Battery testing device

Abstract

The utility model belongs to the technical field of battery device detection, and provides a battery testing device which comprises a rack, a liquid level sensor, a temperature detector and a control system. The rack comprises a bearing table and an adjusting mechanism, the bearing table is used for bearing the battery device, and the adjusting mechanism is connected with the bearing table and used for adjusting the inclination angle of the bearing table; the liquid level sensor is used for detecting the liquid level position and the flowing path of the heat exchange medium in the battery device; the temperature detector is used for detecting the surface temperature of the battery device; the control system is electrically connected with the liquid level sensor and the temperature detector so as to receive detection data of the liquid level sensor and detection data of the temperature detector, and the control system is electrically connected with the adjusting mechanism so as to control the adjusting mechanism to act. The utility model aims to improve the accuracy of a heat exchange medium leakage test of a battery device and improve the accuracy of leakage point detection.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery detection, and particularly relates to a battery testing device. BACKGROUND

[0002] With the rise of new energy equipment represented by new energy vehicles, battery devices have become a key power source. The battery device includes a box body and a battery monomer. The battery monomer is a main component for charging and discharging. The battery monomer will cause temperature change during the charging and discharging process. Therefore, a heat exchange component needs to be arranged in the battery device. The heat exchange component generally uses a heat exchange medium as a medium to exchange heat. During the use of the battery device, the heat exchange medium may have a risk of leakage. The leakage of the heat exchange medium may cause battery short circuit or corrosion, increasing the risk of fire. The entry of the heat exchange medium into the inside of the battery device will destroy the electrochemical environment thereof and affect the battery performance. In addition, the leakage will reduce the efficiency of the heat exchange medium, cause abnormal temperature of the battery device, accelerate aging, and shorten the service life. When the battery device is arranged in a vehicle, the driving environment of the vehicle is various, and the battery device constantly changes the posture with the movement of the vehicle. Under this working condition, the leakage of the heat exchange medium is increased. Therefore, the leakage test of the heat exchange medium needs to be performed on the battery device before it is shipped from the factory to find possible leakage points. However, the existing testing device has low accuracy in the leakage test of the heat exchange medium. The posture of the battery device under the use scene cannot be well simulated in the test, and the leakage points may be ignored. The test effect is poor. CONTENT OF THE UTILITY MODEL

[0003] In view of the above problems, the application provides a battery testing device, which aims to improve the accuracy of the leakage test of the heat exchange medium of the battery device and improve the accuracy of the leakage point detection.

[0004] To solve the above problems, the application provides a battery testing device, which comprises:

[0005] A rack, which comprises a bearing table and an adjusting mechanism. The bearing table is used for bearing the battery device. The adjusting mechanism is connected to the bearing table and is used for adjusting the inclination angle of the bearing table.

[0006] A liquid level sensor, which is used for detecting the liquid surface position and flow route of the heat exchange medium in the battery device.

[0007] A temperature detector, which is used for detecting the surface temperature of the battery device.

[0008] A control system, which is electrically connected to the liquid level sensor and the temperature detector to receive the detection data of the liquid level sensor and the detection data of the temperature detector. The control system is electrically connected to the adjusting mechanism to control the action of the adjusting mechanism.

[0009] The embodiment has the effect of improving the accuracy of the heat exchange medium leakage test inside the battery device.

[0010] In some embodiments, the adjusting mechanism comprises a base and a telescopic mechanism, the telescopic mechanism is electrically connected with the control system, the telescopic mechanism has a first end and a second end oppositely arranged along the telescopic direction of the telescopic mechanism, the first end is connected to the base, and the second end is connected to the carrying table.

[0011] The embodiment has the effect of simple structure and easy operation, and the angle adjustment of the carrying table can be realized by the pushing of the telescopic mechanism.

[0012] In some embodiments, the adjusting mechanism further comprises a first universal joint and a second universal joint, the first universal joint is used to connect the first end and the base, and the second universal joint is used to connect the second end and the carrying table.

[0013] The embodiment has the effect of increasing the adjustment range by the adjustment of the universal joint during the pushing of the telescopic mechanism, freely adjusting the inclination angle of the carrying table, reducing the structural limitation, and increasing the flexibility of the adjustment.

[0014] In some embodiments, the adjusting mechanism comprises at least three telescopic mechanisms, and the at least three telescopic mechanisms are arranged along the circumferential direction of the carrying table.

[0015] At least three telescopic mechanisms are arranged between the base and the carrying table, that is, the at least three telescopic mechanisms are used to support the carrying table, the three telescopic mechanisms can determine the telescopic range under the control of the control system, thereby increasing the adjustable angle range of the carrying table, increasing the number of adjustable postures of the battery device, and the at least three telescopic mechanisms are further arranged along the circumferential direction of the carrying table, and the different positions of the carrying table are pushed to further increase the adjustment range.

[0016] In some embodiments, the at least three telescopic mechanisms are connected to the circumferential edge of the carrying table and arranged along the circumferential direction of the carrying table.

[0017] The embodiment further provides that the at least three telescopic mechanisms are connected to the circumferential edge of the carrying table, that is, the edge of the carrying table, and the at least three telescopic mechanisms connected to the edge of the carrying table are also arranged along the circumferential direction of the carrying table, which can further increase the adjustment range of the carrying table and increase the number of adjustable postures of the battery device.

[0018] In some embodiments, the number of telescopic mechanisms is six.

[0019] The effect of the embodiment is that the bearing table can be moved to any position within the adjustable space range, and can also rotate around three mutually perpendicular axes, realizing full adjustment of the attitude of the battery device itself.

[0020] In some embodiments, the battery testing device further comprises a rack, the rack comprising a first frame body, a second frame body and a plurality of support rods, the first frame body and the second frame body being arranged apart along a first direction, and the plurality of support rods being used to connect the first frame body and the second frame body, the rack being mounted on the first frame body, and the liquid level sensor being mounted on the second frame body and arranged opposite to the bearing table.

[0021] The effect of the embodiment is that the first frame body and the second frame body are arranged respectively to place the rack and the liquid level sensor, which positions the rack and also realizes the arrangement of the liquid level sensor, and facilitates the detection of the battery device on the bearing table of the rack by the liquid level sensor, and the support rods play a connecting role, so that the first frame body and the second frame body can be moved simultaneously, thereby driving the rack and the liquid level sensor to move simultaneously.

[0022] In some embodiments, the rack further comprises a mounting beam, the mounting beam being mounted on the second frame body and being reciprocally movable along a second direction, and the liquid level sensor being mounted on the second frame body through the mounting beam, and the second direction being perpendicular to the first direction.

[0023] The effect of the embodiment is that the position of the liquid level sensor can be adjusted in the second direction, thereby increasing the detection range of the battery device and detecting the heat exchange medium of the battery device in all directions to increase the accuracy of detection.

[0024] In some embodiments, the rack further comprises a first mounting member, the first mounting member being mounted on the mounting beam and being reciprocally movable along a third direction, and the liquid level sensor being mounted on the mounting beam through the first mounting member, and the third direction being perpendicular to the first direction and the second direction.

[0025] The effect of the embodiment is to further increase the detection range of the liquid level sensor on the battery device.

[0026] In some embodiments, the liquid level sensor is rotatably mounted on the first mounting member. The liquid level sensor can be connected to the first mounting member through a universal ball, a universal joint or a shaft body to adjust the orientation of the liquid level sensor and increase the detection range.

[0027] In some embodiments, the temperature detector is mounted on the support rod. This facilitates temperature detection.

[0028] In some embodiments, the rack further comprises a second mounting member mounted on the support rod and movable reciprocally along the first direction, and the temperature detector is mounted on the support rod through the second mounting member.

[0029] The embodiment has the effect of providing a temperature detector arrangement, which is simple in structure and easy to operate, and which achieves position adjustment of the temperature detector in the first direction to comprehensively detect the surface temperature of the battery device.

[0030] In some embodiments, the rack further comprises a plurality of moving wheels, which are arranged one by one at the ends of the plurality of support rods away from the second frame body.

[0031] The embodiment provides moving wheels, the support rods can be vertically arranged, the number of the support rods can be four, which are four vertical rods supporting the ground, and the moving wheels are arranged at the bottom of the support rods, so that the whole device can walk by means of the moving wheels, and the overall position can be adjusted conveniently.

[0032] In some embodiments, the carrying table is provided with a limiting structure, and the limiting structure is used to limit the position of the battery device.

[0033] The embodiment provides a limiting structure, which can keep the battery device stable relative to the carrying table when the position of the battery device is adjusted, and reduces the risk of falling off.

[0034] In some embodiments, the limiting structure comprises a limiting groove recessed in the carrying table, and the limiting groove is used to accommodate at least part of the battery device.

[0035] The embodiment provides a limiting groove arranged on the carrying table, which is a groove structure opened on the surface of the carrying table and has a certain depth, and the limiting groove can accommodate the battery device, and the groove wall of the limiting groove has a certain limiting effect on the battery device, so that the carrying table can prevent the battery device from falling off when the carrying table drives the battery device to change position.

[0036] In some embodiments, the limiting structure further comprises an elastic component arranged on the groove side wall of the limiting groove and used to press the battery device.

[0037] The embodiment provides an elastic component used to contact the battery device and stabilize the position of the battery device, which can increase the stability of the battery device during adjustment with the carrying table, reduce the relative movement between the battery device and the carrying table, and thus facilitate the monitoring of the heat exchange medium.

[0038] In some embodiments, the elastic component comprises:

[0039] a mounting plate arranged on the side wall of the limiting groove; and

[0040] A spring sheet is arranged on the side of the mounting plate facing the battery device, and is pressed between the mounting plate and the battery device.

[0041] The spring sheet has elasticity, and the mounting plate provides a mounting position, so that the battery device is pressed, and the spring sheet does not have hard contact with the battery device when pressing.

[0042] In some embodiments, a plurality of locking portions are arranged on the mounting plate, and the two ends of the spring sheet are connected to any of the locking portions, so that the spring sheet forms an arc surface.

[0043] The spring sheet is pressed to form an arc surface, so that the elasticity is increased, the battery device is better pressed, and the contact area between the spring sheet and the battery device is increased, so that the stability of the battery device is increased.

[0044] In some embodiments, the locking portion includes a locking ring fixed to the mounting plate, the spring sheet is provided with a plug hole aligned with the locking ring, and the locking ring and the plug hole are used to simultaneously insert a locking rod to lock the spring sheet. This locking form is simple and reliable, and the effect is more direct.

[0045] In some embodiments, the side of the mounting plate away from the battery device is provided with a pushing piece, the pushing piece is used to drive the mounting plate to be close to or away from the battery device, and the pushing piece passes through the slot side wall of the limiting slot and is exposed outside the limiting slot.

[0046] The size of the battery device is different, the position of the mounting plate can be adjusted, when the battery device is small, the mounting plate is pushed to be close to the battery device, so that the battery device can be pressed, and the pressing force can be adjusted. The pushing piece can be a pushing rod, and the exposed end of the pushing rod can be connected to a cylinder or the like after passing through the slot wall, so that the pushing is performed.

[0047] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0049] Figure 1 Structure diagram of battery testing device for some embodiments of the present application;

[0050] Figure 2 Structure diagram of Figure 1 Structure diagram of telescopic mechanism, first universal joint and second universal joint in the embodiment;

[0051] Figure 3 Structure diagram of Figure 1 Structure diagram of magnification at A in the embodiment;

[0052] Figure 4 Structure diagram of magnification at B in the embodiment; Figure 1

[0053] Figure 5 Structure diagram of gantry in the embodiment; Figure 1

[0054] Structure diagram of Figure 6 Figure 5 Structure diagram of elastic component in the embodiment.

[0055] Reference numerals in the detailed description are as follows:

[0056] 1, gantry; 11, bearing table; 12, adjusting mechanism; 121, base; 122, telescopic mechanism; 123, first universal joint; 124, second universal joint; 13, battery device; 14, liquid level sensor; 15, temperature probe; 16, rack; 161, support rod; 162, first rack body; 163, second rack body; 17, mounting beam; 18, first mounting piece; 181, sliding sleeve; 182, fixing seat; 19, second mounting piece; 191, moving seat; 192, connecting plate; 193, locking piece; 20, limiting groove; 21, elastic component; 211, mounting plate; 212, elastic sheet; 22, locking part; 23, pushing piece; 24, plug-in rod; 25, locking rod. Detailed description of the embodiments

[0057] The embodiments of the technical solutions of the present application will be described in detail below in combination with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.​​

[0059] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0060] In this paper, the reference to "embodiments" means that the specific features, structures or properties described in conjunction with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0061] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0062] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0063] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0064] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0065] At present, from the development of market situation, the application of battery device is more and more widely. The battery device is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military and police equipment, aerospace and other fields. With the continuous expansion of the application field of battery, the demand of its market is also increasing.

[0066] The battery device is a complete structural whole, including a box body, a plurality of battery monomers are arranged in the box body, and a battery monomer can also be arranged in the box body in some special scenarios. When the battery monomers are multiple, the same row of battery monomers can form a battery monomer assembly.

[0067] The box body can be part of the chassis structure of the vehicle. For example, part of the box body can be at least part of the floor of the vehicle, or part of the box body can be at least part of the cross beam and the longitudinal beam of the vehicle.

[0068] The battery device can include one or more battery monomer assemblies for providing voltage and capacity. The battery monomer assembly can include a plurality of battery monomers connected in series, in parallel or in mixed connection through a busbar component. The mixed connection refers to a mixture of series connection and parallel connection.

[0069] The battery monomer assembly is usually formed by arranging a plurality of battery monomers.

[0070] As an example, the battery monomer assembly can be a battery module, and the battery monomer assembly is formed by arranging and fixing a plurality of battery monomers to form an independent module. As an example, the battery monomer assembly can be formed by bundling a plurality of battery monomers by a cable tie.

[0071] The battery device can be a battery pack, and the battery pack includes a box body and one or more battery monomer assemblies, and the battery monomer assemblies are accommodated in the box body.

[0072] As an example, the battery monomer assembly can be a battery module, and the battery monomer assembly can be accommodated in the box body by fixing the battery module in the box body.

[0073] As an example, the battery monomer assembly can also be accommodated in the box body by directly fixing a plurality of battery monomers in the box body.

[0074] The battery device 13 of the embodiment of the present application can be arranged in a power consumption device, i.e., a power consumption device using the battery device 13 as a power supply.

[0075] The electric device can be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, or the like. The spacecraft includes an airplane, a rocket, a space shuttle, a spacecraft, or the like. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric automobile toy, an electric ship toy, an electric airplane toy, or the like. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool, and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact electric drill, a concrete vibrator, an electric planer, or the like. The electric device is not specially limited in the embodiments of the present application.

[0076] The battery device 13 can be used in an electric device such as a vehicle, a ship, or an aircraft. The electric device can use the power supply system with the battery device 13.

[0077] The electric device is taken as a vehicle for example.

[0078] The vehicle can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile, or a range extended automobile, or the like. The vehicle is internally provided with the battery device 13, which can be arranged at the bottom, the head, or the tail of the vehicle. The battery device 13 can be used for power supply of the vehicle, for example, as an operating power source of the vehicle. The vehicle can further include a controller and a motor, and the controller is used to control the battery device 13 to supply power to the motor, for example, for working power demand of the vehicle during starting, navigation, and driving.

[0079] The battery device 13 can not only be used as an operating power source of the vehicle, but also be used as a driving power source of the vehicle, to replace or partially replace fuel or natural gas to provide driving power for the vehicle.

[0080] The battery device 13 includes a heat exchange assembly, which exchanges heat with the battery monomer through a heat exchange medium, so as to keep the battery monomer at a suitable temperature. The heat exchange medium of the battery device 13 can leak, and when the heat exchange medium leaks, it can cause serious consequences. Therefore, it is necessary to detect the leakage point of the heat exchange medium of the battery device 13. When the battery device 13 is arranged on the vehicle, the posture of the battery device 13 changes constantly during driving of the vehicle, and the risk of leakage increases. Therefore, the battery device 13 needs to simulate different postures that can exist in different use scenarios of the battery device 13 before leaving the factory, so as to test the leakage of the heat exchange medium and determine the possible leakage point.

[0081] In the related art, the leakage test accuracy of the heat exchange medium of the battery device is low, and the posture of the battery device in the use scenario cannot be well simulated, and the test effect is poor.

[0082] Based on this, the application provides a specific embodiment of a battery testing device, aiming to improve the accuracy of the heat exchange medium leakage test of the battery device 13 and improve the accuracy of the leakage point detection.

[0083] Please refer to Figures 1-5 The battery testing device provided by the embodiment of the application comprises a rack 1, a liquid level sensor 14, a temperature detector 15 and a control system.

[0084] The rack 1 comprises a bearing table 11 and an adjusting mechanism 12, the bearing table 11 is used for bearing the battery device 13, the adjusting mechanism 12 is connected to the bearing table 11, and the adjusting mechanism 12 is used for adjusting the inclination angle of the bearing table 11; the liquid level sensor 14 is used for detecting the liquid surface position and flow route of the heat exchange medium in the battery device 13; the temperature detector 15 is used for detecting the surface temperature of the battery device 13; the control system is electrically connected to the liquid level sensor 14 and the temperature detector 15 to receive the detection data of the liquid level sensor 14 and the detection data of the temperature detector 15, and the control system is electrically connected to the adjusting mechanism 12 to control the action of the adjusting mechanism 12.

[0085] In this embodiment, the battery device 13 is placed on the bearing table 11, the angle of the bearing table 11 is adjusted by the adjusting mechanism 12, the posture of the battery device 13 is changed, the liquid level sensor 14 is used to test the liquid surface position and flow route of the internal heat exchange medium of the battery device 13 in different postures, such as the liquid surface height, to determine the possible leakage points of the heat exchange medium, and the temperature detector 15 is used to detect the surface temperature of the battery device 13, thereby assisting in determining the leakage points.

[0086] The control system can control the adjusting mechanism 12 to act, thereby realizing the adjustment of the position of the bearing table 11. The control system can also be used to receive the signals of the liquid level sensor 14 and the temperature detector 15 to analyze and determine the leakage points.

[0087] In this embodiment, the inclination angle of the bearing table 11 is adjusted, different setting postures of the battery device 13 are realized, the use scene of the battery device 13 in different postures can be better simulated, the testing can be more accurately performed, and the accuracy of determining the possible leakage points is improved.

[0088] Specifically, the liquid level sensor 14 can be an ultrasonic liquid level sensor, and the control system can be configured with computational fluid dynamics software. The ultrasonic liquid level sensor can be used in combination with the computational fluid dynamics software to achieve real-time detection and analysis of the flow path and flooding height of the heat exchange medium after injection. In combination with the infrared thermal imager, the temperature of the battery device 13 can be monitored in real time. The ultrasonic liquid level sensor measures the liquid level and flow path by emitting high-frequency sound wave pulses and using the principle of sound wave reflection on the liquid surface, thereby obtaining the change in the flooding height of the heat exchange medium in real time. It has the advantages of high precision and non-contact measurement, and can quickly respond to changes in the liquid level to provide accurate liquid level data for testing. The control system can control the adjusting mechanism 12 to adjust the posture of the battery device 13. The control system simulates the flow process of the heat exchange medium inside the battery device 13 through the computational fluid dynamics software, displays the flow path, flow velocity distribution, and pressure change of the heat exchange medium, and comprehensively analyzes the distribution state of the heat exchange medium. The infrared thermal imager enhances the safety of the testing process, can monitor the temperature rise of the key parts in real time, and can locate the failure point in three dimensions in combination with the ultrasonic liquid level sensor. The control system can be a remote intelligent monitoring system: a PLC is used as a central controller for remote operation and monitoring.

[0089] Specifically, the process is as follows: first, the system initialization stage: turn on the control system, and the control system first performs self-checking to ensure that all devices, such as the adjusting mechanism 12, the liquid level sensor 14, and the temperature detector 15, are operating normally. Initialize the adjusting mechanism 12 to adjust the carrier table 11 to the initial position, which can be a horizontal state; initialize the liquid level sensor 14 to clear the liquid level data and set the liquid level change rate as the alarm trigger condition; initialize the temperature detector 15 to set the detection parameters such as temperature range, frame rate, etc., and set the temperature threshold, such as triggering an alarm when the temperature exceeds 50°C; initialize the computational fluid dynamics software to load the three-dimensional model of the battery device 13 and test parameters such as the inclination angle and the heat exchange medium injection rate. Second, the testing stage: control the adjusting mechanism 12 to act through the control system to adjust the carrier table 11 and the battery device 13 to the preset position, and then inject the heat exchange medium into the battery device 13 at a set rate, which can be controlled by the control system. At the same time, the liquid level sensor 14 monitors the liquid level and flow path in real time and transmits the data to the control system, which records the real-time liquid level, temperature distribution (temperature signals are transmitted to the control system through the temperature detector 15), etc. Third, the simulation stage: the control system transmits the real-time data and possible leakage point information to the computational fluid dynamics software, which simulates the path and diffusion of the heat exchange medium flowing out of the leakage point, predicts the leakage risk, and outputs a three-dimensional visual report. The simulation results are fed back to the control system and can be used to optimize the test parameters or adjust the action of the adjusting mechanism 12.

[0090] The liquid level sensor 14 is used in conjunction with the computational fluid dynamics software in this embodiment, wherein the ultrasonic liquid level sensor is a non-contact measurement device that calculates the distance from the liquid surface to the sensor by emitting high-frequency sound wave pulses and measuring the time taken for the sound waves to return after being reflected off the liquid surface, and then obtains the liquid level height. Specifically, the ultrasonic sensor emits high-frequency sound wave pulses (usually with a frequency of tens of kilohertz to several megahertz) through an internal piezoelectric transducer, and these sound waves propagate in the form of spherical waves. When the sound waves encounter the liquid surface, part of the sound waves is reflected back. The intensity of the reflected waves depends on the flatness of the liquid surface and the acoustic impedance characteristics. The piezoelectric transducer inside the sensor also acts as a receiver, receiving the reflected sound wave signals. The sensor measures the time taken for the sound waves to travel from emission to reflection (i.e. the round-trip time of the sound waves), and calculates the liquid level height.

[0091] The ultrasonic liquid level sensor is used in conjunction with the computational fluid dynamics software. The basic calculation process of the computational fluid dynamics software is as follows: software model establishment: import the structure model of the battery device 13 and establish a three-dimensional flow field model; boundary condition setting: set the injection rate of the heat exchange medium, the inclination angle of the battery device 13, etc.; real-time data acquisition: during the test process, the ultrasonic liquid level sensor collects real-time data such as the liquid level height and flow path of the heat exchange medium, and the data acquisition system synchronously records and transmits the data to the software; fluid dynamics simulation: the software dynamically simulates the flow process of the heat exchange medium based on the real-time data and the pre-established three-dimensional model, and generates a flow path diagram and a submergence height change diagram of the heat exchange medium; three-dimensional visualization output: the software displays the analysis results in the form of a three-dimensional solid model, which intuitively reflects the flow path of the cooling liquid and possible leakage points.

[0092] In addition, in order to better monitor the temperature rise of the heat exchange medium injected into the battery device 13, a temperature probe 15, which can be an infrared thermal imager, is introduced into the device. The temperature probe 15 is used in conjunction with the liquid level sensor 14 to assist in identifying the leakage path and potential risk points.

[0093] The effect of this embodiment is to improve the accuracy of the heat exchange medium leakage test inside the battery device 13.

[0094] In some embodiments, referring to Figure 1 , In some embodiments, referring to Figure 2 , the adjusting mechanism 12 includes a base 121 and a telescopic mechanism 122, the telescopic mechanism 122 is electrically connected to the control system, the telescopic mechanism 122 has a first end and a second end oppositely arranged along the telescopic direction of the telescopic mechanism 122, the first end is connected to the base 121, and the second end is connected to the carrying table 11.

[0095] Specifically, the base 121 is used to install the telescopic mechanism 122. One end of the telescopic mechanism 122 is connected to the base 121, and the other end is connected to the support platform 11. Under the control of the control system, the telescopic mechanism 122 can extend and retract, thereby pushing the support platform 11 to rotate, thus realizing the adjustment of its tilt angle.

[0096] The telescopic mechanism 122 can be a telescopic arm or a cylinder or other components, and can be controlled by a control system.

[0097] The advantage of this embodiment is that the structure is simple and easy to operate. By setting the telescopic mechanism 122, the angle of the support platform 11 can be adjusted by pushing the telescopic mechanism 122. Specifically, the support platform 11 can be connected to at least two telescopic mechanisms 122. Some telescopic mechanisms 122 are stationary, while others are pushed. The platform can then rotate with the connection point of the stationary telescopic mechanism 122 as the fulcrum.

[0098] In some embodiments, please refer to Figure 1 , Figure 2 The adjustment mechanism 12 also includes a first universal joint 123 and a second universal joint 124. The first universal joint 123 is used to connect the first end and the base 121, and the second universal joint 124 is used to connect the second end and the support platform 11.

[0099] Specifically, the first and second ends of the telescopic mechanism 122 are connected to the base 121 and the support platform 11 via universal joints, respectively. The universal joint may include a universal ball and a matching structure. The matching structure may be a cylindrical structure that accommodates the universal ball, with the universal ball located inside the cylinder and partially exposed, allowing it to rotate freely. The number of universal balls in the universal joint can be set multiple as needed for easy adjustment.

[0100] The advantage of this embodiment is that, during the process of the telescopic mechanism 122 pushing the support platform 11 through telescopic movement, the adjustment range can be increased by adjusting the universal joint, allowing the support platform 11 to freely adjust its tilt angle, reducing structural limitations and increasing the flexibility of adjustment.

[0101] In some embodiments, please refer to Figure 1 , Figure 2 The adjustment mechanism 12 includes at least three telescopic mechanisms 122, which are arranged circumferentially along the support platform 11.

[0102] Specifically, at least three telescopic mechanisms 122 are arranged between the base 121 and the bearing table 11, i.e., the three telescopic mechanisms 122 are used to support the bearing table 11, and the three telescopic mechanisms 122 can determine their telescopic ranges under the control of the control system, thereby increasing the adjustable angle range of the bearing table 11 and the number of adjustable postures of the battery device 13, and the three telescopic mechanisms 122 are also arranged along the circumferential direction of the bearing table 11, and the telescopic mechanisms 122 are used to push the bearing table 11 at different positions, thereby further increasing the adjustment range.

[0103] In some embodiments, referring to Figure 1 , Figure 2 , the at least three telescopic mechanisms 122 are connected to the circumferential edge of the bearing table 11 and arranged along the circumferential direction of the bearing table 11.

[0104] Specifically, the at least three telescopic mechanisms 122 are connected to the circumferential edge of the bearing table 11, i.e., the edge of the bearing table 11, and the at least three telescopic mechanisms 122 connected to the edge of the bearing table 11 are also arranged along the circumferential direction of the bearing table 11, thereby further increasing the adjustment range of the bearing table 11 and the number of adjustable postures of the battery device 13.

[0105] In some embodiments, referring to Figure 1 , Figure 2 , the number of telescopic mechanisms 122 is six. Specifically, the six telescopic mechanisms 122 are connected to the circumferential edge of the bearing table 11 and arranged along the circumferential direction. The adjustment mechanism 12 can adjust the position of the bearing table 11 in six degrees of freedom.

[0106] The six degrees of freedom can be that the adjustment mechanism 12 can adjust the position of the bearing table 11 in three directions, and the three directions are perpendicular to each other, and the adjustment mechanism 12 is also used to rotate the bearing table 11 around a first axis, a second axis and a third axis, and the three axes are perpendicular to each other.

[0107] The effect of the embodiment is that the bearing table 11 can be moved to any position in the adjustable space range, and can also rotate around three perpendicular axes, thereby achieving all-around adjustment of the posture of the battery device 13.

[0108] In some embodiments, referring to Figure 1 , the battery testing device further comprises a rack 16, the rack 16 comprises a first rack body 162, a second rack body 163 and a plurality of support rods 161, the first rack body 162 and the second rack body 163 are arranged along a first direction, and the plurality of support rods 161 are used to connect the first rack body 162 and the second rack body 163, the rack 1 is installed on the first rack body 162, and the liquid level sensor 14 is installed on the second rack body 163 and arranged opposite to the bearing table 11.

[0109] Specifically, the first frame body 162 is used to support the gantry 1, i.e., the gantry 1 can be placed on the first frame body 162, the first direction can be a vertical direction, the second frame body 163 can be located above the first frame body 162, specifically, above the bearing table 11, and the liquid level sensor 14 can be installed on the second frame body 163, at this time, the liquid level sensor 14 is located above the battery device 13, which is convenient for downward detection of the battery device 13. The support rod 161 is connected to the first frame body 162 and the second frame body 163, so that the first frame body 162 and the second frame body 163 form an integral structure.

[0110] The first frame body 162 can be a plate-shaped member connected to the support rod 161, and the second frame body 163 can be a plurality of frame rods connected to the support rod 161.

[0111] The effect of the embodiment is that the first frame body 162 and the second frame body 163 are respectively arranged to place the gantry 1 and the liquid level sensor 14, which positions the gantry 1 and realizes the arrangement of the liquid level sensor 14, and facilitates the detection of the battery device 13 on the bearing table 11 of the gantry 1 by the liquid level sensor 14. The support rod 161 plays a connecting role, so that the first frame body 162 and the second frame body 163 can be moved simultaneously, thereby driving the gantry 1 and the liquid level sensor 14 to move simultaneously.

[0112] In some embodiments, referring to Figure 1 , Figure 2 The rack 16 further comprises a mounting beam 17 mounted on the second frame body 163 and movable reciprocally along a second direction, and the liquid level sensor 14 is mounted on the second frame body 163 through the mounting beam 17, and the second direction is perpendicular to the first direction.

[0113] Specifically, the mounting beam 17 is arranged on the second frame body 163 and is a movable beam body, i.e., a beam body with adjustable position, and the mounting beam 17 is arranged by sliding relative to the second frame body 163, so as to realize the adjustment of the position in the second direction. After adjustment, it can be positioned. Since the liquid level sensor 14 is mounted on the second frame body 163 through the mounting beam 17, the liquid level sensor 14 can also move along the second direction, and the second direction is perpendicular to the first direction. The first direction can be a vertical direction, and the second direction can be a horizontal direction. The liquid level sensor 14 is mounted on the mounting beam 17, and the mounting beam 17 is slidingly mounted on the second frame body 163.

[0114] The mounting beam 17 can be slidingly connected with the frame rods of the second frame body 163, a strip-shaped protruding track extending along the length direction of the frame rod is arranged on the frame rod, a slot-shaped structure adapted to the track is arranged on the mounting beam 17, and the two are adapted and connected so as to be slidable.

[0115] The effect of this embodiment is that the position of the liquid level sensor 14 can be adjusted in the second direction, thereby increasing the detection range of the battery device 13 and enabling all-round detection of the heat exchange medium of the battery device 13, so as to increase the accuracy of detection.

[0116] In some embodiments, please refer to Figure 1 , Figure 3 The frame 16 also includes a first mounting member 18, which is mounted on the mounting beam 17 and can reciprocate along a third direction. The liquid level sensor 14 is mounted on the mounting beam 17 via the first mounting member 18, and the third direction is perpendicular to the first direction and the second direction.

[0117] Specifically, in this embodiment, the liquid level sensor 14 is not directly mounted on the mounting beam 17, but is connected to the first mounting component 18 through the first mounting component 18, and the first mounting component 18 is then connected to the mounting beam 17.

[0118] The first mounting component 18 is slidably mounted on the mounting beam 17 and can move along a third direction. After adjustment, it can be positioned. The third direction can be the length direction of the mounting beam 17. The third direction is perpendicular to the second and first directions. The third direction can also be horizontal.

[0119] The first mounting component 18 may include a sliding sleeve 181 and a fixed base 182. The sliding sleeve 181 is slidably mounted on the mounting beam 17; the fixed base 182 is connected to the sliding sleeve 181 via a universal ball joint, and the liquid level sensor 14 is connected to the fixed base 182.

[0120] The first mounting component 18 includes a sliding sleeve 181 and a fixed seat 182. The sliding sleeve 181 is a sleeve structure with a sleeve hole. The cross-section of the sleeve hole is the same as the cross-section of the mounting beam 17. The mounting beam 17 is inserted into the sleeve hole of the sliding sleeve 181, and the two are slidably arranged relative to each other, thereby driving the fixed seat 182 to move, and in turn driving the liquid level sensor 14 to move.

[0121] The liquid level sensor 14 can be fixedly connected to the fixed base 182, while the fixed base 182 and the sliding sleeve 181 can be connected by a universal ball joint to adjust the orientation of the liquid level sensor 14.

[0122] The movement of the sliding sleeve 181 relative to the mounting beam 17 can be achieved by pushing it with a cylinder, or by using a screw mechanism in conjunction with a motor. For example, the motor power output drives the screw to rotate, and the screw nut drives the sliding sleeve 181 to move. The cylinder and motor can be controlled by the control system.

[0123] The effect of this embodiment is that it further increases the detection range of the liquid level sensor 14 on the battery device 13.

[0124] In some embodiments, referring to Figure 1 , Figure 3 , the liquid level sensor 14 is rotatably mounted on the first mounting member 18.

[0125] Specifically, the liquid level sensor 14 can be connected on the first mounting member 18 through a universal ball, a universal joint or a shaft body to adjust the orientation of the liquid level sensor 14, to realize the rotation of the liquid level sensor 14 relative to the first mounting member 18 and increase the detection range.

[0126] In some embodiments, referring to Figure 1 , Figure 4 , the temperature detector 15 is mounted on the support rod 161.

[0127] The temperature detector 15 can be an infrared imager for detecting the surface temperature of the battery device 13, so it can be arranged on the support rod 161 so that it can be kept at approximately the same height as the battery device 13, thereby facilitating temperature detection.

[0128] In some embodiments, referring to Figure 1 , Figure 4 , the rack 16 further comprises a second mounting member 19, the second mounting member 19 is mounted on the support rod 161 and can reciprocate along the first direction, and the temperature detector 15 is mounted on the support rod 161 through the second mounting member 19.

[0129] Specifically, the second mounting member 19 can move relative to the support rod 161, thereby adjusting the position of the temperature detector 15 in the first direction so that it can detect the temperature of the battery device 13 at a suitable position. After the position is adjusted, it can be positioned.

[0130] The second mounting member 19 can comprise a moving seat 191, a connecting plate 192 and a locking member 193.

[0131] The moving seat 191 is slidingly connected to the support rod 161, the moving seat 191 is provided with a mounting hole, the temperature detector 15 is connected to a plug-in rod 24, and the plug-in rod 24 is rotatably arranged in the mounting hole; the connecting plate 192 is connected to the moving seat 191, and the connecting plate 192 is provided with a connecting hole; the locking member 193 is plug-in connected to the connecting hole, and the plug-in end is used to push the support rod 161 to fix the moving seat 191.

[0132] Specifically, the moving base 191 is slidingly connected with the support rod 161, and a sliding rod can be arranged on the support rod 161, and a sliding hole is arranged on the moving base 191, the sliding rod passes through the sliding hole to achieve the relative sliding arrangement of the two, and the mounting hole is used for mounting the insertion rod 24, the insertion rod 24 is rotationally inserted into the mounting hole, the insertion rod 24 can rotate, and the temperature detector 15 can be rotated when the insertion rod 24 rotates, so that the orientation of the temperature detector 15 is adjusted, and the insertion rod 24 can be a vertically arranged rod body, that is, the rotation axis of the insertion rod 24 is vertical. The position of the moving base 191 can be adjusted in advance, and after being adjusted in place, the moving base 191 is fixed by means of the connecting plate 192, the connecting plate 192 connects the moving base 191, and the connecting plate 192 also extends to a position opposite to the support rod 161, a connecting hole is arranged at the position, the locking piece 193 is inserted into the connecting hole, and the support rod 161 is pushed and abutted by the insertion end to achieve the fixation of the connecting plate 192 and the moving base 191 relative to the support rod 161.

[0133] The locking piece 193 can be a screw rod, the screw rod can be provided with a screw cap, the screw cap can be a key-shaped screw cap, and the connecting hole can be an internally threaded hole.

[0134] The embodiment has the effect that the arrangement form of the temperature detector 15 is provided, the structure is simple and easy to operate, and the position adjustment of the temperature detector 15 in the first direction is achieved to comprehensively detect the surface temperature of the battery device 13.

[0135] In some embodiments, referring to Figure 1 , the rack 16 further comprises a plurality of moving wheels, and the plurality of moving wheels are arranged at one ends of the plurality of support rods 161 away from the second rack body 163.

[0136] The embodiment provides the moving wheels, the support rods 161 can be vertically arranged, and the number of the support rods 161 can be four, that is, four vertical rods supporting the ground, and the moving wheels are arranged at the bottom of the support rods 161, and the whole device can walk by means of the moving wheels, so that the overall position adjustment is facilitated.

[0137] In some embodiments, referring to Figure 1 , Figure 5 , the bearing table 11 is provided with a limiting structure, and the limiting structure is used for limiting the position of the battery device 13.

[0138] The embodiment provides the limiting structure, so that the battery device 13 can be kept stable relative to the bearing table 11 when the posture is adjusted, and the risk of falling off is reduced.

[0139] In some embodiments, referring to Figure 1 and Figure 5 , the limiting structure comprises a limiting groove 20 concavely arranged on the bearing table 11, and the limiting groove 20 is used for accommodating at least part of the battery device 13.

[0140] Specifically, the upper side of the bearing table 11 is used to set the battery device 13, which can include a box with battery monomers and the like inside. The battery device 13 needs to be fixed with the bearing table 11 to prevent relative movement between the two when adjusting the position.

[0141] The embodiment provides the limiting groove 20 arranged on the bearing table 11. The limiting groove 20 is a groove structure arranged on the surface of the bearing table 11 and has a certain depth. The limiting groove 20 can accommodate the battery device 13. The groove wall of the limiting groove 20 has a certain limiting effect on the battery device 13, so that the bearing table 11 can prevent the battery device 13 from falling off from the bearing table 11 when driving the battery device 13 to change the position.

[0142] In some embodiments, referring to Figure 5 and Figure 6 , the limiting structure further includes an elastic component 21 arranged on the groove side wall of the limiting groove 20 and used to extrude the battery device 13.

[0143] Specifically, the battery device 13 is arranged in the limiting groove 20. The elastic component 21 is arranged in the limiting groove 20. The elastic component 21 can be arranged on the side wall of the limiting groove 20. The elastic component 21 extrudes the battery device 13, that is, the elastic component 21 is arranged between the battery device 13 and the side wall of the limiting groove 20 and has extrusion force on the battery device 13. The elastic component 21 can be arranged on at least two opposite side walls of the limiting groove 20, so as to form a clamping form on the battery device 13.

[0144] The embodiment provides the elastic component 21 used to contact the battery device 13 and stabilize the position of the battery device 13. The stability of the battery device 13 during adjustment with the bearing table 11 can be increased, and the relative movement between the two can be reduced, thereby facilitating the monitoring of the heat exchange medium.

[0145] In some embodiments, referring to Figure 5 and Figure 6 , the elastic component 21 includes a mounting plate 211 and an elastic sheet 212.

[0146] The mounting plate 211 is arranged on the side wall of the limiting groove 20. The elastic sheet 212 is arranged on the side of the mounting plate 211 facing the battery device 13, and the elastic sheet 212 is extruded between the mounting plate 211 and the battery device 13.

[0147] Specifically, the elastic sheet 212 is a sheet structure with elasticity, which can be a metal sheet, a plastic sheet or a resin sheet. The mounting plate 211 provides a mounting position for the elastic sheet 212. The mounting plate 211 is a plate structure arranged on the groove wall. The elastic sheet 212 is arranged on the side of the mounting plate 211 facing the battery device 13.

[0148] The embodiment provides a specific form of the elastic component 21, the elastic sheet 212 has elasticity, and the mounting plate 211 provides a mounting position, so that the battery device 13 is resisted, and the elastic sheet 212 does not have hard contact with the battery device 13 when the elastic sheet 212 is resisted due to the elasticity of the elastic sheet 212.

[0149] In some embodiments, referring to Figure 5 and Figure 6 , the mounting plate 211 is provided with a plurality of lock connection portions 22 arranged at intervals, and the two ends of the elastic sheet 212 are connected to any lock connection portion 22 respectively, so that the elastic sheet 212 forms an arc surface.

[0150] Specifically, the elastic sheet 212 is mounted on the mounting plate 211, and when the elastic sheet 212 is pressed into an arc surface, the elastic sheet 212 can better play the elastic resistance effect, the two ends of the elastic sheet 212 are respectively locked at the two lock connection portions 22, the distance between the two lock connection portions 22 is less than the distance between the two ends of the elastic sheet 212, so that when the elastic sheet 212 is locked, the elastic sheet 212 is pressed into an arc surface, and the outer arc surface of the side, away from the mounting plate 211, can be used to resist the battery device 13.

[0151] And since the lock connection portions 22 are arranged at intervals, the two ends of the elastic sheet 212 can be selectively connected to two lock connection portions 22 with different intervals, so that the bending degree of the elastic sheet 212, that is, the elasticity of the elastic sheet 212, can be adjusted, and the battery device 13 with different sizes can also be matched, and when the battery device 13 is larger, the bending degree of the elastic sheet 212 can be reduced to avoid the battery device 13.

[0152] The effect of the embodiment is that the elastic sheet 212 is pressed into an arc surface, the elasticity is increased, the battery device 13 can be better pressed, and the contact area between the battery device 13 and the elastic sheet 212 is also increased when the battery device 13 is pressed by the arc surface, so that the stability of the battery device 13 is increased.

[0153] In some embodiments, referring to Figure 5 and Figure 6 , the lock connection portion 22 comprises a lock connection ring fixed to the mounting plate 211, the elastic sheet 212 is provided with a plug hole aligned with the lock connection ring, and the lock connection ring and the plug hole are used for simultaneously inserting the lock connection rod 25 to lock the elastic sheet 212.

[0154] Specifically, the lock connection ring is in a ring structure and is fixed to the mounting plate 211, the elastic sheet 212 is provided with a plug hole and is aligned with the lock connection ring, and the plug hole is inserted into the lock connection rod 25, so that the elastic sheet 212 is locked. The lock connection form is simple and reliable, and the effect is more direct.

[0155] In some embodiments, referring to Figure 5 and Figure 6The side of the mounting plate 211 facing away from the battery device 13 is provided with a pushing element 23 for driving the mounting plate 211 to move close to or away from the battery device 13, the pushing element 23 penetrating through the slot side wall of the limiting slot 20 and protruding out of the limiting slot 20.

[0156] Specifically, the size of the battery device 13 is different, and the position of the mounting plate 211 can be adjusted, when the battery device 13 is small, the mounting plate 211 is pushed to move close to the battery device 13, so as to ensure that the battery device 13 can be squeezed, and the squeezing degree can also be adjusted. The pushing element 23 can be a pushing rod, and the exposed end of the pushing rod can be connected with a cylinder or other devices after penetrating through the slot wall, so as to push.

[0157] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery testing device, characterized in that, include: A platform, comprising a support platform and an adjustment mechanism, wherein the support platform is used to support a battery device, and the adjustment mechanism is connected to the support platform and is used to adjust the tilt angle of the support platform; A liquid level sensor is used to detect the liquid level position and flow path of the heat exchange medium within the battery device. A temperature detector, the temperature detector being used to detect the surface temperature of the battery device; and The control system is electrically connected to the liquid level sensor and the temperature detector to receive detection data from the liquid level sensor and the temperature detector, and the control system is also electrically connected to the regulating mechanism to control the operation of the regulating mechanism.

2. The battery testing apparatus as described in claim 1, characterized in that, The adjustment mechanism includes a base and a telescopic mechanism. The telescopic mechanism is electrically connected to the control system. The telescopic mechanism has a first end and a second end that are arranged opposite to each other along the telescopic direction of the telescopic mechanism. The first end is connected to the base, and the second end is connected to the support platform.

3. The battery testing apparatus as described in claim 2, characterized in that, The adjustment mechanism further includes a first universal joint and a second universal joint. The first universal joint is used to connect the first end and the base, and the second universal joint is used to connect the second end and the support platform.

4. The battery testing apparatus as described in claim 3, characterized in that, The adjustment mechanism includes at least three telescopic mechanisms, which are arranged circumferentially along the support platform.

5. The battery testing apparatus as described in claim 4, characterized in that, At least three of the telescopic mechanisms are connected to the periphery of the support platform and are arranged separately along the circumference of the support platform.

6. The battery testing apparatus as described in claim 4, characterized in that, The number of telescopic mechanisms is six.

7. The battery testing apparatus according to any one of claims 1-6, characterized in that, The battery testing device also includes a frame, which includes a first frame, a second frame, and multiple support rods. The first frame and the second frame are separated along a first direction. The multiple support rods are used to connect the first frame and the second frame. The platform is mounted on the first frame, and the liquid level sensor is mounted on the second frame and is positioned opposite to the support platform.

8. The battery testing apparatus as described in claim 7, characterized in that, The frame also includes a mounting beam, which is mounted on the second frame and can reciprocate along a second direction. The liquid level sensor is mounted on the second frame via the mounting beam, and the second direction is perpendicular to the first direction.

9. The battery testing apparatus as described in claim 8, characterized in that, The frame also includes a first mounting component, which is mounted on the mounting beam and can reciprocate along a third direction. The liquid level sensor is mounted on the mounting beam via the first mounting component, and the third direction is perpendicular to the first direction and the second direction.

10. The battery testing apparatus as described in claim 9, characterized in that, The liquid level sensor is rotatably mounted on the first mounting component.

11. The battery testing apparatus as described in claim 7, characterized in that, The temperature detector is mounted on the support rod.

12. The battery testing apparatus as described in claim 11, characterized in that, The frame also includes a second mounting component, which is mounted on the support rod and can reciprocate along the first direction. The temperature detector is mounted on the support rod via the second mounting component.

13. The battery testing apparatus as described in claim 7, characterized in that, The frame also includes multiple casters, which are respectively disposed at the ends of the multiple support rods away from the second frame.

14. The battery testing apparatus according to any one of claims 1-6, characterized in that, The support platform is provided with a limiting structure, which is used to restrict the position of the battery device.

15. The battery testing apparatus as described in claim 14, characterized in that, The limiting structure includes a limiting groove recessed in the support platform, the limiting groove being used to accommodate at least a portion of the battery device.

16. The battery testing apparatus as described in claim 15, characterized in that, The limiting structure also includes an elastic component, which is disposed on the side wall of the limiting groove and is used to compress the battery device.

17. The battery testing apparatus as described in claim 16, characterized in that, The elastic component includes: A mounting plate is disposed on the side wall of the limiting groove; and A spring clip is provided on the side of the mounting plate facing the battery device, and the spring clip is pressed between the mounting plate and the battery device.

18. The battery testing apparatus as described in claim 17, characterized in that, The mounting plate is provided with multiple locking parts spaced apart, and the two ends of the spring are respectively connected to any of the locking parts to make the spring form an arc shape.

19. The battery testing apparatus as described in claim 18, characterized in that, The locking part includes a locking ring fixed to the mounting plate, and the spring piece is provided with a plug hole aligned with the locking ring. The locking ring and the plug hole are used to simultaneously insert a locking rod to lock the spring piece.

20. The battery testing apparatus as described in claim 17, characterized in that, The mounting plate has a pusher on the side facing away from the battery device. The pusher is used to drive the mounting plate closer to or away from the battery device. The pusher passes through the side wall of the limiting groove and protrudes outside the limiting groove.

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