Thermal management system and energy storage container

Abstract

The utility model provides a heat management system and an energy storage container, the heat management system is used for conducting heat exchange on a plurality of batteries in an energy storage system, the heat management system comprises a refrigerant loop and a heating piece, and the refrigerant loop comprises a compressor, a first heat exchanger exchanging heat with the environment, a throttling piece and a second heat exchanger exchanging heat with the batteries which are connected in sequence; the heating piece is arranged on the side, away from the battery, of the second heat exchanger, and / or the heating piece is arranged on the side, away from the second heat exchanger, of the battery; wherein the refrigerant loop is used for cooling the battery, and the refrigerant loop and / or the heating piece are / is used for heating the battery. According to the arrangement, heat exchange is directly conducted on the battery only through the refrigerant through the refrigerant loop, only the refrigerant serves as a heat exchange medium, arrangement of heat exchange media such as water is reduced, and therefore the heat exchange efficiency of the battery can be improved; and the thermal management system is simple in structure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery thermal management, in particular to a thermal management system and an energy storage container. BACKGROUND

[0002] In the field of batteries, the battery has a high requirement on the temperature, and needs to be ensured to be in a certain temperature range by a thermal management system. In the process of implementing the present application, the inventors found that the prior art at least has the following technical problems: the prior art continuously exchanges heat between a certain temperature medium and the battery to control the battery at a suitable temperature, but the above-mentioned thermal management system has low heat exchange efficiency, especially low heating efficiency for the battery at extremely low temperature. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a thermal management system, which at least solves the problems of low heat exchange efficiency of the thermal management system and low heating efficiency at extremely low temperature. The present application also provides an energy storage container comprising the above-mentioned thermal management system.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] A thermal management system for heat exchange of a plurality of batteries in an energy storage system, comprising:

[0006] A refrigerant circuit comprising a compressor, a first heat exchanger for heat exchange with the environment, a throttling device, and a second heat exchanger for heat exchange with the battery, which are connected in sequence;

[0007] A heating device arranged on a side of the second heat exchanger away from the battery, and / or arranged on a side of the battery away from the second heat exchanger;

[0008] Wherein, the refrigerant circuit is used for cooling the battery, and the refrigerant circuit and / or the heating device are used for heating the battery.

[0009] Optionally, the refrigerant circuit further comprises a multi-way valve comprising a first interface connected with the outlet of the compressor, a second interface connected with the first heat exchanger, a third interface connected with the inlet of the compressor, and a fourth interface connected with the second heat exchanger, and in different modes, different interfaces of the first interface, the second interface, the third interface and the fourth interface are in communication with each other.

[0010] Optionally, a plurality of second heat exchangers are arranged in parallel, and each second heat exchanger exchanges heat with the same battery; the refrigerant circuit further comprises:

[0011] A first distribution head is arranged between the throttling device and the second heat exchanger, and the first distribution head comprises a plurality of first distribution interfaces, each of which is connected to one of the plurality of second heat exchangers in parallel.

[0012] A second distribution head is arranged between the second heat exchanger and the compressor, and the second distribution head comprises a plurality of second distribution interfaces, each of which is connected to one of the plurality of second heat exchangers in parallel.

[0013] Optionally, the plurality of second heat exchangers are arranged in parallel, and each of the second heat exchangers exchanges heat with the same battery; and the refrigerant circuit further comprises:

[0014] A first distribution head is arranged between the throttling device and the second heat exchanger, and the first distribution head comprises a plurality of first distribution interfaces, each of which is connected to one of the plurality of second heat exchangers in parallel.

[0015] A distribution manifold is arranged between the second heat exchanger and the compressor, and the distribution manifold is provided with at least one, and each of the distribution manifolds is provided with at least two third connection ports, which are used to connect the second heat exchanger and / or the remaining distribution manifolds.

[0016] Optionally, a first on-off valve is arranged between the second heat exchanger and the throttling device, and a second on-off valve is arranged between the second heat exchanger and the compressor.

[0017] Optionally, the throttling device is an electronic expansion valve.

[0018] An energy storage container comprising the thermal management system of any one of the above.

[0019] The thermal management system provided in the present application comprises a refrigerant circuit, which comprises a compressor, a first heat exchanger, a throttling device, and a second heat exchanger. The first heat exchanger is used to exchange heat with the environment, and the second heat exchanger is used to exchange heat with a battery. Since the energy efficiency ratio of a heat pump system decreases with the decrease of the ambient temperature, especially when the ambient temperature is below -10 degrees Celsius, the heat pump system may not work normally. In this case, the heating device is arranged on the side of the second heat exchanger away from the battery, and / or the heating device is arranged on the side of the battery away from the second heat exchanger. The heating device can heat the second heat exchanger to increase the temperature of the refrigerant in the second heat exchanger, so that the heat pump system can work, and the refrigerant circuit can heat the battery. When the heat pump system cannot work, the battery can also be directly heated by the heating device, so that the battery can be heated when the heat pump system cannot work. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0021] Figure 1 The structural schematic diagram of the heat management system provided in the present embodiment is shown in the figure.

[0022] Figure 2 The structural schematic diagram of the heat management system in the cooling mode is shown in the figure.

[0023] Figure 3 The structural schematic diagram of the heat management system in the heating mode is shown in the figure.

[0024] Figure 4 The structural schematic diagram of the heat management system in another embodiment is shown in the figure.

[0025] Figures 1-4 In the present embodiment, the heat management system comprises:

[0026] 1-refrigerant circuit, 2-heating element;

[0027] 11-compressor, 12-first heat exchanger, 13-throttling element, 14-second heat exchanger, 15-multi-way valve, 16-first distribution head, 17-second distribution head, 18-manifold, 19-first on-off valve, 110-second on-off valve. DETAILED DESCRIPTION

[0028] The present application provides a heat management system. The present application also provides an energy storage container comprising the heat management system.

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0030] As Figures 1-4As shown, the embodiment of the present application provides a heat management system, which is a component of the energy storage container and is used for heat exchange of the battery, that is, the heat management system is used for cooling or heating the battery to make the battery at a suitable working temperature. The heat management system comprises a refrigerant circuit 1 and a heating element 2, the refrigerant circuit 1 comprises a compressor 11, a first heat exchanger 12 for heat exchange with the environment, a throttling element 13 and a second heat exchanger 14 for heat exchange with the battery connected in sequence; the heating element 2 is arranged on the second heat exchanger 14 and / or the battery; wherein the refrigerant circuit 1 is used for cooling the battery, and the refrigerant circuit 1 and / or the heating element 2 are used for heating the battery.

[0031] Specifically, when the ambient temperature is high and the temperature of the battery is higher than the preset value, the battery needs to be cooled by using the heat management system, please refer to Figure 2 The specific working mode is as follows: first, the compressor 11 works to compress the refrigerant into high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant flows to the first heat exchanger 12, at this time the first heat exchanger 12 is a condenser, the high-temperature and high-pressure refrigerant exchanges heat with the outside environment in the first heat exchanger 12, and the high-temperature and high-pressure refrigerant becomes medium-temperature and high-pressure refrigerant; then, the medium-temperature and high-pressure refrigerant flowing out of the first heat exchanger 12 flows to the throttling element 13, the throttling element 13 throttles the medium-temperature and high-pressure refrigerant into low-temperature and low-pressure refrigerant, and the low-temperature and low-pressure refrigerant flows to the second heat exchanger 14; the low-temperature and low-pressure refrigerant flowing through the second heat exchanger 14 exchanges heat with the battery, and the cold energy in the refrigerant is transferred to the battery to cool the battery; then, the refrigerant flowing out of the second heat exchanger 14 flows back to the compressor 11, so as to complete a cooling cycle of the battery. When the ambient temperature is low and the temperature of the battery is lower than the preset value, the battery needs to be cooled by using the heat management system, please refer to Figure 2 The specific working mode is as follows: first, the compressor 11 works to compress the refrigerant into high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant flows to the second heat exchanger 14; then, the high-temperature and high-pressure refrigerant flowing through the second heat exchanger 14 exchanges heat with the battery, and the heat of the refrigerant is transferred to the battery to heat the battery; then, the refrigerant flowing out of the second heat exchanger 14 flows to the throttling element 13, the throttling element 13 throttles the refrigerant into low-temperature and low-pressure refrigerant; then, the low-temperature and low-pressure refrigerant flows to the first heat exchanger 12, at this time the first heat exchanger 12 is an evaporator, the low-temperature and low-pressure refrigerant exchanges heat with the outside environment in the first heat exchanger 12 to rise in temperature; then, the refrigerant flowing out of the first heat exchanger 12 flows back to the compressor 11, so as to complete a heating cycle of the battery.

[0032] It should be noted that when the battery is heated using the heat management system, when the ambient temperature is low, for example, the ambient temperature is minus 10 degrees Celsius to 10 degrees Celsius, at this time the refrigerant circuit 1 can work normally, at this time the battery is heated using the refrigerant circuit 1. When the ambient temperature is extremely low, for example, the ambient temperature is minus 10 degrees Celsius and below, at this time the refrigerant circuit 1 cannot work normally, at this time the refrigerant in the second heat exchanger 14 is heated by the heating element 2, so that the temperature of the refrigerant in the refrigerant circuit 1 is raised, and then the refrigerant circuit 1 can work normally to heat the battery; or the battery can be directly heated by the heating element 2 to directly heat the battery.

[0033] It should also be noted that the structure of the heating element 2 is not limited herein, and the exemplary heating element 2 can be a heat-conducting film wrapped around a heating resistance wire, and the heating element 2 is heated by energizing the resistance wire to heat the second heat exchanger 14 and / or the battery, and the heating of the second heat exchanger 14 and / or the battery by the heating element 2 is stopped by de-energizing the resistance wire.

[0034] The heat management system with the above structure, by providing the refrigerant circuit 1, the refrigerant circuit 1 includes the compressor 11, the first heat exchanger 12, the throttling element 13 and the second heat exchanger 14. Among them, the first heat exchanger 12 is used for heat exchange with the environment, the second heat exchanger 14 is used for heat exchange with the battery, and the refrigerant flows in the refrigerant circuit 1 to cool the battery, and the refrigerant flows in the refrigerant circuit 1 to heat the battery. By setting up like this, the battery is directly exchanged with the refrigerant by the refrigerant circuit 1, and only the refrigerant is used as the heat exchange medium in this application, and the setting of water and other heat exchange media is reduced, which can improve the heat exchange efficiency of the battery; and the heat management system is simple in structure.

[0035] In addition, the energy efficiency ratio of the heat pump system will decrease as the ambient temperature decreases, especially when it is minus 10 degrees Celsius and below, the heat pump system may not work normally, at this time the heating element 2 is provided on the second heat exchanger 14 and / or the battery, the heating element 2 can directly heat the second heat exchanger 14 to raise the temperature of the refrigerant located in the second heat exchanger 14, so that the heat pump system can work, and then the refrigerant circuit 1 heats the battery; when the heat pump system cannot work, the battery can also be directly heated by the heating element 2, so that the heating of the battery can also be realized when the heat pump system cannot work.

[0036] In some embodiments, the refrigerant circuit 1 further comprises a multi-way valve 15, the multi-way valve 15 comprises a first interface (a port shown) connected with the outlet of the compressor 11, Figure 1 a second interface (b port shown) connected with the first heat exchanger 12, Figure 1 a third interface (c port shown) connected with the inlet of the compressor 11, Figure 1 and a fourth interface (d port shown) connected with the second heat exchanger 14. Figure 1The first interface, the second interface, the third interface and the fourth interface are connected two by two, and in different modes, different interfaces of the first interface, the second interface, the third interface and the fourth interface are connected two by two. Specifically, in the cooling mode, the first interface and the second interface of the control multi-way valve 15 are connected and the third interface and the fourth interface of the control multi-way valve 15 are connected, so that the high-temperature and high-pressure refrigerant flowing out of the compressor 11 is guided to the first heat exchanger 12 and the refrigerant flowing out of the second heat exchanger 14 is guided to the inlet of the compressor 11. In the heating mode, the first interface and the fourth interface of the control multi-way valve 15 are connected and the second interface and the third interface of the control multi-way valve 15 are connected, so that the high-temperature and high-pressure refrigerant flowing out of the compressor 11 is guided to the second heat exchanger 14 and the refrigerant flowing out of the first heat exchanger 12 is guided to the inlet of the compressor 11.

[0037] It should be noted that the different interfaces of the first interface, the second interface, the third interface and the fourth interface are connected two by two, which means that any two of the above four interfaces can be connected, and the remaining two can also be connected, so that the refrigerant circuit 1 forms a closed loop.

[0038] It should be further noted that the multi-way valve 15 is a four-way valve, and of course can also be a five-way valve, a six-way valve, etc.

[0039] In addition, the above-mentioned multi-way valve 15 can also not be provided, for example, the outlet of the compressor 11 is connected to the first heat exchanger 12 and the second heat exchanger 14 through parallel first branch and second branch, the inlet of the compressor 11 is connected to the second heat exchanger 14 through parallel third branch and fourth branch, and adjusting valves are arranged in the first branch, the second branch, the third branch and the fourth branch, for example, the adjusting valves can be one-way valves and / or on-off valves, so that the adjustment of the refrigerant flow path can also be realized, so that the refrigerant flows forward in the refrigerant circuit 1 to cool the battery and the refrigerant flows reversely in the refrigerant circuit 1 to heat the battery.

[0040] Here, by providing the multi-way valve 15, the switching between the cooling mode and the heating mode can be conveniently realized to ensure that the battery is at an appropriate temperature under different ambient temperatures. Moreover, by providing the refrigerant heat exchanger, the refrigerant heat exchanger can reduce the temperature of the refrigerant flowing to the second heat exchanger 14 in the cooling mode of the refrigerant circuit 1, thereby improving the cooling efficiency of the refrigerant circuit 1 on the battery; and the refrigerant heat exchanger can reduce the supercooling degree of the refrigerant in the heating mode of the refrigerant circuit 1, thereby improving the uniform temperature performance when heating the battery.

[0041] In some embodiments, the heating element 2 is arranged on the side of the second heat exchanger 14 away from the battery. When the ambient temperature is extremely low, the refrigerant circuit 1 cannot work normally and cannot heat the battery. The heating element 2 is turned on to put the heating element 2 into working condition. The heating element 2 generates heat through the resistance wire and transmits the heat to the second heat exchanger 14 to heat the refrigerant in the second heat exchanger 14. The temperature of the refrigerant in the refrigerant system gradually rises to enable the refrigerant circuit 1 to operate. Then the refrigerant circuit 1 heats the battery. In this way, the refrigerant circuit 1 and the heating element 2 work together to heat the battery to achieve heating of the battery at extremely low temperature.

[0042] In addition, the heating element 2 can also be arranged at other positions of the second heat exchanger 14, for example, the heating element 2 is arranged on the circumferential side of the second heat exchanger 14. The heating element 2 can also be arranged between the second heat exchanger 14 and the heater, but in this case, the heater needs to be a heat-conducting element. When the refrigerant circuit 1 cannot heat the battery at extremely low temperature, the heating element 2 works to transmit heat to the second heat exchanger 14 and the battery respectively, which can improve the heating efficiency of the battery. It should be noted that the heating element 2 only needs to be in heat-conducting connection with the second heat exchanger 14.

[0043] In some embodiments, the heating element 2 is arranged on the side of the battery away from the second heat exchanger 14. When the ambient temperature is extremely low, the refrigerant circuit 1 cannot work normally and cannot heat the battery. The heating element 2 is turned on to put the heating element 2 into working condition. The heating element 2 generates heat through the resistance wire and transmits the heat directly to the battery to directly heat the battery. In this way, the battery can be directly and efficiently heated, and the heating efficiency of the battery can be improved.

[0044] In addition, the heating element 2 can also be arranged at other positions of the second heat exchanger 14, for example, the heating element 2 is arranged on the circumferential side of the battery. The heating element 2 can also be arranged between the second heat exchanger 14 and the heater, and the like. It should be noted that the heating element 2 only needs to be in heat-conducting connection with the battery.

[0045] In some embodiments, please refer to Figure 4The second heat exchanger 14 is provided in parallel with multiple second heat exchangers 14, and each second heat exchanger 14 exchanges heat with the same battery. The refrigerant circuit 1 further comprises a first distribution head 16 and a second distribution head 17; the first distribution head 16 is arranged between the throttling element 13 and the second heat exchanger 14, and the first distribution head 16 comprises multiple first distribution interfaces, which are respectively connected to the multiple second heat exchangers 14 arranged in parallel; the second distribution head 17 is arranged between the second heat exchanger 14 and the compressor 11, and the second distribution head 17 comprises multiple second distribution interfaces, which are respectively connected to the multiple second heat exchangers 14 arranged in parallel. Specifically, when the refrigerant circuit 1 is in the cooling mode, the refrigerant flows to the multiple second heat exchangers 14 arranged in parallel through the multiple first distribution interfaces of the first distribution head 16, and then the refrigerant flowing out of the multiple second heat exchangers 14 arranged in parallel is collected through the second distribution interfaces of the second distribution head 17 and flows back to the compressor 11; when the refrigerant circuit 1 is in the heating mode, the refrigerant flows to the multiple second heat exchangers 14 arranged in parallel through the multiple second distribution interfaces of the second distribution head 17, and then the refrigerant flowing out of the multiple second heat exchangers 14 arranged in parallel is collected through the first distribution interfaces of the first distribution head 16 and flows to the first heat exchanger 12. In this way, the refrigerant can be uniformly guided to the multiple second heat exchangers 14 through the first distribution head 16 in the cooling mode, and the refrigerant can be uniformly guided to the multiple second heat exchangers 14 through the second distribution head 17 in the heating mode, so that the uniformity of heat exchange between the second heat exchanger 14 and the corresponding battery can be improved, the multiple batteries can be ensured to be at an appropriate temperature, and the temperature difference between different batteries can be avoided to be too large.

[0046] In some embodiments, referring to Figures 1 to 3, the second heat exchanger 14 is provided in parallel with multiple second heat exchangers 14, and each second heat exchanger 14 exchanges heat with the same battery. The refrigerant circuit 1 further comprises a first distribution head 16 and a branch pipe 18, the first distribution head 16 is arranged between the throttling element 13 and the second heat exchanger 14, the first distribution head 16 comprises multiple first distribution interfaces, and the multiple first distribution interfaces are respectively connected to the multiple second heat exchangers 14 arranged in parallel; the branch pipe 18 is arranged between the second heat exchanger 14 and the compressor 11, the branch pipe 18 is provided with at least one, and each branch pipe 18 is provided with at least two third connection interfaces, and the third connection interfaces are used to connect the second heat exchanger 14 and / or the remaining branch pipe 18. That is, one end of the multiple second heat exchangers 14 arranged in parallel is connected to the first heat exchanger 12 through the first distribution head 16, and the other end of the multiple second heat exchangers 14 arranged in parallel is connected to the compressor 11 through the at least one branch pipe 18. Since the refrigerant flowing from the first heat exchanger 12 to the second heat exchanger 14 is in a gas-liquid two-phase state, that is, the refrigerant is in a mixed state of liquid and gas, the multiple first distribution interfaces of the first distribution head 16 can uniformly guide the refrigerant to the multiple second heat exchangers 14 arranged in parallel, and can uniformly guide the refrigerant in the gas-liquid two-phase state to the multiple second heat exchangers 14 arranged in parallel, so as to realize uniform heating of the battery through the multiple second heat exchangers 14. However, in the heating mode, the refrigerant entering the second heat exchanger 14 through the at least one branch pipe 18 is all high-temperature and high-pressure gas-phase refrigerant, and by controlling the pipe diameter of the pipe connected to the branch pipe 18, the pressure flowing to each second heat exchanger 14 arranged in parallel can be made the same, so as to realize uniform flow of the refrigerant to the multiple second heat exchangers 14 arranged in parallel. By such an arrangement, the uniformity of the heat exchange between the second heat exchanger 14 and the corresponding battery can also be improved, the multiple batteries can be ensured to be at an appropriate temperature, and the temperature difference between different batteries can be avoided to be too large.

[0047] In some embodiments, a first on-off valve 19 is arranged between the second heat exchanger 14 and the throttling element, and a second on-off valve 110 is arranged between the second heat exchanger 14 and the compressor 11. By such an arrangement, when it is necessary to stop the refrigerant circuit 1 in the working state, the refrigerant in the refrigerant circuit 1 needs to be gradually recovered, and here the opening and closing of the first on-off valve 19 and the second on-off valve 110 are adjusted to make the accumulator gradually recover the refrigerant in the refrigerant circuit 1, so as to avoid storing a large amount of refrigerant at the customer side of the refrigerant circuit 1.

[0048] Of course, at least one of the above-mentioned first on-off valve 19 and the second on-off valve 110 can be replaced by a solenoid valve, and by such an arrangement, the opening and closing of the solenoid valve can be controlled by the controller to realize the adjustment of the on-off of the refrigerant circuit 1, and the convenience of system adjustment can be improved.

[0049] In some embodiments, the throttling member 13 is an electronic expansion valve. Specifically, the electronic expansion valve can precisely control the opening degree by using an electrical signal, and efficiently realize opening degree adjustment while achieving energy saving effect. In addition, the electronic expansion valve has strong adaptability and can precisely adjust the opening degree in different environments.

[0050] In addition, the throttling member 13 can also be one of an electronic expansion valve or a capillary tube.

[0051] An energy storage container comprising the heat management system of any one of the above. Since the energy storage container comprises the heat management system, the beneficial effects brought by the heat management system are described above and will not be repeated here.

[0052] A method of operating a heat management system, suitable for the heat management system described above. Since the method of operating the heat management system is suitable for the heat management system described above, the beneficial effects brought by the method of operating the heat management system are described above and will not be repeated here.

[0053] The method of operating the heat management system comprises the following steps:

[0054] When the ambient temperature is high and the battery in working state needs to be cooled, the multi-way valve 15 is adjusted to make the first port and the second port communicate and the third port and the fourth port communicate, and the compressor 11 is controlled to start to cool the battery;

[0055] When the battery is in a non-working state, the heat management system is adjusted to a standby mode.

[0056] Specifically, when the ambient temperature is high and the battery is in a working state, that is, the scene needs to cool the battery, at this time the controller of the refrigerant circuit 1 controls the first interface and the second interface of the multi-way valve 15 to communicate, and controls the third interface and the fourth interface to communicate, so that the outlet of the compressor 11 is connected with the first heat exchanger 12, and the second heat exchanger 14 is connected with the inlet of the compressor 11. Then start the compressor 11, the compressor 11 works to compress the refrigerant into high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant flows to the first heat exchanger 12, at this time the first heat exchanger 12 is a condenser, and the high-temperature and high-pressure refrigerant is heat-exchanged with the outside environment in the first heat exchanger 12, and becomes medium-temperature and high-pressure refrigerant; then, the medium-temperature and high-pressure refrigerant flowing out of the first heat exchanger 12 flows to the throttling device 13, and the throttling device 13 throttles the medium-temperature and high-pressure refrigerant into low-temperature and low-pressure refrigerant, and the low-temperature and low-pressure refrigerant flows to the second heat exchanger 14; the low-temperature and low-pressure refrigerant flowing through the second heat exchanger 14 is heat-exchanged with the battery to transfer the cold energy in the refrigerant to the battery, so as to cool the battery; then, the refrigerant flowing out of the second heat exchanger 14 flows back to the compressor 11, so as to complete a cooling cycle of the battery, and the refrigerant continues to cool the battery through the second heat exchanger 14. When the battery is in a non-working state, if the thermal management system is still in a working state at this time, the refrigerant flowing to the second heat exchanger 14 is low-temperature and low-pressure refrigerant, and the surface of the second heat exchanger 14 has the risk of condensation and frosting, and the continuous cooling of the battery has a poor effect on the battery; at this time, when the battery is in a non-working state, the thermal management system is adjusted to a standby mode, so as to not only avoid the condensation and frosting of the second heat exchanger 14, but also protect the battery, and the power of the standby state thermal management system is lower and more energy-saving.

[0057] The basic principles of the application are described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the application. In addition, the above specific details are only for the purpose of example and understanding, and are not limited to the above specific details to realize the application.

[0058] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration must be as shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have", and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably, unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0059] It should also be noted that in the devices, apparatuses and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

[0060] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects without departing from the scope of the present application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0061] It should be understood that the adjectives "first", "second", "third", "fourth", "fifth" and "sixth" used in the embodiments of the present application are only used for more clearly describing the technical solutions and cannot be used to limit the protection scope of the present application.

[0062] The above description has been given for the purpose of illustration and description. Furthermore, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A thermal management system, characterized by, A heat exchange system for a plurality of batteries in an energy storage system, comprising: a refrigerant circuit comprising, in sequence, a compressor, a first heat exchanger for exchanging heat with an environment, a throttling device, and a second heat exchanger for exchanging heat with the batteries; a heating device arranged on a side of the second heat exchanger facing away from the batteries and / or arranged on a side of the batteries facing away from the second heat exchanger; wherein the refrigerant circuit is configured to cool the batteries, and the refrigerant circuit and / or the heating device are configured to heat the batteries.

2. The thermal management system of claim 1, wherein, The refrigerant circuit further comprises a multi-way valve comprising a first port connected to an outlet of the compressor, a second port connected to the first heat exchanger, a third port connected to an inlet of the compressor, and a fourth port connected to the second heat exchanger, and in different modes, different pairs of the first, second, third, and fourth ports are in communication.

3. The thermal management system of claim 1, wherein, The second heat exchangers are arranged in parallel, and each of the second heat exchangers exchanges heat with the same battery; the refrigerant circuit further comprises: a first distribution head arranged between the throttling device and the second heat exchangers, the first distribution head comprising a plurality of first distribution ports, each of the first distribution ports being connected to one of the second heat exchangers arranged in parallel; a second distribution head arranged between the second heat exchangers and the compressor, the second distribution head comprising a plurality of second distribution ports, each of the second distribution ports being connected to one of the second heat exchangers arranged in parallel.

4. The thermal management system of claim 1, wherein, The second heat exchangers are arranged in parallel, and each of the second heat exchangers exchanges heat with the same battery; the refrigerant circuit further comprises: a first distribution head arranged between the throttling device and the second heat exchangers, the first distribution head comprising a plurality of first distribution ports, each of the first distribution ports being connected to one of the second heat exchangers arranged in parallel; a manifold arranged between the second heat exchangers and the compressor, the manifold being provided with at least one, and each of the manifolds being provided with at least two third connection ports, the third connection ports being configured to connect the second heat exchangers and / or the remaining manifolds.

5. The thermal management system of claim 1, wherein, A first on-off valve is arranged between the second heat exchangers and the throttling device, and a second on-off valve is arranged between the second heat exchangers and the compressor.

6. The thermal management system of claim 1, wherein, The throttling device is an electronic expansion valve.

7. An energy storage container, characterized by A thermal management system comprising any one of claims 1-6.

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