CN220710433U

CN220710433U - Thermal management system, power utilization device and energy storage device

Info

Publication number: CN220710433U
Application number: CN202322215720.7U
Authority: CN
Inventors: 李清; 黄小腾; 叶伟达; 李金奎; 欧阳诗洁
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-04-02
Anticipated expiration: 2033-08-17

Abstract

The application provides a thermal management system, power consumption device and energy storage device, thermal management system includes first accuse temperature return circuit, first accuse temperature return circuit is including compressor, first heat transfer subassembly, throttling element and the second heat transfer subassembly that sets gradually, first heat transfer subassembly is including parallelly connected first heat exchanger and the second heat exchanger that sets up, the second heat transfer subassembly is including parallelly connected third heat exchanger and the fourth heat exchanger that sets up, first heat exchanger and third heat exchanger all are used for carrying out the heat transfer with holding the cabin, the fourth heat exchanger is used for with battery monomer heat transfer. A first branch is arranged between the second heat exchange assembly and the inlet of the first heat exchange assembly, and the first branch is connected with the compressor in parallel, so that the heat management system can be switched between the first branch and the compressor. The embodiment of the application can prolong the service life of the compressor, reduce the energy consumption caused by the operation of the compressor, and reduce the operation energy consumption generated in the long-term use process of the thermal management system.

Description

Thermal management system, power utilization device and energy storage device

Technical Field

The application relates to the technical field of batteries, in particular to a thermal management system, an electric device and an energy storage device.

Background

The battery cell is widely applied to electric devices such as electric automobiles, ships, spacecrafts and the like, and along with the improvement of the technical level, the thermal management technology of the electric devices is also increasingly important. However, the existing thermal management solution has the problem of high energy consumption, and is easy to adversely affect the endurance mileage of the electric device.

Disclosure of Invention

In view of the above, the present application provides a thermal management system, an electric device, and an energy storage device, which can reduce energy consumption.

In one aspect, the embodiment of the application provides a thermal management system, the thermal management system includes first accuse temperature return circuit, first accuse temperature return circuit is including compressor, first heat transfer subassembly, throttling element and the second heat transfer subassembly that sets gradually, first heat transfer subassembly is including parallelly connected first heat exchanger and the second heat exchanger that sets up, the second heat transfer subassembly is including parallelly connected third heat exchanger and the fourth heat exchanger that sets up, first heat exchanger and third heat exchanger all are used for carrying out heat transfer with holding the cabin, the fourth heat exchanger is used for with the heat transfer of battery monomer.

A first branch is arranged between the second heat exchange assembly and the inlet of the first heat exchange assembly, and the first branch is connected with the compressor in parallel, so that the heat management system can be switched between the first branch and the compressor.

In the above scheme, the thermal management system provided by the embodiment of the application can have multiple operation modes, so that the thermal management system can be matched with the requirements of the power utilization device in different scenes, and has stronger flexibility. When the external environment temperature is higher, and at least one of the battery cell and the accommodating cabin needs to be cooled. The compressor can be controlled to be conducted, so that at least one of the battery monomer and the accommodating cabin can be cooled. In some other cases, the thermal management system may control the first leg to conduct. In the process, the compressor is not required to be used for carrying out pressurization treatment on the first heat exchange medium, so that the operation time of the compressor can be reduced, the service life of the compressor is prolonged, the energy consumption caused by the operation of the compressor can be reduced, and the operation energy consumption of the thermal management system in the long-term use process is reduced.

In some embodiments, the first temperature control circuit further includes a second branch and a first driving member disposed on the second branch, wherein one end of the second branch is connected to the outlet of the first heat exchange assembly, and the other end is connected to the inlet of the fourth heat exchanger.

In the scheme, the second branch is additionally arranged in the first temperature control loop, and the first driving piece is arranged on the second branch, so that the first heat exchange medium can circularly flow in the first branch, the first heat exchanger, the second branch and the fourth heat exchanger under the driving of the first driving piece, and therefore the control of the temperature of the accommodating cabin and the battery monomer can be realized under the condition that a compressor is not used, and the energy consumption waste of the thermal management system is reduced.

In some embodiments, the second branch includes a first flow channel, a second flow channel and a third flow channel connected to the first flow channel and disposed in parallel with each other, and the second flow channel is provided with a first heating element. Wherein the thermal management system is configured to be switchable between the second flow channel and the third flow channel to regulate the temperature of the battery cell when the second branch is in communication with the fourth heat exchanger.

In the scheme, the second flow channel and the third flow channel which are connected in parallel are arranged on the second branch channel, and the first heating piece is arranged on the second flow channel, so that the flexibility of the thermal management system can be improved, the usable scene type of the thermal management system is increased, and the thermal management system has strong practicability and flexibility.

In some embodiments the first temperature control circuit further comprises a first gas-liquid separator disposed between the first driver inlet and the second heat exchanger outlet.

In the above scheme, the first gas-liquid separator can separate the liquid substance from the gaseous substance, so that the first driving piece can suck more liquid first heat exchange medium, the probability of the gaseous first heat exchange medium entering the first driving piece is reduced, and the whole circulation loop can be applied to the situation of lower environmental temperature. For example, the method can be applied to the scene that the ambient temperature is lower than the battery cell temperature by 3 ℃, so that the applicable scene range of the heat pipe system is improved, and the applicability is improved.

In some embodiments, the first temperature control circuit further comprises a second gas-liquid separator disposed between the compressor inlet and the second heat exchange assembly outlet.

In the scheme, the probability of liquid substances entering the compressor is reduced through the second gas-liquid separator, so that more gaseous first heat exchange medium can enter the compressor, and the operation reliability of the compressor can be improved.

In some embodiments, the first temperature control circuit further comprises a one-way valve configured to allow fluid to move in a single direction.

In the scheme, the check valve can reduce the risk of countercurrent of the first heat exchange medium at least at part of the position of the thermal management system, so that the internal circulation reliability of the thermal management system is improved. The risk of overlarge local pressure of the thermal management system is reduced, the probability of damage to pipelines and parts is reduced, and the overall reliability is improved. And due to the existence of the one-way valve, the capacity of the first heat exchange medium in the thermal management system can be moderately increased, so that the thermal control effect of the thermal management system is improved.

In some embodiments, a one-way valve is provided between the compressor outlet and the second heat exchanger inlet.

In the scheme, the existence of the one-way valve can allow the first heat exchange medium to flow into the first heat exchanger or the second heat exchanger from the compressor, and reduce the probability of backflow of the first heat exchange medium to the compressor, so that the risk of faults of the compressor caused by backflow of the first heat exchange medium is reduced, and the operation reliability of the compressor is improved.

In some embodiments, the first branch is provided with a one-way valve.

In the scheme, the check valve can allow the first heat exchange medium to enter the fourth heat exchanger from the first branch, and reduce the probability of backflow of the first heat exchange medium into the second heat exchanger, so that the risk of overlarge pressure in the second heat exchanger is reduced, and the operation reliability of the second heat exchanger is improved.

In some embodiments, a one-way valve is disposed between the first heat exchanger outlet and the throttle inlet.

In the scheme, the check valve can allow the first heat exchange medium to enter the throttling part from the first heat exchanger, and reduce the probability of backflow of the first heat exchange medium into the first heat exchanger, so that the risk of overlarge pressure in the first heat exchanger is reduced, and the operation reliability of the first heat exchanger is improved.

In some embodiments, a one-way valve is disposed between the throttle outlet and the fourth heat exchanger inlet.

In the scheme, the check valve can allow the first heat exchange medium to enter the fourth heat exchanger from the throttling part, and reduce the probability of backflow of the first heat exchange medium into the throttling part, so that the risk of overlarge pressure in the throttling part is reduced, and the operation reliability of the throttling part is improved.

In some embodiments, the second heat exchanger is configured to exchange heat with an external environment.

In the above scheme, compared with the technical scheme that the first heat exchange medium exchanges heat with other fluid media through the second heat exchanger, the design ensures that the second heat exchanger is only provided with the flow channel for the flow of the first heat exchange medium, and the flow channel for the passage of other fluids is not required, so that the number of the flow channels in the second heat exchanger is reduced, the structural complexity of the second heat exchanger is reduced, the risk of liquid leakage of the second heat exchanger caused by other fluid media is reduced, and the overall reliability is improved.

In some embodiments, the thermal management system further comprises a second temperature control loop comprising a sixth heat exchanger for heat exchange with the first electrical device, and a fifth heat exchanger.

In the scheme, the first temperature control loop and the second temperature control loop can realize heat exchange between the first temperature control loop and the second temperature control loop by means of the fifth heat exchanger, so that redundant heat in the first temperature control loop/the second temperature control loop can be transferred to the other temperature control loop, the recycling of waste heat is realized, and the energy consumption is reduced.

In some embodiments, the fourth flow passage is disposed between the second assembly outlet and the compressor inlet.

In the above scheme, the fourth flow passage is arranged at a position close to the inlet of the compressor, so that the temperature in the fourth flow passage is smaller than that in the fifth flow passage, and heat in the second temperature control loop is transferred to the first temperature control loop, so that the energy consumed by the first temperature control loop is reduced, and the waste heat recovery function is realized.

In some embodiments, the second temperature control loop includes a seventh heat exchanger for exchanging heat with an external environment to regulate a temperature of the fluid within the second temperature control loop.

In the above scheme, the seventh heat exchanger can realize heat exchange between the second heat exchange medium and the external environment. On the basis, the seventh heat exchanger is used for facilitating the temperature adjustment of the first electric device, and the first temperature control loop and the second temperature control loop can exchange heat through the fifth heat exchanger, so that the fifth heat exchanger can indirectly play a role in adjusting the heat of the first temperature control loop, the heat utilization rate in the whole heat management system can be improved, and the energy loss is reduced.

In some embodiments, the second temperature control circuit includes a sixth flow channel, a seventh flow channel and an eighth flow channel connected with the sixth flow channel and arranged in parallel with each other, the sixth heat exchanger is arranged in the seventh flow channel, the fifth flow channel is communicated with the eighth flow channel, and the seventh heat exchanger is arranged in the sixth flow channel. Wherein the thermal management system is configured to control communication between at least two of the sixth flow passage, the seventh flow passage, and the eighth flow passage.

In the above scheme, the sixth heat exchanger, the fifth flow channel and the seventh heat exchanger are arranged on different branches, and the conduction between the different branches is controlled, so that the second temperature control loop has multiple operation modes, and the requirements of different situations are met. And can also realize the control of heat exchange or heat isolation between first accuse temperature return circuit and the second accuse temperature return circuit, have stronger practicality and flexibility.

In some embodiments, the second temperature control circuit further comprises a second driver.

In the above scheme, the second driving piece is arranged in the second temperature control loop, so that the second heat exchange medium can circularly flow in the second temperature control loop, and the operation requirement of the second temperature control loop is met.

In a second aspect, embodiments of the present application provide an electrical device including a housing, a battery cell, and a thermal management system of any of the foregoing embodiments for regulating the temperature of the housing and the battery cell.

In a third aspect, embodiments of the present application provide an energy storage device including a containment compartment, a battery cell, and a thermal management system of any of the foregoing embodiments, the thermal management system configured to regulate a temperature of the containment compartment and the battery cell.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a vehicle according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an energy storage device according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a thermal management system according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a thermal management system according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a thermal management system according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 13 is a schematic structural view of yet another thermal management system provided in an embodiment of the present application;

FIG. 14 is a schematic diagram of a thermal management system according to an embodiment of the present application;

FIG. 15 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

FIG. 16 is a schematic diagram of a circulation loop in a thermal management system according to an embodiment of the present application;

Fig. 17 is a schematic structural diagram of a circulation loop in a thermal management system according to an embodiment of the present application.

In the accompanying drawings:

1000. a vehicle;

100. a battery cell; 110. a battery pack; 200. a controller; 300. a motor; 400. a thermal management system; 500. a housing compartment; 600. an energy storage device;

10. a compressor;

20. a first heat exchange assembly; 21. a first heat exchanger; 22. a second heat exchanger;

30. a throttle member;

40. a second heat exchange assembly; 41. a third heat exchanger; 42. a fourth heat exchanger;

50. a fifth heat exchanger;

60. a sixth heat exchanger;

70. a seventh heat exchanger;

k1, a first temperature control loop; k2, a second temperature control loop;

q1, a first driving member; q2, a second driving member;

r1, a first heating element; r2, a second heating element;

y1, a first gas-liquid separator; y2, a second gas-liquid separator;

F. a one-way valve;

z1, a first branch; z2, a second branch;

l1, a first runner; l2, a second runner; l3, a third runner; l6, a sixth runner; l7, a seventh runner; l8, an eighth runner;

d1, a first end; d2, a second end; d3, a third end; d4, a fourth end.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical 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. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In this embodiment of the present application, the battery cell may be a secondary battery, and the secondary battery refers to a battery cell that can activate the active material by charging after discharging the battery cell and continue to use.

The battery cell may be a lithium 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 hydrogen battery, a nickel cadmium battery, a lead storage battery, or the like, which is not limited in the embodiment of the present application.

The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge of the battery cell, active ions (e.g., lithium ions) are inserted and extracted back and forth between the positive electrode and the negative electrode. The separator is arranged between the positive electrode and the negative electrode, can play a role in preventing the positive electrode and the negative electrode from being short-circuited, and can enable active ions to pass through.

In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

As an example, the positive electrode current collector has two surfaces opposing in its own thickness direction, and the positive electrode active material is provided on either or both of the two surfaces opposing the positive electrode current collector.

As an example, the positive electrode current collector may employ a metal foil or a composite current collector. For example, as the metal foil, silver-surface-treated aluminum or stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as a battery positive electrode active material may be used. These positive electrode active materials may be used alone or in combination of two or more. Examples of the lithium-containing phosphate may include, but are not limited to, at least one of lithium iron phosphate (e.g., liFePO4 (which may also be abbreviated as LFP)), a composite of lithium iron phosphate and carbon, lithium manganese phosphate (e.g., liMnPO 4), a composite of lithium manganese phosphate and carbon, lithium manganese phosphate, and a composite of lithium manganese phosphate and carbon.

In some embodiments, the negative electrode may be a negative electrode tab, which may include a negative electrode current collector.

As an example, the negative electrode current collector may employ a metal foil, a foam metal, or a composite current collector. For example, as the metal foil, silver-surface-treated aluminum or stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel, titanium, or the like can be used. The foam metal can be foam nickel, foam copper, foam aluminum, foam alloy, foam carbon and the like. The composite current collector may include a polymeric material base layer and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel alloy, titanium alloy, silver alloy, etc.) on a polymer material substrate (e.g., a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

As an example, the anode current collector has two surfaces opposing in its own thickness direction, and the anode active material is provided on either or both of the two surfaces opposing the anode current collector.

As an example, a negative active material for a battery cell, which is well known in the art, may be used. As an example, the anode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, and the like.

In some embodiments, the material of the positive electrode current collector may be aluminum and the material of the negative electrode current collector may be copper.

In some embodiments, the electrode assembly further includes a separator disposed between the positive electrode and the negative electrode.

In some embodiments, the separator is a separator film. The type of the separator is not particularly limited, and any known porous separator having good chemical stability and mechanical stability may be used.

As an example, the main material of the separator may be at least one selected from glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.

In some embodiments, the separator is a solid state electrolyte. The solid electrolyte is arranged between the anode and the cathode and plays roles in transmitting ions and isolating the anode and the cathode.

In some embodiments, the battery cell further includes an electrolyte that serves to conduct ions between the positive and negative electrodes. The type of electrolyte is not particularly limited in this application, and may be selected according to the need. The electrolyte may be liquid, gel or solid.

In some embodiments, the electrode assembly is a rolled structure. The positive plate and the negative plate are wound into a winding structure.

In some embodiments, the electrode assembly is a lamination stack.

In some embodiments, the electrode assembly may have a cylindrical shape, a flat shape, a polygonal column shape, or the like.

In some embodiments, the electrode assembly is provided with tabs that can conduct current away from the electrode assembly. The tab includes a positive tab and a negative tab.

In some embodiments, the battery cell may include a housing. The case is used to encapsulate the electrode assembly, the electrolyte, and the like. The shell can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), an aluminum-plastic film or the like.

In some embodiments, the housing may be provided with functional components such as electrode terminals. The electrode terminals may be used to be electrically connected with the electrode assembly for outputting or inputting electric power of the battery cells.

In some embodiments, a current collecting member may be disposed within the case, and the electrode assembly may be electrically connected to the case or an electrode terminal disposed on the case through the current collecting member.

As examples, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shaped battery cell, including a square-case battery cell, a blade-shaped battery cell, a polygonal-prismatic battery cell, such as a hexagonal-prismatic battery cell, or the like.

Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

In some embodiments, the battery may be a battery module, and when there are a plurality of battery cells, the plurality of battery cells are arranged and fixed to form one battery module.

In some embodiments, the battery may be a battery pack including a case and a battery cell, the battery cell or battery module being housed in the case.

In some embodiments, the tank may be part of the chassis structure of the vehicle. For example, a portion of the tank may become at least a portion of the floor of the vehicle, or a portion of the tank may become at least a portion of the cross member and the side member of the vehicle.

In the power utilization device and the energy storage device using the battery monomer, the accommodating cabin and the like are easy to be used for a long time or the condition of overhigh temperature occurs under the environment conditions of high temperature and the like, and the experience of personnel in the accommodating cabin and the normal use of the power utilization device are easy to be influenced. In the related art, a thermal management system can be used to regulate and change the temperature of the internal components and the space structure of the electric device, but the current thermal management system still has the problem of excessive energy consumption.

The technical scheme described in the embodiment of the application is applicable to an electric device using a battery cell, such as a vehicle, a ship, a spacecraft, and the like, wherein the vehicle is, for example, a fuel automobile, a gas automobile or a new energy automobile, and the spacecraft is, for example, an airplane, a rocket, a space plane, a spacecraft, and the like.

The battery cells described in the embodiments of the present application are not limited to the above-described electric devices, but for brevity of description, the following embodiments are described by taking electric vehicles as examples.

Referring to fig. 1, fig. 1 is a simplified schematic diagram of a vehicle 1000 according to an embodiment of the disclosure. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery cell 100 and the thermal management system may be provided in the interior of the vehicle 1000, and specifically, for example, the battery cell 100 and the thermal management system may be provided in the bottom or the head or the tail of the vehicle 1000. The battery cell 100 may be used for power supply of the vehicle 1000, for example, the battery cell 100 may serve as an operating power source of the vehicle 1000. The thermal management system may regulate the temperature of the battery cell 100, where reference to temperature regulation includes, but is not limited to, cooling the battery cell 100, and may include heating the battery cell 100.

The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being used, for example, to control a battery to power the motor 300. The battery may be used for starting, navigating, etc. the vehicle 1000, of course, the battery cell 100 may also be used to drive the vehicle 1000, instead of or in part instead of fuel or natural gas, to provide drive for the vehicle 1000.

The vehicle 1000 may further include a receiving compartment (not shown) for providing a certain receiving space for passengers, so that the vehicle 1000 can carry a certain number of passengers via the receiving compartment.

In addition, the thermal management system provided by the embodiment of the application is also applicable to the energy storage device.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an energy storage device 600 according to some embodiments of the present application, where the energy storage device 900 includes a battery cell 100, a housing cabin 500 and a thermal management system 400, and the housing cabin 500 has a certain housing space therein, and personnel and some components can enter the housing cabin 500. The energy storage device 600 may include a plurality of battery packs 110, where each battery pack 110 includes a plurality of battery cells 100. Thermal management system 400 is a processing system for thermally managing battery cells 100 and containment compartment 500. The thermal management system 400 may be respectively connected with at least a portion of the battery cells 100 through pipes to achieve thermal management of the battery cells 100.

The energy storage device 600 may be a container type energy storage system, or may be an energy storage system with other structural forms, which is not particularly limited in this embodiment. The battery cell 100 and the thermal management system 400 may be provided as a single unit, for example, integrated into a container body, or may be provided as a split type arrangement, and connected by a pipeline.

The specific structure of the thermal management system is described in detail below with reference to the accompanying drawings.

Referring to fig. 3, the thermal management system 400 includes a first temperature control circuit K1, the first temperature control circuit K1 includes a compressor 10, a first heat exchange assembly 20, a throttling element 30, and a second heat exchange assembly 40 sequentially disposed, the first heat exchange assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22 disposed in parallel, the second heat exchange assembly 40 includes a third heat exchanger 41 and a fourth heat exchanger 42 disposed in parallel, the first heat exchanger 21 and the third heat exchanger 41 are both used for exchanging heat with the accommodating cabin 500, and the fourth heat exchanger 42 is used for exchanging heat with the battery cell.

A first branch Z1 is provided between the outlet of the second heat exchange assembly 40 and the inlet of the first heat exchange assembly 20, the first branch Z1 being arranged in parallel with the compressor 10, so that the thermal management system 400 can be switched between the first branch Z1 and the compressor 10.

The heat management system is a loop system for adjusting and controlling the temperature or the temperature difference of the electric device by utilizing at least one means of heating or cooling according to the actual requirement of the electric device. The thermal management system 400 may control the circulation loop of different forms to conduct flow according to different practical situations.

The thermal management system 400 includes a first temperature control circuit K1, and a pipeline structure for flowing a first heat exchange medium is disposed in the first temperature control circuit K1. The first heat exchange medium may be a refrigerant, for example. The first temperature control circuit K1 includes a compressor 10, a first heat exchange assembly 20, a throttling member 30, and a second heat exchange assembly 40, and a first heat exchange medium can be circulated among the compressor 10, the first heat exchange assembly 20, the throttling member 30, and the second heat exchange assembly 40.

The throttle 30 is a flow control device, and the throttle 30 can regulate the flow of the first heat exchange medium. Illustratively, the throttling element 30 may include a throttle valve that may control the flow or shut-off of the first heat exchange medium at the line where the throttling element 30 is located in addition to functioning to regulate the flow of the first heat exchange medium.

The first heat exchange assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22 that are arranged in parallel, where the first heat exchanger 21 and the second heat exchanger 22 are components capable of realizing a heat exchange function, and the thermal management system 400 can respectively control the on and off of the first heat exchanger 21 and the second heat exchanger 22 according to different actual use situations. The thermal management system 400 has various control modes for the first heat exchanger 21 and the second heat exchanger 22, and for example, a control valve may be disposed at a pipeline where the first heat exchanger 21 and the second heat exchanger 22 are located, and control on conduction and closing of the first heat exchanger 21 and the second heat exchanger 22 may be implemented by using the control valve.

The first heat exchanger 21 is used for exchanging heat with the accommodating cabin 500, and when at least one of the compressor 10, the first heat exchanger 21, the throttling element 30 and the second heat exchange assembly 40 is in a communication state, the first heat exchanger 21 can function as a condenser, and at this time, the first heat exchange medium can transfer heat into the accommodating cabin 500 by means of the first heat exchanger 21.

The second heat exchanger 22 may take various forms, for example, the first heat exchange medium may exchange heat with ambient air via the second heat exchanger 22, or the first heat exchange medium may exchange heat with other fluid media via the second heat exchanger 22.

The second heat exchanger 22 assembly includes a third heat exchanger 41 and a fourth heat exchanger 42 that are arranged in parallel, and the third heat exchanger 41 and the fourth heat exchanger 42 are components capable of realizing a heat exchange function, and the thermal management system 400 can respectively control the on and off of the third heat exchanger 41 and the fourth heat exchanger 42 according to different actual conditions. Similar to the first heat exchange assembly 20, the thermal management system 400 has various control modes for the third heat exchanger 41 and the fourth heat exchanger 42, and for example, a control valve may be disposed at a pipeline where the third heat exchanger 41 and the fourth heat exchanger 42 are located, and control on turning on and off of the third heat exchanger 41 and the fourth heat exchanger 42 is implemented by using the control valve.

The third heat exchanger 41 is used for exchanging heat with the accommodating cabin 500, and the fourth heat exchanger 42 is used for exchanging heat with the battery cells. Referring to fig. 3 and 4, when the third heat exchanger 41, the compressor 10, at least one of the first heat exchange assembly 20, and the throttle 30 are in communication, the third heat exchanger 41 may function as an evaporator, and at this time, the first heat exchange medium may absorb a portion of heat in the accommodating compartment 500 by means of the third heat exchanger 41 to reduce the temperature in the accommodating compartment 500.

Similarly, referring to fig. 3 and 5, when at least one of the fourth heat exchanger 42, the compressor 10, the first heat exchange assembly 20 and the throttling element 30 are in the on state, the fourth heat exchanger 42 may function as an evaporator, and at this time, the first heat exchange medium may absorb part of the heat in the battery cell by means of the fourth heat exchanger 42, so as to reduce the temperature of the battery cell.

It should be noted that, according to different practical situations, the thermal management system 400 may only control one of the first heat exchanger 21 and the second heat exchanger 22 in the first heat exchange assembly 20 to be in a conductive state, or the thermal management system 400 may also control both the first heat exchanger 21 and the second heat exchanger 22 in the first heat exchange assembly 20 to be in a conductive state. The same heat management system 400 may control only one of the third heat exchanger 41 and the fourth heat exchanger 42 located within the second heat exchange assembly 40 to be in an on state, or the heat management system 400 may also control both the third heat exchanger 41 and the fourth heat exchanger 42 to be in an on state.

For example, as shown in fig. 4, the thermal management system 400 may control only the compressor 10, the second heat exchanger 22, the throttle 30, and the third heat exchanger 41 to be circulated, thereby achieving separate cooling of the accommodation compartment 500. Alternatively, as shown in fig. 4, the thermal management system 400 may control only the compressor 10, the second heat exchanger 22, the throttling element 30, and the fourth heat exchanger 42 to be circulated, thereby achieving separate cooling of the battery cells. Alternatively, referring to fig. 3 and 6, the thermal management system 400 may also control the compressor 10, the second heat exchanger 22, the throttling element 30, the third heat exchanger 41 and the fourth heat exchanger 42 to be turned on, and the first heat exchange medium flowing out of the throttling element 30 may flow into the third heat exchanger 41 and the fourth heat exchanger 42 respectively, so as to achieve simultaneous cooling of the battery cell and the accommodating cabin 500, and this method is suitable for situations such as summer where the external temperature is higher than that of the accommodating cabin 500 and the battery cell.

Optionally, referring to fig. 3 and 7, the thermal management system 400 may also control the compressor 10, the first heat exchanger 21, the throttling element 30, and the fourth heat exchanger 42 to be circularly conducted, so as to implement heating and defrosting of the accommodating cabin 500 and cooling of the battery cells, which is suitable for situations where the battery cells are higher than the external temperature and the accommodating cabin 500 is lower than the external temperature.

Further, a first branch Z1 is further disposed between the outlet of the second heat exchange assembly 40 and the inlet of the first heat exchange assembly 20, the first branch Z1 is disposed in parallel with the compressor 10, i.e. the first branch Z1 includes a first end D1 and a second end D2 opposite to each other, the first end D1 is disposed between the outlet of the compressor 10 and the inlet of the first heat exchange assembly 20, and the second end D2 is disposed between the inlet of the compressor 10 and the outlet of the second heat exchange assembly 40.

The thermal management system 400 may switch between the first branch Z1 and the compressor 10, and illustratively, control valves may be provided at the pipelines where the first branch Z1 and the compressor 10 are located, by which the first branch Z1 and the compressor 10 may be switched.

The presence of the first branch Z1 allows the thermal management system 400 to have more modes of operation, specifically, when the thermal management system 400 controls the compressor 10 to be in an on state and the first branch Z1 is in an off state, the compressor 10 may form a circulation loop together with the first heat exchange assembly 20, the throttling element 30 and the second heat exchange assembly 40, during which the compressor 10 may compress the low-pressure gaseous first heat exchange medium into the high-pressure gaseous first heat exchange medium to satisfy the thermal cycle requirement. When the thermal management system 400 controls the compressor 10 to be in the off state and the first branch Z1 is in the on state, the first heat exchange medium will not flow in the compressor 10, and the compressor 10 will not operate, so that energy loss caused by the operation of the compressor 10 can be reduced.

For example, referring to fig. 3 and 8, the first branch Z1, the first heat exchanger 21, the second heat exchanger 22 and the fourth heat exchanger 42 in the first temperature control circuit K1 may be mutually conducted, and at this time, the first heat exchange medium flowing out of the first branch Z1 sequentially enters the first heat exchanger 21 and the second heat exchanger 22, and then is converged into the fourth heat exchanger 42, and finally flows into the first branch Z1 to form a circulation circuit. In this process, if the ambient temperature is high, the second heat exchanger 22 may transfer ambient heat to the first heat exchange medium, which then transfers heat to the battery cell via the fourth heat exchanger 42, and transfers heat to the accommodating compartment 500 via the first heat exchanger 21, thereby achieving co-heating of the accommodating compartment 500 and the battery cell.

If the ambient temperature is lower and the temperature of the battery cell is higher, part of the heat in the battery cell can be transferred to the first heat exchange medium by means of the fourth heat exchanger 42, then the first heat exchange medium transfers part of the heat to the external environment by means of the second heat exchanger 22, and part of the heat is transferred to the accommodating cabin 500 by means of the first heat exchanger 21, so that the temperature of the battery cell is reduced and the heating of the accommodating cabin 500 is realized.

It should be noted that, when the thermal management system 400 controls the first branch Z1 to be in the on state, in order to meet the flow requirement of the first heat exchange medium, a driving device (not shown in the drawing) for driving the first heat exchange medium to flow may be disposed on the first branch Z1, or a driving device may be disposed at another pipeline position of the thermal management system 400.

In summary, the thermal management system 400 provided in the embodiments of the present application may have multiple operation modes, so as to match the needs of the electric device in different scenarios, and have a relatively strong flexibility. When the external environment temperature is high, and at least one of the battery cell and the accommodation compartment 500 needs to be cooled. Cooling of at least one of the battery cells and the accommodation compartment 500 may be achieved by controlling the compressor 10 to be on. In other cases, thermal management system 400 may control first leg Z1 to conduct. In this process, the compressor 10 is not required to perform pressurization treatment on the first heat exchange medium, so that the operation duration of the compressor 10 can be reduced, the service life of the compressor 10 can be prolonged, the energy consumption caused by the operation of the compressor 10 can be reduced, and the operation energy consumption of the thermal management system 400 in a long-term use process can be reduced.

In some embodiments, referring to fig. 9, the first temperature control circuit K1 further includes a second branch Z2 and a first driving member Q1 disposed on the second branch Z2, wherein one end of the second branch Z2 is connected to the outlet of the first heat exchange assembly 20, and the other end is connected to the inlet of the fourth heat exchanger 42.

The second branch Z2 includes a third end D3 and a fourth end D4 opposite to each other, and the third end D3 is connected to the outlet of the first heat exchange assembly 20, and the third end D3 is disposed between the outlet of the first heat exchange assembly 20 and the inlet of the throttling element 30. The first heat exchange assembly 20 comprises a first heat exchanger 21 and a second heat exchanger 22 arranged in parallel, so that the first heat exchange medium flowing out of at least one of the first heat exchanger 21 and the second heat exchanger 22 may be selectively admitted into the restriction 30 or into the second branch Z2 under control of the thermal management system 400. For example, a control valve may be provided on the second branch Z2.

The fourth end D4 of the second branch Z2 is connected to the inlet of the fourth heat exchanger 42, and the fourth end D4 is disposed between the outlet of the throttling element 30 and the inlet of the fourth heat exchanger 42, and the first heat exchange medium flowing out of the second branch Z2 can enter the fourth heat exchanger 42 through the fourth end D4.

On the basis, referring to fig. 9 and 10, the thermal management system 400 may control the first branch Z1, the first heat exchanger 21, the second heat exchanger 22, the second branch Z2, and the fourth heat exchanger 42 to be cyclically conducted. In this case, if the ambient temperature is high, the second heat exchanger 22 may transfer ambient heat to the first heat exchange medium, which then transfers heat to the battery cells by means of the fourth heat exchanger 42, and the first heat exchanger 21 transfers heat to the receiving compartment 500, so that the receiving compartment 500 and the battery cells are heated together. If the ambient temperature is lower and the temperature of the battery cell is higher, part of the heat in the battery cell can be transferred to the first heat exchange medium by means of the fourth heat exchanger 42, then the first heat exchange medium transfers part of the heat to the external environment by means of the second heat exchanger 22, and part of the heat is transferred to the accommodating cabin 500 by means of the first heat exchanger 21, so that the temperature of the battery cell is reduced and the accommodating cabin 500 is heated.

Further, the second branch Z2 is provided with a first driving element Q1, and the first driving element Q1 can drive the first heat exchange medium to circulate in the first branch Z1, the first heat exchanger 21, the second heat exchanger 22, the second branch Z2 and the fourth heat exchanger 42. Wherein the first driving member Q1 has various forms, the first driving member Q1 may include a fluorine pump, for example.

To sum up, in the embodiment of the present application, the second branch Z2 is additionally arranged in the first temperature control loop K1, and the first driving piece Q1 is disposed on the second branch Z2, so that the first heat exchange medium can realize the circulation flow in the first branch Z1, the first heat exchanger 21, the second heat exchanger 22, the second branch Z2 and the fourth heat exchanger 42 under the driving of the first driving piece Q1, and thus, the control of the temperature of the accommodating cabin 500 and the battery cell can be realized without using the compressor 10, which is helpful for reducing the energy consumption waste of the thermal management system 400.

It should be noted that, the second heating element R2 may be added in the accommodating cabin 500, and the second heating element R2 may heat the accommodating cabin 500. While the thermal management system 400 may control the first leg Z1, the first heat exchanger 21, the second heat exchanger 22, the second leg Z2, and the fourth heat exchanger 42 to be cycled on. In this case, the second heat exchanger 22 may transfer ambient heat into the first heat exchange medium, and then the first heat exchanger 21 and the second heating member R2 may together heat the accommodating chamber 500, thereby achieving rapid temperature rise of the accommodating chamber 500.

In some embodiments, referring to fig. 11, the second branch Z2 includes a first flow channel L1, a second flow channel L2 and a third flow channel L3 connected to the first flow channel L1 and disposed in parallel to each other, and a first heating element R1 is disposed on the second flow channel L2. Wherein the thermal management system 400 is configured to switch between the second flow path L2 and the third flow path L3 to regulate the temperature of the battery cells when the second leg Z2 is in communication with the fourth heat exchanger 42. Wherein, the "adjusting the temperature of the battery cell" mentioned herein includes increasing the temperature of the battery cell, that is, heating the battery cell; and also includes reducing the temperature of the battery cells, i.e., cooling the battery cells.

The second branch Z2 includes a first flow path L1, a second flow path L2, and a third flow path L3, where the second flow path L2 and the third flow path L3 are disposed in parallel. Alternatively, the first driving member Q1 may be disposed on the first flow path L1, with the third end D3 being located on the first flow path L1, and the second flow path L2 and the third flow path L3 meeting at the fourth end D4.

Further, the thermal management system 400 is configured to be switchable between the second flow path L2 and the third flow path L3 when the second leg Z2 is in communication with the fourth heat exchanger 42. That is, the thermal management system 400 may control the first flow path L1 to be in communication with the second flow path L2 to effect communication between the second leg Z2 and the fourth heat exchanger 42, or the thermal management system 400 may control the first flow path L1 to be in communication with the third flow path L3 to effect communication between the second leg Z2 and the fourth heat exchanger 42. Illustratively, the second flow path L2 and the third flow path L3 are provided with control valves.

On this basis, in the embodiment of the present application, the first heating element R1 is further disposed on the second flow path L2, referring to fig. 11 and 12, when the first heating element R1 is operated, the first heating element R1 may perform heating treatment on the first heat exchange medium flowing through the first heating element R1. Thus, when the second branch Z2 is conducted with the fourth heat exchanger 42 by means of the first flow channel L1 and the second flow channel L2, the first heating element R1 can heat the first heat exchange medium entering the fourth heat exchanger 42, so that the first heat exchange medium in a high temperature state can enter the fourth heat exchanger 42, and part of heat is transferred into the battery cell through the fourth heat exchanger 42, thereby realizing heating and temperature raising of the battery cell. This method is suitable for low-temperature environments such as winter, and the battery cells are heated and warmed.

Further alternatively, the first heating element R1 may include a temperature adjusting function, which can automatically adjust and change the heating power according to the heating requirement of the battery cell, so as to ensure that the first heat exchange medium entering the fourth heat exchanger 42 can be kept within a specific temperature range, and further achieve accurate temperature control of the battery cell.

In other cases, the second branch Z2 may be in communication with the fourth heat exchanger 42, and the battery cell may not need to be heated, so that the first flow path L1 may be selectively in communication with the third flow path. Specifically, the first branch Z1, the first heat exchanger 21, the second heat exchanger 22, the first flow path L1, the third flow path L3 and the fourth heat exchanger 42 may be conducted, and the housing compartment 500 and the battery cells may exchange heat with each other and with the external environment by means of the first temperature control circuit K1, without heating the first heat exchange medium by means of the first heating member R1.

To sum up, in the embodiment of the present application, by setting the second flow channel L2 and the third flow channel L3 connected in parallel on the second branch Z2 and setting the first heating element R1 on the second flow channel L2, the flexibility of the thermal management system 400 can be improved, the usable scene type of the thermal management system 400 can be increased, and the thermal management system 400 has strong practicability and flexibility.

In some embodiments, as shown in fig. 11, the first temperature control circuit K1 further includes a first gas-liquid separator Y1 disposed between the inlet of the first driving member Q1 and the outlet of the second heat exchanger 22.

The first gas-liquid separator Y1 is a separating device for separating gaseous substances from liquid substances. As can be seen from the foregoing, in some circulation circuits, the first driving member Q1 is a power source responsible for driving the flow of the first heat exchange medium. On the basis, in order to improve the operation effect of the first driving element Q1, the electric energy waste caused by the idling of the first driving element Q1 is reduced. According to the embodiment of the application, the first gas-liquid separator Y1 is arranged at the inlet of the first driving piece Q1, and the first gas-liquid separator Y1 can separate liquid substances from gaseous substances, so that the first driving piece Q1 can suck more liquid first heat exchange media, the probability that the gaseous first heat exchange media enter the first driving piece Q1 is reduced, and the whole circulation loop can be applied to a scene with lower ambient temperature. For example, the method can be applied to the scene that the ambient temperature is lower than the battery cell temperature by 3 ℃, so that the applicable scene range of the heat pipe system is improved, and the applicability is improved.

In some embodiments, the first temperature control circuit K1 further includes a second gas-liquid separator Y2 disposed between the inlet of the compressor 10 and the outlet of the second heat exchange assembly 40. Like the first gas-liquid separator Y1, the second gas-liquid separator Y2 also serves to separate gaseous substances from liquid substances.

When the thermal management system 400 switches the compressor 10 in an on state, the compressor 10 may draw in and compress the low temperature, low pressure gaseous first heat exchange medium into the high temperature, high pressure gaseous first heat exchange medium. In view of this, in the embodiment of the present application, the second gas-liquid separator Y2 is added at the inlet of the compressor 10, and the probability of the liquid substance entering the compressor 10 is reduced by the second gas-liquid separator Y2, so that more gaseous first heat exchange medium can enter the compressor 10, thereby improving the operation reliability of the compressor 10.

In some embodiments, as shown in fig. 11, the first temperature control circuit K1 further includes a one-way valve F configured to allow fluid movement in a single direction.

As can be seen from the foregoing, the thermal management system 400 may include various circulation circuits, and the thermal management system 400 may switch between circulation circuits according to the actual situation. In the process of switching between different circuits, the first heat exchange medium at some positions may have a backflow condition, which easily causes the pressure at the local position in the thermal management system 400 to be too high, so that the problems of pipeline collapse or damage to the components of the compressor 10 and the like occur.

In view of this, the embodiment of the present application adds the check valve F in the thermal management system 400, where the check valve F is a directional control valve, and the check valve F includes a water inlet and a water outlet, and the check valve F is configured to allow the liquid to move in a single direction, that is, the first heat exchange medium passing through the check valve F can only flow along the water inlet, and the heat exchange medium is difficult to flow back from the water outlet.

The provision of the check valve F can reduce the risk of occurrence of reverse flow of the first heat exchange medium at least at a part of the locations of the thermal management system 400, thereby improving the reliability of the internal circulation of the thermal management system 400. This reduces the risk of excessive local pressure in thermal management system 400, reduces the probability of damage to piping and components, and improves overall reliability. And due to the existence of the check valve F, the capacity of the first heat exchange medium in the thermal management system 400 can be moderately increased, so that the thermal control effect of the thermal management system 400 is improved. The number of the check valves F may be one, or the number of the check valves F may be plural.

The arrangement of the check valve F can take a variety of forms, and optionally a check valve F is provided between the outlet of the compressor 10 and the inlet of the second heat exchanger 22.

In the embodiment of the present application, the presence of the check valve F may allow the first heat exchange medium to flow from the compressor 10 into the first heat exchanger 21 or the second heat exchanger 22, and reduce the probability of the first heat exchange medium flowing back to the compressor 10, so as to reduce the risk of failure of the compressor 10 due to the backflow of the first heat exchange medium, and improve the operational reliability of the compressor 10.

In other embodiments, the first branch Z1 is provided with a one-way valve F.

In the embodiment of the present application, the presence of the check valve F may allow the first heat exchange medium to enter the fourth heat exchanger 42 from the first branch Z1, and reduce the probability of the first heat exchange medium flowing back into the second heat exchanger 22, so as to reduce the risk of excessive pressure inside the second heat exchanger 22 and improve the operational reliability of the second heat exchanger 22.

In other embodiments, a one-way valve F is provided between the outlet of the first heat exchanger 21 and the inlet of the restriction 30.

In the embodiment of the application, the existence of the check valve F can allow the first heat exchange medium to enter the throttling element 30 from the first heat exchanger 21, and reduce the probability of the first heat exchange medium flowing back into the first heat exchanger 21, so as to reduce the risk of overlarge pressure inside the first heat exchanger 21 and improve the operation reliability of the first heat exchanger 21.

In other embodiments, a one-way valve F is provided between the outlet of the restriction 30 and the inlet of the fourth heat exchanger 42.

In the embodiment of the present application, the presence of the check valve F may allow the first heat exchange medium to enter the fourth heat exchanger 42 from the throttling element 30, and reduce the probability of the first heat exchange medium flowing back into the throttling element 30, so as to reduce the risk of excessive pressure inside the throttling element 30 and improve the operational reliability of the throttling element 30.

Of course, in some embodiments, the number of the check valves F is plural, a part of the check valves F is disposed between the outlet of the compressor 10 and the inlet of the first heat exchange assembly 20, a part of the check valves F is disposed on the first branch Z1, a part of the check valves F is disposed between the outlet of the first heat exchanger 21 and the inlet of the throttling element 30, and a part of the check valves F is disposed between the outlet of the throttling element 30 and the outlet of the fourth heat exchanger 42.

In some embodiments, the second heat exchanger 22 is configured to exchange heat with an external environment.

Taking as an example that the battery cells are disposed in a vehicle, the thermal management system 400 is used to regulate the temperature of the battery cells within the vehicle. In this case, the second heat exchanger 22 may be provided at the front end of the vehicle, and heat exchange and cooling of the first heat exchange medium located in the second heat exchanger 22 may be achieved by the air flow generated when the vehicle is traveling.

Compared with the technical scheme that the first heat exchange medium exchanges heat with other fluid media through the second heat exchanger 22, the design ensures that only the flow channel for the first heat exchange medium to flow is needed inside the second heat exchanger 22, and the flow channel for other fluids to pass through is not needed, so that the number of the flow channels inside the second heat exchanger 22 is reduced, the structural complexity of the second heat exchanger 22 is reduced, the risk of liquid leakage of the second heat exchanger 22 caused by other fluid media can be reduced, and the overall reliability is improved.

In some embodiments, referring to fig. 13, the thermal management system 400 further includes a second temperature control loop K2 and a fifth heat exchanger 50, wherein the second temperature control loop K2 includes a sixth heat exchanger 60, and the sixth heat exchanger 60 is configured to exchange heat with the first electrical device.

The fifth heat exchanger 50 includes a fourth flow path and a fifth flow path (not shown) capable of performing heat exchange, the fourth flow path is disposed in the first temperature control circuit K1, and the fifth flow path is disposed in the second temperature control circuit K2.

The second temperature control loop K2 is provided with a pipeline structure for flowing a second heat exchange medium, and the first heat exchange medium may be a refrigerant and the second heat exchange medium may be a cooling liquid. The second temperature control circuit K2 comprises a sixth heat exchanger 60, the sixth heat exchanger 60 being able to exchange heat with the first electrical device, i.e. the second temperature control circuit K2 is able to regulate the temperature of the first electrical device by means of the sixth heat exchanger 60.

Optionally, taking the electric device as an example of a vehicle, the first electric device includes, but is not limited to, a driving motor, a speed reducer, a vehicle-mounted controller, a charging and power dividing module, and a large-screen host, further, the driving motor may include a front motor, a rear motor, and the like, the speed reducer may include a front speed reducer and a rear speed reducer, and the vehicle-mounted controller may include an electric control element such as a processor, a large-screen controller, a front motor controller, a rear motor controller, and an automatic driving controller.

In addition, the thermal management system 400 further includes a fifth heat exchanger 50, the fourth flow channel in the fifth heat exchanger 50 is disposed in the first temperature control circuit K1, the fifth flow channel is disposed in the second temperature control circuit K2, and the first temperature control circuit K1 and the second temperature control circuit K2 can exchange heat with each other by means of the fifth heat exchanger 50. The fourth flow passage may be disposed between the compressor 10 and the first heat exchange assembly 20 in various arrangements in the first temperature control circuit K1, for example, so that the high-temperature and high-pressure first heat exchange medium generated by the compressor 10 may transfer heat to the second temperature control circuit K2 through the fifth heat exchanger 50 when the compressor 10 is operated, thereby achieving heating temperature control of the first electric device.

In the embodiment of the application, the heat exchange between the first temperature control loop K1 and the second temperature control loop K2 can be realized by means of the fifth heat exchanger 50, so that the redundant heat in the first temperature control loop K1/the second temperature control loop K2 can be transferred to the other, thereby realizing the recycling of waste heat and reducing the energy consumption.

In some embodiments, the fourth flow passage is disposed between the second assembly outlet and the inlet of the compressor 10.

From the foregoing, it can be seen that the first heat exchange medium entering the compressor 10 is typically at a low temperature and pressure when the compressor 10 is in operation. On the basis, the fourth flow passage is arranged at a position close to the inlet of the compressor 10, so that the temperature in the fourth flow passage is smaller than that in the fifth flow passage, and heat in the second temperature control loop K2 is transferred to the first temperature control loop K1, and the energy consumed by the first temperature control loop K1 is reduced, so that a waste heat recovery function is realized.

In some embodiments, referring to fig. 14, the second temperature control circuit K2 includes a seventh heat exchanger 70, and the seventh heat exchanger 70 is configured to exchange heat with an external environment to regulate a temperature of fluid in the second temperature control circuit K2.

In addition to the sixth heat exchanger 60, the second temperature control circuit K2 further includes a seventh heat exchanger 70, and similarly to the second heat exchanger 22, the seventh heat exchanger 70 may also exchange heat with the external environment. The design makes the seventh heat exchanger 70 only need to be provided with the flow channel for the second heat exchange medium to flow, and does not need to be provided with the flow channel for other fluids to pass through, so that the number of the flow channels in the seventh heat exchanger 70 is reduced, the structural complexity of the seventh heat exchanger 70 is reduced, the risk of liquid leakage of the seventh heat exchanger 70 caused by other fluid mediums can be reduced, and the overall reliability is improved.

Meanwhile, when the seventh heat exchanger 70 and the sixth heat exchanger 60 are in the on state, the first electric device can exchange heat with the external environment by means of the sixth heat exchanger 60 and the seventh heat exchanger 70. Specifically, when the temperature of the first electric device is higher than the ambient temperature, the first electric device may release a part of heat into the second heat exchange medium in the sixth heat exchanger 60, and then the second heat exchange medium transfers the heat to the external environment by means of the seventh heat exchanger 70, so as to realize cooling and refrigeration of the first electric device. Or when the ambient temperature is higher than the temperature of the first electrical device, ambient heat may be transferred to the second heat exchange medium through the seventh heat exchanger 70, and then the second heat exchange medium transfers heat to the first electrical device through the sixth heat exchanger 60 to effect a heating process of the first electrical device.

In addition, when the first temperature control loop K1 and the second temperature control loop K2 exchange heat through the fifth heat exchanger 50, a part of heat in the first temperature control loop K1 can be transferred to the second temperature control loop K2, and the heat can be transferred to the external environment through the seventh heat exchanger 70. Or part of heat in the external environment can also enter the second temperature control loop K2 through the seventh heat exchanger 70 and then be transferred to the first temperature control loop K1 through the second temperature control loop K2.

In summary, in the embodiment of the present application, by providing the seventh heat exchanger 70 in the second temperature control circuit K2, the seventh heat exchanger 70 may realize heat exchange between the second heat exchange medium and the external environment. On this basis, the seventh heat exchanger 70 is used to help to realize the temperature regulation of the first electric device, and since the first temperature control loop K1 and the second temperature control loop K2 can exchange heat through the fifth heat exchanger 50, the fifth heat exchanger 50 can indirectly play a role in regulating the heat of the first temperature control loop K1, so that the heat utilization rate in the overall thermal management system 400 can be improved, and the energy loss can be reduced.

In some embodiments, as shown in fig. 14, the second temperature control circuit K2 includes a sixth flow passage L6, and a seventh flow passage L7 and an eighth flow passage L8 connected to the sixth flow passage L6 and disposed in parallel to each other, the sixth heat exchanger 60 is disposed in the seventh flow passage L7, the fifth flow passage communicates with the eighth flow passage L8, and the seventh heat exchanger 70 is disposed in the sixth flow passage L6. Wherein the thermal management system 400 is configured to control conduction between at least two of the sixth flow path L6, the seventh flow path L7, and the eighth flow path L8.

The second temperature control circuit K2 includes a sixth flow path L6, a seventh flow path L7, and an eighth flow path L8, where the seventh flow path L7 and the eighth flow path L8 are disposed in parallel. Further, the thermal management system 400 may control at least one of the seventh flow passage L7 and the eighth flow passage L8 to communicate with the sixth flow passage L6. That is, the thermal management system 400 may control the sixth flow path L6 to be in communication with the seventh flow path L7, or may control the sixth flow path L6 to be in communication with the eighth flow path L8, or may control the seventh flow path L7 to be in communication with the eighth flow path L8, or may control the sixth flow path L6, the seventh flow path L7, and the eighth flow path L8 to be in communication. Illustratively, the sixth flow path L6, the seventh flow path L7, and the eighth flow path L8 are each provided with a control valve.

The sixth heat exchanger 60 is provided in the seventh flow path L7, the fifth flow path communicates with the eighth flow path L8, and the seventh heat exchanger 70 is provided in the sixth flow path L6. Referring to fig. 13 to 15, when the sixth flow path L6 and the seventh flow path L7 are turned on, the fifth flow path in the second temperature control circuit K2 is at a closed state, the first temperature control circuit K1 and the second temperature control circuit K2 do not exchange heat, the sixth heat exchanger 60 and the seventh heat exchanger 70 are at a mutually-conductive state, and the first electric device and the external environment can transfer heat therebetween by means of the second heat exchange medium.

When the sixth flow passage L6 is connected to the eighth flow passage L8, the second heat exchange medium can move in the fifth flow passage, so that the first temperature control circuit K1 and the second temperature control circuit K2 can realize heat transfer between the two by means of the fifth heat exchanger 50, and the second temperature control circuit K2 can realize heat transfer between the two and the external environment by means of the seventh heat exchanger 70, i.e. the first temperature control circuit K1 can realize indirect heat exchange with the external environment by means of the second temperature control circuit K2.

When the seventh flow channel L7 is conducted with the eighth flow channel L8, the second heat exchange medium can move in the fifth flow channel, so that the first temperature control loop K1 and the second temperature control loop K2 can realize heat transfer between the two by means of the fifth heat exchanger 50, and meanwhile, the second temperature control loop K2 can regulate the temperature of the first electric device, that is, the first electric device can transfer heat to the first temperature control loop K1 through the second temperature control loop K2, or the first temperature control loop K1 can transfer heat to the first electric device through the second temperature control loop K2, so as to realize heat recovery.

Referring to fig. 14 and 17, when the sixth flow channel L6, the seventh flow channel L7 and the eighth flow channel L8 are all turned on, the second heat exchange medium can move in the fifth flow channel, so that the first temperature control circuit K1 and the second temperature control circuit K2 can realize heat transfer between the two by means of the fifth heat exchanger 50, and the second temperature control circuit K2 can regulate the temperature of the first electric device and realize heat transfer with the external environment by means of the seventh heat exchanger 70, thereby realizing further recycling of heat.

In summary, in the embodiment of the present application, the sixth heat exchanger 60, the fifth flow channel and the seventh heat exchanger 70 are disposed on different branches, and the conduction between the different branches is controlled, so that the second temperature control loop K2 has multiple operation modes, thereby meeting the needs of different situations. And can also realize the control of heat exchange or heat isolation between first accuse temperature return circuit K1 and the second accuse temperature return circuit K2, have stronger practicality and flexibility.

In some embodiments, as shown in fig. 14, the second temperature control circuit K2 further includes a second driving member Q2.

Similar to the first driving member Q1, the second driving member Q2 is a power source in the second temperature control circuit K2, and can control the circulating flow of the second heat exchange medium in the second temperature control circuit K2. Illustratively, the second driver Q2 may include a liquid-cooled pump.

The second driving member Q2 has various arrangements, and in particular, the second driving member Q2 may be provided on one of the sixth flow path L6, the seventh flow path L7, and the eighth flow path L8. The second driving member Q2 may be disposed on the seventh flow path L7, for example.

In the embodiment of the application, the second driving piece Q2 is disposed in the second temperature control loop K2, so that the second heat exchange medium can circularly flow in the second temperature control loop K2, and therefore the operation requirement of the second temperature control loop K2 is met.

In a second aspect, as shown in fig. 1, the embodiment of the present application provides an electric device, including a housing compartment 500, a battery cell, and a thermal management system 400 in any of the foregoing embodiments, where the thermal management system 400 is configured to regulate the temperature of the housing compartment 500 and the battery cell.

In a third aspect, as shown in fig. 2, the present embodiment provides an energy storage device, including a housing compartment 500, a battery cell 100, and a thermal management system 400 in any of the foregoing embodiments, where the thermal management system 400 is configured to regulate the temperature of the housing compartment 500 and the battery cell 100.

According to some embodiments of the present application, referring to fig. 14, a thermal management system 400 includes a first temperature control circuit K1 and a second temperature control circuit K2, the first temperature control circuit K1 includes a compressor 10, a first heat exchange assembly 20, a throttling element 30 and a second heat exchange assembly 40 sequentially arranged, the first heat exchange assembly 20 includes a first heat exchanger 21 and a second heat exchanger 22 arranged in parallel, the second heat exchange assembly 40 includes a third heat exchanger 41 and a fourth heat exchanger 42 arranged in parallel, the first heat exchanger 21 and the third heat exchanger 41 are both used for exchanging heat with a containing compartment 500, the fourth heat exchanger 42 is used for exchanging heat with a battery cell, and the second heat exchanger 22 is used for exchanging heat with an external environment.

The first temperature control circuit K1 further includes a second branch Z2, where one end of the second branch Z2 is connected to the outlet of the first heat exchange assembly 20, and the other end is connected to the inlet of the fourth heat exchanger 42. The second branch Z2 includes a first flow path L1, and a second flow path L2 and a third flow path L3 connected to the first flow path L1 and disposed in parallel with each other, the second flow path L2 is provided with a first heating member R1, and the thermal management system 400 is configured to be able to switch between the second flow path L2 and the third flow path L3 to regulate the temperature of the battery cell when the second branch Z2 is in communication with the fourth heat exchanger 42.

Further, in the first temperature control circuit K1, a first gas-liquid separator Y1 is disposed between the inlet of the first driving member Q1 and the outlet of the second heat exchanger 22, and a second gas-liquid separator Y2 is disposed between the inlet of the compressor 10 and the outlet of the second heat exchange assembly 40. A check valve F is arranged between the outlet of the compressor 10 and the inlet of the first heat exchange assembly 20, the first branch Z1 is provided with the check valve F, the check valve F is arranged between the outlet of the first heat exchanger 21 and the inlet of the throttling element 30, and the check valve F is arranged between the outlet of the throttling element 30 and the inlet of the fourth heat exchanger 42.

The second temperature control circuit K2 includes a sixth flow path L6, and a seventh flow path L7 and an eighth flow path L8 connected to the sixth flow path L6 and disposed in parallel to each other, and the sixth heat exchanger 60 is disposed in the seventh flow path L7 and is used for performing heat exchange with the first electrical device; the seventh heat exchanger 70 is disposed in the sixth flow path L6 for exchanging heat with the external environment.

The thermal management system 400 further includes a fifth heat exchanger 50, where the fifth heat exchanger 50 includes a fourth flow channel and a fifth flow channel capable of performing heat exchange, the fourth flow channel is disposed in the first temperature control circuit K1 and located between the outlet of the second heat exchange component 40 and the inlet of the compressor 10, the fifth flow channel is disposed in the second temperature control circuit K2 and is in communication with the eighth flow channel L8, and the thermal management system 400 is configured to control conduction between at least two of the sixth flow channel L6, the seventh flow channel L7, and the eighth flow channel L8.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. The heat management system is characterized by comprising a first temperature control loop, wherein the first temperature control loop comprises a compressor, a first heat exchange component, a throttling element and a second heat exchange component which are sequentially arranged, the first heat exchange component comprises a first heat exchanger and a second heat exchanger which are arranged in parallel, the second heat exchange component comprises a third heat exchanger and a fourth heat exchanger which are arranged in parallel, the first heat exchanger and the third heat exchanger are both used for exchanging heat with a containing cabin, and the fourth heat exchanger is used for exchanging heat with a battery monomer;

the heat management system comprises a compressor, a first heat exchange assembly, a second heat exchange assembly, a first branch and a heat exchange assembly, wherein a first branch is arranged between an outlet of the second heat exchange assembly and an inlet of the first heat exchange assembly, and the first branch is connected with the compressor in parallel so that the heat management system can be switched between the first branch and the compressor.

2. The thermal management system of claim 1, wherein the first temperature control circuit further comprises a second leg and a first driver disposed on the second leg, one end of the second leg being connected to the outlet of the first heat exchange assembly and the other end being connected to the inlet of the fourth heat exchanger.

3. The thermal management system of claim 2, wherein the second branch comprises a first flow passage, and a second flow passage and a third flow passage connected to the first flow passage and arranged in parallel with each other, the second flow passage having a first heating element disposed thereon;

wherein the thermal management system is configured to be switchable between a second flow channel and a third flow channel to regulate the temperature of the battery cell when the second leg is in communication with the fourth heat exchanger.

4. A thermal management system according to claim 2 or 3, wherein the first temperature control circuit further comprises a first gas-liquid separator disposed between the first driver inlet and the second heat exchanger outlet.

5. The thermal management system of any one of claims 1-4, wherein the first temperature control circuit further comprises a second gas-liquid separator disposed between the compressor inlet and the second heat exchange assembly outlet.

6. The thermal management system of any of claims 1-5, wherein the first temperature control circuit further comprises a one-way valve configured to allow fluid movement in a single direction.

7. The thermal management system of claim 6, wherein the check valve is disposed between the compressor outlet and the first heat exchange assembly inlet; and/or the number of the groups of groups,

the first branch is provided with the one-way valve; and/or the number of the groups of groups,

the one-way valve is arranged between the outlet of the first heat exchanger and the inlet of the throttling element; and/or the number of the groups of groups,

the one-way valve is arranged between the outlet of the throttling element and the inlet of the fourth heat exchanger.

8. The thermal management system of any of claims 1-7, wherein the second heat exchanger is configured to exchange heat with an external environment.

9. The thermal management system of any one of claims 1 to 8, further comprising a second temperature control loop including a sixth heat exchanger for heat exchange with the first electrical device and a fifth heat exchanger;

the fifth heat exchanger comprises a fourth runner and a fifth runner which can perform heat exchange, the fourth runner is arranged in the first temperature control loop, and the fifth runner is arranged in the second temperature control loop.

10. The thermal management system of claim 9, wherein the fourth flow passage is disposed between the second heat exchange assembly outlet and the compressor inlet.

11. The thermal management system of claim 9 or 10, wherein the second temperature control loop includes a seventh heat exchanger for exchanging heat with an external environment to regulate a temperature of fluid within the second temperature control loop.

12. The thermal management system of claim 11, wherein the second temperature control circuit comprises a sixth flow passage and a seventh flow passage and an eighth flow passage connected to the sixth flow passage and disposed in parallel with each other, the sixth heat exchanger being disposed in the seventh flow passage, the fifth flow passage being in communication with the eighth flow passage, the seventh heat exchanger being disposed in the sixth flow passage;

wherein the thermal management system is configured to control conduction between at least two of the sixth flow passage, the seventh flow passage, and the eighth flow passage.

13. The thermal management system of any of claims 9 to 12, wherein the second temperature control circuit further comprises a second driver.

14. An electrical device comprising a receiving compartment, a battery cell and a thermal management system according to any one of claims 1 to 13 for regulating the temperature of the receiving compartment and the battery cell.

15. An energy storage device comprising a containment compartment, a battery cell, and a thermal management system according to any one of claims 1 to 13 for regulating the temperature of the containment compartment and the battery cell.