat exchange medium is greater than that to the ambient medium. The sensitive part is configured to be triggered and actuated by the heat exchange medium so that the exhaust component forms an exhaust channel connecting the inside and outside of the box body.

2. The battery device according to claim 1, characterized in that: The resistance of the sensitive component to the heat exchange medium is weaker than that to the ambient medium.

3. The battery device according to claim 2, characterized in that: The sensitive component is configured to have a swelling capacity to the ambient medium that is weaker than its swelling capacity to the heat exchange medium.

4. The battery device according to claim 1, characterized in that: The material of the sensitive part is nitrile rubber; And / or, the heat exchange medium is a liquid containing an antifreeze agent, and the ambient medium is water.

5. The battery device according to claim 1, characterized in that: The sensitive component is configured to block the discharge channel, and the sensitive component is triggered to be at least partially destroyed to form a through hole, and when the sensitive component is in a triggered state, the through hole communicates with the inside and outside of the box.

6. The battery device according to claim 1, characterized in that: The discharge assembly further includes an auxiliary actuator, which is configured to apply a force to the sensitive component so that the sensitive component is triggered to be actuated by the heat exchange medium.

7. The battery device according to claim 6, characterized in that: The auxiliary actuating member comprises an elastic member, and the elastic member is configured to apply elastic force to the sensitive member.

8. The battery device according to claim 6, characterized in that: The auxiliary actuating member is pressed against the sensitive member.

9. The battery device according to claim 1, characterized in that: The discharge assembly further comprises a shielding member, wherein the shielding member is provided with a communication port, wherein the communication port is arranged to communicate with the discharge passage, and the shielding member is arranged on a side of the sensitive member away from the interior of the box body.

10. The battery device according to any one of claims 1 to 5, characterized in that: The discharge assembly also includes a valve body, which is installed on the first wall. The valve body is provided with a valve hole, and the valve hole is connected to the interior of the box body. The sensitive component is configured to block the valve hole. The sensitive component can be triggered by the heat exchange medium to open the valve hole, thereby forming the discharge channel.

11. The battery device according to claim 10, characterized in that: The discharge assembly also includes an auxiliary actuating member, which includes an elastic member and an actuating component. The elastic member is arranged between the valve body and the actuating component. The elastic member is in an elastic deformation posture and applies elastic force to the actuating component so that the actuating component acts on the sensitive component.

12. The battery device according to claim 11, characterized in that: The actuating component is configured to be movable relative to the valve body along the deformation direction of the elastic member.

13. The battery device according to claim 12, characterized in that: The valve body is provided with a guide member, and the actuating component is connected to the guide member and is arranged to be slidably matched.

14. The battery device according to claim 13, characterized in that: The actuating component is provided with a receiving groove with an opening, one end of the guide member is inserted into the receiving groove and can slide in the receiving groove, and the elastic member is arranged in the receiving groove and is bounded by the guide member.

15. The battery device according to claim 11, characterized in that: The elastic member and the actuating member are both arranged in the valve hole.

16. The battery device according to claim 10, characterized in that: The valve body has a first end and a second end that are oppositely disposed, the first end is closer to the interior of the box body than the second end, and the sensitive component is sealed at the second end.

17. The battery device according to claim 16, characterized in that: The first end is configured as a sealing structure, and an inlet is provided on a side wall of the valve body surrounding the valve hole, and the inlet communicates with the valve hole and the interior of the box body.

18. The battery device according to claim 10, characterized in that: The sensitive component includes a blocking portion and a fixing portion connected to the blocking portion, the sensitive component is connected to the valve body via the fixing portion, and the blocking portion blocks the valve hole.

19. The battery device according to claim 18, characterized in that: The fixing portion is arranged around the circumference of the blocking portion, and the valve body is provided with an assembling portion, which is arranged around the circumference of the valve body and is connected to the fixing portion.

20. The battery device according to claim 19, characterized in that The discharge assembly also includes a shielding member, which is arranged on the side of the sensitive member away from the inside of the box body, and the shielding member includes a connecting portion and a shielding portion, the connecting portion is arranged around the shielding portion, the shielding portion is provided with a connecting port, the shielding portion is arranged opposite to the blocking portion, the connecting portion, the fixing portion and the assembling portion are fixedly connected, and the fixing portion is clamped between the connecting portion and the assembling portion.

21. The battery device according to claim 10, characterized in that: The discharge assembly further includes a valve seat, the valve body is connected to the valve seat, and is connected to the first wall through the valve seat.

22. The battery device according to claim 21, characterized in that The valve body and the valve seat are configured to be detachably connected.

23. The battery device according to claim 21, characterized in that The valve seat is pressed against the side of the first wall facing the inside of the box body, one end of the valve body is connected to the valve seat through the connecting hole, and the other end of the valve body is provided with an assembling part, which is pressed against the side of the first wall away from the inside of the box body.

24. An electrical equipment, characterized in that: The battery device comprises the battery device according to any one of claims 1 to 23, wherein the battery device is used to store electrical energy or provide electrical energy.

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