Thermotank structure

Abstract

The utility model discloses a thermotank structure. The constant-temperature box structure comprises a box body, air blowing pieces and baffles, the baffles are arranged on a bottom plate of the box body, the air blowing pieces are arranged on the side wall of the box body, the baffles are arranged, the height of the baffles is smaller than that of the box body, and the baffles are arranged at intervals in the air outlet direction of the air blowing pieces. The baffles are installed in the constant-temperature box, the lithium batteries are prevented from being directly blown by wind, heat transfer between the adjacent lithium batteries is blocked, meanwhile, normal regulation and control of the internal environment of the constant-temperature box are not affected, and the consistency of the temperatures of the lithium batteries at different positions is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery equipment technology, specifically to a constant temperature chamber structure. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries that rely on the movement of lithium ions between the positive and negative electrodes to achieve charging and discharging. Compared with other major rechargeable batteries, lithium-ion batteries have significant advantages such as high energy density, high discharge power, long cycle life, no memory effect, and environmental friendliness, which is why they are widely used.

[0003] Lithium battery testing requires simulating its performance at different temperatures. Currently, constant temperature chambers are commonly used for testing. By blowing cold or hot air into the chamber through a blower, the ambient temperature inside the chamber changes, allowing the lithium batteries placed inside to be tested at the target temperature.

[0004] The interior of the constant temperature chamber is an open space. When multiple lithium batteries are placed inside for testing at the same time, the lithium batteries will generate heat during the charging and discharging process. However, the lithium batteries that are relatively close to the air vent will dissipate heat faster because they are directly blown by the air, while the lithium batteries that are relatively far from the air vent will dissipate heat more slowly. This results in inconsistent temperatures of lithium batteries in different positions, affecting the accuracy of the lithium battery test results. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a constant temperature chamber structure that can ensure the temperature consistency of lithium batteries in different locations, thereby improving the accuracy of testing.

[0006] To achieve the above objectives, the technical solution designed by this utility model is as follows:

[0007] A constant temperature chamber structure for performing performance tests on lithium batteries at different temperatures includes a chamber body, a blower, and baffles. The baffles are disposed on the bottom plate of the chamber body, and the blower is disposed on the side wall of the chamber body. Multiple baffles are provided, and their height is less than the height of the chamber body, and they are arranged at intervals along the air outlet direction of the blower.

[0008] Optionally, the baffle includes a first baffle and a plurality of second baffles. In the air outlet direction of the blower, the first baffle is located on the side closest to the blower, and the height of the second baffle is less than the height of the first baffle.

[0009] Optionally, the distance D between the first baffle and the blower is in the range of 0 < D ≤ d / (n+1), where d is the length of the housing and n is the number of lithium batteries.

[0010] Optionally, the plurality of second baffles are arranged at uniform intervals.

[0011] Optionally, a first slide rail is provided on the bottom plate of the housing, the first slide rail is perpendicular to the air outlet direction of the blower, and the first baffle and the second baffle are both slidably disposed on the first slide rail.

[0012] Optionally, a second slide rail is provided on the bottom plate of the housing, and a slide plate for holding lithium batteries is slidably disposed on the second slide rail.

[0013] Optionally, in the air outlet direction of the blower, at least one side of the housing is an openable / closing cover structure.

[0014] Optionally, the baffle is made of stainless steel.

[0015] The beneficial effects of this utility model are:

[0016] 1. The constant temperature chamber structure of this utility model can effectively prevent lithium batteries from being blown directly by the wind, so that the heat dissipation efficiency of lithium batteries in different positions is consistent. It also blocks the heat transfer between adjacent lithium batteries, prevents the temperature of other surrounding lithium batteries from being affected by the heat generated by itself, and ensures the temperature consistency of all lithium batteries.

[0017] 2. This utility model, by setting a slide and a sliding plate on the bottom plate of the constant temperature chamber, can not only control the entry and exit of the baffles and lithium batteries, but also control the number of baffles and lithium batteries placed inside the chamber, and also control the distance between lithium batteries. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a constant temperature chamber according to the present invention;

[0019] In the diagram, 1 is the housing; 2 is the blower; 3 is the baffle; 31 is the first baffle; 32 is the second baffle; 4 is the lithium battery; 5 is the first slide rail; 6 is the second slide rail; and 7 is the slide plate. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to specific embodiments, so that those skilled in the art can understand it.

[0021] Figure 1 This is a schematic diagram of the overall structure of a constant temperature chamber, as shown below. Figure 1As shown, this embodiment of the present invention provides a constant temperature chamber structure for performance testing of lithium battery 4 at different temperatures. It includes a chamber body 1, a blower 2, and baffles 3. Baffles 3 are disposed on the bottom plate of the chamber body 1, and the blower 2 is disposed on the side wall of the chamber body 1. Multiple baffles 3 are provided, with a height less than the height of the chamber body 1, and are spaced apart along the air outlet direction of the blower 2. Using the constant temperature chamber structure of this embodiment, multiple baffles 3 are spaced apart inside the chamber body 1, forming independent placement spaces between adjacent baffles 3 for individual placement of the lithium battery 4. The baffles 3 are located at the front end of the lithium battery 4, and the airflow from the blower 2 preferentially contacts the nearest baffle 3. The baffles 3 can obstruct the airflow to prevent the lithium battery 4 from being directly blown by the wind. Furthermore, there is a certain gap above the baffle 3. The airflow blown out by the blower 2 is blocked by the baffle 3, and the airflow overflows from bottom to top, gradually filling the interior of the box 1. This does not affect the normal regulation of the internal environment of the box 1, making the internal temperature of the box 1 more uniform. This makes the temperature of the environment of the lithium battery 4 in different positions more similar, and makes the heat dissipation efficiency of the lithium battery 4 between multiple baffles 3 consistent, thereby improving the accuracy of the performance test results of the lithium battery 4.

[0022] Optionally, the baffle 3 includes a first baffle 31 and multiple second baffles 32. In the air outlet direction of the blower 2, the first baffle 31 is located on the side closest to the blower 2, and the height of the second baffle 32 is less than the height of the first baffle 31 but greater than the height of the lithium battery 4. For example, in this embodiment of the invention, when the lithium battery 4 is subjected to performance testing at different temperatures, as the test progresses, the lithium battery 4 itself dissipates heat, which affects the heat dissipation of surrounding lithium batteries 4. Adjacent lithium batteries 4 also affect their own heat dissipation. The second baffle 32 separates adjacent lithium batteries 4, preventing heat transfer between adjacent lithium batteries 4 and preventing the temperature of surrounding lithium batteries 4 from being affected by their own temperature, while also preventing adjacent lithium batteries 4 from affecting themselves. The airflow blown out by the blower 2 overflows above the first baffle 31. The height of the second baffle 32 is lower than the first baffle 31, so it does not affect the airflow filling the interior of the housing 1. The height of the second baffle 32 is higher than the lithium battery 4, preventing the heat dissipation problem of the lithium battery 4 from affecting the surrounding lithium batteries 4.

[0023] Optionally, the distance D between the first baffle 31 and the blower 2 is in the range of 0 < D ≤ d / (n+1), where d is the length of the housing 1 and n is the number of lithium batteries 4. Exemplarily, in this embodiment of the invention, there is a certain gap between the first baffle 31 and the blower 2, which does not affect the operation of the blower 2. There is a certain space above the first baffle 31, allowing the airflow blown by the blower 2 to be blocked by the first baffle 31 and overflow from bottom to top, filling the interior of the housing 1 without affecting the normal regulation of the internal environment of the housing 1. The distance D between the first baffle 31 and the blower 2 is ≤ d / (n+1), ensuring sufficient space for placing the second baffle 32 and the lithium batteries 4.

[0024] Optionally, multiple second baffles 32 are arranged at uniform intervals. Exemplarily, in this embodiment of the invention, the second baffles 32 are arranged at uniform intervals after the first baffle 31, and the lithium batteries 4 are placed between adjacent second baffles 32, so that each lithium battery 4 is in its own space, and the distance between adjacent lithium batteries 4 is the same. The airflow from the blower 2 fills the space occupied by each lithium battery 4, and compared with the traditional constant temperature chamber structure, the temperature of each space is relatively uniform, thereby improving the accuracy of the lithium battery 4 performance test results.

[0025] Optionally, a first slide rail 5 is provided on the bottom plate of the chamber 1. The first slide rail 5 is perpendicular to the air outlet direction of the blower 2. The first baffle 31 and the second baffle 32 are both slidably disposed on the first slide rail 5. Exemplarily, in this embodiment of the invention, before the performance test of the lithium battery 4, the baffle 3 is placed on the first slide rail 5 manually or by using a motor. After the performance test of the lithium battery 4 is completed, the baffle 3 is removed from the first slide rail 5 manually or by using a motor. The first slide rail 5 facilitates the entry and exit of the baffle 3. When assembling the constant temperature chamber, the number and position of the first slide rail 5 are set according to the actual situation and usage requirements, indirectly determining the number and position of the baffle 3.

[0026] Optionally, a second slide rail 6 is provided on the bottom plate of the chamber 1, and a sliding plate 7 for holding the lithium battery 4 is slidably disposed on the second slide rail 6. Exemplarily, in this embodiment of the invention, before the performance test of the lithium battery 4, the lithium battery 4 is placed on the sliding plate 7 manually or by a motor, and then the sliding plate 7 is pushed into the chamber 1 along the second slide rail 2 manually or by a motor. After the performance test of the lithium battery 4 is completed, the sliding plate 7 is pushed out of the chamber 1 manually or by a motor along the second slide rail 2, and the lithium battery 4 is removed from the sliding plate 7 manually or by a motor. The second slide rail 6 and the sliding plate 7 facilitate the entry and exit of the lithium battery 4. When assembling the constant temperature chamber, the number and position of the second slide rail 6 and the sliding plate 7 are set according to the actual situation and usage needs, indirectly determining the number and position of the lithium battery 4.

[0027] Optionally, in the air outlet direction of the blower 2, at least one side of the housing 1 is a hinged cover structure. Exemplarily, in this embodiment of the invention, the housing 1 is a cube or cuboid structure. In the air outlet direction of the blower 2, a hinged cover structure is provided on the top of one side of the housing 1. Before conducting the performance test of the lithium battery 4, the hinged cover structure is opened from the bottom, and the baffle 3 and the lithium battery 4 are placed inside the housing 1. After the performance test of the lithium battery 4 is completed, the hinged cover structure is opened from the bottom, and the baffle 3 and the lithium battery 4 are removed from the housing 1. The hinged cover structure makes it more convenient for the baffle 3 and the lithium battery 4 to enter and exit.

[0028] Optionally, the baffle 3 is made of stainless steel. For example, in this embodiment of the present invention, the stainless steel plate is SUS304 high-grade stainless steel plate. SUS304 high-grade stainless steel plate is a high-temperature resistant material and has high plasticity, toughness and mechanical strength. Using SUS304 high-grade stainless steel plate can prevent the baffle 3 from being damaged due to excessive internal temperature of the box 1 and improve the overall service life.

[0029] All other parts not described in detail are existing technologies. Although the above embodiments provide a detailed description of the present invention, they are only some embodiments of the present invention, not all embodiments. People can obtain other embodiments based on this embodiment without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A constant temperature chamber structure for performing performance tests of lithium batteries (4) at different temperatures, characterized in that: It includes a housing (1), a blower (2) and a baffle (3). The baffle (3) is disposed on the bottom plate of the housing (1), the blower (2) is disposed on the side wall of the housing (1), and multiple baffles (3) are provided, with a height less than that of the housing (1) and arranged at intervals along the air outlet direction of the blower (2).

2. The constant temperature chamber structure according to claim 1, characterized in that: The baffle (3) includes a first baffle (31) and a plurality of second baffles (32). In the air outlet direction of the blower (2), the first baffle (31) is located on the side closest to the blower (2), and the height of the second baffle (32) is less than the height of the first baffle (31).

3. The constant temperature chamber structure according to claim 2, characterized in that: The distance D between the first baffle (31) and the blower (2) is in the range of 0 < D ≤ d / (n+1), where d is the length of the box (1) and n is the number of lithium batteries (4).

4. The constant temperature chamber structure according to claim 2, characterized in that: The plurality of second baffles (32) are arranged at uniform intervals.

5. The constant temperature chamber structure according to claim 2, characterized in that: The bottom plate of the housing (1) is provided with a first slide rail (5), which is perpendicular to the air outlet direction of the blower (2). The first baffle (31) and the second baffle (32) are both slidably disposed on the first slide rail (5).

6. The constant temperature chamber structure according to claim 5, characterized in that: The bottom plate of the box (1) is provided with a second slide rail (6), and a slide plate (7) for holding lithium battery (4) is slidably arranged on the second slide rail (6).

7. The constant temperature chamber structure according to claim 6, characterized in that: In the air outlet direction of the blower (2), at least one side of the housing (1) is an openable cover structure.

8. The constant temperature chamber structure according to claim 2, characterized in that: The baffle (3) is made of stainless steel.

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