Deviation correction system for liquid injection hole and anti-explosion valve, battery production line and battery

Abstract

The utility model provides a correction system for a liquid injection hole and an anti-explosion valve, a battery production line and a battery, and belongs to the technical field of batteries. The liquid injection hole and anti-explosion valve deviation rectifying system comprises a measuring module and a deviation rectifying module. The measuring module is positioned on at least one side of the battery conveying line and is used for determining a deviation angle of a liquid injection hole and an anti-explosion valve on the battery to be tested; the deviation rectifying module is located on the downstream side of the measuring module and used for adjusting the position of the liquid injection hole and / or the anti-explosion valve so that the deviation angle of the liquid injection hole and the anti-explosion valve can meet the target angle. According to the liquid injection hole and anti-explosion valve deviation correction system, the measurement module is used for measuring the deviation angle of the liquid injection hole and the anti-explosion valve on the battery to be tested, the deviation correction module can adjust the position of the liquid injection hole and / or the anti-explosion valve according to the measurement result of the measurement module, and the deviation angle of the liquid injection hole and the anti-explosion valve is corrected; and the deviation angle of the liquid injection hole and the anti-explosion valve meets the target angle, so that the production precision and the yield of the battery are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a liquid injection hole and explosion-proof valve deviation correction system, a battery production line and a battery. BACKGROUND

[0002] In the matching process of cylindrical batteries, if the deviation angle of the liquid injection hole and the explosion-proof valve is too large, the explosion-proof valve will be blocked by the mounting bracket during the assembly of the battery cell module, and cannot normally open the valve to release pressure, resulting in a large safety risk.

[0003] However, in the related art, there is no unified standard for the deviation angle of the liquid injection hole and the explosion-proof valve, and the deviation angle of the liquid injection hole and the explosion-proof valve is usually arranged by controlling the welding angle of the positive and negative current collecting plates of the battery cell. There are problems of poor control precision and low yield. Utility model content

[0004] The application provides a liquid injection hole and explosion-proof valve deviation correction system, a battery production line and a battery, which can solve the problem of poor control precision and low yield of the deviation angle of the liquid injection hole and the explosion-proof valve in the related art.

[0005] The technical solution is as follows:

[0006] On the one hand, a liquid injection hole and explosion-proof valve deviation correction system is provided, which comprises a measurement module and a deviation correction module.

[0007] The measurement module is located on at least one side of a battery conveying line, and is used to determine the deviation angle of a liquid injection hole and an explosion-proof valve on a battery to be tested.

[0008] The deviation correction module is located on the downstream side of the measurement module, and is used to adjust the position of the liquid injection hole and / or the explosion-proof valve, so that the deviation angle of the liquid injection hole and the explosion-proof valve meets a target angle.

[0009] In some embodiments, the measurement module comprises at least one first image sensor and a control unit, the at least one first image sensor is respectively electrically connected with the control unit, the at least one first image sensor is used to respectively acquire images of the liquid injection hole and the explosion-proof valve, and the control unit is used to determine the deviation angle of the liquid injection hole and the explosion-proof valve.

[0010] In some embodiments, the battery to be tested comprises a first battery cover plate and a second battery cover plate, the first battery cover plate and the second battery cover plate are respectively located at the axial two ends of the battery to be tested, the liquid injection hole is located on the first battery cover plate, and the explosion-proof valve is located on the second battery cover plate.

[0011] The number of the first image sensors is two, and the two first image sensors are arranged at two axial ends of the battery to be tested respectively, and are used for collecting images of the first battery cover plate and the second battery cover plate respectively.

[0012] In some embodiments, the control unit is configured to determine a first line of intersection between the center of the first battery cover plate and the center of the liquid injection hole, and determine a first included angle between the first line of intersection and a plumb line;

[0013] determine a second line of intersection between the center of the second battery cover plate and the center of the explosion-proof valve, and determine a second included angle between the second line of intersection and the plumb line;

[0014] determine a deviation angle of the liquid injection hole and the explosion-proof valve according to an absolute value of a difference between the first included angle and the second included angle.

[0015] In some embodiments, the control unit is further configured to compare the deviation angle with a target angle, and output a first instruction indicating that no correction is needed when the deviation angle is less than or equal to the target angle, and output a second instruction indicating that correction is needed when the deviation angle is greater than the target angle.

[0016] In some embodiments, the target angle ranges from 0 to 10 degrees.

[0017] In some embodiments, the correction module comprises a jaw mechanism and a rotating mechanism, and the jaw mechanism comprises a base, three movable clamping blocks and a pre-tightening push rod.

[0018] The three movable clamping blocks are arranged on the base in a circumferential direction, the pre-tightening push rod is located between the three movable clamping blocks, and the base is connected with the rotating mechanism.

[0019] In some embodiments, the correction module further comprises a lifting mechanism and a feeding mechanism, the lifting mechanism is connected with the feeding mechanism, and the jaw mechanism is connected with the lifting mechanism.

[0020] In another aspect, a battery production line is provided, and the battery production line comprises the liquid injection hole and explosion-proof valve correction system.

[0021] In another aspect, a battery is provided, and the battery is processed by the battery production line.

[0022] The technical scheme provided by the application has at least the following beneficial effects:

[0023] The liquid injection hole and explosion-proof valve deviation correction system of the application is provided with a measuring module on one side of a battery conveying line, which can measure the deviation angle of the liquid injection hole and the explosion-proof valve on a battery to be tested, and a deviation correction module is arranged downstream of the measuring module, which can adjust the position of the liquid injection hole and / or the explosion-proof valve according to the measurement result of the measuring module, correct the deviation angle of the liquid injection hole and the explosion-proof valve, so that the deviation angle of the liquid injection hole and the explosion-proof valve meets the target angle, thereby improving the production precision and yield of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 is a structural schematic diagram of the liquid injection hole and explosion-proof valve deviation correction system provided by the application;

[0026] Figure 2 is a structural schematic diagram of the battery to be tested and the measuring module provided by the application;

[0027] Figure 3 is a structural schematic diagram of the battery to be tested provided by the application Figure 1 ;

[0028] Figure 4 is a structural schematic diagram of the battery to be tested provided by the application Figure 2 ;

[0029] Figure 5 is a structural schematic diagram of the first battery cover plate provided by the application;

[0030] Figure 6 is a structural schematic diagram of the second battery cover plate provided by the application;

[0031] Figure 7 is a structural schematic diagram of the deviation angle provided by the application;

[0032] Figure 8 is a structural schematic diagram of the deviation correction module provided by the application;

[0033] Figure 9 is a structural schematic diagram of the deviation correction module provided by another embodiment of the application;

[0034] Figure 10 is a structural schematic diagram of the jaw mechanism provided by the application;

[0035] Figure 11is a structural schematic diagram of a detection module provided by an embodiment of the present application.

[0036] The reference signs in the drawings are respectively represented as:

[0037] 100, a battery to be tested;

[0038] 1001, a first battery cover plate; 1002, a second battery cover plate;

[0039] 100a, a liquid injection hole; 100b, an explosion-proof valve;

[0040] 001, a first line of centers; 002, a second line of centers; 003, a plumb line;

[0041] 1, a measurement module;

[0042] 11, a first image sensor; 12, a control unit; 13, a light supplement lamp;

[0043] 2, a deviation rectification module;

[0044] 21, a clamping jaw mechanism; 211, a base piece; 212, a movable clamping block; 213, a pre-tightening push rod; 22, a lifting mechanism; 23, a feeding mechanism; 231, a first feeding mechanism; 232, a second feeding mechanism; 24, a pressing mechanism; 25, a rotating mechanism;

[0045] 3, a detection module;

[0046] 31, a second image sensor. DETAILED DESCRIPTION

[0047] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar elements, unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. Figure 1 The orientation or positional relationship shown is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0049] It should be understood that, in the present application, "connected", "connected" can refer to a mechanical connection relationship or a physical connection relationship, that is, A and B are connected or A and B are connected, which means that there is a fastening member (such as a screw, a bolt, a rivet, etc.) between A and B, or A and B are in contact with each other and A and B are difficult to be separated.

[0050] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by one of ordinary skill in the art.

[0051] In order to make the purposes, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0052] In one aspect, in combination with Figure 1 As shown in the drawings, the present embodiment provides a liquid injection hole 100a and explosion-proof valve 100b deviation correction system, which comprises a measurement module 1 and a deviation correction module 2.

[0053] The measurement module 1 is located on at least one side of the battery conveying line (not shown in the figure), which is used to determine the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b on the battery 100 to be tested; the deviation correction module 2 is located on the downstream side of the measurement module 1, and the deviation correction module 2 is used to adjust the position of the liquid injection hole 100a and / or the explosion-proof valve 100b, so that the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b meets the target angle.

[0054] The liquid injection hole 100a and explosion-proof valve 100b deviation correction system of the present embodiment is arranged with the measurement module 1 on one side of the battery conveying line, which can measure the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b on the battery 100 to be tested, and the deviation correction module 2 is arranged downstream of the measurement module 1, which can adjust the position of the liquid injection hole 100a and / or the explosion-proof valve 100b according to the measurement result of the measurement module 1, and correct the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b, so that the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b meets the target angle, thereby improving the production accuracy and yield of the battery.

[0055] In some possible implementations, with reference to Figure 3 and Figure 4 As shown in the drawings, the battery 100 to be tested comprises a cylindrical shell, an electric core, a first battery cover plate 1001 and a second battery cover plate 1002, both ends of the shell are open, the electric core is located in the shell, and the first battery cover plate 1001 and the second battery cover plate 1002 are respectively covered on both ends of the shell. The positive electrode of the electric core is electrically connected to one of the first battery cover plate 1001 and the second battery cover plate 1002, and the positive electrode of the electric core is electrically connected to the other of the first battery cover plate 1001 and the second battery cover plate 1002.

[0056] One of the first battery cover plate 1001 and the second battery cover plate 1002 corresponds to the positive electrode of the battery to be tested 100, and the other of the first battery cover plate 1001 and the second battery cover plate 1002 corresponds to the negative electrode of the battery to be tested 100. Exemplarily, one of the liquid injection hole 100a and the explosion-proof valve 100b is located on the first battery cover plate 1001, and the other is located on the second battery cover plate 1002.

[0057] The deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b is the included angle between the connecting line of the liquid injection hole 100a and the center of the battery to be tested 100 and the connecting line of the explosion-proof valve 100b and the center of the battery to be tested 100 in the projection plane along the axial direction of the battery to be tested 100. The existence of this included angle not only facilitates the liquid injection operation, but also ensures that the explosion-proof valve 100b can be effectively opened to release pressure when the internal pressure of the battery abnormally rises. If the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b exceeds the target angle, when the position of the liquid injection hole 100a meets the liquid injection operation, the position of the explosion-proof valve 100b may not be aligned with the pressure relief channel of the battery and may be blocked by the mounting bracket, and when the position of the explosion-proof valve 100b is aligned with the pressure relief channel, the position of the liquid injection hole 100a may not be able to perform the liquid injection operation.

[0058] In addition, taking cylindrical lithium ion batteries as an example, a plurality of cylindrical lithium ion batteries are usually assembled in modules, and then a battery pack with larger capacity is formed for use. If the positions of the liquid injection hole 100a and the explosion-proof valve 100b of each cylindrical lithium ion battery are different, the battery pack assembled together cannot realize the automatic liquid injection and pressure relief structure design.

[0059] In some possible implementations, the liquid injection hole 100a is mainly used for injecting electrolyte into the battery during the production process of the battery. The electrolyte is a key component of the battery, which plays a role in ion transmission during the charging and discharging process of the battery, so that the battery can work normally. The amount of electrolyte injected can be accurately controlled through the liquid injection hole 100a, so as to ensure that the chemical system inside the battery is in the best state, thereby improving the performance and service life of the battery.

[0060] Exemplarily, there will be a sealing design around the liquid injection hole 100a, such as using a rubber plug or a metal sealing ring for sealing, so as to prevent electrolyte leakage.

[0061] In some possible implementations, the explosion-proof valve 100b is used to open in time when the pressure inside the battery rises sharply due to various abnormal conditions such as short circuit, overcharge, overheating, etc., to release the internal pressure and avoid the explosion of the battery shell due to bearing too high pressure, effectively protecting the personal safety and equipment safety of the user. By releasing the pressure in time, the internal structure of the battery is prevented from being damaged due to excessive pressure, such as electrode deformation, diaphragm rupture, etc., thereby protecting the performance of the battery to some extent and reducing the occurrence of irreversible damage to the battery due to high pressure.

[0062] Exemplarily, the battery explosion-proof valve 100b has various structural types, including a notch type explosion-proof valve 100b, a bursting disc type explosion-proof valve 100b, a safety valve type explosion-proof valve 100b, etc.

[0063] In combination with Figure 1 and Figure 2 , in some embodiments, the measurement module 1 includes at least one first image sensor 11 and a control unit 12, the at least one first image sensor 11 is respectively electrically connected with the control unit 12, the at least one first image sensor 11 is used to respectively collect images of the liquid injection hole 100a and the explosion-proof valve 100b, and the control unit 12 is used to determine the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b.

[0064] Through the above arrangement, the measurement module 1 can collect the images of the liquid injection hole 100a and the explosion-proof valve 100b by using the first image sensor 11, and then the control unit 12 can confirm the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b based on image recognition technology and image processing algorithm, etc. according to the images of the liquid injection hole 100a and the explosion-proof valve 100b. The measurement efficiency and measurement accuracy of the deviation angle are higher.

[0065] Exemplarily, the first image sensor 11 adopts a CCD, i.e., a Charge Coupled Device.

[0066] In some possible implementations, referring to Figure 2 , the measurement module 1 further includes at least one fill light, each first image sensor 11 can be respectively configured with at least one fill light, and the fill light can perform light filling when the first image sensor 11 collects the images of the liquid injection hole 100a and the explosion-proof valve 100b, thereby improving the collection quality of the images and further facilitating the identification accuracy and identification efficiency of the control unit 12.

[0067] Exemplarily, the fill light and the first image sensor 11 are connected one by one, and each first image sensor 11 is connected with one fill light.

[0068] In combination with Figure 3 , Figure 4 andFigure 5 As shown in some embodiments, the battery to be tested 100 includes a first battery cover plate 1001 and a second battery cover plate 1002, the first battery cover plate 1001 and the second battery cover plate 1002 are respectively located at the axial two ends of the battery to be tested 100, the liquid injection hole 100a is located on the first battery cover plate 1001, and the explosion-proof valve 100b is located on the second battery cover plate 1002.

[0069] The number of the first image sensors 11 is two, and the two first image sensors 11 are respectively arranged at the axial two ends of the battery to be tested 100, and are respectively used to collect the images of the first battery cover plate 1001 and the second battery cover plate 1002.

[0070] Through the above arrangement, the measurement module 1 can use the two first image sensors 11 to respectively collect the images of the first battery cover plate 1001 with the liquid injection hole 100a and the second battery cover plate 1002 with the explosion-proof valve 100b, and then determine the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b by the control unit 12 in combination with the two images.

[0071] Exemplarily, the first battery cover plate 1001 and the second battery cover plate 1002 are coaxially arranged.

[0072] In combination with Figure 5 , Figure 6 and Figure 7 As shown in some embodiments, the control unit 12 is configured to determine a first line of intersection 001 between the center of the first battery cover plate 1001 and the center of the liquid injection hole 100a, determine a first included angle between the first line of intersection 001 and the plumb line 003; and determine a second line of intersection 002 between the center of the second battery cover plate 1002 and the center of the explosion-proof valve 100b, determine a second included angle between the second line of intersection 002 and the plumb line 003; and determine the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b according to the absolute value of the difference between the first included angle and the second included angle.

[0073] Through the above arrangement, in order to simplify the recognition efficiency of the control unit 12 on the deviation angle, the control unit 12 confirms the first included angle between the first line of intersection corresponding to the liquid injection hole 100a and the plumb line, and the second included angle between the second line of intersection corresponding to the explosion-proof valve 100b and the plumb line, wherein the plumb line can be used as a reference standard, and the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b can be determined through simple mathematical operation, the recognition process is more simple and direct, which is conducive to improving the recognition efficiency and recognition accuracy of the deviation angle, and reducing the cost consumption and energy consumption of the control unit 12.

[0074] In some embodiments, the control unit 12 is further configured to compare the deviation angle with a target angle, and output a first instruction indicating that no deviation correction is needed when the deviation angle is less than or equal to the target angle, and output a second instruction indicating that deviation correction is needed when the deviation angle is greater than the target angle.

[0075] In this embodiment, the control unit 12 needs to determine whether the position of the liquid injection hole 100a and / or the explosion-proof valve 100b needs to be adjusted by the deviation correction module 2 according to the measurement result in addition to outputting the measurement result, thereby realizing a closed-loop system from measurement of the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b to deviation correction.

[0076] In some embodiments, the target angle is in the range of 0-10°. When the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b meets the above range, the battery to be measured can meet the production requirements and meet the scene requirements of liquid injection operation and explosion-proof pressure relief.

[0077] In combination with FIGS. 1-4, Figure 8 Figure 9 and Figure 10 In some embodiments, the deviation correction module 2 includes a jaw mechanism 21 and a rotating mechanism 25, and the jaw mechanism 21 includes a base member 211, three movable clamping blocks 212, and a pre-tightening push rod 213.

[0078] The three movable clamping blocks 212 are arranged on the base member 211 in a circumferential direction, and the pre-tightening push rod 213 is located between the three movable clamping blocks 212. The base member 211 is connected to the rotating mechanism 25.

[0079] Through the above arrangement, the deviation correction module 2 can coaxially clamp and fix the first battery cover plate 1001 or the second battery cover plate 1002 of the battery 100 to be tested by the three movable clamping blocks 212, and the pre-tightening push rod 213 can provide an axial pre-tightening force to the first battery cover plate 1001 or the second battery cover plate 1002, so that the first battery cover plate 1001 or the second battery cover plate 1002 is pressed on the cylindrical shell of the battery 100 to be tested. If the measurement module 1 confirms that the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b meets the target angle, the rotating mechanism 25 does not need to be started, and if the measurement module 1 confirms that the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b does not meet the target angle, the rotating mechanism 25 is started to drive the first battery cover plate 1001 or the second battery cover plate 1002 to rotate by a certain angle, adjust the position of the liquid injection hole 100a and / or the explosion-proof valve 100b, and reduce the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b.

[0080] For example, the rotating mechanism 25 is connected to the control unit 12 to receive the second instruction indicating that deviation correction is needed output by the control unit 12. ​

[0081] In some possible implementations, referring to Figure 9 As shown, the number of deviation rectifying modules 2 is two, one of which is arranged at one axial end of the battery 100 to be tested, and the clamping jaw mechanism 21 thereof is used to clamp and fix the first battery cover plate 1001, and the other of which is arranged at the other axial end of the battery 100 to be tested, and the clamping jaw mechanism 21 thereof is used to clamp and fix the second battery cover plate 1002.

[0082] The two deviation rectifying modules 2 can be electrically connected with the control unit 12 respectively, and the control unit 12 can output corresponding second instructions to the rotating mechanism 25 in each deviation rectifying module 2. For example, when the first included angle corresponding to the liquid injection hole 100a is less than 5°, but the second included angle corresponding to the explosion-proof valve 100b is greater than 5°, only the position of the explosion-proof valve 100b needs to be adjusted, and then the control unit 12 outputs a second instruction to the rotating mechanism 25 of the deviation rectifying module 2 corresponding to the second battery cover plate 1002. Or, when the first included angle corresponding to the liquid injection hole 100a is greater than 5°, and the second included angle corresponding to the explosion-proof valve 100b is also greater than 5°, the positions of the liquid injection hole 100a and the explosion-proof valve 100b need to be adjusted at the same time, and then the control unit 12 outputs second instructions to the rotating mechanism 25 of the deviation rectifying module 2 corresponding to the first battery cover plate 1001 and the rotating mechanism 25 of the deviation rectifying module 2 corresponding to the second battery cover plate 1002 respectively, and the rotation angles of the second instructions received by the two rotating structures can be the same or different.

[0083] In combination Figure 8 and Figure 9 As shown, in some embodiments, the deviation rectifying module 2 further comprises a lifting mechanism 22 and a feeding mechanism 23, the lifting mechanism 22 is connected with the feeding mechanism 23, and the clamping jaw mechanism 21 is connected with the lifting mechanism 22.

[0084] In this embodiment, the deviation rectifying module 2 can also have the lifting mechanism 22 and the feeding mechanism 23, and by using the lifting mechanism 22 and the feeding mechanism 23, the deviation rectifying module 2 can realize the lifting treatment of the first battery cover plate 1001 and the second battery cover plate 1002, so that the first battery cover plate 1001 and the second battery cover plate 1002 are accurately matched with the cylindrical shell respectively, and the accurate pre-welding treatment in the pre-welding station is facilitated.

[0085] For example, the feeding mechanism 23 comprises a first feeding mechanism 231 and a second feeding mechanism 232, and the working directions of the first feeding mechanism 231 and the second feeding mechanism 232 are perpendicular to each other, so that the deviation rectifying module 2 can realize the three-dimensional movement of the first battery cover plate 1001 and the second battery cover plate 1002 by using the first feeding mechanism 231, the second feeding mechanism 232 and the lifting mechanism 22, which is conducive to improving the working capacity of the deviation rectifying module 2.

[0086] In combinationFigure 9 As shown, in some embodiments, the deviation rectification module 2 further comprises a pressing mechanism 24, which is located between two deviation rectification modules 2, and can press the position of the cylindrical shell to prevent dislocation when the two deviation rectification modules 2 respectively perform the lifting treatment on the first battery cover plate 1001 and the second battery cover plate 1002.

[0087] In combination Figure 11 As shown, in some embodiments, the liquid injection hole 100a and explosion-proof valve 100b deviation rectification system further comprises a detection module 31 located on the downstream side of the deviation rectification module 2, which comprises at least one second image sensor 3111, which is respectively used to collect the deviation angle of the liquid injection hole 100a and the explosion-proof valve 100b of the battery 100 to be tested after being processed by the deviation rectification module 2, and detect whether the deviation rectification and lifting treatment of the deviation rectification module 2 has quality problems, further improving the product quality of the battery 100 to be tested.

[0088] On the other hand, the present embodiment provides a battery production line, which comprises the liquid injection hole 100a and explosion-proof valve 100b deviation rectification system of the present application.

[0089] The battery production line of the present embodiment adopts the liquid injection hole 100a and explosion-proof valve 100b deviation rectification system of the present application, and has all the beneficial technical effects of all the embodiments herein. Among them, the deviation angles of the liquid injection hole 100a and the explosion-proof valve 100b can all meet the target angle, thereby improving the production precision and yield of the battery.

[0090] On the other hand, the present embodiment provides a battery, which is produced and processed by the battery production line of the present application.

[0091] The battery of the present embodiment is processed by the battery production line of the present application, and has all the beneficial technical effects of all the embodiments herein. The deviation angles of the liquid injection hole and the explosion-proof valve in the battery can all meet the target angle, which can ensure the normal valve pressure relief of the battery and has high safety.

[0092] It should be pointed out that "several", "at least one" mentioned in the present text means one or more, "several", "at least two" means two or more. "And / or" describes the association between the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that there are three cases of A alone, A and B together, and B alone. The character " / " generally represents that the front and rear associated objects are in an "or" relationship.

[0093] In the description of the application, it is required to explain that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0094] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0095] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "lower", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0096] In the description of the present application, the description referring to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the described embodiments or examples are included in at least one embodiment or example of the present application.

[0097] The above is only the embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid injection port and explosion-proof valve correction system, characterized in that, The system includes: a measurement module (1) and a correction module (2); The measurement module (1) is located on at least one side of the battery delivery line and is used to determine the deviation angle between the liquid injection hole (100a) and the explosion-proof valve (100b) on the battery (100) to be tested; The correction module (2) is located downstream of the measurement module (1). The correction module (2) is used to adjust the position of the injection hole (100a) and / or the explosion-proof valve (100b) so that the deviation angle of the injection hole (100a) and the explosion-proof valve (100b) meets the target angle.

2. The liquid injection hole and explosion-proof valve correction system according to claim 1, characterized in that, The measurement module (1) includes at least one first image sensor (11) and a control unit (12). The at least one first image sensor (11) is electrically connected to the control unit (12). The at least one first image sensor (11) is used to acquire images of the injection hole (100a) and the explosion-proof valve (100b) respectively. The control unit (12) is used to determine the deviation angle between the injection hole (100a) and the explosion-proof valve (100b).

3. The liquid injection hole and explosion-proof valve correction system according to claim 2, characterized in that, The battery to be tested (100) includes a first battery cover plate (1001) and a second battery cover plate (1002). The first battery cover plate (1001) and the second battery cover plate (1002) are respectively located at the two ends of the axial direction of the battery to be tested (100). The liquid injection hole (100a) is located on the first battery cover plate (1001), and the explosion-proof valve (100b) is located on the second battery cover plate (1002). The number of the first image sensors (11) is two. The two first image sensors (11) are respectively arranged at both ends of the axial direction of the battery under test (100) and are used to acquire images of the first battery cover (1001) and the second battery cover (1002).

4. The liquid injection hole and explosion-proof valve correction system according to claim 3, characterized in that, The battery to be tested (100) also includes a cylindrical casing and a battery cell. The two ends of the casing are open, and the battery cell is located inside the casing. The first battery cover (1001) and the second battery cover (1002) cover the two ends of the casing respectively. The positive terminal of the battery cell is electrically connected to one of the first battery cover (1001) and the second battery cover (1002), and the positive terminal of the battery cell is electrically connected to the other of the first battery cover (1001) and the second battery cover (1002).

5. The liquid injection hole and explosion-proof valve correction system according to claim 3, characterized in that, The control unit (12) is used to determine the first connecting line (001) between the center of the first battery cover (1001) and the center of the injection hole (100a), and to determine the first included angle α1 between the first connecting line (001) and the vertical line (003); It is also used to determine the second connecting line (002) between the center of the second battery cover (1002) and the center of the explosion-proof valve (100b), and to determine the second included angle a2 between the second connecting line (002) and the vertical line (003); The deviation angle between the injection hole (100a) and the explosion-proof valve (100b) is determined based on the absolute value of the difference between the first included angle a1 and the second included angle a2.

6. The liquid injection hole and explosion-proof valve correction system according to claim 1, characterized in that, The target angle ranges from 0 to 10°.

7. The liquid injection hole and explosion-proof valve correction system according to any one of claims 1 to 6, characterized in that, The correction module (2) includes a gripper mechanism (21) and a rotating mechanism (25). The gripper mechanism (21) includes a base (211), three movable grippers (212), and a pre-tightening push rod (213). Three movable clamping blocks (212) are arranged circumferentially on the base member (211), and the pre-tightening push rod (213) is located between the three movable clamping blocks (212). The base member (211) is connected to the rotating mechanism (25).

8. The liquid injection hole and explosion-proof valve correction system according to claim 7, characterized in that, The correction module (2) further includes a lifting mechanism (22) and a feeding mechanism (23), wherein the lifting mechanism (22) is connected to the feeding mechanism (23) and the gripper mechanism (21) is connected to the lifting mechanism (22).

9. A battery production line, characterized in that, The battery production line includes the liquid injection hole and explosion-proof valve correction system as described in any one of claims 1 to 8.

10. A battery, characterized in that, The battery is manufactured using the battery production line described in claim 9.

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