Battery testing device

Abstract

The utility model provides a battery testing device, and relates to the technical field of battery testing, the battery testing device comprises a constant temperature box with a first chamber and a second chamber, the first chamber is used for placing a battery, and a temperature adjusting assembly is arranged in the second chamber; the temperature adjusting assembly comprises a shell with a ventilation cavity, a cooling assembly and a heating assembly, the cooling assembly and the heating assembly are arranged in the ventilation cavity in the vertical direction, the two ends of the ventilation cavity are provided with an air inlet and an air outlet communicating with the first cavity correspondingly, and air in the constant-temperature box enters the ventilation cavity through the air inlet. And after being cooled by the cooling assembly or heated by the heating assembly to a test temperature, the air flows into the first chamber through the air outlet. According to the air internal circulation design, air in the constant-temperature box is repeatedly adjusted, the constant-temperature effect is achieved, and the accuracy of a test result is improved. In addition, the cooling assembly and the heating assembly are arranged in the vertical direction, so that the space utilization rate is further optimized, the size occupied by the temperature adjusting assembly is smaller, and a more compact structural design is provided for the whole device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery testing, in particular to a battery testing device. BACKGROUND

[0002] With the rapid development of the new energy vehicle industry, the vehicle-mounted battery, as the core power component of each vehicle, plays an indispensable role. In order to ensure that the performance and service life of the vehicle-mounted battery meet the requirements, comprehensive and strict testing is a key link. Among them, battery performance testing and service life testing are particularly important and are an important basis for determining whether the battery is qualified.

[0003] In the battery performance testing process, the battery is usually placed in a temperature-controllable thermostat. The temperature in the thermostat is maintained within a certain test temperature range, and through multiple cycles and performance detection, the performance of the battery under different environments is comprehensively evaluated. In the service life test, the battery is usually placed in a constant room temperature environment (about 25℃), and a long-time cycle test is performed to verify the stability and durability of the battery in long-term use.

[0004] However, the commonly used thermostat at present mainly adopts an external circulation mode for temperature control. This mode has a significant energy loss problem, and it is difficult to ensure the uniformity of the temperature at each position in the thermostat. This temperature non-uniformity may cause a large error in the test results, thereby affecting the accurate evaluation of the performance and service life of the battery. CONTENT OF THE INVENTION

[0005] The present application aims to solve the above problems in the prior art and provides a battery testing device.

[0006] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0007] The embodiments of the present application provide a battery testing device, which comprises a thermostat having a first chamber and a second chamber, the first chamber is used for placing a battery, a temperature adjusting assembly is arranged in the second chamber, the temperature adjusting assembly comprises a shell having a ventilation cavity, and a cooling assembly and a heating assembly arranged in the ventilation cavity in a vertical direction, two ends of the ventilation cavity are respectively provided with an air inlet and an air outlet communicating with the first chamber, air in the thermostat enters the ventilation cavity through the air inlet, and then flows into the first chamber through the air outlet after being cooled by the cooling assembly or heated by the heating assembly to a test temperature.

[0008] Optionally, at least one test fixture for placing the battery is arranged in the first chamber, a sliding rail and a sliding member are arranged on the test fixture, and the battery is connected to the sliding rail through the sliding member.

[0009] Optionally, the test fixture further comprises a clamping assembly for clamping the battery, and a first adjusting assembly for adjusting a clamping distance of the clamping assembly, the clamping assembly is adjustably connected to the sliding member via the first adjusting assembly.

[0010] Optionally, the test fixture further comprises a test assembly for electrically connecting with the battery to detect a temperature and / or a voltage of the battery, and a second adjusting assembly for adjusting a height of the test assembly along a vertical direction, the test assembly is adjustably connected to the sliding member via the second adjusting assembly.

[0011] Optionally, the test assembly comprises an insulating block arranged on the test fixture, and a test probe arranged on the insulating block, the test probe is used for electrically connecting with the battery.

[0012] Optionally, the test probe comprises a temperature probe, a pole probe and a voltage probe arranged in parallel and spaced apart in the insulating block, the temperature probe, the pole probe and the voltage probe are respectively electrically connected with the pole of the battery.

[0013] Optionally, the thermostat further comprises a third chamber arranged along a horizontal direction with the first chamber, a control assembly is arranged in the third chamber, the control assembly is electrically connected with the cooling assembly and the heating assembly respectively.

[0014] Optionally, the thermostat further comprises a fourth chamber arranged along a horizontal direction with the second chamber, a power supply assembly is arranged in the fourth chamber, the control assembly is electrically connected with the cooling assembly and the heating assembly via the power supply assembly.

[0015] Optionally, the thermostat further comprises a fifth chamber arranged along a horizontal direction with the first chamber, a ventilation duct is arranged in the fifth chamber and communicates with the air inlet, air in the thermostat enters the ventilation chamber via the ventilation duct.

[0016] Optionally, a temperature sensor is arranged in the first chamber, the temperature sensor is used for detecting a temperature in the first chamber.

[0017] The beneficial effects of the present application include:

[0018] This application provides a battery testing device, including a constant temperature chamber with a first chamber and a second chamber. The first chamber is used to hold the battery, and a temperature regulating component is disposed in the second chamber. The temperature regulating component includes a shell with a ventilation cavity and a cooling component and a heating component arranged vertically within the ventilation cavity. An air inlet and an air outlet communicating with the first chamber are respectively provided at both ends of the ventilation cavity. Air from the constant temperature chamber enters the ventilation cavity through the air inlet, is cooled by the cooling component or heated to the test temperature by the heating component, and then flows back into the first chamber through the air outlet, thereby achieving air circulation and temperature control. This internal air circulation design achieves a constant temperature effect by repeatedly adjusting the air inside the constant temperature chamber and avoids direct involvement of external air, thus reducing interference from the external environment on the test temperature and improving the accuracy of the test results. Furthermore, the vertical arrangement of the cooling and heating components further optimizes space utilization, making the temperature regulating component occupy a smaller volume and providing a more compact structural design for the overall device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the structural schematic diagrams of a battery testing device provided in an embodiment of this application;

[0021] Figure 2 This is one of the structural schematic diagrams of a temperature control component provided in an embodiment of this application;

[0022] Figure 3 This is a second schematic diagram of the structure of a temperature control component provided in an embodiment of this application, as well as the airflow direction in the ventilation cavity;

[0023] Figure 4 This is a second schematic diagram of a battery testing device provided in an embodiment of this application;

[0024] Figure 5 This is one of the structural schematic diagrams of a test fixture provided in an embodiment of this application;

[0025] Figure 6 This is a second schematic diagram of the structure of a test fixture provided in an embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the structure of a test component provided in an embodiment of this application.

[0027] Icon: 1-constant temperature box; 11-first chamber; 12-second chamber; 13-third chamber; 14-fourth chamber; 15-fifth chamber; 2-temperature regulating assembly; 21-housing; 21a-air inlet; 21b-air outlet; 22-cooling assembly; 23-heating assembly; 3-test fixture; 31-rack; 32-sliding rail; 33-sliding piece; 34-placing rack; 35-fixing handle; 36-clamping assembly; 361-clamping plate; 362-clamping screw; 37-first adjusting assembly; 371-adjusting plate; 38-second adjusting assembly; 381-adjusting rack; 382-adjusting screw; 383-manual quick clamp; 39-test assembly; 391-insulating block; 392-temperature probe; 393-pole probe; 394-voltage probe; 395-compression spring; 4-control assembly; 5-power supply assembly; 6-ventilation duct; E-battery. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. It should be noted that the various features in the embodiments of the present application can be combined with each other without conflict, and the combined embodiments are still within the protection scope of the present application.

[0030] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] This application provides a battery testing device aimed at optimizing temperature control accuracy and energy efficiency during battery testing (E process). Figures 1 to 3 As shown, the battery testing device includes a constant temperature chamber 1, which has a first chamber 11 and a second chamber 12, each with a clearly defined function. The first chamber 11 is used to hold the battery E and is the core testing space for testing the performance and lifespan of the battery E. The second chamber 12 is equipped with a temperature control component 2, which is responsible for heating or cooling the air to provide stable temperature support for the testing environment.

[0035] Specifically, the temperature control component 2 includes a housing 21 with a ventilation cavity, and a cooling component 22 and a heating component 23 arranged vertically within the ventilation cavity. An air inlet 21a and an air outlet 21b communicating with the first chamber 11 are respectively provided at both ends of the ventilation cavity, forming an airflow path. Air inside the thermostat 1 first enters the ventilation cavity through the air inlet 21a, is regulated to the target test temperature by the cooling component 22 or the heating component 23, and then enters the first chamber 11 through the air outlet 21b, thereby achieving air circulation and temperature control. This internal air circulation design, by repeatedly regulating the air inside the thermostat 1, avoids direct involvement of external air, thus reducing interference from the external environment on the test temperature. Furthermore, the vertical arrangement of the cooling component 22 and the heating component 23 further optimizes space utilization, making the temperature control component 2 occupy a smaller volume and providing a more compact structural design for the overall device.

[0036] It should be noted that the cooling assembly 22 can be based on compressor refrigeration technology or semiconductor refrigeration sheet design, while the heating assembly 23 can be precisely heated by resistance wires or ceramic heating elements. The inner wall of the shell 21 of the ventilation cavity can be made of materials with excellent heat conduction performance, such as sheet metal, which helps to evenly distribute the cooling or heating temperature. In addition, in order to achieve the efficiency of air flow, an air extractor can be installed at the air inlet 21a of the ventilation cavity, and a fan is installed at the air outlet 21b of the ventilation cavity to drive the air to flow quickly from the air inlet 21a into the ventilation cavity and then from the air outlet 21b into the first chamber 11, improving the temperature control efficiency.

[0037] In general, the battery testing device can significantly improve the temperature uniformity in the thermostat 1 by internal circulation air temperature control, so as to accurately test the battery E under smaller temperature deviation and ensure the accuracy of the test results. At the same time, the internal circulation system can effectively avoid the energy loss caused by external circulation of hot air, reducing the operating cost of the device. In addition, the reasonable arrangement of the cooling assembly 22 and the heating assembly 23 in the ventilation cavity makes the device more compact, which not only saves device space, but also provides the possibility for modular design, helping to flexibly produce battery testing devices of different specifications.

[0038] Optionally, as shown in Figure 4 The thermostat 1 is composed of multiple functional chambers, in which the second chamber 12 and the first chamber 11 are arranged in a vertical direction from top to bottom, and a fifth chamber 15 is further arranged in a horizontal direction to further optimize the path of air flow and the temperature control effect.

[0039] Specifically, the top wall of the fifth chamber 15 is flush with the second chamber 12, and the bottom wall is flush with the first chamber 11. A ventilation duct 6 is arranged in the fifth chamber 15, which can be made of materials with excellent thermal insulation performance and low resistance to minimize heat loss during air flow. One end of the ventilation duct 6 is in communication with the air inlet 21a, and the other end is in communication with the bottom of the first chamber 11, and the air outlet 21b is in communication with the top of the first chamber 11. This structure design makes the air of the thermostat 1 first enter the ventilation cavity from the air inlet 21a through the ventilation duct 6, then adjust the temperature through the cooling assembly 22 or the heating assembly 23 in the ventilation cavity, and then uniformly distribute into the chamber from the top of the first chamber 11, and then flow out from the bottom of the first chamber 11 and return to the air inlet 21a of the ventilation cavity through the ventilation duct 6, forming a complete internal circulation system, ensuring that the first chamber 11 is always in a stable constant temperature state. This process not only effectively utilizes the principle of natural convection, but also greatly improves the air circulation speed through the synergistic effect of the fan and the air extractor.

[0040] It should be noted that in the battery E performance test and life test, the precise control of temperature is the key to ensure the reliability of the test results. The performance test usually requires the test environment temperature to cycle within the range of -25℃ to 40℃, to simulate the running performance of the battery E in the extreme high temperature and low temperature environment. While the life test requires the test environment temperature to be stably controlled at about 25℃ (room temperature), to evaluate the performance decay and durability of the battery E in the long-term working state. Therefore, the first chamber 11 in the device needs to have a wide temperature adjustment capability, to ensure that it can meet the different test requirements mentioned above.

[0041] Optionally, the cooling assembly 22 usually includes an air conditioner compressor and a horizontally placed condenser, and the heating assembly 23 adopts a horizontally placed electric heating pipe, which are arranged in the vertical direction from top to bottom in the ventilation chamber, so as to optimize the heat exchange path of the air, shorten the temperature adjustment time, and improve the energy utilization efficiency. The air conditioner compressor is arranged in the fifth chamber 15, and forms a closed loop refrigeration circuit (the cold air generated by the air conditioner compressor flows into the condenser pipe through the condenser inlet, and then flows out back to the air conditioner compressor through the condenser outlet) by being connected with the condenser. In the air flow process, the air pump first draws the air at the bottom of the first chamber 11 through the ventilation pipe 6 to the air inlet 21a, so that it flows through the condenser and the electric heating pipe in turn. In the high temperature test, the condenser is closed, and only the electric heating pipe is started, so that the air is heated when flowing through the electric heating pipe; in the low temperature test, the electric heating pipe is closed, and only the condenser is started, and the cold air generated by the air conditioner compressor after refrigeration reduces the air temperature. Then, the adjusted air is sent back into the first chamber 11 through the air outlet 21b by the driving of the fan, to complete the internal circulation process of temperature adjustment.

[0042] In actual use, when it is needed to test the battery E in a high temperature environment (such as 40℃), the system controls the device to close the condenser and open the electric heating pipe. The air pump draws the air in the first chamber 11 to the ventilation chamber, and the air is heated after flowing through the electric heating pipe, and then is sent back to the top of the first chamber 11 by the fan, to form a high temperature environment. When it is needed to test the battery E in a low temperature environment (such as -25℃), the system closes the electric heating pipe and opens the condenser, and the air is cooled after flowing through the condenser, and then is sent back to the top of the first chamber 11 by the fan, to form a low temperature environment.

[0043] In summary, the device can realize precise control of the test environment temperature through the organic combination of the cooling assembly 22 and the heating assembly 23, so that the first chamber 11 can meet the requirements of a wide temperature range for battery E performance testing and life testing. In addition, the design of the air conditioner compressor in the fifth chamber 15 and the ventilation duct 6 can further optimize the space utilization of the system, making the air circulation path more compact and efficient. At the same time, the cooperation of the fan and the exhaust fan can effectively avoid the problem of local air stagnation or temperature gradient that may occur in traditional systems, ensuring the uniformity of the air temperature in the first chamber 11.

[0044] Optionally, a temperature sensor is also arranged in the first chamber 11, which is used to detect the temperature in the first chamber 11. The temperature sensor can adopt high-precision and strong anti-interference types such as thermal resistance or thermocouple, etc., to ensure the accuracy and reliability of the data. In addition, in order to improve the detection coverage and temperature control uniformity, multiple temperature sensors can be arranged on the top, bottom or side wall of the first chamber 11, and the data of all temperature sensors is integrated into the unified control assembly 4. Through comprehensive analysis of multi-point temperature data, the temperature distribution in the first chamber 11 is further optimized.

[0045] Optionally, as shown in Figure 4 In order to further realize the functional partitioning and modular design inside the device, the thermostat 1 is provided with a third chamber 13 arranged horizontally with the first chamber 11. The third chamber 13 is mainly used to accommodate the control assembly 4, and the fifth chamber 15 is located between the first chamber 11 and the third chamber 13, which not only undertakes the task of arranging the ventilation duct 6, but also can be used as a maintenance passage of the device. This layout design not only can optimize the utilization of the internal space of the device, but also can improve the maintainability and operating efficiency of the system.

[0046] Specifically, the control assembly 4 is electrically connected with the cooling assembly 22, the heating assembly 23 and the temperature sensor in the first chamber 11, respectively, to form a closed-loop control system for dynamically adjusting the temperature in the first chamber 11. The temperature sensor detects the temperature of the first chamber 11 in real time and transmits the signal to the control assembly 4. The real-time data collected by the temperature sensor is processed by the control assembly 4 to generate corresponding instructions to control the cooling power of the cooling assembly 22 or the heating power of the heating assembly 23. The working state of the cooling assembly 22 and the heating assembly 23 is accurately switched by the control assembly 4, so that the temperature in the first chamber 11 is maintained near the test temperature.

[0047] The control assembly 4 generally includes a processing unit, a signal interface, and a control output module. The processing unit uses a high-performance microprocessor to quickly calculate and analyze the data collected by the temperature sensor, generating accurate control instructions. The signal interface is responsible for receiving sensor signals and converting them into a format that the controller can recognize, while the control output module is used to drive the operation of the cooling assembly 22 and the heating assembly 23. All components are centrally installed in the third chamber 13, forming an independent functional unit that is easy to operate and maintain.

[0048] Optionally, as shown in Figure 4 , to further optimize the functional layout of the thermostat 1, the thermostat 1 is also designed with a fourth chamber 14 arranged horizontally along the second chamber 12, and the fourth chamber 14 is also arranged vertically from top to bottom with the third chamber 13, forming a reasonable partitioning and compact and orderly system structure. The main function of the fourth chamber 14 is to accommodate the power supply assembly 5, providing stable and reliable power support for each key module in the thermostat 1.

[0049] Specifically, the control assembly 4 forms a control loop with the power supply assembly 5, the cooling assembly 22, and the heating assembly 23 through electrical connection. The power supply assembly 5 is responsible for providing the required power to the cooling assembly 22 and the heating assembly 23 after rectification and stabilization of the external power supply, while the control assembly 4 controls the working state of the cooling assembly 22 and the heating assembly 23 by adjusting the output voltage and current of the power supply assembly 5 according to the real-time temperature data fed back by the temperature sensor. This closed-loop design can ensure that the temperature in the thermostat 1 can be accurately maintained within the preset range, whether it is high-temperature or low-temperature testing, it can quickly respond and adjust to the test temperature.

[0050] Optionally, to achieve efficient and accurate battery E testing, a test fixture 3 is provided in the first chamber 11, or a plurality of test fixtures 3 are provided in the first chamber 11 and arranged vertically. Figure 5 and Figure 6 As shown in , the test fixture 3 is composed of a slide rail 32 fixed on the rack 31, a sliding piece 33 slidingly connected to the slide rail 32, and a placing rack 34 fixed on the sliding piece 33. Through this drawer-type sliding design, the sliding piece 33 can freely slide in and out of the first chamber 11 along the slide rail 32, greatly facilitating the taking and placing operation of the battery E. The user only needs to pull the sliding piece 33 out of the first chamber 11 by setting the push-pull handle on the sliding piece 33, fix the battery E on the placing rack 34, then push the sliding piece 33 back into the first chamber 11, and lock it in place by the fixed handle 35. This design not only improves the operation convenience, but also ensures the stability and safety during testing. After closing the door of the first chamber 11, the system can start the temperature control assembly and related equipment to begin the performance or life test of the battery E.

[0051] It should be noted that one, two or more placing racks 34 can be provided on the sliding member 33, which can be made of sheet metal to ensure the strength and durability of the structure. Each placing rack 34 can accommodate a battery E, so that the first chamber 11 can accommodate multiple batteries E, thereby achieving simultaneous testing of multiple batteries E and greatly improving the testing efficiency of the device. In order to further improve the temperature control accuracy and the efficiency of battery E testing, the first chamber 11 can be divided into multiple first sub-chambers, and correspondingly, the second chamber 12 is also divided into second sub-chambers with the same number as the first sub-chambers, and an independent temperature adjusting assembly 2 is arranged in each second sub-chamber. Each temperature adjusting assembly 2 is responsible for adjusting the temperature of the corresponding first sub-chamber, and through an independent air circulation system, precise temperature control of different first sub-chambers is achieved. When multiple first sub-chambers are tested at the same time, the independent temperature control system can ensure that the temperature fluctuation range of each first sub-chamber is extremely small, avoiding test errors caused by temperature differences.

[0052] Overall, this modular and multi-chamber design not only optimizes the space utilization of the device, but also greatly improves the flexibility, accuracy and efficiency of the test. More importantly, through the independent operation of the multi-chamber temperature control system, the energy consumption of single-chamber temperature control can be reduced, making the overall operation of the device more energy-efficient.

[0053] Optionally, as shown in Figure 5 and Figure 6 In order to adapt to batteries E of different shapes and thicknesses, a clamping assembly 36 and a first adjusting assembly 37 are provided on the placing rack 34 of the test fixture 3. The core function of the clamping assembly 36 is to stably fix the battery E and prevent it from moving during the test, thereby ensuring the accuracy and consistency of the test. The clamping assembly 36 is composed of two clamping plates 361 arranged oppositely and at intervals, which are clamped by clamping screws 362. When the clamping screws 362 rotate, the clamping plates 361 can move inward to firmly clamp the battery E between them, providing reliable mechanical support. At the same time, the design of the clamping screws 362 allows the clamping force to be accurately adjusted as needed to avoid damaging the surface or internal structure of the battery E, which is suitable for testing battery E types with high clamping requirements.

[0054] The first adjusting assembly 37, in cooperation with the clamping assembly 36, can adapt to batteries E of different thicknesses. Specifically, the first adjusting assembly 37 includes at least two adjusting plates 371, which are slidingly installed on the sliding member 33 along the clamping direction. Each clamping plate 361 is fixed to a different adjusting plate 371, and when the adjusting plates 371 slide relative to each other, the distance between the clamping plates 361 changes, thereby adjusting the clamping distance. After adjustment, the two clamping plates 361 are clamped by the clamping screw 362, and the battery E is fixed. This design makes the testing device flexible and adaptable to various specifications of batteries E, whether it is a thin blade battery or other shapes or thicker batteries E such as square batteries, cylindrical batteries, etc. The clamping distance can be adjusted to achieve stable fixation.

[0055] Optionally, as shown in Figure 5 and Figure 6 To ensure the accuracy and stability of the battery E test, a test assembly 39 and a second adjusting assembly 38 are added to the test fixture 3. The main function of the test assembly 39 is to monitor the temperature and / or voltage of the battery E in real time through electrical connection, ensuring the accuracy and integrity of the data during testing. The test assembly 39 is adjustably installed on the sliding member 33 by the second adjusting assembly 38, which can adjust the height of the test assembly 39 in the vertical direction, so that the height of the test assembly 39 is accurately matched with the height of the battery E's pole, thereby achieving stable and reliable electrical connection, ensuring complete transmission of test signals, effectively preventing poor contact caused by height mismatch, and improving test reliability.

[0056] In addition, to further optimize the connection flexibility between the test assembly 39 and the battery E, the first adjusting assembly 37 is designed to slide not only in the clamping direction but also in the sliding direction of the sliding member 33. This function allows the test assembly 39 to adjust the distance from the battery E in the sliding direction of the sliding member 33 as needed to accommodate different specifications and layouts of the battery E. Thus, by adjusting the horizontal distance between the test assembly 39 and the battery E through the first adjusting assembly 37, and adjusting the vertical height of the test assembly 39 through the second adjusting assembly 38, the test assembly 39 can be accurately positioned in three-dimensional space. Finally, the test assembly 39 is stably pressed against the battery E's pole by the manual quick clamp 383. This multi-dimensional adjustment capability not only improves the versatility of the device, but also significantly reduces the difficulty of operation and testing errors, ensuring quick installation and detection of different types of batteries E on the same device.

[0057] Optionally, as shown in Figure 6 and Figure 7As shown, the test assembly 39 includes an insulating block 391 mounted on the test fixture 3, and test probes mounted on the insulating block 391. The insulating block 391 serves as a support structure for the test probes, providing excellent electrical insulation to prevent signal interference caused by conductivity. One end of the test probe directly contacts the terminal of the battery E, and the other end is connected to the control assembly 4 via a cable, thereby enabling signal transmission between the battery E and the control assembly 4. Through this design, the test device can acquire voltage and temperature data of the battery E in real time, providing accurate basic data for performance and lifespan testing.

[0058] Specifically, the second adjustment assembly 38 includes an adjustment frame 381 and an adjustment screw 382 passing through the adjustment frame 381. An insulating block 391 is slidably mounted on the adjustment frame 381 in the vertical direction and is drivenly connected to the adjustment screw 382. When the adjustment screw 382 is rotated, the insulating block 391 moves vertically, thereby adjusting the height of the test probe. This structural design allows the test probe to flexibly adapt to batteries E of various sizes and types, achieving a stable and reliable electrical connection regardless of changes in terminal height. This height adjustment capability significantly improves the versatility and applicability of the device, meeting different testing needs.

[0059] To further improve testing accuracy, test probes can be installed on both ends of battery E. By placing test probes on both the positive and negative ends, the device can simultaneously monitor the temperature and voltage on both sides of battery E, forming a multi-point data acquisition system. This multi-point testing method not only improves data accuracy but also provides richer evidence for a comprehensive evaluation of battery E's performance and condition. The acquisition and comparison of multi-point data helps to quickly identify potential problems, such as voltage imbalance or temperature anomalies, thereby improving the diagnostic capability and reliability of the test.

[0060] Optionally, such as Figure 7 As shown, the test probes include a temperature probe 392, a terminal probe 393, and a voltage probe 394. These probes are arranged in parallel within the insulating block 391 at intervals, ensuring electrical isolation and functional division between the probes. The temperature probe 392 is used to monitor the operating temperature of the battery E, the terminal probe 393 is responsible for current transmission, and the voltage probe 394 is used to detect the voltage state of the battery E. All three probes are directly pressed into the terminals of the battery E, ensuring the accuracy of data acquisition and the real-time nature of transmission.

[0061] Optionally, such as Figure 7As shown, the structure of the pole post probe 393 can be further optimized to have both supporting and integrating functions. The pole post probe 393 is provided with a mounting portion, by which the temperature probe 392 and the voltage probe 394 are connected to the pole post probe 393 as a whole to form a multifunctional test unit. Such an integrated design can not only reduce the number of probes and save space, but also effectively improve the docking accuracy of the probes and the pole of the battery E.

[0062] Meanwhile, a compression spring 395 is arranged between the pole post probe 393 and the insulating block 391, so that the test probe can float along the deformation direction of the compression spring 395. The introduction of the compression spring 395 can enhance the adaptability of the probe to different specifications of the battery E. Even if there is a slight difference in the height or position of the pole of the battery E, the test probe can automatically adjust the position through floating to ensure reliable contact with the pole. Such a flexible floating design can improve the stability of the test process and reduce the test errors caused by poor contact of the probe.

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery testing device, characterized by, The application relates to a thermostat (1) comprising a first chamber (11) for placing a battery (E) and a second chamber (12) provided with a temperature regulating assembly (2), wherein the temperature regulating assembly (2) comprises a casing (21) provided with a ventilation cavity and a cooling assembly (22) and a heating assembly (23) arranged in the ventilation cavity in a vertical direction, air in the thermostat (1) enters the ventilation cavity through an air inlet (21a) at one end of the ventilation cavity and flows into the first chamber (11) through an air outlet (21b) at the other end of the ventilation cavity after being cooled by the cooling assembly (22) or heated by the heating assembly (23) to a test temperature.

2. The battery testing device of claim 1, wherein, At least one test fixture (3) for placing the battery (E) is arranged in the first chamber (11), wherein a sliding rail (32) and a sliding piece (33) are arranged on the test fixture (3), and the battery (E) is slidably connected to the sliding rail (32) through the sliding piece (33).

3. The battery testing device of claim 2, wherein, A clamping assembly (36) and a first adjusting assembly (37) are further arranged on the test fixture (3), the clamping assembly (36) is used for clamping the battery (E), the clamping assembly (36) is adjustably connected to the sliding piece (33) through the first adjusting assembly (37), and the first adjusting assembly (37) is used for adjusting the clamping spacing of the clamping assembly (36).

4. The battery testing device of claim 2 or 3, wherein, A test assembly (39) and a second adjusting assembly (38) are further arranged on the test fixture (3), the test assembly (39) is used for electrically connecting with the battery (E) to detect the temperature and / or voltage of the battery (E), the test assembly (39) is adjustably connected to the sliding piece (33) through the second adjusting assembly (38), and the second adjusting assembly (38) is used for adjusting the height of the test assembly (39) in the vertical direction.

5. The battery testing device of claim 4, wherein, The test assembly (39) comprises an insulating block (391) arranged on the test fixture (3) and a test probe arranged on the insulating block (391), and the test probe is used for electrically connecting with the battery (E).

6. The battery testing device of claim 5, wherein, The test probe comprises a temperature probe (392), a pole probe (393) and a voltage probe (394) which are arranged in parallel and at intervals in the insulating block (391), and the temperature probe (392), the pole probe (393) and the voltage probe (394) are electrically connected with the pole of the battery (E) respectively.

7. The battery testing device of any one of claims 1 to 3, wherein, The thermostat (1) further comprises a third chamber (13) arranged in a horizontal direction with the first chamber (11), and a control assembly (4) is arranged in the third chamber (13), and the control assembly (4) is electrically connected with the cooling assembly (22) and the heating assembly (23) respectively.

8. The battery testing device of claim 7, wherein, The thermostat (1) further has a fourth chamber (14) arranged horizontally with the second chamber (12), and a power supply assembly (5) is arranged in the fourth chamber (14), and the control assembly (4) is electrically connected with the cooling assembly (22) and the heating assembly (23) respectively through the power supply assembly (5).

9. The battery testing device of any one of claims 1 to 3, wherein, The thermostat (1) further has a fifth chamber (15) arranged horizontally with the first chamber (11), and a ventilation duct (6) is arranged in the fifth chamber (15) and communicates with the air inlet (21a), and air in the thermostat (1) enters the ventilation cavity through the ventilation duct (6).

10. The battery testing device of any one of claims 1 to 3, wherein, A temperature sensor is further arranged in the first chamber (11), and the temperature sensor is used for detecting the temperature in the first chamber (11).

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