Battery device and energy storage station

Abstract

The invention relates to the technical field of batteries, and provides a battery device and an energy storage station. The battery device comprises a battery module, an energy storage converter, a circulating pipeline, a medium storage box and a heat exchange component. The first heat exchange medium in the main pipeline can flow into the first heat exchange pipeline and the second heat exchange pipeline respectively, and the first heat exchange pipeline is in heat exchange connection with the battery module, so that the first heat exchange medium in the first heat exchange pipeline can exchange heat with the battery module, and the battery module reaches a proper working temperature. A second heat exchange medium in the medium storage box flows into the second heat exchange pipeline, a first heat exchange medium in the main pipeline also flows into the first heat exchange pipeline, and the first heat exchange medium and the second heat exchange medium can be mixed to form a third heat exchange medium with the temperature between the temperature of the first heat exchange medium and the temperature of the second heat exchange medium. And the third heat exchange medium can exchange heat with the energy storage converter. Therefore, the temperature of the energy storage converter is not too low, and condensation on the surface of the energy storage converter is prevented.

Description

Technical Field

[0001] This application relates to a battery device and an energy storage station, belonging to the field of battery technology. Background Technology

[0002] Energy storage stations (also known as energy storage power stations) are core infrastructure of new power systems. They store electrical energy and release it when needed, solving the problem of mismatch between power supply and demand in time and space, and improving grid stability and the ability to absorb new energy sources. Battery packs and energy storage converters are the main components of an energy storage station. The energy storage converter is the core power conversion device connecting the battery packs to the grid / load, responsible for bidirectional conversion between direct current (DC) and alternating current (AC) and controlling the charging and discharging process of the batteries. To ensure the normal operation of the energy storage station, heat exchange devices are needed to control the temperature of the battery packs and energy storage converters at suitable operating temperatures.

[0003] Currently, heat exchange devices in energy storage stations can be used to exchange heat with battery packs and energy storage converters to regulate their temperatures. However, the suitable operating temperatures of battery packs and energy storage converters are different, and the heat exchange devices cannot ensure that both battery packs and energy storage converters are at their suitable operating temperatures. Summary of the Invention

[0004] This application provides a battery device and an energy storage station to solve the problem in related technologies where the heat exchange device in the energy storage station cannot keep both the battery pack and the energy storage converter at a suitable operating temperature.

[0005] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, this application provides a battery device, comprising: Battery module; An energy storage converter is electrically connected to the battery module; The circulation pipeline includes a main pipeline, a first heat exchange pipeline, and a second heat exchange pipeline. The first heat exchange pipeline and the second heat exchange pipeline are connected in parallel, and both the first heat exchange pipeline and the second heat exchange pipeline are connected in series with the main pipeline. The first heat exchange pipeline is connected to the battery module for heat exchange, and the second heat exchange pipeline is connected to the energy storage converter for heat exchange. The main pipeline is configured to deliver a first heat exchange medium to the first heat exchange pipeline and the second heat exchange pipeline. A medium storage box is connected to the second heat exchange pipeline. The medium storage box is configured to store a second heat exchange medium, the temperature of which is higher than that of the first heat exchange medium. A heat exchange assembly is connected to the main pipeline and is configured to exchange heat with a heat exchange medium within the main pipeline.

[0006] In some embodiments, the circulation pipeline further includes a first regulating valve configured to regulate the flow rate of the first heat exchange medium delivered from the main pipeline to the first heat exchange pipeline, or to regulate the flow rate of the second heat exchange medium delivered from the medium storage box to the second heat exchange pipeline.

[0007] In some embodiments, the circulation pipeline further includes a second regulating valve, wherein the first regulating valve is disposed in the second heat exchange pipeline, and the second regulating valve is disposed between the medium storage box and the second heat exchange pipeline.

[0008] In some embodiments, the medium storage box is circulatedly connected to the second heat exchange pipeline.

[0009] In some embodiments, the battery device further includes a housing, in which the battery module and the energy storage converter are both disposed, and the medium storage box is disposed in the housing.

[0010] In some embodiments, the battery module, the heat exchange assembly, and the medium storage box are arranged sequentially along the height of the housing, with the medium storage box located at the top of the housing and a gap between the medium storage box and the heat exchange assembly to form a heat exchange air duct.

[0011] In some embodiments, the battery device further includes a fan disposed in the housing, the fan being configured to allow outside air to pass through the heat exchange duct.

[0012] In some embodiments, the edge of the medium storage box and the edge of the housing form multiple air inlets, each of which is connected to the heat exchange duct. The multiple air inlets are located on different sides of the housing around the perimeter. An air outlet is provided on the side wall of the housing and is connected to the heat exchange duct. The fan is located at the air outlet.

[0013] In some embodiments, the battery device further includes a fire detection module and an electrically controlled valve, the medium storage box has a spray port, the electrically controlled valve is disposed at the spray port, and the fire detection module is electrically connected to the electrically controlled valve.

[0014] Secondly, based on the battery device described above, this application also provides an energy storage station, including the battery device described above.

[0015] In the battery device provided in this application, an energy storage inverter is connected to the battery module, enabling the inverter to control the charging and discharging process of the battery module, thereby ensuring the safe and stable operation of the battery device. A first heat exchange medium in the main pipeline can flow into a first heat exchange pipe and a second heat exchange pipe. The first heat exchange pipe is connected to the battery module for heat exchange, allowing the first heat exchange medium in the first heat exchange pipe to exchange heat with the battery module, enabling the battery module to reach a suitable operating temperature. A second heat exchange medium in the medium storage box flows into the second heat exchange pipe, and the first heat exchange medium in the main pipeline also flows into the first heat exchange pipe. The first and second heat exchange media can mix to form a third heat exchange medium with a temperature between the temperatures of the first and second heat exchange media. This third heat exchange medium can exchange heat with the energy storage inverter. This prevents the temperature of the energy storage inverter from becoming too low, preventing condensation on the surface of the energy storage inverter and improving the safety of the battery device.

[0016] The energy storage station proposed in this application includes the aforementioned battery device, which enables the energy storage station to operate safely and stably. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a battery device provided in an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the housing of the battery device provided in an embodiment of this application.

[0020] Figure 3 This is an axonometric schematic diagram of a battery device provided in an embodiment of this application.

[0021] Figure 4 This is a schematic diagram of the side of the battery device provided in an embodiment of this application.

[0022] Figure 5 This is a schematic diagram of the front of the battery device provided in an embodiment of this application.

[0023] Figure 6 This is a schematic diagram of the spray nozzle of the medium storage box of the battery device provided in the embodiment of this application.

[0024] Figure 7 This is a schematic diagram showing the connection between the fire alarm detection module and the electronically controlled valve of the battery device provided in this embodiment.

[0025] Explanation of reference numerals in the attached figures: 100-Battery Module; 200-Energy Storage Converter; 300 - Circulation pipeline; 310 - Main pipeline; 320 - First heat exchange pipeline; 330 - Second heat exchange pipeline; 340 - First regulating valve; 350 - Second regulating valve; 400 - Media storage box; 410 - Spray nozzle; 420 - Electrically controlled valve; 500 - Heat exchanger assembly; 510 - Compressor; 520 - Plate heat exchanger; 600 - Housing; 610 - Heat exchange air duct; 620 - Air inlet; 630 - Air outlet; 640 - Fan; 700-Fire Alarm Detection Module. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] Energy storage stations (also known as energy storage power stations) are core infrastructure of new power systems. They store electrical energy and release it when needed, solving the problem of mismatch between power supply and demand in time and space, and improving grid stability and the ability to absorb new energy sources. Battery packs and energy storage converters are the main components of an energy storage station. The energy storage converter is the core power conversion device connecting the battery packs to the grid / load, responsible for bidirectional conversion between direct current (DC) and alternating current (AC) and controlling the charging and discharging process of the batteries. To ensure the normal operation of the energy storage station, heat exchange devices are needed to control the temperature of the battery packs and energy storage converters at suitable operating temperatures.

[0028] Currently, heat exchange devices in energy storage stations can be used to exchange heat with battery packs and energy storage inverters to regulate their temperatures. However, the optimal operating temperatures of the battery packs and energy storage inverters differ, and the heat exchange devices cannot ensure that both operate at their ideal temperatures. Specifically, the optimal operating temperature for the battery packs is 20℃-30℃, while the optimal operating temperature for the energy storage inverters is 40℃-50℃. In order to bring the battery packs to their optimal temperature, the heat exchange devices result in a lower temperature for the energy storage inverters, which can easily lead to condensation and create electrical hazards.

[0029] In the battery device proposed in this application, an energy storage inverter is connected to the battery module, enabling the inverter to control the charging and discharging process of the battery module, thereby ensuring the safe and stable operation of the battery device. A first heat exchange medium in the main pipeline can flow into a first heat exchange pipe and a second heat exchange pipe. The first heat exchange pipe is connected to the battery module for heat exchange, allowing the first heat exchange medium in the first heat exchange pipe to exchange heat with the battery module, enabling the battery module to reach a suitable operating temperature. A second heat exchange medium in the medium storage box flows into the second heat exchange pipe, and the first heat exchange medium in the main pipeline also flows into the first heat exchange pipe. The first and second heat exchange media can mix to form a third heat exchange medium with a temperature between the temperatures of the first and second heat exchange media. This third heat exchange medium can exchange heat with the energy storage inverter. This prevents the temperature of the energy storage inverter from becoming too low, preventing condensation on the surface of the energy storage inverter and improving the safety of the battery device.

[0030] The energy storage station proposed in this application includes the aforementioned battery device, which enables the energy storage station to operate safely and stably.

[0031] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] This application provides a battery device, with reference to... Figure 1 and Figure 2 As shown, the device includes a housing 600, a battery module 100, an energy storage converter 200, a dielectric storage box 400, and a circulation pipeline 300. This battery device can be used in energy storage stations.

[0033] The housing 600 is the basic component of the battery device of this application. The housing 600 provides a mounting base for at least some other components of the battery device and serves to protect those components. The housing 600 can be made of metal, giving it better structural strength, thus improving its durability and reliability. Alternatively, at least a portion of the housing 600 can be made of polymer materials, resulting in a relatively lighter weight and better corrosion resistance.

[0034] The housing 600 has an inner cavity, which is an independent hollow structure within the housing 600. The inner cavity can be used to install at least some other components of the battery device of this application.

[0035] Both the battery module 100 and the energy storage converter 200 are housed inside the enclosure 600. The battery module 100 is electrically connected to the energy storage converter 200, which is the core power conversion device that connects the battery module to the power grid / load. It is responsible for realizing bidirectional conversion between direct current (DC) and alternating current (AC) and controlling the charging and discharging process of the battery module 100.

[0036] The circulation pipe 300 can also be installed inside the housing 600, so that the circulation pipe 300 can be fixedly installed in the housing 600. The circulation pipe 300 can supply the first heat exchange medium to flow through, and the first heat exchange medium can circulate within the circulation pipe 300.

[0037] The circulation pipeline 300 includes a main pipeline 310, a first heat exchange pipeline 320 and a second heat exchange pipeline 330. The first heat exchange pipeline 320 and the second heat exchange pipeline 330 are arranged in parallel, and both the first heat exchange pipeline 320 and the second heat exchange pipeline 330 are connected in series with the main pipeline 310.

[0038] Specifically, the first end of the main pipeline 310 can be connected to the first end of the first heat exchange pipeline 320 and the first end of the second heat exchange pipeline 330, respectively, so that the first heat exchange medium in the main pipeline 310 can be diverted to the first heat exchange pipeline 320 and the second heat exchange pipeline 330. The second ends of the first heat exchange pipeline 320 and the second heat exchange pipeline 330 are both connected to the second end of the main pipeline 310, so that the first heat exchange medium flowing through the first heat exchange pipeline 320 and the first heat exchange medium flowing through the second heat exchange pipeline 330 can both flow back to the main pipeline 310. Thus, the first heat exchange medium in the main pipeline 310 can simultaneously flow through the first heat exchange pipeline 320 and the second heat exchange pipeline 330, and then flow back to the main pipeline 310 from the first heat exchange pipeline 320 and the second heat exchange pipeline 330, allowing the first heat exchange medium to circulate within the circulation pipeline 300.

[0039] The first heat exchange pipe 320 is heat-exchange connected to the battery module 100, allowing the first heat exchange medium flowing through the first heat exchange pipe 320 to exchange heat with the battery module 100. When the temperature of the first heat exchange medium is lower than the temperature of the battery module 100, the first heat exchange medium can transfer heat to the battery module 100, thereby increasing the temperature of the battery module 100. When the temperature of the first heat exchange medium is higher than the temperature of the battery module 100, the first heat exchange medium can absorb heat from the battery module 100, thereby decreasing the temperature of the battery module 100.

[0040] The second heat exchange pipe 330 is connected to the energy storage converter 200 for heat exchange, allowing the first heat exchange medium flowing through the second heat exchange pipe 330 to exchange heat with the energy storage converter 200. When the temperature of the first heat exchange medium is lower than the temperature of the energy storage converter 200, the first heat exchange medium can transfer heat to the energy storage converter 200, thereby increasing the temperature of the energy storage converter 200. When the temperature of the first heat exchange medium is higher than the temperature of the energy storage converter 200, the first heat exchange medium can absorb heat from the energy storage converter 200, thereby decreasing the temperature of the energy storage converter 200. Furthermore, the circulation pipeline 300 can also be connected to an external inlet pipeline, which is configured to supply the first heat exchange medium into the circulation pipeline 300. Specifically, one end of the inlet pipeline can be connected to the main pipeline 310, and the other end can be connected to an external device for storing the first heat exchange medium. The circulation pipeline 300 is also connected to an external drain pipeline, which is configured to discharge the first heat exchange medium from the circulation pipeline 300. Specifically, one end of the drain pipeline can be connected to the main pipeline 310, and the other end can be connected to an external collection device. Thus, when the heat exchange medium in the circulation pipeline 300 needs to be replaced, the heat exchange medium in the circulation pipeline 300 can be discharged through the drain pipeline, and new heat exchange medium can be replenished into the circulation pipeline 300 through the inlet pipeline. External first heat exchange medium can be supplied to the circulation pipeline 300 through the inlet pipeline to replenish the first heat exchange medium in the circulation pipeline 300.

[0041] The medium storage box 400 has an internal cavity that can accommodate a second heat exchange medium, allowing it to be stored within the medium storage box 400. The medium storage box 400 is connected to the second heat exchange pipeline 330. The first heat exchange medium flowing from the main pipeline 310 to the second heat exchange pipeline 330 can mix with the second heat exchange medium flowing from the medium storage box 400 to the second heat exchange pipeline 330. The temperature of the first heat exchange medium is lower than that of the second heat exchange medium, resulting in a third heat exchange medium with a temperature between the temperatures of the first and second heat exchange media. This ensures that the temperature of the third heat exchange medium flowing through the second heat exchange pipeline 330 is suitable for the temperature of the energy storage converter 200, preventing condensation due to excessively low surface temperature and ensuring stable operation of the energy storage converter 200.

[0042] In this way, the first heat exchange medium in the first heat exchange pipe 320 can fully exchange heat with the battery module 100, keeping the battery module 100 at a suitable operating temperature. The third heat exchange medium in the second heat exchange pipe 330 can fully exchange heat with the energy storage converter 200, keeping the energy storage converter 200 at a suitable operating temperature. Therefore, the battery device of this application can operate safely and reliably.

[0043] The heat exchange assembly 500 is connected to the main pipeline 310 for heat exchange. The first heat exchange medium, after exchanging heat with the battery module 100, can flow back to the main pipeline 310. Similarly, the third heat exchange medium, after exchanging heat with the energy storage converter 200, can flow back to the main pipeline 310. The heat exchange assembly 500 can exchange heat with the heat exchange medium flowing back to the main pipeline 310, thereby lowering the temperature of the heat exchange medium. This allows the main pipeline 310 to supply the first heat exchange medium again to the first heat exchange pipeline 320 and the second heat exchange pipeline 330. This ensures that the battery device of this application remains stable and reliable during operation.

[0044] In some implementations, reference Figure 1 As shown, in order to allow the first heat exchange medium to circulate within the circulation pipeline 300, the battery device of this application may also include a drive pump, which is located in the main pipeline 310 and configured to drive the first heat exchange medium to circulate within the circulation pipeline 300.

[0045] Specifically, the drive pump can drive the first heat exchange medium to flow from the main pipeline 310 to the first heat exchange pipeline 320 and the second heat exchange pipeline 330 respectively, and drive the first heat exchange medium to flow back from the first heat exchange pipeline 320 and the second heat exchange pipeline 330 to the main pipeline 310, so that the first heat exchange medium can circulate in the circulation pipeline 300.

[0046] By controlling the power of the drive pump, the flow rate of the first heat exchange medium circulating in the circulation pipe 300 can be controlled. Specifically, when the power of the drive pump is set higher, the first heat exchange medium can circulate more efficiently in the circulation pipe 300, resulting in a higher flow rate. When the power of the drive pump is set lower, the flow rate of the first heat exchange medium is lower.

[0047] The number of drive pumps can be set to one or more. When there are multiple drive pumps, some drive pumps can be set in the main pipeline 310, and some drive pumps can be set in the first heat exchange pipeline 320 and the second heat exchange pipeline 330, so that the first heat exchange medium can circulate more efficiently in the circulation pipeline 300.

[0048] In addition, one of the multiple drive pumps can be located between the medium storage box 400 and the second heat exchange pipeline 330, so that the second heat exchange medium in the medium storage box 400 can be efficiently delivered to the medium storage box 400.

[0049] In some implementations, reference Figure 1As shown, in order to control the temperature of the third heat exchange medium after the first heat exchange medium and the second heat exchange medium are mixed, the circulation pipeline 300 of this application may also be provided with a first regulating valve 340. The first regulating valve 340 is disposed in the circulation pipeline 300 and is configured to regulate the flow rate of the first heat exchange medium delivered from the main pipeline 310 to the second heat exchange pipeline 330, or to regulate the flow rate of the second heat exchange medium delivered from the medium storage box 400 to the second heat exchange pipeline 330. This can adjust the mixing ratio of the first heat exchange medium and the second heat exchange medium.

[0050] When the temperature of the energy storage converter 200 is too high and requires sufficient cooling, the flow rate of the first heat exchange medium to the second heat exchange pipeline 330 can be set to be greater than the flow rate of the second heat exchange medium to the second heat exchange pipeline 330. This results in a relatively lower temperature for the third heat exchange medium, allowing it to absorb more heat from the energy storage converter 200. Conversely, when the temperature of the energy storage converter 200 is not too high, the flow rate of the first heat exchange medium to the second heat exchange pipeline 330 can be set to be greater than the flow rate of the second heat exchange medium to the second heat exchange pipeline 330. This also results in a relatively lower temperature for the third heat exchange medium, preventing the temperature of the energy storage converter 200 from becoming too low after heat exchange with the third heat exchange medium.

[0051] In some implementations, reference Figure 1 As shown, the circulation pipeline 300 of this application may further include a second regulating valve 350, wherein the first regulating valve 340 is disposed between the main pipeline 310 and the second heat exchange pipeline 330, and the second regulating valve 350 is disposed between the medium storage box 400 and the second heat exchange pipeline 330. The first regulating valve 340 can control the flow rate of the first heat exchange medium delivered from the main pipeline 310 to the second heat exchange pipeline 330, and the second regulating valve 350 can regulate the flow rate of the second heat exchange medium delivered from the medium storage box 400 to the second heat exchange pipeline 330.

[0052] Specifically, the opening and closing degree of the first regulating valve 340 can be adjusted. When the opening degree of the first regulating valve 340 is larger, the flow rate of the first heat exchange medium delivered to the first heat exchange pipeline 320 is relatively large. When the opening degree of the first regulating valve 340 is smaller, the flow rate of the first heat exchange medium delivered to the first heat exchange pipeline 320 is relatively small.

[0053] The opening and closing degree of the second regulating valve 350 can be adjusted. When the second regulating valve 350 is opened to a larger degree, the flow rate of the second heat exchange medium delivered to the second heat exchange pipeline 330 is relatively large; when the second regulating valve 350 is opened to a smaller degree, the flow rate of the second heat exchange medium delivered to the second heat exchange pipeline 330 is relatively small. This allows for more precise control of the flow ratio of the first and second heat exchange media mixed in the second heat exchange pipeline 330, resulting in more accurate temperature control of the third heat exchange medium.

[0054] In some implementations, reference Figures 2 to 5 As shown, the medium storage box 400 of this application is disposed outside the housing 600, and the medium storage box 400 is also circulatedly connected to the second heat exchange pipeline 330. The second heat exchange medium in the medium storage box 400 is transported to the second heat exchange pipeline 330, and after heat exchange with the energy storage converter 200, at least a portion of the second heat exchange medium after heat exchange can flow back to the medium storage box 400, so that the second heat exchange medium can be fully utilized.

[0055] Specifically, after the energy storage converter 200 exchanges heat with the third heat exchange medium, the third heat exchange medium in the second heat exchange loop can flow back into the medium storage box 400. Since the medium storage box 400 is located outside the housing 600, its surface can directly contact the outside air for heat exchange. Thus, the third heat exchange medium flowing back into the medium storage box 400 can directly exchange heat with the atmosphere, allowing its temperature to decrease and re-form the second heat exchange medium. Correspondingly, this portion of the third heat exchange medium does not need to flow back to the main pipeline 310 to exchange heat with the heat exchange component 500, reducing the energy consumption of the heat exchange component 500 and resulting in lower energy consumption for the battery device of this application.

[0056] In some implementations, reference Figure 2 As shown, the battery module 100, heat exchange assembly 500, and medium storage box 400 of this application are arranged sequentially along the height direction of the housing 600. The medium storage box 400 is located at the top of the housing 600, and there is a gap between the medium storage box 400 and the heat exchange assembly 500 to form a heat exchange air duct 610. (Reference) Figures 3 to 5 As shown, the fan 640 is installed in the heat exchange duct 610. The fan 640 can draw in external cold air into the heat exchange duct 610, allowing the cold air to pass between the medium storage box 400 and the heat exchange component 500. In this way, the heat exchange component 500 and the medium storage box 400 can fully exchange heat with the cold air to dissipate heat.

[0057] Specifically, the heat exchange assembly 500 may include a compressor 510, a condenser, an evaporator, and a plate heat exchanger 520. The principle of the heat exchange assembly 500 is similar to that of an air conditioner, where the refrigerant can circulate between the compressor 510, the condenser, the evaporator, and the plate heat exchanger 520. The main pipeline 310 can be connected to the plate heat exchanger 520, allowing the heat exchange medium returning to the main pipeline 310 to exchange heat with the refrigerant within the plate heat exchanger 520 for cooling.

[0058] It should be understood that the compressor 510 generates heat during operation, and the refrigerant needs to release heat as it flows through the condenser. The cold air passing through the heat exchange duct 610 can exchange heat with the condenser and compressor 510, preventing the compressor 510 from overheating and improving the heat dissipation efficiency of the refrigerant in the condenser. The cold air passing through the heat exchange duct 610 can also exchange heat with the plate heat exchanger 520, allowing the cold air to absorb heat from the refrigerant and heat exchange medium flowing through the plate heat exchanger 520, thereby significantly reducing the energy consumption of the battery device of this application.

[0059] In addition, by placing the media storage box on top of the enclosure 600, the media storage box can also block sunlight and prevent direct sunlight from shining on the components inside the enclosure 600, such as the battery module 100, the energy storage converter 200 and the heat exchange component 500, thus avoiding excessive temperature of the battery module 100, the energy storage converter 200 and the heat exchange component 500.

[0060] In some implementations, reference Figures 3 to 5 As shown, the edge of the media storage box 400 and the edge of the housing 600 form multiple air inlets 620, all of which are connected to air ducts and are located on different sides of the housing 600. An air outlet 630 is provided on the side wall of the housing 600, which is connected to a heat exchange air duct 610. A fan 640 is disposed at the air outlet 630.

[0061] Specifically, the media storage box 400 is mounted on top of the housing 600. There is a gap between the bottom of the media storage box 400 and the top outer wall of the housing 600. Correspondingly, there is also a gap between the bottom edge of the media storage box 400 and the top edge of the housing 600 to form an air inlet 620. The media storage box 400 and the housing 600 can be configured as a near-rectangular body, with the housing 600 having four sides. The air inlet 620 is located on at least two of the four sides of the media storage box 400 and the housing 600. In this embodiment, the air inlet 620 can be located on three connected sides of the media storage box 400 and the housing 600.

[0062] The air outlet 630 is located on the side wall of the housing 600, so that the heat exchange air duct 610 can pass through the interior of the housing 600. In this way, the cold air passing through the heat exchange air duct 610 can exchange heat with the components inside the housing 600, such as heat exchange components, to improve the heat exchange efficiency between the heat exchange components and the cold air.

[0063] In some implementations, reference Figures 6 to 7As shown, the battery device of this application may further include a fire detection module 700 and an electrically controlled valve 420. The medium storage box 400 has a spray port 410, and the electrically controlled valve 420 is disposed at the spray port 410. The fire detection module 700 is electrically connected to the electrically controlled valve 420. The fire detection module 700 can detect whether a fire has occurred in the battery module 100. When a fire occurs in the battery module 100, the electrically controlled valve 420 can control the spray port 410 to open, causing the heat exchange medium in the medium storage box 400 to be sprayed onto the battery module 100 inside the housing 600. The heat exchange medium can be a low-conductivity liquid to prevent the heat exchange medium from contacting the battery module 100 and conducting electricity, thereby effectively extinguishing the fire in the battery module 100.

[0064] The number of spray nozzles 410 can be set to multiple, and the multiple spray nozzles 410 can be distributed in various parts of the medium storage box 400 so that the multiple spray nozzles 410 are directed towards different areas within the box 600. When a thermal runaway fault occurs in different parts of the battery module 100, the spray nozzles 410 in the corresponding areas can be opened by the electronically controlled valve 420, so that the heat exchange medium in the medium storage box 400 can be sprayed to the area of ​​the battery module 100 where thermal runaway has occurred.

[0065] The battery device of this application can operate in different modes under different ambient temperatures, so that the battery module 100 and the energy storage converter 200 can always be at a suitable temperature, so that the battery device can operate stably and reliably.

[0066] 1. When in a high-temperature environment during summer The heat exchange assembly 500 operates at full capacity to provide a first heat exchange medium at a relatively low temperature. The temperature of the second heat exchange medium in the medium storage box 400 is higher than that of the first heat exchange medium. The ratio of the first and second heat exchange mediums is adjusted by the first regulating valve 340 and the second regulating valve 350 so that the temperature of the mixed third heat exchange medium matches the temperature of the energy storage converter 200.

[0067] Furthermore, since the medium storage box 400 is located at the top of the housing 600, when the battery device of this application is exposed to direct sunlight outdoors, the medium storage box 400 can block direct sunlight from reaching the battery module 100 and energy storage inverter 200 inside the housing 600, preventing their temperatures from becoming too high. In addition, the heat exchange medium inside the medium storage box 400 can also absorb heat from direct sunlight, further reducing the temperature of the battery module 100 and energy storage inverter 200. The heat exchange medium inside the medium storage box 400 can be a high specific heat capacity heat exchange medium to improve its heat absorption efficiency.

[0068] II. When the temperature is between spring and autumn The temperature of the energy storage converter 200 will not be too high, and correspondingly, its heat dissipation requirements are relatively low. The power of the heat exchange component 500 can be reduced or turned off, allowing the temperature of the third heat exchange medium to match that of the energy storage converter 200. After absorbing heat from the battery module 100, the first heat exchange medium in the first heat exchange pipeline 320 can flow back to the main pipeline 310. With the fan 640 running, the first heat exchange medium returning to the main pipeline 310 exchanges heat with the outside air through the plate heat exchanger 520 of the heat exchange component 500. This allows the compressor 510 in the heat exchange component 500 to operate at low power or be turned off. When the temperature of the battery module 100 becomes too high, the compressor 510 is restarted or its power is increased.

[0069] In addition, the first heat exchange medium in the first heat exchange pipeline 320 can be configured to absorb the heat of the battery module 100 and then flow back to the main pipeline 310. It can then be sequentially transported to the second heat exchange pipeline 330 and the medium storage box 400 through the main pipeline 310. This makes the temperature of the heat exchange medium in the medium storage box 400 relatively high, which facilitates the mixing of the heat exchange medium in the medium storage box 400 with the heat exchange medium in the second heat exchange pipeline 330 and the heat exchange with the energy storage converter 200. This can make full use of the heat generated during the charging and discharging of the battery module 100 and reduce the energy consumption of the battery device of this application.

[0070] III. When in a low-temperature environment during winter At this time, the battery module 100 needs to be preheated. After the second heat exchange medium in the second heat exchange pipeline 330 absorbs the heat from the energy storage converter 200, the second heat exchange medium flows back to the main pipeline 310. At this time, the fan 640 is turned off, and the second heat exchange medium is transported to the first heat exchange pipeline 320 through the main pipeline 310. Its heat can be conducted to the battery module 100, so that the temperature of the battery module 100 is raised to a suitable operating temperature, thus achieving the purpose of preheating the battery module 100.

[0071] Furthermore, since the medium storage box 400 is circulatedly connected to the second heat exchange pipeline 330, the third heat exchange medium, after absorbing heat from the energy storage converter and raising its temperature, flows back into the medium storage box 400. In this way, the heat exchange medium in the energy storage converter 400, located above the battery module 100, can preheat the battery module 100 from above, resulting in more thorough preheating. Of course, the heat exchange medium in the main pipeline 310, after being heated by the heat exchange assembly 500, can also be transported to the medium storage box 400, allowing the heat exchange medium in the medium storage box 400 to preheat the battery module 100 from above.

[0072] Based on the battery device described above, this application also proposes an energy storage station, including the battery device described above.

[0073] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0074] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0075] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0076] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, characterized in that, include: Battery module (100); An energy storage converter (200) is electrically connected to the battery module (100); The circulation pipeline (300) includes a main pipeline (310), a first heat exchange pipeline (320), and a second heat exchange pipeline (330). The first heat exchange pipeline (320) and the second heat exchange pipeline (330) are connected in parallel, and both the first heat exchange pipeline (320) and the second heat exchange pipeline (330) are connected in series with the main pipeline (310). The first heat exchange pipeline (320) is heat-exchange connected to the battery module (100), and the second heat exchange pipeline (330) is heat-exchange connected to the energy storage converter (200). The main pipeline (310) is configured to deliver a first heat exchange medium to the first heat exchange pipeline (320) and the second heat exchange pipeline (330). A medium storage box (400) is connected to the second heat exchange pipeline (330), and the medium storage box (400) is configured to store a second heat exchange medium, the temperature of which is higher than that of the first heat exchange medium; A heat exchange assembly (500) is connected to the main pipeline (310) and is configured to exchange heat with a heat exchange medium within the main pipeline (310).

2. The battery device according to claim 1, characterized in that, The circulation pipeline (300) further includes a first regulating valve (340), which is configured to regulate the flow rate of the first heat exchange medium delivered from the main pipeline (310) to the first heat exchange pipeline (320), or to regulate the flow rate of the second heat exchange medium delivered from the medium storage box (400) to the second heat exchange pipeline (330).

3. The battery device according to claim 2, characterized in that, The circulation pipeline (300) further includes a second regulating valve (350), the first regulating valve (340) is disposed in the second heat exchange pipeline (330), and the second regulating valve (350) is disposed between the medium storage box (400) and the second heat exchange pipeline (330).

4. The battery device according to claim 1, characterized in that, The medium storage box (400) is circulatedly connected to the second heat exchange pipeline (330).

5. The battery device according to any one of claims 1-4, characterized in that, The battery device also includes a housing (600), the battery module (100) and the energy storage converter (200) are both disposed in the housing (600), and the medium storage box (400) is disposed in the housing (600).

6. The battery device according to claim 5, characterized in that, The battery module (100), the heat exchange assembly (500) and the medium storage box (400) are arranged sequentially along the height direction of the housing (600). The medium storage box (400) is located at the top of the housing (600). There is a gap between the medium storage box (400) and the heat exchange assembly (500) to form a heat exchange air duct (610).

7. The battery device according to claim 6, characterized in that, The battery device also includes a fan (640) disposed in the housing (600) and configured to allow outside air to pass through the heat exchange duct (610).

8. The battery device according to claim 7, characterized in that, The edge of the medium storage box (400) and the edge of the box body (600) form a plurality of air inlets (620), and the plurality of air inlets (620) are all connected to the heat exchange air duct (610). The plurality of air inlets (620) are located on different sides of the circumference of the box body (600). An air outlet (630) is provided on the side wall of the box body (600), and the air outlet (630) is connected to the heat exchange air duct (610). The fan (640) is disposed at the air outlet (630).

9. The battery device according to claim 1, characterized in that, The battery device also includes a fire detection module (700) and an electronically controlled valve (420). The medium storage box (400) has a spray port (410). The electronically controlled valve (420) is disposed at the spray port (410). The fire detection module (700) is electrically connected to the electronically controlled valve (420).

10. An energy storage station, characterized in that, Includes the battery device as described in any one of claims 1-9.

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