Moisture-proof device for lithium battery of electric vehicle

Abstract

The utility model relates to the technical field of electric vehicle lithium batteries, and discloses a moisture-proof device for an electric vehicle lithium battery, which comprises a placing box, a moisture-proof mechanism is arranged on the inner side of the placing box, a battery main body is arranged in the moisture-proof mechanism, and fixing mechanisms are arranged on the left side and the right side of the moisture-proof mechanism. The moisture-proof mechanism comprises an air filtering assembly, a ventilation assembly, a closing assembly and an exhaust assembly, and the air filtering assembly is arranged in the containing box. According to the moisture-proof device for the lithium battery of the electric vehicle, through the arranged moisture-proof mechanism, external air enters a placement box through an air inlet sieve plate, is filtered by a filter element and then penetrates through a partition plate through a ventilation sieve plate to be in contact with a battery main body; and then the air subjected to heat exchange is discharged through an air outlet sieve plate I and an air outlet sieve plate II to finish ventilation treatment on the battery main body in the placement box, and a filter element is arranged to filter external air entering the placement box, so that dust and water vapor in the air cannot be in contact with the battery main body.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries for electric vehicles, in particular to a moisture-proof device for lithium batteries for electric vehicles. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. The use of electric vehicles is indispensable for lithium batteries. As the use of electric vehicles becomes more and more popular, the use of lithium batteries is also increasing. Lithium batteries need to be used and stored correctly during use. If they are not properly protected, it is easy to cause safety hazards. Lithium battery moisture is one of them. If the lithium battery is damp, it will seriously affect the battery life, the power will drop significantly, and it may even cause battery short circuit, fire and other hazards.

[0003] According to the "A moisture-proof device for lithium batteries in electric vehicles (publication number: CN 219716970 U; application number: 202320143365.4)" published on the patent website, the above application optimizes the problem that "in the prior art, lithium batteries themselves do not have a moisture-proof function. They are mainly placed in a closed space for moisture-proofing during storage. However, when in use, the lithium batteries need to be taken out of the closed space, and the lithium batteries cannot be moisture-proofed at this time." The internal battery storage environment is ventilated by the entry and circulation of external airflow to keep the battery dry. However, when the moisture-proof device in the above application is in use, external air directly enters the device without treatment and contacts the battery. When the humidity of the external environment increases, the entry of external air will not only not reduce the humidity of the battery storage environment, but will also increase the humidity inside the device, resulting in the device in the above application having high requirements for the external environment when in use, which is inconvenient for staff to use. Utility Model Content

[0004] The purpose of the utility model is to provide a moisture-proof device for lithium batteries of electric vehicles to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a moisture-proof device for electric vehicle lithium batteries, comprising a placement box, a moisture-proof mechanism is arranged inside the placement box, a battery body is arranged inside the moisture-proof mechanism, and fixing mechanisms are arranged on the left and right sides of the moisture-proof mechanism.

[0006] The moisture-proof mechanism includes an air filter component, a ventilation component, a closing component and an exhaust component. The air filter component is arranged in the placement box, the ventilation component is arranged on the front and back sides of the placement box, the closing component is arranged on the top of the placement box, and the exhaust component is arranged on the top of the closing component.

[0007] The fixing mechanism includes a clamping component and a positioning component. The clamping component is arranged on the left and right sides of the placement box, and the positioning component is arranged on the left and right sides of the closing component.

[0008] Preferably, the air filtering component includes a plug, which is fixedly connected to the inner bottom of the placement box. The plug is clamped inside the bottom of the battery body. Partition plates are fixedly connected to the positions on the left and right sides of the battery body inside the placement box. The partition plates are fixedly connected inside the placement box, and a filter element is arranged at the position without the plug between the partition plates.

[0009] Preferably, the air ventilation component includes an intake sieve plate, which is fixedly connected to the top of the front and rear sides of the placement box corresponding to the position of the filter element. An air ventilation sieve plate is arranged inside the intake sieve plate, and the air ventilation sieve plate is fixedly connected to the bottom surface of the partition plate.

[0010] Preferably, the closing component includes a sealing top cover, which is clamped inside the top of the placement box. The bottom of the sealing top cover is attached to the top of the partition plate. A sleeve is fixedly connected to the top of the sealing top cover, and the sleeve is sleeved on the outer top of the placement box. Empty slots are opened at the positions corresponding to the intake sieve plate on the front and rear sides of the sleeve.

[0011] Preferably, the exhaust component includes a fixed box, which is fixedly connected to the top of the sealing top cover corresponding to the position of the battery body. An exhaust fan is fixedly connected inside the fixed box. An air outlet sieve plate one is fixedly connected to the inner bottom of the fixed box, and an air outlet sieve plate two is fixedly connected to the inner top of the fixed box.

[0012] Preferably, the clamping component includes a clamping seat, which is fixedly connected to the left and right sides of the placement box. The clamping seat is clamped inside the bottom of the left and right sides of the sleeve, and a fixing block is fixedly connected to the outside of the clamping seat.

[0013] Preferably, the positioning component includes a fixed cylinder, which is fixedly connected to the left and right sides of the sleeve. Sliding cylinders are slidably connected to the front and rear sides inside the fixed cylinder. A positioning clamping rod is fixedly connected to the outside of the sliding cylinder, and the positioning clamping rod is clamped inside the inner ring of the fixing block. A compression spring is fixedly connected inside the sliding cylinder, and a lever is fixedly connected to the bottom of the sliding cylinder. The lever is slidably connected to the inner bottom of the fixed cylinder.

[0014] Compared with the prior art, the utility model provides a moisture-proof device for an electric vehicle lithium battery, which has the following beneficial effects:

[0015] 1. The moisture-proof device for the lithium battery of the electric vehicle, through the provided moisture-proof mechanism, the external air enters the placement box through the intake sieve plate, is filtered by the filter element, then passes through the ventilation sieve plate through the partition to contact the battery body. After that, the air that has completed heat exchange is discharged through the first exhaust sieve plate and the second exhaust sieve plate to complete the ventilation treatment of the battery body in the placement box. The filter element is set to filter the external air entering the placement box, so that the dust and water vapor in the air cannot contact the battery body. The up-and-down position design of the intake sieve plate and the ventilation sieve plate increases the path length of the external air entering the filter element, enabling the external air entering the placement box to fully contact the filter element, improving the filtering effect on impurities in the external environment, and ensuring the dryness and cleanliness of the storage environment of the battery body in the placement box. The filter element filters the air, and the dust and water vapor in the external air are blocked, making the air continuously contacting the battery body as dry as possible, improving the efficiency of the air carrying water vapor when passing through the battery body, so that the device does not need to consider factors such as humidity in the external environment during use, which is convenient for the staff to use.

[0016] 2. The moisture-proof device for the lithium battery of the electric vehicle, through the provided fixing mechanism, the staff only needs to move the lever rods on the front and rear sides inward to drive the positioning latch rods on the front and rear sides to move inward to release the connection with the fixing block, enabling the staff to quickly complete the disassembly and assembly of the sealing top cover, facilitating the staff to take or place the battery body placed in the placement box, and the operation is simple and convenient for the staff to use. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings:

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 It is an exploded view of the present invention;

[0020] Figure 3 It is an exploded view of a part of the structure of the present invention;

[0021] Figure 4 It is an exploded view of a part of the exhaust assembly;

[0022] Figure 5 It is an exploded view of a part of the fixing mechanism.

[0023] In the figure: 1. Moisture-proof mechanism; 11. Air-filtering component; 1101. Plug; 1102. Partition board; 1103. Filter element; 12. Ventilation component; 1201. Air intake sieve plate; 1202. Ventilation sieve plate; 13. Closing component; 1301. Sealing top cover; 1302. Sheath; 1303. Empty slot; 14. Exhaust component; 1401. Fixed box; 1402. Exhaust fan; 1403. First air outlet sieve plate; 1404. Second air outlet sieve plate; 2. Fixing mechanism; 21. Positioning component; 2101. Card seat; 2102. Fixed block; 22. Positioning component; 2201. Fixed cylinder; 2202. Slide cylinder; 2203. Positioning latch; 2204. Compression spring; 2205. Lever; 3. Placing box; 4. Battery body. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The present invention provides a technical solution:

[0027] Embodiment 1

[0028] Combined with Figures 1 to 5 , a moisture-proof device for an electric vehicle lithium battery includes a placing box 3. A moisture-proof mechanism 1 is arranged inside the placing box 3, a battery body 4 is arranged inside the moisture-proof mechanism 1, and fixing mechanisms 2 are arranged on the left and right sides of the moisture-proof mechanism 1.

[0029] The moisture-proof mechanism 1 includes an air-filtering component 11, a ventilation component 12, a closing component 13 and an exhaust component 14. The air-filtering component 11 is arranged inside the placing box 3, the ventilation component 12 is arranged on the front and back sides of the placing box 3, the closing component 13 is arranged on the top of the placing box 3, and the exhaust component 14 is arranged on the top of the closing component 13.

[0030] The air filter component 11 includes a plug 1101 which is fixedly connected to the inner bottom of the placement box 3. The plug 1101 is snap-fitted into the bottom of the battery body 4. Partition plates 1102 are fixedly connected to the left and right sides of the battery body 4 inside the placement box 3. The partition plates 1102 are fixedly connected to the inside of the placement box 3. A filter element 1103 is arranged at the position between the partition plates 1102 where there is no plug 1101. The ventilation component 12 includes an intake sieve plate 1201 which is fixedly connected to the top of the front and rear sides of the placement box 3 corresponding to the position of the filter element 1103. An air ventilation sieve plate 1202 is arranged inside the intake sieve plate 1201. The air ventilation sieve plate 1202 is fixedly connected to the bottom surface of the partition plate 1102. The closing component 13 includes a sealing top cover 1301 which is snap-fitted into the top of the placement box 3. The bottom of the sealing top cover 1301 is in contact with the top of the partition plate 1102. A sleeve 1302 is fixedly connected to the top of the sealing top cover 1301. The sleeve 1302 is sleeved on the outer top of the placement box 3. Empty slots 1303 are provided at the front and rear sides of the sleeve 1302 corresponding to the position of the intake sieve plate 1201. The exhaust component 14 includes a fixed box 1401 which is fixedly connected to the top of the sealing top cover 1301 corresponding to the position of the battery body 4. An exhaust fan 1402 is fixedly connected inside the fixed box 1401. An air outlet sieve plate one 1403 is fixedly connected to the inner bottom of the fixed box 1401. An air outlet sieve plate two 1404 is fixedly connected to the inner top of the fixed box 1401.

[0031] Furthermore: External air enters the placement box 3 through the intake sieve plate 1201, passes through the filter element 1103 for filtration, then passes through the air ventilation sieve plate 1202 and through the partition plate 1102 to contact the battery body 4. After that, the air that has completed heat exchange is discharged through the air outlet sieve plate one 1403 and the air outlet sieve plate two 1404 to complete the ventilation process of the battery body 4 in the placement box 3. The setting of the filter element 1103 filters the external air entering the placement box 3, preventing dust and water vapor in the air from contacting the battery body 4. The up-and-down position design of the intake sieve plate 1201 and the air ventilation sieve plate 1202 increases the path length of the external air entering the filter element 1103, enabling the external air entering the placement box 3 to fully contact the filter element 1103, improving the filtering effect on impurities in the external environment, and ensuring the dryness and cleanliness of the storage environment of the battery body 4 in the placement box 3. The filter element 1103 filters the air, blocking dust and water vapor in the external air, making the air continuously contacting the battery body 4 as dry as possible, improving the efficiency of the air carrying water vapor when passing through the battery body 4, so that the device does not need to consider factors such as humidity in the external environment during use, facilitating the use by the staff.

[0032] Embodiment Two

[0033] Refer to Figure 1 、 Figure 2 、 Figure 4 andFigure 5 On the basis of Embodiment 1, it is further obtained that the fixing mechanism 2 includes a clamping component 21 and a positioning component 22. The clamping component 21 is arranged on the left and right sides of the placement box 3, and the positioning component 22 is arranged on the left and right sides of the closing component 13.

[0034] The clamping component 21 includes a clamping seat 2101. The clamping seat 2101 is fixedly connected to the left and right sides of the placement box 3. The clamping seat 2101 is clamped inside the bottom of the left and right sides of the sleeve 1302. A fixing block 2102 is fixedly connected to the outside of the clamping seat 2101. The positioning component 22 includes a fixing cylinder 2201. The fixing cylinder 2201 is fixedly connected to the left and right sides of the sleeve 1302. A sliding cylinder 2202 is slidably connected to the front and rear sides inside the fixing cylinder 2201. A positioning clamping rod 2203 is fixedly connected to the outside of the sliding cylinder 2202. The positioning clamping rod 2203 is clamped inside the inner ring of the fixing block 2102. A compression spring 2204 is fixedly connected inside the sliding cylinder 2202. A lever 2205 is fixedly connected to the bottom of the sliding cylinder 2202. The lever 2205 is slidably connected to the inside of the bottom of the fixing cylinder 2201.

[0035] Furthermore: The staff only needs to move the levers 2205 on the front and rear sides inward to drive the positioning clamping rods 2203 on the front and rear sides to move inward to release the connection with the fixing block 2102, so that the staff can quickly complete the disassembly and assembly of the sealing top cover 1301, which is convenient for the staff to take or place the battery body 4 placed in the placement box 3, and the operation is simple and convenient for the staff to use.

[0036] During the actual operation process, when this device is in use, the exhaust fan 1402 starts to pump the air in the placement box 3 upward and discharge it. The upward discharge of the air in the placement box 3 reduces the air pressure in the placement box 3, creating a negative pressure in the placement box 3. Then the placement box 3 inhales the external air through the air inlet sieve plate 1201. The air entering the placement box 3 through the air inlet sieve plate 1201 passes through the filter element 1103 and then through the ventilation sieve plate 1202 to contact the battery body 4. After that, the air contacts the battery body 4 and then is discharged through the air outlet sieve plate one 1403 and the air outlet sieve plate two 1404. In this way, the moisture-proof treatment of the battery body 4 is completed;

[0037] When it is necessary to take the battery body 4, the staff first move the lever 2205 on the front and back sides inward. The inward movement of the lever 2205 drives the positioning latch 2203 to move inward through the sliding cylinder 2202. The positioning latches 2203 on the front and back sides move inward and retract into the fixed cylinder 2201 to release the connection with the fixed block 2102. After that, the staff can move the sleeve 1302 upward. The upward movement of the sleeve 1302 drives the sealing top cover 1301 to move upward until the sealing top cover 1301 and the sleeve 1302 are separated from the placement box 3. After that, the staff can take the battery body 4 placed in the placement box 3. The battery body 4 moves upward to be separated from the connection of the plug 1101 and the placement box 3. At this time, the taking work of the battery body 4 is completed.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A moisture-proof device for an electric vehicle lithium battery, comprising a placement box (3), characterized in that: A moisture-proof mechanism (1) is arranged inside the placement box (3), a battery body (4) is arranged inside the moisture-proof mechanism (1), and fixing mechanisms (2) are arranged on the left and right sides of the moisture-proof mechanism (1); The moisture-proof mechanism (1) includes a gas filtering component (11), a ventilation component (12), a closing component (13) and an exhaust component (14). The gas filtering component (11) is arranged inside the placement box (3), the ventilation component (12) is arranged on the front and back sides of the placement box (3), the closing component (13) is arranged on the top of the placement box (3), and the exhaust component (14) is arranged on the top of the closing component (13); The fixing mechanism (2) includes a clamping component (21) and a positioning component (22). The clamping component (21) is arranged on the left and right sides of the placement box (3), and the positioning component (22) is arranged on the left and right sides of the closing component (13).

2. The moisture-proof device for an electric vehicle lithium battery according to claim 1, characterized in that: The gas filtering component (11) includes a plug (1101). The plug (1101) is fixedly connected to the inner bottom of the placement box (3), and the plug (1101) is clamped inside the bottom of the battery body (4). Partition plates (1102) are fixedly connected to the positions on the left and right sides of the battery body (4) inside the placement box (3).

3. The moisture-proof device for an electric vehicle lithium battery according to claim 2, characterized in that: The partition plates (1102) are fixedly connected inside the placement box (3), and a filter element (1103) is arranged at the position between the partition plates (1102) where there is no plug (1101).

4. The moisture-proof device for an electric vehicle lithium battery according to claim 1, wherein: The ventilation component (12) includes an air inlet sieve plate (1201). The air inlet sieve plate (1201) is fixedly connected to the top of the front and back sides of the placement box (3) corresponding to the position of the filter element (1103). An air ventilation sieve plate (1202) is arranged inside the air inlet sieve plate (1201), and the air ventilation sieve plate (1202) is fixedly connected to the bottom surface of the partition plate (1102).

5. The moisture-proof device for an electric vehicle lithium battery according to claim 1, wherein: The closing component (13) includes a sealing top cover (1301). The sealing top cover (1301) is clamped inside the top of the placement box (3). The bottom of the sealing top cover (1301) is attached to the top of the partition plate (1102), and a sleeve (1302) is fixedly connected to the top of the sealing top cover (1301).

6. The moisture-proof device for an electric vehicle lithium battery according to claim 5, wherein: The sleeve (1302) is sleeved on the outer circle of the top of the placement box (3), and empty slots (1303) are formed at the front and back sides of the sleeve (1302) corresponding to the position of the air inlet sieve plate (1201).

7. The moisture-proof device for an electric vehicle lithium battery according to claim 1, wherein: The exhaust component (14) includes a fixed box (1401). The fixed box (1401) is fixedly connected to the top of the sealing top cover (1301) corresponding to the position of the battery body (4). An exhaust fan (1402) is fixedly connected inside the fixed box (1401), an air outlet sieve plate one (1403) is fixedly connected to the inner bottom of the fixed box (1401), and an air outlet sieve plate two (1404) is fixedly connected to the inner top of the fixed box (1401).

8. The moisture-proof device for an electric vehicle lithium battery according to claim 1, wherein: The clamping component (21) includes a clamping seat (2101). The clamping seat (2101) is fixedly connected to the left and right sides of the placement box (3), the clamping seat (2101) is clamped inside the bottom of the left and right sides of the sleeve (1302), and a fixing block (2102) is fixedly connected to the outside of the clamping seat (2101).

9. The moisture-proof device for an electric vehicle lithium battery according to claim 1, characterized in that: The positioning component (22) includes a fixed cylinder (2201), the fixed cylinder (2201) is fixedly connected to the left and right sides of the sleeve (1302), a sliding cylinder (2202) is slidably connected to the front and rear sides inside the fixed cylinder (2201), a positioning latch (2203) is fixedly connected to the outer side of the sliding cylinder (2202), and the positioning latch (2203) is clamped into the inner ring of the fixed block (2102).

10. The moisture-proof device for an electric vehicle lithium battery according to claim 9, wherein: A compression spring (2204) is fixedly connected inside the sliding cylinder (2202), a dial rod (2205) is fixedly connected to the bottom of the sliding cylinder (2202), and the dial rod (2205) is slidably connected to the inside of the bottom of the fixed cylinder (2201).

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