An energy storage system and a power supply system

Abstract

The application provides a kind of energy storage system and power supply system.The energy storage system includes N battery clusters and at least two temperature control systems.Each battery cluster includes a plurality of battery packs, and each battery cluster can independently complete charging and discharging.At least two temperature control systems are used to control the temperature of the above-mentioned N battery clusters.Two different temperature control systems in the at least two temperature control systems are used to control the temperature of two different parts of the plurality of battery clusters.N is an integer greater than or equal to 2.The different temperature control systems in the embodiment are independently set, so that the structure of each independent temperature control system is relatively simple, and it is convenient to replace and maintain.The probability of the entire energy storage system being unable to work can be reduced.When a certain battery cluster needs temperature control, only the temperature control system of the corresponding battery cluster can be controlled to work, which is beneficial to reduce power consumption and energy waste.When a certain temperature control system fails, the number of affected battery clusters is small, and the loss can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply equipment, in particular to a kind of energy storage system and power supply system. BACKGROUND

[0002] Under the background of global development of new energy technology, various energy storage related technologies have been widely applied. With container as energy storage mode has been widely used. Specifically, the above container can be an energy storage system, and a power supply system can include multiple energy storage systems.

[0003] The energy storage system can include one or more battery clusters, each battery cluster including one or more battery packs, and each battery cluster can be connected to a power converter. During the operation of the energy storage system, the battery pack and the power converter will generate heat, and the battery pack will have low efficiency in low temperature environment. Therefore, the energy storage system further includes a temperature control system for controlling the temperature of the battery pack and the power converter. The temperature control system can reliably control the temperature of the battery cluster and the power converter, and plays an important role in the normal operation of the energy storage system. SUMMARY

[0004] The present application provides an energy storage system and a power supply system to independently control the temperature of each part, which is beneficial to improve the heat dissipation efficiency and reduce energy waste and loss.

[0005] In a first aspect, the present application provides an energy storage system, which includes N battery clusters and at least two temperature control systems. Each battery cluster includes a plurality of battery packs, and the plurality of battery packs are connected in series or connected in parallel. Each battery cluster can independently complete charging and discharging. The at least two temperature control systems are used to control the temperature of the N battery clusters, and there are two temperature control systems in the at least two temperature control systems. The two temperature control systems are used to control the temperature of two different parts of the plurality of battery clusters, and N is an integer greater than or equal to 2. In the present embodiment, the different temperature control systems are independently set, so that the structure of each independent temperature control system is relatively simple, and it is convenient to replace and maintain. This scheme can also increase the number of temperature control systems in the energy storage system to reduce the probability that the entire energy storage system cannot work. When a certain battery cluster needs temperature control, only the temperature control system of the corresponding battery cluster needs to be turned on or the heat dissipation capacity needs to be improved, which is beneficial to reduce the power consumption of the entire energy storage system and reduce energy waste. Alternatively, when a certain temperature control system fails, only the normal operation of the corresponding battery cluster is affected, and the number of affected battery clusters is small, which can reduce the loss.

[0006] In a further technical solution, each battery cluster is connected to a power converter. The power converter is electrically connected to the N battery packs of the battery cluster 1 to control the charging and discharging of the entire battery cluster.

[0007] The temperature control system is also used to control the temperature of the power converter connected with the corresponding battery cluster. This scheme is conducive to reducing the number of temperature control systems and reducing the volume of the energy storage system.

[0008] The number of the above-mentioned at least two temperature control systems is N, and the N temperature control systems and the N battery clusters are one-to-one arranged, and each temperature control system is used to control the temperature of the corresponding battery cluster. This scheme can control the temperature condition for each battery cluster, and has higher flexibility.

[0009] In another technical scheme, the above-mentioned at least two temperature control systems include N+1 temperature control systems, wherein N temperature control systems are one-to-one arranged with N battery clusters, and each temperature control system is used to control the temperature of the corresponding battery cluster. The N power converters connected with the N battery clusters one by one are centrally arranged, and another temperature control system is used to control the temperature of the centrally arranged N power converters. The temperature requirements of the battery pack and the power converter are different, so different temperature control systems are used for control, which can be more targeted, and is conducive to energy saving and improving the temperature control effect.

[0010] The above-mentioned at least two temperature control systems include a first temperature control system and a second temperature control system, and the N battery clusters include a first part of battery clusters and a second part of battery clusters. Specifically, the above-mentioned first part of battery clusters can include one or more battery clusters, and the second part of battery clusters can also include one or more battery clusters. The number of battery clusters included in the above-mentioned first part of battery clusters can be the same as or different from the number of battery clusters included in the second part of battery clusters, and the present application does not limit this.

[0011] The energy storage system further comprises a temperature control distribution assembly connected between the first temperature control system and the second temperature control system, so as to control the temperature control areas of the first temperature control system and the second temperature control system. Specifically, when the temperature control distribution assembly is in a first working state, the first temperature control system is used to control the temperature of the first part of battery clusters, and the second temperature control system is used to control the temperature of the second part of battery clusters, and the first temperature control system and the second temperature control system work independently. When the temperature control distribution assembly is in a second working state, the first temperature control system is used to control the temperature of the first part of battery clusters and the second part of battery clusters, and one temperature control system is used to control the temperature of the two parts of battery clusters. When the temperature control distribution assembly is in a third working state, the second temperature control system is used to control the temperature of the first part of battery clusters and the second part of battery clusters, and the other temperature control system is used to control the temperature of the two parts of battery clusters. In this technical solution, even if a temperature control system fails to control the temperature of the corresponding battery cluster, the other temperature control system can be used to compensate for the temperature control demand of the battery cluster to ensure the normal work of the battery cluster and the reliability of the energy storage system charging and discharging, so as to reduce the loss caused by shutdown.

[0012] In an optional technical solution, the temperature control system can be a liquid cooling system or an air cooling system. In summary, the temperature control system can control the temperature.

[0013] In a specific technical solution, the energy storage system comprises a cabinet, and the N battery clusters are arranged in the cabinet. The cabinet comprises a door plate and a fixed wall, and the door plate is rotatably installed on the fixed wall. The at least two temperature control systems are arranged on the inner side of the door plate, so that the temperature control systems can move with the rotation of the door plate, and when the temperature control systems need to be maintained, the door plate can be opened for operation, which is beneficial to simplify the operation steps.

[0014] In another specific technical solution, a rotating support is arranged in the cabinet, and the at least two temperature control systems are arranged on the rotating support. Specifically, the rotating support can be installed near the door of the energy storage system, and when the door of the energy storage system is opened, the rotating support can be rotated from the door to the outside of the energy storage system, which is also convenient for maintaining the temperature control systems.

[0015] The energy storage system can further comprise a controller connected with all the power converters and all the temperature control systems, used to control the power converters and the temperature control systems. In this solution, one controller can realize the control of the entire energy storage system, which is beneficial to coordinate and cooperate, and reduces the number of controllers.

[0016] In a second aspect, the application further provides a power supply system, which comprises a power distribution device and at least one energy storage system provided in the first aspect. The power distribution device is electrically connected with the energy storage system and is electrically connected with a user, and is used for distributing the electricity in the energy storage system to the user after processing. In this embodiment, the energy storage system in the power supply system uses different temperature control systems to dissipate heat for different battery clusters, which is conducive to reducing the power consumption of the temperature control system and reducing energy waste. When a temperature control system fails, only the normal work of the corresponding battery cluster is affected, and the number of affected battery clusters is small, which can reduce the loss.

[0017] In specific technical solutions, the specific form of the power supply system is not limited. For example, the power supply system can be a large power station. Or a micro power station, which can be located in an industrial park or a community. Or the power supply system can also be a household power supply system or a power supply system for a vehicle and the like. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structural diagram of an energy storage system;

[0019] Figure 2 A structural diagram of an energy storage system in an embodiment of the application;

[0020] Figure 3 Another structural diagram of an energy storage system in an embodiment of the application;

[0021] Figure 4 Another structural diagram of an energy storage system in an embodiment of the application;

[0022] Figure 5 Another structural diagram of an energy storage system in an embodiment of the application.

[0023] Reference signs:

[0024] 1 - battery cluster; 11 - battery pack;

[0025] 12 - first part battery cluster; 13 - second part battery cluster;

[0026] 2 - power converter; 3 - temperature control system;

[0027] 31 - first temperature control system; 311 - first driving device;

[0028] 32 - second temperature control system; 321 - second driving device;

[0029] 33 - liquid pipeline; 331 - first liquid branch;

[0030] 332 - second liquid branch; 333 - first liquid pipeline;

[0031] 334 - second liquid pipeline; 34 - driving device;

[0032] 341 - first liquid inlet; 342 - first liquid outlet;

[0033] 343 - second liquid inlet; 344 - second liquid outlet;

[0034] 4 - temperature control distribution assembly; 5 - box body;

[0035] 51 - door plate; 52 - fixed wall. DETAILED DESCRIPTION

[0036] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0037] The terms used in the following examples are for the purpose of describing particular embodiments only and are not intended to be limiting of the present application. As used in this specification and the appended claims, the singular forms "a," "an" and "the" include plural referents unless the content clearly dictates otherwise. Throughout this application, the term "about" when used before a

[0038] Reference in this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment.

[0039] In order to facilitate the understanding of the energy storage system and power supply system provided by the embodiments of the present application, the application scenarios thereof will be introduced first as follows.

[0040] With the rapid development of energy storage devices, the range of application of energy storage systems is also becoming more and more extensive. The energy storage system is a highly integrated energy storage device, which includes a plurality of battery clusters, and each battery cluster includes a plurality of battery packs. The above-mentioned battery cluster is connected with external devices through a small number of interfaces, has the characteristics of high integration, small floor area and good expansibility, and is an important component of distributed energy, smart grid and energy internet development in the power supply system. When the energy storage system is working, it is important to ensure that the battery packs work in a suitable temperature environment, which is of great significance to improve the working efficiency of the battery packs.

[0041] Figure 1 A structural schematic diagram of an energy storage system is shown in FIG. 1, which includes N battery clusters 1, wherein N is an integer greater than or equal to 2. Figure 1 The energy storage system includes a plurality of battery clusters 1, and each battery cluster 1 includes a plurality of battery packs 2. The battery cluster 1 is connected with external devices through a small number of interfaces, has the characteristics of high integration, small floor area and good expansibility, and is an important component of distributed energy, smart grid and energy internet development in the power supply system.Figure 1 Only two battery clusters 1 are shown in the figure. Each battery cluster 1 includes a plurality of battery packs 11. In a specific technical solution, the energy storage system can further include a power converter 2, which is connected to the battery packs 11 of the battery cluster 1 to control the charging and discharging of the battery packs 11 and adjust the power, etc. The battery cluster 1 can work independently and independently complete the unit of charging and discharging function.

[0042] As shown in Figure 1 In the prior art, the energy storage system includes a temperature control system 3 for controlling the temperature of each battery cluster 1 and the power converter 2, that is, using a set of temperature control system 3 to control the temperature of all battery clusters 1 and power converters 2 of the entire energy storage system. In this solution, when the temperature control system 3 fails, the entire energy storage system loses the temperature control ability, and the entire energy storage system cannot work normally. When one or part of the N battery clusters 1 fails, the temperature control system 3 will continue to control the temperature of the failed battery cluster 1 and continue to work, which will cause waste of energy. In addition, the temperature control system 3 in this solution is relatively complex, and the installation and maintenance work is also more difficult.

[0043] Figure 2 FIG. 1 is a structural schematic diagram of an energy storage system in an embodiment of the present application, Figure 3 FIG. 2 is another structural schematic diagram of an energy storage system in an embodiment of the present application. As shown in Figure 2 and Figure 3As shown, the energy storage system provided in the present application includes N battery clusters 1 and at least two temperature control systems 3. In the figure, the energy storage system includes two battery clusters 1 and two temperature control systems 3, but in actual application, the energy storage system can include a larger number of battery clusters 1 and temperature control systems 3. That is, the above-mentioned N is an integer greater than or equal to 2. Each battery cluster 1 includes N battery packs 11, which are connected in series or in parallel to realize the functions of charging and discharging. The at least two temperature control systems 3 are used to control the temperature of the N battery clusters 1. Specifically, the at least two temperature control systems 3 include two temperature control systems 3, each of which is used to control the temperature of part of the battery clusters 1, and specifically, the two temperature control systems 3 control the temperature of different parts of the battery clusters 1. In the embodiment, the different temperature control systems 3 are independently arranged, so that the structure of each independent temperature control system 3 is relatively simple, facilitating replacement and maintenance. This scheme can also increase the number of temperature control systems 3 in the energy storage system to reduce the probability that the entire energy storage system cannot work. When a certain battery cluster 1 needs to be temperature controlled, the temperature control system 3 of the corresponding battery cluster 1 can be controlled to be turned on or the heat dissipation capacity can be improved, which is beneficial to reduce the power consumption of the entire energy storage system and reduce energy waste. Alternatively, when a certain temperature control system 3 fails, only the normal work of the corresponding battery cluster 1 is affected, and the number of affected battery clusters 1 is small, which can reduce the loss.

[0044] In specific embodiments, one temperature control system 3 can be used to control the temperature of one battery cluster 1, that is, the energy storage system includes N temperature control systems 3, and the N temperature control systems 3 are arranged one by one with the N battery clusters 1. This scheme can control the temperature of each battery cluster 1, for example, when a certain battery cluster 1 generates a high amount of heat, only the temperature control system 3 of the corresponding battery cluster 1 can be controlled to be turned on or the heat dissipation capacity can be improved, or when a certain battery cluster 1 needs to improve the temperature in a low-temperature environment, the temperature control system of the corresponding battery cluster 1 can be controlled to start, which is beneficial to further reduce the power consumption of the temperature control system 3 and reduce energy waste. Alternatively, when a certain temperature control system 3 fails, only the normal work of the corresponding battery cluster 1 is affected, which can better reduce the loss.

[0045] In other embodiments, one temperature control system 3 can also be used to control the temperature of two or more battery clusters 1, which is not limited in the present application.

[0046] Please continue to refer to Figure 2 The energy storage system in the embodiment of the present application also includes a power converter 2. Specifically, the energy storage system includes N power converters 2, and each battery cluster 1 is connected with a power converter 2, which is electrically connected with the N battery packs 11 of the battery cluster 1 to control the charging and discharging of the entire battery cluster 1.

[0047] In addition to controlling the temperature of the battery cluster 1, the temperature control system 3 is also used to control the temperature of the power converter 2 connected to the corresponding battery cluster 1, thereby facilitating the reduction of the number of temperature control systems 3.

[0048] Figure 4 For another structure of the energy storage system in the embodiment of the present application, as shown in FIG. 6, in another technical solution, the N power converters 2 connected to the N battery clusters 1 in the energy storage system can be centrally arranged. The energy storage system can include N+1 temperature control systems 3, wherein N temperature control systems 3 are used to control the temperature of the N battery clusters 1, and another temperature control system 3 is used to control the temperature of the N power converters 2 centrally arranged. Figure 4 The battery pack 11 and the power converter 2 have different heat generation amounts, and thus have different heat dissipation requirements. In addition, the battery pack 11 needs to be heated when it is started in a low-temperature environment. Therefore, the temperature of the battery pack 11 and the power converter 2 can be controlled respectively.

[0049] In addition, the power converter 2 has a small size, and thus the N power converters 2 in the energy storage system can be centrally arranged. Of course, all the N power converters 2 in the energy storage system can be centrally arranged, or part of the N power converters 2 can be centrally arranged, for example, the N power converters 2 are divided into two groups, and the power converters 2 in each group are centrally arranged, and the power converters 2 in each group are controlled by one temperature control system 3, that is, the energy storage system can include more temperature control systems 3 than N+1.

[0050] In another embodiment, when the temperature control system 3 is not one-to-one corresponding to the battery cluster 1, the N power converters 2 can also be centrally arranged, and the temperature of the power converter 2 is controlled by a separate temperature control system 3. In summary, in the embodiment of the present application, the battery cluster 1 and the power converter 2 can be controlled by different temperature control systems 3.

[0051] Figure 5 For another structure of the energy storage system in the embodiment of the present application, as shown in FIG. 6, in another technical solution, the N power converters 2 connected to the N battery clusters 1 in the energy storage system can be centrally arranged. The energy storage system can include N+1 temperature control systems 3, wherein N temperature control systems 3 are used to control the temperature of the N battery clusters 1, and another temperature control system 3 is used to control the temperature of the N power converters 2 centrally arranged. Figure 5As shown, in a specific embodiment, the N battery clusters 1 in the energy storage system include a first portion of battery clusters 12 and a second portion of battery clusters 13, and the at least two temperature control systems 3 include a first temperature control system 31 and a second temperature control system 32. The energy storage system further includes a temperature control distribution assembly 4 connected between the first temperature control system 31 and the second temperature control system 32, for controlling the working states of the first temperature control system 31 and the second temperature control system 32. When the temperature control distribution assembly 4 is in a first working state, the first temperature control system 31 is used to control the temperature of the first portion of battery clusters 12, and the second temperature control system 32 is used to control the temperature of the second portion of battery clusters 13; that is, the first temperature control system 31 and the second temperature control system 32 control the temperatures of the first portion of battery clusters 12 and the second portion of battery clusters 13, respectively. When the temperature control distribution assembly 4 is in a second working state, the first temperature control system 31 is used to control the temperatures of the first portion of battery clusters 12 and the second portion of battery clusters 13; that is, the temperature of the two portions of battery clusters, i.e., the first portion of battery clusters 12 and the second portion of battery clusters 13, can be controlled by using one first temperature control system 31. When the temperature control distribution assembly 4 is in a third working state, the second temperature control system 32 is used to control the temperatures of the first portion of battery clusters 12 and the second portion of battery clusters 13; that is, the temperature of the two portions of battery clusters, i.e., the first portion of battery clusters 12 and the second portion of battery clusters 13, can be controlled by using one second temperature control system 32.

[0052] The embodiment can make the temperature control system of the energy storage system form various working modes. For example, when the temperature control distribution assembly 4 is in a first working state, the first temperature control system 31 and the second temperature control system 32 work independently, specifically, the first temperature control system 31 is used for heat dissipation of the first part of battery clusters 12, and the second temperature control system 32 is used for heat dissipation of the second part of battery clusters 13. When the temperature control distribution assembly 4 is in a second working state, one first temperature control system 31 can be used to control the temperature of the battery clusters in the first part of battery clusters 12 and the second part of battery clusters 13. For example, when the second temperature control system 32 fails, the second temperature control system 32 cannot control the temperature of the second part of battery clusters 13, at this time, the first temperature control system 31 can be used to control the temperature of the first part of battery clusters 12 and the second part of battery clusters 13 at the same time, so as to ensure the normal work of the second part of battery clusters 13. When the temperature control distribution assembly 4 is in a third working state, one second temperature control system 32 can be used to control the temperature of the battery clusters in the first part of battery clusters 12 and the second part of battery clusters 13. For example, when the first temperature control system 31 fails, the first temperature control system 31 cannot control the temperature of the first part of battery clusters 12, at this time, the second temperature control system 32 can be used to control the temperature of the first part of battery clusters 12 and the second part of battery clusters 13 at the same time, so as to ensure the normal work of the first part of battery clusters 12. In the embodiment, even if a certain temperature control system 3 fails to control the temperature of the corresponding battery cluster 1, another temperature control system 3 can be used to compensate for the temperature control demand of the battery cluster 1, so as to ensure the normal work of the battery cluster 1 and the reliability of the energy storage system, and reduce the loss caused by shutdown.

[0053] The liquid pipeline 33 in heat conduction connection with the first part of battery clusters 12 is a first liquid pipeline 333, and the liquid pipeline 33 in heat conduction connection with the second part of battery clusters 13 is a second liquid pipeline 334. The at least two temperature control systems 3 include a first temperature control system 31 and a second temperature control system 32. The energy storage system further includes a temperature control distribution assembly 4 connected between the first temperature control system 31, the second temperature control system 32, the first liquid pipeline 333 and the second liquid pipeline 334. By controlling the temperature control distribution assembly 4, the first temperature control system 31 can be adjusted to communicate with the first liquid pipeline 333, or the second liquid pipeline 334, or both the first liquid pipeline 333 and the second liquid pipeline 334; the second temperature control system 32 can be adjusted to communicate with the first liquid pipeline 333, or the second liquid pipeline 334, or both the first liquid pipeline 333 and the second liquid pipeline 334.

[0054] In specific embodiments, the temperature control system in the embodiments of the present application can be a liquid cooling system or an air cooling system, and the present application does not limit this. It is worth noting that the main difference between the liquid cooling system and the air cooling system is the heat exchange method. The liquid cooling system uses liquid for heat exchange, and the air cooling system uses gas for heat exchange.

[0055] In the embodiments of the present application, the accompanying drawings take the liquid cooling system as an example. When the temperature control system is a liquid cooling system, the temperature control system further includes a liquid pipeline 33 and a driving device 34. The liquid pipeline 33 is in heat conduction connection with the battery pack 11, and a liquid working medium is transmitted in the liquid pipeline 33. The driving device is used to drive the liquid working medium to flow in the liquid pipeline 33. Therefore, the liquid pipeline 33 can exchange heat with the battery pack 11, so as to heat or cool the battery pack 11.

[0056] In further embodiments, each battery cluster 1 is in heat conduction connection with the liquid pipeline 33. In addition to being in heat conduction connection with the battery pack 11 of the battery cluster 1, the liquid pipeline 33 can also be in heat conduction connection with the power converter 2, so as to control the temperature of the power converter 2 connected with the corresponding battery cluster 1. That is, the temperature control of the battery pack 11 of the battery cluster 1 and the power converter 2 connected therewith can be realized by using a set of temperature control systems 3, which is beneficial to reduce the number of temperature control systems 3.

[0057] Please continue to refer to Figure 3 In an embodiment, the liquid pipeline 33 connected with each battery cluster 1 can include a first liquid branch 331 and a second liquid branch 332. The first liquid branch 331 is in heat conduction connection with the battery pack 11, and the second liquid branch 332 is in heat conduction connection with the power converter 2. The first liquid branch 331 and the second liquid branch 332 are respectively in communication with one driving device 34, that is, one driving device 34 is used to respectively transmit liquid working medium to the first liquid branch 331 and the second liquid branch 332, so as to respectively dissipate heat for the battery pack 11 and the power converter 2. In specific implementation, the driving device 34 can include a first liquid inlet 341, a first liquid outlet 342, a second liquid inlet 343, and a second liquid outlet 344. The first liquid branch 331 is connected between the first liquid inlet 341 and the first liquid outlet 342, and the second liquid branch 332 is connected between the second liquid inlet 343 and the second liquid outlet 344. The first liquid branch 331 can be connected in series with a condenser or a heat sink and the like heat dissipation device, so as to dissipate heat for the battery pack with high heat dissipation demand. The second liquid branch 332 does not need to be connected in series with an additional heat dissipation device, or the heat dissipation device connected in series can have small energy consumption. This scheme is beneficial to reduce the cost and power consumption.

[0058] Please continue to refer to Figure 5In one possible embodiment, the liquid pipe 33 in thermal connection with the first part of battery clusters 12 is a first liquid pipe 333, and the liquid pipe 33 in thermal connection with the second part of battery clusters 13 is a second liquid pipe 334. The first temperature control system 31 comprises a first driving device 311, and the second temperature control system 32 comprises a second driving device 321. The temperature control distribution assembly 4 is connected between the first driving device 311, the second driving device 321, the first liquid pipe 333, and the second liquid pipe 334. By controlling the temperature control distribution assembly 4, the first driving device 311 can be adjusted to be in communication with the first liquid pipe 333, or the second liquid pipe 334, or both the first liquid pipe 333 and the second liquid pipe 334; and the second driving device 321 can be adjusted to be in communication with the first liquid pipe 333, or the second liquid pipe 334, or both the first liquid pipe 333 and the second liquid pipe 334.

[0059] This embodiment can form various working modes of the refrigeration system of the energy storage system. For example, when the temperature control distribution assembly 4 is in a first working state, the first driving device 311 is in communication with the first liquid pipe 333, and the second driving device 321 is in communication with the second liquid pipe 334, that is, the first driving device 311 and the second driving device 321 work independently, and specifically, the first driving device 311 is used to control the temperature of the first part of battery clusters 12, and the second driving device 321 is used to control the temperature of the second part of battery clusters 13. When the temperature control distribution assembly 4 is in a second working state, the first driving device 311 is in communication with the first liquid pipe 333, and also in communication with the second liquid pipe 334. For example, when the second driving device 321 fails, the second driving device 321 cannot control the temperature of the second part of battery clusters 13, at this time, the first driving device 311 can be used to dissipate heat for the first part of battery clusters 12 and the second part of battery clusters 13 at the same time, so as to ensure the normal work of the second part of battery clusters 13. When the temperature control distribution assembly 4 is in a third working state, the second driving device 321 is in communication with the first liquid pipe 333, and also in communication with the second liquid pipe 334. For example, when the first driving device 311 fails, the first driving device 311 cannot control the temperature of the first part of battery clusters 12, at this time, the second driving device 321 can be used to control the temperature of the first part of battery clusters 12 and the second part of battery clusters 13 at the same time, so as to ensure the normal work of the first part of battery clusters 12. In this embodiment, when one temperature control system 3 fails to dissipate heat for the corresponding part of battery clusters 1, another temperature control system 3 can be used to compensate for the heat dissipation of the part of battery clusters 1, so as to ensure the normal work of the part of battery clusters 1, ensure the reliability of the energy storage system charging and discharging, and reduce the loss caused by shutdown.

[0060] In specific embodiments, the temperature control distribution assembly 4 can be a four-way valve or a valve group, and the application does not limit this. As long as the liquid flow channel can be controlled, the above-mentioned purpose can be achieved.

[0061] Please refer to Figure 3 and Figure 4 When the above-mentioned energy storage system is specifically arranged, the battery pack 11 in the N battery clusters 1 and the power converter 2 in the above-mentioned energy storage system can be arranged in the above-mentioned box 5. The temperature control system 3 can also be arranged in the above-mentioned box 5. Specifically, the above-mentioned box 5 can include a door plate 51 and a fixed wall 52, and the door plate 51 can be rotatably installed on the fixed wall 52. The at least two temperature control systems 3 are arranged on the inner side of the door plate 51, so that the temperature control system 3 can move with the rotation of the door plate 51. When the temperature control system 3 needs to be maintained, the door plate 51 can be opened for operation, which is beneficial to simplify the operation steps.

[0062] In another embodiment, a rotating support can also be arranged in the box, and the temperature control system 3 is installed on the rotating support. Specifically, the rotating support can be arranged near the door of the energy storage system, and when the door of the energy storage system is opened, the rotating support can be rotated from the door to the outside of the energy storage system, which can also facilitate the maintenance of the temperature control system 3.

[0063] In a specific technical solution, when the temperature control system in the embodiment of the application is a liquid cooling system, the driving device of the liquid cooling system can include a liquid storage tank, a pump, a heat exchanger, and a pipeline structure. The above-mentioned driving device can be arranged on the door plate or the rotating support.

[0064] The above-mentioned energy storage system can also include a controller connected with the power converter 2 and all the temperature control systems 3, for controlling the power converter 2 and the temperature control systems 3 to work. In this scheme, one controller can realize the control of the entire energy storage system, which is beneficial to coordinate and cooperate, and reduces the number of controllers.

[0065] Based on the same inventive concept, the application also provides a power supply system, which includes the energy storage system in any of the above-mentioned embodiments, and also includes a power distribution device. The power distribution device is electrically connected with the energy storage system, and the power distribution device is also electrically connected with a user, for processing the electricity in the energy storage system and distributing it to the user for use. In this embodiment, the energy storage system in the power supply system uses different temperature control systems to dissipate heat for different battery clusters, which is beneficial to reduce the power consumption of the temperature control system and reduce energy waste. When a temperature control system fails, only the normal work of the corresponding battery cluster is affected, and the number of affected battery clusters is small, which can reduce the loss.

[0066] In specific embodiments, the power supply system is not limited in specific form, for example, the power supply system can be a large power station. Or a micro power station, which can be located in an industrial park or a community. Or the power supply system can also be a household power supply system or a power supply system for a vehicle and the like.

[0067] The above merely provides specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An energy storage system, characterized by, The energy storage system comprises N battery clusters and at least two temperature control systems, wherein: each battery cluster comprises a plurality of battery packs, the at least two temperature control systems are used to control the temperature of the N battery clusters, and there are two temperature control systems in the at least two temperature control systems, the two temperature control systems are respectively used to control the temperature of two different parts of the plurality of battery clusters, and N is an integer greater than or equal to 2; the at least two temperature control systems comprise N+1 temperature control systems, wherein N temperature control systems are in one-to-one correspondence with the N battery clusters, and each temperature control system is used to control the temperature of a corresponding battery cluster; N power converters connected with the N battery clusters are centrally arranged, and another temperature control system is used to control the temperature of the N power converters arranged centrally; the at least two temperature control systems comprise a first temperature control system and a second temperature control system, and the N battery clusters comprise a first part of battery clusters and a second part of battery clusters; the energy storage system further comprises a temperature control distribution assembly connected between the first temperature control system and the second temperature control system, when the temperature control distribution assembly is in a first working state, the first temperature control system is used to control the temperature of the first part of battery clusters, and the second temperature control system is used to control the temperature of the second part of battery clusters; when the temperature control distribution assembly is in a second working state, the first temperature control system is used to control the temperature of the first part of battery clusters and the second part of battery clusters; when the temperature control distribution assembly is in a third working state, the second temperature control system is used to control the temperature of the first part of battery clusters and the second part of battery clusters; a liquid pipeline in heat conduction connection with the first part of battery clusters is a first liquid pipeline, a liquid pipeline in heat conduction connection with the second part of battery clusters is a second liquid pipeline, the first temperature control system comprises a first driving device, the second temperature control system comprises a second driving device, the first temperature control system is connected between the first driving device, the second driving device, the first liquid pipeline and the second liquid pipeline, when the temperature control distribution assembly is in the first working state, the first driving device is in communication with the first liquid pipeline, and the second driving device is in communication with the second liquid pipeline; when the temperature control distribution assembly is in the second working state, the first driving device is in communication with the first liquid pipeline and also in communication with the second liquid pipeline; when the temperature control distribution assembly is in the third working state, the second driving device is in communication with the first liquid pipeline and also in communication with the second liquid pipeline.

2. The energy storage system of claim 1, wherein, Each battery cluster is connected with one power converter.

3. The energy storage system of claim 1, wherein, The number of the at least two temperature control systems is N, N temperature control systems are arranged in one-to-one correspondence with the N battery clusters, and each temperature control system is used to control the temperature of a corresponding battery cluster and also used to control the temperature of a power converter connected with the corresponding battery cluster.

4. An energy storage system as claimed in any one of claims 1 to 3, wherein The temperature control system is a liquid cooling system or an air cooling system.

5. An energy storage system as claimed in any one of claims 1 to 4, wherein The energy storage system comprises a box, the N battery clusters are arranged in the box, and the box comprises a door panel, and the at least two temperature control systems are arranged on the inner side of the door panel.

6. An energy storage system as claimed in any one of claims 1 to 4, wherein The N battery clusters are arranged in the box body, a rotating support is arranged in the box body, and the at least two temperature control systems are arranged in the rotating support.

7. The energy storage system of claim 2, wherein, The controller is further provided with a wireless connection module.

8. A power supply system characterized by comprising: The power distribution equipment is electrically connected with the energy storage system.

Images