Combined energy storage monomer, energy storage cluster and energy storage device

Abstract

The present invention discloses a combined energy storage monomer, including a monomer shell, wherein a plurality of battery slots are provided in the monomer shell, and all the battery slots are divided into at least one group; at least one energy storage battery is installed in the battery slot, and the energy storage batteries installed in the battery slots belonging to the same group are connected in series or in parallel, and monomer pole ears are provided on the monomer shell corresponding to each group of the battery slots. The present invention also discloses an energy storage cluster, including a cluster bracket, on which a plurality of combined energy storage monomers as described above are installed. The present invention also discloses an energy storage device, including a box, in which a plurality of energy storage clusters as described above are installed. The combined energy storage monomer, energy storage cluster and energy storage device of the present invention can meet the capacity requirements and have the advantages of convenient disassembly, control and maintenance by combining a plurality of smaller energy storage batteries into a larger energy storage monomer.

Description

Technical Field

[0001] The present invention relates to the technical field of electrochemical energy storage, and specifically to a combined energy storage monomer, an energy storage cluster and an energy storage device. Background Art

[0002] Batteries are mainly divided into two categories: power batteries and energy storage batteries. Among them, power batteries are mainly used in electric vehicles, electric bicycles and other electric tools. As a mobile power source, power batteries have as high a volume (and mass) energy density as possible under the premise of safety in order to achieve a longer endurance. At the same time, users also hope that electric vehicles can be charged safely and quickly, so power batteries have higher requirements for energy density and power density.

[0003] Energy storage batteries do not have direct requirements for energy density. As for power density, different energy storage scenarios have different requirements. For power peak regulation, off-grid photovoltaic energy storage, or peak-valley price difference energy storage scenarios on the user side, energy storage batteries are generally required to be continuously charged or discharged for more than two hours, so it is suitable to use capacity batteries with a charge and discharge rate of ≤0.5C; for power frequency regulation or energy storage scenarios that smooth renewable energy fluctuations, energy storage batteries are required to be quickly charged and discharged in seconds to minutes, so it is suitable for the application of ≥2C power batteries.

[0004] The energy storage device will generate a lot of heat during use. In order to ensure the normal use of the energy storage device, the energy storage device needs to be cooled. In the related technology, most energy storage devices on the market adopt an air-cooled heat dissipation structure, which mainly uses a fan combined with an open air duct structure to achieve the function of lowering the temperature of the internal components of the cabinet through internal and external air convection exchange. Although the air-cooled heat dissipation structure can achieve a cooling effect to a certain extent, its cooling efficiency is low. It is particularly low. When the energy storage device is placed in a confined space, the cooling efficiency of the air-cooled heat dissipation structure will further decrease, and the safe operation of the energy storage device cannot be guaranteed.

[0005] In order to store enough electric energy to meet the requirements of the usage scenario, a corresponding number of energy storage batteries need to be installed in the energy storage device. Since the existing energy storage batteries are small in size, when the energy storage device requires a large amount of electricity, that is, when the box volume of the energy storage device is large, the number of energy storage batteries that need to be installed is very large, which leads to great difficulties in the disassembly, control and maintenance of the energy storage batteries. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a combined energy storage cell, energy storage cluster and energy storage device, which can meet the capacity requirements and have the advantages of convenient disassembly, control and maintenance by combining multiple smaller energy storage batteries into a larger energy storage cell.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention first proposes a combined energy storage monomer, including a monomer shell, wherein a plurality of battery slots are arranged in the monomer shell, and all the battery slots are divided into at least one group;

[0009] At least one energy storage battery is installed in the battery slot, and the energy storage batteries installed in the battery slots belonging to the same group are connected in series or in parallel. The single body shell is provided with single pole ears corresponding to each group of the battery slots.

[0010] Furthermore, a first side plate and a second side plate are provided in the single body shell, the first side plate and the second side plate are perpendicular to each other, and the first side plate and the second side plate separate a plurality of the battery slots in the single body shell.

[0011] Furthermore, a side plate temperature control channel for circulating a temperature control medium is provided in the first side plate.

[0012] Furthermore, a plurality of energy storage batteries are stacked in each of the battery slots.

[0013] Furthermore, in the battery slot, an insulating heat-conducting diaphragm is provided between two adjacent energy storage batteries.

[0014] Furthermore, a thermistor is provided on the insulating heat-conductive diaphragm.

[0015] Furthermore, one end of the insulating and heat-conductive diaphragm close to the first side plate is in contact with the first side plate.

[0016] Furthermore, a connecting block is provided in the second side plate, and the battery tabs of the energy storage battery located on both sides of the second side plate are connected to the corresponding connecting blocks.

[0017] Furthermore, the energy storage battery adopts a soft-pack battery.

[0018] Furthermore, two side surfaces of the monomer shell that are perpendicular to the first side plate and the second side plate are monomer surfaces, and at least one of the two monomer surfaces is provided with a surface temperature control system.

[0019] Furthermore, the surface temperature control system includes a surface temperature control channel for the circulation of a temperature control medium.

[0020] Furthermore, the monomer shell includes two first monomer side surfaces parallel to the first side plate and two second monomer side surfaces parallel to the second side plate; an exhaust valve for exhausting air after the air pressure in the monomer shell exceeds a set value is provided on the first monomer side surfaces and / or the second monomer side surfaces.

[0021] Furthermore, the first side plate and / or the second side plate is provided with a vent hole for connecting the battery slot with the exhaust valve.

[0022] Furthermore, a negative pressure pipe is connected to the exhaust valve.

[0023] Furthermore, the exhaust valve is arranged on one of the first monomer side surfaces and / or the second monomer side surfaces, and an anti-thermal runaway medium injection pipe is provided on the other first monomer side surfaces and / or the second monomer side surfaces, and an anti-thermal runaway medium injection valve is provided on the anti-thermal runaway medium injection pipe.

[0024] Furthermore, the single body shell is provided with reinforcing ribs for enhancing the structural strength.

[0025] The present invention further provides an energy storage cluster, comprising a cluster bracket, on which a plurality of combined energy storage monomers as described above are mounted.

[0026] Furthermore, a first side panel and a second side panel are provided in the monomer shell, and the first side panel and the second side panel are perpendicular to each other; two side surfaces of the monomer shell that are perpendicular to the first side panel and the second side panel are monomer surfaces, and at least one of the two monomer surfaces is provided with a surface temperature control system, and the surface temperature control system includes a surface temperature control channel for the circulation of a temperature control medium, and a first medium inlet and a first medium outlet are respectively provided at both ends of the surface temperature control channel, and a first medium injection pipe for introducing a temperature control medium and a first medium return pipe for returning the temperature control medium are provided on the cluster bracket, and the first medium inlet is connected to the first medium injection pipe, and the first medium outlet is connected to the first medium return pipe.

[0027] Furthermore, a first medium flow control valve for controlling the medium flow is provided at the first medium inlet.

[0028] Further, the first medium injection pipe and the first medium return pipe are fixedly installed on the cluster support; or the cluster support includes a column, and the first medium injection pipe and the first medium return pipe are arranged in the column.

[0029] Furthermore, energy storage units are arranged at intervals on the cluster support, and temperature control units are arranged between adjacent energy storage units.

[0030] Furthermore, a monomer temperature control channel for the circulation of temperature control medium is provided in the temperature control monomer, and a second medium inlet and a second medium outlet are provided at both ends of the monomer temperature control channel respectively; a second medium injection pipe for introducing temperature control medium and a second medium return pipe for returning temperature control medium are provided on the cluster bracket, the second medium inlet is connected to the second medium injection pipe, and the second medium outlet is connected to the second medium return pipe.

[0031] Furthermore, a second medium flow control valve for controlling the medium flow is provided at the second medium inlet.

[0032] Furthermore, a temperature control panel is also provided on the cluster bracket.

[0033] Furthermore, the temperature control plate is provided with a plate temperature control channel for the circulation of the temperature control medium.

[0034] Furthermore, a sealed shell is provided on the cluster support, and the sealed shell is filled with nitrogen or an inert gas.

[0035] The present invention further provides an energy storage device, comprising a box, in which a plurality of energy storage clusters as described above are installed.

[0036] Furthermore, the energy storage clusters are arranged at intervals in the box body, a temperature control device is arranged between two adjacent energy storage clusters, and the energy storage clusters are in contact with and cooperate with the adjacent temperature control devices.

[0037] Furthermore, the temperature control device is provided with a device temperature control channel for the circulation of the temperature control medium.

[0038] Furthermore, a box temperature control device is provided on the side wall and / or bottom surface of the box.

[0039] The beneficial effects of the present invention are:

[0040] The combined energy storage cell of the present invention achieves the technical purpose of outputting electric energy to the outside by arranging a plurality of battery slots in the cell shell, installing energy storage batteries in the battery slots, and connecting the energy storage batteries in the same group of battery slots in series or in parallel. That is, the combined energy storage cell of the present invention can combine a plurality of smaller energy storage batteries into a larger energy storage cell to match the box size of the energy storage device. At the same time, each energy storage cell can meet the capacity requirements and has the advantages of convenient disassembly, assembly, control and maintenance.

[0041] By providing a side plate temperature control flow channel in the first side plate, the temperature in each battery slot can be controlled, so that the energy storage battery is kept running within the set temperature range to improve operating safety; by providing an insulating heat-conductive diaphragm between two adjacent energy storage batteries and attaching the insulating heat-conductive diaphragm to the first side plate, the heat exchange between the joint surface of the two energy storage batteries and the first side plate can be accelerated, and the operating temperature of the energy storage battery can be further controlled to prevent the local temperature from exceeding the set operating temperature range.

[0042] By arranging an exhaust valve on the single body shell and arranging vent holes on the first side plate and / or the second side plate to allow gas to circulate between the battery slots, when the gas pressure in the single body shell exceeds the set value, the exhaust valve can be used to exhaust gas, thereby improving safety; by arranging an anti-thermal runaway medium injection pipe on the single body shell, when the energy storage battery encounters extreme situations such as a short circuit, the anti-thermal runaway medium injection pipe can be used to inject the anti-thermal runaway medium into the single body shell, thereby delaying and controlling the electrochemical reaction in the energy storage battery, thereby avoiding combustion and explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0044] Figure 1 It is a structural schematic diagram of an energy storage device embodiment of the present invention;

[0045] Figure 2 Schematic diagram of the structure of the energy storage cluster in this embodiment;

[0046] Figure 3 It is a schematic diagram of the structure of the energy storage monomer;

[0047] Figure 4 is a cross-sectional view of the energy storage unit along a direction parallel to the second side plate;

[0048] Figure 5 for Figure 4 Detailed drawing A;

[0049] Figure 6 is a cross-sectional view of the energy storage unit along a direction parallel to the first side plate;

[0050] Figure 7 for Figure 6 Detail B of

[0051] Figure 8 It is a structural schematic diagram of a single shell;

[0052] Fig. 9 It is a schematic diagram of the pipeline when a surface temperature control system is provided on the monomer shell in the energy storage cluster;

[0053] Fig.10 It is a schematic diagram of the pipeline when a temperature control unit is provided between the energy storage units in the energy storage cluster;

[0054] Fig.11 It is a schematic diagram of the structure when a reinforcing rib is provided on the single body shell;

[0055] Fig.12 for Fig.11 Detailed drawing of C.

[0056] Description of reference numerals:

[0057] 10- box body; 11- temperature control device;

[0058] 20-energy storage cluster; 21-cluster bracket; 22-first medium injection pipeline; 23-first medium return pipeline; 24-temperature control unit; 25-unit temperature control channel; 26-second medium inlet; 27-second medium outlet; 28-second medium injection pipeline; 29-second medium return pipeline; 30-second medium flow control valve;

[0059] 40-energy storage cell; 41-cell shell; 42-battery slot; 43-energy storage battery; 44-cell pole ear; 45-first side panel; 46-second side panel; 47-side panel temperature control flow channel; 48-insulating heat-conducting diaphragm; 49-connecting block; 50-battery pole ear; 51-cell surface; 52 surface temperature control flow channel; 53-first medium inlet; 54-first medium outlet; 55-first medium flow control valve; 56-first cell side; 57-second cell side; 58-exhaust valve; 59-vent; 60-negative pressure pipe; 61-thermal runaway protection medium injection pipe; 62-thermal runaway protection medium injection valve; 63-reinforcement rib. DETAILED DESCRIPTION

[0060] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0061] like Figure 1 As shown, it is a schematic diagram of the structure of an embodiment of the energy storage device of the present invention. The energy storage device of this embodiment includes a casing 10, and a plurality of energy storage clusters 20 are installed in the casing 10. The energy storage cluster 20 of this embodiment includes a cluster bracket 21, and a plurality of combined energy storage monomers 40 (hereinafter referred to as "energy storage monomers 40") are installed on the cluster bracket 21. The energy storage monomer 40 of this embodiment includes a monomer shell 41, and a plurality of battery slots 42 are provided in the monomer shell 41, and all battery slots 42 are divided into at least one group. At least one energy storage battery 43 is installed in the battery slot 42, and the energy storage batteries 43 installed in the battery slots 42 belonging to the same group are connected in series or in parallel, and a monomer pole ear 44 is provided on the monomer shell 41 corresponding to each group of battery slots 42. As shown Figure 6 As shown, the single body shell 41 of this embodiment is provided with 8 battery slots 42 in total, and all battery slots 42 are divided into 4 groups, that is, each group includes two battery slots 42. Of course, according to actual needs, the battery slots 42 can also be set to 1 group, 2 groups, etc., which will not be repeated. Specifically, the energy storage battery 43 of this embodiment adopts a soft pack battery.

[0062] Furthermore, a first side plate 45 and a second side plate 46 are provided in the monomer housing 41, the first side plate 45 and the second side plate 46 are perpendicular to each other, and the first side plate 45 and the second side plate 46 separate a plurality of battery slots 42 in the monomer housing. Preferably, a side plate temperature control channel 47 for the circulation of a temperature control medium is provided in the first side plate 45 of this embodiment, so as to control the temperature of the battery slot 42 and keep the temperature of the battery slot 42 within a set temperature range.

[0063] Furthermore, a plurality of energy storage batteries are stacked in each battery slot 42. In this embodiment, two energy storage batteries 43 are stacked in each battery slot 42. In the battery slot 42, an insulating heat-conductive diaphragm 48 is provided between two adjacent energy storage batteries 43. Preferably, one end of the insulating heat-conductive diaphragm 48 close to the first side plate 45 is in contact with the first side plate 45, thereby accelerating the heat exchange between the joint surface of the two energy storage batteries and the first side plate, further controlling the operating temperature of the energy storage battery, and preventing the local temperature from exceeding the set operating temperature range. Preferably, a thermistor is provided on the insulating heat-conductive diaphragm 48 of this embodiment, and the thermistor is used to measure the temperature in real time, so as to monitor the temperature of the energy storage battery 43 in real time.

[0064] Furthermore, a connecting block 49 is provided in the second side plate 46, and the battery tabs 50 of the energy storage batteries 43 located on both sides of the second side plate 46 are connected to the corresponding connecting blocks 49, that is, the energy storage batteries 43 are connected in series or in parallel through the internal circuit, which can effectively simplify the external control circuit.

[0065] Further, the two side surfaces of the monomer shell 41 that are perpendicular to the first side plate 45 and the second side plate 46 are monomer surfaces 51, and at least one of the two monomer surfaces 51 is provided with a surface temperature control system. In this embodiment, a surface temperature control system is provided on one of the monomer surfaces 51. The surface temperature control system of this embodiment includes a surface temperature control channel 52 for the circulation of a temperature control medium to achieve control of the temperature of the energy storage monomer 40, so that the energy storage monomer 40 is maintained in operation within a set temperature range. Specifically, a first medium inlet 53 and a first medium outlet 54 are provided at both ends of the surface temperature control channel, respectively, and a first medium injection pipe 22 for introducing a temperature control medium and a first medium return pipe 23 for returning the temperature control medium are provided on the cluster bracket 21, the first medium inlet 53 is connected to the first medium injection pipe 22, and the first medium outlet 54 is connected to the first medium return pipe 23. Preferably, a first medium flow control valve 55 for controlling the medium flow is provided at the first medium inlet 53. Since the energy storage cluster contains multiple energy storage cells 40, and each energy storage cell 40 is provided with a surface temperature control channel 52, it is difficult to ensure that the flow of the cooling medium in the surface temperature control channel 52 of each energy storage cell 40 is equal or within a certain error fluctuation range, so it is difficult to ensure that each energy storage cell 40 can obtain an effective temperature control effect. By setting a first medium flow control valve 55, the opening of the first medium inlet 53 can be adjusted in real time, thereby adjusting the flow of the cooling medium in the surface temperature control channel 52 of each energy storage cell 40, so as to ensure that during normal operation, the flow of the cooling medium in the surface temperature control channel 52 of each energy storage cell 40 is within the set threshold range. Further, the first medium injection pipe 22 and the first medium return pipe 23 are fixedly installed on the cluster bracket 21; or the cluster bracket 21 includes a column, and the first medium injection pipe 22 and the first medium return pipe 23 are arranged in the column.

[0066] In some embodiments, energy storage cells 40 are provided at intervals on the cluster support 21, and temperature control cells 24 are provided between adjacent energy storage cells 40. Specifically, a cell temperature control channel 25 for the circulation of temperature control medium is provided in the temperature control cell 24, and a second medium inlet 26 and a second medium outlet 27 are provided at both ends of the cell temperature control channel 25; a second medium injection pipe 28 for the introduction of temperature control medium and a second medium return pipe 29 for the return of temperature control medium are provided on the cluster support 21, the second medium inlet 26 is connected to the second medium injection pipe 28, and the second medium outlet 27 is connected to the second medium return pipe 29. Of course, a second medium flow control valve 30 for controlling the medium flow rate can also be provided at the second medium inlet 26 to achieve the technical purpose of controlling the flow rate of the temperature control medium in each temperature control cell 24, and its function is equivalent to that of the first medium flow control valve 55, which will not be described again.

[0067] Further, the monomer housing 41 includes two first monomer side surfaces 56 parallel to the first side plate 45 and two second monomer side surfaces 57 parallel to the second side plate 46. An exhaust valve 58 is provided on the first monomer side surface 56 or the second monomer side surface 57 for exhausting air after the air pressure in the monomer housing 41 exceeds a set value. Of course, the exhaust valve 58 can also be provided on both the first monomer side surface 56 and the second monomer side surface 57. The exhaust valve 58 of this embodiment is provided on the first monomer side surface 56. The first side plate 45 and / or the second side plate 46 of this embodiment are provided with a vent hole 59 for connecting the battery slot 42 with the exhaust valve 58. Two exhaust valves 58 are provided on the first monomer side surface 56 of this embodiment. The vent hole 59 of this embodiment is provided on the first side plate 45. Preferably, a negative pressure pipe 60 is connected to the exhaust valve 58, and the negative pressure effect can be used to accelerate the exhaust of gas.

[0068] Further, the exhaust valve 58 is arranged on one of the first monomer side surfaces 56 and / or the second monomer side surfaces 57, and the other first monomer side surfaces 56 and / or the second monomer side surfaces 57 are provided with an anti-thermal runaway medium injection pipe 61, and the anti-thermal runaway medium injection pipe 61 is provided with an anti-thermal runaway medium injection valve 62. The exhaust valve 58 of this embodiment is arranged on one of the first monomer side surfaces 56, and the anti-thermal runaway medium injection pipe 61 is arranged on the other first monomer side surface 56. The anti-thermal runaway medium adopts fluorinated liquid, inert gas, nitrogen, carbon dioxide or R134a. The anti-thermal runaway medium of this embodiment adopts fluorinated liquid, specifically, Chemours FM-200 or SF-10 fluorinated liquid can be selected. The fluorinated liquid will not react chemically with the electrolyte and the electrode active material. After passing through the fluorinated liquid, the temperature of the energy storage cell can be quickly controlled. At the same time, the gas generated after the thermal runaway of the energy storage cell can be discharged while carrying part of the electrolyte, delaying the process of thermal runaway of the energy storage cell, or even eliminating the thermal runaway reaction of the energy storage cell, greatly improving the operation safety performance.

[0069] Further, if Fig.11 As shown, in some embodiments, in order to strengthen the structural strength of the monomer housing 41, a reinforcing rib 63 for reinforcing the structural strength may be provided on the monomer housing 41. The reinforcing rib 63 may be provided on the monomer housing 41 in various existing ways, such as being directly welded to the monomer housing 41, or being formed by pressing a groove for reinforcing the structural strength on the monomer housing 41, which will not be described again.

[0070] Furthermore, in some embodiments, a temperature control plate may be further provided on the cluster bracket 21, and a plate temperature control channel for the circulation of a temperature control medium may be provided on the temperature control plate, thereby achieving a temperature control effect.

[0071] Furthermore, in some embodiments, a sealed shell may be provided on the cluster support 21, and the sealed shell is filled with nitrogen or an inert gas to prevent explosion.

[0072] Furthermore, energy storage clusters 20 are arranged at intervals in the box 10 of this embodiment, and a temperature control device 11 is arranged between two adjacent energy storage clusters 20, and the energy storage cluster 20 contacts and cooperates with the adjacent temperature control device 11. The temperature control device 11 of this embodiment is provided with a device temperature control channel for the circulation of the temperature control medium, which further plays a role in temperature control. Of course, in some embodiments, a box temperature control device can also be provided on the side wall and / or bottom surface of the box 10, which can also play a role in temperature control, and no further description is given.

[0073] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An energy storage cluster, characterized in that: It includes a cluster bracket, on which a plurality of combined energy storage monomers are installed; The combined energy storage monomer comprises a monomer shell, wherein a plurality of battery slots are arranged in the monomer shell, and all the battery slots are divided into at least one group; At least one energy storage battery is installed in the battery slot, and the energy storage batteries installed in the battery slots belonging to the same group are connected in series or in parallel, and the single body shell is provided with single pole ears corresponding to each group of the battery slots; A first side plate and a second side plate are provided in the single body shell, the first side plate and the second side plate are perpendicular to each other, and the first side plate and the second side plate separate a plurality of battery slots in the single body shell; A side plate temperature control flow channel for the circulation of a temperature control medium is provided in the first side plate; A plurality of energy storage batteries are stacked in each battery slot; an insulating heat-conducting diaphragm is provided between two adjacent energy storage batteries in the battery slot; a thermistor is provided on the insulating heat-conducting diaphragm; The two side surfaces of the monomer housing that are perpendicular to the first side plate and the second side plate are monomer surfaces, and at least one of the two monomer surfaces is provided with a surface temperature control system; One end of the insulating heat-conductive diaphragm close to the first side plate is in contact with the first side plate; A connecting block is provided in the second side plate, and the battery tabs of the energy storage battery located on both sides of the second side plate are connected to the corresponding connecting blocks; The surface temperature control system includes a surface temperature control flow channel for the circulation of a temperature control medium; The monomer housing comprises two first monomer side surfaces parallel to the first side plate and two second monomer side surfaces parallel to the second side plate; an exhaust valve for exhausting air when the air pressure in the monomer housing exceeds a set value is provided on the first monomer side surface and / or the second monomer side surface; The first side plate and / or the second side plate is provided with a vent hole for connecting the battery slot with the exhaust valve; The exhaust valve is connected with a negative pressure pipe; The exhaust valve is arranged on one of the first monomer side surface and / or the second monomer side surface, and an anti-thermal runaway medium injection pipe is arranged on the other first monomer side surface and / or the second monomer side surface, and an anti-thermal runaway medium injection valve is arranged on the anti-thermal runaway medium injection pipe; The two ends of the surface temperature control flow channel are respectively provided with a first medium inlet and a first medium outlet, the cluster bracket is provided with a first medium injection pipeline for introducing the temperature control medium and a first medium return pipeline for returning the temperature control medium, the first medium inlet is connected to the first medium injection pipeline, and the first medium outlet is connected to the first medium return pipeline; A first medium flow control valve for controlling the medium flow is provided at the first medium inlet; The first medium injection pipe and the first medium return pipe are fixedly mounted on the cluster support; or the cluster support includes a column, and the first medium injection pipe and the first medium return pipe are arranged in the column; The cluster support is provided with energy storage units at intervals, and temperature control units are provided between adjacent energy storage units; The temperature control unit is provided with a unit temperature control channel for the circulation of the temperature control medium, and the two ends of the unit temperature control channel are respectively provided with a second medium inlet and a second medium outlet; the cluster bracket is provided with a second medium injection pipeline for the introduction of the temperature control medium and a second medium return pipeline for the return of the temperature control medium, the second medium inlet is connected to the second medium injection pipeline, and the second medium outlet is connected to the second medium return pipeline; A second medium flow control valve for controlling the flow of the medium is provided at the second medium inlet; The cluster bracket is also provided with a temperature control plate; The temperature control plate is provided with a plate temperature control channel for the circulation of the temperature control medium; The cluster support is provided with a sealed shell, and the sealed shell is filled with nitrogen or inert gas.

2. The energy storage cluster according to claim 1, characterized in that: The energy storage battery is a soft-pack battery.

3. The energy storage cluster according to claim 1, characterized in that: The single body shell is provided with reinforcing ribs for enhancing the structural strength.

4. An energy storage device, characterized in that: It comprises a box body, in which a plurality of energy storage clusters according to any one of claims 1 to 3 are installed.

5. The energy storage device according to claim 4, characterized in that: The energy storage clusters are arranged in intervals in the box body, a temperature control device is arranged between two adjacent energy storage clusters, and the energy storage clusters are in contact with and cooperate with the adjacent temperature control devices.

6. The energy storage device according to claim 5, characterized in that: The temperature control device is provided with a device temperature control channel for the circulation of the temperature control medium.

7. The energy storage device according to claim 4, characterized in that: A box temperature control device is arranged on the side wall and / or the bottom surface of the box.

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