Evaporative liquid cooling constant temperature cabinet for lithium battery charging and discharging test

Abstract

The invention discloses an evaporative liquid cooling constant temperature cabinet for lithium battery charging and discharging test, and belongs to the technical field of lithium battery test constant temperature cabinets. An evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge test comprises a cabinet body and a cooling-water machine, a second cross-flow fan is arranged on the inner wall of a cavity, an evaporation assembly is arranged in the cavity, a plurality of liquid cooling assemblies are arranged on the inner wall of the right side of a mounting frame, and each liquid cooling assembly comprises a condensate water collecting plate. The top of each condensate water collecting plate is provided with a first liquid cooling plate heat exchanger and a second liquid cooling plate heat exchanger, the top of each first liquid cooling plate heat exchanger and the top of each second liquid cooling plate heat exchanger are provided with a battery pack, and the cold plate type liquid cooling system is combined with the air cooling system, so that rapid cooling and accurate temperature control of the battery packs can be achieved; through combination of the evaporation cotton evaporation system and the ultrasonic atomization device, timely and rapid evaporation of condensed water can be realized, the cooling capacity of the liquid cooling plate is fully utilized, air in the cabinet is rapidly cooled, and the fins can be cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery testing constant temperature cabinets, and more specifically to an evaporative liquid cooling constant temperature cabinet for lithium battery charging and discharging testing. Background Art

[0002] Lithium battery charge and discharge testing is a key means of evaluating lithium battery performance. It is like a precise ruler that measures battery capacity, life and other indicators. It monitors changes in parameters such as voltage, current, and time during charging, and grasps its capacity and voltage changes and performance under different loads during discharge. Cycle testing is related to the long-term life of the battery.

[0003] The constant temperature cabinet for lithium battery charge and discharge test is a crucial device in the process of lithium battery charge and discharge test. It can accurately maintain the stability of the internal environment temperature through advanced temperature control technology, creating ideal conditions for lithium battery charge and discharge test. In this constant temperature cabinet, whether it is the observation of changes in battery voltage, current and other parameters during the complex charging process, or the evaluation of battery capacity and performance during the discharge stage, it will not be disturbed by external temperature fluctuations. It is like a reliable guardian, ensuring that lithium batteries are charged and discharged at a stable temperature, thereby ensuring the accuracy and reliability of test data, and plays an indispensable role in the research and development, quality inspection and performance optimization of lithium batteries.

[0004] However, the traditional lithium battery pack test cabinet uses an air cooling system, which results in relatively low temperatures near the air outlet and relatively high temperatures far from the air outlet. The temperature unevenness is more obvious, and the air cooling system is greatly affected by the ambient temperature. When the ambient temperature is high, the heat dissipation effect of the battery pack is poor. The temperature fluctuates greatly during the battery pack test, which cannot meet the purpose of precise temperature control. Secondly, in actual use, due to the large temperature fluctuations during battery pack testing, condensed water is often generated. Most existing devices simply discharge the condensed water directly in liquid form, but this will undoubtedly cause a series of serious problems. On the one hand, the random discharge of liquid condensed water may soak the electrical components and circuits around the battery pack, which is like burying a "mine" in the electrical system, greatly increasing the risk of short circuits, which may cause electrical failures and paralyze the entire test system, seriously affecting the normal progress of the test. In addition, manpower is frequently required to clean up the condensed water. Although the condensed water is less, it will still increase the labor intensity of the personnel; Moreover, when existing constant temperature devices perform constant temperature control on batteries of various models, cooling is often not timely. Some batteries often generate abnormal heat during the test process. Simple air cooling and water cooling methods often have slow cooling efficiency and are difficult to quickly cool down the heated batteries in time, which undoubtedly has a great impact on the test.

[0005] And in actual use, the existing lithium battery pack test cabinets often have a thorny problem. During its operation, due to the influence of factors such as internal temperature and humidity changes, more condensed water is often generated. This condensed water is very easy to gather on the fins used for heat dissipation. As a key component of the heat dissipation system, the fins should be kept in good working condition. However, whenever the battery pack is placed or taken out, in this seemingly ordinary process, some impurities will inevitably be brought into the test cabinet. These impurities may come from dust and tiny particles in the surrounding environment. They will fall on the heat dissipation fins. When these impurities and dust come into contact with the condensed water, they will not disappear as the condensed water evaporates, but will instead accumulate in the heat dissipation fins. The fin surface is firmly attached. Over time, as time goes by and this situation continues to accumulate, a layer of dirt will gradually form on the fin. The existence of this layer of dirt has a serious negative impact on the heat dissipation efficiency of the battery pack during charging. The dirt can easily hinder the effective conduction of heat, making the heat dissipation fins unable to function normally. In this way, in order to ensure that the battery pack can be charged and discharged at a suitable temperature, more cold sources are required to control the temperature of the battery pack at a constant temperature. This not only increases energy consumption and costs, but may also cause the stability of the entire test system to decrease, which undoubtedly brings great troubles to actual use and seriously affects the normal development and efficiency improvement of lithium battery pack testing.

[0006] In view of this, we propose an evaporative liquid-cooled constant temperature cabinet for lithium battery charge and discharge testing. Summary of the invention

[0007] 1. Technical problems to be solved The object of the present invention is to provide an evaporative liquid-cooled constant temperature cabinet for lithium battery charge and discharge testing to solve the problems raised in the above background technology.

[0008] 2. Technical solution

[0009] An evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing, comprising a cabinet and a water chiller, wherein a controller is arranged on the side wall of the cabinet, a sliding door is connected to the front outer wall of the cabinet by a pin shaft, a fixing plate is arranged inside the cabinet, a mounting frame is arranged on the side wall of the fixing plate, a cavity is arranged on the left side of the fixing plate, a circulating air duct is arranged on the right side of the mounting frame, a cross flow fan 1 is arranged on the inner wall of the circulating air duct, a cross flow fan 2 is arranged on the inner wall of the cavity, and an evaporative The evaporation component includes a water collecting tank 1 and a water collecting tank 2, and a water receiving pipe is connected between the water collecting tank 1 and the water collecting tank 2. A plurality of liquid cooling components are arranged on the inner wall on the right side of the mounting frame. The plurality of liquid cooling components include a condensing water collecting plate, and a liquid cooling plate heat exchanger 1 and a liquid cooling plate heat exchanger 2 are arranged on the top of the plurality of condensing water collecting plates. Battery packs are arranged on the top of the liquid cooling plate heat exchanger 1 and the liquid cooling plate heat exchanger 2, and a water pipe is connected between the liquid cooling plate heat exchanger 1 and the liquid cooling plate heat exchanger 2.

[0010] Preferably, an air inlet is provided on the right inner wall of the mounting frame, and an air outlet is provided at the bottom of the mounting frame.

[0011] Preferably, an ultrasonic atomizer and a water level sensor are arranged inside the water collecting tank one, and a cross-flow fan three is arranged on the outer wall of the water collecting tank one.

[0012] Preferably, a connecting frame is provided inside the second water collecting tank, and evaporating cotton is provided inside the connecting frame.

[0013] Preferably, a trough body is provided on the top of the plurality of condensate collecting plates, fins are provided on the inner wall of the trough body, a cleaning assembly is also provided on the inner wall of the trough body, and the cleaning assembly includes a fixing rod.

[0014] Preferably, the circumferential outer wall of the fixing rod is provided with grooves, a plurality of the inner walls of the grooves are rotatably connected with balls, an inner sleeve is rotatably sleeved inside the grooves, a rotating ring is provided on the circumferential outer wall of the inner sleeve, a cleaning plate is provided on the circumferential outer wall of the rotating ring, and the plurality of cleaning plates are respectively in slight contact with the outer walls of the fins.

[0015] Preferably, the bottoms of the plurality of condensate water collecting plates are inclined, the outer walls of the plurality of condensate water collecting plates are provided with water guide pipes, and the outer walls of one side of the plurality of condensate water collecting plates are also provided with air inlet boxes.

[0016] Preferably, a through opening is provided on the side wall of the air inlet box, a connecting pipe is provided on the outer wall on the other side of the air inlet box, a plurality of connecting pipe ends are connected to curved air supply copper pipes, and the ends of the curved air supply copper pipes are connected to cooling vortex tubes.

[0017] Preferably, a water inlet pipe is provided on one side wall of the liquid-cooled plate heat exchanger, and the end of the water inlet pipe is connected to the water discharge end of the chiller. A drain pipe is provided on the second outer wall of the liquid-cooled plate heat exchanger, and the end of the drain pipe is connected to the return end of the chiller.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are: when performing charging test on the battery pack, the crossflow fan 1 can be started first, and at the same time, the external compressed gas is injected into the multiple cooling vortex tubes. Under this series of operations, the cooling vortex tubes will quickly generate strong cold wind. These cold winds carry low-temperature energy, laying the foundation for subsequent heat dissipation work, and the crossflow fan 1 will also simultaneously generate stable and continuous heat dissipation airflow. These two forces cooperate and work together. The cold wind generated by the multiple cooling vortex tubes is accurately blown to the multiple fins, effectively reducing their temperature, and the crossflow fan The generated wind flow will pass through multiple curved copper pipes with lower temperatures. The special curved structure of the curved copper pipes is like a winding low-temperature channel, so that the wind flow can fully contact with the low-temperature curved copper pipes when passing through them, so that the temperature of the wind flow can be significantly and stably reduced. Then, with the guidance of multiple designed air outlets and air inlets, internal circulation cooling is generated. Under this circulating cooling mechanism, multiple battery packs can be cooled evenly and quickly, and precise temperature control can be achieved according to preset parameters to ensure that the battery pack is always in a suitable temperature environment during the charging process. In addition, the chiller is connected to multiple liquid-cooled plate heat exchangers in the cabinet through a water inlet pipe. The liquid-cooled plate heat exchanger is directly below the battery pack and is used to cool the battery pack. There are fins directly below the multiple liquid-cooled plate heat exchangers. The fins face upward and are in direct contact with the liquid-cooled plate heat exchanger, which can guide the condensed water and guide the wind to optimize the air flow distribution in the air duct. The condensed water guided by the fins is first collected in the second water collection tank on the left side of the cabinet through the water guide pipe. The second water collection tank has evaporating cotton to absorb the condensed water. There is an axial flow fan on the inner wall of the cabinet on the left side of the evaporating cotton to absorb the evaporating cotton. The condensed water evaporates. In special cases, such as when the evaporation effect of the evaporating cotton is poor or there is too much condensed water, the excess water is introduced into the water collection tank 1. The water collection tank 1 has an ultrasonic atomization device that can convert water into tiny atomized particles. There is a cross-flow fan 3 on the left side of the water collection tank 1, which is responsible for discharging the atomized condensed water to keep the system in a balanced humidity. The ultrasonic atomization dehumidification device assists the evaporating cotton dehumidification system. The evaporating cotton evaporation component is combined with the ultrasonic atomizer to evaporate the condensed water in a timely and rapid manner to avoid the accumulation of condensed water in the system and cause problems. The fins and the internal circulation air duct can guide the internal circulation cold air when guiding the condensed water, and use the cooling capacity of the liquid cooling plate to avoid energy waste and improve the heat dissipation efficiency. The cold source generated by multiple cooling vortex tubes can cool down the battery pack with severe heat generation. When the high-power battery pack is abnormally hot, the cold source quickly cools it down. Through the composite heat dissipation method, the system can quickly reduce the temperature of the battery pack and stabilize it in the ideal range to ensure the safe charging and stable operation of the battery pack. The liquid cooling constant temperature cabinet and the chiller adopt a split connection design to meet the use requirements of different scenarios, whether it is small-scale laboratory testing or large-scale application of industrial production lines. Moreover, there are many benefits to having multiple cooling vortex tubes generate cold air flows blowing toward the fins. It can meet the battery constant temperature control requirements and can also use wind force to drive multiple rotating rings to rotate. When the rotating rings rotate, multiple cleaning plates arranged on the outer wall move accordingly. The cleaning plates use the centrifugal force and friction generated by the rotation and the condensed water on the fins to perform all-round cleaning of the fin surface, which can reduce the accumulation of impurities on the fins and prevent the formation of a dirt layer. The bottom of multiple condensate collection plates adopts an inclined design. Under the action of gravity, the condensed water can be more smoothly and quickly gathered into the second collection tank for evaporation, thereby improving the condensed water treatment process and ensuring stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cabinet structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 4 It is a schematic diagram of the structure of the evaporation component of the present invention; Figure 5 It is a schematic diagram of the structure of the liquid cooling component of the present invention; Figure 6 It is a schematic diagram of the structure of the condensate water collecting plate of the present invention; Figure 7 It is a schematic diagram of the structure of the cleaning component of the present invention; Figure 8 It is a schematic diagram of the installation structure of the rotating ring of the present invention; Explanation of reference numerals in the figure: 100, cabinet; 110, controller; 120, sliding door; 130, fixing plate; 140, mounting frame; 141, air outlet; 142, air inlet; 150, cavity; 160, circulation air duct; 161, crossflow fan 1; 170, crossflow fan 2; 200, water collection tank 1; 210, ultrasonic atomizer; 220, water level sensor; 230, crossflow fan 3; 240, water connection pipe; 250, water collection tank 2; 260, connecting frame; 261, steam Cotton; 300, condensate collecting plate; 310, liquid cooling plate heat exchanger 1; 311, water inlet pipe; 312, water pipe; 313, liquid cooling plate heat exchanger 2; 314, drain pipe; 320, air inlet box; 321, connecting pipe; 322, bent air supply copper pipe; 323, cooling vortex tube; 330, fin; 340, water guide pipe; 350, fixing rod; 351, slot; 352, ball bearing; 360, rotating ring; 361, internal sleeve; 362, cleaning plate; 400, chiller. DETAILED DESCRIPTION

[0021] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Please refer to the figure, the present invention provides a technical solution: An evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing, comprising a cabinet 100 and a chiller 400, a controller 110 is arranged on the side wall of the cabinet 100, a sliding door 120 is connected to the front outer wall of the cabinet 100 by a pin shaft, a fixing plate 130 is arranged inside the cabinet 100, a mounting frame 140 is arranged on the side wall of the fixing plate 130, a cavity 150 is arranged on the left side of the fixing plate 130, a circulating air duct 160 is arranged on the right side of the mounting frame 140, a cross flow fan 161 is arranged on the inner wall of the circulating air duct 160, a cross flow fan 2 170 is arranged on the inner wall of the cavity 150, and a Evaporation component, the evaporation component includes a water collecting tank 200 and a water collecting tank 250, a water receiving pipe 240 is connected between the water collecting tank 200 and the water collecting tank 250, a plurality of liquid cooling components are arranged on the right inner wall of the mounting frame 140, the plurality of liquid cooling components include a condensing water collecting plate 300, a liquid cooling plate heat exchanger 1 310 and a liquid cooling plate heat exchanger 2 313 are arranged on the top of the plurality of condensing water collecting plates 300, a battery pack 370 is arranged on the top of the liquid cooling plate heat exchanger 1 310 and the liquid cooling plate heat exchanger 2 313, and a water pipe 312 is connected between the liquid cooling plate heat exchanger 1 310 and the liquid cooling plate heat exchanger 2 313.

[0025] Specifically, an air inlet 142 is provided on the right inner wall of the mounting frame 140 , and an air outlet 141 is provided at the bottom of the mounting frame 140 , so as to facilitate circulating air cooling and effectively reduce energy loss.

[0026] Furthermore, an ultrasonic atomizer 210 and a water level sensor 220 are provided inside the water collection tank 200, and a cross-flow fan 230 is provided on the outer wall of the water collection tank 200 to facilitate evaporation of condensed water that is difficult to evaporate from the evaporating cotton 261.

[0027] Furthermore, a connecting frame 260 is provided inside the water collecting tank 250, and an evaporating cotton 261 is provided inside the connecting frame 260 to absorb the condensed water and accelerate the evaporation of the condensed water by utilizing the function of the evaporating cross-flow fan 170.

[0028] Furthermore, a groove body is provided on the top of the plurality of condensate collecting plates 300 , and a fin 330 is provided on the inner wall of the groove body. A cleaning assembly is also provided on the inner wall of the groove body, and the cleaning assembly includes a fixing rod 350 .

[0029] It is worth mentioning that a groove 351 is provided on the circumferential outer wall of the fixing rod 350, and a plurality of grooves 351 are rotatably connected to the inner walls with balls 352, an inner sleeve 361 is rotatably sleeved inside the groove 351, a rotating ring 360 is provided on the circumferential outer wall of the inner sleeve 361, and a cleaning plate 362 is provided on the circumferential outer wall of the rotating ring 360, and a plurality of cleaning plates 362 are respectively in slight contact with the outer wall of the fin 330, so as to facilitate the cleaning of impurities on the surface of the fin 330.

[0030] It is worth noting that the bottoms of the multiple condensate water collecting plates 300 are inclined, the outer walls of the multiple condensate water collecting plates 300 are provided with water guide pipes 340, and the outer walls of one side of the multiple condensate water collecting plates 300 are also provided with air inlet boxes 320.

[0031] In some embodiments: two metal water pipes are vertically arranged inside the cavity 150, one of which is convenient for connecting with multiple water pipes 340 to facilitate the transportation of condensed water to the inside of the water collection tank 250, and the other is convenient for using the chiller 400 to distribute cold water to multiple water inlet pipes 311, and a water collecting metal pipe can be arranged at the rear of the cabinet 100 to facilitate the connection of multiple drain pipes 314, so that the cooling water after heat exchange can be re-collected into the chiller 400 for recycling.

[0032] In addition, a through hole is opened in the side wall of the air inlet box 320, and a connecting pipe 321 is set on the outer wall of the other side of the air inlet box 320. The ends of multiple connecting pipes 321 are connected to curved air supply copper pipes 322, and the ends of the curved air supply copper pipes 322 are connected to cooling vortex tubes 323.

[0033] In some embodiments: the structure of the cooling vortex tube 323 is mainly composed of a nozzle, a vortex chamber, a cold end tube, a hot end tube and a hot end regulating valve. Its working principle is to convert the input compressed air into cold and hot air flows through internal energy conversion, and use the cold air flow to achieve a cooling effect. The model can be VAIR vortex tube VC60035, which belongs to the prior art and is convenient for using the cold air it generates to better achieve the effect of rapid cooling. The temperature of the cooling vortex tube 323 can be controlled by a regulating valve.

[0034] In addition, a water inlet pipe 311 is provided on the side wall of the liquid-cooled plate heat exchanger 1 310, and the end of the water inlet pipe 311 is connected to the water discharge end of the chiller 400. A drain pipe 314 is provided on the outer wall of the liquid-cooled plate heat exchanger 2 313, and the end of the drain pipe 314 is connected to the return end of the chiller 400.

[0035] In some embodiments: the chiller 400 model can be selected as SCA-01, which belongs to the prior art.

[0036] In some embodiments: a thermal imaging sensor can be set at the rear of the cabinet 100 to monitor the temperatures of multiple battery packs respectively. When an abnormally high temperature is detected in a battery pack, the cooling of a specific row of battery packs can be accelerated. For example, the cooling airflow of the cooling vortex tube 323 corresponding to that group of battery packs can be increased. The outer wall of the cabinet 100 can be provided with multiple wire penetration holes to facilitate cable arrangement during charging.

[0037] In some embodiments: the device can be powered by an external conventional power supply, and the device can also be controlled and used by an external console, all of which belong to the prior art.

[0038] In addition, the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and methods.

[0039] Working principle: First start the crossflow fan 161, and inject external compressed gas into multiple cooling vortex tubes 323 at the same time. The cooling vortex tubes 323 generate cold air to lay the foundation for heat dissipation, and the crossflow fan 161 generates heat dissipation airflow. The two cooperate, and the cold air generated by the cooling vortex tube 323 blows to multiple fins to reduce their temperature. The wind flow generated by the crossflow fan 161 passes through the curved air delivery copper tube 322. Due to its special curved structure, the wind flow is fully in contact with the low-temperature copper tube, and the temperature is significantly reduced. With the help of the air outlet 141 and the air inlet, internal circulation cooling is generated, so that multiple battery packs are cooled evenly and quickly, and the temperature is accurately controlled according to the preset parameters, so that the battery pack is in a suitable temperature environment when charging; Moreover, the water chiller 400 is connected to a plurality of liquid-cooled plate heat exchangers in the cabinet 100 via a water inlet pipe 311. The liquid-cooled plate heat exchangers are located directly below the battery pack to cool the battery pack. Fins 330 are located directly below the plurality of liquid-cooled plate heat exchangers. The fins 330 face upward and are in direct contact with the plurality of liquid-cooled plate heat exchangers, which can guide the condensed water so that the condensed water flows along a predetermined path, and can also guide the wind to optimize the airflow distribution in the air duct. The condensed water guided by the fins 330 is first collected in the water collection tank 250 on the left side of the cabinet 100 via a water guide pipe 340. The water collection tank 250 contains evaporating cotton 261 to absorb the condensed water. There is an axial flow fan 2 170 on the inner wall of the cabinet 100 on the left side of the evaporating cotton 261, which can evaporate the condensed water absorbed by the evaporating cotton 261. If the evaporation effect of the evaporating cotton is not good or there is too much condensed water, the excess water will be introduced into the water collecting tank 1 200. There is an ultrasonic atomizing device 210 in the water collecting tank 1 200 to convert water into tiny atomized particles. There is a cross-flow fan 3 230 on the left side of the water collecting tank 1 200, which is responsible for discharging the atomized condensed water to keep the system in a balanced humidity. The ultrasonic atomizing dehumidification device assists the evaporating cotton dehumidification system. The evaporating cotton evaporation component is combined with the ultrasonic atomizer, and the two complement each other to achieve timely and rapid evaporation of condensed water, avoiding problems caused by accumulation of condensed water in the system. Through the fin 330 structure and the internal circulation air duct, when the condensed water is diverted, the internal circulation cold air can be diverted, and the cooling capacity of the liquid cooling plate can be used to avoid energy waste and improve the heat dissipation efficiency. The cold source generated by multiple cooling vortex tubes can cool down the battery pack with severe heating. When the high-power battery pack heats abnormally, the cooling vortex tube cold source will cool it down. Through the composite heat dissipation method, the system can quickly cool down the battery pack and stabilize it in the ideal temperature range, providing guarantee for the safe charging and stable operation of the battery pack. The liquid cooling constant temperature cabinet and the chiller adopt a split connection design, which can meet the use requirements of different scenarios, whether it is small-scale laboratory testing or large-scale application of industrial production lines; Moreover, a cold air flow is generated by a plurality of cooling vortex tubes 323 to blow toward the fins 330, which can meet the constant temperature control requirements of the battery, and can also use wind force to drive the plurality of rotating rings 360 to rotate. When the rotating ring 360 rotates, a plurality of cleaning plates 362 arranged on its outer wall move accordingly, and the centrifugal force and friction force generated by the rotation are used to cooperate with the condensed water on the fins 330 to clean the surface of the fins 330 in all directions, thereby reducing the accumulation of impurities on the fins and preventing the formation of a dirt layer. The bottom of the plurality of condensed water collecting plates 300 adopts an inclined design, which allows the condensed water to flow more smoothly and quickly into the second collecting tank for evaporation under the action of gravity, thereby improving the condensed water treatment process and ensuring stable operation of the system.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing, comprising a cabinet body (100) and a water chiller (400), characterized in that: A controller (110) is arranged on the side wall of the cabinet (100); a sliding door (120) is connected to the front outer wall of the cabinet (100) by means of a pin shaft; a fixing plate (130) is arranged inside the cabinet (100); a mounting frame (140) is arranged on the side wall of the fixing plate (130); a cavity (150) is arranged on the left side of the fixing plate (130); a circulating air duct (160) is arranged on the right side of the mounting frame (140); a crossflow fan 1 (161) is arranged on the inner wall of the circulating air duct (160); a crossflow fan 2 (170) is arranged on the inner wall of the cavity (150); an evaporation component is arranged inside the cavity (150); the evaporation component includes a water collector A trough (200) and a water collecting trough (250), a water receiving pipe (240) being connected between the water collecting trough (200) and the water collecting trough (250), a plurality of liquid cooling components being arranged on the right inner wall of the mounting frame (140), the plurality of liquid cooling components comprising a condensing water collecting plate (300), a liquid cooling plate heat exchanger (310) and a liquid cooling plate heat exchanger (313) being arranged on the top of the plurality of condensing water collecting plates (300), a battery pack (370) being arranged on the top of the liquid cooling plate heat exchanger (310) and the liquid cooling plate heat exchanger (313), and a water pipe (312) being connected between the liquid cooling plate heat exchanger (310) and the liquid cooling plate heat exchanger (313).

2. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 1, characterized in that: An air inlet (142) is provided on the right inner wall of the mounting frame (140), and an air outlet (141) is provided at the bottom of the mounting frame (140).

3. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 2, characterized in that: An ultrasonic atomizer (210) and a water level sensor (220) are arranged inside the water collecting tank (200), and a cross-flow fan (230) is arranged on the outer wall of the water collecting tank (200).

4. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 3, characterized in that: A connecting frame (260) is arranged inside the second water collecting tank (250), and evaporating cotton (261) is arranged inside the connecting frame (260).

5. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 4, characterized in that: A trough body is provided on the top of the plurality of condensate water collecting plates (300), the inner wall of the trough body is provided with fins (330), and the inner wall of the trough body is also provided with a cleaning assembly, and the cleaning assembly comprises a fixing rod (350).

6. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 5, characterized in that: The fixing rod (350) is provided with a groove (351) on its circumferential outer wall, and a plurality of balls (352) are rotatably connected to the inner walls of the grooves (351). An inner sleeve (361) is rotatably sleeved inside the grooves (351), and a rotating ring (360) is provided on the circumferential outer wall of the inner sleeve (361). A cleaning plate (362) is provided on the circumferential outer wall of the rotating ring (360), and the plurality of cleaning plates (362) are respectively in slight contact with the outer walls of the fins (330).

7. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 6, characterized in that: The bottoms of the plurality of condensation water collecting plates (300) are inclined, the outer walls of the plurality of condensation water collecting plates (300) are provided with water guide pipes (340), and the outer walls of one side of the plurality of condensation water collecting plates (300) are also provided with air inlet boxes (320).

8. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 7, characterized in that: A through opening is provided on a side wall of the air inlet box (320), and a connecting tube (321) is provided on the outer wall of the other side of the air inlet box (320). The ends of the plurality of connecting tubes (321) are connected to curved air supply copper tubes (322), and the ends of the curved air supply copper tubes (322) are connected to cooling vortex tubes (323).

9. The evaporative liquid cooling constant temperature cabinet for lithium battery charge and discharge testing according to claim 8, characterized in that: A water inlet pipe (311) is provided on the side wall of the first liquid-cooled plate heat exchanger (310), and the end of the water inlet pipe (311) is connected to the water discharge end of the chiller (400). A drain pipe (314) is provided on the outer wall of the second liquid-cooled plate heat exchanger (313), and the end of the drain pipe (314) is connected to the return end of the chiller (400).

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