CN220341361U

CN220341361U - Energy storage system and power equipment

Info

Publication number: CN220341361U
Application number: CN202321987758.XU
Authority: CN
Inventors: 江有强; 张泽昊
Original assignee: Wuhan Eve Energy Storage Co ltd
Current assignee: Wuhan Eve Energy Storage Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-01-12
Anticipated expiration: 2033-07-26

Abstract

The application relates to an energy storage system and power equipment, comprising a plurality of electric cores; the battery pack comprises a box body, a plurality of battery cells, a plurality of heat dissipation fins and a plurality of heat dissipation modules, wherein a plurality of mounting parts are arranged in the box body, slots are formed in the mounting parts, each battery cell is arranged in one slot, and the outer side walls of the mounting parts are provided with the first heat dissipation fins; the upper support and the lower support are arranged at two ends of the box body and form a mounting space for fixing the battery cell with the box body. Therefore, the heat generated by the battery cell is conducted to the outside through the first heat dissipation fins on the outer side wall of the mounting part, the heat dissipation capacity of the energy storage system is improved, and the service life of the battery cell is prolonged. In addition, because the battery cell is fixed only through the upper bracket, the lower bracket and the box body, the energy storage system is de-modularized, the module assembly procedure and related parts are omitted, the production assembly efficiency of the energy storage system can be improved, the productivity is improved, and the cost can be reduced.

Description

Energy storage system and power equipment

Technical Field

The application relates to the technical field of batteries, in particular to an energy storage system and power equipment.

Background

With the continuous reform of continuous propulsion energy sources in China, the development of the propulsion energy sources is changed from extensive type to high-quality development, so that the energy source volatility problem is further solved, energy storage and other technologies are integrated into power grid optimization, energy storage equipment is introduced into a base station, the utilization rate of batteries is effectively improved, the power supply cost is reduced, and a certain influence is generated on the energy consumption mode.

At present, most energy storage systems are used after being insulated by locking screws, and the batteries and the box body are put into use without adding thermal management measures, so that the temperature distribution in the energy storage systems is uneven, and under the conditions of high multiplying power or long-time circulation, the temperature in the energy storage systems is overhigh, high-temperature alarm is generated, the use experience of customers is influenced, and the service life of the battery cells is also influenced.

Disclosure of Invention

Based on the above, it is necessary to provide an energy storage system and a power device, which can improve the heat dissipation capability of the energy storage system and prolong the service life of the battery cell.

In a first aspect, the present application provides an energy storage system comprising:

a plurality of electrical cores;

the battery pack comprises a box body, a plurality of battery cells, a plurality of heat dissipation fins and a plurality of heat dissipation modules, wherein a plurality of mounting parts are arranged in the box body, slots are formed in the mounting parts, each battery cell is arranged in one slot, and the outer side walls of the mounting parts are provided with the first heat dissipation fins;

the upper support and the lower support are arranged at two ends of the box body and form a mounting space for fixing the battery cell with the box body.

In one embodiment, the first heat radiation fins include a plurality of heat radiation fins provided on the outer side wall along a circumferential direction of the mounting portion.

In one embodiment, the energy storage system further comprises a plurality of second heat dissipation fins, the second heat dissipation fins are connected with the side wall of the box body to divide the interior of the box body into a plurality of heat dissipation channels, and part of the first heat dissipation fins are connected with the second heat dissipation fins.

In one embodiment, a heat dissipation space is formed between the battery cell and the inner side wall of the mounting portion, and a heat conducting member is disposed in the heat dissipation space.

In one embodiment, at least one of the upper bracket and the lower bracket is provided with a heat conducting through hole, and the heat conducting through hole is arranged corresponding to the heat dissipation space, so that raw materials of the heat conducting piece can be conveniently input into the heat dissipation space from the heat conducting through hole.

In one embodiment, the heat conducting through holes comprise two or more, and are arranged on at least one of the upper bracket and the lower bracket at equal intervals.

In one embodiment, the energy storage system further comprises an upper protective cover and a lower protective cover, and the upper bracket and the lower bracket are respectively clamped with the upper protective cover and the lower protective cover.

In one embodiment, the battery cell is cylindrical, and the battery cell is fixed with the upper bracket and the lower bracket respectively through double-sided welding.

In one embodiment, a handle, a power output port and a communication port are arranged on the outer side wall of the box body, and the handle is of a U-shaped structure.

In a second aspect, the present application also provides a power plant comprising an energy storage system as described above.

The above describes an energy storage system and power device comprising a plurality of electrical cores; the battery pack comprises a box body, a plurality of battery cells, a plurality of heat dissipation fins and a plurality of heat dissipation modules, wherein a plurality of mounting parts are arranged in the box body, slots are formed in the mounting parts, each battery cell is arranged in one slot, and the outer side walls of the mounting parts are provided with the first heat dissipation fins; the upper support and the lower support are arranged at two ends of the box body and form a mounting space for fixing the battery cell with the box body. Therefore, the heat generated by the battery cell is conducted to the outside through the first heat dissipation fins on the outer side wall of the mounting part, the heat dissipation capacity of the energy storage system is improved, and the service life of the battery cell is prolonged. In addition, because the battery cell is fixed only through the upper bracket, the lower bracket and the box body, the energy storage system is de-modularized, the module assembly procedure and related parts are omitted, the production assembly efficiency of the energy storage system can be improved, the productivity is improved, and the cost can be reduced.

Drawings

FIG. 1 is a schematic diagram illustrating an exploded view of an energy storage system according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the assembled housing and cell of the energy storage system of FIG. 1;

FIG. 3 is a schematic illustration of the assembly of the tank, upper rack, and lower rack of the energy storage system of FIG. 1;

FIG. 4 is a cross-sectional view of the energy storage system of FIG. 1 in a vertical direction;

FIG. 5 is an enlarged schematic view of the energy storage system of FIG. 4 at A;

fig. 6 is a schematic diagram of a combination state of the energy storage system shown in fig. 1.

Reference numerals in the embodiments of the present application are described below:

the energy storage system 10, the battery cell 11, the case 12, the upper bracket 13, the lower bracket 14, the mounting portion 121, the slot 1211, the first heat sink 1212, the second heat sink 1213, the side wall 124, the first side wall 1241, the second side wall 1242, the first portion 1214, the second portion 1215, the heat dissipation space 200, the heat conduction through hole 134, the upper protection cover 15, the lower protection cover 16, the engagement hole 141, the buckle 151, the handle 121, the power output port 122, and the communication port 123.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an exploded state of an energy storage system according to an embodiment of the present application. As shown in fig. 1, the energy storage system 10 includes a plurality of cells 11, a case 12, an upper bracket 13, and a lower bracket 14.

The upper bracket 13 and the lower bracket 14 are respectively provided at both ends of the case 12, and can be fixed to the case 12 by screws or the like. The upper and lower brackets 13 and 14 form an installation space with the case 12 to fix the battery cell 11. A plurality of mounting portions 121 are disposed in the case 12, slots 1211 are formed in the mounting portions 121, each of the battery cells 11 is disposed in one of the slots 1211, and the first heat dissipation fins 1212 are disposed on the outer side walls of the mounting portions 121. Wherein the box 12 may be an aluminum extrusion box.

Therefore, in the present embodiment, the heat generated by the battery cell 11 can be conducted to the outside through the first heat dissipation fins 1212 on the outer sidewall of the mounting portion 121, and particularly, the heat generated by the battery cell 11 located in the middle of the case 12 can be conducted away, so as to improve the heat dissipation capability of the energy storage system 10 and prolong the service life of the battery cell 11. In addition, the battery cell 11 is fixed only through the upper bracket 13, the lower bracket 14 and the box 12, so that the energy storage system 10 is de-modularized, a module assembly process and related parts are omitted, the production and assembly efficiency of the energy storage system 10 can be improved, the productivity is improved, and the cost can be reduced.

Optionally, the first heat sink fin 1212 includes a plurality of heat sink fins disposed on an outer sidewall of the mounting portion 1211 along a circumferential direction of the mounting portion 1211. The heat dissipation can be performed at a plurality of positions of the battery cell 11, and the heat dissipation effect is improved.

Optionally, referring to fig. 2, fig. 2 is a schematic structural diagram of the case and the battery cell assembly in the energy storage system shown in fig. 1. The energy storage system 10 further includes a plurality of second heat dissipation fins 1213, wherein the second heat dissipation fins 1213 are connected to the side wall of the housing 12 to divide the interior of the housing 12 into a plurality of heat dissipation channels, and a part of the first heat dissipation fins 1212 are connected to the second heat dissipation fins 123.

In a specific embodiment, the side wall 124 of the case 12 includes a first side wall 1241 and a second side wall 1242, the first side wall 1241 is disposed inside the case 12, the second side wall 1242 is disposed on the outer periphery of the case 12, and the first side wall 1241 and the second side wall 1242 enclose an annular space, and the battery cell 11 is disposed in the annular space. The second heat dissipation fins 123 divide the interior of the case 12 into a plurality of heat dissipation channels by connecting the first side wall 1241 and the second side wall 1242 of the case 12.

In a particular embodiment, the second heat fins 1213 include a first portion 1214 and a second portion 1215. The first portion 1214 is connected to the first side wall 1241 and the second side wall 1242 of the box 12 to form a heat dissipation channel inside the box 12, and further, the first portion 1214 is further connected to the first heat dissipation fin 1212, so as to conduct heat of the first heat dissipation fin 1212 to the second side wall 1242 for performing a heat exchange operation with the outside. The second portions 1215 are disposed at both sides of the first portion 1214 and connected to the first portion 1214, a heat dissipation space exists around the second portions 1215, and the second portions 1215 serve to conduct heat conducted by the first portions 1214 to the heat dissipation space. That is, the second portion 1215 uses the natural mode to dissipate heat, so that the problem that the temperature of the middle portion is too high due to too tight arrangement of the battery cells 11 can be solved, and the internal temperature of the energy storage system 10 is better consistent, so that the use times of the battery cells 11 are prolonged.

Optionally, the connection of the first heat sink 1212 follows a close rule, specifically, the first heat sink 1212 closer to the first portion 1214 is connected to the first portion 1214, the first heat sink 1212 closer to the first sidewall 1241 is connected to the first sidewall 1241, and the first heat sink 1212 closer to the second sidewall 1242 is connected to the second sidewall 1242.

Optionally, a heat dissipation space 200 is formed between the battery cell 11 and an inner sidewall of the mounting portion 1211, and a heat conduction member (not shown) is disposed in the heat dissipation space 200. Therefore, when the battery cell 11 of the energy storage system 10 is charged and discharged, the generated heat can be transferred to the first heat dissipation fins 1212, the second heat dissipation fins 1213 and the side wall 124 of the case 12 through the heat conducting member, and the heat exchange operation is performed with the outside, such as heat dissipation in the heat dissipation direction shown in fig. 2, so as to improve the heat dissipation capability of the energy storage system 10.

Optionally, referring to fig. 3, fig. 3 is a schematic structural diagram illustrating assembly of the tank, the upper bracket and the lower bracket in the energy storage system shown in fig. 1. A heat-conducting through hole 134 is provided in at least one of the upper and lower brackets 13 and 14, and the heat-conducting through hole 134 is provided corresponding to the heat-dissipating space 200, so that raw materials (e.g., heat-conducting glue) of the heat-conducting member can be easily introduced into the heat-dissipating space 200 from the heat-conducting through hole 134.

In a specific embodiment, the heat conducting through holes 134 may include two or more of the upper bracket 13 and the lower bracket 14, which are disposed at equal intervals. For example on the upper support 13. The speed of the raw material (for example, heat-conducting glue) of the heat-conducting member entering the heat-dissipating space 200 can be increased, and the heat-dissipating space 200 can be ensured to be filled with the raw material of the heat-conducting member at each position, that is, the battery cell 11 is wrapped with the raw material of the heat-conducting member, so as to improve the heat-conducting capability of the heat-conducting member.

Optionally, the energy storage system 10 further includes an upper protection cover 15 and a lower protection cover 16, where the upper bracket 13, the lower bracket 14, the upper protection cover 15 and the lower protection cover 16 are made of plastic materials, and the upper bracket 13 and the lower bracket 14 are respectively engaged with the upper protection cover 15 and the lower protection cover 16. Because the plastics have elasticity, the upper bracket 13 of this application with the lower carriage 14 respectively with last visor 15 with lower visor 16 block can reduce the use of fastener, reduce the cost to the installation is swift convenient, convenient to detach maintains.

In a specific embodiment, please refer to fig. 4 and fig. 5 together, wherein fig. 4 is a vertical cross-sectional view of the energy storage system shown in fig. 1, and fig. 5 is an enlarged schematic view of the energy storage system at a shown in fig. 4. The side wall of the upper bracket 14 is provided with an engaging hole 141, the side wall of the upper protection cover 15 is provided with a buckle 151, and the buckle 151 is engaged with the upper bracket 13 through the engaging hole 141. It should be understood that the fixing manner of the lower bracket 14 and the lower protection cover 16 is the same as that of the upper bracket 13 and the upper protection cover 15, and will not be described herein.

Optionally, the battery cell 11 is cylindrical, and the battery cell 11 is fixed to the upper bracket 13 and the lower bracket 14 respectively by double-sided welding.

In a specific embodiment, the battery 11 is a cylindrical battery, and the cylindrical battery has an anti-expansion property, and no risk of expansion of the battery, so as to ensure insulation and reliability of the energy storage system 10, an upper bracket 13 and a lower bracket 14 are used as a group, and the upper bracket 13 and the lower bracket 14 are fixed to the box 12 through screws. And heat conducting glue (raw material of heat conducting piece) is injected into the heat conducting through hole 134 of the upper bracket 13, the heat conducting glue completely wraps the battery core 11, insulation protection is formed, a heat dissipation channel is established, and double-sided laser welding is performed after the surface of the heat conducting glue is dried. By adopting the double-sided welding mode, screw and end plate structures are not needed, fewer assembly parts are needed, and the installation efficiency of the energy storage system 10 is high.

Optionally, referring to fig. 6, fig. 6 is a schematic structural diagram illustrating a combined state of the energy storage system shown in fig. 1. The outer side wall of the box body 12 is provided with a handle 121, a power output port 122 and a communication port 123, and the handle 121 is of a U-shaped structure. The U-shaped handle 121 facilitates the operator to pull and push the case 12 out from between the upper and lower protective covers 15 and 16.

Optionally, the energy storage system 10 further includes an LCD (Liquid Crystal Display ) module (not shown) for knowing the State of Charge (SOC) and State of Charge (SOC) of the battery in real time, so as to realize real-time monitoring of the SOH (State of Health) of the energy storage system 10.

In summary, in the energy storage system 10 of the present application, a plurality of mounting portions 121 are disposed inside the case 12, slots 1211 are formed inside the mounting portions 121, each of the electric cores 11 is disposed inside one of the slots 1211, and the outer side wall of the mounting portion 121 is provided with a first heat dissipation fin 1212, so that heat generated by the electric core 11 can be absorbed, and is conducted to the case 12 through a second heat dissipation fin 1213, and is conducted to the outside through the case 12 to exchange heat with the outside, thereby improving the temperature consistency of the energy storage system 10, and the electric cores 11 do not mutually affect each other.

In addition, this application is through fixed electric core 11 in groups of upper bracket 13 and lower carriage 14 and box 12, adopts the management of integrating, directly cancels relevant sheet metal parts such as traditional battery module end plate, screw rod, and equipment part quantity significantly reduces can effectively improve production efficiency, pours into the heat conduction glue into between electric core 11 and the installation department 121 of box 12 simultaneously, forms insulation protection and establishes the heat dissipation passageway, can improve heat conduction efficiency.

Furthermore, the upper bracket 13, the lower bracket 14, the upper protective cover 15 and the lower protective cover 16 are respectively fixed with the plastic by utilizing the elasticity of the plastic, and the fastening pieces are not needed, so that the use of the fastening pieces can be reduced, the cost is reduced, the installation is quick and convenient, and the disassembly and the maintenance are convenient.

Finally, the energy storage system 10 is displayed by an LCD, and can be displayed in real time according to the SOH state, so that the state of the battery cell 11 in the energy storage system 10 can be known in real time.

The present application also provides a power plant comprising the energy storage system 10 described previously.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. An energy storage system, the energy storage system comprising:

a plurality of electrical cores;

2. The energy storage system of claim 1, wherein the first heat sink fin comprises a plurality of fins disposed on the outer sidewall along a circumferential direction of the mounting portion.

3. The energy storage system of claim 1, further comprising a plurality of second heat fins, wherein the second heat fins are connected to the second heat fins by connecting a side wall of the housing to divide the interior of the housing into a plurality of heat dissipation channels, and wherein a portion of the first heat fins are connected to the second heat fins.

4. The energy storage system of claim 1, wherein a heat dissipation space is formed between the battery cell and an inner sidewall of the mounting portion, and a heat conducting member is disposed in the heat dissipation space.

5. The energy storage system of claim 4, wherein a heat conducting through hole is provided in at least one of the upper and lower brackets, the heat conducting through hole being provided corresponding to the heat dissipation space, so that raw materials of the heat conducting member are conveniently input into the heat dissipation space from the heat conducting through hole.

6. The energy storage system of claim 5, wherein the thermally conductive vias comprise two or more equally spaced apart on at least one of the upper and lower brackets.

7. The energy storage system of claim 1, further comprising an upper protective cover and a lower protective cover, wherein the upper bracket and the lower bracket are engaged with the upper protective cover and the lower protective cover, respectively.

8. The energy storage system of claim 1, wherein the battery cell is cylindrical, and the battery cell is fixed to the upper bracket and the lower bracket by double-sided welding.

9. The energy storage system of claim 1, wherein a handle, a power output port and a communication port are provided on an outer sidewall of the housing, the handle being of a U-shaped configuration.

10. A power plant comprising an energy storage system according to any one of claims 1-9.