Temperature adjusting device and system of battery and vehicle

Abstract

The utility model provides a temperature adjusting device and system of a battery and a vehicle, and belongs to the technical field of vehicles, the temperature adjusting device of the battery comprises a first shell, a second shell and a temperature adjusting device, the inner side of the first shell is provided with a first cavity used for containing the battery; the second shell surrounds the outer side of the first shell, and a second cavity is defined by the inner surface of the second shell and the outer surface of the first shell; the at least one separation layer is arranged in the second cavity, the at least one separation layer is used for separating the second cavity into a plurality of sub-cavities which are distributed along a target direction and respectively surround the first shell, and the target direction is a direction pointing from the first shell to the second shell; and the plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials of which the phase change temperatures are sequentially increased. According to the temperature adjusting device, the temperature of the battery can be adjusted without an external heat source, and energy consumed by heat preservation of the battery is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more specifically, to a battery temperature control device, system, and vehicle. Background Art

[0002] Batteries are energy storage devices widely used in new energy vehicles to power their drive motors. Because these motors require a lot of power, batteries must deliver a high amount of energy per unit time. Consequently, the batteries generate significant heat during driving, causing their temperature to rise. Furthermore, after prolonged periods of parking in winter, the battery's temperature drops rapidly, leading to insufficient power supply during vehicle start-up.

[0003] To maintain the battery's temperature within a suitable range during vehicle use, liquid cooling is often used to regulate the battery's temperature. However, to effectively maintain heat in cold environments, liquid cooling requires additional energy from the vehicle or charging station to heat the coolant, resulting in significant energy consumption. Utility Model Content

[0004] Based on this, the present application provides a battery temperature control device, system and vehicle to solve the problem of how to reduce the energy consumed to achieve battery insulation.

[0005] In a first aspect of an embodiment of the present application, a temperature control device for a battery is provided, the temperature control device comprising:

[0006] a first shell, wherein a first cavity for accommodating the battery is provided on an inner side of the first shell;

[0007] a second shell surrounding the outer side of the first shell, wherein the inner surface of the second shell and the outer surface of the first shell together form a second cavity;

[0008] at least one partition layer disposed in the second cavity, the at least one partition layer being used to divide the second cavity into a plurality of sub-cavities distributed along a target direction and respectively surrounding the first shell, the target direction being a direction pointing from the first shell to the second shell;

[0009] The plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures.

[0010] Optionally, the phase change material includes a solid-liquid phase change material.

[0011] Optionally, the temperature regulating device further comprises: a plurality of heat sinks;

[0012] The plurality of heat sinks are located in at least one of the sub-cavities and in contact with the phase change material in the sub-cavity. The heat sinks are connected to at least one of the outer surface of the first shell, the surface of the isolation layer, and the inner surface of the second shell.

[0013] Optionally, the temperature regulating device includes one of the isolation layers;

[0014] The plurality of sub-cavities include a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is located on a side of the partition layer close to the first shell, and the second sub-cavity is located on a side of the partition layer away from the first shell;

[0015] The plurality of heat sinks are located in the second sub-cavity and connected to the surface of the isolation layer.

[0016] Optionally, the temperature regulating device further comprises: a plurality of pressure regulating valves, wherein the plurality of pressure regulating valves are respectively arranged on the cavity walls of the plurality of sub-cavities;

[0017] The pressure regulating valve is used to connect the interior of the sub-cavity with the exterior of the sub-cavity when the phase change material undergoes phase change.

[0018] Optionally, the temperature regulating device further comprises: a plurality of mutually parallel heat exchange pipes;

[0019] The heat exchange pipes are connected to the outer side surface of the second shell, and the flow directions of the heat exchange medium in two adjacent heat exchange pipes are different.

[0020] Optionally, the heat exchange pipe is connected to a heat dissipation pipe of a heat source, and the heat source includes a drive motor and / or an engine;

[0021] The heat dissipation pipe is used to absorb the heat generated by the heat source;

[0022] The heat exchange pipe is used to transfer the heat absorbed by the heat dissipation pipe to the phase change material.

[0023] According to a second aspect of the embodiments of the present application, a battery temperature control system is provided. The temperature control system includes multiple temperature control devices according to the first aspect of the embodiments of the present application, and the second shells of the multiple temperature control devices are connected to each other.

[0024] Optionally, the second shell is in a polygonal cylindrical shape, and at least one side surface of the second shells of two adjacent temperature control devices is connected to each other.

[0025] A third aspect of the embodiments of the present application provides a vehicle comprising the battery temperature control system according to the second aspect of the embodiments of the present application, or the battery temperature control device according to the first aspect of the embodiments of the present application.

[0026] The present application provides a battery temperature control device, system and vehicle, wherein the temperature control device includes: a first shell, wherein a first cavity for accommodating the battery is provided on the inner side of the first shell; a second shell, surrounding the outer side of the first shell, wherein the inner surface of the second shell and the outer surface of the first shell together form a second cavity; at least one partition layer, arranged in the second cavity, wherein the at least one partition layer is used to separate the second cavity into a plurality of sub-cavities distributed along a target direction and respectively surrounding the first shell, wherein the target direction is a direction from the first shell to the second shell; the plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures.

[0027] The temperature control device described in this application includes a first shell, a second shell, and at least one insulating layer. A first cavity for accommodating a battery is provided within the first shell, and the first and second shells together form a second cavity. At least one insulating layer is located within the second cavity, dividing the second cavity into multiple sub-cavities distributed along a target direction and surrounding the first shell. The multiple sub-cavities distributed along the target direction are each filled with phase change materials having successively increasing phase change temperatures. When the ambient temperature begins to drop, the phase change material in the sub-cavity closest to the second shell begins to undergo a phase change, thereby releasing heat to heat the battery. Subsequently, as the ambient temperature further decreases, the phase change material in each sub-cavity begins to undergo a phase change in a direction opposite to the target direction, and thus successively releases heat. As the ambient temperature drops, the phase change material in each sub-cavity begins to undergo a phase change in a direction opposite to the target direction, thereby sequentially releasing heat. This results in the temperature control device releasing more heat as the ambient temperature drops, maintaining the battery temperature at a relatively stable level. Ultimately, the temperature control device regulates the battery temperature without an external heat source, reducing the energy consumed by battery insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of a battery temperature control device provided in an embodiment of the present application;

[0030] Figure 2 This is a front view of a battery temperature control device provided in an embodiment of the present application;

[0031] Figure 3 This is a structural diagram of a battery temperature control system provided in an embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1-battery, 2-temperature regulating device, 201-first shell, 202-second shell, 203-insulation layer, 204-heat sink, 205-heat exchange pipe, 206-pressure regulating valve. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] Batteries are energy storage devices widely used in new energy vehicles to power their drive motors. Because these motors require a lot of power, batteries must deliver a high amount of energy per unit time. Consequently, the batteries generate significant heat during driving, causing their temperature to rise. Furthermore, after prolonged periods of parking in winter, the battery's temperature drops rapidly, leading to insufficient power supply during vehicle start-up.

[0036] To maintain the battery's temperature within a suitable range during vehicle use, liquid cooling is often used to regulate the battery's temperature. However, to effectively maintain heat in cold environments, liquid cooling requires additional energy from the vehicle or charging station to heat the coolant, resulting in significant energy consumption.

[0037] Based on this, in order to solve the problem of how to reduce the energy consumed to achieve battery insulation, the present application provides a battery temperature control device, system and vehicle, including a first shell, a second shell, and at least one insulating layer. A first cavity for accommodating the battery is provided inside the first shell, and the first shell and the second shell together form a second cavity. At least one insulating layer is located in the second cavity, dividing the second cavity into a plurality of sub-cavities distributed along the target direction and surrounding the first shell. The plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with increasing phase change temperatures. When the ambient temperature begins to drop, the phase change material in the sub-cavity closest to the second shell begins to undergo phase change, thereby releasing heat to heat the battery. Subsequently, when the ambient temperature further gradually drops, the phase change materials in each sub-cavity begin to undergo phase change in a direction opposite to the target direction, and then release heat in sequence, so that the lower the ambient temperature, the more heat released by the temperature control device, keeping the battery temperature at a relatively stable level, and ultimately enabling the temperature control device to achieve battery temperature regulation without an external heat source, thereby reducing the energy consumed by battery insulation. The specific method is as follows:

[0038] The first aspect of this application proposes an embodiment, such as Figure 1 A schematic diagram of the structure of a battery temperature control device is shown, and Figure 2 As shown in the front view of a battery temperature control device, the temperature control device 2 includes:

[0039] A first housing 201 is provided inside the first housing 201 with a first cavity for accommodating the battery 1;

[0040] The second shell 202 surrounds the outer side of the first shell 201, and the inner surface of the second shell 202 and the outer surface of the first shell 201 together form a second cavity;

[0041] At least one partition layer 203 is disposed in the second cavity. The at least one partition layer 203 is used to divide the second cavity into multiple sub-cavities distributed along a target direction and respectively surrounding the first shell 201. The target direction is a direction from the first shell 201 to the second shell 202.

[0042] A plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures.

[0043] To facilitate understanding of the structure, Figure 1 The second cavity in the temperature control device 2 shown is an open cavity. In actual engineering applications, the second cavity may also be a closed cavity.

[0044] A first cavity for accommodating the battery 1 is provided inside the first housing 201. The shape of the first cavity can be adapted to the shape of the battery 1 to allow the first housing 201 to conform to the surface of the battery 1, thereby improving the heat transfer efficiency between the battery 1 and the first housing 201. For example, if the battery 1 is cylindrical, the first cavity can be cylindrical; if the battery 1 is cubic, the first cavity can be cubic.

[0045] The second housing 202 surrounds the outside of the first housing 201, and the inner surface of the second housing 202 and the outer surface of the first housing 201 together form a second cavity. The edge of the second housing 202 can be connected to the edge of the first housing 201, making the second cavity a sealed cavity.

[0046] The barrier layer 203 is disposed within the second cavity, and may be one barrier layer 203 or two or more barrier layers 203. When there is one barrier layer 203, the second cavity is divided into two sub-cavities; when there are two barrier layers 203, the second cavity is divided into three cavities, with the multiple sub-cavities arranged sequentially along the target direction from the first shell 201 to the second shell 202.

[0047] Phase change materials (PCMs) are materials that can transition between any two states—solid, liquid, or gas—within a certain temperature range. During this phase change, PCMs absorb or release a significant amount of latent heat, while experiencing relatively small temperature changes.

[0048] The multiple sub-cavities are each filled with a phase change material, and the phase change temperatures of the phase change materials filled in the multiple sub-cavities distributed along the target direction increase sequentially. In layman's terms, in two adjacent sub-cavities, the phase change temperature of the phase change material filled in the sub-cavity closer to the first shell 201 is lower than the phase change temperature of the phase change material filled in the sub-cavity farther from the first shell 201.

[0049] by Figure 1 For example, Figure 1 The structure shown is a temperature control device 2 having an isolation layer 203, and the first isolation layer 203 divides the second cavity into two sub-cavities. The two sub-cavities include a first sub-cavity and a second sub-cavity. The first sub-cavity is located on the side of the isolation layer 203 close to the first shell 201, and the second sub-cavity is located on the side of the isolation layer 203 close to the second shell 202, so along the target direction, there are the first sub-cavity and the second sub-cavity in sequence. Furthermore, the phase change temperature of the phase change material filled in the first sub-cavity should be lower than the phase change temperature of the phase change material filled in the second sub-cavity. In an optional embodiment, the phase change temperature of the phase change material filled in the first sub-cavity can be 0 to 5°C, and the phase change temperature of the phase change material filled in the second sub-cavity can be 25 to 30°C.

[0050] The shape of the partition layer 203 can be adapted to the shape of the first shell 201, or adapted to the shape of the second shell 202. For example, if the shape of the first shell 201 is cylindrical and the shape of the second shell 202 is cubic, the partition layer 203 can be cylindrical to adapt to the shape of the first shell 201, or can be cubic to adapt to the shape of the second shell 202.

[0051] In an optional embodiment, the first shell 201 , the second shell 202 and the isolation layer 203 may be made of metal aluminum or aluminum alloy.

[0052] The temperature control device 2 of this embodiment includes a first shell 201, a second shell 202, and at least one insulating layer 203. A first cavity for accommodating the battery 1 is provided inside the first shell 201, and the first shell 201 and the second shell 202 together form a second cavity. At least one insulating layer 203 is located in the second cavity, dividing the second cavity into a plurality of sub-cavities distributed along the target direction and surrounding the first shell 201. The plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures. When the ambient temperature begins to drop, the phase change material in the sub-cavity closest to the second shell 202 begins to undergo a phase change, thereby releasing heat to heat the battery 1. Subsequently, when the ambient temperature further gradually decreases, the phase change materials in each sub-cavity begin to undergo phase change in sequence in a direction opposite to the target direction, and then release heat in sequence, so that the lower the ambient temperature, the more heat released by the temperature control device 2, thereby maintaining the temperature of the battery 1 at a relatively stable level. Ultimately, the temperature control device 2 can regulate the temperature of the battery 1 without an external heat source, thereby reducing the energy consumed by the battery 1 to keep it warm.

[0053] Optionally, the phase change material includes a solid-liquid phase change material.

[0054] Solid-liquid phase change materials (SLCMs) are materials that undergo a phase transition between solid and liquid phases. They absorb heat when changing from solid to liquid and release heat when changing from liquid to solid. Common SLCMs include acetate, water, and crystalline hydrated salts. Depending on the desired phase transition temperature, these ingredients can be mixed in varying proportions to create a SLC that meets your needs.

[0055] When the ambient temperature is lower than the phase transition temperature of the solid-liquid phase change material, the solid-liquid phase change material changes from liquid to solid, releasing heat to battery 1 and preventing the temperature of battery 1 from further decreasing. Because the solid-state heat preservation capacity of the solid-liquid phase change material is higher than that of the liquid, after the solid-state heat preservation material changes from liquid to solid, it not only heats battery 1 through the released heat, but also forms a heat-insulating layer on the outside of battery 1, thereby slowing the rate of heat dissipation.

[0056] This embodiment limits the phase change material to a solid-liquid phase change material. This not only utilizes the heat released during the phase change of the solid-liquid phase change material to heat the battery 1, but also enhances the heat preservation capability of the temperature control device 2 by using the solid-liquid phase change material, slowing the temperature drop of the battery 1. Furthermore, since the volume change of the solid-liquid phase change material before and after the phase change is minimal, limiting the phase change material to a solid-liquid phase change material also avoids adjusting the internal pressure of the sub-cavity, simplifying the structure of the temperature control device 2.

[0057] Optionally, the temperature regulating device 2 further includes: a plurality of heat sinks 204;

[0058] A plurality of heat sinks 204 are located in at least one sub-cavity and contact the phase change material in the sub-cavity. The heat sinks 204 are connected to at least one of the outer surface of the first shell 201 , the surface of the isolation layer 203 , and the inner surface of the second shell 202 .

[0059] The temperature control device 2 also includes a plurality of heat sinks 204. The heat sinks 204 are devices for dissipating heat, which can help dissipate heat quickly by increasing the surface area. In an optional embodiment, the heat sinks 204 can be made of a metal material, specifically aluminum alloy, copper, or steel.

[0060] A plurality of heat sinks 204 are located in the plurality of subcavities, and the heat sinks 204 are connected to at least one of the outer surface of the first housing 201, the surface of the barrier layer 203, and the inner surface of the second housing 202. The surfaces of the heat sinks 204 contact the phase change material in the subcavities, thereby conducting heat dissipated by the phase change material to the first housing 201, the second housing 202, or the barrier layer 203, or transferring heat from the first housing 201, the second housing 202, or the barrier layer 203 to the phase change material.

[0061] In an optional embodiment, when the first shell 201, the second shell 202 and the isolation layer 203 are all cylindrical, the heat sink 204 can extend along the axial direction of the first shell 201, the second shell 202 and the isolation layer 203, or can also surround the first shell 201, the second shell 202 and the isolation layer 203 in a circumferential direction.

[0062] In this embodiment, a heat sink 204 is provided in the sub-cavity to accelerate the temperature transfer efficiency between the phase change material and each shell, so that the heat of the battery 1 is more quickly and evenly conducted to the phase change material, achieving good temperature rise control of the battery 1 and improving the overall temperature uniformity of the temperature control device 2.

[0063] Optionally, the temperature regulating device 2 includes an isolation layer 203;

[0064] The multiple sub-cavities include a first sub-cavity and a second sub-cavity. The first sub-cavity is located on a side of the partition layer 203 close to the first shell 201 , and the second sub-cavity is located on a side of the partition layer 203 away from the first shell 201 .

[0065] A plurality of heat sinks 204 are located in the second sub-cavity and connected to the surface of the isolation layer 203 .

[0066] refer to Figure 1 In the illustrated structure of the temperature control device 2, when there is only one barrier layer 203, the barrier layer 203 divides the second cavity into two sub-cavities: a first cavity and a second cavity. The first sub-cavity is located on the side of the barrier layer 203 that is closer to the first housing 201, while the second sub-cavity is located on the side of the barrier layer 203 that is farther from the first housing 201.

[0067] Battery 1 continuously generates heat while the vehicle is in motion. After the vehicle stops driving, the heat generated by battery 1 gradually dissipates, causing the temperature of battery 1 to gradually decrease. In this embodiment, the heat sink 204 is located in the second sub-cavity, which can reduce the rate at which heat from battery 1 dissipates into the phase change material in the first sub-cavity, thereby slowing the rate at which the temperature of battery 1 decreases.

[0068] Optionally, the temperature regulating device 2 further includes: a plurality of pressure regulating valves 206, wherein the plurality of pressure regulating valves 206 are respectively arranged on the cavity walls of the plurality of sub-cavities;

[0069] The pressure regulating valve 206 is used to connect the inside of the sub-cavity with the outside of the sub-cavity when the phase change material undergoes phase change.

[0070] The temperature control device 2 also includes a plurality of pressure regulating valves 206, which are respectively arranged on the cavity walls of the plurality of sub-cavities. Depending on the position of the sub-cavity, the cavity wall of the sub-cavity can be the first shell 201, the second shell 202 or the isolation layer 203. Figure 1 Taking the temperature control device 2 shown as an example, the cavity wall of the first sub-cavity is the first shell 201 and the isolation layer 203 , and the cavity wall of the second sub-cavity is the second shell 202 and the isolation layer 203 .

[0071] Phase change materials undergo a change in state before and after a phase transition, for example, from solid to liquid or vice versa. This change in state is accompanied by a change in the volume of the phase change material, which in turn causes a change in the pressure within the sub-cavity. Therefore, to prevent deformation of the first shell 201, the second shell 202, and the barrier layer 203 due to changes in the sub-cavity's internal pressure, a pressure regulating valve 206 can be installed on the sub-cavity wall.

[0072] When the phase change material undergoes a phase change, the pressure regulating valve 206 connects the interior of the sub-cavity with the exterior of the sub-cavity, allowing the outside air to enter the interior, or the inside air to flow out of the exterior, thereby adjusting the air pressure inside the sub-cavity and avoiding excessive air pressure.

[0073] In an optional embodiment, the pressure regulating valve 206 may be a diaphragm pressure relief valve.

[0074] Optionally, the temperature regulating device 2 further comprises: a plurality of mutually parallel heat exchange pipes 205;

[0075] The heat exchange pipes 205 are connected to the outer side surface of the second shell 202 , and the flow directions of the heat exchange medium in two adjacent heat exchange pipes 205 are different.

[0076] To enable the temperature control device 2 to quickly remove heat generated by the battery 1 while cooling the battery 1 and prevent heat accumulation in the phase change material, the temperature control device 2 also includes multiple surrounding pipes. The multiple heat exchange pipes 205 each contain a flowing heat exchange medium, and the multiple heat exchange pipes 205 are parallel to each other.

[0077] After the phase-change material absorbs the heat generated by battery 1, the heat exchange medium in heat exchange pipe 205 can further remove the heat from the phase-change material, thereby maintaining the phase-change material's heat dissipation capacity at a relatively stable level. At the same time, because the heat exchange medium in heat exchange pipe 205 continuously absorbs heat during its flow, its heat dissipation capacity gradually decreases during its flow. For this reason, this embodiment restricts the flow direction of the heat exchange medium in two adjacent heat exchange pipes 205 to different directions. This allows similar amounts of heat to be removed from phase-change materials at different locations, thereby maintaining a low temperature difference in battery 1.

[0078] In an optional embodiment, the multiple heat exchange pipes 205 can be integrated into a liquid cooling plate, which includes a first plate surface and a second plate surface. The first plate surface and the second plate surface together form a third accommodating cavity for accommodating the multiple heat exchange pipes 205. The multiple heat exchange pipes 205 are located in the third accommodating cavity. The first plate surface or the second plate surface is in contact with the outer surface of the second shell 202.

[0079] Optionally, the heat exchange pipe 205 is connected to a heat dissipation pipe of a heat source, and the heat source includes a drive motor and / or an engine;

[0080] The heat dissipation pipe is used to absorb the heat generated by the heat source;

[0081] The heat exchange pipe 205 is used to transfer the heat absorbed by the heat dissipation pipe to the phase change material.

[0082] The heat source may be the drive motor, the engine, or both the drive motor and the engine.

[0083] When the phase change materials in each sub-cavity have completed phase change, but the heat released is still unable to keep the temperature of the battery 1 within an appropriate range, the battery 1 can also be heated by the heat generated by at least one of the drive motor and the engine.

[0084] The heat exchange pipe 205 can be connected to the heat dissipation pipe by wall-to-wall contact or by pipe-to-pipe communication. When the wall of the heat exchange pipe 205 is in contact with the wall of the heat dissipation pipe, the heat exchange pipe 205 absorbs heat from the heat dissipation pipe through thermal radiation, thereby transferring the heat to the phase change material. When the pipe of the heat exchange pipe 205 is connected to the pipe of the heat dissipation pipe, the heat exchange pipe 205 transfers the medium in the heat dissipation pipe that has absorbed heat from the heat source to the outside of the second housing 202, where it is then transferred to the phase change material through the second housing 202.

[0085] In this embodiment, the heat exchange pipe 205 is connected to the heat dissipation pipe of the heat source, and the heat generated by the drive motor and the engine is transferred to the phase change material for heating the battery 1. This not only keeps the temperature of the battery 1 within a suitable range, but also enables the reuse of waste heat from the engine and the drive motor, thereby improving the energy efficiency of the vehicle.

[0086] Based on the same concept, the present application also provides a temperature control system for a battery 1, such as Figure 3 As shown in the structural schematic diagram of a battery temperature control system, the temperature control system includes:

[0087] A plurality of temperature control devices 2 described in this application, and the second shells 202 of the plurality of temperature control devices 2 are connected to each other.

[0088] Optionally, the second shell 202 is in a polygonal cylindrical shape, and at least one side surface of the second shells 202 of two adjacent temperature control devices 2 is connected to each other.

[0089] The second housing 202 can be a quadrilateral cylindrical structure, or a pentagonal or hexagonal cylindrical structure. When the temperature control system includes multiple temperature control devices 2, in order to improve the space utilization of the temperature control system, the shape of the second housing 202 can be limited to a polygonal cylindrical shape, thereby increasing the contact area between the second housings 202 of two adjacent temperature control devices 2, increasing the cavity volume of the second accommodating chamber, and improving the temperature control efficiency of the temperature control devices 2.

[0090] In an optional embodiment, the side surfaces of the second shells 202 of two adjacent temperature control devices 2 may be connected by adhesive.

[0091] Based on the above embodiment, refer to Figure 1 、 Figure 2 as well as Figure 3 The following is an exemplary description of the temperature control device 2 and system of the battery 1 described in this application:

[0092] The temperature control system described in this application includes multiple temperature control devices 2. Each temperature control device 2 includes a first shell 201, a second shell 202, an isolation layer 203, and multiple heat sinks 204. A first cavity for accommodating the battery 1 is provided on the inner side of the first shell 201, and the second shell 202 surrounds the outer side of the first shell 201, and the inner surface of the second shell 202 and the outer surface of the first shell 201 together form a second cavity. The isolation layer 203 is provided in the second cavity, dividing the second cavity into a first sub-cavity and a second sub-cavity distributed along the target direction, and respectively surrounding the first shell 201.

[0093] The first sub-cavity is located on the side of the isolation layer 203 close to the first housing 201, and the second sub-cavity is located on the side of the isolation layer 203 away from the first housing 201. The first sub-cavity and the second sub-cavity are respectively filled with solid-liquid phase change materials, and the phase change temperature of the solid-liquid phase change material filled in the first sub-cavity is lower than the phase change temperature of the solid-liquid phase change material filled in the second sub-cavity.

[0094] Each temperature control device 2 also includes a plurality of heat sinks 204, a plurality of pressure regulating valves 206, and a plurality of heat exchange pipes 205 that are parallel to each other and connected to the heat dissipation pipe of the heat source. The plurality of heat sinks 204 are located in the second sub-cavity and are connected to the surface of the isolation layer 203. The plurality of pressure regulating valves 206 are respectively arranged on the cavity walls of the plurality of sub-cavities, and the pressure regulating valves 206 are used to connect the inside of the sub-cavity with the outside of the sub-cavity when the phase change material undergoes a phase change. The heat exchange pipes 205 are connected to the outer side surface of the second shell 202, and the flow direction of the heat exchange medium in the two adjacent heat exchange pipes 205 is different. The heat exchange pipes 205 are used to transfer the heat absorbed by the heat dissipation pipes to the phase change material.

[0095] The second shell 202 of each temperature control device 2 is in a polygonal cylindrical shape, and at least one side surface of the second shells 202 of two adjacent temperature control devices 2 is connected to each other, thereby forming the temperature control system described in this application.

[0096] An embodiment of the present application further provides a vehicle, comprising a temperature control system for a battery 1 provided in the present application, or comprising a temperature control device 2 for a battery 1 described in the present application.

[0097] The present application provides a battery temperature control device, system and vehicle, the temperature control device 2 includes: a first shell 201, the inner side of the first shell 201 is provided with a first cavity for accommodating the battery 1; a second shell 202, surrounding the outer side of the first shell 201, the inner surface of the second shell 202 and the outer surface of the first shell 201 together form a second cavity; at least one partition layer 203, arranged in the second cavity, at least one partition layer 203 is used to divide the second cavity into multiple sub-cavities distributed along a target direction and respectively surrounding the first shell 201, the target direction is the direction from the first shell 201 to the second shell 202; the multiple sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures.

[0098] The temperature control device 2 described in the present application includes a first shell 201, a second shell 202, and at least one isolation layer 203. A first cavity for accommodating the battery 1 is provided inside the first shell 201, and the first shell 201 and the second shell 202 together form a second cavity. At least one isolation layer 203 is located in the second cavity, dividing the second cavity into a plurality of sub-cavities distributed along the target direction and surrounding the first shell 201. The plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures. When the ambient temperature begins to drop, the phase change material in the sub-cavity closest to the second shell 202 begins to undergo a phase change, thereby releasing heat to heat the battery 1. Subsequently, when the ambient temperature further gradually decreases, the phase change materials in each sub-cavity begin to undergo phase change in sequence in a direction opposite to the target direction, and then release heat in sequence, so that the lower the ambient temperature, the more heat released by the temperature control device 2, thereby maintaining the temperature of the battery 1 at a relatively stable level. Ultimately, the temperature control device 2 can regulate the temperature of the battery 1 without an external heat source, thereby reducing the energy consumed by the battery 1 to keep it warm.

[0099] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0100] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0101] The above is a detailed introduction to a battery temperature control device, system and vehicle provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A battery temperature control device, characterized in that: The temperature regulating device comprises: a first shell, wherein a first cavity for accommodating the battery is provided on an inner side of the first shell; a second shell surrounding the outer side of the first shell, wherein the inner surface of the second shell and the outer surface of the first shell together form a second cavity; at least one partition layer disposed in the second cavity, the at least one partition layer being used to divide the second cavity into a plurality of sub-cavities distributed along a target direction and respectively surrounding the first shell, the target direction being a direction pointing from the first shell to the second shell; The plurality of sub-cavities distributed along the target direction are respectively filled with phase change materials with successively increasing phase change temperatures.

2. The battery temperature control device according to claim 1, characterized in that: The phase change material includes a solid-liquid phase change material.

3. The battery temperature control device according to claim 1, characterized in that: The temperature regulating device further comprises: a plurality of heat sinks; The plurality of heat sinks are located in at least one of the sub-cavities and in contact with the phase change material in the sub-cavity. The heat sinks are connected to at least one of the outer surface of the first shell, the surface of the isolation layer, and the inner surface of the second shell.

4. The battery temperature control device according to claim 3, characterized in that: The temperature regulating device includes a said isolation layer; The plurality of sub-cavities include a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is located on a side of the partition layer close to the first shell, and the second sub-cavity is located on a side of the partition layer away from the first shell; The plurality of heat sinks are located in the second sub-cavity and connected to the surface of the isolation layer.

5. The battery temperature control device according to claim 1, characterized in that: The temperature regulating device further comprises: a plurality of pressure regulating valves, wherein the plurality of pressure regulating valves are respectively arranged on the cavity walls of the plurality of sub-cavities; The pressure regulating valve is used to connect the interior of the sub-cavity with the exterior of the sub-cavity when the phase change material undergoes phase change.

6. The battery temperature control device according to claim 1, characterized in that: The temperature regulating device further comprises: a plurality of mutually parallel heat exchange pipes; The heat exchange pipes are connected to the outer side surface of the second shell, and the flow directions of the heat exchange medium in two adjacent heat exchange pipes are different.

7. The battery temperature control device according to claim 6, characterized in that: The heat exchange pipe is connected to the heat dissipation pipe of the heat source, and the heat source includes a drive motor and / or an engine; The heat dissipation pipe is used to absorb the heat generated by the heat source; The heat exchange pipe is used to transfer the heat absorbed by the heat dissipation pipe to the phase change material.

8. A battery temperature control system, characterized in that: The temperature control system includes a plurality of temperature control devices according to any one of claims 1 to 7, and the second shells of the plurality of temperature control devices are connected to each other.

9. The battery temperature control system according to claim 8, characterized in that: The second shell is in a polygonal cylindrical shape, and at least one side surface of the second shells of two adjacent temperature regulating devices is connected to each other.

10. A vehicle, characterized in that: The vehicle includes the battery temperature control device according to any one of claims 1 to 7, or includes the battery temperature control system according to any one of claims 8 to 9.

Images