Battery tray and formation and capacity grading device

Abstract

The utility model relates to the technical field of batteries, and particularly provides a battery tray and a formation and capacity grading device. The battery tray comprises an outer frame containing at least one column of batteries, an air uniformizing component is arranged in the outer frame and comprises an air inlet and air outlets which are at least located in one side of each column of batteries and blow air towards the batteries, and the air outlets extend or are distributed in the arrangement direction of the batteries in the same column of batteries so that the batteries can be located in blowing areas of the air outlets. According to the battery tray provided by the invention, all the batteries in the tray are uniformly blown, the heat dissipation efficiency is high, the heat dissipation difference among all the batteries in the tray can be reduced, the overall temperature uniformity of all the batteries can be improved, and for a single battery, the temperature uniformity of the upper part and the lower part of the battery can also be improved by blowing air from the side surface to dissipate heat; the problem that in the prior art, heat dissipation of all the batteries in the tray is not uniform, and consequently the temperature uniformity is affected is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery tray and a battery capacity dividing device. Background Art

[0002] Formation and capacity separation are important processes in the production of lithium-ion batteries, and play a vital role in the quality of battery performance. Formation is the first charge of the battery after injection, and the solid electrolyte interface film (SEI film) is formed during the charging process. Capacity separation is the process of charging and discharging the activated battery at full load, screening the capacity of the battery, and thus determining the grade of the lithium battery.

[0003] During the battery capacity splitting process, there are high requirements for the battery temperature rise and temperature uniformity, so it is usually necessary to dissipate the heat of the battery for temperature control. And the temperature uniformity of the battery has a great influence on the performance of the produced battery. If the temperature uniformity of the battery is poor, the performance of the final produced battery will also be poor. However, during the capacity splitting process, generally multiple batteries are arranged and placed in a battery tray to implement charging and discharging operations, and several through holes are opened on the tray for heat dissipation. In this heat dissipation structure, some batteries in the tray dissipate heat quickly and some dissipate heat slowly, and the temperature uniformity between them is not high. In addition, due to the high heat generation at the battery pole, for a single battery, it is also easy for the temperature of the upper part of the battery to be higher than that of the bottom of the battery. Utility Model Content

[0004] In view of this, an embodiment of the present application is directed to providing a battery tray on which a uniform air flow component is provided to improve the heat dissipation uniformity of the battery, so as to solve the problem in the prior art that uneven heat dissipation of the batteries in the tray affects the temperature uniformity.

[0005] The present application provides a battery tray, comprising an outer frame accommodating at least one column of batteries, wherein a uniform wind component is arranged inside the outer frame, wherein the uniform wind component comprises an air inlet and an air outlet located at least on one side of each column of batteries and blowing air toward the batteries, wherein the air outlet extends or is arranged along the arrangement direction of the batteries in the same column so that each battery is within the blowing area of ​​the air outlet.

[0006] In a possible implementation, the uniform wind component includes a uniform wind cavity located at least on one side of each column of batteries and extending along the arrangement direction of the batteries in the same column, and the air outlet is provided on a side wall of the uniform wind cavity facing the batteries.

[0007] In a possible embodiment, the air outlets are arranged in a plurality of rows in the height direction of the outer frame, and the air outlets in each row extend along the arrangement direction of the batteries in the same column, or the air outlets in each row include a plurality of branch outlets distributed along the arrangement direction of the batteries in the same column; or, in the arrangement direction of the batteries in the same column, the air outlets are arranged in a plurality of intervals, and each of the air outlets has an extended length in the height direction of the outer frame.

[0008] In a possible implementation manner, the air inlet of the air uniformity chamber is provided on the bottom plate of the outer frame so as to take in air from below the outer frame, and the air inlet extends along the arrangement direction of the batteries in the same row of batteries.

[0009] In a possible embodiment, the uniform air chamber has a tapered structure along the direction from the bottom to the top of the outer frame, and the space inside the chamber gradually decreases; or, along the height direction of the outer frame, the side wall of the uniform air chamber facing the battery has a recessed portion and a raised portion, and the air outlet is arranged on the recessed portion to have a distance from the side of the battery.

[0010] In a possible implementation manner, along the direction from the bottom to the top of the outer frame, the side wall of the air uniformity chamber is in a gradually inclined slope structure or a gradually recessed step-like structure.

[0011] In a possible embodiment, the outer frame has a plurality of protrusions extending along the first direction and arranged along the second direction, the protrusions form the uniform wind component, the protrusions are hollow structures and the internal hollow cavity forms the uniform wind chamber, and a slot space for accommodating a row of batteries is formed between each two adjacent protrusions.

[0012] In a possible implementation manner, a limiting structure for fixing each battery is further provided in the outer frame.

[0013] In a possible implementation, the limiting structure includes a plurality of first limiting blocks arranged at intervals along the arrangement direction of the batteries and located between every two adjacent batteries, and / or second limiting blocks distributed on both sides of each of the batteries.

[0014] The present application also provides a battery packing device, comprising a battery packing cabinet, a battery packing cavity arranged on the battery packing cabinet, and a battery tray for being arranged in the battery packing cavity, wherein the battery tray is a battery tray as described in any of the above items.

[0015] According to the battery tray provided by the present application, the wind uniformity component provided thereon sets the air outlet on the side of the battery, and blows air from the side of the battery to the battery, which can cool the entire battery more evenly than blowing air upward from the bottom, and reduce the temperature difference between the upper and lower parts of the battery; and the air outlet is arranged along the arrangement direction of the battery, so that each battery is in the blowing area of ​​the air outlet, or it can be said that the side of each battery is facing the blowing area, so that the heat dissipation efficiency can be improved, and the airflow blown by the fan can be blown evenly to each battery in the tray, improving the uniformity of each battery being blown by the wind, and improving the heat dissipation uniformity of each battery in the tray. It can be seen that the battery tray provided by the present application allows each battery in the tray to be blown evenly, with high heat dissipation efficiency, can reduce the heat dissipation difference between each battery in the tray, improve the overall temperature uniformity of all batteries, and for a single battery, blowing air from the side for heat dissipation can also improve the temperature uniformity of the upper and lower parts of the battery, effectively solving the problem of uneven heat dissipation of each battery in the tray in the prior art, which affects the temperature uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is an overall schematic diagram of a battery tray in an embodiment of the present application;

[0017] Figure 2 The figure shows a schematic diagram of a battery tray with batteries placed therein in an embodiment of the present application;

[0018] Figure 3 The first schematic diagram of the wind uniformity component in the embodiment of the present application is shown;

[0019] Figure 4 The second schematic diagram of the wind uniforming component in the embodiment of the present application is shown;

[0020] Figure 5 The third schematic diagram of the wind uniformity component in the embodiment of the present application is shown;

[0021] Figure 6 Shown is a fourth schematic diagram of the wind uniforming component in the embodiment of the present application.

[0022] Figure 1-6 middle:

[0023] 1. Outer frame; 2. Wind uniforming component; 21. Wind uniforming chamber; 22. Air blowing wall; 201. Air outlet; 202. Air inlet; 3. First limit block; 4. Second limit block; 5. Battery. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Please refer to the attached Figure 1-6 The present application provides a battery tray, which includes an outer frame 1, which can accommodate at least one column of batteries 5, and the arrangement direction of each battery 5 in the column of batteries 5 can be recorded as the first direction. When multiple columns of batteries 5 are accommodated in the outer frame 1, the multiple columns of batteries 5 can be arranged along the second direction. A uniform wind component 2 is also provided in the outer frame 1, and the uniform wind component 2 is provided with an air inlet 202 and an air outlet 201. On a device provided with a battery tray, for example, a chemical component storage device, a wind force member such as a fan is provided, and the air inlet 202 of the uniform wind component 2 can be opposite to the fan, so that the airflow blown into the uniform wind chamber 21 can be blown into the inside of the tray from the air outlet 201 to cool each battery 5. At the same time, in the present application, the air outlet 201 of the uniform wind component 2 is at least located on one side of each column of batteries 5 and faces the battery 5, that is, at least one side of each column of batteries 5 on both sides in the second direction is provided with an air outlet 201. Then, after the airflow is blown out from the air outlet 201, it will blow toward the battery 5 from the side of the battery 5. The air outlet 201 extends or is arranged along the arrangement direction (first direction) of each battery 5 in the same row of batteries 5, so that each battery 5 is in the blowing area of ​​the air outlet 201. In other words, each battery 5 has at least one air outlet 201 or a local area corresponding to the air outlet 201 on the side thereof. The airflow is blown out through the air outlet 201 of the wind uniforming component 2 and can be blown to each battery 5 in the tray. In this way, the heat dissipation efficiency can be improved, and the airflow blown by the fan can be blown evenly to each battery 5 in the tray, thereby improving the uniformity of the wind blowing on each battery 5 in the tray, improving the heat dissipation uniformity of each battery 5 in the tray, and avoiding that the heat dissipation of some batteries 5 is poor and the temperature is higher than that of other batteries 5. At the same time, the air outlet 201 is set on the side of the battery 5, and air is blown to the battery 5 from the side of the battery 5. Compared with cooling the battery 5 by blowing air directly upward from the bottom of the tray, the entire battery 5 can be cooled more evenly, and the temperature difference between the upper and lower parts of the battery 5 can be reduced.

[0026] It can be seen that the battery tray provided in the present application allows each battery in the tray to be blown evenly, thereby improving the blowing effect on each battery 5 in the tray, having high heat dissipation efficiency, and can also reduce the heat dissipation difference between each battery 5 in the tray, thereby improving the overall temperature uniformity. For a single battery 5, blowing air from the side for heat dissipation can also improve the temperature uniformity of the upper and lower parts of the battery 5, thereby improving the ultimate performance of the battery 5, and effectively solving the problem in the prior art that the temperature uniformity is affected due to uneven heat dissipation of each battery 5 in the tray.

[0027] Further, in order to improve the uniformity of the air volume blown out from the side of each battery 5, in some embodiments, the uniform wind component 2 includes a uniform wind chamber 21, which is located at least on one side of each column of batteries 5 and extends along the arrangement direction of each battery 5 in the same column of batteries 5. The uniform wind chamber 21 is a channel for supplying and uniform wind, and the air outlet 201 is opened on the side wall of the uniform wind chamber 21 facing the battery 5, such as the blowing wall 22 shown in the accompanying drawings. The air outlet 201 can be a strip, extending from one end of the first direction of the outer frame 1 to the other end, covering the side of each battery 5 in a column of batteries 5. The air outlet 201 can also be composed of a plurality of small openings arranged along the first direction, so that there is at least one small opening corresponding to the side of each battery 5. In this way, the wind on the side of each battery 5 is blown out from the same uniform wind chamber 21, the air volume is uniform, the heat dissipation is uniform, and the temperature deviation is small.

[0028] Of course, in other embodiments, the wind uniforming component 2 may also be provided with a plurality of air supply channels, each of which is provided with an air outlet 201, and the air outlets 201 are arranged and distributed along the first direction so that the wind can be blown directly to each battery 5 in the tray.

[0029] At least one side of each column of batteries 5 is provided with an air outlet 201. In a preferred embodiment, both sides of each column of batteries 5 (both sides in the second direction) are provided with an air outlet 201. In this way, each column of batteries 5 is cooled by cold air blown symmetrically from both sides. Blowing air symmetrically from both sides of the battery 5 to cool the battery 5 can further improve the uniformity of heat dissipation of the battery 5 and improve the temperature uniformity of each area on a single battery 5.

[0030] In some embodiments, the air outlets 201 are arranged in at least two rows in the height direction of the outer frame 1. Figure 1 , Figure 4-6 As shown, the height direction of the outer frame 1 is also the height direction of the battery 5. At least two rows of air outlets 201 are arranged along the height direction of the battery 5. Each row of air outlets 201 extends along the arrangement direction of the batteries in the same column, or each row of air outlets 201 includes a plurality of outlets distributed along the arrangement direction of the batteries in the same column. Then, each section of the battery 5 from the top to the bottom is directly blown by cold air, which can improve the heat dissipation efficiency of the battery 5, improve the heat dissipation uniformity of each area of ​​the battery 5, improve the temperature uniformity of each area on a single battery 5, and prevent the phenomenon that the temperature of the upper part of the battery 5 is high and the temperature of the lower part is low.

[0031] Alternatively, in the arrangement direction of the batteries in the same column, a plurality of air outlets 201 are arranged at intervals, and each air outlet 201 has an extended length in the height direction of the outer frame 1 .

[0032] The uniform air chamber 21 is a chamber or a channel. Figure 1 As shown, in some embodiments, the outer frame 1 has a plurality of protrusions extending along the first direction and arranged along the second direction, and the protrusions form a uniform wind component 2. The uniform wind component 2 is in the shape of a strip, and a uniform wind cavity 21 is provided on the uniform wind component 2. For example, the uniform wind component 2 is a hollow structure and the hollow cavity inside forms a uniform wind cavity 21. The side wall of the uniform wind component 2 is the side wall of the uniform wind cavity 21, and the above-mentioned air outlet 201 is provided. A slot space for accommodating a row of batteries 5 is formed between each adjacent two uniform wind components 2. A uniform wind component 2 and an air outlet 201 are provided on both sides of each slot space. The uniform wind component 2 can be integrally formed with the outer frame 1.

[0033] The air inlet 202 of the air uniformity chamber 21 is provided on the bottom plate of the outer frame 1 to take in air from the bottom of the outer frame 1. At the same time, the air inlet 202 extends along the arrangement direction of the batteries 5 in the same row of batteries 5. With such a configuration, on the one hand, the air volume of each section in the air uniformity chamber 21 is relatively uniform, and after being rectified by the air uniformity chamber 21, the air volume blown out from the air outlet 201 is more uniform, and the air blowing effect received by each battery 5 in the tray is basically the same, which effectively improves the heat dissipation uniformity of each battery 5 in the entire tray and reduces the temperature difference between each battery 5; on the other hand, the wind force components such as fans can be arranged below the battery tray, and the spatial layout is reasonable.

[0034] like Figure 4-Figure 6 As shown, along the direction from the bottom to the top of the outer frame 1, the uniform air chamber 21 has a tapered structure, and the space inside the chamber gradually shrinks. When the air enters from the bottom of the outer frame 1, the wind pressure will usually gradually decrease as it moves away from the direction of the air inlet. Reducing the space inside the uniform air chamber 21 can increase the wind pressure, thereby compensating for the effect of the wind pressure decreasing due to the distance, so as to improve the uniformity of the air volume of the upper and lower air outlets 201, improve the uniformity of blowing to the battery 5, and thus improve the heat dissipation uniformity and temperature uniformity of the battery 5.

[0035] Specifically, along the direction from the bottom to the top of the outer frame 1, the side wall of the air uniformity chamber 21 is a gradually inclined slope structure or a gradually concave step-like structure. In this way, the tapered structure of the air uniformity chamber 21 can be achieved. For example, the side wall of the air uniformity chamber 21 with the air outlet 201 is recorded as the blowing wall 22, as shown in FIG. Figure 4 and Figure 5 As shown, the blowing wall 22 is an inclined surface or a stepped surface. Figure 6 As shown, the other side wall of the air uniforming cavity 21 opposite to the air blowing wall 22 is an inclined surface or a step surface.

[0036] In some embodiments, along the height direction of the outer frame 1, the side wall of the uniform air chamber 21 facing the battery has a recess and a protrusion, and the air outlet 201 is arranged on the recess to have a spacing with the side of the battery. There can be one recess or multiple recesses. When there are multiple recesses and protrusions, they are staggered along the height direction. Each recess is provided with at least one air outlet 201. The protrusion can be against the side of the battery, which is equivalent to forming a limiting surface for limiting the battery position, to limit the position of the battery and prevent the battery from moving or shaking.

[0037] When the wind uniforming component 2 is provided with a side wall of the air outlet 201, such as a blowing wall 22, and in the height direction of the outer frame 1, the distances between each section of the blowing wall 22 and the side surface of the battery are consistent, or the blowing wall 22 is an inclined slope structure or a step-like structure, and the distance from the side surface of the battery gradually increases from the bottom to the top of the outer frame 1, in order to avoid the entire blowing wall 22 or the lower section of the blowing wall 22 close to the bottom plate of the outer frame 1 being too close to the side surface of the battery, which is not conducive to blowing from the air outlet 201, an isolation block or a limit block, such as a second limit block 4, may be provided between the blowing wall 22 and the side surface of the battery, which can not only separate the battery and the air outlet 201, but also limit the position of the battery.

[0038] As mentioned above, the batteries are placed in the tray, and the positions of the batteries need to be limited to prevent the batteries 5 from being misplaced, moved or tilted. Therefore, a limiting structure for fixing each battery 5 may be provided in the outer frame 1.

[0039] The limiting structure may be a groove or a limiting block for fixing the battery 5. For example, the limiting structure includes a plurality of first limiting blocks 3 arranged at intervals along the arrangement direction of the battery 5 so as to be located between each two adjacent batteries 5, and / or second limiting blocks 4 distributed on both sides of each battery 5. The first limiting block 3 and the second limiting block 4 may be provided separately or together. When the first limiting block 3 and the second limiting block 4 are provided together, the first limiting block 3 and the second limiting block 4 are arranged alternately in the first direction.

[0040] The interval between each two adjacent first limit blocks 3 forms a limit groove for accommodating the battery 5, or the interval between two second limit blocks 4 distributed on both sides of the same battery 5 forms a limit groove for accommodating the battery 5, or the first limit blocks 3 and the second limit blocks 4 in the circumferential direction of each battery 5 enclose a limit groove for accommodating the battery 5.

[0041] When the second limit block 4 is provided, the blowing wall 22 of the wind uniforming component 2 may be any of the structures mentioned in the above embodiments. When the second limit block 4 is not provided, the blowing wall 22 may be an inclined slope structure, or a step-like structure, or have staggered recesses and protrusions. When the blowing wall 22 is an inclined slope structure or a step-like structure, the air outlet 201 is provided on a section of the blowing wall 22 that is spaced apart from the side surface of the battery; when the blowing wall 22 has staggered recesses and protrusions, the air outlet 201 is provided on the recessed portion, or in other words, each recessed portion is provided with at least one air outlet 201.

[0042] The embodiment of the present application also provides a formation and capacity separation device, including a formation and capacity separation cabinet, a formation and capacity separation cavity arranged on the formation and capacity separation cabinet, and a battery tray for being arranged in the formation and capacity separation cavity, wherein the battery tray is a battery tray as described in any of the above embodiments. The formation and capacity separation device can improve the temperature uniformity of the battery 5 and improve the performance of the battery 5 after treatment when performing formation and capacity separation treatment on the battery 5. The derivation process of this beneficial effect is basically the same as the derivation process of the beneficial effect of the battery tray mentioned above, and will not be repeated here.

[0043] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0044] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0045] It should also be noted that in the device and apparatus of the present application, each component can be decomposed and / or reassembled, and such decomposition and / or reassembly should be regarded as an equivalent solution of the present application.

[0046] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0047] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery tray, characterized in that: It comprises an outer frame for accommodating at least one column of batteries, wherein a uniform wind component is arranged inside the outer frame, wherein the uniform wind component comprises an air inlet and an air outlet located at least on one side of each column of batteries and blowing air toward the batteries, wherein the air outlet extends or is arranged along the arrangement direction of the batteries in the same column of batteries so that each battery is within the blowing area of ​​the air outlet.

2. The battery tray according to claim 1, characterized in that: The wind uniforming component includes a wind uniforming cavity located at least on one side of each column of batteries and extending along the arrangement direction of the batteries in the same column, and the air outlet is arranged on the side wall of the wind uniforming cavity facing the batteries.

3. The battery tray according to claim 1 or 2, characterized in that: In the height direction of the outer frame, the air outlets are arranged in multiple rows, and the air outlets in each row extend along the arrangement direction of the batteries in the same column, or the air outlets in each row include multiple outlets distributed along the arrangement direction of the batteries in the same column; Alternatively, in the arrangement direction of the batteries in the same column, the air outlets are provided in plurality and arranged at intervals, and each of the air outlets has an extended length in the height direction of the outer frame.

4. The battery tray according to claim 2, characterized in that: The air inlet of the air uniformity chamber is arranged on the bottom plate of the outer frame so as to take in air from the bottom of the outer frame, and the air inlet extends along the arrangement direction of the batteries in the same row.

5. The battery tray according to claim 2, characterized in that: Along the direction from the bottom to the top of the outer frame, the uniform air chamber has a tapered structure and the space inside the chamber gradually decreases; or, along the height direction of the outer frame, the side wall of the uniform air chamber facing the battery has a recessed portion and a raised portion, and the air outlet is arranged on the recessed portion to have a distance from the side of the battery.

6. The battery tray according to claim 2 or 5, characterized in that: Along the direction from the bottom to the top of the outer frame, the side wall of the air uniformity chamber is in a gradually inclined slope structure or a gradually concave step-shaped structure.

7. The battery tray according to claim 2, characterized in that: The outer frame has a plurality of protrusions extending along the first direction and arranged along the second direction, the protrusions forming the wind uniformity component, the protrusions are hollow structures and the internal hollow cavities form the wind uniformity chamber, and a slot space for accommodating a row of batteries is formed between each two adjacent protrusions.

8. The battery tray according to claim 1, characterized in that: A limiting structure for fixing each battery is also arranged inside the outer frame.

9. The battery tray according to claim 8, characterized in that: The limiting structure includes a plurality of first limiting blocks arranged at intervals along the arrangement direction of the batteries and located between every two adjacent batteries, and / or second limiting blocks distributed on both sides of each of the batteries.

10. A chemical fractionation device, characterized in that: It comprises a chemical component storage cabinet, a chemical component storage cavity arranged on the chemical component storage cabinet, and a battery tray used to be arranged in the chemical component storage cavity, and the battery tray is the battery tray according to any one of claims 1-9.

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