Energy storage system

Abstract

The utility model relates to an energy storage system. The energy storage system comprises an energy storage cabinet, a battery module and a water cooling machine, the battery module is provided with a water cooling loop; an inlet of the water-cooling machine communicates with an outlet of the water-cooling loop through a first pipeline, and an outlet of the water-cooling machine communicates with an inlet of the water-cooling loop through a second pipeline. By utilizing high specific heat capacity and high thermal conductivity of the cooling medium, heat generated by the battery can be quickly absorbed and transferred, high-temperature operation of the battery module is prevented, performance degradation caused by local overheating is avoided, and the possibility of thermal runaway is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage technology field, concretely relates to a kind of energy storage systems. BACKGROUND

[0002] Energy storage system is composed of several battery modules etc., all battery modules are arranged in energy storage cabinet, when the thermal runaway of certain battery module occurs, the high temperature generated will cause other battery modules also occur chain thermal runaway.

[0003] At present, in order to prevent fire caused by thermal runaway, fire extinguishing system is arranged in energy storage cabinet, and fire spreading is delayed by fire extinguishing system when battery module is on fire. However, when battery module is overheated but not on fire, the performance of battery module is easily affected. When battery module is overheated and fire occurs and is extinguished by fire extinguishing system, the fire extinguishing of fire extinguishing system is after the event, at this time battery module has been damaged, thereby maintenance cost is increased. UTILITY MODEL CONTENT

[0004] Based on the above description, the utility model provides an energy storage system, to solve the problem that the battery module of existing energy storage system exists thermal runaway.

[0005] The technical scheme for solving the above technical problem of the utility model is as follows:

[0006] An energy storage system, comprising:

[0007] Energy storage cabinet;

[0008] Battery module, with water cooling circuit;

[0009] Water cooling machine, the inlet of the water cooling machine is communicated with the outlet of the water cooling circuit through first pipeline, and the outlet of the water cooling machine is communicated with the inlet of the water cooling circuit through second pipeline.

[0010] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0011] Further, including energy conversion unit, the energy storage cabinet has first cabin and second cabin, the battery module and the water cooling machine are all arranged in the first cabin, the energy conversion unit includes converter, the converter is arranged in the second cabin, and the first input end of the converter is electrically connected to the output end of the battery module.

[0012] Further, the partition plate between the second cabin and the first cabin is heat insulation material.

[0013] Further, the energy conversion unit includes heat dissipation array, the heat dissipation array is arranged in second cabin, and the heat dissipation array includes a plurality of second heat dissipation fans, and the second heat dissipation fans are towards the converter.

[0014] Further, a high-voltage box is arranged in the second cabin body, a first input end of the high-voltage box is electrically connected to an output end of the battery module, and a first output end of the high-voltage box is electrically connected to a first input end of the converter.

[0015] Further, a charger is arranged in the second cabin body, an output end of the charger is electrically connected to a second input end of the converter, a second output end of the converter is electrically connected to a second input end of the high-voltage box, and a second output end of the high-voltage box is electrically connected to an input end of the battery module.

[0016] Further, at least one first cooling fan is arranged in the second cabin body, and an air outlet of each first cooling fan faces the charger.

[0017] Further, a circuit breaker is arranged, an input end of the circuit breaker is electrically connected to a third output end of the converter, and an output end of the circuit breaker is used for being connected to a power grid. Further, a control unit is arranged, the control unit comprises a fan controller, and first and second output ends of the fan controller are electrically connected to input ends of the first and second cooling fans, respectively.

[0018] Further, the control unit comprises a control board and a driving board, a first input end of the control board is electrically connected to a third output end of the high-voltage box, a first output end of the control board is electrically connected to an input end of the fan controller, an input end of the driving board is electrically connected to a second output end of the control board, and an output end of the driving board is electrically connected to an input end of the converter.

[0019] Compared with the prior art, the technical scheme of the present application has the following beneficial technical effects:

[0020] (1) The high specific heat capacity and high thermal conductivity of the cooling medium can quickly absorb and transfer the heat generated by the battery, prevent the battery module from operating at high temperature, avoid performance degradation caused by local overheating, and reduce the possibility of thermal runaway.

[0021] (2) The partition plate between the second cabin body and the first cabin body is made of heat insulation material, which can further reduce the mutual heat transfer between the battery module and the converter. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a front view of an energy storage system provided in an embodiment of the present application;

[0023] Figure 2 is a rear view of an energy storage system provided in an embodiment of the present application;

[0024] Figure 3 A circuit principle diagram of the energy storage system is provided in the embodiment of the utility model.

[0025] Marked with the figure:

[0026] 10, energy storage cabinet, 11, first cabin, 111, first containing cabin, 112, second containing cabin, 12, second cabin, 121, third containing cabin, 1211, first cooling fan, 122, fourth containing cabin,

[0027] 20, battery module,

[0028] 30, water cooling machine, 31, first pipeline, 32, second pipeline,

[0029] 40, energy conversion unit, 41, converter, 42, second cooling fan,

[0030] 50, high voltage box,

[0031] 60, charger,

[0032] 70, transformer,

[0033] 80, control unit, 81, control board, 82, drive board, 83, fan controller, 84, circuit breaker. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The drawings show embodiments of the present application. However, the present application can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0036] It will be understood that the spatially relative terms "beneath", "below", "lower", "under", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can also be oriented in the other directions (for example, rotated 90 degrees or at other orientations) and the spatial description terminology will be interpreted relative to the device in those orientations as well.

[0037] As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and / or "comprising", or "includes" and / or "including" when used herein, specify the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

[0038] Referring to Figures 1-2 As shown, the utility model provides a technical scheme: a kind of energy storage system, including energy storage cabinet 10, battery module 20 and water cooling machine 30;Battery module 20 has water cooling circuit;The inlet of water cooling machine 30 is communicated with the outlet of water cooling circuit by first pipeline 31, and the outlet of water cooling machine 30 is communicated with the inlet of water cooling circuit by second pipeline 32.

[0039] In this embodiment, when the system is running, water cooling machine 30 delivers water cooling medium to water cooling circuit, and flows in water cooling circuit, so that water cooling medium absorbs the heat of battery module 20. Finally, water cooling medium returns to water cooling machine 30, and after water cooling machine 30 cools water cooling medium, it is delivered to water cooling circuit again, to form a circulating loop. Thus, by using the high specific heat capacity and high thermal conductivity of the cooling medium, the heat generated by the battery can be quickly absorbed and transferred, preventing the battery module 20 from running at high temperature and avoiding performance degradation caused by local overheating.

[0040] It should be noted that the cooling medium can be water or coolant, etc.

[0041] Referring to Figures 1-2As shown, in some embodiments, the energy storage system includes the energy conversion unit 40, the energy storage cabinet 10 has the first cabin 11 and the second cabin 12, the battery module 20 and the water-cooled machine 30 are arranged in the first cabin 11, the energy conversion unit 40 includes the converter 41, the converter 41 is arranged in the second cabin 12, and a first input end of the converter 41 is electrically connected to an output end of the battery module 20.

[0042] In this embodiment, the battery module 20 and the converter 41 are isolated by arranging the first cabin 11 and the second cabin 12, the heat of the battery module 20 and the converter 41 can be effectively isolated from each other, and the reliability of heat dissipation of the first cabin 11 and the second cabin 12 is improved. The converter 41 plays a role of AC-DC power conversion, so that the battery module 20 can realize normal charging and discharging.

[0043] In some embodiments, the partition plate between the second cabin 12 and the first cabin 11 is a heat insulation material.

[0044] For example, the heat insulation material can be heat insulation cotton and the like.

[0045] In this embodiment, the heat insulation material can further reduce the mutual heat transfer between the battery module 20 and the converter 41.

[0046] Referring to Figures 1-2 As shown, in some embodiments, the first cabin 11 can include the first containing cabin 111 and the second containing cabin 112, and the second cabin 12 can include the third containing cabin 121 and the fourth containing cabin 122.

[0047] For example, the water-cooled machine 30 can be arranged in the first containing cabin 111, the battery module 20 can be arranged in the second containing cabin 112, and the converter 41 can be arranged in the fourth containing cabin 122.

[0048] Referring to Figures 1-3 As shown, in some embodiments, the energy conversion unit 40 includes a heat dissipation array, the heat dissipation array is arranged in the second cabin 12, and the heat dissipation array includes a plurality of second heat dissipation fans 42, and the second heat dissipation fans 42 are directed towards the converter 41.

[0049] For example, the heat dissipation array can be arranged in the fourth containing cabin 122.

[0050] In this embodiment, the battery module 20, the water-cooled machine 30 and the converter 41 are isolated by the containing cabins, which not only can improve the space utilization of the energy storage cabinet 10, but also can ensure the reliability of system heat dissipation by adopting the water cooling for the battery module 20 and the air cooling for the converter 41.

[0051] Referring to Figures 1-3As shown, in some embodiments, the energy storage system comprises a high-voltage box 50, which is arranged in the second cabin 12, a first input end of the high-voltage box 50 is electrically connected to an output end of the battery module 20, and a first output end of the high-voltage box 50 is electrically connected to a first input end of the converter 41.

[0052] In this embodiment, the battery module 20 is generally composed of a plurality of energy storage batteries, and the high-voltage box 50 converges the voltages of all the energy storage batteries to a unified interface to supply power to the converter 41.

[0053] Referring to Figures 2-3 As shown, in some embodiments, the energy storage system comprises a charger 60, which is arranged in the second cabin 12, an output end of the charger 60 is electrically connected to a second input end of the converter 41, a second output end of the converter 41 is electrically connected to a second input end of the high-voltage box 50, and a second output end of the high-voltage box 50 is electrically connected to an input end of the battery module 20.

[0054] In this embodiment, when charging the battery module 20, after receiving the input alternating current, the charger 60 delivers the alternating current to the converter 41, so that the converter 41 converts the alternating current into direct current to meet the charging requirements of the battery module 20.

[0055] Referring to Figure 1 As shown, in some embodiments, at least one first cooling fan 1211 is arranged in the second cabin 12, and an air outlet of each first cooling fan 1211 faces the charger 60.

[0056] For example, the charger 60 can be arranged in the third accommodating cabin 121.

[0057] In this embodiment, the first cooling fan 1211 cools the charger 60 to avoid high-temperature operation of the charger 60.

[0058] Referring to Figure 1 and 3 As shown, in some embodiments, the energy storage system comprises a circuit breaker 70, an input end of the circuit breaker 70 is electrically connected to a third output end of the converter 41, and an output end of the circuit breaker 70 is used to access the power grid.

[0059] In this embodiment, when the converter 41 converts the direct current into alternating current and delivers it to the power grid, the circuit breaker 70 can play a protection role to ensure the safe delivery of the converter 41 to the power grid.

[0060] Referring to Figure 1 and 3As shown in the drawings, in some embodiments, the energy storage system comprises a control unit 80, the control unit 80 comprises a fan controller 83, and the first output end and the second output end of the fan controller 83 are electrically connected to the input end of the first cooling fan 1211 and the input end of the second cooling fan 42, respectively.

[0061] For example, the fan controller 83 can be arranged in the fourth accommodating cabin 122.

[0062] In this embodiment, the fan controller 83 is mainly used to control the opening and closing of the first cooling fan 1211 and the second cooling fan 42, so as to realize the automatic operation of the first cooling fan 1211 and the second cooling fan 42.

[0063] Referring to Figure 1 and 3 As shown in the drawings, in some embodiments, the control unit 80 comprises a control board 81 and a drive board 82, the first input end of the control board 81 is electrically connected to the third output end of the high-voltage box 50, the first output end of the control board 81 is electrically connected to the input end of the fan controller 83, the input end of the drive board 82 is electrically connected to the second output end of the control board 81, and the output end of the drive board 82 is electrically connected to the input end of the current transformer 41.

[0064] For example, the control board 81 and the drive board 82 can be arranged in the fourth accommodating cabin 122.

[0065] In this embodiment, after the control board 81 obtains the electric energy information of the high-voltage box 50, the corresponding current transformation is performed on the current transformer 41 through the drive board 82 according to the electric energy information, so as to ensure the stability of the output of the current transformer 41.

[0066] Referring to Figure 1 and 3 As shown in the drawings, in some embodiments, the control unit 80 comprises a transformer 84, and the output end of the transformer 84 is electrically connected to the second input end of the control board 81.

[0067] In this embodiment, when the power supply is provided to the control board 81, the voltage of the power supply is converted into the voltage required by the control board 81 through the transformer 84, so as to ensure the stability of the control board 81.

[0068] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage system, characterized by, The energy storage cabinet (10) comprises: a battery module (20) having a water cooling circuit; a water cooling machine (30), an inlet of the water cooling machine (30) being communicated with an outlet of the water cooling circuit through a first pipeline (31), and an outlet of the water cooling machine (30) being communicated with an inlet of the water cooling circuit through a second pipeline (32). The energy storage cabinet (10) comprises an energy conversion unit (40), the energy conversion unit (40) comprises a converter (41), the converter (41) is arranged in the second cabin (12), and a first input end of the converter (41) is electrically connected to an output end of the battery module (20).

2. The energy storage system of claim 1, wherein, The partition plate between the second cabin (12) and the first cabin (11) is made of heat insulation material.

3. The energy storage system of claim 2, wherein, The energy conversion unit (40) comprises a heat dissipation array, the heat dissipation array is arranged in the second cabin (12), the heat dissipation array comprises a plurality of second heat dissipation fans (42), and the second heat dissipation fans (42) are directed towards the converter (41).

4. The energy storage system of claim 2, wherein, The energy storage cabinet (10) comprises a high-voltage box (50), the high-voltage box (50) is arranged in the second cabin (12), a first input end of the high-voltage box (50) is electrically connected to the output end of the battery module (20), and a first output end of the high-voltage box (50) is electrically connected to the first input end of the converter (41).

5. The energy storage system of claim 4, wherein, The energy storage cabinet (10) comprises a charging machine (60), the charging machine (60) is arranged in the second cabin (12), an output end of the charging machine (60) is electrically connected to a second input end of the converter (41), a second output end of the converter (41) is electrically connected to a second input end of the high-voltage box (50), and a second output end of the high-voltage box (50) is electrically connected to an input end of the battery module (20).

6. The energy storage system of claim 5, wherein, At least one first heat dissipation fan (1211) is arranged in the second cabin (12), and an air outlet of each first heat dissipation fan (1211) is directed towards the charging machine (60).

7. The energy storage system of claim 6, wherein, The energy storage cabinet (10) comprises a circuit breaker (70), an input end of the circuit breaker (70) is electrically connected to a third output end of the converter (41), and an output end of the circuit breaker (70) is used for being connected to a power grid.

8. The energy storage system of claim 6, wherein, The energy storage cabinet (10) comprises a control unit (80), the control unit (80) comprises a fan controller (83), and first and second output ends of the fan controller (83) are electrically connected to input ends of the first heat dissipation fans (1211) and the second heat dissipation fans (42) in one-to-one correspondence.

9. The energy storage system of claim 7, wherein, ​ 10. The energy storage system of claim 9, wherein, The control unit (80) comprises a control board (81) and a drive board (82), a first input end of the control board (81) is electrically connected to the third output end of the high-voltage box (50), a first output end of the control board (81) is electrically connected to an input end of the fan controller (83), an input end of the drive board (82) is electrically connected to a second output end of the control board (81), and an output end of the drive board (82) is electrically connected to an input end of the converter (41).

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