CN217562658U - Partition plate structure of air duct of energy storage battery box and energy storage battery box - Google Patents

Abstract

The utility model discloses a baffle structure of an energy storage battery box air duct and an energy storage battery box, wherein the baffle structure is suitable for being placed at the bottom in the box body of the energy storage battery box and is arranged at intervals with the bottom plate to form the air duct, the bottom end of the end plate at one end of the box body in the length direction is provided with a plurality of air inlet holes communicated with the air duct, the baffle structure comprises a main body, and the upper surface of the baffle structure is implemented as a bearing surface for bearing a battery module; the air inlets are arranged on the main body at intervals along the length direction of the box body, any air inlet upwards penetrates through the bearing surface from one surface facing the air duct, the aperture of the air inlet close to the air inlet hole is larger than that of the air inlet far away from the air inlet hole along the direction from the air inlet hole to the air inlet hole, and the aperture of the middle air inlet is larger than that of the air inlets at two ends. The wind speed and the air volume of each air inlet are consistent, and the temperature of the wind at each air inlet is consistent, so that the consistency of the temperature of each battery cell in the battery module is ensured, and the service life of the battery module is prolonged.

Description

Partition plate structure of air duct of energy storage battery box and energy storage battery box

Technical Field

The utility model relates to an energy storage equipment technical field, concretely relates to baffle structure in energy storage battery case wind channel and have this baffle structure's energy storage battery case.

Background

With the development of the energy storage industry, battery systems based on secondary battery grouping are widely used. In the process of long-term operation of the energy storage battery, the electric core can generate heating phenomena in different degrees, and the air cooling design is generally adopted as the mainstream design mode of the heat management of the energy storage battery system in the existing design. The air-cooled design structure of the existing energy storage battery is simple, and cold air basically enters the battery box from a hole at the rear part of the battery box and passes through the side surface of the battery cell with higher temperature, so that the heat of the battery cell is taken away. However, the rear air inlet heat dissipation method still has some problems: the peripheral air volume of each battery cell is uncontrollable, the side face of the battery cell close to the main air duct has high air speed and large air volume, and thus the temperature of the battery cell is low. And the cold wind temperature of the air inlet at the rear is lower, and the cold wind passes through the heat transfer of the electric core at the rear row, and when the cold wind blows to the front row, the front wind temperature is higher and the heat dissipation effect is worse than the rear due to the heat absorption of the electric core at the rear row, thereby leading to the difference of the temperatures of the electric core at the front and the rear. Because the heat dissipation degree of each battery cell is different, the battery cell temperatures at different positions in the same system are different. In the past, the service life of the battery cell running in a high-temperature environment is shortened, and the storage capacity of the whole energy storage battery system is reduced. Therefore, there is a need for an improved air-cooled heat dissipation design for existing energy storage battery boxes.

SUMMERY OF THE UTILITY MODEL

To the technical problem that exists, the utility model provides a baffle structure and energy storage battery case in energy storage battery case wind channel has solved the different problems that lead to battery module energy storage capacity to reduce of the heat dissipation degree of every electric core in the battery module that the design of laggard wind heat dissipation caused among the prior art.

The technical scheme of the utility model is that:

an object of the utility model is to provide a baffle structure in energy storage battery case wind channel, baffle structure be suitable for place in energy storage battery case's box bottom and with the bottom plate of bottom half between the interval set up in order to form the wind channel, the bottom of the end plate of the length direction's of box one end seted up a plurality of with the communicating fresh air inlet in wind channel, baffle structure include:

a main body, an upper surface of which is implemented as a bearing surface for bearing the battery module;

the air inlets are arranged on the main body at intervals along the length direction of the box body and are random, one surface of the air inlet facing the air duct upwards penetrates through the bearing surface, the aperture of the air inlet close to the air inlet is larger than that of the air inlet far away from the air inlet along the direction from the air inlet to the air inlet, and the aperture of the middle air inlet is larger than that of the air inlets at two ends.

Preferably, any of the air inlets extends in a width direction of the case.

Preferably, the extension length of the air inlet close to the air inlet hole is smaller than that of the air inlet far away from the air inlet hole.

Preferably, the distance between the air inlet close to the air inlet hole and the first end plate provided with the air inlet hole is greater than the distance between the air inlet far away from the air inlet hole and the second end plate opposite to the first end plate.

Preferably, along the width direction of box, the baffle structure still includes the kink of locating respectively the width of main part both ends, the top face of kink is higher than the loading face.

Preferably, the bending part comprises a first vertical part and a first transverse part which are connected in sequence;

the first vertical part is connected with the main body;

the plate surface of the first transverse part is higher than the bearing surface, and a plurality of through holes are formed in the first transverse part.

Preferably, the bent portion further includes a second vertical portion and a second horizontal portion;

the plate surface of the second transverse part is lower than the bearing surface, and a plurality of fixing holes for the fasteners to penetrate through so as to fix the partition plate structure and the bottom plate of the box body are formed in the second transverse part.

Preferably, a plurality of supporting structures are arranged on one surface of the main body facing the air duct at intervals, and the supporting structures are at least hollow corresponding to the air inlet; and/or

The main body is further provided with two rows of positioning structures, the two rows of positioning structures are symmetrically distributed at two ends of the main body in the width direction, and each row of positioning structures are arranged at intervals along the length direction of the main body.

Another object of the utility model is to provide an energy storage battery box, including box, battery module and the above-mentioned arbitrary baffle structure.

Preferably, the box body is provided with an air suction hole on a second end plate opposite to the first end plate provided with the air inlet hole, the bottommost end position of the air suction hole is higher than the bearing surface, and an air suction fan is arranged at the air suction hole.

Compared with the prior art, the utility model has the advantages that:

the utility model discloses a baffle structure in energy storage battery box wind channel through the emulation design air intake for the wind speed and the unanimous and the temperature of the wind of each air intake department of air speed and air volume of every air intake are unanimous, thereby guarantee the uniformity of the temperature of each electric core in the battery module, prolong the life of battery module. The problem of among the prior art back wind heat dissipation design cause the different battery module energy storage capacity that leads to of the heat dissipation degree of every electric core in the battery module reduce is solved.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic perspective view of a partition structure of an air duct of an energy storage battery box according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of the energy storage battery box according to the embodiment of the present invention, in which the upper surface of the partition structure faces forward;

fig. 3 is a schematic structural diagram of a supporting structure of a partition structure of an air duct of an energy storage battery box according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of one of the viewing angles of the energy storage battery box according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of another view angle of the energy storage battery box according to the embodiment of the present invention;

fig. 6 is a schematic longitudinal sectional structure diagram of an energy storage battery box (battery module is omitted) according to an embodiment of the present invention;

FIG. 7 is an enlarged view of a portion A of FIG. 6;

fig. 8 is a schematic diagram of a transverse cutting structure of an energy storage battery box according to an embodiment of the present invention;

FIG. 9 is an enlarged view of a portion B of FIG. 8;

fig. 10 is a partially enlarged view of a portion C in fig. 8.

Wherein: 1. a partition plate; 11. a main body; 111. 111a-111d, air intakes; 112. a recessed portion; 12. a bending section; 121. a first vertical portion; 122. a first transverse portion; 1221. a through hole; 123. a second vertical portion; 124. a second transverse portion; 1241. grooving; 13. a support structure; 131. a first lateral support; 1311. a hollow-out section; 132. vertical support; 1321. a side through hole; 133. a second lateral support; 14. a fastener; 15. a positioning structure; 151. a first positioning member; 152. a second positioning member; 2. a box body; 21. a base plate; 22. a first end plate; 221. an air inlet hole; 23. a second end plate; 231. a ventilation hole; 3. an electric core; 31. the gap is cooled.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example (b):

referring to fig. 1 to 10, the partition board 1 of the embodiment of the present invention is suitable for being placed at the bottom inside the box body 2 of the energy storage battery box and spaced from the bottom board 21 at the bottom of the box body 2 to form an air duct, and a plurality of air inlet holes 221 communicating with the air duct are provided on the end board at one end of the length direction of the box body 2. Specifically, the utility model discloses a baffle 1 structure in energy storage battery case wind channel, including main part 11 and a plurality of air intake 111. The main body 11 is a flat plate that is matched with the bottom plate 21 of the case 2 and is disposed at an interval in an up-down direction, and an upper surface of the flat plate, that is, an upper surface of the main body 11, is implemented as a bearing surface for bearing the battery modules in the case 2. It should be noted that, the battery module in the box 2 includes that a plurality of electric cores 3 say the embodiment of the utility model provides a preferred four, four electric cores 3 set up with forming the cooling gap 31 that the confession cold wind passes through in order to carry out the forced air cooling heat dissipation to electric core 3 surface along the length direction of box 2 or the length direction interval between two liang of main part 11. In addition, it should be noted that the air inlets 111 on the main body 11 correspond to the cooling gaps 31, that is, any air inlet 111 at least partially overlaps the corresponding cooling gap 31. So that the cold air can better radiate and cool the electric cores 3 on two sides through the air inlet 111. In addition, the air inlets 111 are disposed on the main body 11 at intervals along the length direction of the box 2, i.e. the left-right direction shown in fig. 2, and any air inlet 111 penetrates the bearing surface from one surface facing the air duct to the top, and along the direction from the air inlet hole 221 to the side far from the air inlet hole 221, the aperture of the air inlet 111 near the air inlet hole 221, i.e. the right end shown in fig. 2, is larger than the aperture of the air inlet 111 far from the air inlet hole 221, i.e. the left end shown in fig. 2, and the aperture of the air inlet 111 in the middle is larger than the apertures of the air inlets 111 at the two ends. The design is to ensure that the air output and the air speed of all the air inlets 111 are consistent. More specifically, as shown in fig. 2, for convenience of distinction and description, the air inlet is sequentially expressed by an air inlet 111a, an air inlet 111b, an air inlet 111c and an air inlet 111d from the right to the left direction as shown in fig. 2, wherein the aperture of the air inlet 111b is the largest, and the aperture of the air inlet 111a and the aperture of the air inlet 111d are the smallest, which is the air inlet 111c. The aperture of each air inlet is not specifically described and limited, and a person skilled in the art can design the air inlet according to the flow channel simulation principle to ensure that the speed of cold air reaching each battery module is basically consistent. The utility model discloses baffle 1 structure, when the cooling, convulsions at the opposite side of fresh air inlet 221 through induced-draft fan (not shown), and wind is upwards taken out through air intake 111 by the bottom wind channel, and the wind of each air intake 111 position is unanimous with the temperature of the wind of fresh air inlet 221 position, that is to say the temperature of the wind of each air intake 111 department is unanimous to guarantee the uniformity of the temperature of each electricity core 3 in the battery module, prolong the life of battery module. The problem of among the prior art back wind heat dissipation design cause the different battery module energy storage capacity that leads to of the heat dissipation degree of every electric core in the battery module reduce is solved.

According to some embodiments of the present invention, as shown in fig. 2, any air inlet 111 extends along the width direction of the box body 2 or the main body 11. Preferably, the length of the air inlet 111a near the air inlet hole 221 is less than the length of the air inlet 111d far from the air inlet hole 221. The extension length of each air inlet 111 is not specifically described or limited, and those skilled in the art can design the air inlet according to the flow channel simulation principle to ensure that the speed of the cold air reaching each electric core 3 is substantially the same. As shown in fig. 2, the air inlet 111d has the longest extension length and is a whole segment, the air inlet 111b and the air inlet 111c are the second and are segments, and the shortest is the air inlet 111a and is a segment. In addition, the air inlet 111b is divided into three sections, and the extension length of the middle section is smaller than that of the two sections on the two sides, and similarly, the air inlet 111c is also divided into three sections, but the extension length of the middle section is different from that of the two sections on the two sides. The air inlet 111a is also divided into three sections, and the extension length of the middle section is far longer than that of the two sections at the two sides. In addition, two sides of the air inlet 111a, the air inlet 111b and the air inlet 111c, i.e., the upper side and the lower side as shown in fig. 2, are respectively provided with a fine air hole and a distance.

According to some embodiments of the present invention, as shown in fig. 2 to 4, the distance from the air inlet 111a close to the air inlet hole 221 to the first end plate 22 with the air inlet hole 221 opened therein is greater than the distance from the air inlet 111d far away from the air inlet hole 221 to the second end plate 23 opposite to the first end plate 23. As shown in fig. 2, a length L1 of the air inlet 111a from the right end of the main body 11 is greater than a length L2 of the air inlet 111d from the left end of the main body 11, for example, the length L1 of the air inlet 111a from the right end of the main body 11 is 2-3 times the length L2 of the air inlet 111d from the left end of the main body 11. The method is not limited, and those skilled in the art can obtain the simulation design.

According to some embodiments of the present invention, as shown in fig. 1 and fig. 2, along the width direction of the box body 2, two ends of the width of the main body 11 are respectively provided with a bending part 12, and the top end surface of the bending part 12 is higher than the carrying surface. Specifically, as shown in fig. 1, the bending portion 12 includes a first vertical portion 121, a first horizontal portion 122, a second vertical portion 123 and a second horizontal portion 124, which are connected in sequence, the first vertical portion 121 is connected with the main body 11, a plate surface of the first horizontal portion 122 is higher than the bearing surface, and a plurality of through holes 1221 are formed in the first horizontal portion 121. The arrangement of the through hole 1221 can further upwards pump the cold air in the air duct from the air duct to cool the outer surface of the electric core 3 facing the long side of the box 2 (the cold air of the air inlet cools the facing surfaces of the electric core 3, that is, the surfaces facing the wide side of the box 2), so as to further improve the cooling effect. The second transverse portion 124 has a lower surface than the carrying surface, and the second transverse portion 124 has a plurality of fixing holes (not shown) for fasteners 14, such as bolts, to pass through so as to fix the structure of the partition board 1 to the bottom plate 21 of the box body 2. The fixing and installation between the partition board 1 and the bottom board 21 can be facilitated, and the fixing firmness is improved. As an alternative embodiment, the bent portion 12 may also include only the first vertical portion 121 and the first horizontal portion 122, that is, the partition board 1 is in an inverted "shape. Alternatively, as shown in fig. 1 and 2, the second transverse portion 124 is provided with slots 1241 at intervals, so as to reduce the weight of the partition board 1. Preferably, the partition board 1 is of an integrally molded structure. That is, the main body 11 and the bending portion 12 are integrally formed, for example, by die-casting and bending a sheet metal part.

According to the utility model discloses some preferred embodiments, in order to further improve baffle 1's support intensity and ensure the structure in wind channel, the interval is equipped with a plurality of bearing structure 13 in the one side in the wind channel of main part 11 orientation, corresponds air intake 111 position fretwork on bearing structure 13 at least. Specifically, as shown in fig. 1, a plurality of support structures 13 are disposed at intervals on the bottom of the main body 11 along the width direction of the main body 11 or the width direction of the box body 2. As shown in fig. 3, the supporting structure 13 is shaped like a Chinese character ji, specifically, the supporting structure 13 is composed of a first horizontal support 131, two vertical supports 132 and two second horizontal supports 133, and a hollow portion 1311 formed at a position corresponding to the air inlet 111 on the first horizontal support 131 and used for allowing cold air to enter the air inlet upwards is hollowed out. The longitudinal direction of the support structure 13 coincides with the longitudinal direction of the main body 11 or the longitudinal direction of the cabinet 2. Preferably, in order to facilitate the cool air to smoothly enter the air inlet 111 from the air duct through the hollow portion 1311, a row of side through holes 1321 is further provided on each vertical support 132. According to some further preferred embodiments of the present invention, two rows of positioning structures 15 are further provided on the side of the main body 11 facing the air duct. As shown in fig. 6 to 10, two rows of positioning structures 15 are symmetrically distributed at two ends of the main body 11 in the width direction, and each row of positioning structures 15 is arranged at intervals along the length direction of the main body 11. Specifically, as shown in fig. 10, the positioning structure 15 includes a first positioning element 151 and a second positioning element 152, a concave portion 112 that is recessed from the bearing surface toward one side of the air duct is disposed on the main body 11, a bottom surface of the concave portion 112 is through, the second positioning element 152 is a screw, and passes through a through position on the concave portion 112 to be connected with the first positioning element 151 disposed on a surface of the main body 11 that faces the air duct, that is, on a lower surface of the main body 11, the first positioning element 151 is a positioning column with an internal threaded hole, and a bottom end of the first positioning element 151 abuts against an upper surface of the bottom plate 21 to support and position the partition board 1. As an alternative embodiment, only one of the support structure 13 and the positioning structure 15 may be provided.

The embodiment of the utility model provides a still include an energy storage battery box, including box 2, battery module and the partition structure of above-mentioned embodiment. As shown in fig. 8, along the length direction of the box 2, the battery module includes four electric cores 3, the four electric cores 3 are placed at intervals and fixed on the main body 11 of the partition board 1, and a cooling gap 31 is formed between any two adjacent electric cores 3, and the air inlets 111 on the corresponding main body 11 correspond to the cooling gaps 31 one by one, that is, the number of the air inlets is also four. As shown in fig. 4, a row of air inlet holes 221 are formed in the rear end plate of the box 2, i.e., the bottom of the first end plate 22, at intervals along the width direction of the box 2, and the air inlet holes 221 correspond to the intervals between the partition plate 1 and the bottom plate 21, i.e., the air ducts. As shown in fig. 5, the front end plate of the box body 2, that is, the second end plate 23, is provided with the air exhaust hole 231, the bottommost position of the air exhaust hole 231 is higher than the main body 11 of the partition plate 1, that is, higher than the air inlet 111, optionally, the air exhaust hole 231 is arranged at the middle position of the second end plate 23, and an air exhaust device such as an air exhaust fan (not shown) is arranged at the position of the air exhaust hole 231, so that cold air is uniformly cooled through the air inlet 111 by the bottom air duct, and then the surface of each electric core 3 of the battery module is extracted from the air exhaust hole 231, thereby realizing air-cooled heat dissipation of the battery module. Owing to adopted the diaphragm structure of above-mentioned embodiment, so have the beneficial effect of above-mentioned diaphragm structure, also the speed that cold wind arrives every electric core 3 is unanimous basically, and the temperature of the wind of each air intake 111 department is unanimous to guarantee the uniformity of the temperature of every electric core 3 of battery module, prolong the life of battery module.

It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.

Claims (10)

1. The utility model provides a baffle structure in energy storage battery case wind channel, its characterized in that, baffle structure be suitable for place in energy storage battery case the box bottom and with the bottom plate of bottom half between the interval set up in order to form the wind channel, the bottom of the end plate of the length direction's of box one end seted up a plurality of with the communicating fresh air inlet in wind channel, baffle structure include:

a main body, the upper surface of which is implemented as a bearing surface for bearing the battery module;

the air inlets are arranged on the main body at intervals along the length direction of the box body and are random, one face of the air inlet facing the air channel upwards penetrates through the bearing surface, the aperture of the air inlet close to the air inlet is larger than the aperture of the air inlet far away from the air inlet, and the aperture of the middle air inlet is larger than the apertures of the air inlets at two ends.

2. The partition structure of an air duct of an energy storage battery box according to claim 1, wherein any air inlet extends along the width direction of the box body.

3. The partition structure of an air duct for energy storage battery box according to claim 2, wherein the length of the air inlet near the air inlet hole is less than the length of the air inlet far from the air inlet hole.

4. The partition structure of the air duct of the energy storage battery box according to claim 3, wherein the distance from the air inlet close to the air inlet hole to the first end plate provided with the air inlet hole is longer than the distance from the air inlet far from the air inlet hole to the second end plate opposite to the first end plate.

5. The partition structure of an air duct for energy storage battery boxes according to claim 1, wherein along the width direction of the box body, the partition structure further comprises bending portions respectively disposed at two ends of the width of the main body, and top end surfaces of the bending portions are higher than the bearing surface.

6. The partition plate structure of the air duct of the energy storage battery box according to claim 5, wherein the bending portion comprises a first vertical portion and a first transverse portion which are sequentially connected;

the first vertical part is connected with the main body;

the plate surface of the first transverse part is higher than the bearing surface, and a plurality of through holes are formed in the first transverse part.

7. The partition structure of an air duct for energy storage battery boxes according to claim 6, wherein the bending portion further comprises a second vertical portion and a second horizontal portion;

the plate surface of the second transverse part is lower than the bearing surface, and a plurality of fixing holes for the fasteners to penetrate through so as to fix the partition plate structure and the bottom plate of the box body are formed in the second transverse part.

8. The partition structure of the air duct of the energy storage battery box according to claim 7, wherein a plurality of supporting structures are arranged on one surface of the main body facing the air duct at intervals, and the supporting structures are at least hollowed out corresponding to the air inlets; and/or

The main body is further provided with two rows of positioning structures, the two rows of positioning structures are symmetrically distributed at two ends of the main body in the width direction, and each row of positioning structures are arranged at intervals along the length direction of the main body.

9. An energy storage battery box, characterized by comprising a box body, a battery module and the separator structure of any one of claims 1 to 8.

10. The energy storage battery box of claim 9, wherein a second end plate of the box body opposite to the first end plate provided with the air inlet hole is provided with an air exhaust hole, the lowest end of the air exhaust hole is higher than the bearing surface, and an air exhaust fan is arranged at the air exhaust hole.

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