Battery testing device

Abstract

The embodiment of the utility model provides a battery testing device, and belongs to the field of batteries. The battery testing device is used for testing the electrical performance of a single battery of a battery and comprises a rack, a positioning unit and a testing unit, the positioning unit is arranged on the rack and is used for positioning and matching the rack and the battery; the test unit is arranged on the rack and comprises at least one group of test parts, each group of test parts comprises a first test part and a second test part, one end of the first test part is used for being connected with a positive pole of a battery monomer, and the other end of the first test part is used for being connected with test equipment; one end of the second test part is connected with the negative pole of the battery monomer, and the other end of the second test part is connected with test equipment so as to test the electrical performance of the battery monomer. According to the battery testing device, the electrical performance test can be carried out under the condition that the battery monomers in the battery are not disassembled and separated, and the risk that a sample does not reproduce after the battery monomers are disassembled is reduced.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and more particularly, to a battery testing device. Background Art

[0002] Energy conservation and emission reduction are the keys to the sustainable development of the automotive industry. Electric vehicles have become an important part of the sustainable development of the automotive industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] When an abnormal electrical box occurs at the market end, it is necessary to conduct an on-site inspection of the electrical box. Since the battery testing device and the battery disassembly device are usually separated, it is generally necessary to remove the single battery cell in the abnormal electrical box and transfer it to the battery testing device for testing. That is, the electrical performance of the single battery cell cannot be tested before disassembly of the abnormal electrical box, and there is a problem that the sample cannot be reproduced after disassembly, resulting in the inability to find the fault through analysis and potential hidden dangers. Summary of the Utility Model

[0004] The embodiments of this application provide a battery testing device that can perform electrical performance testing on battery cells in the battery without unpacking and separation, reducing the risk of non-reproducibility of the sample caused by disassembly of the battery cell.

[0005] The embodiments of this application provide a battery testing device. The battery testing device is used to perform electrical performance testing on battery cells of a battery. The battery testing device includes a bench, a positioning unit, and a testing unit. The positioning unit is arranged on the bench and is used to positionally cooperate the bench with the battery. The testing unit is arranged on the bench. The testing unit includes at least one set of testing components. Each set of testing components includes a first testing component and a second testing component. One end of the first testing component is used to connect to the positive electrode terminal of the battery cell, and the other end is used to connect to the testing equipment. One end of the second testing component is used to connect to the negative electrode terminal of the battery cell, and the other end is used to connect to the testing equipment to perform electrical performance testing on the battery cell.

[0006] In this solution, through the setting of the positioning unit, the positioning unit can position the bench and the battery, so that during the process of the test unit testing the electrical performance of the battery, the positions of the bench and the battery are kept relatively stationary, which is conducive to ensuring the test accuracy of the test unit for the battery cells. Since the test unit is integrated on the bench, and the test unit includes one or more groups of test components, when testing the electrical performance of the battery cells in the battery, one end of the first test component is connected to the positive electrode post of the battery cell, and the other end is connected to the test equipment. One end of the second test component is connected to the negative electrode post of the battery cell, and the other end is connected to the test equipment. Then, the electrical performance of the corresponding battery cell in the battery can be tested for the corresponding test items. It is not necessary to unpack and separate the battery cells in the battery and transfer them to an external test equipment for testing. The battery testing device can be directly used to realize the positioning of the battery and the electrical performance testing of the battery cells, which improves the testing efficiency of the battery cells and also reduces the risk of non-reproducibility of the samples caused by the disassembly of the battery cells.

[0007] According to some embodiments of the present application, the bench includes a frame body and a plurality of columns. The frame body is used for installing the test unit; the plurality of columns are respectively arranged on the periphery of the frame body, and a test area for battery testing is formed by enclosing between the plurality of columns and the frame body. The battery is located below the frame body.

[0008] In the above technical solution, since the bench includes a frame body and a plurality of columns, the plurality of columns provide a supporting function for the frame body, and a test area for battery testing is formed by enclosing between the plurality of columns and the frame body. Thus, when testing the electrical performance of the battery cells in the battery, the test components on the bench are located above the battery, and the test components can directly test the electrical performance of the corresponding battery cells in the battery, with a simple structure.

[0009] According to some embodiments of the present application, the test unit further includes a position adjustment mechanism. The position adjustment mechanism is arranged between the frame body and the test components, and is used for adjusting the position of the test components.

[0010] In the above technical solution, when using the test components to test the electrical performance of the battery cells, it is necessary to first adjust the position of the test components to correspond to the position of the corresponding battery cells. By arranging a position adjustment mechanism between the frame body and the test components, the relative position of the test components can be adjusted by using the position adjustment mechanism, so that the position of the test components corresponds to the position of the corresponding battery cells to be tested, so as to realize the electrical performance testing of the battery cells in the battery by the test components. Therefore, it is not necessary to adjust the position of the battery, and only the position of the test components needs to be adjusted, which makes the position adjustment more convenient.

[0011] According to some embodiments of the present application, the position adjusting mechanism includes a lifting frame and a lifting component. The lifting frame is used for mounting a plurality of test components; the lifting component is arranged between the lifting frame and the frame body, and the lifting component is used to drive the lifting frame to approach or move away from the battery in the vertical direction.

[0012] In the above technical solution, since the battery is located below the test component and the test component is mounted on the lifting frame, it is necessary to adjust the relative position between the test component and the battery in the vertical direction. Through the arrangement of the lifting component, the lifting component can drive the lifting frame to move in the vertical direction, so as to approach the battery cell and perform electrical performance tests on it. After the electrical performance test is completed, the lifting component is used to drive the test component away from the battery, which is convenient for adjusting the position of the test component again to perform electrical performance tests on different battery cells in the battery again.

[0013] According to some embodiments of the present application, the lifting component includes a lead screw and a guiding part. The lead screw extends in the vertical direction and is rotatably mounted on the frame body. The lifting frame has a nut seat, and the nut seat is in threaded cooperation with the lead screw; the guiding part is arranged on the bench, and the lifting frame is slidably engaged with the guiding part, and the guiding part is used to guide the lifting frame to move in the vertical direction.

[0014] In the above technical solution, by adopting the lead screw-nut pair mechanism for the lifting component, the structure is simple. The nut seat in the lifting frame is in threaded cooperation with the lead screw. Driving the lead screw to rotate, when the lifting frame is slidably engaged with the guiding part on the bench, the lifting frame moves up and down along the axial direction of the lead screw, with high movement accuracy and strong controllability.

[0015] According to some embodiments of the present application, the lifting component further includes a driving member, and the driving member is mounted on the bench and is used to drive the lead screw to rotate along its own axis direction.

[0016] In the above technical solution, through the arrangement of the driving member, the driving member can drive the lead screw to rotate, so as to realize the lifting of the lifting frame, and there is no need to manually drive the lead screw to rotate, and the lifting adjustment of the lifting frame is more labor-saving.

[0017] According to some embodiments of the present application, the lifting frame includes a base body and a moving member. The base body is used to connect with the lifting component; the moving member is slidably arranged on the base body along a first direction, and the test component is arranged on the moving member, and the first direction is perpendicular to the vertical direction.

[0018] In the above technical solution, since the battery cells in the battery are arranged in sequence, when performing electrical performance tests on the battery cells, each cell needs to be detected one by one. Therefore, it is necessary to adjust the position on the plane of the test component. By means of the lifting frame including a base body and a moving member, the base body provides a bearing function for the moving member, the moving member is slidably arranged on the base body, and the test component is located on the moving member. When it is necessary to adjust the position of the test component in the first direction, only by pushing the moving member to move, the position adjustment of the test component in the first direction can be achieved, and the position adjustment is convenient.

[0019] According to some embodiments of the present application, the number of moving members is multiple, and the multiple moving members are spaced apart along the first direction on the base body, and at least one set of test components is arranged on each moving member.

[0020] In the above technical solution, by setting the number of moving members to be multiple, test components can be arranged on each moving member. In this way, the distribution range of the test components on the lifting frame is wider. When performing electrical performance tests on the battery cells in a certain area of the battery, the frequency of position adjustment of the moving member can be reduced, and the test efficiency is correspondingly improved.

[0021] According to some embodiments of the present application, the moving member extends along the second direction, and the test component is slidably arranged on the moving member along the second direction through a slider, and the first direction, the second direction and the vertical direction are perpendicular to each other in pairs.

[0022] In the above technical solution, by slidably arranging the test component on the moving member, the position of the test component in the second direction can be adjusted according to the test requirements, so as to realize the position adjustment of the test component in the first direction, the second direction and the vertical direction to meet the position adjustment requirements of the test component.

[0023] According to some embodiments of the present application, the positioning unit includes a plurality of abutting members, the plurality of abutting members are respectively arranged on a plurality of columns, and the abutting members of the plurality of columns cooperate together to abut against the outer side wall of the battery.

[0024] In the above technical solution, by adopting the abutting and positioning method for the positioning unit, the abutting members are installed on the columns of the bench, and the plurality of abutting members jointly abut against the outer side wall of the battery, providing an abutting function for the outer side wall of the battery, so that the positioning stability between the bench and the battery is good and the structure is simple.

[0025] According to some embodiments of the present application, the abutting member includes a main body and an abutting portion, the main body is installed on the column, the abutting portion is in threaded cooperation with the main body, and one end of the abutting portion located in the test area is used to abut against the outer side wall of the battery to limit the relative movement of the bench with respect to the battery.

[0026] In the above technical solution, by rotating the abutting part, the abutting part can be moved closer to or away from the battery. When the bench is positioned and fitted with the battery, rotate the abutting part forward to make the abutting parts of multiple abutting members respectively abut against different points on the outer wall of the battery, so as to realize the positioning and fitting between the bench and the battery. After the electrical performance test of the battery is completed, rotate the abutting part backward to disengage the abutting part from the outer wall of the battery. After the battery loses its positioning performance, the battery can be separated from the bench. The operation is convenient and fast. Only by rotating the abutting part, the positioning function between the bench and the battery can be realized.

[0027] According to some embodiments of the present application, the abutting member is movably arranged on the column along the height direction of the column.

[0028] In the above technical solution, since the sizes of batteries of different models are different, in order to improve the compatibility of the positioning unit, by movably arranging the abutting member on the column, that is, the position of the abutting member on the column is adjustable, the positioning unit can meet the positioning requirements of batteries of different models, and the applicable range is wider.

[0029] According to some embodiments of the present application, a moving wheel with a locking function is arranged at the bottom of the column.

[0030] In the above technical solution, by arranging a moving wheel at the bottom of the column, the moving wheel makes it convenient to transfer the testing device. When it is necessary to test the battery, move the testing device directly above the battery. After locking the moving wheel, and then using the positioning unit to be positioned and fitted with the battery, the battery can be tested. After the testing device completes the test of the battery, the testing device can be pushed to move the testing device out of the battery, and the transfer is convenient and fast.

[0031] Other features and advantages of the present application will be described in detail in the following specific implementation part. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of a battery testing device provided by some embodiments of the present application;

[0034] Figure 2 It is a front view of a battery testing device provided by some embodiments of the present application;

[0035] Figure 3 For Figure 1Enlarged schematic diagram of A;

[0036] Figure 4 Side view of the battery testing device provided by some embodiments of the present application;

[0037] Figure 5 Top view of the battery testing device provided by some embodiments of the present application.

[0038] Icon: 100 - Battery testing device; 10 - Bench; 11 - Frame body; 12 - Column; 13 - Cross beam; 14 - Movable wheel; 20 - Positioning unit; 21 - Abutting member; 211 - Body; 212 - Abutting portion; 30 - Testing unit; 31 - Testing component; 311 - First testing component; 312 - Second testing component; 313 - Testing terminal; 40 - Position adjusting mechanism; 41 - Lifting frame; 411 - Base body; 4111 - Slide rail; 412 - Movable member; 4121 - Slide seat; 4122 - Slide hole; 413 - Nut seat; 414 - Guide sleeve; 42 - Lifting assembly; 421 - Lead screw; 422 - Guide portion; 4221 - Guide rod; X - First direction; Y - Second direction; Z - Vertical direction. Detailed implementation manners

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0041] References to "embodiments" in this application mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0042] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The term "and / or" in this application is merely a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the front and rear associated objects.

[0044] The term "a plurality of" appearing in this application refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of sheets" refers to two or more sheets (including two sheets).

[0045] Currently, when an abnormal electrical box occurs at the market end, it is necessary to perform an on-site inspection on the electrical box. Since the existing battery testing device and the battery disassembly device are usually separately arranged, it is generally necessary to remove the single battery cell in the abnormal electrical box and transfer it to the battery testing device for testing. That is, the electrical performance of the single battery cell cannot be tested before disassembly of the abnormal electrical box, and there is a problem that the sample cannot be reproduced after disassembly, resulting in the inability to find the fault through analysis and potential hidden dangers of the battery.

[0046] Based on the above considerations, in order to reduce the risk of non-reproducibility of the sample caused by disassembly of the battery cell, this application designs a battery testing device. The battery testing device includes a bench, a positioning unit, and a testing unit; the positioning unit is arranged on the bench, and the positioning unit is used to make the bench cooperate with the battery in a positioning manner; the testing unit is arranged on the bench; the testing unit includes at least one group of testing components, and each group of testing components includes a first testing component and a second testing component. One end of the first testing component is used to connect to the positive electrode terminal of the battery cell, and the other end is used to connect to the testing equipment. One end of the second testing component is used to connect to the negative electrode terminal of the battery cell, and the other end is used to connect to the testing equipment.

[0047] In such a battery test device, since the test unit is integrated on the bench, when performing electrical performance tests on battery cells in the battery, one end of the first test component is connected to the positive terminal post of the battery cell, and the other end is connected to the test equipment. One end of the second test component is connected to the negative terminal post of the battery cell, and the other end is connected to the test equipment. Then, the electrical performance tests of corresponding test items can be carried out on the battery cells in the battery. It is not necessary to unpack and separate the battery cells in the battery and transfer them to an external test equipment for testing. The battery test device can be directly used to locate the battery and perform electrical performance tests on the battery cells, improving the test efficiency of the battery cells and correspondingly reducing the risk of non-reproducibility of samples caused by disassembly of the battery cells.

[0048] An embodiment of the present application provides a battery test device, which is used to perform electrical performance tests on battery cells of a battery. Please refer to Figures 1 to 5 , the battery test device 100 includes a bench 10, a positioning unit 20, and a test unit 30; the positioning unit 20 is arranged on the bench 10, and the positioning unit 20 is used to make the bench 10 cooperate with the battery for positioning; the test unit 30 is arranged on the bench 10; the test unit 30 includes at least one set of test components 31, and each set of test components 31 includes a first test component 311 and a second test component 312. One end of the first test component 311 is used to be connected to the positive terminal post of the battery cell, and the other end is used to be connected to the test equipment. One end of the second test component 312 is used to be connected to the negative terminal post of the battery cell, and the other end is used to be connected to the test equipment, so as to perform electrical performance tests on the battery cells.

[0049] When using the test unit 30 to test the battery cells of the battery, only the upper cover on the upper surface of the battery needs to be removed to expose the battery cells in the battery. It is not necessary to remove the battery cells or separate the battery cells from the battery. Then, the test components 31 in the test unit 30 can be directly used to test the battery cells. The content of the electrical performance test can include test requirements such as K value (self-power consumption) monitoring, DCR, or capacity, etc., and all can be completed by the test equipment. The first test component 311 and the second test component 312 can be conventional test probes, which are prior art and can be directly purchased. The test probe has a test terminal 313. The first test component 311 is connected to the positive terminal post of the battery cell through its test terminal 313, and the other end of the first test component 311 is connected to the test equipment through a circuit; similarly, the second test component 312 is connected to the negative terminal post of the battery cell through its test terminal 313, and the other end of the second test component 312 is connected to the test equipment through a circuit.

[0050] The test unit 30 includes at least one set of test components 31, which means that the test unit 30 can include one set of test components 31 or multiple sets of test components 31. The number of test components 31 can be determined according to the actual situation. Optionally, the test unit 30 includes multiple sets of test components 31, and the multiple sets of test components 31 are spaced apart on the test bench 10, which can improve the test efficiency of the test unit 30 for the battery cells.

[0051] The test equipment refers to the equipment for electrically testing the battery cells. The test equipment can be installed on the top of the test bench 10, that is, the test equipment is integrally set with the test bench 10. Of course, the test equipment can also be set separately from the test bench 10, and it is only necessary to electrically connect the test equipment and the test components 31 through a circuit.

[0052] The positioning unit 20 refers to the positioning component that positions between the test bench 10 and the battery, so that when the test components 31 perform electrical performance tests on the battery cells in the battery, the relative positions between the test bench 10 and the battery will not change, ensuring the accuracy of the electrical performance test process. The specific structure of the positioning unit 20 can be various. For example, the positioning unit 20 can be a pressing cylinder, a clamping cylinder, a vacuum suction component or a holding member 21 and other positioning components.

[0053] When the positioning unit 20 is a pressing cylinder, the pressing cylinder contacts the top surface of the battery to provide a downward pressure to the battery, thereby positioning and matching the battery with the test bench 10. When the positioning unit 20 is a clamping cylinder, the clamping cylinder can be used to clamp both sides of the battery, thereby realizing positioning for the electricity. When the positioning unit is a vacuum suction component, the positioning unit is suction-fitted with the battery, and the vacuum suction component generates a negative pressure on the battery, so that the test bench 10 and the battery are suction-fixed, and the positioning function can be provided for the battery. Of course, the positioning unit can also be a holding member, and the holding member provides a holding function for the side surface of the battery, so that the test bench 10 and the battery are relatively fixed. That is to say, when the positioning unit is a clamping cylinder or a holding member, the positioning unit can be in contact and cooperate with multiple side surfaces of the battery to realize the positioning and fixing of the battery.

[0054] In this solution, through the setting of the positioning unit 20, the positioning unit 20 can position the test bench 10 and the battery, so that during the process of the test unit 30 testing the electrical performance of the battery, the positions of the test bench 10 and the battery are kept relatively stationary, which is beneficial to ensuring the test accuracy of the test unit 30 for the battery cells. By integrating the test unit 30 on the test bench 10, the test unit 30 includes one or more groups of test components 31. When testing the electrical performance of the battery cells in the battery, one end of the first test component 311 is connected to the positive electrode post of the battery cell, and the other end is connected to the test equipment. One end of the second test component 312 is connected to the negative electrode post of the battery cell, and the other end is connected to the test equipment. Then, the electrical performance tests of the corresponding test items can be carried out on the battery cells in the battery. It is not necessary to unpack and separate the battery cells in the battery and transfer them to an external test equipment for testing. The battery testing device can be directly used to realize the positioning of the battery and the electrical performance testing of the battery cells, which improves the testing efficiency of the battery cells and also reduces the risk of non-reproducibility of the samples caused by the disassembly of the battery.

[0055] According to some embodiments of the present application, please refer to Figure 1 and Figure 2 , the test bench 10 includes a frame body 11 and a plurality of columns 12. The frame body 11 is used for installing the test unit 30; the plurality of columns 12 are respectively arranged on the periphery of the frame body 11, and a test area for battery testing is formed by enclosing between the plurality of columns 12 and the frame body 11. The battery is located below the frame body 11.

[0056] The frame body 11 can be a frame body structure of various shapes. For example, the frame body 11 can be a rectangular frame body, a circular frame body or a triangular frame body. When the frame body 11 is a rectangular frame body, the number of columns 12 is four, and the four columns 12 are respectively installed at the four corners of the frame body 11, and the four columns 12 provide a supporting function for the frame body 11. A cross beam 13 can be connected between two columns 12, and the setting of the cross beam 13 improves the integrity of the test bench 10.

[0057] Since the test bench 10 includes a frame body 11 and a plurality of columns 12, the plurality of columns 12 provide a supporting function for the frame body 11, and a test area for battery testing is formed by enclosing between the plurality of columns 12 and the frame body 11. Thus, when testing the electrical performance of the battery cells in the battery, the test components 31 on the test bench 10 are located above the battery, and the test components 31 can directly carry out the electrical performance testing on the corresponding battery cells in the battery, and the structure is simple.

[0058] Before performing battery tests, it is necessary to align the positions of the test component 31 and the corresponding battery cells in the battery to facilitate the tests. Specifically, the battery can be kept stationary, and the position of the test component 31 can be adjusted to align the position of the test component 31 with the corresponding battery cell in the battery. Alternatively, the position of the test component 31 can be kept stationary, and the position of the battery can be adjusted so that the corresponding battery cell in the battery corresponds to the position of the test component 31. Of course, it is also possible to adjust the positions of both the battery and the test component 31 to align the position of the test component 31 with the corresponding battery cell in the battery.

[0059] According to some embodiments of the present application, please refer to Figure 2 , the test unit 30 further includes a position adjustment mechanism 40. The position adjustment mechanism 40 is disposed between the frame 11 and the test component 31, and the position adjustment mechanism 40 is used to adjust the position of the test component 31.

[0060] The position adjustment mechanism 40 enables the test component 31 to be movably disposed on the bench 10, thereby realizing the adjustment of the position of the test component 31, making the position of the test component 31 correspond to the corresponding battery cell in the battery to meet the test requirements of the corresponding battery cell in the battery. The position adjustment mechanism 40 can realize the position adjustment of the test component 31 in one direction or multiple directions, which can be determined according to the actual situation.

[0061] When performing electrical performance tests on battery cells using the test component 31, it is necessary to first adjust the position of the test component 31 to correspond to the position of the corresponding battery cell. By providing a position adjustment mechanism 40 between the frame 11 and the test component 31, the relative position of the test component 31 can be adjusted using the position adjustment mechanism 40, so that the position of the test component 31 corresponds to the position of the corresponding battery cell to be tested, thereby realizing the electrical performance test of the battery cells in the battery by the test component 31. Thus, it is not necessary to adjust the position of the battery, and only the position of the test component 31 needs to be adjusted, making the position adjustment more convenient.

[0062] According to some embodiments of the present application, please refer to Figures 1 to 5 , the position adjustment mechanism 40 includes a lifting frame 41 and a lifting assembly 42. The lifting frame 41 is used for installing a plurality of test components 31; the lifting assembly 42 is disposed between the lifting frame 41 and the frame 11, and the lifting assembly 42 is used to drive the lifting frame 41 to approach or move away from the battery in the vertical direction Z.

[0063] The lifting frame 41 is a frame structure, and multiple test components 31 are installed on the lifting frame 41. The lifting assembly 42 refers to a lifting component that can drive the lifting frame 41 to move along the vertical direction Z, and the structure of the lifting assembly 42 can be various. For example, the lifting assembly 42 can be a lead screw-nut pair mechanism, a rack and pinion mechanism, a cylinder or a hydraulic cylinder and other lifting components, and the specific selection of the lifting assembly 42 can be determined according to the actual situation.

[0064] Since the battery is located below the test component 31 and the test component 31 is installed on the lifting frame 41, it is necessary to adjust the relative position of the test component 31 and the battery in the vertical direction. Through the setting of the lifting assembly 42, the lifting assembly 42 can drive the lifting frame 41 to move along the vertical direction Z, so as to approach the battery cell and perform electrical performance tests on it. After the electrical performance test is completed, the lifting assembly 42 is used to drive the test component 31 away from the battery, which is convenient for adjusting the position of the test component 31 again to perform electrical performance tests on different battery cells in the battery again.

[0065] According to some embodiments of the present application, please combine Figure 1 and Figure 4 , the lifting assembly 42 includes a lead screw 421 and a guiding part 422. The lead screw 421 extends along the vertical direction Z, and the lead screw 421 is rotatably installed on the frame body 11. The lifting frame 41 has a nut seat 413, and the nut seat 413 is in threaded cooperation with the lead screw 421; the guiding part 422 is arranged on the bench 10, and the lifting frame 41 is in sliding cooperation with the guiding part 422. The guide rod 4221 is used to guide the lifting frame 41 to move along the vertical direction Z.

[0066] The nut seat 413 refers to a nut with an internal thread. The nut seat 413 is fixedly connected to the lifting frame 41, and the lifting frame 41 is in threaded cooperation with the lead screw 421 through the nut seat 413. The guiding part 422 can be a guide rod 4221. The number of the guide rods 4221 can be multiple. A guide sleeve 414 that is in guiding cooperation with the guide rod 4221 is correspondingly arranged on the outer side of the lifting frame 41, and the guide sleeve 414 is sleeved on the guide rod 4221.

[0067] Exemplarily, the number of the guide rods 4221 is set to four. The four guide rods 4221 are respectively located on the opposite sides of the bench 10. The lower ends of the guide rods 4221 are connected to the cross beam 13, and the upper ends of the guide rods 4221 are connected to the frame body 11. When the lead screw 421 is used to drive the nut seat 413 to rotate, the guide sleeve 414 is in guiding cooperation with the guide rod 4221, which can prevent the lifting frame 41 from rotating together with the lead screw 421, so that the lifting frame 41 can only move up and down along the extension direction of the lead screw 421, playing a role in preventing rotation.

[0068] The screw rod 421 can be rotated manually, and a handle is provided on the screw rod 421. By rotating the handle, the screw rod 421 is driven to rotate, thereby realizing the up and down movement of the lifting frame 41. Of course, the screw rod 421 can also be driven by a motor, and the motor drives the screw rod 421 to rotate.

[0069] By adopting the lifting assembly 42 as a screw-nut sub-mechanism, the structure is simple, the nut seat 413 in the lifting frame 41 is threadedly engaged with the screw 421, driving the screw 421 to rotate, and when the lifting frame 41 and the guide part 422 on the platform 10 are slidingly engaged, the lifting frame 41 moves up and down along the axial direction of the screw 421 with high movement accuracy and strong controllability.

[0070] According to some embodiments of the present application, the lifting assembly 42 further includes a driving member (not shown in the figure), which is mounted on the platform 10 and is used to drive the screw rod 421 to rotate along its own axis.

[0071] The driving member may be a motor, for example, the driving member is a forward and reverse motor, and the lifting assembly 42 is lifted or lowered by the forward and reverse rotation of the forward and reverse motor.

[0072] By setting the driving member, the driving member can drive the screw rod 421 to rotate, thereby realizing the lifting of the lifting frame 41. There is no need for manual driving of the screw rod 421 to rotate, and the lifting and lowering adjustment of the lifting frame 41 is more labor-saving.

[0073] According to some embodiments of this application, please refer to Figure 2 、 Figure 3 and Figure 4 The lifting frame 41 includes a base 411 and a moving member 412, the base 411 is used to connect with the lifting assembly 42; the moving member 412 is slidably arranged on the base 411 along a first direction X, and the test component 31 is arranged on the moving member 412, and the first direction X is perpendicular to the vertical direction Z.

[0074] The base 411 is a square double-layer frame structure, and the upper and lower layers of the double-layer frame structure are both provided with slide rails 4111. The upper and lower sides of both ends of the length direction of the movable member 412 are both provided with slide seats 4121 that slide and cooperate with the slide rails 4111. The movable member 412 slides and cooperates with the slide rails 4111 on the base 411 through the slide seats 4121, and has high sliding stability. Pushing the movable member 412 can cause the movable member 412 to move along the first direction X on the base 411, thereby adjusting the position of the test component 31 in the first direction X. Of course, the cross-sectional shape of the slide rail 4111 can be a dovetail shape, and the slide seat 4121 has a corresponding dovetail-shaped chute.

[0075] Since the battery cells in the battery are arranged in sequence, when performing electrical performance tests on the battery cells, each cell needs to be detected one by one. Therefore, it is necessary to adjust the position on the plane of the test component 31. The lifting frame 41 includes a base body 411 and a moving member 412. The base body 411 provides a bearing function for the moving member 412. The moving member 412 is slidably arranged on the base body 411, and the test component 31 is located on the moving member 412. When it is necessary to adjust the position of the test component 31 in the first direction X, only by pushing the moving member 412 to move can the position adjustment of the test component 31 in the first direction X be realized, and the position adjustment is convenient.

[0076] According to some embodiments of the present application, please refer to Figure 2 , the number of the moving members 412 is multiple, and the multiple moving members 412 are spaced apart along the first direction X on the base body 411, and at least one set of test components 31 is arranged on each moving member 412.

[0077] By setting the number of the moving members 412 to be multiple, at least one set of test components 31 can be arranged on each moving member 412, and the distribution range of the test components 31 on the lifting frame 41 is wider. When performing electrical performance tests on the battery cells in a certain area of the battery, the frequency of position adjustment of the moving member 412 can be reduced, and the test efficiency is correspondingly improved.

[0078] According to some embodiments of the present application, please refer to Figure 4 and Figure 5 , the moving member 412 extends along the second direction Y, the test component 31 is slidably arranged on the moving member 412 along the second direction Y, and the first direction X, the second direction Y and the vertical direction Z are perpendicular to each other in pairs.

[0079] A long strip-shaped sliding hole 4122 is formed in the moving member 412 along the second direction Y. The test component 31 has a sliding part, and the sliding part passes through the sliding hole 4122 and can slide along the length direction of the sliding hole 4122.

[0080] By slidably arranging the test component 31 on the moving member 412, the position of the test component 31 in the second direction Y can be adjusted according to the test requirements, so as to realize the position adjustment of the test component 31 in the first direction X, the second direction Y and the vertical direction Z to meet the position adjustment requirements of the test component 31.

[0081] According to some embodiments of the present application, please refer to Figure 2 , the positioning unit 20 includes a plurality of abutting members 21, the plurality of abutting members 21 are respectively arranged on a plurality of columns 12, and the abutting members 21 of the plurality of columns 12 cooperate together to abut and cooperate with the outer side wall of the battery.

[0082] The holding member 21 can have various structures. The holding member 21 can be a telescopic mechanism or a positioning bolt. For example, when the holding member 21 is a telescopic mechanism, such as a cylinder or an electric push rod, the holding or releasing of the outer wall of the battery can be achieved by using the telescopic function of the holding member 21 itself. Of course, the holding member 21 can also be a conventional positioning bolt. By rotating the positioning bolt, the positioning bolt moves back and forth to achieve the function of holding and positioning the battery.

[0083] The number of holding members 21 on each column 12 can be one or multiple, and the number of holding members 21 can be specifically determined according to the actual situation. In this embodiment, one holding member 21 is provided on each column 12, and the holding members 21 on multiple columns 12 are located on the circumferential side of the battery. The multiple holding members 21 cooperate together to perform the function of positioning the outer wall of the battery.

[0084] By adopting the method of holding and positioning through the positioning unit, the holding member 21 is installed on the column 12 of the bench 10. The multiple holding members 21 jointly cooperate with the outer wall of the battery to provide the function of holding the outer wall of the battery, making the positioning stability between the bench 10 and the battery good and the structure simple.

[0085] According to some embodiments of the present application, please continue to refer to Figure 2 that the holding member 21 includes a body 211 and a holding portion 212. The body 211 is installed on the column 12, and the holding portion 212 is in threaded cooperation with the body 211. One end of the holding portion 212 located in the test area is used to hold the outer wall of the battery to limit the movement of the bench 10 relative to the battery.

[0086] The holding portion 212 is a positioning screw, and the positioning screw is in threaded cooperation with the body 211. In order to avoid damage to the appearance of the battery by the end of the positioning screw close to the battery, a flexible gasket can be provided at the end of the positioning screw close to the battery. The gasket can not only increase the contact area of the positioning screw and reduce the pressure between the positioning screw and the battery, but also the flexible gasket can play a buffering role to reduce the probability of the positioning screw damaging the outer surface of the battery.

[0087] By rotating the holding portion 212, it is possible to move the holding portion 212 closer to or farther away from the battery. When the bench 10 is in positioning cooperation with the battery, rotate the holding portion 212 forward to make the holding portions 212 of the multiple holding members 21 respectively hold different points on the outer wall of the battery, so as to achieve the positioning cooperation between the bench 10 and the battery. After the electrical performance test of the battery is completed, rotate the holding portion 212 backward to separate the holding portion 212 from the outer wall of the battery. After the battery loses its positioning performance, the battery can be separated from the bench 10. The operation is convenient and fast. Only by rotating the holding portion 212 can the positioning function between the bench 10 and the battery be achieved.

[0088] According to some embodiments of the present application, the abutting member 21 is movably disposed on the column 12 along the height direction of the column 12.

[0089] The body 211 is provided with a slider, and a chute is correspondingly provided on the column 12. The chute extends along the height direction of the column 12, and the body 211 is in sliding fit with the chute. The position adjustment of the abutting member 21 on the column 12 can be in a manual adjustment manner or an automatic adjustment manner. When the abutting member 21 is manually adjusted, a locking member is correspondingly provided on the column 12. The locking member is in threaded fit with the body 211, and one end of the locking member can abut against the outer wall of the column 12 to limit the movement of the abutting member 21 on the column 12. When it is necessary to adjust the position of the abutting member 21, only the locking member needs to be loosened, and the abutting member 21 can move on the column 12, and the position of the abutting member 21 can be correspondingly adjusted.

[0090] Of course, when the abutting member 21 is electrically adjusted, an electric push rod or a cylinder can be provided on the column 12, and the electric push rod or the cylinder is used to drive the abutting member 21 to adjust its position on the column 12.

[0091] Since the sizes of different models of batteries are different, in order to improve the compatibility of the positioning unit, by movably arranging the abutting member 21 on the column 12, that is, the position of the abutting member 21 on the column 12 is adjustable, the positioning unit can meet the positioning requirements of different models of batteries, and the applicable range is wider.

[0092] According to some embodiments of the present application, please refer to Figure 1 , a moving wheel 14 with a locking function is provided at the bottom of the column 12.

[0093] The moving wheel 14 can be a universal wheel. The moving wheel 14 with a locking function can be directly purchased, and no more details about the moving wheel 14 will be described here.

[0094] By providing the moving wheel 14 at the bottom of the column 12, the moving wheel 14 makes it convenient to transfer the testing device. When it is necessary to test the battery, move the testing device to directly above the battery. After locking the moving wheel 14, and then using the positioning unit 20 to cooperate with the battery for positioning, the battery can be tested. After the testing device completes the test of the battery, the testing device can be pushed to move the testing device out of the battery, and the transfer is convenient and fast.

[0095] In some embodiments, please refer to Figures 1 to 5, the battery testing device includes a bench 10, a positioning unit 20, and a testing unit 30; the positioning unit 20 is disposed on the bench 10, and the positioning unit 20 is used to positionally cooperate the bench 10 with the battery; the bench 10 includes a frame body 11 and a plurality of columns 12, the frame body 11 is for the testing unit 30 to be installed; the plurality of columns 12 are respectively disposed on the peripheral side of the frame body 11, and a testing area for battery testing is formed by enclosing between the plurality of columns 12 and the frame body 11. The battery is located below the frame body 11, and a moving wheel 14 with a locking function is provided at the bottom of the column 12. The testing unit 30 is disposed on the bench 10; the testing unit 30 includes multiple groups of testing components 31, each group of testing components 31 includes a first testing component 311 and a second testing component 312. One end of the first testing component 311 is used to connect with the positive electrode post of the battery cell, and the other end is used to connect with the testing device. One end of the second testing component 312 is used to connect with the negative electrode post of the battery cell, and the other end is used to connect with the testing device to perform electrical performance testing on the battery cell. The testing unit 30 further includes a position adjustment mechanism 40, and the position adjustment mechanism 40 is disposed between the frame body 11 and the testing component 31. The position adjustment mechanism 40 is used to adjust the relative position between the testing component 31 and the battery cell of the battery.

[0096] When performing electrical performance testing on the battery cells in the battery, connect one end of the first testing component 311 to the positive electrode post of the battery cell, and the other end to the testing device. Connect one end of the second testing component 312 to the negative electrode post of the battery cell, and the other end to the testing device. Then, the electrical performance testing of the corresponding test items can be performed on the battery cells in the battery. It is not necessary to unpack and separate the battery cells in the battery and transfer them to an external testing device for testing. The battery testing device can be directly used to achieve the positioning of the battery and the electrical performance testing of the battery cells, improving the testing efficiency of the battery cells and reducing the risk of non-reproducibility of the samples caused by disassembly of the battery. When using the testing component 31 to perform electrical performance testing on the battery cells, it is necessary to first adjust the position of the testing component 31 to correspond to the position of the corresponding battery cell. By providing a position adjustment mechanism 40 between the frame body 11 and the testing component 31, the relative position of the testing component 31 can be adjusted by using the position adjustment mechanism 40, so that the position of the testing component 31 corresponds to the position of the corresponding battery cell to be tested, so as to realize the electrical performance testing of the battery cells in the battery by the testing component 31. Therefore, it is not necessary to adjust the position of the battery, and only the position of the testing component 31 needs to be adjusted, which is more convenient for position adjustment.

[0097] In some embodiments, the position adjustment mechanism 40 includes a lifting frame 41 and a lifting assembly 42. The lifting frame 41 is for mounting the test component 31. The lifting assembly 42 is disposed between the lifting frame 41 and the frame body 11, and is configured to drive the lifting frame 41 to approach or move away from the battery in the vertical direction Z. The lifting assembly 42 includes a lead screw 421 and a guiding portion 422. The lead screw 421 extends along the vertical direction Z and is rotatably mounted on the frame body 11. The lifting frame 41 has a nut seat 413, and the nut seat 413 is in threaded engagement with the lead screw 421. The guiding portion 422 is disposed on the bench 10, and the lifting frame 41 is in sliding engagement with the guiding portion 422. The guiding rod 4221 is for guiding the lifting frame 41 to move in the vertical direction Z. The lifting frame 41 includes a base body 411 and a moving member 412. The base body 411 is for connecting with the lifting assembly 42. The moving member 412 is slidably disposed on the base body 411 along the first direction X, and the test component 31 is disposed on the moving member 412. The first direction X is perpendicular to the vertical direction Z. The number of the moving members 412 is multiple, and the multiple moving members 412 are spaced apart along the first direction X on the base body 411. At least one test component 31 is disposed on each moving member 412. The moving member 412 extends along the second direction Y, and the test component 31 is slidably disposed on the moving member 412 along the second direction Y. The first direction X, the second direction Y, and the vertical direction Z are perpendicular to each other in pairs.

[0098] Through the arrangement of the lifting component 42, the lifting component 42 can drive the lifting frame 41 to move along the vertical direction Z, so as to approach the battery cell and perform electrical performance testing on it. After the electrical performance testing is completed, the lifting component 42 is used to drive the testing component 31 away from the battery, which is convenient for adjusting the position of the testing component 31 again to perform electrical performance testing on different battery cells in the battery again. The lifting component 42 is adopted as a lead screw-nut pair mechanism, which has a simple structure. The nut seat 413 in the lifting frame 41 is in threaded cooperation with the lead screw 421. By driving the lead screw 421 to rotate, when the lifting frame 41 is in sliding cooperation with the guiding part 422 on the bench 10, the lifting frame 41 moves up and down along the axial direction of the lead screw 421, with high movement precision and strong controllability. The lifting frame 41 includes a base body 411 and a moving part 412. The base body 411 provides a bearing function for the moving part 412. The moving part 412 is slidably arranged on the base body 411, and the testing component 31 is located on the moving part 412. When it is necessary to adjust the position of the testing component 31 in the first direction X, only by pushing the moving part 412 to move, the position adjustment of the testing component 31 in the first direction X can be realized, and the position adjustment is convenient. The number of moving parts 412 is set to be multiple, and a testing component 31 can be arranged on each moving part 412. In this way, every two testing components 31 can be paired for testing, and the distribution range of the testing components 31 on the lifting frame 41 is wider. When performing electrical performance testing on the battery cells in a certain area of the battery, the frequency of position adjustment of the moving part 412 can be reduced, and the testing efficiency is correspondingly improved. The position of the testing component 31 in the second direction Y can be adjusted according to the testing requirements, so as to realize the position adjustment of the testing component 31 in the first direction X, the second direction Y and the vertical direction Z to meet the position adjustment requirements of the battery cells.

[0099] In some embodiments, the positioning unit 20 includes a plurality of abutting members 21, and the plurality of abutting members 21 are respectively arranged on a plurality of columns 12. The abutting members 21 of the plurality of columns 12 cooperate together to abut against the outer side wall of the battery. The abutting member 21 includes a body 211 and an abutting portion 212. The body 211 is installed on the column 12, and the abutting portion 212 is in threaded cooperation with the body 211. One end of the abutting portion 212 located in the testing area is used to abut against the outer side wall of the battery to limit the movement of the bench 10 relative to the battery.

[0100] The positioning unit adopts a holding and positioning method. The holding member 21 is installed on the column 12 of the bench 10. A plurality of holding members 21 jointly cooperate with the outer sidewall of the battery to provide the function of holding the outer sidewall of the battery, so that the positioning stability between the bench 10 and the battery is good and the structure is simple. By rotating the holding portion 212, it is possible to move the holding portion 212 closer to or farther away from the battery. When the bench 10 and the battery are positioned and cooperated, the holding portion 212 is rotated forward to make the holding portions 212 of the plurality of holding members 21 respectively hold at different points on the outer sidewall of the battery, so as to realize the positioning cooperation between the bench 10 and the battery. After the electrical performance test of the battery is completed, the holding portion 212 is rotated reversely to separate the holding portion 212 from the outer sidewall of the battery. After the battery loses its positioning performance, the battery can be separated from the bench 10. The operation is convenient and fast. Only by rotating the holding portion 212 can the positioning function between the bench 10 and the battery be realized.

[0101] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0102] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A battery testing device for performing electrical performance tests on battery cells of a battery, characterized in that, Comprising: Bench; Positioning unit, arranged on the bench, and the positioning unit is used for making the bench cooperate with the battery in a positioning manner; Testing unit, arranged on the bench; the testing unit includes at least one group of testing components, and each group of the testing components includes a first testing component and a second testing component. One end of the first testing component is used for connecting with the positive electrode post of the battery cell, and the other end is used for connecting with the testing device. One end of the second testing component is used for connecting with the negative electrode post of the battery cell, and the other end is used for connecting with the testing device, so as to perform electrical performance testing on the battery cell.

2. The battery testing device according to claim 1, wherein The bench includes: Frame body, for installing the testing unit; A plurality of columns, respectively arranged on the periphery of the frame body. A testing area for testing the battery is formed by enclosing between the plurality of columns and the frame body, and the battery is located below the frame body.

3. The battery testing device according to claim 2, characterized in that, The testing unit further includes: Position adjusting mechanism, arranged between the frame body and the testing components, and the position adjusting mechanism is used for adjusting the positions of the testing components.

4. The battery testing device according to claim 3, characterized in that, The position adjusting mechanism includes: Lifting frame, for installing a plurality of the testing components; Lifting component, arranged between the lifting frame and the frame body, and the lifting component is used for driving the lifting frame to approach or move away from the battery in the vertical direction.

5. The battery testing device according to claim 4, wherein The lifting component includes: Lead screw, extending along the vertical direction, and the lead screw is rotatably installed on the frame body. The lifting frame has a nut seat, and the nut seat is in threaded cooperation with the lead screw; Guiding part, arranged on the bench, and the lifting frame is in sliding cooperation with the guiding part. The guiding part is used for guiding the lifting frame to move in the vertical direction.

6. The battery testing device according to claim 5, characterized in that, The lifting component further includes: Driving part, installed on the bench, and the driving part is used for driving the lead screw to rotate along its own axis direction.

7. The battery testing device according to claim 4, wherein, The lifting frame includes: Base body, for connecting with the lifting component; Moving part, slidably arranged on the base body along a first direction, and the testing component is arranged on the moving part. The first direction is perpendicular to the vertical direction.

8. The battery testing device according to claim 7, wherein, The number of the moving parts is multiple, and the multiple moving parts are spaced apart along the first direction on the base body. At least one group of the testing components is arranged on each moving part.

9. The battery testing device according to claim 8, wherein, The moving part extends along a second direction, and the testing component is slidably arranged on the moving part along the second direction. The first direction, the second direction and the vertical direction are perpendicular to each other in pairs.

10. The battery testing device according to claim 2, characterized in that, The positioning unit includes a plurality of abutting parts, and the plurality of abutting parts are respectively arranged on the plurality of columns. The abutting parts of the plurality of columns cooperate together to abut against the outer side wall of the battery.

11. The battery testing device according to claim 10, wherein, The abutting part includes a body and an abutting portion. The body is installed on the column, and the abutting portion is in threaded cooperation with the body. One end of the abutting portion located in the testing area is used for abutting against the outer side wall of the battery to limit the movement of the bench relative to the battery.

12. The battery testing device according to claim 10, characterized in that, The abutting part is movably arranged on the column along the height direction of the column.

13. The battery testing device according to claim 2, wherein, A moving wheel with a locking function is arranged at the bottom of the column.

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