Battery short circuit simulation device

Abstract

The utility model provides a battery short-circuit simulation device, relates to the technical field of batteries, and is used for solving the problem that an existing battery short-circuit simulation device is single in simulation scene. The battery short circuit simulation device comprises a battery pack, a short circuit assembly and a clamping device. The battery pack is provided with a first output pole plate and a second output pole plate. One end of the short circuit assembly is connected with one of the first output pole plate and the second output pole plate, and the other end of the short circuit assembly is connected with the other one of the first output pole plate and the second output pole plate. The clamping device is detachably connected with the other end of the short circuit assembly and used for moving the other end of the short circuit assembly so that the other end of the short circuit assembly can be connected with or separated from the other one of the first output pole plate and the second output pole plate. The battery short-circuit simulation device provided by the utility model is used for simulating the battery short-circuit working condition.

Description

TECHNICAL FIELD

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

[0002] In recent years, the electric vehicle industry has developed rapidly, and as the energy storage carrier of electric vehicles, batteries have also received a lot of attention. However, while batteries are widely used, fire accidents have also occurred frequently. In order to avoid threats to the safety of passengers and property, effective protection measures have been taken for power batteries. Therefore, tests are needed to evaluate the risk of thermal runaway caused by external short circuit, verify the effectiveness of the protection measures, and guide the design and optimization of safety protection schemes.

[0003] The prior art discloses a power battery short circuit thermal runaway simulation device, which connects the positive and negative electrodes of the battery through a copper bar to form an electric circuit. Then, the copper bar is driven by an air pump to make the copper bar press tightly, so as to realize the communication of the entire circuit loop and simulate the battery short circuit condition.

[0004] However, simply connecting the positive and negative electrodes of the battery to form an electric circuit to simulate the short circuit scene is single in simulation scene and cannot simulate the external short circuit working condition under some real scenes. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to provide a battery short circuit simulation device to solve the problem of single simulation scene of the existing battery short circuit simulation device.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] The present application provides a battery short circuit simulation device, which comprises a battery pack, a short circuit assembly and a clamping device. The battery pack has a first output plate and a second output plate. One end of the short circuit assembly is connected to one of the first output plate and the second output plate, and the other end of the short circuit assembly is connected to the other of the first output plate and the second output plate. The clamping device is detachably connected to the other end of the short circuit assembly, and is used to move the other end of the short circuit assembly to connect or separate the other end of the short circuit assembly from the other of the first output plate and the second output plate.

[0008] According to the above technical means, the battery short circuit simulation device can connect or disconnect the other end of the short circuit assembly to the other end of the first output plate and the second output plate through the clamping device, so as to realize the connection or disconnection of the loop of the battery pack, thereby simulating the short circuit condition of the battery pack. Further, the clamping device provided by the application can also clamp the other end of the short circuit assembly to fall at different heights and be connected to the other one of the first output plate and the second output plate. The other end of the short circuit assembly falls at different heights, which can simulate the working condition of external short circuit caused by the falling of loose connection of different conductive components, thereby avoiding the single simulation of the short circuit condition of the battery pack.

[0009] In a possible implementation, the clamping device includes a clamping assembly, a driving assembly, and a controller. The clamping assembly is used to clamp the other end of the short circuit assembly. The driving assembly is connected to the clamping assembly and is used to move the clamping assembly so that the clamping assembly moves the other end of the short circuit assembly. The controller is electrically connected to the clamping assembly and is used to control the clamping assembly to clamp or release the other end of the short circuit assembly. The controller is also electrically connected to the driving assembly and is used to control the driving assembly to move the clamping assembly.

[0010] According to the above technical means, the controller can send signals to the clamping assembly and the driving assembly to control the driving assembly to move and drive the clamping assembly connected thereto to move. At the same time, the controller also controls the clamping assembly to clamp the other end of the short circuit assembly, and when the driving assembly drives the clamping assembly and the other end of the short circuit assembly to reach a predetermined position, the controller controls the clamping assembly to release the other end of the short circuit assembly so that the other end of the short circuit assembly falls and contacts the second output plate, thereby simulating the short circuit working condition of the battery pack.

[0011] In a possible implementation, the short circuit assembly includes a first copper bar, a second copper bar, and a third copper bar. The first copper bar is connected to one of the first output plate and the second output plate, the second copper bar is connected to the other one of the first output plate and the second output plate, and the third copper bar is connected between the first copper bar and the second copper bar.

[0012] According to the above technical means, the first output plate and the second output plate are connected through the first copper bar, the second copper bar, and the third copper bar, thereby simulating the short circuit of the battery pack. Taking the first copper bar connected to the first output plate and the second copper bar connected to the second output plate as an example. One end of the first copper bar is connected to the first output plate, and the other end of the first copper bar is connected to one end of the third copper bar. One end of the second copper bar is connected to the second output plate, and the other end of the second copper bar is connected to the other end of the third copper bar, thereby realizing the connection between the positive and negative electrodes of the battery pack, forming a loop, and simulating the short circuit of the battery pack.

[0013] In a possible implementation, the battery pack includes a plurality of battery cells, each battery cell having a positive electrode and a negative electrode. The plurality of battery cells are connected in series, a first output electrode plate is electrically connected to one of the positive electrode and the negative electrode of one of the plurality of battery cells connected in series, and a second output electrode plate is electrically connected to the other of the positive electrode and the negative electrode of another of the plurality of battery cells connected in series.

[0014] According to the above technical means, the short-circuit condition of the battery cells connected in series can be simulated by the short-circuit assembly.

[0015] In a possible implementation, the battery pack includes a plurality of battery cells, each battery cell having a positive electrode and a negative electrode. The plurality of battery cells are connected in parallel, a first output electrode plate is electrically connected to one of the positive electrode and the negative electrode of one of the plurality of battery cells connected in parallel, and a second output electrode plate is electrically connected to the other of the positive electrode and the negative electrode of another of the plurality of battery cells connected in parallel.

[0016] According to the above technical means, the short-circuit condition of the battery cells connected in parallel can be simulated by the short-circuit assembly.

[0017] In a possible implementation, the short-circuit assembly further includes a fastener, the first copper bar and the third copper bar are connected by the fastener, and the second copper bar and the third copper bar are connected by the fastener.

[0018] According to the above technical means, the first copper bar and the third copper bar can be connected by the fastener, and the second copper bar and the third copper bar can be connected by the fastener.

[0019] In a possible implementation, the clamping assembly includes a housing, a driving motor, a lead screw, a first jaw, and a second jaw. The driving motor is arranged inside the housing, and has an output shaft that is threadedly connected to the lead screw. One end of the first jaw is threadedly connected to the lead screw, and the other end of the first jaw extends out of the housing. One end of the second jaw is threadedly connected to the lead screw, and the other end of the second jaw extends out of the housing.

[0020] According to the above technical means, when the driving motor is in operation, the output shaft rotates and drives the lead screw to rotate, so as to drive the first jaw and the second jaw to move along the axial direction of the lead screw, and the first jaw and the second jaw move closer to or farther away from each other, so as to clamp or release the other end of the short-circuit assembly.

[0021] In a possible implementation, the clamping assembly further includes an anti-skid gasket, which is arranged on the surface of the side of the first jaw opposite to the second jaw, and is also arranged on the surface of the side of the second jaw opposite to the first jaw.

[0022] According to the above technical means, when the first jaw and the second jaw of the clamping assembly clamp the other end of the short circuit assembly, the anti-skid pad arranged on the opposite side surfaces of the first jaw and the second jaw can increase the friction between the first jaw, the second jaw and the short circuit assembly, so as to ensure that the clamping assembly can stably clamp the short circuit assembly and avoid that the short circuit assembly is accidentally slipped off during the movement of the clamping assembly.

[0023] In a possible implementation, the battery short circuit simulation device further comprises a temperature sensor, and the temperature sensor is configured to acquire the temperature of the battery pack.

[0024] According to the above technical means, the temperature sensor is configured to acquire the temperature of the battery pack.

[0025] In a possible implementation, the battery short circuit simulation device further comprises a current sensor, and the current sensor is electrically connected with the short circuit assembly, and the current sensor is configured to acquire the current in the loop of the battery pack.

[0026] According to the above technical means, the current sensor is configured to acquire the current in the loop of the battery pack.

[0027] In a possible implementation, the battery short circuit simulation device further comprises a camera, and the camera is configured to acquire the image of the battery pack.

[0028] According to the above technical means, the camera is configured to acquire the image of the battery pack in the simulated short circuit working condition. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 a schematic diagram of a battery short circuit simulation device provided by an embodiment of the present application;

[0030] Figure 2 a schematic diagram of a clamping device provided by an embodiment of the present application;

[0031] Figure 3 a schematic diagram of an anti-skid pad provided by an embodiment of the present application.

[0032] FIG. 1 is a schematic diagram of a battery short circuit simulation device provided by an embodiment of the present application;

[0033] a battery pack 1; a first output plate 11; a second output plate 12;

[0034] a short circuit assembly 2; a first copper bar 21; a second copper bar 22; a third copper bar 23;

[0035] a clamping device 3; a clamping assembly 31; a shell 311; a driving motor 312; an output shaft 3120; a lead screw 313; a first jaw 314; a second jaw 315; a driving assembly 32; a controller 33; an anti-skid pad 34;

[0036] Temperature sensor-4; current sensor-5; camera-6. DETAILED DESCRIPTION

[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0038] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0039] The present application provides a battery short circuit simulation device for simulating an external short circuit of a battery pack, thereby evaluating the risk of thermal runaway caused by the external short circuit of the battery pack, and verifying the effectiveness of the protection measures.

[0040] As shown in Figure 1 The battery short circuit simulation device 100 provided by the present application includes a battery pack 1 having a first output plate 11 and a second output plate 12. Among them, the first output plate 11 can be connected with the positive electrode of the battery pack 1 as a positive output plate, or can be connected with the negative electrode of the battery pack 1 as a negative output plate. It can be understood that when the first output plate 11 is connected with the positive electrode of the battery pack 1 as a positive output plate, the second output plate 12 is connected with the negative electrode of the battery pack 1 as a negative output plate.

[0041] The battery short circuit simulation device 100 provided by the present application further includes a short circuit assembly 2, one end of the short circuit assembly 2 is connected with one of the first output plate 11 and the second output plate 12, and the other end of the short circuit assembly 2 is connected with the other one of the first output plate 11 and the second output plate 12. For example, when one end of the short circuit assembly 2 is connected with the first output plate 11, the other end of the short circuit assembly 2 is connected with the second output plate 12. In this way, the positive electrode and the negative electrode of the battery pack 1 can be connected through the short circuit assembly 2 to form an electric circuit to simulate the short circuit condition of the battery pack 1.

[0042] The battery short circuit simulation device 100 provided by the application further comprises a clamping device 3, which is detachably connected with the other end of the short circuit assembly 2. The clamping device 3 is used to move the other end of the short circuit assembly 2, so that the other end of the short circuit assembly 2 is connected with or separated from the other one of the first output plate 11 and the second output plate 12. For example, when one end of the short circuit assembly 2 is connected with the first output plate 11, the clamping device 3 clamps the other end of the short circuit assembly 2 to be connected with or separated from the second output plate 12.

[0043] In this way, the battery short circuit simulation device 100 provided by the application can clamp the other end of the short circuit assembly 2 to be connected with or separated from the other end of the first output plate 11 and the second output plate 12 through the clamping device 3, so as to realize the connection or disconnection of the loop of the battery pack 1, thereby simulating the short circuit condition of the battery pack 1. Further, the clamping device 3 provided by the application can also clamp the other end of the short circuit assembly 2 to fall at different heights and be connected with the other one of the first output plate 11 and the second output plate 12.

[0044] For example, one end of the short circuit assembly 2 is connected with the first output plate 11, and the other end of the short circuit assembly 2 is connected with the second output plate 12. The clamping device 3 can clamp the other end of the short circuit assembly 2 and drive the other end of the short circuit assembly 2 to rise to different heights (above the second output plate 12). Further, the clamping device 3 releases the other end of the short circuit assembly 2, so that the other end of the short circuit assembly 2 can fall at different heights and be in contact with the second output plate 12. Thus, the working condition of external short circuit caused by the falling of the loose connection of the conductive component is simulated, so that more simulation data can be obtained, and the effectiveness of the protection measures and the risk of thermal runaway of the battery pack 1 in the case of external short circuit can be verified through different short circuit working conditions.

[0045] For example, the clamping device 3 releases the other end of the short circuit assembly 2, so that the other end of the short circuit assembly 2 falls and is in contact with the second output plate 12. During the falling process of the other end of the short circuit assembly 2, the distance between the other end of the short circuit assembly 2 and the second output plate 12 gradually shortens. Since there is a voltage difference between the other end of the short circuit assembly 2 and the second output plate 12, and the voltage difference is large, when the distance between the other end of the short circuit assembly 2 and the second output plate 12 is reduced to a certain range, an electric arc will occur between the other end of the short circuit assembly 2 and the second output plate 12. The electric arc can release a large amount of energy and produce high temperature in a short time, which may aggravate the risk of thermal runaway of the battery pack 1. If the duration of the electric arc is long or the intensity of the electric arc is large, it may also cause the melting, evaporation or chemical property change of the materials of the battery pack 1.

[0046] The falling height of the other end of the short-circuit assembly 2 affects the duration and intensity of the electric arc to some extent. Specifically, the higher the falling height of the short-circuit assembly 2, the greater the instantaneous speed of the other end of the short-circuit assembly 2 when it contacts the second output electrode plate 12, which means that the other end of the short-circuit assembly 2 will approach the second output electrode plate 12 at a faster speed within the range in which an electric arc can be generated. That is, the other end of the short-circuit assembly 2 moves a certain distance, but the speed of the other end of the short-circuit assembly 2 increases. In this way, the duration of the electric arc generated between the other end of the short-circuit assembly 2 and the second output electrode plate 12 will be shortened.

[0047] It should be noted that, ideally, the electric arc will disappear after the other end of the short-circuit assembly 2 contacts the second output electrode plate 12 to form a stable low-resistance path. Based on this, it can be considered that the falling height of the other end of the short-circuit assembly 2 can affect the duration of the electric arc.

[0048] Based on this, it can be known that the battery short-circuit simulation device 100 provided by the present application can control the falling height of the other end of the short-circuit assembly 2, thereby affecting the intensity of the electric arc, to simulate the effects of electric arcs of different intensities on the battery pack 1. In addition, the other end of the short-circuit assembly 2 falls at different heights, has different gravitational potential energy, and thus the kinetic energy converted from the gravitational potential energy is also different. In this way, it is also possible to simulate the damage and short-circuit situations of the battery pack 1 when it is hit by different forces, to obtain more scenarios of the damage and short-circuit situations of the battery pack 1, and to solve the problem of single simulation scenario in the prior art.

[0049] Next, the clamping device 3 provided by the present application will be further described. As shown in Figure 1 The clamping device 3 provided by the present application includes a clamping assembly 31 for clamping the other end of the short-circuit assembly 2.

[0050] The clamping device 3 provided by the present application further includes a driving assembly 32 connected with the clamping assembly 31, for moving the clamping assembly 31 to move the other end of the short-circuit assembly 2 clamped by the clamping assembly 31. Thus, the other end of the short-circuit assembly 2 can fall at different heights (different positions).

[0051] It should be noted that the above-mentioned driving assembly 32 can adopt existing small mechanical arms, such as UR3, UR5, UR10, etc. of the Universal Robots series.

[0052] The clamping device 3 provided by the present application further comprises a controller 33 electrically connected with the clamping assembly 31, the controller 33 being configured to control the clamping assembly 31 to clamp or release the other end of the short-circuit assembly 2. The controller 33 is further electrically connected with the driving assembly 32, and the controller 33 is configured to control the driving assembly 32 to move the clamping assembly 31.

[0053] In this way, the controller 33 can send signals to the clamping assembly 31 and the driving assembly 32 to control the driving assembly 32 to move, thereby driving the clamping assembly 31 connected thereto to move. Meanwhile, the controller 33 controls the clamping assembly 31 to clamp the other end of the short-circuit assembly 2, and when the driving assembly 32 drives the clamping assembly 31 and the other end of the short-circuit assembly 2 to reach a predetermined position, the controller 33 controls the clamping assembly 31 to release the other end of the short-circuit assembly 2, so that the other end of the short-circuit assembly 2 falls and contacts the second output plate 12, thereby simulating the short-circuit working condition of the battery pack 1.

[0054] As shown in FIG. 1, Figure 2 In some embodiments, the clamping assembly 31 provided by the present application comprises a housing 311, a driving motor 312, a lead screw 313, and a first jaw 314 and a second jaw 315. The driving motor 312 is arranged inside the housing 311, and the driving motor 312 has an output shaft 3120. The output shaft 3120 of the driving motor 312 is threadedly connected with the lead screw 313. One end of the first jaw 314 is threadedly connected with the lead screw 313, and the other end of the first jaw 314 extends out of the housing 311. One end of the second jaw 315 is threadedly connected with the lead screw 313, and the other end of the second jaw 315 extends out of the housing 311.

[0055] In this way, when the driving motor 312 works, the output shaft 3120 rotates and drives the lead screw 313 threadedly connected therewith to rotate, thereby driving the first jaw 314 and the second jaw 315 to move along the axial direction of the lead screw 313, and the first jaw 314 and the second jaw 315 move closer to or away from each other, thereby clamping or releasing the other end of the short-circuit assembly 2.

[0056] As shown in FIG. 1, Figure 3 In some embodiments of the present application, the clamping assembly 31 further comprises a non-slip pad 34 arranged on the surface of the side opposite to the first jaw 314 and the second jaw 315, and the non-slip pad 34 is also arranged on the surface of the side opposite to the first jaw 314 and the second jaw 315.

[0057] In this way, when the first jaw 314 and the second jaw 315 of the clamping assembly 31 clamp the other end of the shorting assembly 2, the anti-slip pads 34 provided on the opposite sides of the first jaw 314 and the second jaw 315 can increase the friction between the first jaw 314 and the second jaw 315 and the shorting assembly 2, ensuring that the clamping assembly 31 can stably clamp the shorting assembly 2 and prevent the shorting assembly 2 from accidentally slipping off during the movement of the clamping assembly 31.

[0058] It should be noted that the aforementioned anti-slip pad 34 can be made of insulating and non-flammable materials such as ceramics, mica, or silicone rubber.

[0059] like Figure 1 As shown, in some embodiments of this application, the shorting component 2 may include a first copper busbar 21, a second copper busbar 22, and a third copper busbar 23. The first copper busbar 21 is connected to one of the first output plate 11 and the second output plate 12. The second copper busbar 22 is connected to the other of the first output plate 11 and the second output plate 12. The third copper busbar 23 is connected between the first copper busbar 21 and the second copper busbar 22.

[0060] In this way, the first output plate 11 and the second output plate 12 are connected through the first copper busbar 21, the second copper busbar 22, and the third copper busbar 23, thereby simulating a short circuit in the battery pack 1. Taking the connection of the first copper busbar 21 to the first output plate 11 and the connection of the second copper busbar 22 to the second output plate 12 as an example, one end of the first copper busbar 21 is connected to the first output plate 11, and the other end of the first copper busbar 21 is connected to one end of the third copper busbar 23. One end of the second copper busbar 22 is connected to the second output plate 12, and the other end of the second copper busbar 22 is connected to the other end of the third copper busbar 23, thus achieving a connection between the positive and negative terminals of the battery pack 1, forming a loop, and simulating a short circuit in the battery pack 1.

[0061] It should be noted that, depending on the actual situation, there can be multiple third copper busbars 23 connected between the first copper busbar 21 and the second copper busbar 22. Multiple copper busbars 23 are connected end to end to increase the length, thereby adapting to battery packs 1 of different sizes and different connection requirements.

[0062] Furthermore, it should be noted that one end of the shorting component 2 can be either the first copper busbar 21 or the second copper busbar 22, and the other end of the shorting component 2 can be either the first copper busbar 21 or the second copper busbar 22. For example, one end of the shorting component 2 can be the first copper busbar 21, and the other end of the shorting component 2 can be the second copper busbar 22.

[0063] In some embodiments, the short-circuit assembly 2 can also be a U-shaped copper bar, one end of the U-shaped copper bar is connected with one of the first output plate 11 and the second output plate 12, and the other end of the U-shaped copper bar is connected with the other one of the first output plate 11 and the second output plate 12. For example, one end of the U-shaped copper bar is connected with the first output plate 11, and the other end of the U-shaped copper bar is connected with the second output plate 12.

[0064] It should be noted that the U-shaped copper bar described above can be integrally formed by casting, stamping, bending and the like.

[0065] In addition, it should be noted that the short-circuit assembly 2 provided by the present application further comprises a fastener 2000. In this way, the first copper bar 21 and the third copper bar 23 can be connected by the fastener 2000, and the second copper bar 22 and the third copper bar 23 can be connected by the fastener 2000.

[0066] When the short-circuit assembly 2 is a U-shaped copper bar, one end of the U-shaped copper bar and one of the first output plate 11 and the second output plate 12 can be connected by the fastener 2000.

[0067] In some embodiments, the fastener described above can include a bolt. Taking the connection between the first copper bar 21 and the third copper bar 23 as an example for illustration. The bolt can penetrate one end of the first copper bar 21 and one end of the third copper bar 23, and be threadedly connected with the first copper bar 21 and the third copper bar 23. On this basis, in order to ensure that the bolt connection is more reliable, a nut can also be used to be threadedly connected with the bolt, so as to clamp and fix the first copper bar 21 and the third copper bar 23 between the bolt and the nut.

[0068] In other embodiments, the fastener 2000 described above can also be a rivet. Taking the connection between the first copper bar 21 and the third copper bar 23 as an example for illustration. The rivet penetrates the first copper bar 21 and the third copper bar 23, and by applying pressure, the tail of the rivet is deformed and expanded to form a firm connection point, thereby connecting the first copper bar 21 and the third copper bar 23 together.

[0069] It should be noted that the battery pack 1 provided by the present application comprises a plurality of battery cells, and the battery cells have positive and negative poles. The plurality of battery cells are connected in series, the first output plate 11 is electrically connected with one of the positive and negative poles of one of the plurality of battery cells connected in series. The second output plate 12 is electrically connected with the other one of the positive and negative poles of another one of the plurality of battery cells connected in series. That is, the battery cells of the battery pack 1 form a "large" battery in series, the first output plate 11 is connected with one of the positive and negative poles of the "large" battery, and the second output plate 12 is connected with the other one of the positive and negative poles of the "large" battery, so as to simulate the short-circuit condition of the battery pack 1.

[0070] In other embodiments, the plurality of battery cells of the battery pack 1 can also be connected in parallel, the first output terminal plate 11 is connected with one of the positive electrode and the negative electrode of one of the plurality of battery cells connected in parallel. The second output terminal plate is connected with the other of the positive electrode and the negative electrode of another of the plurality of battery cells connected in parallel, to simulate the short circuit condition of the battery pack 1.

[0071] It should be noted that when the battery cells are connected in series or in parallel, the electrodes of the battery cells are usually connected by using an aluminum bar 300. Figure 1 For example, when connected in series, one end of the aluminum bar 300 is connected with the positive electrode of one battery cell, and the other end of the aluminum bar 300 is connected with the negative electrode of another battery cell. When connected in parallel, the aluminum bar 300 is connected with the same electrode of two battery cells, for example, the positive electrode of two battery cells.

[0072] In this case, in the actual simulation, the battery short circuit simulation device 100 provided by the present application can control the driving assembly 32 to move, thereby driving the clamping assembly 31 to move, so that the other end of the short circuit assembly 2 clamped by the clamping assembly 31 can be connected with the positive electrode or the negative electrode of a different battery cell, to form a loop. It can be understood that the other end of the short circuit assembly 2 is connected with the positive electrode or the negative electrode of a different battery cell to form a loop, which can simulate the thermal runaway condition of the battery pack 1 when a different number and position of battery cells are short-circuited.

[0073] As shown in Figure 1 In some embodiments of the present application, the battery short circuit simulation device 100 provided by the present application further comprises a temperature sensor 4, which is used to obtain the temperature of the battery pack 1. For example, the temperature sensor 4 can be arranged on the first output terminal plate 11 to obtain the temperature of the first output terminal plate 11 when the battery pack 1 is short-circuited. The temperature sensor 4 can also be arranged at other positions, for example, arranged on the aluminum bar 300 to obtain the temperature of the aluminum bar 300 when the battery pack 1 is short-circuited. The present application does not limit the arrangement position of the temperature sensor 4.

[0074] As shown in Figure 1 In some embodiments of the present application, the battery short circuit simulation device 100 provided by the present application can further comprise a current sensor 5, which is electrically connected with the short circuit assembly 2, and is used to obtain the current in the loop of the battery pack 1.

[0075] As shown in Figure 1As shown, in some embodiments of the present application, the battery short circuit simulation device 100 can further comprise a camera 6, which is used to obtain images of the battery pack 1. For example, when the battery pack 1 is connected through the short circuit assembly 2 to simulate a short circuit, the camera 6 can be used to record the electric arc generated during the contact between the short circuit assembly 2 and the first output plate 11 or the second output plate 12. Alternatively, the camera 6 can be used to record the combustion of the battery pack 1 or other conditions caused by thermal runaway of the battery pack 1, so as to better analyze the working conditions of the battery pack 1 when a short circuit occurs.

[0076] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any change or replacement within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A battery short circuit simulation device, characterized by, The battery short circuit simulation device comprises: a battery pack (1) having a first output plate (11) and a second output plate (12); a short circuit assembly (2) connected to one of the first output plate (11) and the second output plate (12) at one end, and connected to the other of the first output plate (11) and the second output plate (12) at the other end; a clamping device (3) detachably connected to the other end of the short circuit assembly (2) for moving the other end of the short circuit assembly (2) to connect or disconnect the other end of the short circuit assembly (2) to the other of the first output plate (11) and the second output plate (12).

2. The battery short circuit simulation device according to claim 1, characterized by The clamping device (3) comprises: a clamping assembly (31) for clamping the other end of the short circuit assembly (2); a driving assembly (32) connected to the clamping assembly (31) for moving the clamping assembly (31) to move the other end of the short circuit assembly (2) clamped by the clamping assembly (31); a controller (33) electrically connected to the clamping assembly (31) for controlling the clamping assembly (31) to clamp or release the other end of the short circuit assembly (2); the controller (33) is also electrically connected to the driving assembly (32) for controlling the driving assembly (32) to move the clamping assembly (31).

3. The battery short circuit simulation device according to claim 1, wherein the short circuit assembly (2) comprises: a first copper bar (21) connected to one of the first output plate (11) and the second output plate (12); a second copper bar (22) connected to the other of the first output plate (11) and the second output plate (12); a third copper bar (23) connected between the first copper bar (21) and the second copper bar (22).

4. The battery short circuit simulation device according to claim 1, wherein the battery pack (1) comprises a plurality of battery cells having positive and negative electrodes; the plurality of battery cells are connected in series, the first output plate (11) is electrically connected to one of the positive and negative electrodes of one of the plurality of battery cells connected in series, and the second output plate (12) is electrically connected to the other of the positive and negative electrodes of another of the plurality of battery cells connected in series; or, the plurality of battery cells are connected in parallel, the first output plate (11) is electrically connected to one of the positive and negative electrodes of one of the plurality of battery cells connected in parallel, and the second output plate (12) is electrically connected to the other of the positive and negative electrodes of another of the plurality of battery cells connected in parallel.

5. The battery short circuit simulation device of claim 3, wherein the short circuit assembly (2) further comprises: The fastener (2000) connects the first copper bar (21) and the third copper bar (23), and connects the second copper bar (22) and the third copper bar (23).

6. The battery short circuit simulation device of claim 2, wherein The clamping assembly (31) comprises: a housing (311); a driving motor (312) arranged inside the housing (311), the driving motor (312) having an output shaft (3120); a lead screw (313) threadedly connected with the output shaft (3120); a first clamping jaw (314) threadedly connected with the lead screw (313) at one end and extending out of the housing (311) at the other end; a second clamping jaw (315) threadedly connected with the lead screw (313) at one end and extending out of the housing (311) at the other end.

7. The battery short circuit simulation device of claim 6, wherein The clamping assembly (31) further comprises: an anti-skid gasket (34) arranged on the surface of the first clamping jaw (314) opposite to the second clamping jaw (315), and arranged on the surface of the second clamping jaw (315) opposite to the first clamping jaw (314).

8. The battery short circuit simulation device of claim 1, wherein, The battery short circuit simulation device (100) further comprises: a temperature sensor (4) for acquiring the temperature of the battery pack (1).

9. The battery short circuit simulation device of claim 1, wherein, The battery short circuit simulation device (100) further comprises: a current sensor (5) electrically connected with the short circuit assembly (2), the current sensor (5) being used for acquiring the current in the loop of the battery pack (1).

10. The battery short circuit simulation device of claim 1, wherein, The battery short circuit simulation device (100) further comprises: a camera (6) for acquiring the image of the battery pack (1).

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