Battery size detection device

Abstract

The utility model provides a battery size detection device, which comprises a supporting part, a pressing part, a counterweight assembly and a distance detection unit, and is characterized in that the supporting part is provided with a supporting plane, and the supporting plane is used for placing a battery. The pressing part is arranged above the supporting plane in the gravity direction, the pressing part can move relative to the supporting plane in the gravity direction, the pressing part is provided with a first plane, and the first plane and the supporting plane are oppositely arranged in the gravity direction and used for being attached to the surface of the battery. The counterweight assembly comprises a flexible part, a counterweight part and a supporting part, the flexible part is wound on the supporting part, one end of the flexible part is connected with the pressing part, and the other end of the flexible part is connected with the counterweight part. The distance detection unit is used for detecting the distance between the supporting plane and the first plane in the gravity direction. The battery size detection device provided by the utility model is beneficial to improving the accuracy of battery size detection.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a battery size detection device. Background Art

[0002] Batteries are widely used in electrical devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] During the battery production process, the actual size of the battery often has an error with the designed size. Therefore, after the battery is manufactured, the size of the battery needs to be tested to confirm whether the size of the produced battery is qualified. Therefore, the accuracy of battery size detection has an important impact on determining whether the battery is qualified. How to improve the accuracy of battery size detection has become a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The present application provides a battery size detection device to improve the accuracy of battery size detection.

[0005] This application is achieved through the following technical solutions:

[0006] The battery size detection device provided in the embodiment of the present application includes a support part, a pressing part, a counterweight assembly and a distance detection unit. The support part has a support plane, and the support plane is used to place the battery. The pressing part is arranged above the support plane along the direction of gravity. The pressing part can move relative to the support plane along the direction of gravity. The pressing part has a first plane, which is arranged relative to the support plane along the direction of gravity and is used to fit with the surface of the battery. The counterweight assembly includes a flexible member, a counterweight and a support member. The flexible member is wound around the support member, one end of the flexible member is connected to the pressing part, and the other end is connected to the counterweight. The distance detection unit is used to detect the distance between the support plane and the first plane along the direction of gravity.

[0007] An embodiment of the present application provides a battery size detection device, in which a counterweight assembly is provided, including a flexible member, a counterweight member and a support member. The flexible member is wound around the support member and connects the counterweight member and a pressing portion, so that a portion of the gravity of the pressing portion is balanced by the gravity of the counterweight member, and the pressure of the pressing portion on the battery can be adjusted by adjusting the gravity of the counterweight member, so that the pressure of the pressing portion on the battery is closer to the expected value. During the battery size detection process, the battery is subjected to appropriate pressure, which is conducive to improving the accuracy of the battery size detection.

[0008] According to some embodiments of the present application, the battery size detection device further includes a force measuring unit, which is connected to the flexible member and is used to measure the force borne by the flexible member.

[0009] In the above scheme, it is convenient for the operator to adjust the weight of the counterweight as needed, so that the pressure of the pressing part on the battery is closer to the expected value, which is conducive to further improving the accuracy of battery size detection and improving the efficiency of battery size detection.

[0010] According to some embodiments of the present application, the force measuring unit includes a tension sensor, and the tension sensor is serially connected to the flexible member.

[0011] In the above scheme, it is helpful to further improve the accuracy of battery size detection, and it is helpful to further improve the efficiency of battery size detection.

[0012] According to some embodiments of the present application, the supporting member includes a pulley block, and the flexible member is wound around the pulley block.

[0013] In the above scheme, it is beneficial to further improve the accuracy of battery size detection under the premise of achieving the balance of the gravity of the counterweight component on the pressing part.

[0014] According to some embodiments of the present application, the battery size detection device further includes a force measuring unit, which is connected to the flexible member between the pulley block and the pressing portion and is used to measure the force borne by the flexible member.

[0015] In the above scheme, the force measuring unit is connected to the flexible member between the pulley block and the pressing part, so that the measured tension of the flexible member is closer to the actual value of the pressure of the pressing part on the battery, which is conducive to further improving the accuracy of battery size detection.

[0016] According to some embodiments of the present application, the flexible member includes a steel wire rope.

[0017] In the above solution, the steel wire rope has a strong structural strength, which is beneficial to improving the reliability of the flexible member and reducing the risk of the flexible member breaking.

[0018] According to some embodiments of the present application, the distance detection unit includes a distance sensor or a micrometer.

[0019] In the above scheme, the distance sensor and the micrometer have high measurement accuracy and are easy to read, which is beneficial to improving the accuracy of battery size detection and the efficiency of battery size detection.

[0020] According to some embodiments of the present application, the counterweight includes a weight and a weight plate, and the weight is placed on the weight plate.

[0021] In the above scheme, it is convenient to adjust the total weight of the counterweight, which is beneficial to further improve the efficiency of battery size detection.

[0022] According to some embodiments of the present application, the battery size detection device further includes a protective cover, and the support portion, the pressing portion, the counterweight assembly, and the distance detection unit are disposed inside the protective cover.

[0023] In the above solution, by providing a protective cover, a certain protection effect can be provided for other structures of the battery size detection device.

[0024] According to some embodiments of the present application, the battery size detection device further includes a first driving mechanism, which is connected to the pressing portion and is used to drive the pressing portion to move along the direction of gravity.

[0025] In the above solution, a first driving mechanism is provided to be connected to the pressing part, so that the pressing part can be driven to move along the gravity direction by the first driving mechanism, so that the size of the battery can be measured more conveniently and labor-savingly.

[0026] According to some embodiments of the present application, the first driving mechanism includes a cylinder, and a piston of the cylinder is connected to the pressing part.

[0027] In the above scheme, the first driving mechanism includes a cylinder, which has a simple structure and high reliability, is cleaner and more hygienic during use, and is conducive to meeting the cleanliness requirements of the battery production space.

[0028] According to some embodiments of the present application, the battery size detection device includes a first slide rail, which is supported by a support portion and extends a preset distance along the direction of gravity, and the pressing portion is slidably connected to the first slide rail.

[0029] In the above solution, the first slide rail can provide a certain guiding effect for the movement of the pressing part along the direction of gravity, which is beneficial to improving the smoothness of the movement of the pressing part along the direction of gravity.

[0030] According to some embodiments of the present application, the support portion includes a bracket, a second slide rail and a test platform, the second slide rail is supported by the bracket. The test platform has a support plane, the test platform is slidably connected to the second slide rail, and can move relative to the second slide rail in a first direction, and the first direction intersects with the direction of gravity.

[0031] In the above scheme, it is easy to take or place the battery, which is beneficial to further improve the efficiency of battery size detection.

[0032] According to some embodiments of the present application, the support portion further includes at least three leveling members, which are disposed at the bottom of the bracket, and the leveling members are configured to be able to adjust their own dimensions along the direction of gravity.

[0033] In the above scheme, the dimension of the leveling piece in the gravity direction can be adjusted so that the supporting plane is set as horizontally as possible, which is beneficial to further improve the accuracy of battery size detection.

[0034] According to some embodiments of the present application, the battery size detection device also includes a second drive mechanism, which includes a motor, a nut and a lead screw, the lead screw is connected to the output shaft of the motor, the nut is threadedly connected to the lead screw, and is connected to the test platform.

[0035] In the above solution, the rotation of the lead screw is converted into the translation of the test platform through the cooperation of the lead screw and the nut, so that the movement of the test platform along the first direction can be achieved more conveniently and labor-savingly.

[0036] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic diagram of the structure of a battery size detection device provided in an embodiment of the present application;

[0039] Figure 2 A schematic diagram of the structure of another battery size detection device provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram of the structure of another battery size detection device provided in an embodiment of the present application.

[0041] In the drawings, the figures are not necessarily drawn to scale.

[0042] Description of reference numerals:

[0043] 10-Battery size detection device;

[0044] 11-supporting part; 11a-supporting plane; 111-bracket; 112-second slide rail; 113-testing platform; 114-leveling member;

[0045] 12-pressing portion; 12a-first plane;

[0046] 13-weight assembly; 131-flexible member; 1311-wire rope; 132-weight member; 1321-weight; 1322-weight plate; 133-support member; 1331-pulley block;

[0047] 14- distance detection unit;

[0048] 15-force measuring unit; 151-tension sensor;

[0049] 16- Protective cover;

[0050] 17-first driving mechanism; 171-cylinder;

[0051] 18- first slide rail;

[0052] 19-second driving mechanism; 191-motor; 192-nut; 193-screw;

[0053] 20-battery;

[0054] X-first direction; G-gravity direction. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0057] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0058] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0060] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0061] The battery described in the application embodiments may be a battery cell, a battery module, or a battery pack, etc.

[0062] Optionally, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0063] Optionally, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0064] The box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the floor of the vehicle, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0065] The battery cell may be a secondary battery, which refers to a battery cell that can be continuously used by activating the active material by charging after the battery cell is discharged.

[0066] The battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.

[0067] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0068] After the battery is manufactured, it is usually necessary to test the battery's dimensions, such as thickness, and compare the actual values ​​with the designed values ​​to determine whether the dimensions of the produced battery are qualified. During the battery size detection process, a certain amount of pressure needs to be applied to the battery to improve the accuracy of the battery size detection, and different specifications of batteries have different pressure requirements.

[0069] However, in the related art, the same battery size detection device is usually used to detect the sizes of batteries of multiple specifications, and the weight of its own pressing part is used to apply pressure to the battery. This may easily cause a deviation between the detected battery size and the actual size of the battery, that is, it may easily cause the problem of low accuracy of the detected battery size.

[0070] In view of this, if Figure 1 and Figure 2 As shown, the embodiment of the present application provides a battery size detection device 10 including a support portion 11, a pressing portion 12, a counterweight assembly and a distance detection unit 14. The support portion 11 has a support plane 11a, and the support plane 11a is used to place the battery 20. The pressing portion 12 is arranged above the support plane 11a along the gravity direction G. The pressing portion 12 can move relative to the support plane 11a along the gravity direction G. The pressing portion 12 has a first plane 12a, which is arranged opposite to the support plane 11a along the gravity direction G and is used to fit the surface of the battery 20. The counterweight assembly 13 includes a flexible member 131, a counterweight 132 and a support member 133. The flexible member 131 is wound around the support member 133. One end of the flexible member 131 is connected to the pressing portion 12, and the other end is connected to the counterweight 132. The distance detection unit 14 is used to detect the distance between the support plane 11 a and the first plane 12 a along the gravity direction G.

[0071] The support portion 11 has a support plane 11 a , and the battery 20 is placed on the support plane 11 a . The support plane 11 a may be parallel to a horizontal plane and provide support for the battery 20 .

[0072] The pressing part 12 has a first plane 12a, and the first plane 12a and the supporting plane 11a are arranged opposite to each other along the gravity direction G. Then, the first plane 12a and the supporting plane 11a can be parallel to each other and respectively fit with two opposite surfaces of the battery 20 along the gravity direction G. The pressing part 12 is arranged above the supporting plane 11a along the gravity direction G and can move along the gravity direction G. Then, according to the different specifications or sizes of the battery 20 to be tested in different directions, the position of the pressing part 12 relative to the supporting plane 11a along the gravity direction G can be adjusted, so that the first plane 12a can fit with the surfaces of batteries 20 of different specifications.

[0073] Optionally, the pressing portion 12 may be a plate-like structure with a certain weight, such as a marble plate, a ceramic plate, or an acrylic plate.

[0074] The flexible member 131 of the counterweight assembly 13 may be a structure such as a steel wire rope 1311, a hemp rope or a cloth strip. The flexible member 131 is wound around the support member 133, and the support member 133 can provide a certain supporting force for the flexible member 131 to change the direction of the force at both ends of the flexible member 131. Exemplarily, the support member 133 may include a fulcrum, the flexible member 131 is wound around the fulcrum, and both ends extend downward along the gravity direction G respectively.

[0075] One end of the flexible member 131 is connected to the pressing portion 12, and the other end is connected to the counterweight 132. In this way, the difference between the gravity of the pressing portion 12 itself and the gravity of the counterweight 132 is close to the pressure of the pressing portion 12 on the battery 20, that is, the pressure of the pressing portion 12 on the battery 20 can be balanced by the counterweight 132, and the value of the pressure of the pressing portion 12 on the battery 20 can be adjusted by adjusting the specific gravity value of the counterweight 132, so that the pressure on the battery 20 is closer to the expected value. The counterweight 132 may include a weight 1321, etc.

[0076] The distance detection unit 14 is used to detect the distance between the supporting plane 11a and the first plane 12a along the gravity direction G. Since the supporting plane 11a and the first plane 12a are respectively in contact with the surfaces on both sides of the battery 20 along the gravity direction G, the distance between the first plane 12a and the supporting plane 11a along the gravity direction G can be the size of the battery 20 along the gravity direction G.

[0077] Optionally, the distance detection unit 14 can directly detect the distance between the supporting plane 11a and the first plane 12a, or the distance detection unit 14 can also detect the moving distance of the pressing part 12 along the gravity direction G. According to the moving distance of the pressing part 12 along the gravity direction G, combined with the initial distance between the first plane 12a and the supporting plane 11a, the distance between the first plane 12a and the supporting plane 11a is calculated. In this way, the distance between the first plane 12a and the supporting plane 11a along the gravity direction G can also be obtained.

[0078] Specifically, in the process of measuring the size of the battery 20, the battery 20 can be placed on the support plane 11a first, and the appropriate size of the counterweight 132 can be set as needed, and then the pressing part 12 can be moved along the gravity direction G so that the first plane 12a is in contact with the surface of the battery 20. At this time, the pressure of the pressing part 12 on the battery 20 can be regarded as the difference between the gravity of the pressing part 12 itself and the gravity of the counterweight 132, and the specific weight of the counterweight 132 can be reasonably set as needed. Then, the distance between the first plane 12a and the support plane 11a is the size of the battery 20 along the gravity direction G.

[0079] The battery size detection device 10 provided in the embodiment of the present application is provided with a counterweight assembly 13 including a flexible member 131, a counterweight member 132 and a support member 133. The flexible member 131 is wound around the support member 133 and connects the counterweight member 132 and the pressing portion 12, so that a part of the gravity of the pressing portion 12 is balanced by the gravity of the counterweight member 132, and the pressure of the pressing portion 12 on the battery 20 can be adjusted by adjusting the gravity of the counterweight member 132, so that the pressure of the pressing portion 12 on the battery 20 is closer to the expected value. During the process of detecting the size of the battery 20, the battery 20 is subjected to appropriate pressure, which is beneficial to improving the accuracy of the size detection of the battery 20.

[0080] In some embodiments, Figure 2 As shown, the battery size detection device 10 further includes a force measuring unit 15 , which is connected to the flexible member 131 and is used to measure the force borne by the flexible member 131 .

[0081] Optionally, the force measuring unit 15 may be a force sensor or a spring dynamometer or the like.

[0082] The value of the tension borne by the flexible member 131 can be the difference between the gravity of the pressing part 12 and the gravity of the counterweight 132. By detecting the tension borne by the flexible member 131 through the force measuring unit 15, the specific value of the pressure borne by the battery 20 can be read more intuitively and accurately.

[0083] In this way, it is convenient for the operator to adjust the weight of the counterweight 132 as needed, so that the pressure of the pressing part 12 on the battery 20 is closer to the expected value, which is beneficial to further improve the accuracy of battery 20 size detection and improve the efficiency of battery 20 size detection.

[0084] In some embodiments, the force measuring unit 15 includes a tension sensor 151 , and the tension sensor 151 is serially connected to the flexible member 131 .

[0085] The tension sensor 151 measures the tension of the flexible member 131 more accurately, and the tension sensor 151 has a simple structure and is easy to read, which is beneficial to further improve the accuracy of battery 20 size detection and is beneficial to further improve the efficiency of battery 20 size detection.

[0086] In some embodiments, Figure 1 and Figure 2 As shown, the support member 133 includes a pulley set 1331 , and the flexible member 131 is wound around the pulley set 1331 .

[0087] The pulley block 1331 may include one or two pulleys, and the specific number of pulleys in the pulley block 1331 may be set as needed. By setting the flexible member 131 to be wound around the pulley block 1331, after the flexible member 131 passes through the pulley block 1331, the flexible member 131 may convert the downward pulling force of the counterweight member 132 on the flexible member 131 along the gravity direction G into the upward pulling force of the flexible member 131 on the pressing portion 12 along the gravity direction G, and the friction force of the pulley block 1331 on the flexible member 131 is small, and the difference between the gravity of the pressing portion 12 and the gravity of the counterweight member 132 is closer to the actual pressure of the pressing portion 12 borne by the battery 20, which is conducive to further improving the accuracy of the battery 20 size detection on the premise of achieving the balance of the gravity of the counterweight member on the pressing portion 12.

[0088] In some embodiments, the battery size detection device 10 further includes a force measuring unit 15 , which is connected to the flexible member 131 between the pulley block 1331 and the pressing portion 12 and is used to measure the force borne by the flexible member 131 .

[0089] It is understandable that when the flexible member 131 is wound around the pulley block 1331, the pulley block 1331 generates friction force on the flexible member 131. By connecting the force measuring unit 15 to the flexible member 131 between the pulley block 1331 and the pressing part 12, the measured pulling force of the flexible member 131 is closer to the actual value of the pressure of the pressing part on the battery 20, which is conducive to further improving the accuracy of the battery 20 size detection.

[0090] In some embodiments, Figure 1 and Figure 2 As shown, the flexible member 131 includes a steel wire rope 1311 .

[0091] The steel wire rope 1311 has a relatively strong structural strength, which is beneficial to improving the reliability of the flexible member 131 and reducing the risk of the flexible member 131 breaking.

[0092] In some embodiments, the distance detection unit 14 includes a distance sensor or a micrometer.

[0093] The distance sensor and the micrometer have high measurement accuracy and are easy to read, which is beneficial to improving the accuracy of battery 20 size detection and improving the efficiency of battery 20 size detection.

[0094] In some embodiments, Figure 1 and Figure 2 As shown, the counterweight 132 includes a weight 1321 and a weight plate 1322 , and the weight 1321 is placed on the weight plate 1322 .

[0095] The weight of the weight 1321 is usually fixed, and a plurality of weights 1321 of different weights can be configured. The weight 1321 is placed on a weight plate 1322 to facilitate the taking and placement of the weight 1321. This facilitates the adjustment of the total weight of the counterweight 132, which is beneficial to further improve the efficiency of the battery 20 size detection.

[0096] In some embodiments, Figure 1 and Figure 3 As shown, the battery size detection device 10 further includes a protective cover 16 , and the support portion 11 , the pressing portion 12 , the counterweight assembly 13 and the distance detection unit 14 are disposed inside the protective cover 16 .

[0097] The protective cover 16 may be open or semi-open, and may be in the form of a shell, and may be arranged outside other related structures of the battery size detection device 10. The protective cover 16 may reserve an inlet and outlet for the battery 20, so that the battery 20 may enter and exit the protective cover 16 through the inlet and outlet of the battery 20. By providing the protective cover 16, a certain protection effect can be provided for other structures of the battery size detection device 10.

[0098] It is understandable that the downward movement of the pressing part 12 along the gravity direction G may be driven by its own gravity, while the upward movement of the pressing part 12 along the gravity direction G may be driven by an external force or an external driving mechanism.

[0099] In some embodiments, Figure 1 and Figure 2 As shown, the battery size detection device 10 further includes a first driving mechanism 17 , which is connected to the pressing portion 12 and is used to drive the pressing portion 12 to move along the gravity direction G.

[0100] The first driving mechanism 17 and the pressing portion 12 may be connected via an intermediate connecting piece, or the first driving mechanism 17 and the pressing portion 12 may be directly connected.

[0101] The first driving mechanism 17 can only drive the pressing part 12 to move upward along the gravity direction G, or the first driving mechanism 17 can drive the pressing part 12 to move upward along the gravity direction G and can also drive the pressing part 12 to move downward along the gravity direction G.

[0102] The first driving mechanism 17 may include a motor 191 , a hydraulic cylinder or a pneumatic cylinder 171 , and the like.

[0103] The first driving mechanism 17 is connected to the pressing part 12 so that the pressing part 12 can be driven by the first driving mechanism 17 to move along the gravity direction G, thereby measuring the size of the battery 20 more conveniently and labor-savingly.

[0104] In some embodiments, Figure 1 and Figure 2 As shown, the first driving mechanism 17 includes a cylinder 171 , and a piston of the cylinder 171 is connected to the pressing portion 12 .

[0105] The piston of the cylinder 171 is connected to the pressing part 12. Optionally, the piston of the cylinder 171 can be directly connected to the pressing part 12, or indirectly connected. Exemplarily, the piston of the cylinder 171 is connected to the pressing part 12 through a steel wire rope 1311. When the pressing part 12 moves downward along the gravity direction G, the pressing part 12 drives the piston to move downward under the action of its own gravity. When the pressing part 12 needs to move upward along the gravity direction G, the cylinder 171 drives the pressing part 12 to move upward along the gravity direction G, and so on, and the size of different batteries 20 is detected.

[0106] The first driving mechanism 17 includes a cylinder 171 . The cylinder 171 has a simple structure and high reliability. It is cleaner and more hygienic during use, which is beneficial to meeting the cleanliness requirements of the battery 20 production space.

[0107] It is understandable that two switch buttons arranged at intervals may be provided on the protective cover 16 to control the operation of the first drive mechanism 17. When the two switch buttons arranged at intervals are pressed simultaneously, the first drive mechanism 17 can work, which is helpful to reduce the risk of workers' misoperation.

[0108] In some embodiments, Figure 1 and Figure 2 As shown, the battery size detection device 10 includes a first slide rail 18 , which is supported by the support portion 11 and extends a preset distance along the gravity direction G. The pressing portion 12 is slidably connected to the first slide rail 18 .

[0109] The first slide rail 18 can provide a certain guiding effect for the movement of the pressing part 12 along the gravity direction G, which is beneficial to improving the smoothness of the movement of the pressing part 12 along the gravity direction G.

[0110] In some embodiments, Figure 1 , Figure 2 and Figure 3 As shown, the support portion 11 includes a bracket 111, a second slide rail 112 and a test platform 113, wherein the second slide rail 112 is supported on the bracket 111. The test platform 113 has a support plane 11a, and the test platform 113 is slidably connected to the second slide rail 112 and can move relative to the second slide rail 112 along a first direction X, wherein the first direction X intersects with the gravity direction G.

[0111] The first direction X intersects with the gravity direction G. Exemplarily, the first direction X may be perpendicular to the gravity direction G, and the first direction X may be set along the horizontal direction.

[0112] If the test platform 113 has a support plane 11a, the test platform 113 can be used to place the battery 20. If the test platform 113 is slidably connected to the second slide rail 112, the test platform 113 can be moved along the first direction X to be opposite to the pressing portion 12, or to be misaligned with the pressing portion 12. In the case where the test platform 113 is misaligned with the pressing portion 12, the battery 20 can be placed on the test platform 113, and then the test platform 113 is moved so that the support plane 11a is arranged opposite to the first plane 12a. After completing the size detection of the battery 20, the test platform 113 can be moved out again to facilitate the removal of the battery 20 from the test platform 113 and the placement of a new battery 20 on the test platform 113.

[0113] Therefore, such a configuration makes it easy to take or place the battery 20 , which is beneficial to further improve the efficiency of the battery 20 size detection.

[0114] In some embodiments, Figure 1 and Figure 2 As shown, the support portion 11 further includes at least three leveling members 114 . The at least three leveling members 114 are disposed at the bottom of the support 111 . The leveling members 114 are configured to be able to adjust their own dimensions along the gravity direction G.

[0115] Optionally, the support portion 11 may include three, four or more leveling members 114 . For example, four leveling members 114 may be provided at four corners of the support 111 .

[0116] In this way, the dimension of the leveling member 114 in the gravity direction G can be adjusted so that the supporting plane 11 a is set as horizontally as possible, which is beneficial to further improve the accuracy of the battery 20 size detection.

[0117] In some embodiments, Figure 1 and Figure 2 As shown, the battery size detection device 10 also includes a second driving mechanism 19, which includes a motor 191, a nut 192 and a screw 193, the screw 193 is connected to the output shaft of the motor 191, the nut 192 is threadedly connected to the screw 193, and is connected to the test platform 113.

[0118] Through the cooperation of the lead screw 193 and the nut 192, the rotation of the lead screw 193 is converted into the translation of the test platform 113, so that the movement of the test platform 113 along the first direction X can be achieved more conveniently and labor-savingly.

[0119] In some embodiments, the battery size detection device 10 provided in the embodiments of the present application includes a support portion 11, a pressing portion 12, a counterweight assembly 13, a force measuring unit 15, a distance detection unit 14, a first slide rail 18, a first driving mechanism 17 and a second driving mechanism 19. The support portion 11 includes a bracket 111, a second slide rail 112, a test platform 113 and at least three leveling members 114. The second slide rail 112 is supported on the bracket 111. The test platform 113 has a support plane 11a. The test platform 113 is slidably connected to the second slide rail 112 and can move relative to the second slide rail 112 along a first direction X, and the first direction X intersects with the gravity direction G. At least three leveling members 114 are provided at the bottom of the bracket 111, and the leveling members 114 are configured to be able to adjust their own dimensions along the gravity direction G. The first slide rail 18 is extended along the gravity direction G by a preset distance, the pressing part 12 is slidably connected with the first slide rail 18, and is arranged above the support plane 11a along the gravity direction G, the pressing part 12 can move relative to the support plane 11a along the gravity direction G, and the pressing part 12 has a first plane 12a, the first plane 12a is arranged opposite to the support plane 11a along the gravity direction G, and is used to fit with the surface of the battery 20. The counterweight assembly 13 includes a steel wire rope 1311, a weight 1321, a weight plate 1322 and a pulley block 1331, the steel wire rope 1311 is wound around the pulley block 1331, one end of the steel wire rope 1311 is connected to the pressing part 12, and the other end is connected to the weight plate 1322, and the distance detection unit 14 includes a distance sensor, and is used to detect the distance between the support plane 11a and the first plane 12a along the gravity direction G. The force measuring unit 15 includes a tension sensor 151, and is connected in series to the wire rope 1311. The protective cover 16 is arranged on the outside of the support part 11, the pressing part 12, the counterweight assembly 13, the first driving mechanism 17-the second driving mechanism 19 and the distance detection unit 14. The first driving mechanism 17 includes a cylinder 171, the piston of the cylinder 171 is connected to the pressing part 12, and is used to drive the pressing part 12 to move along the gravity direction G. The second driving mechanism 19 includes a motor 191, a nut 192 and a screw 193, the screw 193 is connected to the output shaft of the motor 191, the nut 192 is threadedly connected to the screw 193, and is connected to the test platform 113.

[0120] The battery size detection device 10 provided in the embodiment of the present application is provided with a counterweight assembly 13 including a flexible member 131, a counterweight 132 and a support member 133. The flexible member 131 is wound around the support member 133 and connects the counterweight 132 and the pressing portion 12, so that a part of the gravity of the pressing portion 12 is balanced by the gravity of the counterweight 132, and the pressure of the pressing portion 12 on the battery 20 can be adjusted by adjusting the gravity of the counterweight 132, so that the pressure of the pressing portion 12 on the battery 20 is closer to the expected value. During the process of detecting the size of the battery 20, the battery 20 is subjected to appropriate pressure, which is beneficial to improving the accuracy of the size detection of the battery 20.

[0121] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery size detection device, characterized in that: include: A support portion having a support plane, wherein the support plane is used to place a battery; A pressing portion is disposed above the support plane along the gravity direction, the pressing portion can move relative to the support plane along the gravity direction, the pressing portion has a first plane, the first plane is disposed opposite to the support plane along the gravity direction, and is used to fit with the surface of the battery; A counterweight assembly, comprising a flexible member, a counterweight member and a support member, wherein the flexible member is wound around the support member, one end of the flexible member is connected to the pressing portion, and the other end is connected to the counterweight member; and, A distance detection unit is used to detect the distance between the support plane and the first plane along the gravity direction.

2. The battery size detection device according to claim 1, characterized in that: The battery size detection device further comprises a force measuring unit, which is connected to the flexible member and is used to measure the force borne by the flexible member.

3. The battery size detection device according to claim 2, characterized in that: The force measuring unit comprises a tension sensor which is connected in series to the flexible member.

4. The battery size detection device according to claim 1, characterized in that: The supporting member comprises a pulley block, and the flexible member is wound around the pulley block.

5. The battery size detection device according to claim 4, characterized in that: The battery size detection device further comprises a force measuring unit, which is connected to the flexible member between the pulley block and the pressing portion and is used to measure the force borne by the flexible member.

6. The battery size detection device according to any one of claims 1 to 5, characterized in that: The battery size detection device further includes a first driving mechanism, which is connected to the pressing portion and is used to drive the pressing portion to move along the gravity direction.

7. The battery size detection device according to any one of claims 1 to 5, characterized in that: The battery size detection device further includes a first slide rail, which is supported by the support portion and extends a preset distance along the gravity direction, and the pressing portion is slidably connected to the first slide rail.

8. The battery size detection device according to any one of claims 1 to 5, characterized in that: The support portion comprises: Bracket; A second slide rail is supported on the bracket; and The test platform has the support plane, the test platform is slidably connected to the second slide rail, and can move relative to the second slide rail along a first direction, and the first direction intersects with the gravity direction.

9. The battery size detection device according to claim 8, characterized in that: The support portion further comprises at least three leveling members, which are arranged at the bottom of the bracket, and the leveling members are configured to be able to adjust their own dimensions along the direction of gravity.

10. The battery size detection device according to claim 8, characterized in that: The battery size detection device also includes a second driving mechanism, which includes a motor, a nut and a lead screw. The lead screw is connected to the output shaft of the motor, and the nut is threadedly connected to the lead screw and connected to the test platform.

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