Energy storage device

Abstract

The utility model provides energy storage equipment, which comprises an energy storage module and a centralized temperature control system, the energy storage module is provided with a plurality of energy storage containers, and each energy storage container is provided with a plurality of battery modules and at least one high-voltage module; the centralized temperature control system is provided with a first heat exchange pipeline, the energy storage module is connected with the first heat exchange pipeline, the first heat exchange pipeline is communicated with the first heat exchange channel of each battery module, and the first heat exchange pipeline is communicated with the second heat exchange channel of the high-pressure module, so that heat exchange liquid flowing through the first heat exchange channel exchanges heat with the battery modules; and the heat exchange liquid flowing through the second heat exchange channel exchanges heat with the high-pressure module. According to the utility model, the problem that the service life of the high-voltage module is seriously influenced because the high-voltage module works in a high-temperature environment because the high-voltage module cannot be effectively cooled in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrochemical energy storage devices, and more particularly to an energy storage device. Background Art

[0002] In the prior art, several or dozens of energy storage containers form an energy storage module, and each energy storage container has a battery module and a high-voltage module. In the prior art, only the battery module is heat-exchanged, however, the heat generated by the components in the high-voltage module during operation is also very large, and the existing heat dissipation method cannot effectively dissipate the heat of the high-voltage module, resulting in the high-voltage module operating in a relatively high temperature environment, which seriously affects the service life of the high-voltage module. Summary of the Utility Model

[0003] The main object of the utility model is to provide an energy storage device to solve the problem in the prior art that the high-voltage module cannot be effectively cooled, resulting in the high-voltage module operating in a relatively high temperature environment, which seriously affects the service life of the high-voltage module.

[0004] To achieve the above object, the utility model provides an energy storage device, including an energy storage module and a centralized temperature control system. Among them, the energy storage module has a plurality of energy storage containers, and each energy storage container has a plurality of battery modules and at least one high-voltage module; the centralized temperature control system has a first heat exchange pipeline, the energy storage module is connected to the first heat exchange pipeline, and the first heat exchange pipeline is communicated with the first heat exchange channels of each battery module, and the first heat exchange pipeline is also communicated with the second heat exchange channels of the high-voltage modules, so that the heat exchange liquid flowing through the first heat exchange channels exchanges heat with the battery modules, and the heat exchange liquid flowing through the second heat exchange channels exchanges heat with the high-voltage modules.

[0005] Further, the centralized temperature control system further includes a liquid storage tank and a heat exchange module. Among them, the liquid storage tank has a liquid storage cavity and a first liquid outlet, a second liquid outlet, and a liquid return port communicated with the liquid storage cavity. The input end of the first heat exchange pipeline is communicated with the first liquid outlet; the heat exchange module has a heat exchange cavity and a first heat exchange inlet and a first heat exchange outlet communicated with the heat exchange cavity. The first heat exchange outlet is communicated with the liquid return port through a first pipeline; the first heat exchange pipeline includes a liquid supply main pipeline, a liquid return main pipeline, and a plurality of sub-heat exchange pipelines. Among them, the first end of the liquid supply main pipeline is communicated with the first liquid outlet; the first end of the liquid return main pipeline is communicated with the first heat exchange inlet; the plurality of sub-heat exchange pipelines correspond to the plurality of energy storage containers one by one, and each energy storage container is correspondingly connected to each sub-heat exchange pipeline. The input ends of each sub-heat exchange pipeline are all communicated with the second end of the liquid supply main pipeline, and the output ends of each sub-heat exchange pipeline are all communicated with the second end of the liquid return main pipeline; among them, the first heat exchange inlet is selectively communicated with one of the second liquid outlet and the first end of the liquid return main pipeline.

[0006] Further, the centralized temperature control system further includes a three-way valve. The first port of the three-way valve is communicated with the first heat exchange inlet, the second port of the three-way valve is communicated with the first end of the liquid return main path, the third port of the three-way valve is communicated with the second liquid outlet, and the first port is selectively communicated with the second port or the third port.

[0007] Further, a pump body structure is provided on the liquid supply main path; and / or, a pump body structure is provided on the first pipeline.

[0008] Further, the sub-heat exchange pipeline includes a sub-heat exchange input main path, a sub-heat exchange output main path, and a plurality of sub-heat exchange branches. Among them, the first end of the sub-heat exchange input main path forms the input end of the sub-heat exchange pipeline and is communicated with the second end of the liquid supply main path; the first end of the sub-heat exchange output main path forms the output end of the sub-heat exchange pipeline and is communicated with the second end of the liquid return main path; the number of sub-heat exchange branches is equal to the sum of the number of battery modules and the number of high-voltage modules, so that one sub-heat exchange branch corresponds to one battery module or one high-voltage module for connection. The first end of the sub-heat exchange branch is communicated with the second end of the sub-heat exchange input main path, and the second end of the sub-heat exchange branch is communicated with the second end of the sub-heat exchange output main path.

[0009] Further, the energy storage container includes multiple groups of module groups and multiple groups of sub-heat exchange branch groups. Among them, the multiple groups of module groups are arranged at intervals, and each group of module groups includes a plurality of battery modules and at least one high-voltage module; the multiple groups of sub-heat exchange branch groups correspond to the multiple groups of module groups one by one, and each group of sub-heat exchange branch groups includes a plurality of sub-heat exchange branches.

[0010] Further, the energy storage container further includes a first electronic control valve, and the first electronic control valve is arranged on the pipeline where the sub-heat exchange input main path is communicated with a group of sub-heat exchange branch groups.

[0011] Further, the energy storage device further includes a second electronic control valve, and the second electronic control valve is arranged on the sub-heat exchange pipeline.

[0012] Further, the heat exchange module further has a second heat exchange inlet and a second heat exchange outlet communicated with the heat exchange cavity. The energy storage device further includes a heat exchange system, and the heat exchange system includes a water storage tank and an industrial water device. The water storage tank is communicated with the second heat exchange inlet through a second pipeline; the industrial water device is communicated with the second heat exchange outlet through a third pipeline.

[0013] Further, a third electronic control valve is provided on the second pipeline; and / or, a pump body structure is provided on the third pipeline; the energy storage device further includes a power supply line. The first end of the power supply line is selectively electrically connected to the energy storage module and the power user end. The second end of the power supply line has a plurality of branch lines, and at least one of the plurality of branch lines is used for electrically connecting to the pump body structure of the energy storage device, and at least one of the remaining branch lines is used for electrically connecting to the third electronic control valve.

[0014] Applying the technical solution of the present utility model, by connecting the energy storage module to the first heat exchange pipeline, at the same time, the first heat exchange pipeline is communicated with the first heat exchange channels of each battery module, and the first heat exchange pipeline is communicated with the second heat exchange channel of the high-voltage module, so that the heat exchange liquid flowing through the first heat exchange channel exchanges heat with the battery module, and the heat exchange liquid flowing through the second heat exchange channel exchanges heat with the high-voltage module, thereby achieving the purpose of synchronously exchanging heat for the battery module and the high-voltage module. While ensuring the heat exchange reliability of the battery module, it can also ensure the heat exchange reliability of the high-voltage module, so as to ensure that both the battery module and the high-voltage module can operate under the required working environment temperature, prevent the battery module and / or the high-voltage module from being unable to operate normally due to the non-compliance of the operating environment temperature, and ensure the service life of the battery module and the high-voltage module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0016] Figure 1 shows a layout schematic diagram of an energy storage device according to an alternative embodiment of the present utility model;

[0017] Figure 2 shows an internal structure schematic diagram of an energy storage container according to an alternative embodiment of the present utility model.

[0018] Among them, the above-mentioned drawings include the following reference numerals:

[0019] 1. Energy storage module; 100. First pipeline; 200. Pump body structure;

[0020] 10. Energy storage container; 11. Battery module; 12. High-voltage module; 13. Module group; 14. Sub-heat exchange branch group; 15. First electronic control valve; 16. Second electronic control valve;

[0021] 2. Centralized temperature control system;

[0022] 20. First heat exchange pipeline; 210. Liquid supply main pipeline; 220. Liquid return main pipeline; 230. Sub-heat exchange pipeline; 231. Sub-heat exchange input main pipeline; 232. Sub-heat exchange output main pipeline; 233. Sub-heat exchange branch; 21. Liquid storage tank; 211. First liquid outlet; 212. Second liquid outlet; 213. Liquid return port; 22. Heat exchange module; 221. First heat exchange inlet; 222. First heat exchange outlet; 223. Second heat exchange inlet; 224. Second heat exchange outlet; 23. Three-way valve;

[0023] 3. Heat exchange system; 30. Water storage tank; 31. Second pipeline; 32. Industrial water device; 33. Third pipeline; 34. Third electronic control valve;

[0024] 4. Power supply line; 40. Branch line;

[0025] 5. Power user terminal. Detailed implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0027] In order to solve the problem in the prior art that the high-voltage module cannot be effectively cooled, resulting in the high-voltage module operating in a relatively high-temperature environment, which seriously affects the service life of the high-voltage module, the present invention provides an energy storage device.

[0028] As Figure 1 and Figure 2 shown, the energy storage device includes an energy storage module 1 and a centralized temperature control system 2. Among them, the energy storage module 1 has a plurality of energy storage containers 10, and each energy storage container 10 has a plurality of battery modules 11 and at least one high-voltage module 12; the centralized temperature control system 2 has a first heat exchange pipeline 20, the energy storage module 1 is connected to the first heat exchange pipeline 20, and the first heat exchange pipeline 20 is communicated with the first heat exchange channels of each battery module 11, and the first heat exchange pipeline 20 is communicated with the second heat exchange channels of the high-voltage module 12, so that the heat exchange liquid flowing through the first heat exchange channels exchanges heat with the battery modules 11, and the heat exchange liquid flowing through the second heat exchange channels exchanges heat with the high-voltage module 12.

[0029] By connecting the energy storage module 1 to the first heat exchange pipeline 20, at the same time, the first heat exchange pipeline 20 is communicated with the first heat exchange channels of the battery modules 11, and the first heat exchange pipeline 20 is communicated with the second heat exchange channels of the high-voltage module 12, so that the heat exchange liquid flowing through the first heat exchange channels exchanges heat with the battery modules 11, and the heat exchange liquid flowing through the second heat exchange channels exchanges heat with the high-voltage module 12, thereby achieving the purpose of synchronously exchanging heat for the battery modules 11 and the high-voltage module 12. While ensuring the heat exchange reliability of the battery modules 11, it can also ensure the heat exchange reliability of the high-voltage module 12, so as to ensure that both the battery modules 11 and the high-voltage module 12 can operate under the required working environment temperature, prevent the battery modules 11 and / or the high-voltage module 12 from being unable to operate normally due to the non-conformance of the operating environment temperature, and ensure the service life of the battery modules 11 and the high-voltage module 12.

[0030] As Figure 1 shown, the centralized temperature control system 2 further includes a liquid storage tank 21 and a heat exchange module 22. The liquid storage tank 21 has a liquid storage cavity and a first liquid outlet 211, a second liquid outlet 212, and a liquid return port 213 communicated with the liquid storage cavity. The input end of the first heat exchange pipeline 20 is communicated with the first liquid outlet 211; the heat exchange module 22 has a heat exchange cavity and a first heat exchange inlet 221 and a first heat exchange outlet 222 communicated with the heat exchange cavity. The first heat exchange outlet 222 is communicated with the liquid return port 213 through a first pipeline 100; the first heat exchange pipeline 20 includes a liquid supply main road 210, a liquid return main road 220, and a plurality of sub-heat exchange pipelines 230. The first end of the liquid supply main road 210 is communicated with the first liquid outlet 211; the plurality of sub-heat exchange pipelines 230 correspond to a plurality of energy storage containers 10 one by one, and each energy storage container 10 is correspondingly connected to each sub-heat exchange pipeline 230. The input ends of each sub-heat exchange pipeline 230 are all communicated with the second end of the liquid supply main road 210, and the output ends of each sub-heat exchange pipeline 230 are all communicated with the second end of the liquid return main road 220; the first heat exchange inlet 221 is selectively communicated with one of the second liquid outlet 212 and the first end of the liquid return main road 220.

[0031] Furthermore, as Figure 1As shown in the figure, the centralized temperature control system 2 further includes a three-way valve 23. The first port of the three-way valve 23 is communicated with the first heat exchange inlet 221, the second port of the three-way valve 23 is communicated with the first end of the liquid return main path 220, the third port of the three-way valve 23 is communicated with the second liquid outlet 212, and the first port is selectively communicated with the second port or the third port. In this way, when the centralized temperature control system is just started, the third port is communicated with the first port, so that the refrigerant in the liquid storage tank 21 flows into the heat exchange module 22 from the second liquid outlet 212 for heat exchange operation. After the heat exchange operation, the refrigerant (the temperature becomes lower or higher, and it is determined whether to heat or cool according to the specific working environment of the battery module 11 and the high-voltage module 12) flows back into the liquid storage tank 21 through the first pipeline 100 and the liquid return port 213 of the liquid storage tank 21, and then flows into the first heat exchange pipeline 20 from the first liquid outlet 211 of the liquid storage tank 21. When the centralized temperature control system is running normally, the second port is communicated with the first port, so that the refrigerant in the liquid return main path 220 flows into the heat exchange module 22 for heat exchange operation. After the heat exchange operation, the refrigerant flows back into the liquid storage tank 21 through the first pipeline 100 and the liquid return port 213 of the liquid storage tank 21, and then flows into the first heat exchange pipeline 20 from the first liquid outlet 211 of the liquid storage tank 21.

[0032] As Figure 1 shown, a pump body structure 200 is provided on the liquid supply main path 210. And / or, a pump body structure 200 is provided on the first pipeline 100. In this way, the pump body structure 200 on the liquid supply main path 210 plays a role in pumping the refrigerant in the liquid storage tank 21. In addition, the pump body structure 200 on the first pipeline 100 plays a role in pumping the refrigerant after the heat exchange operation.

[0033] Optionally, the pump body structure 200 is a regulating water pump.

[0034] As Figure 2 shown, the sub-heat exchange pipeline 230 includes a sub-heat exchange input main path 231, a sub-heat exchange output main path 232, and a plurality of sub-heat exchange branches 233. The first end of the sub-heat exchange input main path 231 forms the input end of the sub-heat exchange pipeline 230 and is communicated with the second end of the liquid supply main path 210; the first end of the sub-heat exchange output main path 232 forms the output end of the sub-heat exchange pipeline 230 and is communicated with the second end of the liquid return main path 220; the number of the sub-heat exchange branches 233 is equal to the sum of the number of the battery modules 11 and the number of the high-voltage modules 12, so that one sub-heat exchange branch 233 is correspondingly connected to one battery module 11 or one high-voltage module 12. The first end of the sub-heat exchange branch 233 is communicated with the second end of the sub-heat exchange input main path 231, and the second end of the sub-heat exchange branch 233 is communicated with the second end of the sub-heat exchange output main path 232. In this way, it is ensured that the refrigerant can gradually flow into the first heat exchange channels of the respective battery modules 11 and the second heat exchange channels of the high-voltage modules 12.

[0035] As Figure 2 shown, the energy storage container 10 includes multiple groups of module groups 13 and multiple groups of sub-heat exchange branch groups 14. Among them, the multiple groups of module groups 13 are arranged at intervals, and each group of module groups 13 includes multiple battery modules 11 and at least one high-voltage module 12; the multiple groups of sub-heat exchange branch groups 14 correspond to the multiple groups of module groups 13 one by one, and each group of sub-heat exchange branch groups 14 includes multiple sub-heat exchange branches 233. In this way, it is ensured that the multiple groups of module groups 13 in each energy storage container 10 can adjust and control the temperatures of all the battery modules 11 and all the high-voltage modules 12 through the corresponding multiple groups of sub-heat exchange branch groups 14, so as to ensure that all the battery modules 11 and all the high-voltage modules 12 can be effectively temperature-adjusted and ensure that they can operate in a suitable working environment.

[0036] As Figure 2 shown, the energy storage container 10 further includes a first electronic control valve 15, and the first electronic control valve 15 is arranged on the pipeline where the sub-heat exchange input main pipeline 231 communicates with a group of sub-heat exchange branch groups 14. In this way, the first electronic control valve 15 can adjust the flow rate of the refrigerant flowing into the corresponding sub-heat exchange branch group 14, and thus plays a role in adjusting the flow rate of the refrigerant in the first heat exchange channel flowing into each battery module 11, and the first electronic control valve 15 plays a role in adjusting the flow rate of the refrigerant in the second heat exchange channel flowing into each high-voltage module 12.

[0037] As Figure 1 shown, the energy storage device further includes a second electronic control valve 16, and the second electronic control valve 16 is arranged on the sub-heat exchange pipeline 230. In this way, the second electronic control valve 16 plays a role in adjusting the flow rate of the refrigerant flowing into each sub-heat exchange pipeline 230.

[0038] It should be noted that in the present application, the second electronic control valve 16 is located on the sub-heat exchange pipeline 230 including the sub-heat exchange input main pipeline 231.

[0039] As Figure 1As shown in the figure, the heat exchange module 22 further has a second heat exchange inlet 223 and a second heat exchange outlet 224 that communicate with the heat exchange chamber. The energy storage device further includes a heat exchange system 3, and the heat exchange system 3 includes a water storage tank 30 and an industrial water device 32. Among them, the water storage tank 30 is communicated with the second heat exchange inlet 223 through a second pipeline 31; the industrial water device 32 is communicated with the second heat exchange outlet 224 through a third pipeline 33. In this way, by simultaneously introducing a refrigerant and water into the heat exchange chamber of the heat exchange module 22, heat exchange operation is carried out between the refrigerant and the water. Of course, when the battery module 11 and the high-voltage module 12 need to be cooled to ensure being in a normal working environment, the temperature of the water is lower than that of the refrigerant, and heat exchange occurs between the water and the refrigerant, so that the temperature of the refrigerant is reduced, thereby realizing the cooling of the battery module 11 and the high-voltage module 12; when the battery module 11 and the high-voltage module 12 need to be heated to ensure being in a normal working environment, the temperature of the water is higher than that of the refrigerant, and heat exchange occurs between the water and the refrigerant, so that the temperature of the refrigerant is increased, thereby realizing the heating of the battery module 11 and the high-voltage module 12. In addition, the water after the heat exchange operation flows back into the industrial water device 32 through the third pipeline 33 for recycling, avoiding waste of water resources.

[0040] As Figure 1 shown, a third electronic control valve 34 is provided on the second pipeline 31; and / or, a pump body structure 200 is provided on the third pipeline 33. In this way, the third electronic control valve 34 on the second pipeline 31 plays a role in controlling and regulating the water output of the water storage tank 30, and the pump body structure 200 on the third pipeline 33 plays a role in pumping the water after the heat exchange operation.

[0041] As Figure 1 shown, the energy storage device further includes a power supply line 4. The first end of the power supply line 4 is selectively electrically connected to the energy storage module 1 and the power user terminal 5. The second end of the power supply line 4 has a plurality of branch lines 40. At least one of the plurality of branch lines 40 is used for electrically connecting to the pump body structure 200 of the energy storage device, and at least one of the remaining branch lines 40 is used for electrically connecting to the third electronic control valve 34. In this way, the pump body structure 200 and the third electronic control valve 34 in the present application can both be powered by the energy storage module 1, and of course, they can also be powered by the power user terminal 5.

[0042] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] For the sake of convenience of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used here to describe the spatial positional relationship of one device or feature to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations will be made for the spatial relative descriptions used here.

[0045] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification, claims, and above-mentioned drawings of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An energy storage device, characterized in that: include: An energy storage module (1), the energy storage module (1) comprising a plurality of energy storage containers (10), each of the energy storage containers (10) comprising a plurality of battery modules (11) and at least one high-voltage module (12); A centralized temperature control system (2), the centralized temperature control system (2) having a first heat exchange pipeline (20), the energy storage module (1) being connected to the first heat exchange pipeline (20), and the first heat exchange pipeline (20) being in communication with a first heat exchange channel of each of the battery modules (11), and the first heat exchange pipeline (20) being in communication with a second heat exchange channel of the high-voltage module (12), so that a heat exchange liquid flowing through the first heat exchange channel exchanges heat with the battery module (11), and a heat exchange liquid flowing through the second heat exchange channel exchanges heat with the high-voltage module (12); The centralized temperature control system (2) further comprises: A liquid storage tank (21), the liquid storage tank (21) comprising a liquid storage cavity and a first liquid outlet (211), a second liquid outlet (212), and a liquid return port (213) in communication with the liquid storage cavity, the input end of the first heat exchange pipeline (20) being in communication with the first liquid outlet (211); A heat exchange module (22), the heat exchange module (22) comprising a heat exchange cavity and a first heat exchange inlet (221) and a first heat exchange outlet (222) in communication with the heat exchange cavity, the first heat exchange outlet (222) being in communication with the liquid return port (213) via a first pipeline (100); The first heat exchange inlet (221) may be selectively connected to one of the second liquid outlet (212) and the output end of the first heat exchange pipeline (20).

2. The energy storage device according to claim 1, characterized in that: The first heat exchange pipeline (20) comprises: A liquid supply trunk line (210), wherein a first end of the liquid supply trunk line (210) is in communication with the first liquid outlet (211); a liquid return trunk line (220), wherein a first end of the liquid return trunk line (220) is in communication with the first heat exchange inlet (221); a plurality of sub-heat exchange pipelines (230), the plurality of sub-heat exchange pipelines (230) corresponding one-to-one to the plurality of energy storage containers (10), and each of the energy storage containers (10) correspondingly connected to each of the sub-heat exchange pipelines (230), the input end of each of the sub-heat exchange pipelines (230) being in communication with the second end of the liquid supply trunk line (210), and the output end of each of the sub-heat exchange pipelines (230) being in communication with the second end of the liquid return trunk line (220); The first heat exchange inlet (221) may be selectively connected to one of the second liquid outlet (212) and the first end of the liquid return trunk line (220).

3. The energy storage device according to claim 2, characterized in that: The centralized temperature control system (2) further comprises: A three-way valve (23), wherein a first port of the three-way valve (23) is connected to the first heat exchange inlet (221), a second port of the three-way valve (23) is connected to the first end of the liquid return trunk line (220), a third port of the three-way valve (23) is connected to the second liquid outlet (212), and the first port can be selectively connected to the second port or the third port.

4. The energy storage device according to claim 2, characterized in that: The liquid supply trunk line (210) is provided with a pump structure (200); and / or, A pump body structure (200) is provided on the first pipeline (100).

5. The energy storage device according to claim 2, characterized in that: The sub-heat exchange pipeline (230) comprises: a sub-heat exchange input trunk line (231), wherein a first end of the sub-heat exchange input trunk line (231) forms an input end of the sub-heat exchange pipeline (230) and is in communication with a second end of the liquid supply trunk line (210); a sub-heat exchange output trunk line (232), wherein a first end of the sub-heat exchange output trunk line (232) forms an output end of the sub-heat exchange pipeline (230) and is in communication with a second end of the liquid return trunk line (220); A plurality of sub-heat exchange branches (233), wherein the number of the sub-heat exchange branches (233) is equal to the sum of the number of the battery modules (11) and the number of the high-voltage modules (12), so that one sub-heat exchange branch (233) is connected to one battery module (11) or one high-voltage module (12), a first end of the sub-heat exchange branch (233) is connected to the second end of the sub-heat exchange input trunk (231), and a second end of the sub-heat exchange branch (233) is connected to the second end of the sub-heat exchange output trunk (232).

6. The energy storage device according to claim 5, characterized in that: The energy storage container (10) comprises: A plurality of module groups (13), wherein the plurality of module groups (13) are arranged at intervals, and each of the module groups (13) comprises a plurality of battery modules (11) and at least one high-voltage module (12); A plurality of sub-heat exchange branch groups (14), the plurality of sub-heat exchange branch groups (14) corresponding one-to-one to the plurality of module groups (13), each of the sub-heat exchange branch groups (14) comprising a plurality of sub-heat exchange branches (233).

7. The energy storage device according to claim 6, characterized in that: The energy storage container (10) further comprises: A first electronic control valve (15), wherein the first electronic control valve (15) is arranged on a pipeline connecting the sub-heat exchange input trunk line (231) and a group of the sub-heat exchange branch line groups (14).

8. The energy storage device according to claim 5, characterized in that: The energy storage device also includes: A second electronically controlled valve (16), wherein the second electronically controlled valve (16) is arranged on the sub-heat exchange pipeline (230).

9. The energy storage device according to claim 2, characterized in that: The heat exchange module (22) further comprises a second heat exchange inlet (223) and a second heat exchange outlet (224) which are in communication with the heat exchange cavity. The energy storage device further comprises a heat exchange system (3). The heat exchange system (3) comprises: a water storage tank (30), the water storage tank (30) being in communication with the second heat exchange inlet (223) via a second pipeline (31); An industrial water device (32), wherein the industrial water device (32) is connected to the second heat exchange outlet (224) via a third pipeline (33).

10. The energy storage device according to claim 9, characterized in that: The second pipeline (31) is provided with a third electronic control valve (34); and / or, The third pipeline (33) is provided with a pump body structure (200); The energy storage device also includes: A power supply line (4), wherein a first end of the power supply line (4) is selectively electrically connected to the energy storage module (1) and the power user end (5), and a second end of the power supply line (4) has a plurality of branch lines (40), at least one of the plurality of branch lines (40) is used to electrically connect to a pump body structure (200) of the energy storage device, and at least one of the remaining branch lines (40) is used to electrically connect to a third electronic control valve (34).

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