CN218239613U - Test device for simulating battery expansion and extrusion of battery pack trays - Google Patents

Abstract

The application provides a test device for simulating battery expansion and squeezing the battery pack tray, including a fixture for fixing the battery pack tray; a telescopic component for performing telescopic movement to squeeze the battery pack tray; The component is electrically connected to obtain the pressure data applied by the telescopic component to the battery pack tray; the control part is electrically connected to the telescopic component and the measuring part, and is used to control the telescopic component to perform telescopic movement and receive the pressure data transmitted by the measuring part. The test device satisfies the above structure, which is beneficial to realize the evaluation of the impact of the expansion force on the structure of the battery pack.

Description

Test device for simulating battery expansion and extrusion of battery pack trays

technical field

The present application relates to the technical field of battery expansion testing, in particular to a testing device for simulating battery expansion and extrusion of battery pack trays.

Background technique

During the charge-discharge cycle, the battery pack will gradually expand to generate expansion force. The expansion force of the battery pack has an important impact on the capacity attenuation and structural strength of the battery pack. Performances such as safety and capacity retention are of great significance.

At present, the research on the expansion force of the battery pack is mostly concentrated on the level of the monomer and the module. By putting the relevant battery pack into the corresponding test fixture, the battery pack is clamped by a steel plate with high rigidity, and the disc force sensor is against the steel plate. When the battery expands, it will drive the steel plate to exert pressure on the disc force sensor, and then obtain the value of the expansion force. However, this type of method can only obtain the magnitude of the expansion force, and cannot evaluate the impact of the expansion force on the structure of the battery pack.

Utility model content

The purpose of this application is to provide a test device for simulating battery expansion and squeezing the battery pack tray, so as to solve the problem that the research on the expansion force of the battery pack cannot evaluate the impact of the expansion force on the structure of the battery pack.

For realizing the purpose of the application, the application provides the following technical solutions:

The present application provides a test device for simulating battery expansion and squeezing the battery pack tray, including: a fixture for fixing the battery pack tray; a telescopic component for performing telescopic movement to squeeze the battery pack tray; a measuring piece , connected to the telescopic assembly, used to obtain pressure data applied by the telescopic assembly to the battery pack tray; a control member, electrically connected to the telescopic assembly and the measuring member, used to control the telescopic assembly to perform telescopic movement, and receive the pressure data transmitted by the measuring piece.

In one embodiment, the telescopic assembly includes a telescopic element and a power element, the telescopic element is used for telescopic movement, the power element is connected with the telescopic element, and the power element is used to provide the telescopic element Power, the control part is electrically connected with the power part.

In one embodiment, the test device further includes a temperature sensor and a cooling element, both of the temperature sensor and the cooling element are electrically connected to the control element, and the temperature sensor is used to detect the temperature of the power element and the cooling element. The temperature of the expansion element, the cooling element is used to maintain the working temperature of the power element and the expansion element.

In one embodiment, there are a plurality of telescopic members, and the plurality of telescopic members are arranged at intervals to squeeze different positions of the battery pack tray.

In one embodiment, the battery pack tray includes a peripheral beam and a cross beam connecting two opposite side beams, a plurality of the telescopic members are provided on the first side of the cross beam, and a plurality of telescopic members are provided on the first side. The telescopic elements perform telescopic movement synchronously.

In one embodiment, a single power element is connected to multiple telescopic elements.

In one embodiment, the telescopic member is a hydraulic cylinder, and the power member is connected to the hydraulic cylinder through a hydraulic pipe, and the hydraulic pipe is used to transport hydraulic oil.

In one embodiment, the testing device further includes a displacement sensor, the displacement sensor is electrically connected to the control member, and the displacement sensor is used to detect the expansion displacement of the battery pack tray.

In one embodiment, the clamp includes a bottom plate and a package body clamp, the battery pack tray and the package body clamp are both connected to the bottom plate, and the package body clamp and the battery pack tray are facing away from the telescopic One side of the component fits.

In one embodiment, the test device further includes a terminal, the terminal is electrically connected to the control part, and is used for receiving and analyzing the pressure data transmitted by the control part.

In the test device for simulating battery expansion and squeezing the battery pack tray provided by this application, the battery pack tray is fixed on the fixture, and the telescopic component performs telescopic movement to squeeze the battery pack tray to simulate the expansion force generated during the expansion process of the battery pack. And the expansion force squeezes the battery pack tray; by connecting the measuring piece with the telescopic assembly, the measuring piece is used to obtain the pressure data applied by the telescopic assembly to the battery pack tray, which is beneficial to obtain the expansion force of the battery pack tray through the measuring piece. Size; making the control part electrically connected with the telescopic component and the measuring part is beneficial to control the telescopic movement of the telescopic component through the control part, so that the telescopic component can more reasonably simulate the effect of the expansion of the battery pack. At the same time, the control part is also used to receive the measuring part The transmitted pressure data is used as the evaluation data of the impact of the expansion force on the structure of the battery pack, thereby solving the problem that the research on the expansion force of the battery pack cannot evaluate the impact of the expansion force on the structure of the battery pack.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some implementations of the present application. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic structural view of a testing device in an embodiment;

Fig. 2 is a system schematic diagram of a testing device in an embodiment.

Explanation of reference signs:

1-fixture, 2-telescopic assembly, 3-battery pack tray;

11-Bottom plate, 12-Inclusion fixture, 21-Expandable parts, 22-Power parts, 23-Hydraulic pipes, 31-Side beams, 32-Beams;

40-terminal, 41-control part, 42-measurement part, 43-temperature sensor, 44-cooling part, 45-displacement sensor, 46-speed sensor.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the accompanying drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time.

Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used in the description in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Some implementations of the present application will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

The embodiment of the present application provides a test device for simulating the expansion and extrusion of the battery pack tray, please refer to Figure 1 and Figure 2, the test device includes: a clamp 1, a telescopic assembly 2, a measuring part 42 and a control part 41, wherein, The clamp 1 is used as a fixed structure to fix the battery pack tray 3; the telescopic assembly 2 is used to perform telescopic movement to squeeze the battery pack tray 3 to simulate the expansion force generated during the expansion process of the battery pack, and the expansion force has an impact on the battery pack. The tray 3 is squeezed; the measuring part 42 is connected with the telescopic assembly 2 to obtain the pressure data applied by the telescopic assembly 2 to the battery pack tray 3; the control part 41 is electrically connected with the telescopic assembly 2 and the measuring part 42 for controlling the telescopic assembly 2 to perform telescopic movement, and receive the pressure data transmitted by the measuring piece 42.

Optionally, the fixture 1 includes a flat plate, which is a rigid material, and is fixed on the ground. The battery pack tray 3 is connected and fixed to the flat plate. At the same time, the battery pack tray 3 encloses a closed area, and the telescopic assembly 2 is arranged on the closed area. In the area, both ends of the telescopic assembly 2 are connected to the battery pack tray 3. When the telescopic assembly 2 performs telescopic movement, the battery pack tray 3 is squeezed to different degrees, and the direction of extrusion is from the inside of the closed area to the outside of the closed area. And make the battery pack tray 3 be subjected to the pressure generated by extrusion, and then simulate the expansion force of the battery pack tray 3 during the expansion process of the battery pack.

Preferably, the battery pack tray 3 includes four side panels, and the four side panels together enclose a rectangular closed area, the two ends of the telescopic assembly 2 are respectively connected to two parallel side panels, and the telescopic assembly 2 is located in the closed area center of.

Optionally, the test device is also provided with a rigid plate, the rigid plate is bonded to the battery pack tray 3, the telescopic component 2 is connected to the rigid plate, and the telescopic component 2 squeezes the rigid plate during telescopic movement, and the rigid plate is squeezed and then squeezed. Press the battery pack tray 3. Specifically, the rigid plate is made of steel with high hardness, and each side of the battery pack tray 3 is attached with a rigid plate. When the telescopic assembly 2 squeezes the rigid plate, the pressure generated by it is After the rigid plate is dispersed, it is squeezed to the battery pack tray 3 with a larger action area, which is beneficial to avoid the direct extrusion of the telescopic component 2 to the battery pack tray 3, resulting in excessive pressure on some areas of the battery pack tray 3, causing the battery pack tray to 3. Deformation or damage, the effect of battery pack expansion cannot be simulated well.

When a rigid plate is used to fit the battery pack tray 3, the same rigid plate can be connected to multiple telescopic assemblies 2. Optionally, multiple telescopic assemblies 2 are arranged at intervals, and the multiple telescopic assemblies 2 are parallel and at the same distance; The multiple telescopic components 2 on the rigid board perform telescopic movement synchronously, so as to avoid deformation of the rigid plate caused by uneven force on the multiple telescopic components 2 due to poor synchronization.

Optionally, each side of the battery pack tray 3 is bonded with a continuous whole rigid plate, and a plurality of telescopic assemblies 2 are arranged at intervals on the whole rigid plate, or, the battery pack tray 3 is bonded with a plurality of discontinuous rigid plates. board, a single rigid board is connected with a single telescopic assembly 2, or the rigid board includes an edge rigid board attached to the battery pack tray 3 and a central rigid board separating the closed area, the central rigid board is parallel to the edge rigid board, and the telescopic assembly 2 is set On both sides of the central rigid plate, multiple telescopic assemblies 2 on the same side perform telescopic movement synchronously. The number of central rigid plates can be multiple, and telescopic assemblies 2 are provided on both sides of the multiple central rigid plates.

Optionally, the measuring part 42 is a pressure sensor, and the measuring part 42 is connected with the telescopic assembly 2 for measuring the pressure generated when the telescopic assembly 2 performs telescopic movement, so as to obtain pressure data applied by the telescopic assembly 2 to the battery pack tray 3 .

By fixing the battery pack tray 3 on the fixture 1, the telescopic assembly 2 performs telescopic movement to squeeze the battery pack tray 3, which is beneficial to simulate the expansion force generated during the expansion process of the battery pack, and the expansion force that occurs to the battery pack tray 3 Squeeze; the measuring piece 42 is connected with the telescopic assembly 2, and the pressure data applied to the battery pack tray 3 by the telescopic assembly 2 is obtained by using the measuring piece 42, which is beneficial to obtain the expansion force of the battery pack tray 3 by the measuring piece 42; The control part 41 is electrically connected with the telescopic assembly 2 and the measuring part 42, which is beneficial to control the telescopic movement of the telescopic assembly 2 through the control part 41, so that the telescopic assembly 2 can simulate the expansion of the battery pack more reasonably. The control part 41 is also used to receive The pressure data transmitted by the measuring part 42 is used as the evaluation data of the impact of the expansion force on the structure of the battery pack. At the same time, for the battery pack tray 3 of different specifications, it is only necessary to use the telescopic assembly 2 of different specifications, This makes the test device more widely applicable.

In one embodiment, please refer to FIG. 1 and FIG. 2 , the telescopic assembly 2 includes a telescopic member 21 and a power member 22, wherein the telescopic member 21 is used for telescopic movement, and the telescopic member 21 is connected with the battery pack tray 3 for The battery pack tray 3 is extruded; the power part 22 is connected with the telescopic part 21, the power part 22 is used to provide power for the telescopic part 21, the control part 41 is electrically connected with the power part 22, and the control part 41 is used to control the power part 22 to stretch The provision of power for the telescopic element 21, and then control the telescopic movement of the telescopic element 21.

Optionally, the power part 22 is electrically connected to the telescopic part 21, and the power part 22 electrically drives the telescopic part 21 to perform telescopic movement; or the power part 22 and the telescopic part 21 are connected by magnetic force, and the power part 22 magnetically drives the telescopic part 21 to perform telescopic movement; Or the power part 22 is connected to the telescopic part 21 through a pipeline, the power part 22 delivers liquid to the telescopic part 21, and the telescopic part 21 is hydraulically driven to perform telescopic movement.

Optionally, the telescopic assembly 2 includes multiple telescopic members 21, and the multiple telescopic members 21 located on the same side of the battery pack tray 3 are connected to the same power member 22, and the multiple telescopic members 21 perform telescopic movement synchronously.

By making the telescopic assembly 2 include a telescopic piece 21 and a power piece 22, the telescopic piece 21 is used for telescopic movement, the power piece 22 is connected with the telescopic piece 21, the power piece 22 is used to provide power for the telescopic piece 21, and the control piece 41 and the power piece 22 is electrically connected, so that the control member 41 can control the telescopic movement of the telescopic member 21 by controlling the power supply of the power member 22 to the telescopic member 21, which is conducive to the precise control of the pressure generated by the control member 41 on the telescopic member 21. At the same time, when the telescopic assembly 2 includes a plurality of telescopic parts 21, the power part 22 is used to connect the multiple telescopic parts 21 at the same time, and the control part 41 is connected to the power part 22, so that the control part 41 can realize the telescopic movement of the multiple telescopic parts 21 control, improve the synchronization rate of multiple telescopic elements 21, make the telescopic assembly 2 more reasonably simulate the effect of battery pack expansion, and avoid damage to the battery pack tray 3.

In one embodiment, please refer to Fig. 1 and Fig. 2, in the process of the test device simulating the expansion and extrusion of the battery pack tray 3, since the simulation involves the entire life cycle of the battery pack, the telescopic assembly 2 repeats the telescopic movement The number of times is large, and the power part 22 needs to continuously control the telescopic part 21 to perform multiple telescopic movements for a long time. During this process, the power part 22 is prone to heat, which affects the normal operation of the test device.

The test device also includes a temperature sensor 43 and a cooling part 44, the temperature sensor 43 corresponds to the power part 22 and the telescopic part 21, and is used to detect the temperature of the power part 22 and the telescopic part 21 and obtain temperature data, and the temperature sensor 43 and the control part 41 are electrically connected to each other. connection, used to transmit temperature data to the control part 41; the cooling part 44 is electrically connected to the control part 41, and the cooling part 44 is used to cool down the power part 22 and the telescopic part 21, thereby maintaining the work of the power part 22 and the telescopic part 21 Temperature, the control part 41 is provided with a rated temperature. When the temperature data transmitted by the temperature sensor 43 to the control part 41 is greater than the rated temperature, the control part 41 controls the cooling part 44 to cool down the power part 22 and the expansion part 21 until the temperature data is less than or equal to rated temperature.

By making the test device also include a temperature sensor 43 and a cooling part 44, the temperature sensor 43 and the cooling part 44 are electrically connected to the control part 41, the temperature sensor 43 is used to detect the temperature of the power part 22 and the expansion part 21, and the detected The temperature data is transmitted to the control part 41, which is beneficial to the real-time monitoring of the temperature of the power part 22 and the expansion part 21 by the control part 41; When the temperature of the expansion part 21 is too high, cool down the power part 22 and the expansion part 21 in time to maintain a good working temperature of the expansion component 2 and ensure the normal operation of the test device. Lift the test device to simulate the expansion of the battery and squeeze the battery pack tray 3 Simulation accuracy.

In one embodiment, please refer to FIG. 1 , the telescopic assembly 2 includes a plurality of telescopic members 21 arranged at intervals to compress different positions of the battery pack tray 3 .

Optionally, the telescopic assembly 2 includes a group of telescopic parts 21, a group of telescopic parts 21 includes a plurality of telescopic parts 21, and a plurality of telescopic parts 21 belonging to a group are connected to a single power part 22, and the single power part 22 synchronously drives a The multiple telescopic members 21 in the group perform telescopic movement, the multiple telescopic members 21 are connected with the battery pack tray 3 , and the multiple telescopic members 21 are evenly spaced.

Optionally, the telescopic assembly 2 includes multiple sets of telescopic elements 21, each group includes multiple telescopic elements 21, and the number of multiple telescopic elements 21 included in each group is the same, and the multiple telescopic elements 21 of the same group correspond to A single power part 22, a single power part 22 synchronously drives a plurality of telescopic parts 21 of the same group to perform telescopic movement, and a plurality of telescopic parts 21 of the same group are evenly spaced, and different groups are separated by the middle plate of the battery pack tray 3, so that Different groups are arranged in parallel, and the direction of telescopic movement is the same; when the synchronization of multiple telescopic elements 21 in the same group is poor, the control element 41 controls the power element 22 to drive the multiple telescopic elements 21 in the same group to complete a After the stretching cycle, all the stretching elements 21 are first returned to the starting point of the stretching cycle, and then the next stretching cycle is performed.

By making the telescopic member 21 a plurality, and the plurality of telescopic members 21 are arranged at intervals to squeeze different positions of the battery pack tray 3, it is beneficial to make the telescopic assembly 2 more reasonably simulate the effect of the expansion of the battery pack, and avoid multiple The telescopic members 21 are too densely divided in some areas, which excessively squeezes the battery pack tray 3 , resulting in excessive pressure on some areas of the battery pack tray 3 , which deforms or damages the battery pack tray 3 .

In one embodiment, please refer to FIG. 1 , the battery pack tray 3 includes side beams 31 around and a cross beam 32 connecting two opposite side beams 31 , a plurality of telescopic members 21 are arranged on both sides of the cross beam 32 , and the cross beam 32 A plurality of telescopic members 21 are provided on the first side of the first side, and the plurality of telescopic members 21 on the first side perform telescopic movement synchronously.

Optionally, two opposite side beams 31 that are not connected to the cross beam 32 are parallel, and the cross beam 32 is parallel to the two parallel side beams 31, and the telescopic member 21 is respectively connected to the parallel cross beam 32 and the side beam 31, and The telescopic movement direction of the telescopic element 21 is perpendicular to the crossbeam 32; the plurality of telescopic elements 21 located on both sides of the crossbeam 32 correspond to each other, are not staggered and have the same telescopic movement direction.

By making the battery pack tray 3 include peripheral beams 31 and cross beams 32 connecting two opposite side beams 31, the first side of the cross beam 32 is provided with a plurality of telescopic members 21, which is beneficial to uniformly adjust the different positions of the battery pack tray 3. Squeeze, so that multiple telescopic parts 21 on the first side perform telescopic movement synchronously, which is conducive to making the telescopic assembly 2 more reasonable to simulate the effect of battery pack expansion, and avoiding poor synchronization of multiple telescopic parts 21, resulting in battery pack Some areas of the tray 3 are under excessive pressure, which deforms or damages the battery pack tray 3 .

In one embodiment, please refer to FIG. 1 , a single power element 22 is connected to a plurality of telescopic elements 21 , and a control element 41 is electrically connected to the power element 22 to control the telescopic movement of the plurality of telescopic elements 21 . Optionally, the telescopic assembly 2 includes a plurality of power parts 22, and the multiple power parts 22 are respectively connected to a plurality of telescopic parts 21, and the multiple telescopic parts 21 connected to the same power part 22 perform telescopic movement synchronously.

By connecting the single power part 22 with multiple telescopic parts 21, it is beneficial to improve the synchronization of the multiple telescopic parts 21 connected with the single power part 22, and it is also beneficial for the control part 41 to control the telescopic movement of the multiple telescopic parts 21 , so that the telescopic assembly 2 can more reasonably simulate the effect of the battery pack expansion, avoiding poor synchronization of multiple telescopic members 21, resulting in excessive pressure on some areas of the battery pack tray 3, causing deformation or damage to the battery pack tray 3.

In one embodiment, please refer to FIG. 1 , the telescopic member 21 is a hydraulic cylinder, the power member 22 is connected to the hydraulic cylinder through a hydraulic pipe 23, and the hydraulic pipe 23 is used to deliver hydraulic oil, and the power member 22 sends hydraulic oil to the hydraulic cylinder or Recover the hydraulic oil, change the hydraulic oil pressure in the hydraulic cylinder, and then make the hydraulic cylinder perform telescopic movement.

Optionally, the telescopic assembly 2 includes a plurality of hydraulic cylinders, a single power member 22 is connected to a plurality of hydraulic pipes 23, and the plurality of hydraulic pipes 23 are respectively connected to a plurality of hydraulic cylinders, and a single power member 22 is synchronized to the hydraulic cylinders through a plurality of hydraulic pipes 23 The hydraulic oil is delivered or recovered, so that multiple hydraulic cylinders connected with the same power part 22 can perform telescopic movement synchronously.

By making the telescopic member 21 a hydraulic cylinder, the power member 22 is connected to the hydraulic cylinder through a hydraulic pipe 23, and the hydraulic pipe 23 is used to deliver hydraulic oil, which is beneficial for the power member 22 to synchronously control the telescopic movement of the hydraulic cylinder through a plurality of hydraulic pipes 23, so that The hydraulic cylinder uniformly squeezes the different positions of the battery pack tray 3, so that the telescopic assembly 2 can more reasonably simulate the effect of the battery pack expansion, and avoid the poor synchronization of multiple telescopic parts 21, resulting in partial areas of the battery pack tray 3 The battery pack tray 3 is deformed or damaged due to excessive pressure.

In one embodiment, please refer to FIG. 1 and FIG. 2 , the test device includes a measuring part 42, the measuring part 42 is electrically connected to the control part 41, and the measuring part 42 is used to obtain the pressure data applied by the telescopic assembly 2 to the battery pack tray 3, And transmit the pressure data to the control part 41, the control part 41 then obtains the size of the expansion force that the battery pack tray 3 is subjected to; the test device also includes a displacement sensor 45, the displacement sensor 45 is electrically connected to the control part 41, and the displacement sensor 45 is used to detect The expansion displacement of the battery pack tray 3 obtains displacement data, and transmits the displacement data to the control unit 41, and the control unit 41 further obtains the deformation degree of the battery pack tray 3 under different expansion forces.

By making the test device also include a displacement sensor 45, the displacement sensor 45 is electrically connected to the control part 41, and the displacement sensor 45 is used to detect the expansion displacement of the battery pack tray 3, and transmit the obtained displacement data to the control part 41, so the control part 41 Not only the pressure data on the battery pack tray 3 can be received, but also the displacement data generated by the battery pack tray 3 under pressure can be received, which is beneficial for the control part 41 to analyze the pressure data and displacement data, and analyze the impact of the expansion force on the battery pack structure. At the same time, it is also beneficial for the control member 41 to monitor the telescopic movement of the telescopic assembly 2, and to adjust it in time when the extrusion of the telescopic assembly 2 to the battery pack tray 3 is abnormal.

In one embodiment, referring to Fig. 1 and Fig. 2, the test device also includes a speed sensor 46, the speed sensor 46 is electrically connected to the control member 41, and the speed sensor 46 is used to detect the telescopic speed of the telescopic member 21 to obtain speed data, and The speed data is transmitted to the control part 41, and the control part 41 further obtains the expansion speed of the battery pack tray 3, and the influence of the expansion part 21 on the deformation degree of the battery pack tray 3 at different expansion and contraction speeds.

By making the test device also include a speed sensor 46, the speed sensor 46 is electrically connected to the control part 41, and the speed sensor 46 is used to detect the expansion and contraction speed of the telescopic part 21, obtain speed data, and transmit the speed data to the control part 41, which is beneficial to control Part 41 evaluates the impact of the expansion and contraction speed of the expansion member 21 on the pressure applied by the expansion assembly 2 to the battery pack tray 3 by analyzing the pressure data, displacement data and speed data, and the effect of the expansion and contraction speed of the expansion member 21 on the deformation degree of the battery pack tray 3 At the same time, it is also beneficial for the control member 41 to monitor the telescopic movement of the telescopic assembly 2, and to regulate it in time when the extrusion of the telescopic assembly 2 to the battery pack tray 3 is abnormal.

In one embodiment, please refer to FIG. 1 , the fixture 1 includes a bottom plate 11 and an enclosure fixture 12 , the bottom plate 11 is a rigid material, and the bottom plate 11 is fixed on the ground, and the battery pack tray 3 and the enclosure fixture 12 are both connected and fixed to the bottom plate 11 , the telescopic assembly 2 is connected to one side of the battery pack tray 3, and is pressed toward the side of the battery pack tray 3 facing away from the telescopic assembly 2 during the telescopic movement, and the pack body clamp 12 is arranged on the back of the battery pack tray 3 To one side of the telescopic assembly 2, and attached to the battery pack tray 3, optionally, each side of the battery pack tray 3 is attached with a package body clamp 12, or the side of the battery pack tray 3 provided with the telescopic assembly 2 is pasted A body clamp 12 is combined.

By making the clamp 1 include the bottom plate 11 and the package body clamp 12, the battery pack tray 3 and the package body clamp 12 are both connected to the bottom plate 11, and the package body clamp 12 is attached to the side of the battery pack tray 3 facing away from the telescopic assembly 2, which is beneficial During the telescopic movement of the telescopic assembly 2, the package body clamp 12 supports the battery pack tray 3 on the side of the battery pack tray 3 facing away from the telescopic assembly 2, so as to strengthen the connection and fixation strength between the battery pack tray 3 and the clamp 1, and prevent the battery pack from The tray 3 is tilted during the process of being squeezed by the telescopic assembly 2, which cannot better simulate the effect of the expansion of the battery pack.

In one embodiment, referring to Fig. 1 and Fig. 2, the test device also includes a terminal 40, the terminal 40 is electrically connected to the control part 41, the operator sends a control instruction to the control part 41 through the terminal 40, and the control part 41 according to the terminal 40 The control command controls the telescopic assembly 2 to perform telescopic movement to squeeze the battery pack tray 3. The measuring part 42 is used to obtain the pressure data applied by the telescopic assembly 2 to the battery pack tray 3, and then transmit the pressure data to the control part 41. The control part After receiving the pressure data, 41 transmits the pressure data to the terminal 40. After receiving the pressure data, the terminal 40 analyzes the pressure data and evaluates the impact of the expansion force on the structure of the battery pack.

Optionally, the terminal 40 is provided with a test program, and the test program can control the telescopic movement of the telescopic assembly 2 through the control member 41 to meet different test conditions.

Optionally, the terminal 40 is provided with a storage program, which is used to store various data transmitted from the control part 41 to the terminal 40 , so that operators can view and analyze the data on the terminal 40 .

Optionally, the test assembly further includes a displacement sensor 45, the displacement sensor 45 is electrically connected to the control member 41, and is used to detect the expansion displacement of the battery pack tray 3 and obtain displacement data, and the displacement sensor 45 transmits the displacement data to the control member 41, The control part 41 then transmits the displacement data to the terminal 40, and the terminal 40 obtains the degree of influence of the expansion force on the structural deformation of the battery pack according to the pressure data and displacement data; connected, the speed sensor 46 is used to detect the telescopic speed of the telescopic member 21, obtain the speed data, and transmit the speed data to the control part 41, and the control part 41 then transmits the speed data to the terminal 40, and the terminal 40 obtains the speed data according to the pressure data and the speed data. The degree of influence of the expansion and contraction speed of the expansion member 21 on the deformation of the battery pack structure; or the terminal 40 is also provided with a time module, and the terminal 40 obtains the degree of influence of the expansion force on the battery pack structure in different durations according to the pressure data and time.

By making the test device also include a terminal 40, the terminal 40 is electrically connected to the control part 41 for receiving and analyzing the pressure data transmitted by the control part 41, which is beneficial for the operator to adjust and control the terminal 40 according to different test situations, so that the terminal 40 Controlling the control member 41 enables the telescopic assembly 2 to perform different telescopic movements to meet different test conditions. At the same time, the terminal 40 is also conducive to analyzing the received pressure data and evaluating the impact of the expansion force on the structure of the battery pack.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer The orientation or positional relationship of indicators such as "is based on the orientation or positional relationship of the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or original component referred to must have a specific orientation, and must have a specific orientation. construction and operation, therefore should not be construed as limiting the application.

What is disclosed above is only a preferred embodiment of the application, and of course it cannot limit the scope of rights of the application. Those of ordinary skill in the art can understand the whole or part of the process of realizing the above embodiments, and according to the rights of the application The equivalent changes required to be made still belong to the scope covered by the present application.

Claims (10)

1. A test device for simulating battery expansion and extruding a battery pack tray, characterized in that it comprises: Clamps for fixing the battery pack tray; a telescopic component, used for telescopic movement to squeeze the battery pack tray; a measuring piece, connected to the telescopic assembly, for obtaining pressure data applied by the telescopic assembly to the battery pack tray; The control part is electrically connected with the telescoping assembly and the measuring part, and is used to control the telescoping assembly to perform telescopic movement and receive pressure data transmitted by the measuring part. 2. The test device according to claim 1, wherein the telescoping assembly comprises a telescopic element and a power element, the telescopic element is used for telescopic movement, the power element is connected with the telescopic element, the The power part is used to provide power for the expansion part, and the control part is electrically connected with the power part. 3. test device as claimed in claim 2, is characterized in that, described test device also comprises temperature sensor and cooling part, and described temperature sensor and described cooling part are all electrically connected with described control part, and described temperature sensor It is used to detect the temperature of the power part and the expansion part, and the cooling part is used to maintain the working temperature of the power part and the expansion part. 4 . The testing device according to claim 2 , wherein there are multiple telescopic members, and the plurality of telescopic members are arranged at intervals to squeeze different positions of the battery pack tray. 5. The test device according to claim 4, wherein the battery pack tray comprises peripheral beams and a cross beam connecting two opposite side beams, the first side of the cross beam is provided with a plurality of said telescopic The plurality of telescopic elements on the first side perform telescopic movement synchronously. 6. The testing device according to claim 4, wherein a single said dynamic member is connected to a plurality of said telescopic members. 7. The testing device according to any one of claims 2 to 6, wherein the telescopic member is a hydraulic cylinder, the power member is connected to the hydraulic cylinder through a hydraulic pipe, and the hydraulic pipe is used to deliver hydraulic pressure Oil. 8. The test device according to claim 1, wherein the test device further comprises a displacement sensor, the displacement sensor is electrically connected to the control member, and the displacement sensor is used to detect the displacement of the battery pack tray. expansion displacement. 9. The test device according to claim 1, wherein the fixture comprises a base plate and an enclosure fixture, the battery pack tray and the enclosure fixture are both connected to the base plate, and the enclosure fixture is connected to the enclosure fixture. The side of the battery pack tray facing away from the telescopic assembly is attached. 10. The test device according to claim 1, further comprising a terminal, the terminal is electrically connected to the control part, and is used for receiving and analyzing the pressure data transmitted by the control part.

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