CN211350906U - Energy storage battery plug-in box and energy storage system thereof - Google Patents
Energy storage battery plug-in box and energy storage system thereof Download PDFInfo
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- CN211350906U CN211350906U CN202020210575.7U CN202020210575U CN211350906U CN 211350906 U CN211350906 U CN 211350906U CN 202020210575 U CN202020210575 U CN 202020210575U CN 211350906 U CN211350906 U CN 211350906U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of lithium battery manufacturing, in particular to an energy storage battery plug-in box and an energy storage system thereof, wherein the energy storage battery plug-in box comprises a base and a plurality of rows of electric core groups fixed on the base, each row of electric core group comprises a plurality of electric cores arranged at equal intervals, and heat dissipation fins are arranged between the adjacent electric cores; an inlet and an outlet for radiating cooling air are arranged in the energy storage battery plug box, and the total heat radiation area of the heat radiation fins in the electric core group close to the inlet is smaller than that of the heat radiation fins in the electric core group close to the outlet. The utility model discloses an adjustment is arranged in the total heat radiating area of the heat radiating fin of the electric core group of different positions in the energy storage battery subrack, makes the electric core that is in different positions can both obtain same radiating effect, finally makes electric core temperature can compare the homogeneous.
Description
Technical Field
The utility model relates to a lithium cell makes technical field, specifically relates to energy storage battery subrack and energy storage system thereof.
Background
The energy storage system is a new energy device which stores a large number of energy storage lithium batteries in a container or a cabinet and has the functions of peak clipping, valley filling, frequency modulation and the like, and has the advantages of easiness in installation, transportation, modularization and the like. The energy storage battery subrack is a mechanism for fixing a large amount of lithium batteries in the energy storage system, and the energy storage battery subrack is used for storing a large amount of energy storage lithium batteries in a concentrated manner, so that the performance of the lithium batteries can be directly influenced by the heat dissipation performance of the energy storage battery subrack, namely, the temperature difference of the energy storage battery subrack has great influence on the temperature difference of the whole energy storage system. The existing energy storage battery plug box is generally cooled by air, an air duct with the same cell interval is usually arranged in the energy storage battery plug box, and the cell realizes air cooling heat dissipation through surface and cold air convection heat exchange. For the air ducts with the same distance, the temperature of cold air flowing to the front row of cells is low, so that a good heat dissipation effect can be achieved, once the cold air flows to the rear row of cells, the temperature of the cold air is increased through heat exchange with the surfaces of the front row of cells and the rear row of cells, so that the temperature difference between the front row of cells and the rear row of cells is large, and the rear row of cells are high due to the fact that the heat dissipation amount is reduced, and even the situation of local overheating can occur. Therefore, the existing air duct cannot enable each battery cell to dissipate heat uniformly, so that the temperature rise of the battery cells is not uniform, the consistency of the battery cells is poor, and the cycle life of the battery cells and the energy storage system is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the poor problem of equidistant wind channel radiating effect that prior art exists, providing energy storage battery subrack and energy storage system, being arranged in the total heat radiating area of the heat radiating fin of the electric core group of different positions in the energy storage battery subrack through the adjustment, the electric core that makes to be in different positions can both obtain same radiating effect, finally makes electric core temperature can compare the homogeneous.
In order to achieve the above object, an aspect of the present invention provides an energy storage battery box, including a base and a plurality of rows of electric core groups fixed on the base, each row of electric core group includes a plurality of electric cores arranged at equal intervals, and a heat dissipation fin is arranged between adjacent electric cores; the energy storage battery plug-in box is internally provided with an inlet and an outlet for radiating cooling air, and the total heat dissipation area of the heat dissipation fins in the electric core group close to the inlet is smaller than the total heat dissipation area of the heat dissipation fins in the electric core group close to the outlet.
Preferably, the areas of all the heat dissipation fins arranged in the energy storage battery box are equal, and the number of the heat dissipation fins close to the inlet is less than the number of the heat dissipation fins close to the outlet.
Preferably, the number of the heat dissipation ribs is increased in a direction from the inlet to the outlet.
Preferably, the number of the battery cell groups is three, the first row, the second row and the third row are sequentially arranged from the inlet to the outlet, and the number of the heat dissipation fins arranged between the battery cells in the first row, the second row and the third row is 2, 3 and 4 in sequence.
Preferably, the number of the heat dissipation fins between the electric cores of each row of the electric core group arranged in the energy storage battery box is equal, and the sheet area of the heat dissipation fins close to the inlet is smaller than that of the heat dissipation fins close to the outlet.
Preferably, the fin body area of the heat dissipation fins increases in the direction from the inlet to the outlet.
Preferably, the fin body area proximate the inlet is 1/3-1/2 of the fin body area proximate the outlet.
Preferably, the arrangement direction of the sheet body of the heat dissipation fin is perpendicular to the direction of the side wall of the battery core.
Preferably, the number of the heat dissipation fins between the adjacent battery cells is multiple.
The utility model discloses the second aspect provides an energy storage system, be in including box and setting battery subrack support in the box, be fixed with on the battery subrack support as above energy storage battery subrack.
Through the technical scheme, the utility model discloses an adjustment is arranged in the total heat radiating area of the heat radiating fin piece in the electric core group of different positions in the energy storage battery subrack, makes the electric core that is in different positions can both obtain same radiating effect, finally makes electric core temperature can compare the homogeneous.
Drawings
Fig. 1 is a schematic top view of an energy storage battery box according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of each row of electric core assemblies in FIG. 1;
fig. 3 is a schematic top view of a second energy storage battery box according to an embodiment of the present invention;
fig. 4 is a schematic view of the structure of each row of electric core assemblies in fig. 3.
Description of the reference numerals
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, left, and right" generally means upper, lower, left, and right as illustrated with reference to the accompanying drawings; "inner and outer" generally refer to the inner and outer relative to the profile of the components themselves; "distal and proximal" generally refer to distance relative to the contour of the components themselves.
Example one
As shown in fig. 1 and fig. 2, the utility model provides an energy storage battery plug-in box, which includes a base 100 and a plurality of rows of electric core groups 200 fixed on the base 100, each row of electric core groups 200 includes a plurality of electric cores 210 arranged at equal intervals, and heat dissipation fins 220 are arranged between adjacent electric cores 210; an inlet 110 and an outlet 120 for radiating cooling air are arranged in the energy storage battery plug box, and the total heat radiation area of the heat radiation fins 220 in the electric core group 200 close to the inlet 110 is smaller than the total heat radiation area of the heat radiation fins 220 in the electric core group 200 close to the outlet 120. That is to say, the utility model discloses an adjustment is arranged in the total heat radiating area of the heat radiating fin piece in the electric core group of different positions in the energy storage battery subrack, makes the electric core that is in different positions can both obtain same radiating effect, finally makes electric core temperature can compare the homogeneous.
In order to achieve the effect, the sheet body areas of the radiating fins at all positions can be set to be the same, and the arrangement quantity of the radiating fins at different positions is adjusted; alternatively, the number of the heat dissipation fins at all positions may be set to be the same, and the sheet areas of the heat dissipation fins at different positions may be adjusted. In addition, in order to facilitate formation of air channels for flowing cooling air between the heat dissipation ribs 220 and the side walls of the battery cell 210, the direction in which the sheet bodies of the heat dissipation ribs 220 are arranged and the direction in which the side walls of the battery cell 210 are arranged are generally perpendicular to each other. When the number of the heat dissipation fins 220 disposed between the adjacent battery cells 210 is multiple, the positional relationship between the sheets of the heat dissipation fins 220 may be set according to the size of the disposed space and the heat dissipation requirement, for example: the fins of the plurality of fins 220 may be parallel to each other for space saving or alignment. Of course, the above-mentioned setting mode of the heat dissipation fin 220 under normal conditions is obviously that the heat dissipation fin 220 may also be set to a structure forming an included angle with the direction of the side wall of the battery cell 210, and all belong to the protection scope of the present invention. The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In the embodiment shown in fig. 1, three rows of the core packs 200 are provided on the base 100, and include a first row 001, a second row 002 and a third row 003 in order in a direction from near the inlet 110 to near the outlet 120. As can be seen from fig. 1, all the heat dissipation fins 220 arranged in the first row 001, the second row 002 and the third row 003 have the same fin area, and as shown in fig. 2, the number of the heat dissipation fins 220 arranged in the first row 001 close to the inlet 110 is 2, and the number of the heat dissipation fins 220 arranged in the second row 002 and the third row 003 sequentially is 3 and 4, and obviously, the number of the heat dissipation fins 220 arranged close to the inlet 110 is less than the number of the heat dissipation fins 220 arranged close to the outlet 120. The utility model discloses an foretell structure setting sets up the heat dissipation fin 220 that sets up different quantity between two adjacent electric cores 210 in every row of electric core group 200 respectively, between the heat dissipation fin 220 with all form wind channel 230 between the lateral wall place direction of electric core 210, set up fan or air conditioner in the energy storage battery subrack, send into the cooling air from entry 110, the inside of this energy storage battery subrack is flowed through wind channel 230. Because the number of the heat dissipation fins 220 in different rows is different, the total heat exchange area between the flowing cold air and the heat dissipation fins 220 is different, the number of the heat dissipation fins 220 between the battery cores 210 in the first row 001 is small, and the cooling air flows in from the middle of the heat dissipation fins and flows through the first row 001 first, so that the heat exchange area with the air is small; and the number of the heat dissipation ribs 220 located between the battery cells 210 in the second row 002 and the third row 003 is gradually increased, therefore, the heat exchange area with the air is increased, the contact area between the front row of electric core groups and the cooling air is reduced, the heat dissipation capacity of the front row of electric core groups is reduced, the temperature is relatively increased, then the contact area between the power core groups in the row and the cooling air is large, so that the temperature is relatively low, finally, the cooling capacity of the cooling air output from a fan or an air conditioner is equivalently sent to each electric core of the energy storage battery plug box, and the situation that each electric core at each position can obtain the same cooling capacity is ensured, can know through the simulation analysis method, the utility model discloses can realize that the difference in temperature between the different electric cores that are in each position in the energy storage battery box is < 1 ℃, effectively guarantee that the temperature of every electric core in the energy storage battery box can reach better homogeneity, make electric core obtain good cycle life.
As can be seen from the above, in the present embodiment, the number of the heat dissipation ribs 220 increases in a direction from the inlet 110 to the outlet 120. It should be noted that, in practical application, the rule of the change of the number of the heat dissipation fins 220 may be selected according to actual needs, and along the direction from the position close to the inlet 110 to the position close to the outlet 120, the number of the heat dissipation fins 220 may be increased or sequentially increased, as long as the effect that the total heat dissipation area of the heat dissipation fins 220 close to the inlet 110 is smaller than the total heat dissipation area of the heat dissipation fins 220 close to the outlet 110 can be achieved.
Example two
In the embodiment as shown in fig. 3 in combination with fig. 4, the number of the heat dissipation fins 220 between the cells 210 of each row of the electric core pack 200 disposed in the energy storage battery box is equal, and the heat dissipation fins 220 disposed in the first row 001, the second row 002 and the third row 003 are 2 fins, but the fin area of the heat dissipation fin 220 near the inlet 110 is smaller than the fin area of the heat dissipation fin 220 near the outlet 120. Similarly, the area of the fins of the heat dissipation fins 220 may be increased or sequentially increased along the direction from the inlet 110 to the outlet 120, and may be selectively arranged according to the actual requirement. Such as: the fin 220 that may be disposed adjacent to the inlet 110 has a fin area 1/3-1/2 of the fin 220 adjacent to the outlet 120; alternatively, the area of the heat dissipation fins 220 may be increased by about 10% for each row of the electric core assembly 200 along the direction from the inlet 110 to the outlet 120. The proportion that the area of the body of the heat dissipation fins 220 increases gradually and the overall structure size of the energy storage battery plug box, the distance between each row of the electric core groups 200 and the distance between the electric cores 210 in each electric core group 200 have a certain relationship, and the best setting result can be obtained through actual test and calculation.
The utility model discloses the second aspect provides an energy storage system, be in including box and setting battery subrack support in the box, be fixed with on the battery subrack support as above two embodiments the energy storage battery subrack. A large amount of heat can be released in the charging and discharging process of the lithium battery in the container. Cooling air released by a fan or an air conditioner is delivered into the battery pack through the air duct. The utility model discloses this energy storage battery subrack realizes that the inside electric core difference in temperature of energy storage subrack reduces through the structure setting to the heat dissipation fin piece of the aforesaid, guarantees the homogeneity of lithium cell temperature. The battery box solves the defects that the heat dissipation of a back row battery core is reduced and the temperature of the battery core is increased due to the fact that cold air flows to the back to exhaust air through the heat transfer with air convection between the battery cores of the existing energy storage battery box. Under the condition that the cooling air temperature rises gradually, the total heat exchange area of the battery cells is changed by fixing the quantity of the battery cells arranged between each row of the battery cells, gradually increasing the area of the sheet body or fixing the area of the sheet body and arranging the heat exchange fins with increased quantity, so that the heat dissipation capacity of each battery cell is relatively similar, the heat exchange capacity of the battery cells of the plug-in box is similar, the uniformity of the temperature of the battery cells is ensured, and the battery cells have good cycle life. Simulation analysis results show that the temperature difference between the electric cores arranged at different positions in the energy storage system is lower than 1 ℃, and the battery has great advantages compared with similar products. Therefore, the utility model discloses a better operational environment of difference in temperature is created to the lithium cell, can make the battery obtain better temperature homogeneity, creates the temperature condition for energy storage battery obtains the high cycle number.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. The utility model discloses an in the technical conception scope, can be right the utility model discloses a technical scheme carries out multiple simple variant, for example, can with the utility model discloses straight heat dissipation fin changes into the heat dissipation fin of buckling or bending in the above-mentioned embodiment, further increases heat dissipation fin's total heat radiating area. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. An energy storage battery plug box comprises a base (100) and a plurality of rows of electric core groups (200) fixed on the base (100), wherein each row of electric core group (200) comprises a plurality of electric cores (210) arranged at equal intervals, and is characterized in that heat dissipation fins (220) are arranged between every two adjacent electric cores (210); the energy storage battery plug box is internally provided with an inlet (110) and an outlet (120) for radiating cooling air, and the total heat dissipation area of the heat dissipation fins (220) in the electric core group (200) close to the inlet (110) is smaller than the total heat dissipation area of the heat dissipation fins (220) in the electric core group (200) close to the outlet (120).
2. The energy storage battery box according to claim 1, wherein all the heat dissipation ribs (220) arranged in the energy storage battery box have the same sheet area, and the number of the heat dissipation ribs (220) adjacent to the inlet (110) is smaller than the number of the heat dissipation ribs (220) adjacent to the outlet (120).
3. The energy storage battery compartment according to claim 2, characterized in that the heat dissipation ribs (220) are arranged in successively increasing amounts in a direction from adjacent to the inlet (110) to adjacent to the outlet (120).
4. The energy storage battery box of claim 3, characterized in that the number of the cell groups (200) is three, and the direction from the inlet (110) to the outlet (120) is sequentially a first row (001), a second row (002) and a third row (003), and the number of the heat dissipation fins (220) arranged between the cells (210) of the first row (001), the second row (002) and the third row (003) is sequentially 2, 3 and 4.
5. The energy storage battery box of claim 1, wherein the number of the heat dissipation ribs (220) between the cells (210) of each row of the cell pack (200) disposed in the energy storage battery box is equal, and the sheet area of the heat dissipation ribs (220) near the inlet (110) is smaller than the sheet area of the heat dissipation ribs (220) near the outlet (120).
6. The energy storage battery box according to claim 5, characterized in that the fin body area of the heat dissipation fins (220) increases in sequence in a direction from near the inlet (110) to near the outlet (120).
7. The energy storage battery box of claim 6, characterized in that the fin area of the heat dissipation fins (220) near the inlet (110) is 1/3-1/2 of the fin area of the heat dissipation fins (220) near the outlet (120).
8. The energy storage battery plug box of claim 1, characterized in that the direction of the body of the heat dissipation rib (220) is perpendicular to the direction of the side wall of the battery cell (210).
9. The energy storage battery plug box of claim 1, characterized in that the number of the heat dissipation ribs (220) between adjacent cells (210) is multiple.
10. An energy storage system, comprising a box body and a battery plug box support arranged in the box body, wherein the battery plug box support is fixed with an energy storage battery plug box according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020210575.7U CN211350906U (en) | 2020-02-25 | 2020-02-25 | Energy storage battery plug-in box and energy storage system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020210575.7U CN211350906U (en) | 2020-02-25 | 2020-02-25 | Energy storage battery plug-in box and energy storage system thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186310A (en) * | 2020-09-30 | 2021-01-05 | 蜂巢能源科技有限公司 | Battery cell temperature control method in battery compartment, storage medium and battery management system |
| CN112615095A (en) * | 2020-12-18 | 2021-04-06 | 上海融和元储能源有限公司 | Energy storage battery plug-in box and plug-in box group connection structure |
| CN113364027A (en) * | 2021-05-17 | 2021-09-07 | 华为技术有限公司 | Energy storage module, energy storage device and power generation system |
| CN114552065A (en) * | 2022-02-28 | 2022-05-27 | 西安热工研究院有限公司 | Liquid cooling energy storage lithium ion battery module |
| CN117250547A (en) * | 2023-11-20 | 2023-12-19 | 深圳市菲尼基科技有限公司 | Reliability evaluation method and system for battery energy storage system |
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2020
- 2020-02-25 CN CN202020210575.7U patent/CN211350906U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112186310A (en) * | 2020-09-30 | 2021-01-05 | 蜂巢能源科技有限公司 | Battery cell temperature control method in battery compartment, storage medium and battery management system |
| CN112615095A (en) * | 2020-12-18 | 2021-04-06 | 上海融和元储能源有限公司 | Energy storage battery plug-in box and plug-in box group connection structure |
| CN113364027A (en) * | 2021-05-17 | 2021-09-07 | 华为技术有限公司 | Energy storage module, energy storage device and power generation system |
| WO2022242600A1 (en) * | 2021-05-17 | 2022-11-24 | 华为数字能源技术有限公司 | Energy storage module, energy storage apparatus, and power generation system |
| CN113364027B (en) * | 2021-05-17 | 2023-10-10 | 华为数字能源技术有限公司 | Energy storage module, energy storage device and power generation system |
| CN114552065A (en) * | 2022-02-28 | 2022-05-27 | 西安热工研究院有限公司 | Liquid cooling energy storage lithium ion battery module |
| CN117250547A (en) * | 2023-11-20 | 2023-12-19 | 深圳市菲尼基科技有限公司 | Reliability evaluation method and system for battery energy storage system |
| CN117250547B (en) * | 2023-11-20 | 2024-04-02 | 深圳市菲尼基科技有限公司 | Reliability evaluation method and system for battery energy storage system |
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