CN222927601U

CN222927601U - Energy storage device, energy storage system and charging network

Info

Publication number: CN222927601U
Application number: CN202520026174.9U
Authority: CN
Inventors: 曾翰轩; 官巧梅; 成勇; 汪鹏敏; 陈琢; 吴凯
Original assignee: Shenzhen Times Future Energy Technology Co ltd; Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-11-25
Filing date: 2025-01-07
Publication date: 2025-05-30
Anticipated expiration: 2035-01-07
Also published as: CN119447616B; CN119419411B; CN119447616A; CN119419411A; CN222645830U

Abstract

The present application relates to the field of energy storage technology, and provides an energy storage device, an energy storage system and a charging network. The energy storage device includes a battery device, a thermal management module, a cold storage structure, a first multi-way valve and a second multi-way valve. The thermal management module includes a refrigeration component and a heat exchanger. The heat exchanger includes a first heat exchange part and a second heat exchange part. The refrigeration component is arranged in series between a first input end and a first output end of the first heat exchange part; the first valve port of the first multi-way valve is connected to the second output end, the second valve port is connected to the heat exchange inlet, the third valve port is connected to the cold storage inlet, the fourth valve port of the second multi-way valve is connected to the heat exchange outlet, the fifth valve port is connected to the second input end, and the sixth valve port is connected to the cold storage outlet; in the energy storage device provided in the embodiment of the present application, the first multi-way valve and the second multi-way valve can distribute the cooling medium, so that the battery device can achieve a better heat dissipation effect under different working conditions, thereby effectively improving the heat dissipation efficiency of the battery device.

Description

Energy storage device, energy storage system and charging network

Technical Field

The application relates to the technical field of energy storage, and particularly provides an energy storage device, an energy storage system and a charging network.

Background

New energy batteries are increasingly used in life and industry, for example, new energy automobiles having a battery mounted therein have been widely used, and in addition, batteries are increasingly used in the field of energy storage and the like.

The energy storage system is used as a supplement and standby system of the power grid, and can operate with high power to balance the load of the power grid under the conditions of fluctuation or electric energy shortage of the power grid. While energy storage systems generate a significant amount of heat under high power operation, a degree of cooling is required.

The energy storage system mainly uses a heat management module to compress and refrigerate a cooling medium and provide the cooling medium to the battery device for heat exchange and cooling, however, under different working states of the battery device, the heat productivity of the battery device is different, and the adaptability of the heat management module is poor, so that the heat dissipation efficiency of the battery device is low.

Disclosure of utility model

The embodiment of the application aims to provide an energy storage device, an energy storage system and a charging network, and aims to solve the problem that the heat dissipation efficiency is low due to poor adaptability of a thermal management module to different working states of a battery device.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows:

In a first aspect, an embodiment of the application provides an energy storage device, which comprises a battery device, a heat management module, a cold accumulation structure, a first multi-way valve and a second multi-way valve, wherein the battery device comprises a heat exchange inlet and a heat exchange outlet, the cold accumulation structure comprises a cold accumulation inlet and a cold accumulation outlet, the heat management module comprises a refrigeration assembly and a heat exchanger, the heat exchanger comprises a first heat exchange part and a second heat exchange part, the first heat exchange part comprises a first input end and a first output end, the second heat exchange part comprises a second input end and a second output end, the refrigeration assembly is arranged between the first input end and the first output end in series, the first multi-way valve comprises a first valve port, a second valve port and a third valve port, the first valve port is connected with the second output end, the second valve port is connected with the heat exchange inlet, the third valve port is connected with the cold accumulation inlet, the second multi-way valve comprises a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected with the heat exchange outlet, the fifth valve port is connected with the second input end, and the sixth valve port is connected with the cold accumulation outlet.

The energy storage device has the advantages that the flow and the flow path of the cooling medium can be distributed by using the first multi-way valve and the second multi-way valve, the heating value of the battery device is lower under the condition that the battery device runs at a low multiplying power, the cooling medium can be distributed into the cold storage structure by the first multi-way valve and the second multi-way valve to store cold energy, the heating value of the battery device is higher under the condition that the battery device runs at a high multiplying power, the cooling medium can be distributed into the battery device by the first multi-way valve and the second multi-way valve to cool, and the cooling medium stored in the cold storage structure can be synchronously led out to assist cooling, so that the battery device can achieve better heat dissipation effect under different working states, and the heat dissipation efficiency of the battery device can be effectively improved.

In some embodiments, the refrigeration assembly includes a compressor, a fan having an air inlet end directed toward the dryer, a condenser disposed in series between the first input end and the first output end, and a compressor having an inlet end connected to the first valve port and an outlet end connected to the fifth valve port.

By adopting the technical scheme, the compressor and the condenser can compress and refrigerate the refrigeration medium and circularly feed the refrigeration medium into the first heat exchange part so as to perform heat exchange refrigeration on the cooling medium in the second heat exchange part, and meanwhile, the drier-cooler can naturally cool the cooling medium by utilizing the fan, so that the condition of low-rate operation of the battery device can be dealt with, and meanwhile, the energy consumption of refrigeration by adopting the compressor can be effectively reduced.

In some embodiments, the condenser is disposed on the dryer, the fan is disposed on a side of the condenser facing away from the dryer, and an air inlet end of the fan faces the condenser.

Through adopting foretell technical scheme, with fan, condenser and the integrated setting of dry and cold ware, utilize the dry and cold air in the fan introduction environment to carry out natural cooling to dry and cold ware and condenser in proper order, can effectively reduce the energy consumption that adopts the compressor refrigeration.

In some embodiments, the inlet end is disposed at one end of the chiller proximate to the condenser and the outlet end is disposed at the other end of the chiller opposite the condenser.

By adopting the technical scheme, the dry and cold air introduced by the fan flows from the outlet end side of the dry cooler to the inlet end side of the dry cooler and is fully contacted with the coil pipe of the dry cooler, so that the temperature of the cooling medium led out from the outlet end of the dry cooler can be effectively ensured.

In some embodiments, the energy storage device further comprises a third multi-way valve disposed between the second multi-way valve, the input end and the inlet end, the third multi-way valve comprising a seventh port, an eighth port, and a ninth port, the seventh port being connected to the second input end, the eighth port being connected to the inlet end, the ninth port being connected to the fifth port.

By adopting the technical scheme, the cooling medium can be distributed to the second heat exchange part or the dry cooler by the third multi-way valve so as to meet the refrigeration requirements of the battery device on the cooling medium under different working states.

In some embodiments, the energy storage device further comprises a first circulation pump disposed between the second multi-way valve and the third multi-way valve.

Through adopting foretell technical scheme, utilize first circulating pump can effectively promote the mobility of coolant to further promote and utilize coolant heat exchange radiating effect.

In some embodiments, the energy storage device further comprises a fourth multi-way valve disposed between the first multi-way valve, the second output port and the outlet port, the fourth multi-way valve comprising a tenth port, an eleventh port, and a twelfth port, the tenth port being coupled to the second output port, the eleventh port being coupled to the outlet port, the twelfth port being coupled to the first port.

By adopting the technical scheme, the cooling medium in the dry cooler or the second heat exchange part can be used for heat dissipation of the battery device or cold storage of the cold storage structure by using the fourth multi-way valve, so that the heat dissipation requirement of the battery device under different working states can be met.

In some embodiments, the first multi-way valve further comprises a thirteenth port connected to the fourth port.

By adopting the technical scheme, the cooling medium led out from the dry cooler or the second heat exchange part can be directly led back to the dry cooler or the second heat exchange part by utilizing the first multi-way valve, so that the purpose of low-power circulating flow is realized.

In some embodiments, the energy storage device further comprises a second circulation pump disposed between the first multi-way valve and the cold storage inlet.

By adopting the technical scheme, the fluidity of the cooling medium can be further improved by using the second circulating pump, so that the smoothness of the cold storage structure for guiding the cooling medium is further improved.

In some embodiments, the energy storage device further comprises a controller, a temperature sensor, a flow meter and a pressure sensor, wherein the controller is electrically connected with the first multi-way valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the first circulating pump, the second circulating pump, the temperature sensor, the flow meter and the pressure sensor, the temperature sensor is used for monitoring the temperatures of the battery device and the cooling medium, the flow meter is used for monitoring the flow rate of the cooling medium, and the pressure sensor is used for monitoring the pressure of the cooling medium.

Through adopting foretell technical scheme, utilize temperature sensor, flowmeter and pressure sensor to monitor battery device's temperature, coolant's temperature, flow and pressure, utilize the controller can realize the automatic control of first multiport valve, second multiport valve, third multiport valve and fourth multiport valve.

In some embodiments, the energy storage device further comprises a cabinet, the battery device, the refrigeration assembly and the heat exchanger are disposed in the cabinet, and the cold storage structure is disposed outside the cabinet.

Through adopting foretell technical scheme, the cabinet body can be to battery device, refrigeration subassembly and heat exchanger cover and set up the protection, simultaneously, with cold-storage structure external arrangement cabinet body can reduce the occupation of cold-storage structure to cabinet body inner space.

In some embodiments, the cold storage structure is buried under the cabinet.

Through adopting foretell technical scheme, bury the cold-storage structure in the below of the cabinet body, the heat preservation effect of cold-storage structure is better, and the space influence of cold-storage structure to cabinet body week side is lower.

In a second aspect, an embodiment of the present application further provides an energy storage system, including a power conversion device and an energy storage device as described above, where the power conversion device is used to electrically connect a power generation device and the energy storage device.

The energy storage system provided by the embodiment of the application comprises the energy storage device, so that the heat dissipation efficiency of the energy storage system to the battery device is higher.

In a third aspect, an embodiment of the present application further provides a charging network, including a charging pile and an energy storage device as described above or an energy storage system as described above, where the energy storage device is configured to provide electric energy for the charging pile.

The charging network provided by the embodiment of the application comprises the energy storage device or the energy storage system, so that the heat dissipation efficiency of the charging network is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of an energy storage device according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating connection of a first thermal management module, a cold storage structure, and a battery device according to an embodiment of the present application;

FIG. 3 is a schematic diagram illustrating connection of a second thermal management module, a cold storage structure, and a battery device according to an embodiment of the present application;

FIG. 4 is an enlarged schematic view of a portion of FIG. 3;

FIG. 5 is a schematic diagram illustrating a third thermal management module, a cold storage structure, and a battery device according to an embodiment of the present application;

FIG. 6 is an enlarged schematic view of a portion of FIG. 5 at B;

fig. 7 is a schematic structural diagram of an energy storage system according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a charging network according to an embodiment of the present application.

Wherein, each reference sign in the figure:

1000. An energy storage device;

2000. 2100, power conversion device 2200, power generation device;

3000. Charging network 3100, charging pile 3110, connector;

100. A cabinet body;

200. A battery device; 201, a heat exchange inlet, 202, a heat exchange outlet;

300. Thermal management module 310, refrigeration assembly 311, compressor 312, fan 313, dry cooler 313a, inlet end 313b, outlet end 314, condenser;

320. The heat exchanger comprises a heat exchanger 321a, a first input end, a 321b, a first output end, a 322a, a second input end, a 322b, a second output end, a 330, a first circulating pump, a 340 and a second circulating pump;

400. A cold accumulation structure; 401, cold accumulation inlet, 402, cold accumulation outlet;

500. First multi-way valve 501, first valve port 502, second valve port 503, third valve port 504, thirteenth valve port;

600. Second multi-way valve 601, fourth valve port 602, fifth valve port 603, sixth valve port;

700. Third multi-way valve 701, seventh valve port, 702, eighth valve port, 703, ninth valve port;

800. Fourth multi-way valve, 801, tenth valve port, 802, eleventh valve port, 803, twelfth valve port.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.

In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

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

New energy batteries are increasingly used in life and industry, for example, new energy automobiles having a battery mounted therein have been widely used, and in addition, batteries are increasingly used in the field of energy storage and the like. The energy storage system is used as a supplement and standby system of the power grid, and can operate with high power to balance the load of the power grid under the conditions of fluctuation or electric energy shortage of the power grid. While energy storage systems generate a significant amount of heat under high power operation, a degree of cooling is required. The energy storage system mainly uses a heat management module to compress and refrigerate a cooling medium and provide the cooling medium to the battery device for heat exchange and cooling, however, under different working states of the battery device, the heat productivity of the battery device is different, and the adaptability of the heat management module is poor, so that the heat dissipation efficiency of the battery device is low.

Based on the above, in order to solve the problem that the heat efficiency is low due to poor adaptability of the thermal management module to different working states of the battery device, the energy storage device is designed, the first multi-way valve and the second multi-way valve are used for distributing cooling media, when the battery device runs at high multiplying power, the heat productivity of the battery device is large, the first multi-way valve and the second multi-way valve can conduct the second heat exchange part, the battery device and the cold accumulation structure, the cooling capacity stored in the second heat exchange part and the cold accumulation tank is used for synchronously cooling the battery cell, when the battery device runs at low multiplying power, the heat productivity of the battery device is small, the first multi-way valve and the second multi-way valve can conduct the second heat exchange part and the cold accumulation structure, so that the cooling media are led into the cold accumulation structure for storage, and therefore, according to the heat productivity of the battery device in different working states, the first multi-way valve and the second multi-way valve can distribute the cooling media to different paths, so that the heat dissipation effect of the battery device can be better in different working states, and the heat dissipation efficiency of the battery device can be effectively improved.

The energy storage device disclosed by the embodiment of the application can be used in fixed or movable energy stations, such as an energy storage container, an energy storage power distribution cabinet, an energy storage and charging integrated machine, an energy storage power station, a power exchange station and the like, but is not limited to the energy storage device.

The energy storage device provided by the embodiment of the application will be described below.

Embodiments of the present application provide an energy storage device including one or more battery clusters to boost the voltage and capacity of the energy storage device. The battery cluster may include a plurality of battery devices connected in series through a bus member to increase the voltage of the energy storage device. When the energy storage device comprises a plurality of battery clusters, the battery clusters are connected in parallel to improve the capacity of the energy storage device.

Wherein the battery device may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells connected in series, parallel, or series-parallel by a bus member.

In some embodiments, the battery cell assembly is generally formed from a plurality of battery cells arranged.

As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by binding a plurality of battery cells by a tie.

In some embodiments, the battery device may be a battery pack including a housing and one or more battery cell assemblies housed in the housing.

As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be received in the case by fixing the battery module in the case.

As an example, the battery cell assembly may be accommodated in the case by directly fixing the plurality of battery cells to the case.

In the embodiment of the application, the battery cell can be a secondary battery, and the secondary battery refers to a battery cell which can activate the active material in a charging mode to continue to use after the battery cell discharges.

The battery cell may be a lithium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited by the embodiment of the application.

The energy storage device can be used for an energy storage power station, a wind power generation system, a solar power generation system, a mobile power system or a temporary power supply system and the like. The energy storage device may store electrical energy as needed and output electrical energy when appropriate. For example, the energy storage device may store electrical energy during low power usage and provide electrical energy to an associated consumer or consumer during peak power usage. The energy storage system provided by the embodiment of the application can be any power system needing an energy storage device.

In some embodiments, the energy storage device is an energy storage container or an energy storage electrical cabinet.

In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed in the cabinet.

In some embodiments, the energy storage device may include modules such as a thermal management module, a master control module, a power distribution module, and a fire protection module.

As an example, the thermal management module may include a liquid cooling unit that supplies cooling liquid for adjusting the temperature of the battery cells to each battery device through a pipe.

As an example, the main control module may be used as a battery management unit of the battery cluster, for monitoring and managing the battery cluster. The main control module can monitor information such as current, voltage, power or temperature of the battery cluster. For example, charge-discharge current, voltage, etc. of the battery cluster may be controlled. The main control module comprises an auxiliary battery management unit SBMU (Slave Battery Management Unit, SBMU), a fusion switch and other modules.

As an example, the master control module may be used as a battery management unit of the energy storage device for monitoring and managing the energy storage device. The master control module can monitor information such as current, voltage, power, state of charge or temperature of the energy storage device. For example, the charge-discharge current, voltage, etc. of the energy storage device may be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a main battery management unit MBMU (Master Battery Management Unit, MBMU), an EtherNet ETH (ETH), and an optical fiber conversion module.

As an example, the fire module includes a control panel, a detector, an alarm device, etc., for detecting, alarming, or extinguishing a fire of the energy storage system.

As an example, the power distribution module may be used to distribute power to modules of the energy storage device that require power.

Referring to fig. 1 and 2, an embodiment of the application provides an energy storage device 1000, which comprises a battery device 200, a thermal management module 300, a cold storage structure 400, a first multi-way valve 500 and a second multi-way valve 600, wherein the battery device 200 comprises a heat exchange inlet 201 and a heat exchange outlet 202, the cold storage structure 400 comprises a cold storage inlet 401 and a cold storage outlet 402, the thermal management module 300 comprises a refrigeration component 310 and a heat exchanger 320, the heat exchanger 320 comprises a first heat exchange part and a second heat exchange part (the first heat exchange part and the second heat exchange part are not shown in the figure), the first heat exchange part comprises a first input end 321a and a first output end 321b, the second heat exchange part comprises a second input end 322a and a second output end 322b, the refrigeration component 310 is arranged between the first input end 321a and the first output end 321b in series, the first multi-way valve 500 comprises a first valve port 501, a second valve port 503 and a third valve port 503, the first valve port 501 is connected with the second output end 322b, the second valve port 502 is connected with the heat exchange inlet 201, the third valve port 401 is connected with the third valve port 401, the second valve port 600 comprises a fourth valve port 600 and the fifth valve port 602 is connected with the sixth valve port 601 and the sixth valve port 601 is connected with the sixth valve port 601.

The battery device 200 according to embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include a plurality of battery cells connected in series, parallel, or series-parallel by a bus member.

In some embodiments, the battery device 200 may be a battery pack including a case and one or more battery cell assemblies housed in the case.

As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the case in such a manner that the battery module is fixed in the case.

As an example, the battery cell assembly may be accommodated in the case by directly fixing a plurality of battery cells to the case.

As an example, the case may include a first case and a second case. The first box body and the second box body are buckled, so that a closed space is formed inside the box body to accommodate the battery cell assembly. The closing means covering or closing, and can be sealing or unsealing. The first housing may be a top cover or a bottom plate.

As an example, the case may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected with the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

The battery cell may be a secondary battery, and the secondary battery refers to a battery cell that can activate the active material by charging after the battery cell is discharged and then continue to be used.

The battery device 200 comprises a heat exchange inlet 201 and a heat exchange outlet 202, wherein the heat exchange inlet 201 is used for introducing a cooling medium so that the cooling medium can be introduced into the battery device 200 and flow in a specific flow channel for the purpose of heat exchange and heat dissipation. Illustratively, in some embodiments, the specific flow channel may be a liquid cooling flow channel integrated into a wall of the tank. The heat exchange outlet 202 is used for guiding out the cooling medium so that the overheated cooling medium formed by heat exchange in the battery device 200 is guided out of the battery device 200.

The thermal management module 300 is used to circulate a cooling medium. The heat management module 300 comprises a refrigeration assembly 310 and a heat exchanger 320, wherein the refrigeration assembly 310 is used for circularly refrigerating a refrigeration medium, the heat exchanger 320 comprises a first heat exchange part and a second heat exchange part, the refrigeration assembly 310 is used for refrigerating the refrigeration medium and guiding the refrigeration medium into the first heat exchange part, so that the refrigeration medium can fully exchange heat with the cooling medium in the second heat exchange part in the first heat exchange part, and the purpose of refrigerating the cooling medium is achieved. In some embodiments, the heat exchanger 320 may be a plate heat exchanger, such that the first and second heat exchanging portions are a cooling medium flow passage and a cooling medium flow passage, respectively, formed by metal plates.

The first heat exchange part includes a first input end 321a and a first output end 321b, the first input end 321a is used for guiding the refrigerant medium into the first heat exchange part, and the first output end 321b is used for guiding the refrigerant medium out of the first heat exchange part. The refrigeration unit 310 is disposed in series between the first input end 321a and the first output end 321b, whereby the refrigeration unit 310 is capable of refrigerating a refrigerant medium and the refrigerant medium can be circulated into the first heat exchange portion.

The second heat exchange part includes a second input end 322a and a second output end 322b, the second input end 322a is used for guiding the cooling medium into the second heat exchange part, and the second output end 322b is used for guiding the cooling medium out of the second heat exchange part.

The first multi-way valve 500 is a valve device for fluid control, and may change connection states of different channels in a valve body of the first multi-way valve 500, that is, control opening and closing states of different valve ports of the first multi-way valve 500, by rotating, pushing and pulling or other mechanical operation modes, so as to implement switching of fluid flow paths. Alternatively, the first multi-way valve 500 may be a three-way valve, a four-way valve, etc., and in some embodiments, the first multi-way valve 500 may employ a solenoid valve.

The first valve port 501 of the first multi-way valve 500 is connected to the second output end 322b, the second valve port 502 is connected to the heat exchange inlet 201, and the third valve port 503 is connected to the cold storage inlet 401, so that at least two of the second output end 322b, the heat exchange inlet 201, and the cold storage inlet 401 can be connected by controlling the on-off state of the first multi-way valve 500.

The second multi-way valve 600 is a valve device for fluid control, and may change connection states of different channels in a valve body of the second multi-way valve 600, that is, control opening and closing states of different valve ports of the second multi-way valve 600, by rotating, pushing and pulling or other mechanical operation modes, so as to implement switching of fluid flow paths. Alternatively, the second multi-way valve 600 may be a three-way valve, a four-way valve, etc., and in some embodiments, the second multi-way valve 600 may employ a solenoid valve.

The fourth valve port 601 of the first multi-way valve 500 is connected to the heat exchange outlet 202, the fifth valve port 602 is connected to the second input end 322a, and the sixth valve port 603 is connected to the cold accumulation outlet 402, so that at least two of the second input end 322a, the cold accumulation outlet 402 and the heat exchange outlet 202 can be conducted by controlling the on-off state of the second multi-way valve 600.

In this way, by controlling the on-off of the first multi-way valve 500 and the second multi-way valve 600, different circulation modes of the cooling medium in the three of the cold accumulation structure 400, the battery device 200, and the second heat exchanging part can be realized.

Illustratively, in the first embodiment, when the first valve port 501 and the second valve port 502 of the first multi-way valve 500 are controlled to be opened and the third valve port 503 is controlled to be closed, and the fourth valve port 601 and the fifth valve port 602 of the second multi-way valve 600 are controlled to be opened and the sixth valve port 603 is controlled to be closed, the second heat exchanging part is conducted with the battery device 200, and the second heat exchanging part is capable of circularly introducing a cooling medium into the battery device 200 to achieve heat dissipation.

Or in the second embodiment, when the first valve port 501 and the third valve port 503 of the first multi-way valve 500 are controlled to be opened and the second valve port 502 is controlled to be closed, the second heat exchange portion is communicated with the cold accumulation structure 400, the second heat exchange portion can introduce the cooling medium into the cold accumulation structure 400 to achieve the purpose of storing cold, at the moment, the fourth valve port 601 and the sixth valve port 603 of the second multi-way valve 600 can be controlled to be opened and the fifth valve port 602 is controlled to be closed, so that the cooling medium stored in the cold accumulation structure 400 is continuously introduced into the second heat exchange portion for low-power circulation refrigeration, or the fourth valve port 601, the fifth valve port 602 and the sixth valve port 603 are controlled to be closed, so that the cooling medium is completely introduced into and stored in the cold accumulation structure 400.

Alternatively, in the third embodiment, when the second valve port 502 and the third valve port 503 of the first multi-way valve 500 are controlled to be opened and the first valve port 501 is controlled to be closed, and the fifth valve port 602 and the sixth valve port 603 of the second multi-way valve 600 are controlled to be opened and the fourth valve port 601 is controlled to be closed, the cooling medium can circulate in the battery device 200 and the cold storage structure 400, i.e., the battery device 200 is cooled by the cooling medium stored in the cold storage structure 400.

Or in the fourth embodiment, when the first, second and third ports 501, 502 and 503 of the first multi-way valve 500 are controlled to be opened and the fourth, fifth and sixth ports 601, 602 and 603 of the second multi-way valve 600 are controlled to be opened, the cooling medium can circulate in the second heat exchanging part, the battery device 200 and the cold accumulation structure 400.

The cold storage structure 400 is used for storing cooling medium, and the cold storage structure 400 can be, but is not limited to, a container with heat preservation function, such as a cold storage tank, a cold storage barrel, a cold storage box and the like. The cold accumulation structure 400 can store the cooling medium, and in the case of high-power operation of the battery device 200, the cold accumulation structure 400 can guide out the stored cooling medium and is used for realizing cooling, so that the refrigeration power requirement on the refrigeration assembly 310 can be effectively reduced, and the refrigeration energy consumption can be further reduced.

It should be understood that the above-mentioned cooling medium refers to the fluid medium circulating in the first heat exchange portion and the cooling module 310, and the above-mentioned cooling medium refers to the fluid medium flowing in the second heat exchange portion, the cold storage structure 400 and the battery device 200, and that the cooling medium is used to perform a cooling function on the cooling medium in the heat exchanger 320, and the cooling medium is cooled by the cooling module 310.

According to the energy storage device 1000 provided by the embodiment of the application, the flow and the flow path of the cooling medium can be distributed by using the first multi-way valve 500 and the second multi-way valve 600, under the condition that the battery device 200 operates at a low multiplying power, the heating value of the battery device 200 is lower, the first multi-way valve 500 and the second multi-way valve 600 can distribute the cooling medium into the cold accumulation structure 400 to store cold energy, under the condition that the battery device 200 operates at a high multiplying power, the heating value of the battery device 200 is higher, the first multi-way valve 500 and the second multi-way valve 600 can distribute the cooling medium into the battery device 200 to cool, and the cooling medium stored in the cold accumulation structure 400 can be synchronously led out to assist cooling, so that the battery device 200 can realize better heat dissipation effect under different working states, and the heat dissipation efficiency of the battery device 200 can be effectively improved.

Referring to fig. 3 and 4, in some embodiments, the refrigeration assembly 310 includes a compressor 311, a fan 312, a dryer 313 and a condenser 314, wherein an air inlet end of the fan 312 faces the dryer 313, the condenser 314 and the compressor 311 are disposed in series between a first input end 321a and a first output end 321b, the dryer 313 includes an inlet end 313a and an outlet end 313b, the outlet end 313b is connected to the first valve port 501, and the inlet end 313a is connected to the fifth valve port 602.

The refrigerating assembly 310 includes a compressor 311, a blower 312, a dry cooler 313 and a condenser 314, the compressor 311 has a main function of compressing a refrigerating medium to form a gas and increasing its pressure and temperature to power a refrigerating cycle, the condenser 314 has a main function of cooling and condensing a high-temperature and high-pressure refrigerating medium discharged from the compressor 311 to a liquid, the blower 312 is used for guiding air to form a flow and forming a heat dissipation function for the dry cooler 313, the dry cooler 313 uses air introduced by the blower 312 to generate convection and heat exchange to transfer heat from the cooling medium in the dry cooler 313 to the air to realize natural cooling treatment of the cooling medium.

The condenser 314 and the compressor 311 are disposed in series between the first input end 321a and the first output end 321b, whereby the condenser 314 and the compressor 311 can cool the refrigerant medium and circulate into the first heat exchanging portion.

The outlet end 313b of the drier-cooler 313 is connected to the first valve port 501, the inlet end 313a is connected to the fifth valve port 602, namely, the first valve port 501 can be connected with the outlet end 313b of the drier-cooler 313 and the second input end 322a of the second heat exchange part at the same time, the cooling medium led out of the first valve port 501 can be led into the outlet end 313b and the second input end 322a at the same time, the fifth valve port 602 can be connected with the inlet end 313a of the drier-cooler 313 and the second output end 322b of the second heat exchange part at the same time, and both the cooling medium led out of the inlet end 313a and the cooling medium led out of the second output end 322b can be led into the fifth valve port 602. Thus, the dry cooler 313 can be turned on by controlling the on-off state of the first valve port 501 and the fifth valve port 602, so that the dry cooler 313 and the second heat exchanging part synchronously supply the cooling medium.

The arrangement of the compressor 311 and the condenser 314 can compress and refrigerate the refrigerant and circularly feed the refrigerant into the first heat exchange part so as to perform heat exchange refrigeration on the refrigerant in the second heat exchange part, and simultaneously, the drier-cooler 313 naturally cools the refrigerant by the fan 312, so that the situation when the battery device 200 operates at a low rate can be dealt with, and meanwhile, the energy consumption for refrigerating by adopting the compressor 311 can be effectively reduced.

Referring to fig. 3, in some embodiments, the condenser 314 is disposed on the dryer 313, the fan 312 is disposed on a side of the condenser 314 facing away from the dryer 313, and an air inlet end of the fan 312 faces the condenser 314.

The fan 312, the dry cooler 313 and the condenser 314 are integrally arranged, namely, the dry cooler 313 is arranged on one side of the condenser 314, the fan 312 is arranged on the other side opposite to the condenser 314, the air inlet end of the fan 312 faces the condenser 314, so that dry and cold air introduced from the air inlet end of the fan 312 can firstly pass through the dry cooler 313 and naturally cool a cooling medium in the dry cooler 313, the heat in the dry cooler 313 is absorbed by the dry and cold air to form primary dry and hot air, the primary dry and hot air can further carry out heat exchange refrigeration treatment on a gaseous cooling medium formed by compression in the condenser 314, and the heat in the primary dry and hot air is absorbed by the heat in the condenser 314 to form secondary dry and hot air which is discharged from the air outlet end of the fan 312.

By means of the arrangement, the fan 312, the condenser 314 and the dry cooler 313 are integrally arranged, the dry cooler 313 and the condenser 314 are naturally cooled in sequence by dry cooling air introduced into the environment by the fan 312, and energy consumption for refrigerating by the compressor 311 can be effectively reduced.

Referring to fig. 3, in some embodiments, an inlet end 313a is disposed at an end of the dry cooler 313 near the condenser 314, and an outlet end 313b is disposed at another end of the dry cooler 313 opposite to the condenser 314.

The arrangement is that the dry and cold air introduced by the fan 312 firstly contacts with one side of the outlet end 313b of the dry and cold device 313, then the dry and cold air fully contacts with the coil structure of the dry and cold device 313, so as to realize the full heat exchange with the cooling medium in the dry and cold device 313, and the flowing direction of the dry and cold air is opposite to the direction of the cooling medium from the inlet end to the outlet end 313b of the dry and cold device 313, thereby effectively improving the heat exchange cooling capacity of the dry and cold air to the cooling medium.

Referring to fig. 1, 3 and 4, in some embodiments, the energy storage device 1000 further includes a third multi-way valve 700, the third multi-way valve 700 is disposed between the second multi-way valve 600, the input end and the inlet end 313a, the third multi-way valve 700 includes a seventh valve port 701, an eighth valve port 702 and a ninth valve port 703, the seventh valve port 701 is connected to the second input end 322a, the eighth valve port 702 is connected to the inlet end 313a, and the ninth valve port 703 is connected to the fifth valve port 602.

The third multi-way valve 700 is a valve device for fluid control, and may change connection states of different channels in the valve body of the third multi-way valve 700, that is, control opening and closing states of different valve ports of the third multi-way valve 700, through rotation, push-pull or other mechanical operation modes, so as to realize switching of fluid flow paths. Alternatively, the third multi-way valve 700 may be a three-way valve, a four-way valve, etc., and in some embodiments, the third multi-way valve 700 may employ a solenoid valve.

The seventh port 701 of the third multi-way valve 700 is connected to the second input port 322a, the eighth port 702 is connected to the inlet port 313a, and the ninth port 703 is connected to the fifth port 602, whereby at least two of the second input port 322a, the inlet port 313a, and the fifth port 602 can be communicated by controlling the third multi-way valve 700. As described above, by controlling the on/off of the third multi-way valve 700, it is possible to distribute the cooling medium led out from the battery device 200 or the cooling medium led out from the cold storage structure 400 to the second heat exchange portion or the dry cooler 313, and to selectively perform compression cooling or air-cooled natural cooling according to the circumstances.

So configured, the third multi-way valve 700 may be utilized to distribute the cooling medium to the second heat exchange portion or the dry cooler 313, so as to meet the refrigeration requirements of the cooling medium in different working states of the battery device 200.

Referring to fig. 1, 3 and 4, in some embodiments, the energy storage device 1000 further includes a first circulation pump 330, and the first circulation pump 330 is disposed between the second multi-way valve 600 and the third multi-way valve 700.

The first circulation pump 330 serves to supply power to the cooling medium so that the cooling medium flows more smoothly. It should be appreciated that the first circulation pump 330 is disposed between the second multi-way valve 600 and the third multi-way valve 700, i.e., the first circulation pump 330 is located between the ninth valve port 703 and the fifth valve port 602, whereby the first circulation pump 330 is capable of acting on the heat exchange outlet 202 connected to the fourth valve port 601 of the second multi-way valve 600 and the cold storage outlet 402 connected to the sixth valve port 603 to enable a smooth removal of cooling medium from within the battery device 200 and within the cold storage structure 400.

By the arrangement, the fluidity of the cooling medium can be effectively improved by using the first circulating pump 330, so that the heat exchange and heat dissipation effect of the cooling medium can be further improved.

Referring to fig. 1, 3 and 4, in some embodiments, the energy storage device 1000 further includes a fourth multi-way valve 800, the fourth multi-way valve 800 is disposed between the first multi-way valve 500, the second output end 322b and the outlet end 313b, the fourth multi-way valve 800 includes a tenth valve port 801, an eleventh valve port 802 and a twelfth valve port 803, the tenth valve port 801 is connected to the second output end 322b, the eleventh valve port 802 is connected to the outlet end 313b, and the twelfth valve port 803 is connected to the first valve port 501.

The fourth multi-way valve 800 is a valve device for fluid control, and may change connection states of different channels in the valve body of the fourth multi-way valve 800, that is, control opening and closing states of different valve ports of the fourth multi-way valve 800, by rotating, pushing and pulling or other mechanical operation modes, so as to implement switching of fluid flow paths. Alternatively, the fourth multi-way valve 800 may be a three-way valve, a four-way valve, etc., and in some embodiments, the fourth multi-way valve 800 may employ a solenoid valve.

The tenth port 801 of the fourth multi-way valve 800 is connected to the second output port 322b, the eleventh port 802 is connected to the outlet port 313b, and the twelfth port 803 is connected to the first port 501, whereby at least two of the second output port 322b, the outlet port 313b, and the first port 501 can be communicated by controlling the fourth multi-way valve 800. In this manner, by controlling the on-off of the fourth multi-way valve 800, the option of using the dry cooler 313 or the refrigeration assembly 310 in combination with the heat exchanger 320 to provide a cold junction medium to the battery device 200 to achieve a reduced temperature may be achieved.

Illustratively, in the first embodiment, the tenth valve port 801 and the twelfth valve port 803 of the fourth multi-way valve 800 are opened and the eleventh valve port 802 is closed, the first valve port 501, the second valve port 502, and the third valve port 503 of the first multi-way valve 500 are all opened, and at the same time, the fourth valve port 601, the fifth valve port 602, and the sixth valve port 603 of the second multi-way valve 600 are all opened, the seventh valve port 701 and the ninth valve port 703 of the third multi-way valve 700 are opened and the tenth valve port 801 is closed, the cooling medium is supplied to the battery cell by the refrigeration assembly 310 and the heat exchanging part, and the cold storage structure 400 synchronously guides the cooling medium to reduce the load of the refrigeration assembly 310.

In the second embodiment, the eleventh port 802 and the twelfth port 803 of the fourth multi-way valve 800 are opened and the tenth port 801 is closed, the first port 501 and the second port 502 of the first multi-way valve 500 are opened and the third port 503 is closed, and at the same time, the fourth port 601 and the fifth port 602 of the second multi-way valve 600 are opened and the sixth port 603 is closed, the eighth port 702 and the ninth port 703 of the third multi-way valve 700 are opened and the seventh port 701 is closed, and the cooling medium is naturally cooled by the drier-cooler 313 and circulated into the battery device 200 for heat exchange and radiation.

In the third embodiment, the eleventh port 802 and the twelfth port 803 of the fourth multi-way valve 800 are opened and the tenth port 801 is closed, the first port 501 and the third port 503 of the first multi-way valve 500 are opened and the second port 502 is closed, and at the same time, the fifth port 602 and the sixth port 603 of the second multi-way valve 600 are opened and the fourth port 601 is closed, the eighth port 702 and the ninth port 703 of the third multi-way valve 700 are opened and the seventh port 701 is closed, and the cooling medium is naturally cooled by the drier-cooler 313 and is circulated to be introduced into the cold storage structure 400 to store cold.

In the fourth embodiment, the tenth valve port 801 and the twelfth valve port 803 of the fourth multi-way valve 800 are opened and the eleventh valve port 802 is closed, the first valve port 501 and the third valve port 503 of the first multi-way valve 500 are opened and the second valve port 502 is closed, and at the same time, the fifth valve port 602 and the sixth valve port 603 of the second multi-way valve 600 are opened and the fourth valve port 601 is closed, the seventh valve port 701 and the ninth valve port 703 of the third multi-way valve 700 are opened and the tenth valve port 801 is closed, and the cooling medium is cooled by the compressor 311, the condenser 314 and the heat exchanger 320 and is circulated to the cold storage structure 400 to store cold.

So arranged, the fourth multi-way valve 800 can also select to use the cooling medium in the dry cooler 313 or the second heat exchange portion for heat dissipation of the battery device 200 or cold storage of the cold storage structure 400, so as to meet the heat dissipation requirements of the battery device 200 in different working states.

Referring to fig. 1, 5, and 6, in some embodiments, the first multi-way valve 500 further includes a thirteenth port 504, the thirteenth port 504 being connected to the fourth port 601.

In this embodiment, the first multi-way valve 500 may be a four-way valve, and the thirteenth port 504 of the first multi-way valve 500 is connected to the fourth port 601 of the second multi-way valve 600. In this way, the naturally cooled cooling medium introduced from the main cooler 313 to the first valve port 501 or the compressed cooled cooling medium introduced from the second heat exchange portion to the first valve port 501 can be switched to a plurality of distribution modes by the first multi-way valve 500, and the first valve port 501 and the second valve port 502 can be opened to introduce the cooling medium into the battery device 200 for heat exchange and cooling, or the first valve port 501 and the third valve port 503 can be opened to introduce the cooling medium into the cold storage structure 400 for storing the cooling capacity, or the first valve port 501 and the thirteenth valve port 504 can be opened to directly introduce the cooling medium into the fourth valve port 601 of the second multi-way valve 600 without passing through the battery device 200 and the cold storage structure 400, and the cooling medium is returned from the fifth valve port 602 or the sixth valve port 603 of the second multi-way valve 600 to the main cooler 313 or the second heat exchange portion, so as to realize low-power self-circulation flow of the cooling medium.

In this way, the cooling medium led out from the main cooler 313 or the second heat exchange unit can be directly led back to the main cooler 313 or the second heat exchange unit by the first multi-way valve 500, so that the purpose of low-power circulation flow is achieved, and a low-power standby state is achieved when heat dissipation from the battery device 200 and cold storage of the cold storage structure 400 are not required.

Referring to fig. 1,3 and 4, in some embodiments, the energy storage device 1000 further includes a second circulation pump 340, and the second circulation pump 340 is disposed between the first multi-way valve 500 and the cold storage inlet 401.

The second circulation pump 340 serves to power the cooling medium so that the cooling medium flows more smoothly. It should be understood that the second circulation pump 340 is disposed between the first multi-way valve 500 and the cold accumulation inlet 401, whereby the second circulation pump 340 can act on the main cooler 313 and the second heat exchange portion so that the cooling medium can be smoothly introduced into the cold accumulation structure 400 from the main cooler 313 or the second heat exchange portion.

In this way, the fluidity of the cooling medium can be further improved by the second circulation pump 340, so as to further improve the smoothness of the introduction of the cooling medium into the cold storage structure 400.

Referring to fig. 1, 3 and 4, in some embodiments, the energy storage device 1000 further includes a controller, a temperature sensor, a flow meter and a pressure sensor (specific structures of the controller, the temperature sensor, the flow meter and the pressure sensor are not shown in the drawings), wherein the controller is electrically connected to the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700, the fourth multi-way valve 800, the first circulation pump 330, the second circulation pump 340, the temperature sensor, the flow meter and the pressure sensor, the temperature sensor is used for monitoring the temperatures of the battery device 200 and the cooling medium, the flow meter is used for monitoring the flow rate of the cooling medium, and the pressure sensor is used for monitoring the pressure of the cooling medium.

The controller is electrically connected to the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700 and the fourth multi-way valve 800, so that the controller can be used for respectively controlling the electric signals of the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700 and the fourth multi-way valve 800, and accurately controlling the opening and the opening of different valve ports of each multi-way valve. The controller is electrically connected to the first circulation pump 330 and the second circulation pump 340, so that the pump speeds of the first circulation pump 330 and the second circulation pump 340 can be controlled to realize flow control of the cooling medium, for example, flow rate control of the cooling medium introduced into the cold accumulation structure 400 and flow rate control of the cooling medium led out of the cold accumulation structure 400.

The temperature sensor is used to monitor the temperature of the battery device 200 and the cooling medium, alternatively, the number of the temperature sensors may be plural, and plural temperature sensors are used to monitor the temperature at different places. In some embodiments, a temperature sensor may be provided on the battery device 200 for monitoring the temperature of the battery device 200 and the temperature of the cooling medium introduced into the inside of the battery device 200, a temperature sensor may be provided on the intercooler 313 for monitoring the temperature of the cooling medium from the inlet and outlet ends 313b of the intercooler 313, and a temperature sensor may also be provided on the cold storage structure 400 for monitoring the temperature of the cooling medium stored in the cold storage structure 400.

The flow meter is used for monitoring the flow rate of the cooling medium, and the pressure sensor is used for monitoring the pressure of the cooling medium, wherein the flow meter and the pressure sensor can be arranged at any place, and can be arranged between the second output end 322b and the cold storage inlet 401 or the heat exchange inlet 201, between the outlet end 313b and the cold storage inlet 401 or the heat exchange inlet 201, between the second input end 322a and the cold storage outlet 402 or the heat exchange outlet 202, between the inlet end and the cold storage outlet 402 or the heat exchange outlet 202, and the like.

The controller is also electrically connected to the temperature sensor, the flow meter, and the pressure sensor, such that data monitored by the temperature sensor, the flow meter, and the pressure sensor can be fed back to the controller, so that the controller adjusts the control of the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700, the fourth multi-way valve 800, the first circulation pump 330, and the second circulation pump 340 in real time.

Thus, the temperature of the battery device 200, the temperature, the flow rate, and the pressure of the cooling medium can be monitored by the temperature sensor, the flow meter, and the pressure sensor, and the controller can automatically control the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700, and the fourth multi-way valve 800.

Referring to fig. 1, 3 and 4, in some embodiments, the energy storage device 1000 further includes a cabinet 100, the battery device 200, the refrigeration assembly 310 and the heat exchanger 320 are disposed in the cabinet 100, and the cold storage structure 400 is disposed outside the cabinet 100.

The cabinet 100 is configured to house other components such as the battery device 200, the refrigeration assembly 310, and the heat exchanger 320. Alternatively, the cabinet 100 may include, but is not limited to, a rectangular cabinet 100, a columnar cabinet 100, a box-type cabinet 100, and the like. The cabinet body 100 is an external structure of the integrated storage and charging device, and can cover and protect other components such as the battery device 200, the refrigeration assembly 310, the heat exchanger 320 and the like, so as to reduce the influence of rainwater, dust and the like on the interior of the cabinet body 100. In some embodiments, the cabinet 100 may be made of waterproof, dustproof, and ultraviolet resistant materials, such as polyvinyl chloride, polycarbonate polypropylene, and the like.

The cold accumulation structure 400 is disposed outside the cabinet 100, and alternatively, the cold accumulation structure 400 may be disposed at any position of the top side, the circumferential side, the bottom side, etc. of the outside of the cabinet 100. The cold accumulation structure 400 is arranged outside the cabinet body 100, and the cold accumulation structure 400 is connected with the structures such as the second heat exchange part and the like in the cabinet body 100 through a pipeline structure so as to realize the circulation conduction of the cooling medium.

So set up, the cabinet body 100 can cover the protection to battery device 200, refrigeration subassembly 310 and heat exchanger 320, simultaneously, will hold cold-storage structure 400 external to cabinet body 100 can reduce the occupation of cold-storage structure 400 to cabinet body 100 inner space.

Referring to fig. 1, in some embodiments, a cold storage structure 400 is buried under the cabinet 100.

Alternatively, the cold accumulation structure 400 may be buried directly under the cabinet 100, i.e., in the direction of gravity, the projection of the cold accumulation structure 400 is within the range of the cabinet 100. Or the cold accumulation structure 400 may be buried under a side of the cabinet 100, that is, in a gravitational direction, the projection of the cold accumulation structure 400 is out of the range of the cabinet 100. Or in the gravity direction, the projection of the cold accumulation structure 400 coincides with the projected portion of the cabinet 100. In some embodiments, the cold storage structure 400 may be buried within the ground when the cabinet 100 is installed on the ground.

Wherein, the surface of the cold accumulation structure 400 may be provided with a corrosion resistant layer to reduce the corrosion probability of the cold accumulation structure 400 and improve the service life of the cold accumulation structure 400. Or the surface of the cold accumulation structure 400 can be further provided with an insulating layer to further improve the heat insulation capability of the cold accumulation structure 400 and reduce the rate of cold dissipation.

So set up, bury the cold-storage structure 400 in the below of the cabinet body 100, the heat preservation effect of cold-storage structure 400 is better, and the space influence of cold-storage structure 400 to cabinet body 100 week side is lower.

Next, the energy storage device 1000 is taken as an example of the energy storage and charging integrated machine, and the energy storage device 1000 will be described in further detail.

Referring to fig. 1, 3 and 4, in the present embodiment, an energy storage device 1000 includes a cabinet 100, a battery device 200, a thermal management module 300, a cold storage structure 400, a first multi-way valve 500, a second multi-way valve 600, a third multi-way valve 700 and a fourth multi-way valve 800, wherein the battery device 200 includes a heat exchange inlet 201 and a heat exchange outlet 202, and the cold storage structure 400 includes a cold storage inlet 401 and a cold storage outlet 402.

The thermal management module 300 includes a refrigeration assembly 310 and a heat exchanger 320, the heat exchanger 320 including a first heat exchange portion including a first input 321a and a first output 321b and a second heat exchange portion including a second input 322a and a second output 322b. In the present embodiment, the heat exchanger 320 may be a plate heat exchanger 320.

The refrigeration assembly 310 comprises a compressor 311, a fan 312, a dry cooler 313 and a condenser 314, the condenser 314 is arranged on the dry cooler 313, the fan 312 is arranged on one side of the condenser 314, which is away from the dry cooler 313, and the air inlet end of the fan 312 faces the condenser 314. The condenser 314 and the compressor 311 are disposed in series between the first input 321a and the first output 321b, and the dry cooler 313 includes an inlet 313a and an outlet 313b.

The first multi-port valve 500 comprises a first valve port 501, a second valve port 502 and a third valve port 503, wherein the first valve port 501 is connected with a second output end 322b, the second valve port 502 is connected with a heat exchange inlet 201, the third valve port 503 is connected with a cold accumulation inlet 401, the second multi-port valve 600 comprises a fourth valve port 601, a fifth valve port 602 and a sixth valve port 603, the fourth valve port 601 is connected with a heat exchange outlet 202, the fifth valve port 602 is connected with a second input end 322a, the sixth valve port 603 is connected with a cold accumulation outlet 402, the third multi-port valve 700 comprises a seventh valve port 701, an eighth valve port 702 and a ninth valve port 703, the seventh valve port 701 is connected with a second input end 322a, the eighth valve port 702 is connected with an inlet end 313a, the ninth valve port 703 is connected with a fifth valve port 602, the fourth multi-port valve 800 comprises a tenth valve port 801, an eleventh valve port 802 and a twelfth valve port 801 is connected with a second output end 322b, the eleventh valve port 802 is connected with an outlet end 313b, and the twelfth valve port 803 is connected with the first valve port 501.

The energy storage device 1000 further includes a first circulation pump 330 and a second circulation pump 340, the first circulation pump 330 is disposed between the second multi-way valve 600 and the third multi-way valve 700, and the second circulation pump 340 is disposed between the first multi-way valve 500 and the cold storage inlet 401.

In this way, the cooling medium of the battery device 200 is distributed in different scenes by controlling the first multi-way valve 500, the second multi-way valve 600, the third multi-way valve 700 and the fourth multi-way valve 800, so as to achieve the purpose of efficient heat dissipation.

In the first scenario, when the battery device 200 in the integrated storage and charging machine is discharged at a high rate to achieve the charging function, the battery device 200 generates a large amount of heat, if the temperature of the battery device 200 is higher than the temperature of the cooling medium introduced into the battery device 200, the tenth valve port 801 and the twelfth valve port 803 of the fourth multi-way valve 800 may be opened and the eleventh valve port 802 may be closed, the first valve port 501, the second valve port 502 and the third valve port 503 of the first multi-way valve 500 may be opened, the fourth valve port 601, the fifth valve port 602 and the sixth valve port 603 of the second multi-way valve 600 may be opened, the seventh valve port 701 and the ninth valve port 702 of the third multi-way valve 700 may be opened and the eighth valve port 702 may be closed, and the cooling medium may be circularly cooled by the compressor 311, the condenser 314 and the plate heat exchanger 320 and may be provided to the battery device 200 for heat exchange.

Or in the second scenario, when the battery device 200 in the integrated storage and charging machine is charged at a low rate, and the heat generated by the battery is low, if the temperature of the battery device 200 is lower than the temperature of the cooling medium introduced into the battery device 200 and the ambient temperature is high, that is, the temperature of the cooling medium led out by the drier-cooler 313 is greater than the temperature of the cooling medium stored in the cold storage structure 400, the tenth valve port 801 and the twelfth valve port 803 of the fourth multi-way valve 800 may be opened and the eleventh valve port 802 may be closed, the first valve port 501 and the third valve port 503 of the first multi-way valve 500 may be opened and the second valve port 502 may be closed, the fifth valve port 602 and the sixth valve port 603 of the second multi-way valve 600 may be opened and the fourth valve port 601 may be closed, the seventh valve port 701 and the ninth valve port 703 of the third multi-way valve 700 may be opened and the eighth valve port 702 may be closed, and the cooling medium may be cyclically cooled by the compressor 311, the condenser 314 and the plate heat exchanger 320 and the cold storage structure 400 may be provided for storing the cold.

Or in the third scenario, when the temperature of the battery device 200 is lower than the temperature of the cooling medium introduced into the battery device 200 and the ambient temperature is lower in the state of low-rate charging of the battery device 200 in the integrated storage and charging machine, that is, when the temperature of the cooling medium discharged from the main cooler 313 is lower than the temperature of the cooling medium stored in the cold storage structure 400, the tenth port 801, the eleventh port 802 and the twelfth port 803 of the fourth multi-port valve 800 may be opened, the first port 501 and the third port 503 of the first multi-port valve 500 may be opened and the second port 502 may be closed, the fifth port 602 and the sixth port 603 of the second multi-port valve 600 may be opened and the fourth port 601 may be closed, the seventh port 701, the eighth port 702 and the ninth port 703 of the third multi-port valve 700 may be opened, the cooling medium may be cooled by the compressor 311, the condenser 314 and the plate heat exchanger 320, and the cold storage structure 400 may be naturally cooled by the main cooler 313, and the cold storage may be provided.

Or in the fourth scenario, when the temperature of the battery device 200 is lower than the temperature of the cooling medium introduced into the battery device 200 and the ambient temperature is lower in the state of low-rate charging of the battery device 200 in the integrated storage and charging machine, that is, when the temperature of the cooling medium discharged from the drier-cooler 313 is lower than the temperature of the cooling medium stored in the cold storage structure 400, the eleventh port 802 and the twelfth port 803 of the fourth multi-way valve 800 may be opened and the tenth port 801 may be closed, the first port 501 and the third port 503 of the first multi-way valve 500 may be opened and the second port 502 may be closed, the fifth port 602 and the sixth port 603 of the second multi-way valve 600 may be opened and the fourth port 601 may be closed, the seventh port 701 and the ninth port 703 of the third multi-way valve 700 may be opened and the eighth port 702 may be closed, and the cooling medium may be naturally cooled by the drier-cooler 313 and cooled, and the cold storage structure 400 may be provided therein for storing the cold.

Meanwhile, the following refrigeration method can be adopted according to the ambient temperature and the running time:

The storage and charging all-in-one machine can adopt the refrigeration strategy of the second scene when the ambient temperature is about 15 ℃ at night, can adopt the refrigeration strategy of the third scene when the ambient temperature is about 10 ℃ to 15 ℃, and can adopt the refrigeration strategy of the fourth scene when the ambient temperature is less than about 10 ℃.

The storage and charging integrated machine can adopt the refrigeration strategy of the first scene when in a discharging stage in daytime. Likewise, during the daytime in the charging phase, the cooling mode can be consistent with the night time cooling mode.

Referring to fig. 1 and 7, in a second aspect, an energy storage system 2000 is further provided according to an embodiment of the present application, including a power conversion device 2100 and an energy storage device 1000 as described above, where the power conversion device 2100 is used to electrically connect the power generation device 2200 and the energy storage device 1000.

In some embodiments, energy storage system 2000 may include one or more energy storage devices 1000 and a power conversion device 2100, power conversion device 2100 being configured to be coupled between power generation device 2200 and energy storage device 1000. The power generation device 2200 is configured to generate electric energy, and the electric energy generated by the power generation device 2200 may be stored in the energy storage device 1000 through the power conversion device 2100. As an example, the power generation device 2200 may be specifically a solar panel, a hydro-power generation device 2200, a fire power generation device 2200, a wind power generation device 2200, or the like. The particular type of power generation device 2200 is not a limitation of the present application.

The energy storage system 2000 provided by the embodiment of the application includes the energy storage device 1000, so that the heat dissipation efficiency of the energy storage system 2000 to the battery device 200 is higher.

Referring to fig. 1, 7 and 8, in a third aspect, the embodiment of the present application further provides a charging network 3000, which includes a charging pile 3100 and the energy storage device 1000 or the energy storage system 2000 described above, where the energy storage device 1000 is used to provide electric energy for the charging pile 3100.

The embodiment of the application provides a charging network 3000, which comprises a charging pile 3100 and an energy storage device 1000, wherein the charging pile 3100 is electrically connected with the energy storage device 1000, and the energy storage device 1000 is used for providing electric energy for the charging pile 3100. The charging pile 3100 is electrically connected to the battery device 200 in the energy storage device 1000 through a cable, and the battery device 200 may supply the electric energy stored in itself to the charging pile 3100. Charging pile 3100 has one or more connectors 3110, and connectors 3110 are used to connect with an electric device (e.g., a vehicle) so that the electric device can be supplemented with energy.

The energy storage device 1000 may be located inside the charging pile 3100 (e.g., a storage-charging integrated machine), or may be located outside the charging pile 3100.

The charging network 3000 provided in the embodiment of the present application includes the energy storage device 1000 or the energy storage system 2000, so that the heat dissipation efficiency of the charging network 3000 is higher.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.

Claims

1. An energy storage device, characterized in that:

A battery device, the battery device comprising a heat exchange inlet and a heat exchange outlet;

A thermal management module, the thermal management module comprising a refrigeration component and a heat exchanger, the heat exchanger comprising a first heat exchange part and a second heat exchange part, the first heat exchange part comprising a first input end and a first output end, the second heat exchange part comprising a second input end and a second output end; the refrigeration component is arranged in series between the first input end and the first output end;

A cold storage structure, the cold storage structure comprising a cold storage inlet and a cold storage outlet;

a first multi-way valve, the first multi-way valve comprising a first valve port, a second valve port and a third valve port, the first valve port being connected to the second output end, the second valve port being connected to the heat exchange inlet, and the third valve port being connected to the cold storage inlet; and

The second multi-way valve comprises a fourth valve port, a fifth valve port and a sixth valve port, the fourth valve port is connected to the heat exchange outlet, the fifth valve port is connected to the second input end, and the sixth valve port is connected to the cold storage outlet.

2. The energy storage device according to claim 1, characterized in that: the refrigeration assembly comprises a compressor, a fan, a dry cooler and a condenser, the air inlet end of the fan faces the dry cooler, and the condenser and the compressor are arranged in series between the first input end and the first output end;

The dry cooler comprises an inlet end and an outlet end, the outlet end is connected to the first valve port, and the inlet end is connected to the fifth valve port.

3. The energy storage device according to claim 2, characterized in that: the condenser is arranged on the dry cooler, the fan is arranged on a side of the condenser facing away from the dry cooler, and the air inlet end of the fan faces the condenser.

4 . The energy storage device according to claim 3 , wherein the inlet end is arranged at one end of the dry cooler close to the condenser, and the outlet end is arranged at the other end of the dry cooler facing away from the condenser.

5. The energy storage device according to any one of claims 2 to 4 is characterized in that: the energy storage device also includes a third multi-way valve, and the third multi-way valve is arranged between the second multi-way valve, the input end and the inlet end; the third multi-way valve includes a seventh valve port, an eighth valve port and a ninth valve port, the seventh valve port is connected to the second input end, the eighth valve port is connected to the inlet end, and the ninth valve port is connected to the fifth valve port.

6 . The energy storage device according to claim 5 , characterized in that the energy storage device further comprises a first circulation pump, and the first circulation pump is arranged between the second multi-way valve and the third multi-way valve.

7. The energy storage device according to claim 6 is characterized in that: the energy storage device also includes a fourth multi-way valve, which is arranged between the first multi-way valve, the second output end and the outlet end; the fourth multi-way valve includes a tenth valve port, an eleventh valve port and a twelfth valve port, the tenth valve port is connected to the second output end, the eleventh valve port is connected to the outlet end, and the twelfth valve port is connected to the first valve port.

8 . The energy storage device according to claim 7 , wherein the first multi-way valve further comprises a thirteenth valve port, and the thirteenth valve port is connected to the fourth valve port.

9 . The energy storage device according to claim 7 , further comprising a second circulation pump, wherein the second circulation pump is disposed between the first multi-way valve and the cold storage inlet.

10. The energy storage device according to claim 9 is characterized in that: the energy storage device also includes a controller, a temperature sensor, a flow meter and a pressure sensor; the controller is electrically connected to the first multi-way valve, the second multi-way valve, the third multi-way valve, the fourth multi-way valve, the first circulation pump, the second circulation pump, the temperature sensor, the flow meter and the pressure sensor, the temperature sensor is used to monitor the temperature of the battery device and the cooling medium, the flow meter is used to monitor the flow of the cooling medium, and the pressure sensor is used to monitor the pressure of the cooling medium.

11. The energy storage device according to any one of claims 1 to 4, characterized in that: the energy storage device further comprises a cabinet, the battery device, the refrigeration assembly and the heat exchanger are arranged outside the cabinet, and the cold storage structure is arranged outside the cabinet.

12. The energy storage device according to claim 11, characterized in that the cold storage structure is buried under the cabinet.

13. An energy storage system, characterized in that it comprises a power conversion device and the energy storage device according to any one of claims 1 to 12, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

14. A charging network, characterized in that it comprises a charging pile and an energy storage device according to any one of claims 1 to 12 or an energy storage system according to claim 13, wherein the energy storage device is used to provide electrical energy for the charging pile.