Integrated waterway board, thermal management system, energy storage system and photovoltaic energy storage system

Abstract

The utility model discloses an integrated waterway board, a thermal management system, an energy storage system and a photovoltaic energy storage system, and belongs to the technical field of energy storage thermal management. In the heat management integrated waterway board, a first substrate and a second substrate are connected to form a plurality of flow channels, the plurality of flow channels are used for being communicated with a liquid cooling assembly and a refrigeration assembly of the energy storage heat management system, the plurality of flow channels comprise a first flow channel and a second flow channel, and the first flow channel and the second flow channel are communicated with each other. One of the first flow channel and the second flow channel is connected with the first side of the energy storage heat management system, and the other one of the first flow channel and the second flow channel is connected with the second side of the energy storage heat management system; wherein the working temperature of the second side is higher than that of the first side, and the thermal management integrated waterway board is provided with a pressure equalizing runner connected between the first runner and the second runner. Through the arrangement of the pressure equalizing flow channel, the pressure balance of the cold and hot side flow channels is realized, the cooling and heating effects are optimized, the burden of a circulating water pump is reduced, and the operation cost is saved.

Description

Technical Field

[0001] The present application belongs to the field of energy storage thermal management technology, and in particular, relates to an integrated waterway plate, a thermal management system, an energy storage system, and a photovoltaic energy storage system. Background Art

[0002] In recent years, with the adjustment of domestic energy structure, the proportion of renewable energy use has gradually increased, such as photovoltaic, wind power, hydropower, etc. The above renewable energy is mainly supplied to the outside in the form of electricity, and is affected by the instability of the output of renewable energy such as solar, wind and hydropower. Therefore, the supporting energy storage system is used to stabilize the output of electricity, which plays an important supporting role in the utilization of renewable energy.

[0003] Electrochemical energy storage has the advantages of high efficiency, environmental protection, reliability, and applicability. It occupies a major component in existing energy storage forms. The thermal management system in electrochemical energy storage mainly provides a suitable operating temperature environment for the battery cells. Therefore, the system plays a vital role in the cycle performance, service life, and thermal runaway safety of the electrochemical energy storage system.

[0004] Energy storage liquid cooling and heating management systems usually use chillers and liquid cooling heat exchangers to cool and heat energy storage batteries. The liquid cooling heat exchangers mainly use refrigeration systems and radiators to exchange heat with chillers. However, in actual use, there will be too large a pressure difference between the hot-side pipe and the cold-side pipe, causing the coolant in the loop to encounter great resistance during the circulation of the coolant in the pipe, affecting the cooling and heating effects of the energy storage batteries, and increasing the burden on the circulating water pump, resulting in a significant increase in the power consumption of the circulating water pump. Utility Model Content

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an integrated waterway plate, a thermal management system, an energy storage system and a photovoltaic energy storage system, which achieves pressure balance between the first side flow channel and the second side flow channel, reduces the resistance of the coolant, optimizes the cooling and heating effects of the energy storage thermal management system, reduces the burden of the circulating water pump, and saves the operating cost of the energy storage thermal management system.

[0006] In a first aspect, the present application provides a thermal management integrated waterway plate, which is applied to an energy storage thermal management system, including:

[0007] a first substrate;

[0008] a second substrate, wherein the first substrate and the second substrate are connected to form a plurality of flow channels, and the plurality of flow channels are used to communicate with a liquid cooling component and a refrigeration component of the energy storage thermal management system, wherein the plurality of flow channels include a first flow channel and a second flow channel, one of the first flow channel and the second flow channel is connected to a first side of the energy storage thermal management system, and the other is connected to a second side of the energy storage thermal management system;

[0009] The operating temperature of the second side is higher than the operating temperature of the first side, and the thermal management integrated water channel plate is provided with a pressure equalizing channel connected between the first channel and the second channel.

[0010] According to the thermal management integrated water circuit plate of the present application, through the setting of the above-mentioned pressure equalizing channel, coordinated with the position design connected between the first channel and the second channel, pressure balance is achieved between the first side channel and the second side channel, effectively reducing the resistance encountered by the coolant during the circulation process, optimizing the cooling and heating effects of the energy storage thermal management system on the energy storage battery, and significantly reducing the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and then saving the operating cost of the entire energy storage thermal management system.

[0011] According to one embodiment of the present application, the pressure equalizing channel includes at least one curved segment.

[0012] According to one embodiment of the present application, there are multiple curved segments, and the bending directions of at least two of the multiple curved segments are opposite.

[0013] According to one embodiment of the present application, the pressure equalizing channel includes a first connecting segment, a first bending segment, a second connecting segment, a second bending segment and a third connecting segment connected in sequence, the first connecting segment is connected to the first channel, and the third connecting segment is connected to the second channel.

[0014] According to one embodiment of the present application, the multiple flow channels include first to eleventh flow channels, the first flow channel is used to connect with the valve group, water pump and water tank of the energy storage thermal management system; the second flow channel is used to connect with the valve group, first radiator and water pump of the energy storage thermal management system; the third flow channel is used to connect with the valve group and first heat exchanger of the energy storage thermal management system; the fourth flow channel is used to connect with the valve group and first radiator of the energy storage thermal management system; the fifth flow channel is used to connect with the valve group and second heat exchanger of the energy storage thermal management system; the sixth flow channel is used to connect with the water pump of the energy storage thermal management system and the liquid cooling channel of the energy storage battery; the seventh flow channel is used to connect with the valve group and liquid cooling channel of the energy storage thermal management system; the eighth flow channel is used to connect with the heater, valve group and second heat exchanger of the energy storage thermal management system; the ninth flow channel is used to connect with the valve group and first heat exchanger of the energy storage thermal management system; the tenth flow channel is used to connect with the heater and valve group of the energy storage thermal management system; the eleventh flow channel is used to connect with the water pump and valve group of the energy storage thermal management system.

[0015] According to an embodiment of the present application, the first substrate and the second substrate are connected by welding.

[0016] According to an embodiment of the present application, the multiple flow channels are arranged separately, and the multiple flow channels are located in the same plane.

[0017] According to one embodiment of the present application, the first substrate and the second substrate are stacked sequentially in a horizontal direction.

[0018] In a second aspect, the present application provides an energy storage thermal management system, the energy storage thermal management system comprising:

[0019] Any thermal management integrated waterway plate as described above;

[0020] A water tank, the water tank is mounted on the thermal management integrated water circuit board and is in communication with the flow channel of the thermal management integrated water circuit board;

[0021] A refrigeration assembly, the refrigeration assembly comprising a compressor, a first heat exchanger, an expansion valve and a second heat exchanger, the first heat exchanger and the second heat exchanger being installed in the thermal management integrated water circuit and communicating with a flow channel of the thermal management integrated water circuit plate;

[0022] A liquid cooling assembly, the liquid cooling assembly comprising a liquid cooling channel for an energy storage battery, a water pump, a heat dissipation channel for an electronic device, a first radiator and a valve group, the water pump and the valve group being installed on the thermal management integrated water circuit, the multiple valve ports of the valve group being connected to the first heat exchanger, the second heat exchanger, the liquid cooling channel for the energy storage battery, the water pump, the heat dissipation channel for an electronic device and the first radiator respectively through the flow channel of the thermal management integrated water circuit plate, and the multiple valve ports of the valve group being selectively opened and closed.

[0023] According to the energy storage thermal management system of the present application, through the provision of the above-mentioned thermal management integrated water channel plate, pressure balance is achieved between the first side flow channel and the second side flow channel, effectively reducing the resistance encountered by the coolant during the circulation process, optimizing the cooling and heating effects of the energy storage thermal management system on the energy storage battery, and significantly reducing the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and thus saving the operating cost of the entire energy storage thermal management system.

[0024] In a third aspect, the present application provides an energy storage system, the energy storage system comprising:

[0025] Energy storage batteries and electronic devices;

[0026] As in the above-mentioned energy storage thermal management system, the energy storage thermal management system is electrically connected to the energy storage battery and the electronic device.

[0027] According to the energy storage system of the present application, through the setting of the above-mentioned energy storage thermal management system, pressure balance is achieved between the first side flow channel and the second side flow channel, the resistance encountered by the coolant during the circulation process is effectively reduced, the cooling and heating effects of the energy storage thermal management system on the energy storage battery are optimized, and the burden of the circulating water pump in the loop is significantly reduced, thereby reducing the power consumption of the circulating water pump, and then saving the operating cost of the entire energy storage thermal management system.

[0028] In a fourth aspect, the present application provides a photovoltaic energy storage system, the photovoltaic energy storage system comprising:

[0029] Such as the energy storage system mentioned above;

[0030] A photovoltaic power generation system is used to supply power to the energy storage system.

[0031] According to the photovoltaic energy storage system of the present application, through the setting of the above-mentioned energy storage system, the pressure balance between the first side flow channel and the second side flow channel is achieved, the resistance encountered by the coolant during the circulation process is effectively reduced, the cooling and heating effects of the energy storage thermal management system on the energy storage battery are optimized, and the burden of the circulating water pump in the loop is significantly reduced, thereby reducing the power consumption of the circulating water pump, and then saving the operating cost of the entire energy storage thermal management system.

[0032] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 This is one of the structural schematic diagrams of the thermal management integrated waterway plate provided in the embodiment of the present application;

[0035] Figure 2 This is the second structural schematic diagram of the thermal management integrated waterway plate provided in the embodiment of the present application;

[0036] Figure 3 It is a structural exploded diagram of the energy storage thermal management system provided in an embodiment of the present application;

[0037] Figure 4 It is a schematic diagram of the structure of the energy storage system provided in the embodiment of the present application.

[0038] Reference numerals:

[0039] Energy storage thermal management system 10;

[0040] Thermal management integrated waterway plate 100, first substrate 110, second substrate 120;

[0041] a first port 131, a second port 132, a third port 133, a fourth port 134, a fifth port 135, a sixth port 136, a seventh port 137, an eighth port 138, a ninth port 139, a tenth port 141, an eleventh port 142, a twelfth port 143, a thirteenth port 144, a fourteenth port 145, a fifteenth port 146, a sixteenth port 147, a seventeenth port 148, an eighteenth port 149, a nineteenth port 151, a twentieth port 152, a twenty-first port 153, a twenty-second port 154, and a twenty-third port 155; a refrigeration assembly 200, a compressor 210, a first heat exchanger 220, an expansion valve 230, a second heat exchanger 240, a second radiator 250, and a liquid storage device 260;

[0042] Liquid cooling assembly 300, energy storage battery liquid cooling channel 310, electronic device heat dissipation channel 320, first water pump 330, second water pump 340, first radiator 350, first valve 360, second valve 370, heater 380;

[0043] Water tank 400;

[0044] Energy storage battery 20, electronic device 30. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0046] The present application discloses a thermal management integrated waterway plate 100 , which is applied to an energy storage thermal management system 10 .

[0047] Reference below Figure 1-Figure 4 A thermal management integrated waterway plate 100 according to an embodiment of the present application is described.

[0048] In some embodiments, Figure 1-Figure 2 As shown, the thermal management integrated waterway plate 100 includes: a first substrate 110 and a second substrate 120 .

[0049] The first substrate 110 and the second substrate 120 are connected to form a plurality of flow channels, and the plurality of flow channels are used to communicate with the liquid cooling component 300 and the refrigeration component 200 of the energy storage thermal management system 10, wherein the plurality of flow channels include a first flow channel and a second flow channel, one of the first flow channel and the second flow channel is connected to the first side of the energy storage thermal management system 10, and the other is connected to the second side of the energy storage thermal management system 10; wherein the operating temperature of the second side is higher than the operating temperature of the first side, and the thermal management integrated water circuit plate 100 is provided with a pressure equalizing flow channel connected between the first flow channel and the second flow channel.

[0050] For example, in some embodiments, the operating temperature of the second side minus the operating temperature of the first side ≥ 10°C.

[0051] Specifically, the difference between the operating temperature of the second side and the operating temperature of the first side may be 10°C, 18.75°C, 22.5°C, 35°C, 42.275°C, 55°C or other values ​​greater than 10°C, which is not limited here.

[0052] It can be understood that the first side of the energy storage thermal management system 10 can be a cold side, the second side of the energy storage thermal management system 10 can be a hot side, and the pressure equalizing channel can be used to equalize the pressure difference between the first side and the second side of the energy storage thermal management system 10.

[0053] The refrigeration assembly 200 includes a compressor 210, a first heat exchanger 220, an expansion valve 230 and a second heat exchanger 240, and the liquid cooling assembly 300 may include a storage battery liquid cooling channel 310, a water pump, an electronic device heat dissipation channel 320, a first radiator 350 and a valve group.

[0054] like Figure 3As shown, the refrigeration component 200 and the liquid cooling component 300 can be respectively located on both sides of the thermal management integrated water circuit plate 100. Specifically, the first heat exchanger 220 and the second heat exchanger 240 of the refrigeration component 200 can be installed on the side of the first substrate 110 away from the second substrate 120, the compressor 210, the first path of the first heat exchanger 220, the expansion valve 230 and the first path of the second heat exchanger 240 can form a refrigeration cycle, the second path of the first heat exchanger 220 and the second path of the second heat exchanger 240 can be connected to the flow channel, the water pump and the valve group of the liquid cooling component 300 can be installed on the side of the second substrate 120 away from the first substrate 110, and the liquid cooling component 300 can be connected to the flow channel.

[0055] Among them, the connection method between the liquid cooling component 300 and the second substrate 120 may include but is not limited to bolt connection, riveting or snap connection, etc., which is not limited here; the connection method between the refrigeration component 200 and the first substrate 110 may include but is not limited to bolt connection, riveting or snap connection, etc., which is not limited here.

[0056] In this embodiment, if Figure 1-Figure 2 As shown, the pressure equalizing channel may be defined by the first substrate 110 and the second substrate 120 . Specifically, the pressure equalizing channel may include a first pressure equalizing channel portion 130A located on the first substrate 110 and a second pressure equalizing channel portion 130B located on the second substrate 120 .

[0057] In other embodiments, the pressure equalizing channel may be defined only by the first substrate 110 .

[0058] In some other embodiments, the pressure equalizing channel may be defined only by the second substrate 120 .

[0059] In actual implementation, Figure 1-Figure 2 As shown, the energy storage thermal management system 10 has multiple working modes. In some working modes, multiple flow channels can be divided into a first side flow channel and a second side flow channel, that is, cold water flows in the first side flow channel, and hot water flows in the second side flow channel. However, no matter which working mode is switched, the hot and cold types of the first flow channel and the second flow channel are different from each other. In other words, in any working mode, when the first flow channel is the first side flow channel, the second flow channel must be the second side flow channel, and when the first flow channel is the second side flow channel, the second flow channel must be the first side flow channel. Based on the principle of thermal expansion and contraction, the gas in the second side flow channel expands, resulting in a higher pressure in the second side flow channel, and the gas in the first side flow channel contracts, resulting in a lower pressure in the first side flow channel. When an equalizing pressure flow channel is provided between the first flow channel and the second flow channel, the equalizing pressure flow channel can connect the gas paths of the second side flow channel and the first side flow channel, so that the pressure of the second side flow channel and the pressure of the first side flow channel are gradually and slowly adjusted to be consistent.

[0060] It should be noted that in actual design, the diameter of the pressure equalizing channel may be much smaller than the diameters of the first channel and the second channel, so as to increase the difficulty for the coolant to enter the pressure equalizing channel.

[0061] The thermal management integrated water circuit plate 100 provided in the embodiment of the present application realizes pressure balance between the first side flow channel and the second side flow channel through the setting of the above-mentioned pressure equalizing flow channel and the position design connected between the first flow channel and the second flow channel, effectively reduces the resistance encountered by the coolant during the circulation process, optimizes the cooling and heating effects of the energy storage thermal management system 10 on the energy storage battery 20, and significantly reduces the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and further saving the operating cost of the entire energy storage thermal management system 10.

[0062] In some embodiments, the pressure equalizing channel may include at least one curved segment.

[0063] In this embodiment, the pressure equalizing channel may include two curved sections.

[0064] In other embodiments, the pressure equalizing channel may include a curved section.

[0065] In some further embodiments, the pressure equalizing channel may include three curved sections.

[0066] The bending radius of the bending section may be 90°, 120°, 180° or 240°, etc., which is not limited here.

[0067] For example, in some embodiments, the bending arc of the curved segment is 180°.

[0068] The thermal management integrated water circuit plate 100 provided in the embodiment of the present application, through the setting of the above-mentioned curved section, effectively increases the flow resistance of the pressure equalizing channel compared to the straight-line structural design, and combines the small-diameter design of the pressure equalizing channel to minimize the temperature exchange between the first side channel and the second side channel, thereby reducing the probability of heat transfer to the cold second side.

[0069] In some embodiments, there may be multiple curved segments, and the bending directions of at least two of the multiple curved segments may be opposite.

[0070] Here, a plurality of means two or more than two, for example, in some embodiments, Figure 1 and Figure 4 As shown, there may be two curved segments, and the bending directions of the two curved segments may be opposite.

[0071] In this embodiment, there may be two curved sections, one of which may be curved upward, and the other may be curved downward.

[0072] In other embodiments, there may be two curved sections, one of which may be curved toward the left, and the other may be curved toward the right.

[0073] In some other embodiments, there may be three curved segments, the first curved segment may be curved upward, the second curved segment may be curved downward, and the third curved segment may be curved upward.

[0074] The thermal management integrated water circuit plate 100 provided in the embodiment of the present application, through the arrangement of the above-mentioned multiple bending sections, cooperates with the structural design of at least two bending sections with different bending directions, thereby increasing the tortuosity of the direction of the entire pressure equalizing flow channel, further increasing the flow resistance of the pressure equalizing flow channel, thereby reducing the probability of cold water in the first side flow channel and hot water in the second side flow channel entering the pressure equalizing flow channel.

[0075] In some embodiments, the pressure equalizing channel may include a first connecting segment, a first bending segment, a second connecting segment, a second bending segment and a third connecting segment connected in sequence, the first connecting segment may be connected to the first channel, and the third connecting segment may be connected to the second channel.

[0076] In this embodiment, the pressure equalizing channel can be defined by the first substrate 110 and the second substrate 120, the bending radius of the first bending section and the second bending section can be 180°, the first connecting section, the second connecting section and the third connecting section can be arranged in parallel, the first bending section can be bent toward the direction close to the connection between the first connecting section and the first channel, that is, bend upward, the second bending section can be bent toward the direction close to the connection between the third connecting section and the second channel, that is, bend downward, and the entire pressure equalizing channel can be in a horizontal "S" shape.

[0077] The thermal management integrated water circuit plate 100 provided in the embodiment of the present application effectively increases the flow resistance of the pressure equalizing channel through the arrangement of the above-mentioned first connecting section, first bending section, second connecting section, second bending section and third connecting section, so that the cold water in the first side channel and the hot water in the second side channel are difficult to flow smoothly through the pressure equalizing channel, further reducing the probability of heat cross-talk between the cold and second sides.

[0078] In some embodiments, the plurality of flow channels may include first to eleventh flow channels, the first flow channel may be used to connect to the valve group, the water pump and the water tank 400 of the energy storage thermal management system 10; the second flow channel may be used to connect to the valve group, the first radiator 350 and the water pump of the energy storage thermal management system 10; the third flow channel may be used to connect to the valve group and the first heat exchanger 220 of the energy storage thermal management system 10; the fourth flow channel may be used to connect to the valve group and the first radiator 350 of the energy storage thermal management system 10; the fifth flow channel may be used to connect to the valve group and the second heat exchanger 240 of the energy storage thermal management system 10; the sixth flow channel may be used to connect to the valve group and the second heat exchanger 240 of the energy storage thermal management system 10; the sixth flow channel may be used to connect to the valve group and the first heat exchanger 220 of the energy storage thermal management system 10; the fourth flow channel may be used to connect to the valve group and the first radiator 350 of the energy storage thermal management system 10; the fifth flow channel may be used to connect to the valve group and the second heat exchanger 240 of the energy storage thermal management system 10; the sixth flow channel may be used to connect to the valve group and the first heat exchanger 220 of the energy storage thermal management system 10; the sixth flow channel may be used to connect to the valve group and the first ... Used to connect with the water pump of the energy storage thermal management system 10 and the liquid cooling channel 310 of the energy storage battery; the seventh flow channel can be used to connect with the valve group of the energy storage thermal management system 10 and the liquid cooling channel 310 of the energy storage battery; the eighth flow channel can be used to connect with the heater 380, the valve group and the second heat exchanger 240 of the energy storage thermal management system 10; the ninth flow channel can be used to connect with the valve group and the first heat exchanger 220 of the energy storage thermal management system 10; the tenth flow channel can be used to connect with the heater 380 and the valve group of the energy storage thermal management system 10; the eleventh flow channel can be used to connect with the water pump and the valve group of the energy storage thermal management system 10.

[0079] like Figure 1-Figure 2 As shown, the flow channel can be formed by covering the first substrate 110 and the second substrate 120, and the entire thermal management integrated waterway plate 100 can have 23 water inlets and outlets. Specifically, the second substrate 120 can have the first to the eighteenth ports, and the first substrate 110 can have the nineteenth to the twenty-third ports, wherein the first flow channel can be connected between the fourth port 134, the sixth port 136 and the twenty-third port 155, the second flow channel can be connected between the second port 132, the eighth port 138 and the sixteenth port 147, the third flow channel can be connected between the third port 133 and the twentieth port 152, and the fourth flow channel can be connected between the first port 1 The fifth flow channel can be connected between the fifth port 135 and the twenty-second port 154, the sixth flow channel can be connected between the sixth port 136 and the seventh port 137, the seventh flow channel can be connected between the thirteenth port 144 and the eighteenth port 149, the eighth flow channel can be connected between the ninth port 139, the eleventh port 142 and the twenty-first port 153, the ninth flow channel can be connected between the fourteenth port 145 and the nineteenth port 151, the tenth flow channel can be connected between the tenth port 141 and the twelfth port 143, and the eleventh flow channel can be connected between the fifteenth port 146 and the sixteenth port 147.

[0080] In this embodiment, if Figure 3-Figure 4As shown, the first flow channel can be connected to the third valve port D3 of the second valve 370, the inlet of the first water pump 330 and the water tank 400; the second flow channel can be connected to the fifth valve port D5 of the second valve 370, the outlet of the first radiator 350 and the inlet of the second water pump 340; the third flow channel can be connected to the fourth valve port D4 of the second valve 370 and the outlet of the first heat exchanger 240; the fourth flow channel can be connected to the first valve port D1 of the second valve 370 and the inlet of the first radiator 350; the fifth flow channel can be connected to the second valve port D2 of the second valve 370 and the outlet of the second heat exchanger 240; the sixth flow channel can be connected to the second water pump 340 The outlet of the energy storage battery and the inlet of the liquid cooling channel 310 are connected; the seventh flow channel can be connected to the fourth valve port C4 of the first valve 360 ​​and the outlet of the liquid cooling channel 310 of the energy storage battery; the eighth flow channel can be connected to the outlet of the heater 380, the first valve port C1 of the first valve 360 ​​and the inlet of the second heat exchanger 240; the ninth flow channel can be connected to the third valve port C3 of the first valve 360 ​​and the inlet of the first heat exchanger 220; the tenth flow channel can be connected to the inlet of the heater 380 and the fifth valve port C5 of the first valve 360; the eleventh flow channel can be connected to the outlet of the second water pump 340 and the second valve port C2 of the first valve 360.

[0081] The pressure equalizing channel is connected between the first channel and the second channel. Preferably, the pressure equalizing channel can be connected in the middle of the first channel and the second channel.

[0082] The thermal management integrated water channel plate 100 provided in the embodiment of the present application realizes the connection between each flow channel and the liquid cooling component 300 and the refrigeration component 200 through the arrangement of the above-mentioned first to eleventh flow channels. When the energy storage thermal management system 10 switches to different working modes, the connection relationship between the first to eleventh flow channels and the cold side and the hot side also changes. According to the rule that the first flow channel and the second flow channel are respectively connected to the cold side and the hot side in all modes requiring pressure equalization, the pressure equalizing flow channel is arranged between the first flow channel and the second flow channel, which can be applicable to all working modes requiring pressure equalization, thereby increasing the practicality of the pressure equalizing flow channel. At the same time, the specific position of the pressure equalizing flow channel can be adjusted according to actual needs, which increases the structural flexibility and diversity of the pressure equalizing flow channel.

[0083] In some embodiments, the first substrate 110 and the second substrate 120 may be connected by welding.

[0084] The connection method between the first substrate 110 and the second substrate 120 may include, but is not limited to, hot plate welding, hot air welding, ultrasonic welding, friction welding, vibration welding, induction welding, high frequency welding or laser welding, etc., which is not limited here.

[0085] For example, in some embodiments, the first substrate 110 and the second substrate 120 are connected by hot plate welding. Specifically, a heated hot plate can be used to place the first substrate 110 and the second substrate 120 on the hot plate so that the first substrate 110 and the second substrate 120 are fused under pressure.

[0086] Among them, the first substrate 110 and the second substrate 120 can be made of plastic material. Specifically, the material of the first substrate 110 can include but is not limited to PP (Polypropylene), PC (Polycarbonate), GF (Glass Fiber), PBT (polybutylene terephthalate) or a combination of the above, and the material of the second substrate 120 can include but is not limited to PP (Polypropylene), PC (Polycarbonate), GF (Glass Fiber), PBT (polybutyleneterephthalate) or a combination of the above, and there is no limitation here.

[0087] For example, in some embodiments, the material of the first substrate 110 and the second substrate 120 are both PP GF20, ie, a composite material of polypropylene and 20% glass fiber.

[0088] The thermal management integrated water circuit plate 100 provided in the embodiment of the present application is designed to connect the first substrate 110 and the second substrate 120 by hot plate welding. The first substrate 110 and the second substrate 120 are made of the same material, so that the melting temperature is easier to control, and the manufacturing difficulty of the hot plate is simplified, thereby reducing the welding difficulty between the first substrate 110 and the second substrate 120. At the same time, it effectively prevents leakage of the flow channel after the first substrate 110 and the second substrate 120 are combined. In addition, the welding equipment is simple and easy to operate, which is conducive to promotion and mass production.

[0089] In some embodiments, the plurality of flow channels may be disposed separately, and the plurality of flow channels may be located in the same plane.

[0090] In actual implementation, the multiple flow channels do not share the same flow channel surface, and a gap of at least 2 mm can be maintained between the multiple flow channels. The flow channels may include first to eleventh flow channels, and the first to eleventh flow channels can be formed by combining parts of the first substrate 110 and parts of the second substrate 120. The docking surface of the first substrate 110 and the docking surface of the second substrate 120 can be positioned and docked, and the first substrate 110 and the second substrate 120 can be covered together at one time by hot plate welding to form multiple flow channels.

[0091] It should be noted that the flow channel can be designed to be curved, straight or serpentine, etc., and there is no limitation here. Preferably, multiple flow channels are designed to be straight to the maximum extent to reduce flow resistance.

[0092] The thermal management integrated water channel plate 100 provided in the embodiment of the present application has a structural design in which the above-mentioned multiple second flow channels are located on the same layer. During the assembly process of the second substrate 120 and the base, it is only necessary to use a hot plate to perform a single-layer welding operation on the second substrate 120 and the base to complete the processing of the second flow channel group. The process is simple and convenient for production. At the same time, different flow channels are separated and do not share the flow channel surface, which prevents heat from being transmitted to each other among the multiple flow channels when the energy storage thermal management system 10 is working, thereby improving the cooling effect and heating effect of the loop.

[0093] In some embodiments, Figure 1-Figure 3 As shown, the first substrate 110 and the second substrate 120 may be sequentially stacked in a horizontal direction.

[0094] In this embodiment, if Figure 1-Figure 3 As shown, the first substrate 110 and the second substrate 120 can be placed vertically, that is, the large surfaces of the first substrate 110 and the second substrate 120 can be arranged vertically, the second substrate 120 can be connected to one side of the first substrate 110 in the horizontal direction, and the liquid cooling component 300 and the refrigeration component 200 can be respectively located on both sides of the entire thermal management integrated water circuit plate 100 in the horizontal direction.

[0095] The thermal management integrated waterway plate 100 provided in the embodiment of the present application improves the integration of the overall structure through the structural design of the first substrate 110 and the second substrate 120 stacked in sequence in the horizontal direction, significantly reduces the installation width required for the entire energy storage thermal management system 10, meets the diversity of energy storage space requirements, and is suitable for installation scenarios with insufficient depth space, thereby increasing the use width of the entire energy storage thermal management system 10.

[0096] The present application also discloses an energy storage thermal management system 10 .

[0097] In some embodiments, Figure 3-Figure 4As shown, the energy storage thermal management system 10 includes: a water tank 400, a refrigeration component 200, a liquid cooling component 300 and any one of the thermal management integrated water circuit boards 100 described above.

[0098] The water tank 400 is installed on the thermal management integrated water circuit board 100, and the water tank 400 is connected to the flow channel of the thermal management integrated water circuit board 100. The refrigeration component 200 includes a compressor 210, a first heat exchanger 220, an expansion valve 230 and a second heat exchanger 240. The first heat exchanger 220 and the second heat exchanger 240 are installed on the thermal management integrated water circuit 100, and the first heat exchanger 220 and the second heat exchanger 240 are connected to the flow channel of the thermal management integrated water circuit board 100; the liquid cooling component 30 0 includes a battery liquid cooling channel 310, a water pump, an electronic device heat dissipation channel 320, a first radiator 350 and a valve group. The water pump and the valve group are installed on the thermal management integrated water circuit 100. The multiple valve ports of the valve group are respectively connected to the first heat exchanger 220, the second heat exchanger 240, the battery liquid cooling channel 310, the water pump, the electronic device heat dissipation channel 320 and the first radiator 350 through the flow channel of the thermal management integrated water circuit plate 100, and the multiple valve ports of the valve group can be selectively opened and closed.

[0099] like Figure 3-Figure 4 As shown, the water tank 400 can be installed above the thermal management integrated water circuit 100, the liquid cooling component 300 can also include a heater 380, the refrigeration component 200 can also include a liquid reservoir 260 and a second radiator 250, the water pump can include a first water pump 330 and a second water pump 340, the valve group can include a first valve 360 ​​and a second valve 370, and the multiple valve ports of the first valve 360 ​​can be respectively connected to the outlet of the energy storage battery liquid cooling channel 310, the inlet of the second path of the second heat exchanger 240, the outlet of the second water pump 340, the inlet of the second path of the first heat exchanger 220, and the inlet of the heater 380; the multiple valve ports of the second valve 370 can be respectively connected to the second path of the second heat exchanger 240, the inlet of the energy storage battery liquid cooling channel 310, the outlet of the second path of the first heat exchanger 220, the outlet of the first radiator 350, and the inlet of the first radiator 350.

[0100] Among them, the first water pump 330, the second water pump 340, the first valve 360, the second valve 370 and the heater 380 can be installed on the side of the second substrate 120 away from the first substrate 110, the compressor 210, the first path of the first heat exchanger 220, the liquid reservoir 260, the second radiator 250 and the first path of the second heat exchanger 240 can be connected end to end to form a refrigeration cycle, the first heat exchanger 220 and the second heat exchanger 240 can be installed on the side of the first substrate 110 away from the second substrate 120, the setting of the liquid reservoir 260 and the second radiator 250 can supercool the saturated refrigerant, thereby increasing the supercooling degree of the refrigerant in the refrigeration cycle and further increasing the cooling capacity.

[0101] In actual implementation, Figure 4 As shown, the energy storage thermal management system 10 may include multiple working modes, and the temperature control method for the energy storage battery 20 in each working mode is different. Specifically, when the energy storage battery 20 needs to dissipate heat, the energy storage battery 20 can use the first radiator 350 for air cooling. If the cooling capacity provided by the first radiator 350 is insufficient to meet the demand, the energy storage battery 20 can use the second heat exchanger 240 of the refrigeration component 200 to exchange heat with the coolant to achieve cooling; or, when the energy storage battery 20 needs to be heated, the energy storage battery 20 can use the electronic device 30 to heat the energy storage battery 20. The waste heat is exchanged through the electronic device heat dissipation channel 320 to achieve heating. If the heat provided by the electronic device 30 is insufficient to meet the demand, the energy storage battery 20 can also use the first heat exchanger 220 of the refrigeration component 200 to exchange heat with the coolant to achieve heating. If the heat provided by the refrigeration component 200 is still insufficient to meet the demand, the refrigeration component 200 and the electronic device 30 can jointly provide heat for the energy storage battery 20; or, when the temperature of the system working environment is moderate, the energy storage battery 20 only needs to use the coolant circulation of the liquid cooling component 300 to achieve internal temperature uniformity.

[0102] The energy storage thermal management system 10 provided in the embodiment of the present application realizes pressure balance between the first side flow channel and the second side flow channel through the arrangement of the above-mentioned thermal management integrated water channel plate 100, effectively reduces the resistance encountered by the coolant during the circulation process, optimizes the cooling and heating effects of the energy storage thermal management system 10 on the energy storage battery 20, and significantly reduces the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and further saving the operating cost of the entire energy storage thermal management system 10.

[0103] The application also discloses an energy storage system.

[0104] In some embodiments, Figure 4 As shown, the energy storage system includes: an energy storage battery 20, an electronic device 30 and the energy storage thermal management system 10 as described above.

[0105] The energy storage thermal management system 10 is electrically connected to the energy storage battery 20 and the electronic device 30 .

[0106] The electronic device heat dissipation channel 320 can be installed in the electronic device 30 of the energy storage system to achieve heat dissipation for the electronic device 30 , and the energy storage battery liquid cooling channel 310 can be installed in the energy storage battery 20 of the energy storage system to achieve heat dissipation for the energy storage battery 20 .

[0107] The electronic device 30 may be a high-heat generating device in the energy storage system. Specifically, the electronic device 30 may include but is not limited to a power conversion component, a communication module, a detection module or an interactive module, etc. For example, in some embodiments, the electronic device 30 is a power conversion component.

[0108] The energy storage system provided in the embodiment of the present application achieves pressure balance between the first side flow channel and the second side flow channel through the configuration of the above-mentioned energy storage thermal management system 10, effectively reduces the resistance encountered by the coolant during the circulation process, optimizes the cooling and heating effects of the energy storage thermal management system 10 on the energy storage battery 20, and significantly reduces the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and further saving the operating cost of the entire energy storage thermal management system 10.

[0109] The application also discloses a photovoltaic energy storage system.

[0110] In some embodiments, the photovoltaic energy storage system includes: a photovoltaic power generation system and an energy storage system as described above.

[0111] The photovoltaic power generation system is used to power the energy storage system.

[0112] The photovoltaic power generation system may include photovoltaic modules and inverter units. The energy storage battery 20 in the energy storage system may be connected to the direct current output by the photovoltaic modules, and other power modules in the energy storage system may be connected to the alternating current output by the inverter unit.

[0113] The photovoltaic energy storage system provided in the embodiment of the present application realizes pressure balance between the first side flow channel and the second side flow channel through the setting of the above-mentioned energy storage system, effectively reduces the resistance encountered by the coolant during the circulation process, optimizes the cooling and heating effects of the energy storage thermal management system 10 on the energy storage battery 20, and significantly reduces the burden of the circulating water pump in the loop, thereby reducing the power consumption of the circulating water pump, and thus saving the operating cost of the entire energy storage thermal management system 10.

[0114] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0115] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0116] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0117] In the description of the present application, “plurality” means two or more.

[0118] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0119] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0120] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0121] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An integrated waterway board, applied to a thermal management system, characterized in that: include: a first substrate; a second substrate, wherein the first substrate and the second substrate are connected to form a plurality of flow channels, wherein the plurality of flow channels are used to communicate with a liquid cooling component and a refrigeration component of the thermal management system, wherein the plurality of flow channels include a first flow channel and a second flow channel, wherein one of the first flow channel and the second flow channel is connected to a first side of the thermal management system, and the other is connected to a second side of the thermal management system; The operating temperature of the second side is higher than the operating temperature of the first side, and the integrated waterway plate is provided with a pressure equalizing channel connected between the first channel and the second channel.

2. The integrated waterway plate according to claim 1, characterized in that: The pressure equalizing channel includes at least one curved section.

3. The integrated waterway plate according to claim 2, characterized in that: There are multiple curved segments, and at least two of the multiple curved segments have opposite bending directions.

4. The integrated waterway plate according to claim 3, characterized in that: The pressure equalizing channel includes a first connecting section, a first bending section, a second connecting section, a second bending section and a third connecting section which are connected in sequence. The first connecting section is connected to the first channel, and the third connecting section is connected to the second channel.

5. The integrated waterway plate according to any one of claims 1 to 4, characterized in that: The multiple flow channels include first to eleventh flow channels, the first flow channel is used to connect with the valve group, water pump and water tank of the thermal management system; the second flow channel is used to connect with the valve group, first radiator and water pump of the thermal management system; the third flow channel is used to connect with the valve group and first heat exchanger of the thermal management system; the fourth flow channel is used to connect with the valve group and first radiator of the thermal management system; the fifth flow channel is used to connect with the valve group and second heat exchanger of the thermal management system; the sixth flow channel is used to connect with the water pump of the thermal management system and the liquid cooling channel of the energy storage battery; the seventh flow channel is used to connect with the valve group and the liquid cooling channel of the energy storage battery of the thermal management system; the eighth flow channel is used to connect with the heater, valve group and second heat exchanger of the thermal management system; the ninth flow channel is used to connect with the valve group and first heat exchanger of the thermal management system; the tenth flow channel is used to connect with the heater and valve group of the thermal management system; the eleventh flow channel is used to connect with the water pump and valve group of the thermal management system.

6. The integrated waterway plate according to any one of claims 1 to 4, characterized in that: The multiple flow channels are separately arranged, and the multiple flow channels are located in the same plane.

7. The integrated waterway plate according to any one of claims 1 to 4, characterized in that: The first substrate and the second substrate are sequentially stacked in a horizontal direction.

8. A thermal management system, characterized in that: include: The integrated waterway plate according to any one of claims 1 to 7; A water tank, the water tank is mounted on the integrated waterway plate and communicated with the flow channel of the integrated waterway plate; A refrigeration assembly, the refrigeration assembly comprising a compressor, a first heat exchanger, an expansion valve and a second heat exchanger, the first heat exchanger and the second heat exchanger being installed in the thermal management integrated water circuit and communicating with a flow channel of the integrated water circuit plate; A liquid cooling assembly, the liquid cooling assembly comprising a liquid cooling channel for an energy storage battery, a water pump, a heat dissipation channel for an electronic device, a first radiator and a valve group, the water pump and the valve group being installed on the thermal management integrated water circuit, the multiple valve ports of the valve group being connected to the first heat exchanger, the second heat exchanger, the liquid cooling channel for the energy storage battery, the water pump, the heat dissipation channel for an electronic device and the first radiator respectively through the flow channel of the integrated water circuit plate, and the multiple valve ports of the valve group being selectively opened and closed.

9. An energy storage system, characterized in that: include: Energy storage batteries and electronic devices; The thermal management system as claimed in claim 8, wherein the thermal management system is electrically connected to the energy storage battery and the electronic device.

10. A photovoltaic energy storage system, characterized in that: include: The energy storage system according to claim 9; A photovoltaic power generation system is used to supply power to the energy storage system.

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