CN218731235U

CN218731235U - Energy storage box

Info

Publication number: CN218731235U
Application number: CN202222337958.2U
Authority: CN
Inventors: 舒心
Original assignee: Jinbaoli Jiangsu New Energy Technology Co ltd
Current assignee: Jinbaoli Jiangsu New Energy Technology Co ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-03-24
Anticipated expiration: 2032-09-02

Abstract

The utility model discloses an energy storage box, including the box that is formed with accommodation space, the box includes two at least cooling bottom plate, cooling bottom plate includes inlet, liquid outlet and intercommunication the cooling runner of inlet and liquid outlet, wherein, the cooling runner is set up to: the area of the flow area of the cooling liquid flowing in from the liquid inlet and flowing out from the liquid outlet is equal to the area of the cooling bottom plate. The utility model discloses be provided with two piece at least cooling bottom plate, adopt the cooling structure of "two advances two plays", can shorten the stroke and the circulation time of coolant liquid, improve the cooling effect of energy storage box.

Description

Energy storage box

Technical Field

The utility model relates to an energy storage field especially relates to a lightweight energy storage box.

Background

With the rapid development of economy, the demand of various industries on electricity is increasing. At present, box energy storage products are developed gradually, urgent needs are provided for improving the energy density of box energy storage, and liquid cooling can improve the energy density of box energy storage and can ensure the temperature consistency of electric cores.

The box of energy storage box among the prior art uses metal casing sheet metal construction more, and weight is great and the cost is higher relatively, and the radiating mode is mainly bottom liquid cooling heat dissipation more simultaneously, but the radiating effect is not good, leads to the unable high magnification operation of incasement battery temperature nonconformity.

Therefore, there is a need in the art for an energy storage box with improved heat dissipation and a lightweight box.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an energy storage box, it has the radiating effect of improvement and more lightweight box.

In order to achieve the above object, an embodiment of the present invention provides an energy storage box, including the box that is formed with accommodation space, the box includes two at least cooling bottom plates, cooling bottom plate includes inlet, liquid outlet and intercommunication the cooling runner of inlet and liquid outlet, wherein, the cooling runner is set up to: the area of the flow area of the cooling liquid flowing in from the liquid inlet and flowing out from the liquid outlet is equal to the area of the cooling bottom plate.

In one or more embodiments of the present invention, the cooling flow channel includes a first flow direction section and a second flow direction section having opposite flow guiding directions, and the first flow direction section and the second flow direction section respectively include a flow guiding barrier arranged along the flow guiding direction thereof.

The utility model discloses an in one or more embodiments, the box still includes the end plate, the end plate includes end plate body and end plate reinforcing plate, the end plate body includes the barrier plate and encloses and close the enhancement frame of barrier plate, the end plate reinforcing plate including can with the first installation position of barrier plate laminating and with the barrier plate has the second installation position of interval, the end plate reinforcing plate adjustably assemble in first installation position or second installation position.

In one or more embodiments of the present invention, the cooling floor is an open-ended multi-cavity profile, the reinforcing frame of the end plate further comprises a plug strip that can be fitted to the open-ended of the cooling floor, the plug strip and the cooling floor being friction stir welded.

In one or more embodiments of the present invention, the end plate includes a front end plate, the energy storage box further includes a panel that can be assembled to the front end plate deviates from the accommodating space on one side.

In one or more embodiments of the present invention, the inlet and the outlet of the at least two cooling bottom plates are both disposed near one side of the front end plate.

In one or more embodiments of the present invention, the box further includes a side plate connected between the end plates, the side plate is a multi-cavity profile, and the side plate is welded and fixed to the cooling bottom plate.

In one or more embodiments of the present invention, the side plate is welded and fixed to the reinforcing frame of the end plate.

In one or more embodiments of the present invention, a compartment plate for dividing the accommodating space is provided in the box body, and the compartment plate is welded and fixed to the cooling bottom plate.

The utility model discloses an in one or more embodiments, the compartment board will accommodation space cuts apart into two at least electric core cabins, the box include with two at least roofs that two at least electric core cabins correspond.

Compared with the prior art, according to the utility model discloses embodiment's energy storage box has set up two piece at least cooling bottom plate in the bottom, all has the cooling runner in every cooling bottom plate, has reduced the stroke of the cooling liquid in the list cooling runner, has improved holistic cooling effect, has used the multi-chamber section bar simultaneously in order to reduce holistic weight.

Drawings

Fig. 1 is a block diagram of an energy storage tank according to an embodiment of the present invention;

FIG. 2 is a block diagram of a cooling plate according to an embodiment of the present invention;

fig. 3 is a block diagram of a rear end plate according to an embodiment of the present invention;

fig. 4 is a schematic view of a rear endplate stiffener plate in a first installation position in accordance with an embodiment of the present invention;

fig. 5 is a schematic view of a rear endplate stiffener plate in a second installation position in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of a rear end plate coupled to a cooling floor according to an embodiment of the present invention;

fig. 7 is a structural view of a front end plate according to an embodiment of the present invention.

Description of the main reference numerals:

100-an energy storage box, 10-a cooling bottom plate, 11-a cooling flow channel, 12-a flow guide grid, 13-a liquid inlet, 14-a liquid outlet, 20-a side plate, 30-a front end plate, 31-a front end plate body, 32-a front end plate reinforcing plate, 33-a panel, 34-a channel, 35-a water nozzle, 40-a rear end plate, 41-a rear end plate body, 411-a blocking plate, 412-a reinforcing frame, 413-a plug strip, 42-a rear end plate reinforcing plate, 50-a top plate and 60-a compartment plate.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 1, the energy storage box 100 according to an embodiment of the present invention includes a box body. The box defines the overall appearance of energy storage box 100, is formed with accommodation space in the box to this accommodation space can be used for installing the electric core of different specifications. In the present embodiment, the casing includes a cooling bottom plate 10, and the electric core mounted in the housing space is cooled by the cooling bottom plate 10.

Exemplarily, the battery cell may include a lithium ion secondary battery cell, a lithium ion primary battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, a magnesium ion battery cell, or the like. The battery cell can be in a cylinder, a flat body, a cuboid or other shapes and the like. The cells are generally divided into three types according to the packaging mode: the battery pack comprises a cylindrical battery monomer, a square battery monomer and a soft package battery monomer. The embodiment of the utility model provides a do not do the restriction to the concrete form of above electric core.

In this embodiment, the tank body of the energy storage tank 100 may be integrally constructed by a profile, specifically, may be surrounded by the cooling bottom plate 10, the side plate 20, the front end plate 30, the rear end plate 40, and the top plate 50, and the number of the cooling bottom plate 10 at least includes two.

The battery cell is sensitive to the ambient temperature, and along with the development of the technology, the energy density of the battery cell is larger and larger, and more heat can be generated in the charging and discharging process. The long-term work can reduce the life of electric core under high temperature environment, and more serious probably produces the danger of leaking or even catching fire and exploding, consequently needs the energy storage box can do continuous control by temperature change to electric core wherein. One conceivable way is to provide a cooling base plate in conjunction with the cell.

The cooling base plate 10 includes a liquid inlet 13, a liquid outlet 14, and a cooling flow channel 11 connected between the liquid inlet 13 and the liquid outlet 14. During the use, can insert the coolant liquid from cooling bottom plate 10's inlet 13, the coolant liquid flows along cooling channel 11 to produce the heat exchange with cooling bottom plate 10 complex electric core, finally discharge from cooling bottom plate 10's liquid outlet 14 through the coolant liquid of heat exchange and intensification, thereby realize the control by temperature change to electric core.

In the present embodiment, the cooling flow channel 11 may be provided as: the flow area of the cooling liquid flowing in from the liquid inlet 13 and flowing out from the liquid outlet 14 is made equal to the area of the cooling base plate 10. Therefore, the cooling liquid can fully exchange heat with the battery core matched with the cooling bottom plate 10, and the cooling efficiency of the cooling bottom plate 10 is improved.

As shown in fig. 2, the cooling flow channels 11 may be in particular of a circuitous arrangement, for example S-shaped. In such an arrangement, the cooling flow channels 11 have opposite first and second flow directions, as indicated by the arrows in fig. 2. The first flow direction and the second flow direction are parallel to the length direction of the cooling plate 10, and it is easy to conceive that the first flow direction and the second flow direction may be perpendicular to the length direction of the cooling plate 10 in other embodiments.

A flow guiding barrier 12 arranged along the flow guiding direction is formed in the cooling flow channel 11, and the flow guiding barrier 12 can guide the cooling liquid in the cooling flow channel 11 to move along the flow guiding direction and can more uniformly flow through the cooling flow channel 11 in the flow guiding direction. Accordingly, the length of the cooling flow channel 11 can be set to be shorter for the same flow area, that is, the flow path of the cooling liquid is shortened, so that the cooling liquid does not absorb too much heat due to too long flow time, which causes a higher temperature at the rear section of the cooling flow channel 11, thereby reducing the cooling effect of the cooling floor 10.

Generally, the cooling bottom plate 10 is designed as a whole, and has a channel structure of "single inlet and single outlet", and the cooling liquid may absorb too much heat at the rear section of the channel due to long circulation time, so that the temperature of the cooling liquid itself is high, resulting in poor cooling effect at the rear section. Therefore, in this embodiment, two cooling bottom plates 10 are adopted, and a "double-inlet and double-outlet" cooling structure is adopted, so that the stroke and the circulation time of the cooling liquid are shortened, and the cooling liquid does not absorb too much heat due to too long circulation time, and the cooling effect is reduced due to too high temperature when the cooling liquid flows through the rear section of the cooling flow channel 11, so that the temperature difference in the whole box body is not too large, and a better cooling effect is achieved.

It is easy to think that in other embodiments, three or more cooling floors 10 can be used to reduce the width of the cooling floors 10 and further improve the cooling effect. Further, the number of cooling floors 10 can be determined according to production needs, and the modular design helps to reduce costs.

The cooling bottom plate 10 may be formed by welding plates to form a cooling flow channel 11 structure, but there may be problems that the cooling flow channel 11 structure is compact, the welding difficulty is large, and it is difficult to ensure the air tightness. In this embodiment, referring to fig. 2, the cooling bottom plate 10 is directly formed by extruding a multi-cavity profile, and the cooling flow channel 11 is directly formed in the inner cavity of the profile, so that the processing is convenient and fast, and the production cost is greatly reduced.

Energy storage box 100 includes front end plate 30 and rear end plate 40, refer to the rear end plate 40 that fig. 3 shows, including rear end plate body 41 and rear end plate reinforcing plate 42, rear end plate body 41 still includes baffle 411 and reinforcing frame 412 all around, and rear end plate reinforcing plate 42 uses multi-chamber section bar equally, contains a plurality of hollow chambeies in it, and reinforcing frame 412 both sides also are hollow out construction, can reduce holistic weight when guaranteeing to be firm, and is preferred, and rear end plate reinforcing plate 42 passes through the bolt and fixes with rear end plate body 41.

As shown in fig. 4, the rear end plate reinforcing plate 42 is embedded in the rear end plate body 41 and closely attached to the stopper plate 411, and the rear end plate reinforcing plate 42 is in the first mounting position. Referring to fig. 5, the rear end plate reinforcing plate 42 has a gap with the blocking plate 411, and the rear end plate reinforcing plate 42 is in the second installation position.

When the rear end plate reinforcing plate 42 is located at the first installation position, the rear end plate reinforcing plate 42 tightly attached to the blocking plate 411 can prevent the blocking plate 411 from deforming towards the direction of the rear end reinforcing plate 42, and the blocking plate 411 can tightly push the internal battery cell to prevent the battery cell from loosening. When the rear end plate reinforcing plate 42 is located at the second installation position, due to the existence of the gap between the rear end plate reinforcing plate 42 and the blocking plate 411, a certain displacement space can be provided for the electric cores in the box body, and the tightness and the gap of assembly among the electric cores can be conveniently adjusted.

It should be understood that the second mounting position is not a fixed position, and the rear end plate reinforcing plate 42 and the blocking plate 411 have a certain gap therebetween, and the gap can be adjusted to limit the rear end plate reinforcing plate 42 to be located at a different second mounting position.

Specifically, the fixing of the rear end plate reinforcing plate 42 and the blocking plate 411 may use a snap, a bolt, or other forms, wherein the position of the rear end plate reinforcing plate 42 may be steplessly adjusted using the bolt. Therefore, in this embodiment, it is preferable to fix the rear end plate reinforcing plate 42 and the blocking plate 411 by bolts. The tightness of the adjusting bolt can be adjusted to enable the rear end plate reinforcing plate 42 to be located at the first installation position or the second installation position, so that the tightness and the gap of assembly between the battery cores can be adjusted, and the assembly and disassembly are facilitated.

As shown in fig. 6, the bottom of the rear end plate reinforcing frame 412 is provided with the plugging strips 413, and the plugging strips 413 are embedded into the cooling base plate 10 during assembly, so that the sealing effect can be improved, the cooling liquid cannot overflow at the first time even when leakage occurs, the overflow speed is slower than that when no plugging strips 413 exist, and the maintenance by workers is facilitated. Meanwhile, the joint of the reinforcing frame 412 and the cooling bottom plate 10 is welded, a friction stir welding process is preferably adopted, the welding material is not needed, the cost is low, high temperature and harmful gas cannot be generated, the sealing effect is good, the IP 68-level sealing effect can be achieved, namely, foreign matters including dust and liquid are completely prevented from passing through, and the damage to the battery cell caused by the overflow of the cooling liquid can be effectively prevented.

Referring to fig. 7, the front end panel 30 includes a front end panel body 31 and a front end panel reinforcement plate 32, and a panel 33 directly fixed to the front end panel body 31, on which instructions for use or contents of publicity, etc. can be provided. Easily think about, when the current panel is in the position that can't directly observe, also can set up a panel in back end board department, realize explanation, propaganda or other effects, improved holistic expansibility.

It is easily conceivable that the front end plate 30 also has a first mounting position and a second mounting position, and the adjustable front end plate reinforcing plate 32 is located at the first mounting position or the second mounting position so as to adjust the tightness and the gap of assembly between the cells. Here, the front end plate mounting plate and the front end plate may be mounted and fixed in the manner described above with reference to the rear end plate 40, and details thereof are not described herein.

Referring to fig. 2 and 7, the liquid inlet 13 and the liquid outlet 14 are both located on the side of the cooling baseplate 10 close to the front end plate 30. The bottom of the front end plate 30 is also provided with a plug strip 413 and is embedded into the cooling bottom plate 10, and the plug strip is welded by a friction stir welding process to achieve an IP68 sealing effect and prevent the electric core from being damaged by overflowing of the cooling liquid. Meanwhile, a channel 34 is arranged on the front end plate body 31 corresponding to the liquid inlet 13 and the liquid outlet 14, and a water nozzle 35 is arranged to facilitate the input and output of the cooling liquid. And panel 33 can provide protection for water nozzle 35 to prevent damage caused by improper operation colliding with water nozzle 35.

In the present embodiment, since the thickness of each plate is small, it is preferable to connect the side plates 20 to the cooling floor 10 and the front and

rear end plates

30 and 40 by means of automatic CMT welding or manual TIG welding, and the welding has small post-welding deformation, uniform and consistent weld seams, high welding speed and low cost.

Referring to fig. 1, a compartment plate 60 is disposed in a box body of an energy storage box 100, the compartment plate 60 divides the box body into a plurality of cell compartments, and the compartment plate 60 and the cooling bottom plate 10 are welded and fixed by means of CMT automatic welding or manual TIG welding. In other embodiments, the compartment plate 60 may be secured to the side panels 20 or the front and

rear end panels

30, 40 to facilitate replacement of the cooling floor 10. It is easily conceivable that the compartment plate 60 may be movably disposed without being fixed to the cooling floor 10, the side plate 20, the front end plate 30, or the rear end plate 40.

In the present embodiment, the compartment plate 60 divides the accommodating space in the case into at least two cell compartments. When the compartment plate 60 is movably arranged, the cell compartment is changed in size to adapt to cells with different sizes. In this embodiment, a plurality of top plates 50 are arranged at the top of the energy storage box 100, each top plate 50 corresponds to and covers one battery cell compartment, and the corresponding top plate 50 is only required to be operated when a single battery cell is operated, so that the operation of a worker is facilitated.

In this embodiment, in order to realize physical isolation between cells, the compartment plate 60 and the top plate 50 are preferably made of insulating materials, so as to prevent leakage of cells and even influence other cells when fire breaks out, thereby improving the overall safety.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. The utility model provides an energy storage box, its characterized in that, including the box that is formed with accommodation space, the box includes two at least cooling bottom plate, cooling bottom plate includes inlet, liquid outlet and intercommunication the cooling runner of inlet and liquid outlet, wherein, the cooling runner is set up to: the area of the flow area of the cooling liquid flowing in from the liquid inlet and flowing out from the liquid outlet is equal to the area of the cooling bottom plate.

2. An energy storage tank as claimed in claim 1 wherein the cooling flow path comprises first and second flow sections having opposite flow directing directions, the first and second flow sections each comprising flow directing louvers arranged along their flow directing directions.

3. The energy storage tank of claim 2, wherein the tank body further comprises an end plate, the end plate comprises an end plate body and an end plate reinforcing plate, the end plate body comprises a blocking plate and a reinforcing frame surrounding the blocking plate, the end plate reinforcing plate comprises a first mounting position attached to the blocking plate and a second mounting position spaced from the blocking plate, and the end plate reinforcing plate is adjustably mounted at the first mounting position or the second mounting position.

4. The energy storage tank of claim 3 wherein said cooling floor is an open-ended multi-cavity profile, said reinforcing frame of said end plate further comprising a filler plug mateable with said open-ended cooling floor, said filler plug and said open-ended cooling floor being friction stir welded.

5. A tank according to claim 3 wherein the end plate comprises a front end plate, the tank further comprising a panel mountable to the front end plate on a side facing away from the receiving space.

6. An energy storage tank as claimed in claim 5 wherein the liquid inlet and outlet of the at least two cooling floors are both located adjacent one side of the front end plate.

7. The energy storage tank of claim 3, wherein said tank body further comprises side plates connected between a pair of said end plates, said side plates being multi-cavity profiles, said side plates being welded to said cooling floor.

8. An energy storage tank as claimed in claim 7 wherein the side plates are welded to the reinforcing frames of the end plates.

9. The energy storage box of claim 1, wherein a compartment plate for partitioning the accommodating space is arranged in the box body, and the compartment plate is welded and fixed with the cooling bottom plate.

10. The energy storage tank of claim 9, wherein the compartment plate divides the accommodation space into at least two cell compartments, and the tank body includes at least two top plates corresponding to the at least two cell compartments.