Battery device and vehicle

Abstract

The utility model discloses a battery device and a vehicle, and relates to the field of vehicles, the battery device comprises: a housing defining an accommodating space; the plurality of single batteries are arranged in the accommodating space; and the heat management mechanism is arranged on the shell, and the heat management mechanism communicates with the containing space and is used for driving the insulation heat exchange medium to flow between the heat management mechanism and the containing space. Therefore, the battery monomers in the accommodating space can be directly immersed in the insulating heat exchange medium, so that efficient heat management of the plurality of battery monomers can be realized, the temperature of the battery monomers can be effectively adjusted, the battery monomers are in a suitable temperature interval for a long time, the use performance of the battery device can be improved, and the service life of the battery device can be prolonged; and in addition, the insulation heat exchange medium is directly injected into the accommodating space, so that a damping and buffering effect can be provided to a certain extent, and the mechanical stability of the battery device can be enhanced.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to a battery device and a vehicle. Background Technology

[0002] In related technologies, the development of new energy vehicles has continuously increased the performance requirements of power batteries. Among them, the thermal management of power batteries is particularly important. However, the current thermal management design of power batteries is unreasonable and cannot effectively regulate the temperature of power batteries, causing power batteries to frequently be in unsuitable temperature ranges, affecting the performance and service life of power batteries, and increasing safety hazards. Utility Model Content

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a battery device that has good performance, long service life, and low safety risks.

[0004] This utility model further proposes a vehicle.

[0005] The battery device according to the present invention includes: a housing defining an accommodating space; a plurality of battery cells disposed in the accommodating space; and a thermal management mechanism disposed in the housing, the thermal management mechanism communicating with the accommodating space and used to drive an insulating heat exchange medium to flow between the thermal management mechanism and the accommodating space.

[0006] According to the battery device of this utility model, the battery cells in the housing space can be directly immersed in the insulating heat exchange medium, thereby achieving efficient thermal management of multiple battery cells, effectively regulating the temperature of the battery cells, keeping the battery cells in a suitable temperature range for a long time, which is beneficial to improving the performance and service life of the battery device, and reducing safety hazards. In addition, by directly injecting the insulating heat exchange medium into the housing space, a vibration damping effect can be provided to a certain extent, which is beneficial to enhancing the mechanical stability of the battery device.

[0007] In some examples of this utility model, the thermal management mechanism includes a refrigeration component, which includes a compressor, a first heat exchanger, and a second heat exchanger. The compressor, the first heat exchanger, and the second heat exchanger form a first refrigeration branch. The first refrigeration branch and the accommodating space form a first refrigeration circuit. The insulating heat exchange medium flows within the first refrigeration circuit.

[0008] In some examples of this utility model, there are multiple second heat exchangers, which are connected in series or in parallel.

[0009] In some examples of this utility model, the refrigeration component further includes: a first driving member, the first driving member, the first refrigeration branch, and the accommodating space to form the first refrigeration circuit.

[0010] In some examples of this utility model, there are multiple first driving elements, and the multiple first driving elements are arranged in parallel.

[0011] In some examples of this utility model, the refrigeration assembly further includes: multiple liquid inlet pipes, all of which are connected between the first refrigeration branch and the accommodating space and are arranged in parallel.

[0012] In some examples of this utility model, the thermal management mechanism includes a refrigeration component, which includes a compressor, a first heat exchanger, a second heat exchanger, and a first driving element. The compressor, the first heat exchanger, and the second heat exchanger form a second refrigeration circuit, in which refrigerant flows. The first driving element, the second heat exchanger, and the accommodating space form a third refrigeration circuit, in which the insulating heat exchange medium flows. The second refrigeration circuit and the third refrigeration circuit exchange heat through the second heat exchanger.

[0013] In some examples of this utility model, the thermal management mechanism further includes a heating component, which includes a heater, a second driving member, the second driving member, the heater, and the accommodating space to form a heating circuit, and the insulating heat exchange medium flows in the heating circuit.

[0014] In some examples of this utility model, the battery device further includes: a controller, a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor. The controller is communicatively connected to the first temperature sensor, the second temperature sensor, the first pressure sensor, the second pressure sensor, and the first drive unit. The first temperature sensor is configured to detect the temperature of the insulating heat exchange medium, the second temperature sensor is configured to detect the temperature of the battery cell, the first pressure sensor is configured to detect the pressure of the containment space, the second pressure sensor is configured to detect the ambient pressure outside the containment space, and the controller is configured to control the operating state of the first drive unit based on the information detected by the first temperature sensor, the second temperature sensor, the first pressure sensor, and the second pressure sensor.

[0015] The vehicle according to this utility model includes the battery device described above.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the battery device according to an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the battery device according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the refrigeration component according to an embodiment of the present utility model.

[0021] Figure label:

[0022] Battery device 100;

[0023] 10. Housing; 11. Upper housing; 12. Lower housing; 13. Battery cell; 14. Thermal management mechanism; 15. Housing space; 16. Bronze plate;

[0024] Refrigeration component 20; compressor 21; first heat exchanger 22; second heat exchanger 23; first refrigeration branch 24; first refrigeration circuit 25; first drive component 26; liquid inlet pipe 27; controller 28. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following is for reference. Figures 1-3 A battery device 100 according to an embodiment of the present invention is described.

[0027] like Figures 1-3 As shown, the battery device 100 according to an embodiment of the present invention includes: a housing 10, a plurality of battery cells 13 and a thermal management mechanism 14.

[0028] The housing 10 defines an accommodating space 15; multiple battery cells 13 are disposed in the accommodating space 15; a thermal management mechanism 14 is disposed in the housing 10, the thermal management mechanism 14 is connected to the accommodating space 15 and is used to drive the insulating heat exchange medium to flow between the thermal management mechanism 14 and the accommodating space 15.

[0029] The housing 10 defines an accommodating space 15. As some embodiments of this application, the housing 10 includes an upper housing 11 and a lower housing 12, which are connected by bolts. The upper housing 11 and the lower housing 12 together define the accommodating space 15.

[0030] The number of battery cells 13 can be multiple, and multiple battery cells 13 are all disposed in the receiving space 15. As some embodiments of this application, multiple battery cells 13 are arranged along a first direction (i.e., Figure 2 The cells are arranged sequentially in the X direction (as shown) to form a row of battery cells, along the second direction (i.e. Figure 2 (As shown in the Y direction), multiple rows of battery cells are arranged sequentially. The multiple rows of battery cells constitute a battery module. The number of battery modules can be one set, or the number of battery modules can be multiple sets.

[0031] As some embodiments of this application, along the second direction (i.e. Figure 2 (in the X direction shown), conductive bars 16 are provided on both sides of the housing 10. The conductive bars 16 may be, but are not limited to, copper bars.

[0032] The thermal management mechanism 14 is connected to the housing space 15. In some embodiments of this application, the thermal management mechanism 14 and the housing space 15 are connected via pipes. The thermal management mechanism 14 is disposed on the housing 10. In some embodiments of this application, at least some components of the thermal management mechanism 14 are connected to the housing 10 by bolts, thus securing the thermal management mechanism 14 to the housing 10. This arrangement ensures the thermal management mechanism 14 is securely mounted on the housing 10, which improves the modularity and integration of the battery device 100.

[0033] The thermal management mechanism 14 can drive the insulating heat exchange medium to flow between the thermal management mechanism 14 and the housing space 15. In other words, the thermal management mechanism 14 can regulate the temperature of the battery cells 13 in the housing space 15 through the insulating heat exchange medium, thereby performing thermal management on multiple battery cells 13 to reduce the risk of overheating or overcooling of multiple battery cells 13.

[0034] The insulating heat exchange medium can be, but is not limited to, fluorinated oil, silicone oil, etc. In some embodiments of this application, the insulating heat exchange medium is silicone oil, and multiple battery cells 13 are fully immersed in the insulating heat exchange medium. The insulating heat exchange medium can absorb the heat generated by the battery cells 13 to achieve efficient cooling of the multiple battery cells 13. In some embodiments of this application, the insulating heat exchange medium is silicone oil, and multiple battery cells 13 are fully immersed in the insulating heat exchange medium. The insulating heat exchange medium can transfer heat to the battery cells 13 to achieve efficient heating of the multiple battery cells 13.

[0035] It should be noted that by fully immersing multiple battery cells 13 in the insulating heat exchange medium, multiple battery cells 13 can be in direct contact with the insulating heat exchange medium, thereby achieving efficient thermal management of the battery cells 13. Furthermore, the high specific heat capacity and good thermal conductivity of the insulating heat exchange medium can be used to quickly regulate the temperature of the battery cells 13. In addition, it can provide a certain degree of vibration damping and buffering effect, thereby improving the mechanical stability of the battery device 100.

[0036] Therefore, the battery cells 13 in the housing space 15 can be directly immersed in the insulating heat exchange medium, thereby achieving efficient thermal management of multiple battery cells 13, effectively regulating the temperature of the battery cells 13, keeping the battery cells 13 in a suitable temperature range for a long time, which is beneficial to improving the performance and service life of the battery device 100 and reducing safety hazards. In addition, by directly injecting the insulating heat exchange medium into the housing space 15, a vibration damping effect can be provided to a certain extent, which is beneficial to enhancing the mechanical stability of the battery device 100.

[0037] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the thermal management mechanism 14 includes a refrigeration component 20, which includes a compressor 21, a first heat exchanger 22, and a second heat exchanger 23. The compressor 21, the first heat exchanger 22, and the second heat exchanger 23 form a first refrigeration branch 24. The first refrigeration branch 24 and the accommodating space 15 form a first refrigeration circuit 25. An insulating heat exchange medium flows in the first refrigeration circuit 25.

[0038] The compressor 21, the first heat exchanger 22, and the second heat exchanger 23 form a first refrigeration branch 24. The first refrigeration branch 24 is connected to the housing space 15 to form a first refrigeration circuit 25. The insulating heat exchange medium can flow in the first refrigeration circuit 25 to cool the multiple battery cells 13 in the housing space 15. As some embodiments of this application, the insulating heat exchange medium is silicone oil. The insulating heat exchange medium continuously flows into the housing space 15 through the first refrigeration branch 24 so that the multiple battery cells 13 are fully immersed in the insulating heat exchange medium. The insulating heat exchange medium can absorb the heat generated by the battery cells 13. The insulating heat exchange medium can flow from the housing space 15 to the refrigeration assembly 20. The refrigeration assembly 20 can cool the insulating heat exchange medium, thereby achieving efficient cooling of the multiple battery cells 13.

[0039] Specifically, the insulating heat exchange medium is cooled in the first refrigeration branch 24, and the cooled insulating heat exchange medium can flow into the containment space 15 to absorb the heat generated by the battery cell 13.

[0040] This configuration can significantly improve the cooling effect of the battery device 100, reduce the risk of overheating of the battery cells 13, improve the performance and safety of the battery device 100, and extend the service life of the battery device 100.

[0041] As some embodiments of this application, the insulating heat exchange medium can exchange heat with the outside environment through the first heat exchanger 22 and the second heat exchanger 23 to cool down. In other words, the first heat exchanger 22 and the second heat exchanger 23 can act as radiators to reduce the temperature of the insulating heat exchange medium (i.e., the insulating heat exchange medium dissipates heat). As some embodiments of this application, the first heat exchanger 22 and the second heat exchanger 23 can act as condensers and evaporators, respectively, to reduce the temperature of the insulating heat exchange medium.

[0042] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, there are multiple second heat exchangers 23, which are connected in series or in parallel.

[0043] The number of second heat exchangers 23 can be multiple, including but not limited to two or three. In some embodiments of this application, two second heat exchangers 23 are connected in series. In other embodiments, three second heat exchangers 23 are connected in parallel.

[0044] This configuration can significantly improve the cooling effect of the cooling component 20, rapidly cool the insulating heat exchange medium, thereby significantly improving the cooling effect of the battery device 100 and reducing the risk of overheating of the battery cell 13.

[0045] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the refrigeration assembly 20 also includes a first driving member 26, the first driving member 26, the first refrigeration branch 24 and the accommodating space 15 forming a first refrigeration circuit 25.

[0046] As some embodiments of this application, the first driving member 26 is connected in series with the first cooling branch 24 and the accommodating space 15 to form a first cooling circuit 25.

[0047] By forming a first refrigeration circuit 25 with the first driving member 26, the first refrigeration branch 24 and the accommodating space 15, the flow rate of the insulating heat exchange medium in the first refrigeration circuit 25 can be adjusted by adjusting the power of the first driving member 26. This makes it easier to adjust the cooling capacity of the thermal management mechanism 14 so that the battery cell 13 is kept in a suitable operating temperature range for a long time, thereby improving the performance and service life of the battery cell 13.

[0048] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, there are multiple first driving components 26, and the multiple first driving components 26 are arranged in parallel.

[0049] The number of first driving components 26 is multiple, and the number of first driving components 26 can be, but is not limited to, three or four. As some embodiments of this application, three first driving components 26 are arranged in parallel, and all three first driving components 26 are connected to the first cooling branch through pipelines.

[0050] This configuration allows for the adjustment of the flow rate of the insulating heat exchange medium within the first cooling circuit 25 by starting or stopping certain first drive components 26 or adjusting the power of at least one first drive component 26. This expands the flow rate adjustment range of the insulating heat exchange medium, thereby enabling precise adjustment of the cooling capacity of the thermal management mechanism 14 so that the battery cell 13 remains within a suitable operating temperature range for an extended period of time.

[0051] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the refrigeration assembly 20 also includes multiple liquid inlet pipes 27, which are all connected between the first refrigeration branch 24 and the accommodating space 15 and are arranged in parallel.

[0052] The number of liquid inlet pipes 27 can be multiple, including but not limited to two or three. In some embodiments of this application, all three liquid inlet pipes 27 are connected between the first refrigeration branch 24 and the accommodating space 15, and the three liquid inlet pipes 27 are arranged in parallel.

[0053] By connecting multiple liquid inlet pipes 27 between the first refrigeration branch 24 and the containment space 15 and arranging them in parallel, the resistance of the insulating heat exchange medium flowing into the containment space 15 can be reduced, the flow rate of the insulating heat exchange medium can be increased, and the multiple liquid inlet pipes 27 connected at different positions in the containment space 15 can allow the insulating heat exchange medium to flow into the containment space 15 from different positions, which is beneficial to make the temperature of the insulating heat exchange medium in various places in the containment space 15 tend to be uniform.

[0054] In some embodiments of this utility model, the thermal management mechanism 14 includes a refrigeration component 20, which includes a compressor 21, a first heat exchanger 22, a second heat exchanger 23, and a first drive member 26. The compressor 21, the first heat exchanger 22, and the second heat exchanger 23 form a second refrigeration circuit, in which refrigerant flows. The first drive member 26, the second heat exchanger 23, and the accommodating space 15 form a third refrigeration circuit, in which an insulating heat exchange medium flows. The second refrigeration circuit and the third refrigeration circuit exchange heat through the second heat exchanger 23.

[0055] In this configuration, compressor 21, first heat exchanger 22, and second heat exchanger 23 are connected in series to form a second refrigeration circuit, and first drive member 26, second heat exchanger 23, and accommodating space 15 are connected in series to form a third refrigeration circuit. As some embodiments of this application, the second heat exchanger 23 includes a first pipe and a second pipe. Compressor 21, first heat exchanger 22, and first pipe are connected in series to form the second refrigeration circuit, and first drive member 26, second pipe, and accommodating space 15 are connected in series to form the third refrigeration circuit. The first pipe and second pipe are capable of heat exchange, allowing the second and third refrigeration circuits to exchange heat through the second heat exchanger 23.

[0056] As some embodiments of this application, a refrigerant flows in the second refrigeration circuit, such as, but not limited to, R134a (1,1,1,2-tetrafluoroethane), R1234YF (2,3,3,3-tetrafluoropropylene), etc.

[0057] It should be noted that in this embodiment, the first heat exchanger 22 and the second heat exchanger 23 can be understood as a condenser and an evaporator, respectively. The working principle of the second refrigeration circuit can be understood as the working principle of an air conditioner. As some embodiments of this application, the refrigeration assembly 20 also includes an expansion valve. The compressor 21, the first heat exchanger 22, the expansion valve, and the first pipeline are connected in series to form the second refrigeration circuit. The refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant under the action of the compressor 21, and then flows through the first heat exchanger 22. The first heat exchanger 22 dissipates heat and becomes a medium-temperature and high-pressure liquid refrigerant. It flows through the expansion valve and becomes a low-temperature and low-pressure liquid. Finally, the low-temperature and low-pressure liquid in the first pipeline of the second heat exchanger 23 is transformed into a low-temperature and low-pressure gaseous state. When the refrigerant passes through the first pipeline of the second heat exchanger 23, it can absorb heat. For example, it can absorb the heat of the insulating heat exchange medium in the second pipeline. Driven by the first driving member 26, the insulating heat exchange medium can continuously flow in the third refrigeration circuit to continuously remove the heat of the battery cell 13 in the containment space 15 to achieve a cooling effect.

[0058] Therefore, by exchanging heat between the second refrigeration circuit and the third refrigeration circuit through the second heat exchanger 23, the second refrigeration circuit can absorb the heat from the third refrigeration circuit, thereby removing the heat from the battery cells 13. This reduces the risk of overheating of multiple battery cells 13, which is beneficial to improving the performance and safety of the battery device 100 and extending its service life.

[0059] As some embodiments of this application, there are multiple second heat exchangers 23, which are connected in series or in parallel. This arrangement can significantly improve the cooling effect of the second refrigeration circuit, rapidly cool the insulating heat exchange medium, and thus significantly improve the cooling effect of the battery device 100, reducing the risk of overheating of the battery cell 13.

[0060] As some embodiments of this application, there are multiple first driving elements 26. For example, the number of first driving elements 26 can be, but is not limited to, three or four. This arrangement allows for the regulation of the flow rate of the insulating heat exchange medium in the third refrigeration circuit by starting or stopping some of the first driving elements 26 or adjusting the power of at least one of the first driving elements 26. This expands the flow rate adjustment range of the insulating heat exchange medium, thereby enabling precise adjustment of the cooling capacity of the thermal management mechanism 14 so that the battery cell 13 remains within a suitable operating temperature range for an extended period of time.

[0061] As some embodiments of this application, the second heat exchanger 23 is connected to the accommodating space 15 through multiple liquid inlet pipes 27, and the multiple liquid inlet pipes 27 are arranged in parallel.

[0062] The number of liquid inlet pipes 27 can be multiple, including but not limited to two or three. By setting multiple liquid inlet pipes 27, the resistance to the insulating heat exchange medium flowing into the containing space 15 can be reduced, the flow rate of the insulating heat exchange medium can be increased, and the multiple liquid inlet pipes 27 connected at different positions in the containing space 15 can allow the insulating heat exchange medium to flow into the containing space 15 from different positions, which is beneficial to making the temperature of the insulating heat exchange medium in the containing space 15 tend to be uniform.

[0063] In some embodiments of this utility model, the thermal management mechanism 14 further includes a heating component, which includes a heater and a second driving member. The second driving member, the heater, and the receiving space 15 form a heating circuit, and an insulating heat exchange medium flows in the heating circuit.

[0064] In some embodiments of this application, the second driving member, the heater, and the accommodating space 15 are connected in series to form a heating circuit. The insulating heat exchange medium can flow in the heating circuit under the drive of the second driving member. In some embodiments of this application, the heater can be configured as an electric heater, and the insulating heat exchange medium in the heating circuit can be heated by directly controlling the current of the electric heater.

[0065] By including a heating component in the thermal management mechanism 14, the risk of multiple battery cells 13 becoming overcooled can be reduced, and the multiple battery cells 13 can be kept in a suitable operating temperature range for a long time, which is beneficial to improving the performance and safety of the battery device 100. In addition, this configuration is beneficial for vehicle cold start.

[0066] In some embodiments of this utility model, such as Figure 2 As shown, the battery device 100 further includes: a controller 28, a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor. The controller 28 may be disposed in the housing space 15. The controller 28 is communicatively connected to the first temperature sensor, the second temperature sensor, the first pressure sensor, and the second pressure sensor. The first temperature sensor is configured to detect the temperature of the insulating heat exchange medium, the second temperature sensor is configured to detect the temperature of the battery cell 13, the first pressure sensor is configured to detect the pressure of the housing space 15, and the second pressure sensor is configured to detect the ambient pressure outside the housing space 15. The controller 28 is configured to control the operating state of the first drive unit 26 based on the information detected by the first temperature sensor, the second temperature sensor, the first pressure sensor, and the second pressure sensor, so as to adjust the flow rate and / or hydraulic pressure of the insulating heat exchange medium.

[0067] As some embodiments of this application, let the temperature of the insulating heat exchange medium detected by the first temperature sensor be T0, and the temperature of the battery cell 13 detected by the second temperature sensor be T... b The first pressure sensor detected a pressure of P in the accommodating space 15. i The second pressure sensor detected an ambient pressure of P outside the containment space 15. e The controller 28 can control the first drive unit 26 based on the information detected by the first temperature sensor, the second temperature sensor, the first pressure sensor, and the second pressure sensor.

[0068] For example, the controller can be based on T0 and T b The difference ΔT between the threshold T preset in controller 28 and the threshold T th If ΔT>T, then... th And T b If the temperature is greater than T0, the controller 28 controls the first drive unit 26 to increase the flow rate Q and / or pressure P of the insulating heat exchange medium to enhance the cooling effect. The increase in the flow rate Q and pressure P of the insulating heat exchange medium satisfies the following relationship:

[0069] Q = Q0 + k1ΔT

[0070] P = P0 + k2ΔT

[0071] Wherein, Q0 is the basic flow rate of the first driving component 26, P0 is the basic pressure of the first driving component 26, k1 is a proportionality coefficient, and k2 is a proportionality coefficient. Both k1 and k2 have units, such that the unit of k1ΔT is the same as the unit of Q, and the unit of k2ΔT is the same as the unit of P. It should be noted that the units of k1 and k2 can be calculated using existing formulas, which will not be elaborated here.

[0072] As some embodiments of this application, let P be the pressure detected by the first pressure sensor in the accommodating space 15. i The second pressure sensor detected an ambient pressure of P outside the containment space 15. e The controller 28 can control the first drive unit 26 based on the information detected by the first pressure sensor and the second pressure sensor. The controller can control the first drive unit 26 according to P. i and P e The difference ΔP and the threshold P preset in controller 28 th If ΔP>P, then... th And P e Greater than P i Then, controller 28 controls the first drive unit 26 to increase the pressure P of the insulating heat exchange medium to enhance the cooling effect. The increase in the pressure P of the insulating heat exchange medium satisfies the following relationship:

[0073] P = P0 + k3ΔP

[0074] Wherein, P0 is the base pressure of the first driving component 26, k3 is the proportional coefficient, and k3 has units so that the unit of k3ΔP is the same as the unit of P. It should be explained that the unit of k3 can be calculated according to existing formulas, which will not be elaborated here.

[0075] It should be noted that the controller 28 can simultaneously regulate the flow rate and pressure of the insulating heat exchange medium to ensure that the battery cell 13 can be maintained within a suitable temperature and pressure range, thereby improving the performance and safety of the battery device 100.

[0076] As some embodiments of this application, the threshold T of controller 28 th The threshold P of controller 28 can be, but is not limited to, 5°C. th It can be, but is not limited to, 0.1 atm.

[0077] This setup enables real-time monitoring of the temperature difference between the insulating heat exchange medium and the battery cell 13, as well as the pressure difference between the inside and outside of the casing 10, in order to dynamically adjust the flow rate and pressure of the insulating heat exchange medium. This achieves precise temperature control and pressure balance control of the battery device 100, which helps to extend the service life of the battery device 100.

[0078] The vehicle according to the present utility model includes the battery device 100 of the above embodiment. The battery device 100 proposed in this application can directly immerse the battery cells 13 in the accommodating space 15 in the insulating heat exchange medium, thereby achieving efficient thermal management of multiple battery cells 13, effectively regulating the temperature of the battery cells 13, and keeping the battery cells 13 in a suitable temperature range for a long time. This is beneficial to improving the performance and service life of the battery device 100 and reducing safety hazards. In addition, by directly injecting the insulating heat exchange medium into the accommodating space 15, a vibration damping effect can be provided to a certain extent, which is beneficial to enhancing the mechanical stability of the battery device 100.

[0079] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0080] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0081] In the description of this utility model, "multiple" means two or more.

[0082] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0083] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: A housing that defines an accommodating space; Multiple battery cells, all of which are disposed in the accommodating space; A thermal management mechanism is disposed in the housing and communicates with the accommodating space. The thermal management mechanism is used to drive an insulating heat exchange medium to flow between the thermal management mechanism and the accommodating space. The thermal management mechanism includes a refrigeration component, which includes a compressor, a first heat exchanger, a second heat exchanger, and a first driving element. The compressor, the first heat exchanger, and the second heat exchanger form a first refrigeration branch. The first driving element, the first refrigeration branch, and the accommodating space form a first refrigeration circuit. The insulating heat exchange medium flows in the first refrigeration circuit. The system includes a controller, a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor. The controller is communicatively connected to the first temperature sensor, the second temperature sensor, the first pressure sensor, the second pressure sensor, and the first drive unit. The first temperature sensor is configured to detect the temperature of the insulating heat exchange medium. The second temperature sensor is configured to detect the temperature of the battery cell. The first pressure sensor is configured to detect the pressure of the containment space. The second pressure sensor is configured to detect the ambient pressure outside the containment space. The controller is configured to control the operating state of the first drive unit based on the information detected by the first temperature sensor, the second temperature sensor, the first pressure sensor, and the second pressure sensor.

2. The battery device according to claim 1, characterized in that, There are multiple second heat exchangers, which are connected in series or in parallel.

3. The battery device according to claim 1, characterized in that, There are multiple first driving components, and the multiple first driving components are arranged in parallel.

4. The battery device according to claim 1, characterized in that, The refrigeration assembly further includes: multiple liquid inlet pipes, all of which are connected between the first refrigeration branch and the accommodating space and are arranged in parallel.

5. The battery device according to any one of claims 1-4, characterized in that, The thermal management mechanism further includes a heating component, which includes a heater, a second driving element, the second driving element, the heater, and the accommodating space to form a heating circuit, and the insulating heat exchange medium flows within the heating circuit.

6. A vehicle, characterized in that, Includes the battery device according to any one of claims 1-5.

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