Integrated energy storage battery thermal management system

Abstract

The invention belongs to the technical field of energy storage heat management, and discloses an integrated energy storage battery heat management system. The integrated energy storage battery heat management system comprises an integrated refrigerant module, an air heat exchange loop and an energy storage heat exchange loop. The integrated refrigerant module comprises at least two refrigerant loops which are arranged in parallel, each refrigerant loop is provided with a heating heat exchanger and a refrigerating heat exchanger, and the integrated refrigerant module is configured to selectively open at least one refrigerant loop so that the heating heat exchangers can provide heat to the outside, and the refrigerating heat exchangers can provide cold to the outside; the air heat exchange loop can be selectively connected to the heating heat exchanger or the refrigerating heat exchanger in a heat exchange mode so as to conduct heat exchange on the air heat exchanger in the air heat exchange loop. The energy storage heat exchange loop can be selectively connected to the heating heat exchanger, the refrigerating heat exchanger or the air heat exchange loop in a heat exchange mode so as to conduct heat exchange on an energy storage battery in the energy storage heat exchange loop. A refrigerant module and a water path module can be separated, the volume occupancy rate is reduced, and the integration degree is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage thermal management, and in particular to an integrated energy storage battery thermal management system. Background Art

[0002] With the continuous development of the energy storage field, the energy storage capacity is getting larger and larger, which causes the heat generation of the energy storage device to increase. Therefore, the demand for thermal management of energy storage batteries in the energy storage field is also increasing.

[0003] At present, for energy storage devices, especially large energy storage devices such as containers, the battery capacity is getting larger and larger, which makes the cooling capacity of the thermal management liquid cooling unit of the energy storage battery larger, which leads to the increase in the volume of the liquid cooling unit, resulting in an increase in the volume and occupied area of ​​the energy storage battery thermal management system, and low space utilization, which indirectly leads to a decrease in the volume occupancy rate of the battery in the container and a decrease in energy density. In addition, the installation and air outlet requirements of the liquid cooling unit of the energy storage battery thermal management system are different due to the different needs of different energy storage devices, resulting in different unit models. The thermal management system corresponding to each energy storage device is different and cannot be standardized, resulting in difficulties in the production and material management of each unit, waste of production and management resources, and high unit costs.

[0004] Therefore, there is an urgent need for an integrated energy storage battery thermal management system to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated energy storage battery thermal management system, which can separate the refrigerant module and the water module, and replace a large refrigerant module with several small refrigerant circuits, thereby reducing the volume occupancy, improving the integration, and being more standardized.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Integrated energy storage battery thermal management system, including:

[0008] An integrated refrigerant module, the integrated refrigerant module comprising at least two refrigerant circuits arranged in parallel, the refrigerant circuits having a heating heat exchanger and a cooling heat exchanger, the integrated refrigerant module being configured to selectively open at least one of the refrigerant circuits so that the heating heat exchanger provides heat to the outside and the cooling heat exchanger provides cooling to the outside;

[0009] An air heat exchange circuit, the air heat exchange circuit can be selectively connected to the heating heat exchanger or the cooling heat exchanger to exchange heat with the air heat exchanger in the air heat exchange circuit;

[0010] The energy storage heat exchange circuit can be selectively connected to the heating heat exchanger, the cooling heat exchanger or the air heat exchange circuit for heat exchange with the energy storage battery in the energy storage heat exchange circuit.

[0011] Optionally, the integrated energy storage battery thermal management system further includes a control valve assembly, which is capable of controlling the on-off connection between the air heat exchange circuit and the heating heat exchanger and the cooling heat exchanger, and controlling the on-off connection between the energy storage heat exchange circuit and the cooling heat exchanger, the heating heat exchanger and the air heat exchange circuit, respectively; so that the integrated energy storage battery thermal management system selectively operates in active cooling mode, passive cooling mode, air heat source heat pump heating mode or ultra-low temperature heating mode.

[0012] Optionally, when the integrated energy storage battery thermal management system operates in the active cooling mode, the control valve assembly controls the air heat exchange circuit to be connected to the heating heat exchanger, and controls the energy storage heat exchange circuit to be connected to the cooling heat exchanger, and the cooling heat exchanger is configured to provide a cold source to the energy storage battery in the energy storage heat exchange circuit.

[0013] Optionally, when the integrated energy storage battery thermal management system operates in the passive cooling mode, the control valve assembly controls the air heat exchange circuit to be connected to the energy storage heat exchange circuit, and the air heat exchanger in the air heat exchange circuit is configured to provide a cold source to the energy storage battery in the energy storage heat exchange circuit.

[0014] Optionally, when the integrated energy storage battery thermal management system operates in the air-heat source heat pump heating mode, the control valve assembly controls the air heat exchange circuit to be connected to the refrigeration heat exchanger, and controls the energy storage heat exchange circuit to be connected to the heating heat exchanger, and the heating heat exchanger is configured to provide a heat source to the energy storage battery in the energy storage heat exchange circuit.

[0015] Optionally, when the integrated energy storage battery thermal management system operates in the ultra-low temperature heating mode, the control valve assembly controls the energy storage heat exchange circuit to be connected to the heating heat exchanger, and controls the air heat exchange circuit and the heating heat exchanger, the air heat exchange circuit and the refrigeration heat exchanger, and the air heat exchange circuit and the energy storage heat exchange circuit to be disconnected, and the heating heat exchanger is configured to provide a heat source to the energy storage battery in the energy storage heat exchange circuit.

[0016] Optionally, the control valve assembly comprises a first four-way valve and a second four-way valve; wherein,

[0017] The first inlet of the first four-way valve is connected to the outlet of the air heat exchange circuit, the second inlet of the first four-way valve is connected to the outlet of the energy storage heat exchange circuit, the first outlet of the first four-way valve is connected to the inlet of the water channel of the heating heat exchanger, and the second outlet of the first four-way valve is selectively connected to the inlet of the water channel of the cooling heat exchanger;

[0018] The first inlet of the second four-way valve is connected to the outlet of the water channel of the heating heat exchanger, the second inlet of the second four-way valve is connected to the outlet of the water channel of the cooling heat exchanger, the first outlet of the second four-way valve is connected to the inlet of the air heat exchange circuit, and the second outlet of the second four-way valve is selectively connected to the inlet of the energy storage heat exchange circuit.

[0019] Optionally, the integrated energy storage battery thermal management system further includes a first three-way valve and a second three-way valve, wherein:

[0020] The first inlet of the first three-way valve is connected to the outlet of the energy storage heat exchange circuit, the second inlet of the first three-way valve is connected to the second outlet of the first four-way valve, and the outlet of the first three-way valve is connected to the water inlet of the refrigeration heat exchanger;

[0021] The first inlet of the second three-way valve is connected to the outlet of the water channel of the refrigeration heat exchanger, the second inlet of the second three-way valve is connected to the second outlet of the second four-way valve, and the outlet of the second three-way valve is connected to the inlet of the energy storage heat exchange circuit.

[0022] Optionally, the refrigerant circuit includes a compressor, the heating heat exchanger, the dry liquid storage tank, the expansion valve and the cooling heat exchanger connected end to end, and the refrigerant circulates through the compressor, the refrigerant channel of the heating heat exchanger, the dry liquid storage tank, the expansion valve and the refrigerant channel of the cooling heat exchanger.

[0023] Optionally, the refrigerant circuit further comprises two pressure sensors, which are respectively arranged at the inlet section of the heating heat exchanger and the outlet section of the cooling heat exchanger to detect the high pressure and low pressure of the refrigerant circuit; and / or,

[0024] The energy storage heat exchange circuit includes two temperature sensors, which are respectively arranged at the inlet section and the outlet section of the energy storage heat exchange circuit to detect the inlet temperature and the outlet temperature of the heat exchange fluid in the energy storage heat exchange circuit.

[0025] Beneficial effects of the present invention:

[0026] The present invention provides an integrated energy storage battery thermal management system. By dividing an integrated refrigerant module into at least two refrigerant circuits arranged in parallel, a large integrated refrigerant module is replaced by at least two small refrigerant modules, which not only ensures the output of cold and heat, but also reduces the volume occupancy rate of the entire integrated refrigerant module, thereby improving the integration of the integrated energy storage battery thermal management system; at the same time, the selective opening of the refrigerant circuit can regulate the output of cold and heat of the integrated refrigerant module, thereby avoiding waste of resources. In addition, the refrigerant circuit, the air heat exchange circuit, and the energy storage heat exchange circuit are each operated as an independent module, so that the integrated energy storage battery thermal management system is clearly modularized, thereby improving the adaptability of the integrated energy storage battery thermal management system, so that it can adapt to the use of energy storage devices with various thermal management requirements by directly replacing the number of refrigerant circuits, thereby improving its standardization and adaptation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a working principle diagram of an integrated energy storage battery thermal management system provided by a specific embodiment of the present invention;

[0028] Figure 2 It is a working principle diagram of an integrated energy storage battery thermal management system provided by a specific embodiment of the present invention working in an active cooling mode;

[0029] Figure 3 It is a working principle diagram of an integrated energy storage battery thermal management system provided by a specific embodiment of the present invention working in a passive cooling mode;

[0030] Figure 4 It is a working principle diagram of the integrated energy storage battery thermal management system provided by a specific embodiment of the present invention working in an empty heat source heat pump heating mode;

[0031] Figure 5 It is a working principle diagram of the integrated energy storage battery thermal management system provided by a specific embodiment of the present invention working in an ultra-low temperature heating mode.

[0032] In the figure:

[0033] 110, refrigerant circuit; 111, heating heat exchanger; 112, cooling heat exchanger; 113, compressor; 114, dry liquid storage tank; 115, expansion valve; 116, pressure sensor;

[0034] 200, air heat exchange circuit; 211, heat dissipation water tank; 212, cooling fan; 220, first water pump;

[0035] 300, energy storage heat exchange circuit; 310, energy storage battery; 320, second water pump; 330, temperature sensor;

[0036] 410, a first four-way valve; 420, a second four-way valve;

[0037] 510, first three-way valve; 520, second three-way valve. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] Refer to the following Figures 1 to 5 The integrated energy storage battery thermal management system provided in this embodiment is introduced.

[0043] Please refer to Figure 1Specifically, the integrated energy storage battery thermal management system includes an integrated refrigerant module, an air heat exchange loop 200 and an energy storage heat exchange loop 300. The integrated refrigerant module includes at least two refrigerant loops 110 arranged in parallel, the refrigerant loop 110 has a heating heat exchanger 111 and a cooling heat exchanger 112, and the integrated refrigerant module is configured to selectively open at least one refrigerant loop 110 so that the heating heat exchanger 111 provides heat to the outside and the cooling heat exchanger 112 provides cooling to the outside; the air heat exchange loop 200 can selectively heat exchange and connect to the heating heat exchanger 111 or the cooling heat exchanger 112 to heat the air heat exchanger in the air heat exchange loop 200; the energy storage heat exchange loop 300 can selectively heat exchange and connect to the heating heat exchanger 111, the cooling heat exchanger 112 or the air heat exchange loop 200 to heat the energy storage battery 310 in the energy storage heat exchange loop 300.

[0044] The integrated energy storage battery thermal management system in this embodiment, by dividing the integrated refrigerant module into at least two refrigerant circuits 110 arranged in parallel, replaces a large integrated refrigerant module with at least two small refrigerant modules, which not only ensures the output of cold and heat, but also reduces the volume occupancy rate of the entire integrated refrigerant module, and improves the integration of the integrated energy storage battery thermal management system; at the same time, the selective opening of the refrigerant circuit 110 can regulate the output of cold and heat of the integrated refrigerant module, avoiding waste of resources. In addition, the refrigerant circuit 110, the air heat exchange circuit 200 and the energy storage heat exchange circuit 300 are each operated as an independent module, so that the integrated energy storage battery thermal management system is clearly modularized, thereby improving the adaptability of the integrated energy storage battery thermal management system, so that it can adapt to the use of energy storage devices with various thermal management requirements by directly replacing the number of refrigerant circuits 110, and improve its standardization and adaptation rate.

[0045] Please refer to Figure 1In some embodiments, the refrigerant circuit 110 includes a compressor 113, a heating heat exchanger 111, a dry liquid reservoir 114, an expansion valve 115 and a cooling heat exchanger 112 which are connected end to end, and the refrigerant circulates through the compressor 113, the refrigerant channel of the heating heat exchanger 111, the dry liquid reservoir 114, the expansion valve 115 and the refrigerant channel of the cooling heat exchanger 112. The refrigerant is compressed by the compressor 113 to form a high-temperature and high-pressure gaseous refrigerant, which then releases heat to the outside at the heating heat exchanger 111, and absorbs cold energy to lower its own temperature to form a low-temperature and high-pressure liquid refrigerant. After being filtered and dried by the dry liquid storage tank 114, it is formed into a low-temperature and low-pressure liquid refrigerant through the pressure reducing effect of the expansion valve 115, and finally absorbs external heat at the refrigeration heat exchanger 112 to form a low-temperature and low-pressure gas, and finally enters the compressor 113 again to enter the next cycle, thereby realizing the refrigeration effect of the refrigeration heat exchanger 112 and the heating effect of the heating heat exchanger 111.

[0046] Specifically, both the cooling heat exchanger 112 and the heating heat exchanger 111 have a refrigerant channel and a water channel to achieve heat exchange between the media in the two channels, thereby achieving cooling and heating effects on other circuits.

[0047] In some embodiments, the refrigerant circuit 110 also includes two pressure sensors 116, which are respectively arranged at the inlet section of the heating heat exchanger 111 and the outlet section of the cooling heat exchanger 112 to detect the high pressure and low pressure of the refrigerant circuit 110; thereby, the pressure condition of the refrigerant circuit 110 can be better monitored.

[0048] In some embodiments, the air heat exchange loop 200 includes an air heat exchanger and a first water pump 220 connected end to end. The heat exchange fluid of the air heat exchange loop 200 circulates through the air heat exchanger and the first water pump 220. The air heat exchanger is used to exchange heat between the heat exchange fluid in the loop and the air temperature of the external environment to achieve heating or cooling of the heat exchange fluid in the air heat exchange loop 200. The first water pump 220 is used to drive the circulation of the heat exchange fluid in the air heat exchange loop 200.

[0049] Optionally, the air heat exchanger includes a heat dissipation water tank 211 and a plurality of cooling fans 212, the heat dissipation water tank 211 is used to exchange heat for the heat exchanger, and the cooling fans 212 are used to accelerate the heat exchange rate between the heat exchange liquid and the air.

[0050] In some embodiments, the energy storage heat exchange loop 300 includes an energy storage battery 310 and a second water pump 320 connected end to end. The heat exchange fluid of the energy storage heat exchange loop 300 circulates through the energy storage battery 310 and the second water pump 320. The energy storage battery 310 is used to exchange heat between the heat exchange fluid in the loop and the temperature of the energy storage battery 310 to achieve heating or cooling of the energy storage battery 310. The second water pump 320 is used to circulate and drive the heat exchange fluid in the energy storage heat exchange loop 300.

[0051] Optionally, the liquid cooling system in the energy storage battery 310 is connected to the energy storage heat exchange circuit 300 to achieve the circulation of the heat exchange liquid, and the energy storage battery 310 is in contact with the liquid cooling system to achieve heat exchange between the two.

[0052] In some embodiments, the energy storage heat exchange loop 300 includes two temperature sensors 330, which are respectively arranged at the inlet section and the outlet section of the energy storage heat exchange loop 300 to detect the inlet temperature and the outlet temperature of the heat exchange fluid in the energy storage heat exchange loop 300, so as to better monitor the temperature of the heat exchange fluid in the energy storage heat exchange loop 300, so as to detect the heat exchange effect of the energy storage battery 310 and whether the integrated energy storage battery thermal management system has any faults.

[0053] In some embodiments, the integrated energy storage battery thermal management system also includes a control valve assembly, which can control the on-off of the air heat exchange loop 200 with the heating heat exchanger 111 and the cooling heat exchanger 112, and control the on-off of the energy storage heat exchange loop 300 with the cooling heat exchanger 112, the heating heat exchanger 111 and the air heat exchange loop 200, respectively; so that the integrated energy storage battery thermal management system can selectively operate in active cooling mode, passive cooling mode, air heat source heat pump heating mode or ultra-low temperature heating mode, so that the integrated energy storage battery thermal management system can adapt to different cooling and heating requirements of the energy storage battery 310 during use, and avoid waste of resources.

[0054] Specifically, the control valve assembly includes a first four-way valve 410 and a second four-way valve 420; wherein, the first inlet of the first four-way valve 410 is connected to the outlet of the air heat exchange circuit 200, the second inlet of the first four-way valve 410 is connected to the outlet of the energy storage heat exchange circuit 300, the first outlet of the first four-way valve 410 is connected to the inlet of the water channel of the heating heat exchanger 111, and the second outlet of the first four-way valve 410 is selectively connected to the inlet of the water channel of the cooling heat exchanger 112; the first inlet of the second four-way valve 420 is connected to the outlet of the water channel of the heating heat exchanger 111, the second inlet of the second four-way valve 420 is connected to the outlet of the water channel of the cooling heat exchanger 112, the first outlet of the second four-way valve 420 is connected to the inlet of the air heat exchange circuit 200, and the second outlet of the second four-way valve 420 is selectively connected to the inlet of the energy storage heat exchange circuit 300. By controlling the first four-way valve 410 and the second four-way valve 420 , switching among the active cooling mode, the passive cooling mode, the air-heat source heat pump heating mode and the ultra-low temperature heating mode can be achieved.

[0055] More specifically, the integrated energy storage battery thermal management system further includes a first three-way valve 510 and a second three-way valve 520, wherein the first inlet of the first three-way valve 510 is connected to the outlet of the energy storage heat exchange loop 300, the second inlet of the first three-way valve 510 is connected to the second outlet of the first four-way valve 410, and the outlet of the first three-way valve 510 is connected to the water channel inlet of the refrigeration heat exchanger 112, so that the second outlet of the first four-way valve 410 is selectively connected to the inlet of the water channel of the refrigeration heat exchanger 112. The first inlet of the second three-way valve 520 is connected to the outlet of the water channel of the refrigeration heat exchanger 112, the second inlet of the second three-way valve 520 is connected to the second outlet of the second four-way valve 420, and the outlet of the second three-way valve 520 is connected to the inlet of the energy storage heat exchange loop 300, so that the second outlet of the second four-way valve 420 is selectively connected to the inlet of the energy storage heat exchange loop 300.

[0056] In some embodiments, the active cooling mode is applicable to when the energy storage battery 310 itself is relatively hot and needs to be cooled quickly, and the ambient temperature is not low; the passive cooling mode is applicable to when the energy storage battery 310 itself requires a small amount of cooling or the ambient temperature is low; the air-heat source heat pump heating mode is applicable to when the energy storage battery 310 itself needs to be heated quickly, and the ambient temperature is not high, that is, when the energy storage battery 310 is heated within the normal low temperature range; the ultra-low temperature heating mode is applicable to when the energy storage battery 310 itself is relatively cold and needs to be heated quickly, and the ambient temperature is low, that is, when the energy storage battery 310 reaches the ultra-low temperature range for heating.

[0057] It should be noted that the temperature range and critical point of each of the above modes are adaptively changed according to the requirements of different energy storage batteries 310 and are not specifically limited here.

[0058] Please refer to Figure 2 , the connecting line in the figure is in a dotted state, that is, a disconnected state. Specifically, when the integrated energy storage battery thermal management system works in the active cooling mode, the control valve assembly controls the air heat exchange loop 200 to be connected to the heating heat exchanger 111 for heat exchange, and controls the energy storage heat exchange loop 300 to be connected to the cooling heat exchanger 112 for heat exchange. The cooling heat exchanger 112 is configured to provide a cold source to the energy storage battery 310 in the energy storage heat exchange loop 300, so as to achieve cooling of the energy storage battery 310 through heat absorption of the cooling heat exchanger 112.

[0059] More specifically, when the integrated energy storage battery thermal management system operates in the active cooling mode, the first inlet of the first four-way valve 410 is connected to the first outlet, the first inlet of the second four-way valve 420 is connected to the first outlet, and the other inlets and outlets of the first four-way valve 410 and the other inlets and outlets of the second four-way valve 420 are disconnected; at the same time, the first inlet of the first three-way valve 510 is connected to the outlet, and the second inlet is disconnected, and the first inlet of the second three-way valve 520 is connected to the outlet, and the second inlet is disconnected.

[0060] Through the above arrangement, the heat exchange fluid of the air heat exchange loop 200 flows from the outlet of the air heat exchanger through the first four-way valve 410 to the inlet of the water channel of the heating heat exchanger 111, then flows out from the outlet of the water channel of the heating heat exchanger 111 and flows back to the inlet of the air heat exchanger through the second four-way valve 420, thereby realizing the heat exchange connection between the air heat exchange loop 200 and the heating heat exchanger 111. The heat exchange fluid in the energy storage heat exchange loop 300 flows from the outlet of the energy storage battery 310 through the first three-way valve 510 to the inlet of the water channel of the cooling heat exchanger 112, then flows out from the outlet of the water channel of the cooling heat exchanger 112 and flows back to the inlet of the energy storage battery 310 through the second three-way valve 520, thereby realizing the heat exchange connection between the energy storage heat exchange loop 300 and the cooling heat exchanger 112.

[0061] Please refer to Figure 3 , the connecting line in the figure is in a dotted state, that is, a disconnected state. Specifically, when the integrated energy storage battery thermal management system works in the passive cooling mode, the control valve assembly controls the air heat exchange loop 200 to be connected to the energy storage heat exchange loop 300 for heat exchange, and the air heat exchanger in the air heat exchange loop 200 is configured to provide a cold source to the energy storage battery 310 in the energy storage heat exchange loop 300, so as to realize cooling of the energy storage battery 310 through the coldness in the air.

[0062] More specifically, when the integrated energy storage battery thermal management system operates in the passive cooling mode, the refrigerant circulation loop does not work, the first inlet of the first four-way valve 410 is connected to the second outlet, the second inlet of the first four-way valve 410 is connected to the first outlet, the first inlet of the second four-way valve 420 is connected to the first outlet, and the other inlets and outlets of the second four-way valve 420 are disconnected; at the same time, the second inlet of the first three-way valve 510 is connected to the outlet, the first inlet is disconnected, the first inlet of the second three-way valve 520 is connected to the outlet, and the second inlet is disconnected.

[0063] Through the above arrangement, the heat exchange fluid of the air heat exchange circuit 200 flows from the outlet of the air heat exchanger through the first four-way valve 410 and the first three-way valve 510 to the inlet of the water channel of the refrigeration heat exchanger 112, then flows out from the outlet of the water channel of the refrigeration heat exchanger 112 and flows to the inlet of the energy storage battery 310 through the second three-way valve 520, then flows from the outlet of the energy storage battery 310 through the first four-way valve 410 to the inlet of the water channel of the heating heat exchanger 111, then flows out from the outlet of the water channel of the heating heat exchanger 111 and flows back to the inlet of the air heat exchanger through the second four-way valve 420, thereby realizing the heat exchange connection between the energy storage heat exchange circuit 300 and the air heat exchange circuit 200.

[0064] Please refer to Figure 4 , the connecting line in the figure is in a dotted state, that is, a disconnected state. Specifically, when the integrated energy storage battery thermal management system operates in the air heat source heat pump heating mode, the control valve assembly controls the air heat exchange loop 200 to be connected to the cooling heat exchanger 112 for heat exchange, and controls the energy storage heat exchange loop 300 to be connected to the heating heat exchanger 111 for heat exchange. The heating heat exchanger 111 is configured to provide a heat source to the energy storage battery 310 in the energy storage heat exchange loop 300, so as to achieve heating of the energy storage battery 310 through the heat output of the heating heat exchanger 111.

[0065] More specifically, when the integrated energy storage battery thermal management system operates in the air-heat source heat pump heating mode, the first inlet of the first four-way valve 410 is connected to the second outlet, the second inlet of the first four-way valve 410 is connected to the first outlet, the first inlet of the second four-way valve 420 is connected to the second outlet, and the second inlet of the second four-way valve 420 is connected to the first outlet. At the same time, the second inlet of the first three-way valve 510 is connected to the outlet, the first inlet is disconnected, the second inlet of the second three-way valve 520 is connected to the outlet, and the first inlet is disconnected.

[0066] Through the above arrangement, the heat exchange fluid of the air heat exchange loop 200 flows from the outlet of the air heat exchanger through the first four-way valve 410 and the first three-way valve 510 to the inlet of the water channel of the refrigeration heat exchanger 112, then flows out from the outlet of the water channel of the refrigeration heat exchanger 112 and flows back to the inlet of the air heat exchanger through the second four-way valve 420, thereby realizing the heat exchange connection between the air heat exchange loop 200 and the refrigeration heat exchanger 112. The heat exchange fluid in the energy storage heat exchange loop 300 flows from the outlet of the energy storage battery 310 through the first four-way valve 410 to the inlet of the water channel of the heating heat exchanger 111, then flows out from the outlet of the water channel of the heating heat exchanger 111 and flows back to the inlet of the energy storage battery 310 through the second four-way valve 420 and the second three-way valve 520, thereby realizing the heat exchange connection between the energy storage heat exchange loop 300 and the heating heat exchanger 111.

[0067] Please refer to Figure 5 , the connecting line in the figure is a dotted line state, that is, a disconnected state. Specifically, when the integrated energy storage battery thermal management system works in the ultra-low temperature heating mode, the control valve assembly controls the energy storage heat exchange circuit 300 to be connected to the heating heat exchanger 111 for heat exchange, and controls the air heat exchange circuit 200 and the heating heat exchanger 111, the air heat exchange circuit 200 and the cooling heat exchanger 112, and the air heat exchange circuit 200 and the energy storage heat exchange circuit 300 to be disconnected. The heating heat exchanger 111 is configured to provide a heat source to the energy storage battery 310 in the energy storage heat exchange circuit 300, so as to heat the energy storage battery 310 by refrigerant heating, and at the same time cancel the external heat absorption when the refrigerant reaches the cooling heat exchanger 112, so that the refrigerant circulation temperature is increased, thereby facilitating the rapid increase of the heating amount of the refrigerant entering the next cycle at the heating heat exchanger 111, thereby enabling the energy storage battery 310 to be rapidly heated in an ultra-low temperature state.

[0068] More specifically, when the integrated energy storage battery thermal management system operates in the ultra-low temperature heating mode, the second inlet of the first four-way valve 410 is connected to the first outlet, the first inlet of the second four-way valve 420 is connected to the second outlet, and the other inlets and outlets of the first four-way valve 410 and the other inlets and outlets of the second four-way valve 420 are disconnected. At the same time, the first three-way valve 510 is disconnected, the second inlet of the second three-way valve 520 is connected to the outlet, and the first inlet is disconnected.

[0069] Through the above arrangement, the heat exchange fluid in the energy storage heat exchange loop 300 flows from the outlet of the energy storage battery 310 to the inlet of the water channel of the heating heat exchanger 111 through the first four-way valve 410, and then flows out from the outlet of the water channel of the heating heat exchanger 111 and flows back to the inlet of the energy storage battery 310 through the second four-way valve 420 and the second three-way valve 520, thereby realizing the heat exchange connection between the energy storage heat exchange loop 300 and the heating heat exchanger 111. The air heat exchange loop 200 does not work and is not connected to any heat exchanger, so that the refrigerant in the refrigerant channel of the refrigeration heat exchanger 112 does not absorb the heat of the water channel, thereby increasing the temperature of the refrigerant circulating back to the compressor 113, so as to increase the overall temperature of the refrigerant in the next cycle, and realize the rapid heating of the energy storage battery 310 in an ultra-low temperature state.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An integrated energy storage battery thermal management system, characterized in that: include: An integrated refrigerant module, the integrated refrigerant module comprising at least two refrigerant circuits (110) arranged in parallel, the refrigerant circuit (110) having a heating heat exchanger (111) and a cooling heat exchanger (112), the integrated refrigerant module being configured to selectively open at least one of the refrigerant circuits (110) so that the heating heat exchanger (111) provides heat to the outside, and the cooling heat exchanger (112) provides cooling to the outside; An air heat exchange circuit (200), wherein the air heat exchange circuit (200) can be selectively connected to the heating heat exchanger (111) or the cooling heat exchanger (112) for heat exchange with the air heat exchanger in the air heat exchange circuit (200); An energy storage heat exchange circuit (300) can be selectively connected to the heating heat exchanger (111), the cooling heat exchanger (112) or the air heat exchange circuit (200) for heat exchange with an energy storage battery (310) in the energy storage heat exchange circuit (300).

2. The integrated energy storage battery thermal management system according to claim 1, characterized in that: The integrated energy storage battery thermal management system further comprises a control valve assembly, wherein the control valve assembly is capable of controlling the on / off connection between the air heat exchange circuit (200) and the heating heat exchanger (111) and the cooling heat exchanger (112), and controlling the on / off connection between the energy storage heat exchange circuit (300) and the cooling heat exchanger (112), the heating heat exchanger (111), and the air heat exchange circuit (200), respectively; so that the integrated energy storage battery thermal management system selectively operates in an active cooling mode, a passive cooling mode, an air heat source heat pump heating mode, or an ultra-low temperature heating mode.

3. The integrated energy storage battery thermal management system according to claim 2, characterized in that: When the integrated energy storage battery thermal management system operates in the active cooling mode, the control valve assembly controls the air heat exchange circuit (200) to be connected to the heating heat exchanger (111) for heat exchange, and controls the energy storage heat exchange circuit (300) to be connected to the cooling heat exchanger (112) for heat exchange, and the cooling heat exchanger (112) is configured to provide a cold source for the energy storage battery (310) in the energy storage heat exchange circuit (300).

4. The integrated energy storage battery thermal management system according to claim 2, characterized in that: When the integrated energy storage battery thermal management system operates in the passive cooling mode, the control valve assembly controls the air heat exchange circuit (200) to be connected to the energy storage heat exchange circuit (300) for heat exchange, and the air heat exchanger in the air heat exchange circuit (200) is configured to provide a cold source for the energy storage battery (310) in the energy storage heat exchange circuit (300).

5. The integrated energy storage battery thermal management system according to claim 2, characterized in that: When the integrated energy storage battery thermal management system operates in the air-heat source heat pump heating mode, the control valve assembly controls the air heat exchange circuit (200) to be heat-exchanged and connected to the refrigeration heat exchanger (112), and controls the energy storage heat exchange circuit (300) to be heat-exchanged and connected to the heating heat exchanger (111), and the heating heat exchanger (111) is configured to provide a heat source to the energy storage battery (310) in the energy storage heat exchange circuit (300).

6. The integrated energy storage battery thermal management system according to claim 2, characterized in that: When the integrated energy storage battery thermal management system operates in the ultra-low temperature heating mode, the control valve assembly controls the energy storage heat exchange circuit (300) to be connected to the heating heat exchanger (111) for heat exchange, and controls the air heat exchange circuit (200) and the heating heat exchanger (111), the air heat exchange circuit (200) and the cooling heat exchanger (112), and the air heat exchange circuit (200) and the energy storage heat exchange circuit (300) to be disconnected, and the heating heat exchanger (111) is configured to provide a heat source to the energy storage battery (310) in the energy storage heat exchange circuit (300).

7. The integrated energy storage battery thermal management system according to claim 2, characterized in that: The control valve assembly comprises a first four-way valve (410) and a second four-way valve (420); wherein, The first inlet of the first four-way valve (410) is connected to the outlet of the air heat exchange circuit (200), the second inlet of the first four-way valve (410) is connected to the outlet of the energy storage heat exchange circuit (300), the first outlet of the first four-way valve (410) is connected to the inlet of the water channel of the heating heat exchanger (111), and the second outlet of the first four-way valve (410) is selectively connected to the inlet of the water channel of the cooling heat exchanger (112); The first inlet of the second four-way valve (420) is connected to the outlet of the water channel of the heating heat exchanger (111), the second inlet of the second four-way valve (420) is connected to the outlet of the water channel of the cooling heat exchanger (112), the first outlet of the second four-way valve (420) is connected to the inlet of the air heat exchange circuit (200), and the second outlet of the second four-way valve (420) is selectively connected to the inlet of the energy storage heat exchange circuit (300).

8. The integrated energy storage battery thermal management system according to claim 7, characterized in that: The integrated energy storage battery thermal management system further comprises a first three-way valve (510) and a second three-way valve (520), wherein: The first inlet of the first three-way valve (510) is connected to the outlet of the energy storage heat exchange circuit (300), the second inlet of the first three-way valve (510) is connected to the second outlet of the first four-way valve (410), and the outlet of the first three-way valve (510) is connected to the water inlet of the refrigeration heat exchanger (112); The first inlet of the second three-way valve (520) is connected to the outlet of the water channel of the refrigeration heat exchanger (112), the second inlet of the second three-way valve (520) is connected to the second outlet of the second four-way valve (420), and the outlet of the second three-way valve (520) is connected to the inlet of the energy storage heat exchange circuit (300).

9. The integrated energy storage battery thermal management system according to claim 1, characterized in that: The refrigerant circuit (110) includes a compressor (113) connected end to end, the heating heat exchanger (111), a dry liquid reservoir (114), an expansion valve (115) and the cooling heat exchanger (112), and the refrigerant circulates through the compressor (113), the refrigerant channel of the heating heat exchanger (111), the dry liquid reservoir (114), the expansion valve (115) and the refrigerant channel of the cooling heat exchanger (112).

10. The integrated energy storage battery thermal management system according to claim 1, characterized in that: The refrigerant circuit (110) further comprises two pressure sensors (116), the two pressure sensors (116) being respectively arranged at the inlet section of the heating heat exchanger (111) and the outlet section of the cooling heat exchanger (112) to detect the high pressure and the low pressure of the refrigerant circuit (110); and / or, The energy storage heat exchange circuit (300) comprises two temperature sensors (330), which are respectively arranged at the inlet section and the outlet section of the energy storage heat exchange circuit (300) to detect the inlet temperature and the outlet temperature of the heat exchange fluid in the energy storage heat exchange circuit (300).

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