Low pressure test chamber

Abstract

This invention provides a low-pressure test chamber. The low-pressure test chamber includes a first chamber, a pressure control system, a temperature control system, and a time control system. The first chamber also has a first air exchange port, a second air exchange port, and a charging / discharging interface. The pressure control system is located outside the first chamber and connected to the first air exchange port via a pipe. The temperature control system is located inside the first chamber, and the time control system is located on the first chamber. By combining the pressure control system, temperature control system, and time control system, the testing environment of the battery under test can be precisely adjusted, thereby improving testing accuracy. Furthermore, since the battery under test is placed inside the first chamber and connected to external charging / discharging equipment via the charging / discharging interface, it can support testing of most battery models, greatly enhancing compatibility.

Description

Technical Field

[0001] This utility model relates to the field of battery testing technology, and in particular to a low-pressure test chamber. Background Technology

[0002] With the rapid development of new energy technologies, lithium batteries, fuel cells, and other new types of batteries are widely used. To ensure the safety and reliability of batteries in various extreme environments, rigorous environmental adaptability testing is required, including charge-discharge tests of individual battery cells under different low-pressure environments. Current technologies typically only provide low-pressure environments for these tests, resulting in lower accuracy in the control of parameters such as temperature, pressure, and time, leading to lower test results, and incompatibility with various battery models. Utility Model Content

[0003] The purpose of this invention is to provide a low-pressure test chamber to solve the problem of poor test accuracy and compatibility of existing technologies when conducting charge and discharge tests under different low-pressure environments.

[0004] The technical solution of this utility model is as follows: a low-pressure test chamber is provided, including a first chamber, a pressure control system, a temperature control system and a time control system.

[0005] The first housing is also provided with a first air vent, a second air vent, and a charging / discharging interface;

[0006] The air pressure control system is located outside the first housing and is connected to the first air exchange port via a pipe. The temperature control system is located inside the first housing, and the time control system is located on the first housing.

[0007] Preferably, the low-pressure test chamber further includes a main control panel, which is connected to the air pressure control system, the temperature control system, and the time control system respectively;

[0008] The air pressure control system is used to regulate the air pressure inside the first chamber, the temperature control system is used to regulate the temperature inside the first chamber, the time control system is used to set the running time of the air pressure control system, and the main control panel is used to control the start and stop of the air pressure control system, the temperature control system, and the time control system.

[0009] Preferably, the air pressure control system includes a second housing, an air pressure sensor, a vacuum pump, a gas pressurization module, and a first control module;

[0010] The pressure sensor, the vacuum pump, and the gas booster module are all located inside the second housing. The first control module is located on the first housing. A safety valve is also provided on the second housing.

[0011] The pressure sensor, the vacuum pump, and the gas booster module are respectively connected to the first control module; the first control module is connected to the main control panel.

[0012] Preferably, the temperature control system includes a third housing, a temperature sensor, a heating module, a cooling module, a circulating fan, and a second control module;

[0013] The heating module and the cooling module are located inside the third housing, the temperature sensor and the circulating fan are located on the third housing, and the second control module is integrated on the main control panel;

[0014] The temperature sensor, the heating module, the cooling module, and the circulating fan are respectively connected to the second control module, and the second control module is connected to the main control panel.

[0015] Preferably, the time control system includes a third control module;

[0016] The third control module is connected to the main control panel, and the third control module is integrated on the main control panel.

[0017] Preferably, the low-pressure test chamber also includes a data acquisition system;

[0018] The data acquisition system is connected to the main control panel, and the data acquisition system is located on the main control panel.

[0019] Preferably, the low-pressure test chamber further includes wiring terminals, which are located on the first chamber body.

[0020] Preferably, the low-pressure test chamber further includes an observation window, which is located on the first chamber body.

[0021] Preferably, the charging / discharging interface is an aviation plug.

[0022] Preferably, the first housing has a double-layer structure, with the inner layer made of stainless steel and the outer layer made of thermal insulation material.

[0023] The beneficial effects of this invention are as follows: When conducting charge-discharge tests on individual battery cells under different low-pressure environments, the battery under test is placed in the first chamber. The pressure control system precisely adjusts the pressure within the first chamber, and the temperature control system precisely adjusts the temperature within the first chamber, simulating test environments with different pressures and temperatures. Furthermore, by combining this with a time control system to set the operating time of the pressure control system, the test environment for the battery under test can be precisely adjusted, thereby improving test accuracy. Simultaneously, since the battery under test is placed in the first chamber and connected to external charging / discharging equipment via a charging / discharging interface, it can support testing of most battery models, greatly enhancing compatibility. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the low-pressure test chamber according to an embodiment of the present invention.

[0025] Reference numerals: 10-First enclosure; 11-First air exchange port; 12-Second air exchange port; 13-Charging / discharging interface; 14-Observation window; 20-Pressure control system; 21-Second enclosure; 22-Pressure sensor; 23-Vacuum pump; 24-Gas pressurization module; 25-First control module; 26-Safety valve; 30-Temperature control system; 31-Third enclosure; 32-Temperature sensor; 33-Heating module; 34-Refrigeration module; 35-Circulating fan; 40-Time control system; 50-Main control panel; 60-Data acquisition system; 70-Terminal block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] Figure 1 This is a schematic diagram of the low-pressure test chamber according to an embodiment of the present invention. It should be noted that if substantially the same results are obtained, the embodiment of the present invention is not necessarily identical. Figure 1 The structures shown are limited. For example... Figure 1 As shown, the low-pressure test chamber includes a first chamber 10, a pressure control system 20, a temperature control system 30, and a time control system 40.

[0029] The first housing 10 is also provided with a first air exchange port 11, a second air exchange port 12 and a charging / discharging interface 13;

[0030] The air pressure control system 20 is located outside the first housing 10 and is connected to the first air exchange port 11 via a pipe. The temperature control system 30 is located inside the first housing 10, and the time control system 40 is located on the first housing 10.

[0031] In this embodiment, the first chamber 10 provides a testing space. The air pressure control system 20 is located outside the first chamber 10 and is connected to the first air exchange port 11 of the first chamber 10 through a pipe to adjust the air pressure parameters inside the first chamber 10. The adjustment range is 40 to 101 kPa, and the accuracy is ±2 kPa. The temperature control system 30 is directly set inside the first chamber 10 to adjust the temperature parameters inside the first chamber 10. The adjustment range is 0 to 100 kPa, and the accuracy is ±2 kPa. The time control system 40 is set on the first chamber 10 and is used to set the specific time for battery testing. This time is set according to the test requirements and the accuracy is ±0.1 kPa. When conducting charge-discharge tests on individual battery cells under different low-pressure environments, the battery under test is placed in the first chamber 10. The air pressure control system 20 precisely adjusts the air pressure inside the first chamber 10, and the temperature control system 30 precisely adjusts the temperature inside the first chamber 10. This simulates test environments with different air pressures and temperatures. Furthermore, by combining this with the time control system 40 to set the running time of the air pressure control system 20, the test environment for the battery under test can be precisely adjusted, thereby improving test accuracy. Simultaneously, since the battery under test is placed in the first chamber 10 and connected to external charging and discharging equipment via the charging and discharging interface 13, it can support testing of most battery models, greatly enhancing compatibility.

[0032] The second ventilation port 12 is a manual ventilation port, equipped with a normally closed manual valve. In case of an emergency, such as a malfunction of the air pressure control device, the air pressure in the first chamber 10 can be quickly restored to normal atmospheric pressure by opening the manual valve through the second ventilation port 12.

[0033] In some embodiments, the low-pressure test chamber further includes a main control panel 50, which is connected to the air pressure control system 20, the temperature control system 30 and the time control system 40 respectively.

[0034] The air pressure control system 20 is used to regulate the air pressure inside the first chamber 10, the temperature control system 30 is used to regulate the temperature inside the first chamber 10, the time control system 40 is used to set the running time of the air pressure control system 20, and the main control panel 50 is used to control the start and stop of the air pressure control system 20, the temperature control system 30, and the time control system 40.

[0035] In this embodiment, the air pressure control system 20 is used to regulate the air pressure inside the first housing 10, the temperature control system 30 is used to regulate the temperature inside the first housing 10, the time control system 40 is used to set the running time of the air pressure control system 20, and the main control panel 50 is used to control the start and stop of the air pressure control system 20, the temperature control system 30, and the time control system 40. The start and stop of the air pressure control system 20, the temperature control system 30, and the time control system 40 can be controlled through a single main control panel 50. For ease of operation, the main control panel 50 can be mounted on the first housing 10.

[0036] In some embodiments, the air pressure control system 20 includes a second housing 21, an air pressure sensor 22, a vacuum pump 23, a gas pressurization module 24, and a first control module 25;

[0037] The pressure sensor 22, the vacuum pump 23 and the gas booster module 24 are all located inside the second housing 21. The first control module 25 is located on the first housing 10. The second housing 21 is also equipped with a safety valve 26.

[0038] The pressure sensor 22, the vacuum pump 23, and the gas booster module 24 are respectively connected to the first control module 25; the first control module 25 is connected to the main control panel 50.

[0039] In this embodiment, the air pressure control system 20 includes a second housing 21, an air pressure sensor 22, a vacuum pump 23, a gas boosting module 24, and a first control module 25. The second housing 21 has an air port connected to the first housing 10, forming an air pressure communication structure between the second housing 21 and the first housing 10. The air pressure sensor 22 monitors the air pressure inside the first housing 10, i.e., the battery testing environment, in real time. The vacuum pump 23 and the gas boosting module 24 are used to adjust the air pressure inside the first housing 10 to keep it in a relatively stable state. The vacuum pump 23 and the gas boosting module 24 are used for depressurization and pressurization, respectively. When the vacuum pump 23 is working, the air pressure is controlled within the range of 40 kPa to 101 kPa by passing gas through the first housing 10. When the gas boosting module 24 is working, the air pressure is controlled within the range of 10 kPa to 800 kPa. The gas pressurization module 24 regulates the gas pressure by filling the chamber with one or more inert gases such as nitrogen, argon, and helium.

[0040] In some embodiments, the temperature control system 30 includes a third housing 31, a temperature sensor 32, a heating module 33, a cooling module 34, a circulating fan 35, and a second control module.

[0041] The heating module 33 and the cooling module 34 are located inside the third housing 31, the temperature sensor 32 and the circulating fan 35 are located on the third housing 31, and the second control module is integrated on the main control panel 50.

[0042] The temperature sensor 32, the heating module 33, the cooling module 34, and the circulating fan 35 are respectively connected to the second control module, and the second control module is connected to the main control panel 50.

[0043] In this embodiment, the temperature control system 30 includes a third housing 31, a temperature sensor 32, a heating module 33, a cooling module 34, a circulating fan 35, and a second control module. The heating module 33 and the cooling module 34 are used to heat or cool the air inside the third housing 31. The circulating fan 35 is used to exchange the air inside the third housing 31 with the air inside the first housing 10, thereby regulating the air temperature inside the first housing 10. The temperature sensor 32 is used to monitor the air temperature parameters inside the first housing 10 in real time and send them to the second control module, which then sends the air temperature parameters to the main control panel 50.

[0044] In some embodiments, the time control system 40 includes a third control module;

[0045] The third control module is connected to the main control panel 50, and the third control module is integrated on the main control panel 50.

[0046] In this embodiment, the time control system 40 is controlled by a third control module to set the test time. To facilitate operation by staff, the third control module is integrated on the main control panel 50.

[0047] In one specific embodiment, the first control module 25, the second control module, the third control module and the main control panel 50 can be all or partly integrated together on the first housing 10 for easy operation by staff.

[0048] In some embodiments, the low-pressure test chamber further includes a data acquisition system 60;

[0049] The data acquisition system 60 is connected to the main control panel 50, and the data acquisition system 60 is mounted on the main control panel 50.

[0050] In this embodiment, the data acquisition system 60 is used to collect and record battery test data in real time. It can be set up separately or integrated with the main control panel 50.

[0051] In some embodiments, the low-pressure test chamber further includes a terminal block 70, which is disposed on the first chamber 10.

[0052] In this embodiment, the first housing 10 is also provided with a wiring terminal 70, which can transmit battery test data to an external data analysis device.

[0053] In some embodiments, the low-pressure test chamber further includes an observation window 14, which is disposed on the first chamber body 10.

[0054] In this embodiment, the observation window 14 allows staff to obtain the basic condition of the battery in real time, and to react promptly in case of abnormalities such as battery bulging or deformation, thereby improving the safety of battery testing.

[0055] In some embodiments, the charging / discharging interface 13 is an aviation plug.

[0056] In this embodiment, the battery to be tested needs to be replaced frequently during battery charging and discharging tests, which increases the number of times the charging and discharging interface 13 is plugged in and out. However, the aviation plug can withstand long-term use and frequent plugging and unplugging operations, which can improve the service life of the low-pressure test chamber.

[0057] In some embodiments, the first housing 10 has a double-layer structure, with the inner layer made of stainless steel and the outer layer made of thermal insulation material.

[0058] In this embodiment, the stainless steel inner layer of the first housing 10 provides excellent structural strength, capable of withstanding significant pressure and ensuring stable structural strength even with changes in internal air pressure. The outer layer of insulation material effectively isolates external heat, preventing the internal temperature of the first housing 10 from being affected by external heat. This ensures the stability of the testing environment for the battery under test and improves testing accuracy.

[0059] In one specific embodiment, the battery to be tested can first be placed in the first housing 10 and charged or discharged through the charging / discharging interface 13. Then, the air pressure control system 20, temperature control system 30, and time control system 40 are activated through the main control panel 50. The air pressure inside the first housing 10 is set through the first control module 25 of the air pressure control system 20, the temperature inside the first housing 10 is set through the temperature control system 30, and the running time of the air pressure control system 20 is set through the time control system 40. That is, the air pressure control system 20 maintains the air pressure inside the first housing 10 at the set air pressure for a set period of time before the battery test begins. During the battery test, the data acquisition system 60 collects and records the battery test data in real time and transmits the battery test data to an external data analysis device through the terminal block 70.

[0060] The beneficial effects of this invention are as follows: When conducting charge-discharge tests on individual battery cells under different low-pressure environments, the battery under test is placed in the first housing 10. The air pressure control system 20 precisely adjusts the air pressure inside the first housing 10, and the temperature control system 30 precisely adjusts the temperature inside the first housing 10. This simulates test environments with different air pressures and temperatures. Furthermore, by combining this with the time control system 40 to set the battery charge-discharge test time, the test environment for the battery under test can be precisely adjusted, thereby improving test accuracy. Simultaneously, since the battery under test is placed in the first housing 10 and connected to an external charge-discharge device via the charge-discharge interface 13, it can support testing of most battery models, greatly enhancing compatibility.

[0061] The above description is merely an embodiment of the present utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present utility model, but these improvements all fall within the protection scope of the present utility model.

Claims

1. A low pressure test chamber, characterized by, It includes the first enclosure, the air pressure control system, the temperature control system, the main control panel, and the time control system; The first housing is also provided with a first air vent, a second air vent, and a charging / discharging interface; The air pressure control system is located outside the first housing and is connected to the first air exchange port through a pipe; the temperature control system is located inside the first housing; and the time control system is located on the first housing. The main control panel is connected to the air pressure control system, the temperature control system, and the time control system respectively; The air pressure control system is used to regulate the air pressure inside the first chamber, the temperature control system is used to regulate the temperature inside the first chamber, the time control system is used to set the running time of the air pressure control system, and the main control panel is used to control the start and stop of the air pressure control system, the temperature control system, and the time control system.

2. The hypobaric test chamber of claim 1, wherein, The air pressure control system includes a second housing, an air pressure sensor, a vacuum pump, a gas booster module, and a first control module; The pressure sensor, the vacuum pump, and the gas booster module are all located inside the second housing. The first control module is located on the second housing. A safety valve is also provided on the second housing. The pressure sensor, the vacuum pump, and the gas booster module are respectively connected to the first control module; the first control module is connected to the main control panel.

3. The low-pressure test chamber according to claim 1, characterized in that, The temperature control system includes a third enclosure, a temperature sensor, a heating module, a cooling module, a circulating fan, and a second control module. The heating module and the cooling module are located inside the third housing, the temperature sensor and the circulating fan are located on the third housing, and the second control module is integrated on the main control panel; The temperature sensor, the heating module, the cooling module, and the circulating fan are respectively connected to the second control module, and the second control module is connected to the main control panel.

4. The low-pressure test chamber according to claim 1, characterized in that, The time control system includes a third control module; The third control module is connected to the main control panel, and the third control module is integrated on the main control panel.

5. The low-pressure test chamber according to claim 1, characterized in that, It also includes a data acquisition system; The data acquisition system is connected to the main control panel, and the data acquisition system is located on the main control panel.

6. The low-pressure test chamber according to claim 1, characterized in that, It also includes wiring terminals, which are located on the first housing.

7. The low-pressure test chamber according to claim 1, characterized in that, It also includes an observation window, which is located on the first housing.

8. The low-pressure test chamber according to claim 1, characterized in that, The charging and discharging interface is an aviation plug.

9. The low-pressure test chamber according to claim 1, characterized in that, The first enclosure has a double-layer structure, with the inner layer made of stainless steel and the outer layer made of thermal insulation material.

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