Battery quick cooling box for lithium battery vacuum drying

Abstract

This invention discloses a rapid cooling box for lithium battery vacuum drying, comprising a frame, a water-cooling mechanism, and an air circulation mechanism. The frame forms a receiving cavity; a base assembly is located within the receiving cavity; the water-cooling assembly is mounted on the base assembly; a heat exchange section forms a heat exchange chamber; an inlet water pipe and an outlet water pipe are both connected to the heat exchange chamber; a tray is placed on the heat exchange section and is used to mount batteries; the heat exchange section is used for heat exchange with the batteries; the air circulation mechanism includes an inlet air pipe, an outlet air pipe, and a condenser; the condenser is connected between the inlet air pipe and the outlet air pipe; the inlet air pipe has an air inlet, and the outlet air pipe has an air outlet; both the inlet and outlet air inlets are connected to the receiving cavity. This invention uses a rapid cooling box for lithium battery vacuum drying to cool batteries, improving the production efficiency of the baking line. Furthermore, the rapid cooling box combines water cooling and air cooling, resulting in higher cooling efficiency and achieving rapid battery cooling.

Description

Technical Field

[0001] This invention relates to the field of battery production, and more specifically to a rapid cooling box for vacuum drying of lithium batteries. Background Technology

[0002] Currently, the vacuum drying process for lithium-ion batteries mainly employs tunnel furnaces and single-cell furnaces, typically involving preheating, vacuum drying, and cooling stages. This invention primarily relates to the drying process for single-cell furnace batteries. Depending on the battery type and materials, the baking temperature during cell drying is generally set between 80 and 120°C. The vacuum drying stage uses a high-vacuum environment and high-temperature constant-temperature conditions to dry the moisture on the surface and inside of the battery's positive and negative electrodes and separator, ensuring that the moisture control of the battery materials meets the quality requirements for battery production. The cooling stage generally receives the high-temperature materials from the previous vacuum drying stage and employs a two-stage cooling method: forced convection cooling and natural cooling. Forced convection cooling is generally completed under nitrogen protective atmosphere conditions within the oven. After the battery baking process is completed, the forced convection cooling cools the high-temperature materials to a certain temperature, then the materials are transferred to a turnover rack inside the drying chamber for further cooling to room temperature via natural cooling. The battery cooling environment includes the interior of the oven and the material racks inside the drying chamber. This two-stage cooling method, with forced air cooling completed inside the oven, involves repeated heating and cooling processes within the oven itself. Furthermore, this cooling method requires external piping and cooling fans. Since the battery baking process is completed under high vacuum conditions, it increases the risk of system leakage, significantly increasing energy consumption, operating costs, and cycle time, and significantly reducing the production efficiency of the baking line. Moreover, the batteries are densely packed inside the oven, making overall cooling difficult and inefficient with a single forced air cooling method. Summary of the Invention

[0003] The main objective of this invention is to provide a rapid cooling box for lithium battery vacuum drying, in order to solve the problems of low production efficiency and low cooling efficiency of traditional two-stage cooling methods in baking lines.

[0004] To achieve the above objectives, the present invention proposes a rapid cooling box for lithium battery vacuum drying, comprising a frame, a water cooling mechanism, and an air circulation mechanism. The frame forms a receiving cavity. The water cooling mechanism includes a base assembly, a tray, and a water cooling component. The base assembly is located within the receiving cavity, and the water cooling component is mounted on the base assembly. The water cooling component includes a heat exchange section, an inlet pipe, and an outlet pipe. The heat exchange section forms a heat exchange cavity, and both the inlet pipe and the outlet pipe are connected to the heat exchange cavity. The tray is placed on the heat exchange section and is used to mount batteries. The heat exchange section is used to exchange heat with the batteries. The air circulation mechanism includes an air inlet pipe, an air outlet pipe, and a condenser. The condenser is connected between the air inlet pipe and the air outlet pipe. The air inlet pipe has an air inlet, and the air outlet pipe has an air outlet. Both the air inlet and the air outlet are connected to the receiving cavity.

[0005] Optionally, the tray includes a frame and a plurality of connecting rods extending along a first direction. The plurality of connecting rods are all connected to the frame and spaced apart along a second direction. The first direction and the second direction are perpendicular to each other. An installation space is formed between any two adjacent connecting rods. The installation space is used to place the battery. Abutment portions are formed on both sides of the connecting rods. The abutment portions extend along a direction close to the installation space. The abutment portions are flush with the heat exchange portion in the vertical direction so that the battery can abut against the heat exchange portion for heat exchange.

[0006] Optionally, each of the connecting rods is provided with a plurality of partition blocks, the partition blocks are spaced apart along the first direction, and the partition blocks are formed with a stop notch, the stop notch being used to stop the battery.

[0007] Optionally, there are multiple water-cooling components, which are spaced apart, and the inlet and outlet water pipes of each water-cooling component are staggered.

[0008] Optionally, the water inlet pipe has an inlet communicating with the heat exchange chamber, and the height of the inlet is H1; the water outlet pipe has an outlet communicating with the heat exchange chamber, and the height of the outlet is H2; wherein, H2>H1.

[0009] Optionally, a thermally conductive protective layer is provided on the side of the heat exchange section closest to the battery; and / or,

[0010] The heat exchange section is provided with connecting lugs, which are detachably connected to the base assembly via fasteners.

[0011] Optionally, a temperature sensor is provided on the base assembly; and / or,

[0012] The base assembly is equipped with a micro-motion sensor, which is used to detect the vertical position of the tray.

[0013] Optionally, the air circulation mechanism further includes an air guide assembly, which includes a support and at least two air guide plates. The support forms an air guide cavity that communicates with the receiving cavity. The support has an air inlet. The air guide cavity communicates with the air inlet or the air outlet through the air inlet. At least two air guide plates are spaced apart in the air guide cavity and divide the air guide cavity into multiple air distribution cavities.

[0014] Optionally, the rapid cooling box for lithium battery vacuum drying further includes a sealing door mechanism. The sealing door mechanism includes a door body and a drive assembly. The drive assembly includes a drive element, a mounting bracket, and a connecting arm. The mounting bracket is connected to the frame, the drive element is connected to the mounting bracket, and the connecting arm has a hinge portion that is hinged to the mounting bracket. The connecting arm is connected between the output end of the drive element and the door body. The door body is used to open or close the receiving cavity.

[0015] Optionally, there are two drive components, which are located on both sides of the door body, and a synchronous shaft is connected between the two hinges.

[0016] In this invention, the base assembly is used to install and support the water-cooling component. The heat exchange section forms a heat exchange chamber, and an inlet pipe connects to the heat exchange chamber, allowing cooling water to flow into it. The battery is mounted on a tray, which is placed on the heat exchange section. The heat exchange section contacts the battery and exchanges heat with it through the cooling water, thus cooling the battery. After exchanging heat with the battery, the cooling water in the heat exchange section flows out through the outlet pipe, allowing fresh cooling water to enter the heat exchange chamber and improving heat exchange efficiency. An air inlet duct forms an air inlet connected to the receiving cavity. Air in the receiving cavity enters the condenser through the air inlet, where it is cooled. An air outlet duct forms an air outlet connected to the receiving cavity. Air cooled by the condenser returns to the receiving cavity through the air outlet. Air circulation within the receiving cavity is achieved through the air inlet and outlet ducts, and the condenser cools the air in the receiving cavity, thereby cooling the battery. Furthermore, the water-cooling mechanism and the air circulation mechanism compensate for each other, resulting in higher battery cooling efficiency. Compared to the existing two-stage cooling technology, this invention employs a one-stage cooling system. After the battery baking process, the high-temperature material is directly transported to the rapid cooling box for lithium battery vacuum drying using a stacker crane or forklift robot. The battery is cooled within the rapid cooling box, eliminating the need for repeated heating and cooling operations in the oven. The high-temperature oven can directly handle the baking of the next material, significantly reducing energy consumption, lowering production and operating costs, and improving production efficiency. This invention's rapid cooling box for lithium battery vacuum drying can handle the cooling tasks of multiple ovens in the previous process, reducing equipment investment costs and increasing production efficiency per unit area of ​​the factory. Furthermore, the rapid cooling box combines water cooling and air cooling for even higher cooling efficiency, achieving rapid battery cooling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a rapid cooling box for vacuum drying of lithium batteries according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the water cooling mechanism and the air circulation mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is an exploded view of a water-cooling mechanism according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of a water-cooling mechanism according to an embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional schematic diagram of a water-cooling assembly and a tray according to an embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional schematic diagram of a water-cooling component according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a sealing door mechanism according to an embodiment of the present invention.

[0025] Explanation of icon numbers:

[0026]

[0027]

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0034] In this invention, the descriptions of directions such as "up," "down," "front," "back," "left," and "right" are as follows: Figure 1 The directions shown are for reference only and are used to interpret the location. Figure 1 The relative positional relationship between the components in the shown posture is such that if the specific posture changes, the directional indication will also change accordingly.

[0035] This invention provides a rapid cooling box 100 for vacuum drying of lithium batteries.

[0036] In one embodiment, such as Figures 1 to 7 As shown, the rapid cooling box 100 for lithium battery vacuum drying includes a frame 10, a water cooling mechanism 20, and an air circulation mechanism 30. The frame 10 forms a receiving cavity 11. The water cooling mechanism 20 includes a base assembly 21, a tray 22, and a water cooling component 23. The base assembly 21 is located within the receiving cavity 11, and the water cooling component 23 is mounted on the base assembly 21. The water cooling component 23 includes a heat exchange section 231, a water inlet pipe 232, and a water outlet pipe 233. The heat exchange section 231 forms a heat exchange cavity 2311, and the water inlet pipe 232... Both the water outlet pipe 233 and the heat exchange chamber 2311 are connected. The tray 22 is placed on the heat exchange section 231. The tray 22 is used to install the battery 225. The heat exchange section 231 is used to exchange heat with the battery 225. The air circulation mechanism 30 includes an air inlet pipe 31, an air outlet pipe 32 and a condenser 33. The condenser 33 is connected between the air inlet pipe 31 and the air outlet pipe 32. The air inlet pipe 31 has an air inlet 311 and the air outlet pipe 32 has an air outlet 321. Both the air inlet 311 and the air outlet 321 are connected to the receiving cavity 11.

[0037] The base assembly 21 is used to install and support the water-cooled assembly 23. The heat exchange section 231 forms a heat exchange cavity 2311. The water inlet pipe 232 is connected to the heat exchange cavity 2311 and is used to introduce cooling water into the heat exchange cavity 2311. The battery 225 is mounted on the tray 22, which is placed on the heat exchange section 231. The heat exchange section 231 abuts against the battery 225 and exchanges heat with the battery 225 through cooling water, thereby cooling the battery 225.

[0038] Cooling water enters the heat exchange chamber 2311 within the heat exchange section 231 through the inlet pipe 232. After heat exchange with the battery 225, the cooling water in the heat exchange section 231 flows out through the outlet pipe 233, allowing fresh cooling water to enter the heat exchange chamber 2311 and improving heat exchange efficiency. The air inlet pipe 31 has an air inlet 311 connected to the receiving cavity 11. Air in the receiving cavity 11 enters the condenser 33 through the air inlet 311, where the condenser 33 cools the air. The air outlet pipe 32 has an air outlet 321 connected to the receiving cavity 11. Air cooled by the condenser 33 returns to the receiving cavity 11 through the air outlet 321. Air circulation within the receiving cavity 11 is achieved through the air inlet pipe 31 and the air outlet pipe 32, and the cooling of the air within the receiving cavity 11 by the condenser 33, thereby cooling the battery 225. Furthermore, the water cooling mechanism 20 and the air circulation mechanism 30 compensate for each other, resulting in higher cooling efficiency for the battery 225.

[0039] Compared to the existing two-stage cooling technology, this invention adopts a one-stage cooling system. After the battery 225 is baked, the high-temperature material is directly transported to the rapid cooling box 100 for lithium battery vacuum drying using a stacker crane or forklift robot. The battery is cooled inside the rapid cooling box 100, eliminating the need for repeated heating and cooling operations in the oven. The high-temperature oven can directly handle the baking of the next material, thus significantly reducing the energy consumption of the vacuum baking line, lowering production and operating costs, and improving the production efficiency of the baking line. The rapid cooling box 100 for lithium battery vacuum drying of this invention can handle the cooling tasks of multiple ovens in the previous process, reducing equipment investment costs and increasing the production efficiency per unit area of ​​the factory. Furthermore, the rapid cooling box 100 for lithium battery vacuum drying of this invention combines water cooling and air cooling, resulting in higher cooling efficiency and achieving rapid cooling of the battery 225.

[0040] Specifically, the refrigerant in the condenser 33 can be cooling water or a refrigerant such as fluorine, and the cooling air medium can be air or N2. Centrifugal fans are installed in the air inlet duct 31 and the air outlet duct 32 to accelerate air circulation. The lithium battery vacuum drying battery rapid cooling box 100 is equipped with a first pipe 24 connecting the cooling water source and the water inlet pipe 232, and a second pipe 25 connecting the collection device and the water outlet pipe 233.

[0041] In one embodiment, please refer to the reference Figure 3 and Figure 5 The tray 22 includes a frame 221 and a plurality of connecting rods 222 extending along a first direction. The plurality of connecting rods 222 are all connected to the frame 221 and are spaced apart along a second direction. The first direction and the second direction are perpendicular to each other. An installation space 224 is formed between any two adjacent connecting rods 222. The installation space 224 is used to place the battery 225. Abutment portions 2221 are formed on both sides of the connecting rods 222. The abutment portions 2221 extend along the direction close to the installation space 224. The abutment portions 2221 are flush with the heat exchange portion 231 in the vertical direction so that the battery 225 can abut against the heat exchange portion 231 for heat exchange.

[0042] The first direction is Figure 1 The front and back directions, the second direction is Figure 1 The connecting rods 222 extend in the front-to-back direction, and multiple connecting rods 222 are spaced apart in the left-to-right direction. The connecting rods 222 are installed and fixed by connecting to the frame 221. An installation space 224 is formed between any two adjacent connecting rods 222, and the installation space 224 is used to place the battery 225. Abutment portions 2221 are formed on the left and right sides of the connecting rods 222. The abutment portions 2221 extend in the direction close to the installation space 224. The abutment portions 2221 are flush with the heat exchange portion 231 in the vertical direction, so as to facilitate the contact and heat exchange between the battery 225 and the heat exchange portion 231, so that the heat exchange portion 231 can be cooled.

[0043] In one embodiment, please refer to the reference Figure 3 Each connecting rod 222 is provided with multiple partition blocks 223, which are spaced apart along the first direction. Each partition block 223 has a stop notch 2231, which is used to stop the battery 225.

[0044] Multiple separators 223 are spaced apart on the connecting rod 222 in the front-to-back direction. Each separator 223 has a stop notch 2231, which is used to stop the battery 225 and limit the battery 225 to prevent the battery 225 from shaking and affecting the cooling efficiency and uniformity.

[0045] In one embodiment, please refer to the reference Figure 4 There are multiple water-cooling components 23, which are spaced apart, and the inlet pipe 232 and outlet pipe 233 of each water-cooling component 23 are staggered.

[0046] By incorporating multiple water-cooling components 23, the cooling efficiency of the rapid cooling box 100 for lithium battery vacuum drying is improved. These water-cooling components 23 are spaced apart along the front-to-back direction. Specifically, the number of water-cooling components 23 matches the number of installation spaces 224, meaning a water-cooling component 23 is placed between any two adjacent connecting rods 222, thus enhancing cooling efficiency. The inlet and outlet water pipes 232 of each water-cooling component 23 are staggered, resulting in a rational layout of the water-cooling mechanism 20 and facilitating its use.

[0047] In one embodiment, please refer to the reference Figure 6 The water inlet pipe 232 has an inlet 2321 that communicates with the heat exchange chamber 2311, and the height of the inlet 2321 is H1; the water outlet pipe 233 has an outlet 2331 that communicates with the heat exchange chamber 2311, and the height of the outlet 2331 is H2; wherein, H2>H1.

[0048] The inlet pipe 232 is connected to the heat exchange chamber 2311 through the inlet 2321, and the outlet pipe 233 is connected to the heat exchange chamber 2311 through the outlet 2331. H2>H1, meaning the height of the outlet 2331 is greater than the height of the inlet 2321, facilitating the entry of cooling water into the heat exchange chamber 2311 and allowing it to hold more cooling water. This also facilitates the flow and replacement of cooling water within the heat exchange chamber 2311. In a preferred embodiment, the height of the outlet 2331 is slightly lower than the height of the heat exchange section 231, fully utilizing the heat exchange chamber 2311 to improve the cooling efficiency of the heat exchange section 231 for the battery 225.

[0049] In one embodiment, please refer to the reference Figure 3 A thermally conductive protective layer 234 is provided on the side of the heat exchange section 231 near the battery 225.

[0050] Specifically, the thermally conductive protective film is a Teflon protective film, which has good thermal conductivity to facilitate heat exchange between the heat exchange unit 231 and the battery 225. Furthermore, by providing a thermally conductive protective film on the heat exchange unit 231, scratches on the surface of the battery 225 are prevented, making the use of the heat exchange unit 231 more convenient.

[0051] In one embodiment, please refer to the reference Figure 3 The heat exchange section 231 has a connecting ear 2312, which is detachably connected to the base assembly 21 by fasteners.

[0052] Connecting ears 2312 are formed at both ends of the heat exchange section 231, extending vertically. Specifically, the fasteners are bolts, which are readily available and easy to install. The connecting ears 2312 are detachably connected to the base assembly 21 via the fasteners, making the connection between the heat exchange section 231 and the base assembly 21 more stable and reliable. Furthermore, the detachable connection facilitates replacement of the water-cooling assembly 23 after wear, improving the flexibility of its use.

[0053] In one embodiment, please refer to the reference Figure 3 A temperature sensor is installed on the base assembly 21.

[0054] The temperature inside the rapid cooling box 100 for vacuum drying of lithium batteries is detected by a temperature sensor. Based on the temperature inside the rapid cooling box 100 for vacuum drying of lithium batteries, the cooling speed is adjusted by controlling parameters such as the flow rate of the water inlet 2321, the temperature of the cooling water in the water inlet pipe 232, the air speed of the air inlet 311, and the cooling efficiency of the condenser 33, so as to meet the production cycle requirements of the battery 225 production line.

[0055] In one embodiment, please refer to the reference Figure 3 The base assembly 21 is equipped with a micro-motion sensor 211, which is used to detect the vertical position of the tray 22.

[0056] By setting a micro-motion sensor 211 to detect the vertical position of the tray 22, it is possible to determine whether the battery 225 is in contact with the heat exchange section 231, as well as the opening and closing of the sealing door mechanism 40 of the lithium battery vacuum drying rapid cooling box 100 and the feeding and discharging of the battery 225, thereby improving the stability and reliability of the lithium battery vacuum drying rapid cooling box 100.

[0057] In one embodiment, please refer to the reference Figure 2 The air circulation mechanism 30 also includes an air guide assembly 34, which includes a support 341 and at least two air guide plates 342. The support 341 forms an air guide cavity 343 that communicates with the receiving cavity 11. The support 341 has an air inlet 344. The air guide cavity 343 is connected to the air inlet 311 or the air outlet 321 through the air inlet 344. At least two air guide plates 342 are spaced apart in the air guide cavity 343 and divide the air guide cavity 343 into multiple air distribution cavities 345.

[0058] The number of air guiding components 34 can be flexibly adjusted according to actual needs, and the present invention does not limit the number of air guiding components 34. In a preferred embodiment, each air inlet 311 and air outlet 321 is provided with an air guiding component 34. The support 341 forms an air guiding cavity 343, which is connected to the receiving cavity 11. One end of the support 341 is provided with an air inlet 344, and the air guiding cavity 343 is connected to the air inlet 311 or the air outlet 321 through the air inlet 344. At least two air guiding plates 342 are spaced apart in the air guiding cavity 343 in the left-right direction, and divide the air guiding cavity 343 into multiple air distribution cavities 345. Specifically, the air guiding plate 342 includes a first connecting section and a second connecting section connected and arranged at an angle. The first connecting section is connected to the air inlet pipe 31 or the air outlet pipe 32, and at least two first connecting sections divide the air inlet 311 or the air outlet 321 into at least three segments. By setting the air guide plate 342, air can enter and exit the air circulation mechanism 30 evenly and stably, making the cooling of the battery 225 more uniform. The number of air guide plates 342 in each air guide assembly 34 can be flexibly adjusted according to actual needs, and the present invention does not limit the number of air guide plates 342.

[0059] In a preferred embodiment, the air guide assembly 34 further includes a perforated plate, which is connected to the bracket 341. The perforated plate has multiple through holes that communicate with the air guide cavity 343. By setting the perforated plate, the air circulation becomes more stable and uniform.

[0060] In one embodiment, please refer to the reference Figure 7 The lithium battery vacuum drying rapid cooling box 100 also includes a sealing door mechanism 40. The sealing door mechanism 40 includes a door body 41 and a drive assembly. The drive assembly includes a drive element 42, a mounting bracket 43 and a connecting arm 44. The mounting bracket 43 is connected to the frame 10. The drive element 42 is connected to the mounting bracket 43. The connecting arm 44 has a hinge portion 441 that is hinged to the mounting bracket 43. The connecting arm 44 is connected between the output end of the drive element 42 and the door body 41. The door body 41 is used to open or close the receiving cavity 11.

[0061] The mounting bracket 43 is installed and fixed by connecting to the frame 10. Specifically, the driving component 42 is a cylinder, which has the advantage of stable transmission. The driving component 42 is connected to the mounting bracket 43 to achieve its installation and fixation. One end of the connecting arm 44 is connected to the output end of the driving component 42, and a hinge portion 441 is formed in the middle of the connecting arm 44. The hinge portion 441 is hinged to the mounting bracket 43 and can rotate relative to the mounting bracket 43. The other end of the connecting arm 44 is connected to the door 41. The driving component 42 pushes the connecting arm 44, causing the hinge portion 441 to rotate relative to the mounting bracket 43. The connecting arm 44 drives the door 41 to rotate, so that the door 41 opens or closes the receiving cavity 11, facilitating the loading and unloading of the tray 22 and the battery 225. By setting the sealing door mechanism 40, the sealing performance of the battery rapid cooling box 100 for lithium battery vacuum drying is ensured, which makes the cooling effect of the air circulation mechanism 30 on the battery 225 better.

[0062] In one embodiment, please refer to the reference Figure 7 There are two drive components, which are located on both sides of the door body 41, and a synchronous shaft 45 is connected between the two hinge parts 441.

[0063] Two drive components are located on the left and right sides of the door body 41 respectively. The synchronous shaft 45 is connected between the two hinge parts 441. By setting the synchronous shaft 45, the two connecting arms 44 are ensured to rotate synchronously, thereby improving the stability and reliability of the sealing door mechanism 40.

[0064] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A rapid cooling box for vacuum drying of lithium batteries, characterized in that, The rapid cooling box for lithium battery vacuum drying includes: A frame having a receiving cavity; A water-cooling mechanism includes a base assembly, a tray, and a water-cooling component. The base assembly is located within the receiving cavity, and the water-cooling component is disposed on the base assembly. The water-cooling component includes a heat exchange section, an inlet pipe, and an outlet pipe. The heat exchange section forms a heat exchange chamber, and both the inlet pipe and the outlet pipe are connected to the heat exchange chamber. The tray is placed on the heat exchange section and is used to install a battery. The heat exchange section is used to exchange heat with the battery. The tray includes a frame and a plurality of connecting rods extending along a first direction. The plurality of connecting rods are all connected to the frame and spaced apart along a second direction. The connecting rods are installed and fixed by connecting to the frame. The first direction and the second direction are perpendicular to each other. An installation space is formed between any two adjacent connecting rods. The installation space is used to place the battery. Abutment portions are formed on both sides of the connecting rods. The abutment portions extend along the direction close to the installation space. The abutment portions are flush with the heat exchange portion in the vertical direction so that the battery can abut against the heat exchange portion for heat exchange. An air circulation mechanism includes an air inlet duct, an air outlet duct, and a condenser. The condenser is connected between the air inlet duct and the air outlet duct. The air inlet duct has an air inlet, and the air outlet duct has an air outlet. Both the air inlet and the air outlet are connected to the receiving cavity. The water inlet pipe has an inlet that communicates with the heat exchange chamber, and the height of the inlet is H1; the water outlet pipe has an outlet that communicates with the heat exchange chamber, and the height of the outlet is H2; wherein, H2>H1.

2. The rapid cooling box for lithium battery vacuum drying as described in claim 1, characterized in that, Each of the connecting rods is provided with a plurality of partition blocks, which are spaced apart along the first direction. Each partition block has a stop notch, which is used to stop the battery.

3. The rapid cooling box for lithium battery vacuum drying as described in claim 1, characterized in that, The number of water-cooling components is multiple, and the multiple water-cooling components are arranged at intervals, with the water inlet pipe and water outlet pipe of each water-cooling component being staggered.

4. The rapid cooling box for lithium battery vacuum drying as described in claim 1, characterized in that, The heat exchange section is provided with a thermally conductive protective layer on the side closest to the battery; and / or, The heat exchange section is provided with connecting lugs, which are detachably connected to the base assembly via fasteners.

5. The rapid cooling box for lithium battery vacuum drying as described in any one of claims 1 to 3, characterized in that, A temperature sensor is provided on the base assembly; and / or, The base assembly is equipped with a micro-motion sensor, which is used to detect the vertical position of the tray.

6. The rapid cooling box for lithium battery vacuum drying as described in any one of claims 1 to 3, characterized in that, The air circulation mechanism further includes an air guide assembly, which includes a support and at least two air guide plates. The support forms an air guide cavity that communicates with the receiving cavity. The support has an air inlet. The air guide cavity communicates with the air inlet or the air outlet through the air inlet. At least two air guide plates are spaced apart in the air guide cavity and divide the air guide cavity into multiple air distribution cavities.

7. The rapid cooling box for lithium battery vacuum drying as described in any one of claims 1 to 3, characterized in that, The rapid cooling box for vacuum drying of lithium batteries also includes a sealing door mechanism. The sealing door mechanism includes a door body and a drive assembly. The drive assembly includes a drive component, a mounting bracket, and a connecting arm. The mounting bracket is connected to the frame, and the drive component is connected to the mounting bracket. The connecting arm has a hinge portion that is hinged to the mounting bracket. The connecting arm is connected between the output end of the drive component and the door body. The door body is used to open or close the receiving cavity.

8. The rapid cooling box for lithium battery vacuum drying as described in claim 7, characterized in that, The number of drive components is two, and the two drive components are respectively located on both sides of the door body, and a synchronous shaft is connected between the two hinge parts.

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