Battery testing environment bin

Abstract

The utility model discloses a battery test environment chamber, which comprises a chamber body, a working chamber, a temperature adjusting system and a fire alarm system, a plurality of working bins are arranged in the bin body and arranged side by side in the height direction. The side face, the bottom and the top of the interior of the working bin comprise a plurality of sprayers, the temperature adjusting system is connected into the bin body and connected with the sprayers of the working bin to form a cooling liquid circulation route, and the fire alarm system is connected to the bin body and connected with the interior of the working bin to form a fire water channel. The device has the beneficial effects that the temperature fluctuation is reduced, so that the consistency of test environment temperatures of samples at different positions is ensured. And the fire alarm system improves the use safety of the environment bin.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, and particularly to a battery testing environment chamber. Background Art

[0002] At present, the testing of batteries is carried out in a testing environment chamber. For the chamber structure that needs to maintain a constant temperature condition, a temperature sensor is mostly used to monitor the temperature at a certain point in the chamber, and then the operation of the heating system and the cooling system is adjusted according to the set program to reach the required target temperature. Such as CN114432623A - An automatic fire extinguishing box and an automotive power battery test environment chamber. However, due to the influence of factors such as the volume of the environment chamber, the air duct design, the air path, the wind direction, and the wind speed, there are differences in the uniformity at different positions and the fluctuation at the same position in the environment chamber, which will interfere with the consistency evaluation result of parallel samples due to environmental factors, and thus may affect the accuracy of the product performance evaluation.

[0003] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of implication that this information has constituted the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to solve the problem that the temperature in the current environment chamber that requires a constant temperature condition is uneven and fluctuates, resulting in inaccurate test results.

[0005] The utility model solves the above technical problem by the following technical means:

[0006] A battery testing environment chamber, comprising a chamber body, a working chamber, a temperature control system, and a fire alarm system; a plurality of working chambers are included in the chamber body, and the working chambers are distributed along the height and / or width direction of the chamber body; a plurality of nozzles are connected in the working chamber, the bottom of the working chamber includes a coolant recovery hole, the coolant recovery hole is connected to the temperature control system, the temperature control system is connected to the inside of the chamber body and is connected to the nozzles and the coolant recovery hole of the working chamber to form a coolant circulation route, and the fire alarm system is connected to the chamber body and is connected to the nozzles and the coolant recovery hole of the working chamber to form a fire water channel.

[0007] The utility model installs the sample to be measured in the working chamber, connects it to the nozzle in the working chamber through the temperature control system, forms a coolant spray at the nozzle to control the temperature of the sample to be measured, and the coolant is collected at the bottom of the working chamber and recycled through the coolant recovery hole; the fire alarm system is connected to the nozzle in the working chamber for fire protection and is discharged into a suitable tank or the outside through the coolant recovery hole. The utility model heats or cools the coolant through the temperature control component and sprays fine water mist through the nozzle to improve the temperature uniformity in the chamber, reduce the temperature fluctuation, and thus ensure the consistency of the test environment temperature of the samples at different positions; the fire alarm system improves the safety of using this environmental chamber.

[0008] Preferably, the chamber body is a cuboid, and a plurality of layers of placement plates are connected inside the chamber body. The working chamber is detachably connected to the placement plates. The chamber body is provided with a door, and the working chamber is located near the door inside the chamber body. The temperature control system is integrated at a position away from the door inside the chamber body, and the fire alarm system is installed inside or on the side of the chamber body.

[0009] Preferably, the working chamber includes a sealed box, elastic struts, a rotating disk, a support plate, and a battery support frame; a plurality of independent test spaces are included inside the sealed box; the bottom of the sealed box is welded to the rotating disk, and the center of the bottom of the rotating disk is connected to the support plate; a plurality of elastic struts are connected to the bottom surface inside the sealed box, and the bottom of the battery support frame is connected to the top ends of the elastic struts.

[0010] Partition plates can be added to the sealed box to form a plurality of independent test spaces and reduce interference between samples;

[0011] The setting of the rotating disk enables the sealed box to rotate by 0 to 360°, which is convenient for installing batteries at different positions.

[0012] Considering that water droplets on the surface of the battery tab may cause a short - circuit safety risk, the structure of the sealed box is increased, and the rotatable function of the sealed box can improve the installation efficiency of the inner - side samples.

[0013] Preferably, the test spaces are arranged in a circular array or a rectangular array.

[0014] Preferably, the top of the sealed box includes a plurality of tab perforations, and at least one tab perforation is provided in each test space.

[0015] The top cover of the sealed box only exposes the battery tabs, and the upper cover is provided with a sealing strip to ensure close contact with the battery cover plate, ensuring the internal circulation of the fine water mist.

[0016] Preferably, the center of the top of the sealed box includes a coolant inlet, which is connected to the temperature control system to form a coolant circulation route, connected to the fire alarm system to form a fire water channel, and connected to a plurality of nozzles.

[0017] Preferably, the temperature control system includes a cooling circulation pressurizing component and a temperature control component. Both the coolant circulation pressurizing component and the temperature control component are installed in the chamber. The outlet end of the coolant circulation pressurizing component is connected to the temperature control component, the temperature control component is connected to the nozzles of the working chamber, and the coolant recovery hole of the working chamber is connected to the coolant circulation pressurizing component to form a coolant circulation route.

[0018] Preferably, the coolant circulation pressurizing component includes a coolant tank, a first solenoid valve, and a second solenoid valve. The outlet end of the coolant tank is connected to a coolant outlet pipe, the first solenoid valve is connected to the coolant outlet pipe, the coolant outlet pipe is connected to the temperature control component, the inlet end of the coolant tank is connected to a coolant inlet pipe, the second solenoid valve is connected to the coolant inlet pipe, and the coolant inlet pipe is connected to the coolant recovery hole.

[0019] Preferably, the fire alarm system includes a fire pipe and a fire water discharge pipe. The fire pipe is connected to the working chamber, and the fire water discharge pipe is connected to the working chamber.

[0020] Preferably, the nozzles are high-pressure fine water mist nozzles. The angles and flow rates of the high-pressure fine water mist nozzles are adjustable to meet different test requirements.

[0021] The advantages of the present utility model are as follows:

[0022] (1) In the present utility model, the sample to be tested is installed in the working chamber and is connected to the nozzles in the working chamber through the temperature control system to form a coolant spray at the nozzles to control the temperature of the sample to be tested. The coolant is collected at the bottom of the working chamber and recovered through the coolant recovery hole for recycling; the fire alarm system is connected to the nozzles in the working chamber for fire protection and is discharged to a suitable tank or the outside through the coolant recovery hole. The present utility model heats or cools the coolant through the temperature control component and sprays fine water mist through the nozzles to improve the temperature uniformity in the chamber and reduce temperature fluctuations, thereby ensuring the consistency of the test environment temperature of samples at different positions; the fire alarm system improves the safety of using this environmental chamber;

[0023] (2) The height of the elastic struts is adjustable to meet the test requirements of samples at different heights;

[0024] (3) A partition board can be added to the sealed box to form multiple independent test spaces to reduce interference between samples;

[0025] (4) The rotary disk is arranged so that the sealed box can rotate 0 to 360°, facilitating the installation of batteries at different positions.

[0026] (5) Considering the possible short - circuit safety risk caused by water droplets on the surface of battery tabs, the structure of the sealed box is added, and the rotatable function of the sealed box can improve the installation efficiency of the inner samples. Only the battery tabs are exposed on the top cover of the sealed box, and the upper cover is equipped with a sealing strip to ensure close contact with the battery cover plate, guaranteeing the internal circulating flow of the fine water mist. Brief Description of the Drawings

[0027] Figure 1 It is a schematic structural view of the battery test environment chamber according to an embodiment of the present utility model;

[0028] Figure 2 It is a schematic structural view of the battery test environment chamber according to an embodiment of the present utility model;

[0029] Figure 3 It is a side view of the working chamber according to an embodiment of the present utility model;

[0030] Figure 4 It is a top view of the working chamber according to an embodiment of the present utility model;

[0031] Figure 5 It is a side view of the working chamber (another form) according to an embodiment of the present utility model;

[0032] Figure 6 It is a cross - sectional view of the high - pressure fine water mist nozzle according to an embodiment of the present utility model;

[0033] Figure 7 It is a schematic structural view of the high - pressure fine water mist nozzle according to an embodiment of the present utility model;

[0034] Reference Numerals in the Drawings:

[0035] 1. Chamber body;

[0036] 2. Working chamber; 21. Sealed box; 22. Elastic support pillar; 23. Rotary disk; 24. Support plate; 25. Battery support frame; 26. Tab perforation; 27. Coolant inlet; 28. Coolant recovery hole; 29. Temperature probe;

[0037] 3. Temperature control system; 31. Coolant circulation and pressurization assembly; 32. First solenoid valve; 33. Second solenoid valve; 34. Temperature control assembly; 341. Compressor; 342. Evaporator;

[0038] 4. Fire alarm system; 41. Three - color alarm lamp; 42. Smoke detector; 43. Pressure relief valve; 44. Fire pipeline; 45. Fire water discharge pipeline;

[0039] 5. High - pressure fine water mist nozzle; Detailed Embodiment

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0041] Embodiment 1:

[0042] The battery test environment chamber includes a chamber body 1, a working chamber 2, a temperature control system 3, and a fire alarm system 4; the chamber body 1 includes a plurality of working chambers 2, and the working chambers 2 can be arranged side by side in the height direction. The sides, bottom, and top of the working chamber 2 include a plurality of nozzles. In this embodiment, the nozzles are high-pressure fine water mist nozzles 5. The temperature control system 3 is connected to the high-pressure fine water mist nozzles 5 of the working chamber 2 to form a coolant circulation, and the fire alarm system 4 is connected to the chamber body 1 and forms a fire water channel in connection with the inside of the working chamber.

[0043] Specifically, as Figure 1 、 Figure 2 shown, the chamber body 1 is a cuboid, with multiple layers of storage plates arranged inside. The working chamber 2 is connected to the storage plates. A door can be provided on the chamber body 1, and the working chamber 2 is arranged near the door (front). The temperature control system 3 can be integrated on the back, and the fire alarm system 4 can be arranged on the side.

[0044] In this embodiment, the working chamber 2 includes a sealed box 21, elastic columns 22, a rotating disk 23, a support plate 24, and a battery support frame 25; the sealed box 21 includes a plurality of independent test spaces. Specifically, partition plates can be added to the sealed box to form a plurality of independent test spaces to reduce interference between samples; the internal structure of each test space is generally the same. The bottom of the sealed box 21 is welded to the rotating disk 23, and the center of the bottom surface of the rotating disk 23 is connected to the support plate 24. The support plate 24 can be detachably connected to the storage plate. The bottom of the battery support frame 25 is connected to the top end of the elastic column 22, and the bottom end of the elastic column 22 is connected to the rotating disk 23. The elastic column 22 is used to adjust the height of the battery to be tested; a pole ear perforation 26 is opened at the top of the sealed box 21 for the battery pole ear to pass through the pole ear perforation 26 to connect the test line. In this embodiment, the inside of the sealed box 21 is the test space, and the battery to be tested is placed inside the sealed box 21 and on the battery support frame 25. As Figure 4 shown, the test spaces can be arranged in a circular array, as Figure 5What is shown can also be a rectangular array. A pressure relief valve 43 is also provided on the side of the sealed box 21. In this embodiment, the elastic struts 22 can be springs, shrapnel, or compressed rubber, etc. On the one hand, they can adapt to batteries of various weights, and can also ensure that the battery tabs can pass through the tab perforations 26. The rotating disk 23 is rotatably connected to the support plate 24 through a bearing, facilitating the staff to place the battery to be tested in the test space.

[0045] The setting of the rotating disk 23 enables the sealed box to rotate 0 to 360°, facilitating the installation of batteries at different positions.

[0046] In this embodiment, a coolant inlet 27 is provided at the center of the top of the sealed box 21. The coolant inlet 27 is connected to a plurality of high-pressure fine water mist nozzles 5. Specifically, it can be connected through pipelines, and the pipelines can run along the inner wall of the sealed box 21. The working chamber 2 includes a plurality of high-pressure fine water mist nozzles 5, which are distributed on the sides, bottom, and top of the working chamber 2 to ensure uniform distribution of fine water mist in the sealed box 21. A coolant recovery hole 28 is opened at the center and / or edge of the bottom of the sealed box 21 for the liquefied fine water mist to flow out of the sealed box 21 and return to the temperature control system 3. The number of coolant recovery holes 28 can be multiple, or the top surface of the rotating disk 23 can be set as an inclined surface, and then the coolant recovery holes 28 are set at the lower positions for easy collection of the coolant. In order to facilitate obtaining the internal temperature of the sealed box 21, temperature probes 29 can also be provided. Multiple temperature probes 29 can be distributed at multiple positions in the sealed box 21 to make the test results more reference-worthy.

[0047] As Figure 2 shown, the temperature control system 3 includes a coolant circulation and pressurization component and a temperature control component 34. Among them, the coolant circulation and pressurization component includes a coolant tank 31. An external booster pump is provided for the coolant tank 31, and coolant is stored inside the coolant tank 31. The coolant in the coolant tank 31 can be pressurized by the booster pump and transported to the working chamber 2, and the recovery of the coolant can also be realized. The recovery of the coolant can use methods such as gravity recovery and negative pressure recovery. This embodiment is not limited to the recovery method. The coolant tank 31 can be used as a coolant storage on the one hand and as a tank for collecting coolant on the other hand. If it serves both storage and recovery functions, some impurity removal and filtration devices can be set on the recovery pipeline to avoid blocking the pipeline and causing non-recyclability. A first solenoid valve 32 is connected to the outlet end of the coolant tank 31. The first solenoid valve 32 is used to control the coolant to be transported to the coolant inlet 27 of the working chamber 2, and the coolant sprays out water mist from the high-pressure fine water mist nozzles 5 to cool the test sample. A second solenoid valve 33 is connected to the inlet end of the coolant tank 31. The second solenoid valve 33 is used to control the coolant to circulate back into the coolant tank 31 to realize the recycling of the coolant.

[0048] As Figure 1As shown, the fire alarm system 4 includes a three-color alarm light 41, a smoke detector 42, a pressure relief valve 43, a gas collection tank, a fire pipeline 44, and a fire water discharge pipeline 45;

[0049] The three-color alarm light 41 is connected above the bin body 1 to give an alarm in case of abnormal situations such as overheating and smoke. The smoke detector 42 is located inside the working bin 2 and is used to detect the smoke concentration in the working bin 2 and give an audible and visual alarm reminder through the three-color alarm light 41. The pressure relief valve 43 is connected to the side of the sealed box 21 and is used to discharge the gas in the sealed box 21 to the gas collection tank (not shown in the figure) in case of abnormal situations, reducing secondary pollution and facilitating later gas analysis. The gas collection tank is of a detachable structure to meet the requirement of regular disassembly and replacement.

[0050] The fire pipeline 44 is also connected to the coolant inlet 27, and it can be switched by a valve to connect the coolant inlet 27 to the fire pipeline 44 or the coolant pipeline. The coolant recovery hole 28 is also connected to the fire water discharge pipeline 45, and it can be switched by a valve to connect the coolant recovery hole 28 to the coolant recovery pipeline or the fire water discharge pipeline 45.

[0051] In this embodiment, the high-pressure fine water mist nozzle 5 can be selected from the current existing technologies. Under high pressure, the high-pressure fine water mist nozzle 5 atomizes the liquid into a water mist body at the micron level by means of centrifugation. The smaller part of the water mist body particles can enter the nozzle through the separator, and the water mist is ejected from the nozzle. Nine nozzles are installed on the fine water mist nozzle, and the water mist ejection direction is more comprehensive. The angle and flow rate of the high-pressure fine water mist nozzle are adjustable to meet different test requirements. The fine water mist can be a solution with a specific ratio of water, ethylene glycol mixture, electronic fluorinated liquid, refrigerant, insulating oil, etc., and can meet the use range from -60°C to 150°C.

[0052] The working process of this embodiment:

[0053] Open the door of the bin body 1, place the samples to be tested in multiple sealed boxes 21 respectively, and close the door body;

[0054] When it is necessary to cool the samples to be tested with coolant, the coolant inlet 27 is connected to the coolant pipeline, and the coolant enters the sealed box 21 through the coolant tank 31 to cool the samples to be tested. The cooled water is recovered to the coolant tank 31 through the coolant recovery hole 28.

[0055] When an abnormality occurs, such as abnormal temperature rise or combustion of the battery under test, at this time, the smoke detector 42 senses the smoke and transmits the signal to the three-color alarm light 41. At the same time, the solenoid valves on the fire pipeline 44 and the fire water discharge pipeline 45 are opened, and the first solenoid valve 32 and the second solenoid valve 33 are closed. Fire safety treatment is required. By switching the valve, the coolant inlet 27 is connected to the fire pipeline 44, and the fire water still cools or extinguishes the abnormal battery through the high-pressure fine water mist nozzle 5. Since the fire water contains a large amount of chemical solution, it can be connected to the fire water discharge pipeline 45 through the coolant recovery hole 28, and the fire water is discharged into a special container for subsequent treatment; at the same time, the pressure relief valve 43 discharges the flue gas to the gas collection tank.

[0056] In this embodiment, through the coolant circulation system, during the battery test process, the coolant is heated or cooled by the temperature control component and input into the sealed box 21. In the form of fine water mist sprayed by the high-pressure fine water mist nozzle 5, the temperature uniformity in the chamber is improved, and the temperature fluctuation is reduced, so as to ensure the consistency of the test environment temperature of samples at different positions. The corresponding temperature of the fine water mist can be adjusted by setting the target temperature, so as to achieve the purpose of controlling the temperature in the chamber. On the other hand, considering that the water droplets on the surface of the battery tab may cause a short-circuit safety risk, the structure of the sealed box 21 is increased, and the rotatable function of the sealed box 21 can improve the installation efficiency of the inner samples. The final fire alarm system can not only give timely risk warnings, but also automatically perform relevant exhaust and water spraying operations, further improving the safety of using this environmental chamber.

[0057] Embodiment 2:

[0058] As Figure 2 shown, on the basis of Embodiment 1, a temperature control component 34 is connected to the outlet end of the first solenoid valve 32, where the temperature control component 34 can be a heat exchanger, an air conditioner, a heating element, a refrigeration element, etc. This embodiment gives a way of the temperature control component 34. For example, including an air conditioner including a compressor 341, an evaporator 342 and a series of other components. The functions of the air conditioner to achieve refrigeration and heating can refer to the current existing technologies. In this embodiment, the temperature control component 34 can meet the requirements of refrigeration and heating. The refrigeration and heating requirements can also be separated. For example, an air conditioner is used for refrigeration and a heating wire is used for heating. This embodiment is not limited to the specific structure of the temperature control component 34, as long as it can achieve temperature control.

[0059] It should be noted that when the compressor 341 is used as a part of the temperature control component 34, a cooling setting needs to be arranged to cool the compressor 341. For example, by arranging a heat dissipation water pipe or a heat dissipation fan on the side of the compressor 341, the compressor 341 can be cooled.

[0060] For the convenience of temperature control, in Figure 1In it, a power switch, a control instrument, etc. are also provided on the bin body 1. The power switch and the control instrument are arranged on the left front side of the environmental bin and are used to control the power on and off of the environmental bin, the start and stop of the system, and the temperature setting. The control method and hardware in the prior art can be adopted.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present invention in each embodiment.

Claims

1. Battery test environment chamber, characterized in that: It includes a warehouse body, a working warehouse, a temperature control system and a fire alarm system; the warehouse body includes multiple working warehouses, and the working warehouses are distributed along the height and / or width direction of the warehouse body; multiple nozzles are connected to the working warehouse, and the bottom of the working warehouse includes a coolant recovery hole, and the coolant recovery hole is connected to the temperature control system. The temperature control system is connected to the warehouse body and connected to the nozzles and coolant recovery holes of the working warehouse to form a coolant circulation route. The fire alarm system is connected to the warehouse body and connected to the nozzles and coolant recovery holes of the working warehouse to form a fire water channel.

2. The battery test environment chamber according to claim 1, characterized in that: The warehouse body is a rectangular parallelepiped, and a multi-layer storage board is connected inside the warehouse body. The working warehouse is detachably connected to the storage board. The warehouse body is provided with a door, and the working warehouse is located in a position close to the door in the warehouse body. The temperature control system is integrated in a position far away from the door in the warehouse body, and the fire alarm system is installed inside or on the side of the warehouse body.

3. The battery test environment chamber according to claim 1, characterized in that: The working chamber includes a sealed box, an elastic support, a rotating disk, a support plate, and a battery support frame; the sealed box includes a plurality of independent test spaces; the bottom of the sealed box is welded to the rotating disk, and the support plate is connected to the bottom center of the rotating disk; the bottom surface of the sealed box is connected to a plurality of elastic supports, and the bottom of the battery support frame is connected to the top of the elastic support.

4. The battery test environment chamber according to claim 3, characterized in that: The test spaces are arranged in a circular array or a rectangular array.

5. The battery test environment chamber according to claim 3, characterized in that: The top of the sealed box includes a plurality of tab through-holes, and each test space is provided with at least one tab through-hole.

6. The battery test environment chamber according to claim 3, characterized in that: The top center of the sealed box includes a coolant inlet, which is connected to the temperature control system to form a coolant circulation route, the coolant inlet is connected to the fire alarm system to form a fire water channel, and the coolant inlet is connected to multiple nozzles.

7. The battery test environment chamber according to claim 1, characterized in that: The temperature control system includes a cooling circulation pressurizing component and a temperature control component. The coolant circulation pressurizing component and the temperature control component are both installed in the warehouse body. The outlet end of the coolant circulation pressurizing component is connected to the temperature control component, and the temperature control component is connected to the nozzle of the working warehouse. The coolant recovery hole of the working warehouse is connected to the coolant circulation pressurizing component to form a coolant circulation route.

8. The battery test environment chamber according to claim 7, characterized in that: The coolant circulation pressurizing component includes a coolant tank, a first solenoid valve, and a second solenoid valve. The outlet end of the coolant tank is connected to a coolant outlet pipe, the coolant outlet pipe is connected to the first solenoid valve, the coolant outlet pipe is connected to the temperature control component, the inlet end of the coolant tank is connected to a coolant inlet pipe, the coolant inlet pipe is connected to the second solenoid valve, and the coolant inlet pipe is connected to a coolant recovery hole.

9. The battery test environment chamber according to claim 1, characterized in that: The fire alarm system comprises a fire pipe and a fire water discharge pipe, wherein the fire pipe is connected to the working chamber, and the fire water discharge pipe is connected to the working chamber.

10. The battery test environment chamber according to claim 1, characterized in that: The nozzle is a high-pressure fine water mist nozzle.

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