Weighing equipment and battery production line

Abstract

The utility model is suitable for the technical field of battery production and manufacturing, and provides weighing equipment and a battery production line, the weighing equipment comprises a rack, a weighing mechanism, a first limiting mechanism, a second limiting mechanism and a first locking assembly, the weighing mechanism and the first limiting mechanism are both installed on the rack, the second limiting mechanism is slidably installed on the rack, and the first locking assembly is installed on the rack. The second limiting mechanism can move to be close to or away from the first limiting mechanism, the first locking assembly comprises a first rack and a first locking piece, the first rack is arranged on the rack and provided with a plurality of first tooth parts, and a first tooth groove is formed between every two adjacent first tooth parts; the first locking piece is provided with first positioning teeth; the first locking piece can move relative to the second limiting mechanism to be close to or away from the first rack; the first positioning teeth can be clamped in any first tooth groove. The weighing equipment provided by the utility model can adapt to various to-be-weighed objects with different sizes, and is high in compatibility.

Description

Technical Field

[0001] The present application relates to the technical field of battery production and manufacturing, and more specifically, to a weighing device and a battery production line. Background Art

[0002] With the popularity of new energy vehicles, the output of automotive power batteries is expanding year by year. There are many specifications of batteries for different usage requirements, and the sizes of batteries of different specifications are different. In the production process of batteries, it is often necessary to weigh the batteries. When weighing the batteries, the batteries need to be placed on the weighing instrument and the limit mechanism is used to limit the batteries.

[0003] However, when weighing batteries of different specifications continuously (i.e., during the model change process), the limiting mechanism needs to be manually disassembled and reinstalled to a position suitable for the battery to be weighed, which is complicated to operate and has low model change efficiency. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a weighing device, aiming to solve the technical problems of complex type change operation and low efficiency in the battery weighing process in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In a first aspect, a weighing device is provided, comprising:

[0007] frame;

[0008] A weighing mechanism is installed on the frame, and is used to weigh the object to be weighed;

[0009] A first limiting mechanism is installed on the frame;

[0010] A second limiting mechanism is slidably mounted on the frame, the second limiting mechanism is spaced apart from the first limiting mechanism, and the second limiting mechanism can move relative to the frame along a first direction to approach or move away from the first limiting mechanism;

[0011] The first locking assembly includes a first rack and a first locking member. The first rack is arranged on the frame. The first rack has a plurality of first tooth portions arranged in sequence along a first direction, and a first tooth groove is formed between adjacent first tooth portions. The first locking member has at least one first positioning tooth matching the first tooth groove. The first locking member is slidably assembled in the second limiting mechanism, and can move relative to the second limiting mechanism along the second direction to approach or move away from the first rack. The first positioning tooth can be locked in any first tooth groove.

[0012] The weighing device provided in the embodiment of the present application can be used to weigh the battery. In the process of weighing the battery, the battery is the object to be weighed, the battery is placed on the weighing mechanism, the first limiting mechanism and the second limiting mechanism are respectively located on both sides of the battery in the first direction to limit the battery, and the weighing mechanism weighs the battery. In the process of changing the type, the distance between the first limiting mechanism and the second limiting mechanism is adjusted according to the size of the next battery to be weighed in the first direction, so that the distance between the first limiting mechanism and the second limiting mechanism is adapted to the size of the next battery to be tested in the first direction. In the process of adjustment, the first locking member is moved relative to the second limiting mechanism in the second direction to move away from the first rack, thereby separating the first locking member from the first rack, and moving the second limiting mechanism in the first direction to adjust the distance between the second limiting mechanism and the first limiting mechanism. After the distance adjustment is completed, the first locking member is moved in the direction close to the first rack and extends into a first tooth groove of the first rack, thereby locking the first locking member with the first rack, that is, fixing the second limiting mechanism with the frame, so that the position adjustment process of the second limiting mechanism can be completed.

[0013] It can be seen from the above that the weighing equipment provided in the present application can unlock and fix the second limiting mechanism by moving the first locking member, which simplifies the adjustment process of the second limiting mechanism, simplifies the model change operation process, and improves the model change efficiency.

[0014] In a possible design, the first locking member includes a main body and an elastic member, the first positioning tooth is arranged on the main body, and the elastic member is arranged between the main body and the second limiting mechanism.

[0015] In the embodiment of the present application, the elastic member plays a resetting role on the main body, so that the resetting of the main body can be achieved automatically, further simplifying the operation process.

[0016] In a possible design, the second limiting mechanism is provided with a guide hole, the main body includes a lifting part and a locking part, the lifting part and the locking part are detachably connected, the elastic part is sleeved on the locking part or the lifting part, one end of the lifting part is located on one side of the guide hole, and the locking part is located on the other side of the guide hole.

[0017] In the embodiment of the present application, the lifting portion and the locking portion are detachably connected, which is convenient for sleeves of the elastic member on the locking portion or the lifting portion, and convenient for installation of the lifting portion and the locking portion on the second limiting mechanism.

[0018] In a possible design, a first scale is installed on the frame, the first scale is arranged along a first direction, and the second limiting mechanism is installed with a first indicator, and the first indicator is arranged opposite to the first scale.

[0019] In the embodiment of the present application, the provision of the first scale and the first indicator facilitates the clear movement position of the second limiting mechanism, thereby enabling the position of the second limiting mechanism to be adjusted more accurately.

[0020] In a possible design, the first limiting mechanism includes a first mounting frame, a first fixing member and a first moving member, the first mounting frame is mounted on the frame, the first fixing member is fixedly mounted on the first mounting frame, the first moving member and the first fixing member are spaced apart in the third direction, the first moving member is slidably mounted on the first mounting frame, and the first moving member can move along the third direction;

[0021] The second limiting mechanism includes a second mounting frame, a second fixed member and a second movable member. The second mounting frame is slidably assembled on the frame, the second fixed member is fixedly mounted on the second mounting frame, the second movable member and the second fixed member are spaced apart in a third direction, the second movable member is slidably assembled on the second mounting frame, and the second movable member can move along the third direction.

[0022] In the embodiment of the present application, the first movable member and the first fixed member cooperate, and the second movable member and the second fixed member cooperate to limit the position of the object to be weighed in the third direction. The positions of the first movable member and the second movable member can be adjusted to accommodate a variety of objects to be weighed with different sizes in the third direction.

[0023] In one possible design, the first mounting frame and the first movable member are connected via a second locking assembly, the second locking assembly includes a second rack and a second locking member, the second rack is arranged on the first mounting frame along a third direction, the second rack is provided with a plurality of second tooth grooves along the third direction, the second locking member has second positioning teeth matching the second tooth grooves, the second locking member is slidably assembled on the first movable member along the second direction, and the second positioning teeth can be locked in any second tooth groove.

[0024] In the embodiment of the present application, the provision of the second locking assembly simplifies the position adjustment operation of the first movable member and improves the efficiency of the position adjustment operation of the first movable member.

[0025] In a possible design, a second scale is arranged on the first mounting frame along the third direction, a second indicator is installed on the first movable member, and the second indicator points to the second scale.

[0026] In the embodiment of the present application, the provision of the second scale and the second indicator facilitates the clarification of the moving position of the first movable member, thereby enabling the position of the first movable member to be adjusted more accurately.

[0027] In one possible design, the second mounting frame and the second movable member are connected via a third locking assembly, the third locking assembly includes a third rack and a third locking member, the third rack is arranged on the second mounting frame along a third direction, the third rack is provided with a plurality of third tooth grooves along the third direction, the third locking member has a third positioning tooth matching the third tooth groove, the third locking member is slidably assembled on the second movable member along the second direction, and the third positioning tooth can be locked in any third tooth groove.

[0028] In the embodiment of the present application, the provision of the third locking assembly simplifies the position adjustment operation of the second movable member and improves the efficiency of the position adjustment operation of the second movable member.

[0029] In a possible design, a third scale is arranged on the second mounting frame along the third direction, a third indicator is installed on the second moving member, and the third indicator points to the third scale.

[0030] In the embodiment of the present application, the provision of the third scale and the third indicator facilitates the clarification of the moving position of the second movable member, thereby enabling the position of the second movable member to be adjusted more accurately.

[0031] In a possible design, a first lifting structure is installed on the frame, the first lifting structure is connected to the first mounting frame, and the first lifting structure is used to drive the first mounting frame to move along the second direction;

[0032] The second mounting frame includes a first plate and a second plate, the second fixing member and the second moving member are both mounted on the first plate, the second plate is mounted with a second lifting structure, the second lifting structure is connected to the first plate, and the second lifting structure is used to drive the first plate to move along the second direction.

[0033] The first lifting structure and the second lifting structure are arranged so that the first mounting frame and the first plate can move in the second direction, so that the first fixing member and the first moving member on the first mounting frame, and the second fixing member and the second moving member on the first plate can move in the second direction, so as to drive the object to be weighed to move in the second direction to approach or move away from the weighing mechanism. In this arrangement, the object to be weighed will contact the weighing mechanism for weighing operation only after the position limiting is completed, and the weighing accuracy is high.

[0034] In one possible design, the weighing mechanism is slidably mounted on a frame, the weighing mechanism can move in a first direction relative to the frame, the weighing mechanism is installed with a fourth locking member, the fourth locking member has at least one first positioning tooth matching the first tooth groove, the fourth locking member can move in a second direction relative to the weighing mechanism to approach or move away from the first rack, so that the fourth positioning tooth can be locked in any first tooth groove.

[0035] In the embodiment of the present application, the weighing mechanism can be adjusted in position and fixed to the frame by the fourth locking member. With such arrangement, the position adjustment operation of the weighing mechanism is convenient and the weighing accuracy can be improved.

[0036] In a possible design, the weighing equipment also includes a control mechanism, an alarm mechanism and multiple first sensors. The multiple first sensors are arranged on the frame at intervals along the first direction. A first trigger member is installed on the second limiting mechanism. The first trigger member can trigger any first sensor. The control mechanism is communicated with the multiple first sensors and the alarm mechanism respectively. The control mechanism is used to control the alarm mechanism to send a warning signal when the first trigger member matching the object to be weighed is not triggered.

[0037] In the embodiment of the present application, if the second limiting mechanism fails to move into place, the second limiting mechanism cannot trigger the first sensor that matches the object to be weighed, and the alarm mechanism can send a warning signal to prompt the operator.

[0038] In a possible design, the rack is provided with a first slide groove along the first direction, and each first sensor is slidably assembled in the first slide groove.

[0039] In the embodiment of the present application, the setting of the first slide groove allows the position of each first sensor to be adjusted, so that the position of each first sensor can be adjusted according to the size of the object to be weighed.

[0040] In a possible design, a second sensor is installed on the frame, and the second sensor is used to detect whether there is an object to be weighed on the weighing mechanism.

[0041] In the embodiment of the present application, the second sensor is provided to detect whether there is an object to be weighed on the weighing mechanism, so as to perform the weighing operation after detecting that there is an object to be weighed on the weighing mechanism.

[0042] In a possible design, a third sensor is installed on the frame, and the third sensor is used to detect whether the object to be weighed falls over.

[0043] In an embodiment of the present application, the third sensor can detect whether the object to be weighed is properly placed to improve the weighing detection accuracy.

[0044] In a possible design, a mounting rod is provided on the rack, the second sensor and the third sensor are both mounted on the mounting rod, and the mounting height of the third sensor is higher than the mounting height of the second sensor.

[0045] In this embodiment, the third sensor can detect whether the object to be weighed falls over by detecting whether the actual height of the object to be weighed exceeds the height of the object to be weighed when it is placed in place.

[0046] In a possible design, a first slide rail is installed on the frame, and the second limiting mechanism is slidably assembled on the first slide rail.

[0047] In this embodiment, the provision of the first slide rail can improve the movement stability of the second limiting mechanism.

[0048] In a second aspect, a battery production line is provided, comprising a weighing device as provided in any of the above technical solutions.

[0049] Since the battery production line includes the above-mentioned weighing device, it has at least all the beneficial effects of the above-mentioned weighing device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 is a schematic diagram of the structure of a weighing device provided by an embodiment of the present application from a first perspective;

[0052] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0053] Figure 3 is a schematic diagram of the structure of a weighing device provided by an embodiment of the present application from a second perspective;

[0054] Figure 4 is a structural schematic diagram of a first locking member in a weighing device provided by an embodiment of the present application;

[0055] Figure 5 is an exploded view of the parts of a first locking member in a weighing device provided by an embodiment of the present application;

[0056] Figure 6 is a schematic diagram from a third perspective of a weighing device provided by an embodiment of the present application (the weighing mechanism is not shown);

[0057] Figure 7 It is a partial structural schematic diagram of a first limiting mechanism in a weighing device provided in an embodiment of the present application;

[0058] Figure 8 is a structural schematic diagram of a second limiting mechanism in a weighing device provided in an embodiment of the present application;

[0059] Fig. 9 yes Figure 1 The enlarged view of point B in the middle;

[0060] Fig.10 is a schematic diagram of a weighing device provided by an embodiment of the present application from a fourth perspective;

[0061] Fig.11 It is a partial structural schematic diagram of a second limiting mechanism in a weighing device provided in an embodiment of the present application;

[0062] Fig.12 It is a fifth perspective schematic diagram of a weighing device provided by an embodiment of the present application (the weighing mechanism is not shown).

[0063] The reference numerals in the above drawings are as follows:

[0064] 100-frame; 110-supporting plate; 120-through hole; 130-first slide rail; 140-first scale; 150-mounting rod; 151-first mounting rod; 152-second mounting rod; 153-third mounting rod; 154-fourth mounting rod; 160-first slide slot; 170-second slide slot; 180-third slide slot;

[0065] 200-weighing mechanism; 210-fourth locking member; 220-second trigger member; 230-convex strip; 240-fourth indicator;

[0066] 300-first limiting mechanism; 310-first mounting frame; 320-first fixing member; 321-limiting groove; 330-first moving member; 340-first lifting structure; 350-assembly plate; 360-second slide rail; 370-second locking assembly; 371-second rack; 372-second locking member; 381-second scale; 382-second indicator; 390-third trigger member;

[0067] 400-second limiting mechanism; 410-second mounting frame; 411-first plate; 412-second plate; 420-second moving member; 430-second fixing member; 440-second lifting structure; 450-third slide rail; 460-third locking assembly; 461-third rack; 462-third locking member; 470-first indicator; 481-third scale; 482-third indicator; 491-first trigger member; 492-fourth trigger member;

[0068] 500-first locking assembly; 510-first rack; 511-first tooth portion; 512-first tooth groove; 520-first locking member; 521-first positioning tooth; 522-main body; 522a-lifting portion; 522b-stopping portion; 523-elastic member;

[0069] 610-first sensor; 620-second sensor; 621-first transmitting end; 622-first receiving end; 630-third sensor; 631-second transmitting end; 632-second receiving end; 640-fourth sensor; 650-fifth sensor; 660-sixth sensor;

[0070] 700-Guide structure. DETAILED DESCRIPTION

[0071] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0072] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0073] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0074] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred weighing equipment or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0075] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0076] In the related art, batteries are manufactured through multiple steps in a battery production line. Different steps require different equipment operations. Therefore, multiple devices are set up in the battery production line to perform different processing operations on the batteries. During the production and manufacturing process of the battery, the battery needs to be weighed and tested. During the weighing process of the battery, the battery needs to be placed on a weighing instrument and limited by a limit mechanism so that the position of the battery on the weighing instrument remains stable, thereby improving the accuracy of the weighing data.

[0077] In some cases, the same battery production line can be used to produce batteries of multiple different sizes. Switching the battery production line from producing batteries of one size to producing batteries of another different size is called model change. During the model change, since the limiting mechanism originally adapted to the previous model of battery cannot be adapted to the new model of battery, this results in the need to dismantle the limiting mechanism and replace it with a new limiting mechanism during the battery model change. Or part of the structure of the limiting mechanism is dismantled and installed in a position adapted to the new model of battery. The limiting mechanism is usually fixed by multiple bolts, which makes the process of disassembling and installing the limiting mechanism require the disassembly and installation of multiple bolts, which is complicated and time-consuming, resulting in complex battery model change operations, long time and low efficiency.

[0078] Based on the above considerations, in order to solve the above problems, the embodiments of the present application provide a weighing device and a battery production line. The weighing device is applied in the battery production line. The weighing device includes a frame, a weighing mechanism, a first limiting mechanism and a second limiting mechanism. The first limiting mechanism and the weighing mechanism are installed on the frame. The second limiting mechanism can move relative to the frame and is fixed to the frame by a first locking assembly. The first locking assembly includes a first rack and a first locking member. The first locking member and the first rack are locked by the cooperation of the tooth portion and the tooth groove. The first locking member is slidably assembled on the second limiting mechanism. The locking and unlocking of the second limiting mechanism and the frame can be achieved by moving the first locking member. The operation is convenient, efficient and time-saving, so that the type change operation is convenient, efficient and time-saving.

[0079] The weighing equipment and battery production line provided in the embodiments of the present application are explained in detail below.

[0080] like Figure 1 and Figure 2As shown, this embodiment provides a weighing device, including: a frame 100, a weighing mechanism 200, a first limiting mechanism 300, a second limiting mechanism 400 and a first locking assembly 500, wherein the weighing mechanism 200 is installed on the frame 100, and the weighing mechanism 200 is used to weigh the object to be weighed; the first limiting mechanism 300 is installed on the frame 100; the second limiting mechanism 400 is slidably assembled on the frame 100, the second limiting mechanism 400 is spaced apart from the first limiting mechanism 300, and the second limiting mechanism 400 can move relative to the frame 100 along a first direction to approach or move away from the first limiting mechanism 300; A locking assembly 500 includes a first rack 510 and a first locking member 520. The first rack 510 is arranged on the frame 100. The first rack 510 has a plurality of first tooth portions 511 arranged in sequence along a first direction, and a first tooth groove 512 is formed between adjacent first tooth portions 511; the first locking member 520 has at least one first positioning tooth 521 matching the first tooth groove 512; the first locking member 520 is slidably assembled on the second limiting mechanism 400, and can move relative to the second limiting mechanism 400 along the second direction to approach or move away from the first rack 510; the first positioning tooth 521 can be locked in any first tooth groove 512.

[0081] The frame 100 is used to provide installation space for the weighing mechanism 200, the first limiting mechanism 300, the second limiting mechanism 400 and the first rack 510. The frame 100 can be made of one or more composite materials such as plates, pipes, beams, etc., or can be cut as one piece. The frame 100 can be made of metal material, non-metallic material or composite material. For example, the frame 100 can be made of steel.

[0082] The weighing mechanism 200 is used to weigh the object to be weighed. The weighing mechanism 200 may include an electronic scale. The side of the weighing mechanism 200 used to place the object to be weighed is the working surface. When the weighing mechanism 200 is used to weigh the weight of the battery, in some feasible embodiments, a supporting piece may be provided on the working surface of the weighing mechanism 200. The supporting piece may be made of nylon or POM (Polyformaldehyde) to reduce the scratching of the blue film on the bottom of the battery and improve the protection of the battery. Figure 3 As shown, the support may include a plurality of convex strips 230 disposed at intervals, and the battery is placed on the plurality of convex strips 230. The convex strips 230 disposed at intervals can reduce the contact area between the support structure and the battery, thereby reducing scratches on the bottom of the battery.

[0083] The first limiting mechanism 300 and the second limiting mechanism 400 are arranged at intervals in the first direction, and the first limiting mechanism 300 and the second limiting mechanism 400 can limit the battery from at least two sides of the battery in the first direction. The first limiting mechanism 300 is fixedly mounted on the frame 100, and the first limiting mechanism 300 and the frame 100 can be connected by clamping, welding, bonding, bolting, etc.

[0084] The second limiting mechanism 400 is installed on the frame 100, and the second limiting mechanism 400 can move relative to the frame 100 along the first direction, so that it can be close to or away from the first limiting mechanism 300 in the first direction. By changing the position of the second limiting mechanism 400 on the frame 100, the distance between the first limiting mechanism 300 and the second limiting mechanism 400 can be adjusted, so as to adapt to objects to be weighed with different sizes in the first direction.

[0085] The first locking assembly 500 is used to achieve locking and unlocking between the second limiting mechanism 400 and the frame 100. The first locking assembly 500 includes a first rack 510 and a first locking member 520. The first rack 510 is a strip-shaped structure on which a plurality of first tooth portions 511 are arranged. The plurality of first tooth portions 511 are arranged in sequence in the first direction. Adjacent first tooth portions 511 may be connected, and adjacent first tooth portions 511 may also be arranged at intervals. A first tooth groove 512 is formed between two adjacent first tooth portions 511. Since the number of first tooth portions 511 is multiple, the number of first tooth grooves 512 is multiple, and the number of first tooth grooves 512 is one less than the number of first tooth portions 511. Figure 2 As shown, the first locking member 520 has a first positioning tooth 521, and one first positioning tooth 521 can be inserted into any one of the first tooth grooves 512. When the first positioning tooth 521 is stuck in the first tooth groove 512, the second limiting mechanism 400 is locked with the frame 100, and the first locking member 520 is moved along the second direction to make the first positioning tooth 521 disengage from the first tooth groove 512. The second limiting mechanism 400 is unlocked from the frame 100, and the second limiting mechanism 400 can move relative to the frame 100 along the first direction, thereby changing the distance between the first limiting mechanism 300 and the second limiting mechanism 400.

[0086] On the first locking member 520, the number of the first positioning teeth 521 can be one or more. When the number of the first positioning teeth 521 is one, the first positioning tooth 521 can be inserted into any first tooth groove 512. When the number of the first positioning teeth 521 is multiple, the multiple first positioning teeth 521 are spaced apart along the first direction, and the distance between adjacent first positioning teeth 521 is equal to the distance between adjacent first tooth grooves 512. One first positioning groove is used to accommodate one first positioning tooth 521. When the first locking member 520 is locked on the first rack 510, the multiple first positioning teeth 521 are respectively inserted into different first positioning grooves.

[0087] The second direction is inclined relative to the first direction. For example, the angle between the second direction and the first direction may be 30°, 45°, 90°, 120° or 150°, etc. In one example, the first direction is parallel to the horizontal plane, and the second direction is perpendicular to the first direction. The second direction may be a vertical direction, that is, an up-down direction. The first rack 510 is located below the first locking member 520. The first locking member 520 can be inserted into the first tooth groove 512 by moving downward, and the first locking member 520 can be disengaged from the first tooth groove 512 by moving upward.

[0088] The embodiment of the present application also includes a third direction, which is perpendicular to the first direction, and the third direction is perpendicular to the second direction. Exemplarily, the first direction may be the length, width or height direction of the battery. In the following example, the first direction is the length direction of the battery, the second direction is the height direction of the battery, and the third direction is the width direction of the battery for further description. Figure 1 In the embodiment, the first direction is the X-axis direction, the second direction is the Z-axis direction, and the third direction is the Y-axis direction.

[0089] The weighing device provided in the embodiment of the present application can be used in a battery production line to weigh the battery. In the process of weighing the battery, the battery is the object to be weighed, and the battery is placed on the weighing mechanism 200. The first limiting mechanism 300 and the second limiting mechanism 400 are respectively located on both sides of the battery in the first direction to limit the battery, and the weighing mechanism 200 weighs the battery. In the process of changing the model, the distance between the first limiting mechanism 300 and the second limiting mechanism 400 is adjusted according to the size of the next battery to be weighed in the first direction, so that the distance between the first limiting mechanism 300 and the second limiting mechanism 400 is adapted to the size of the next battery to be tested in the first direction. During the adjustment process, the first locking member 520 is moved relative to the second limiting mechanism 400 along the second direction to move away from the first rack 510, thereby separating the first locking member 520 from the first rack 510, and the second limiting mechanism 400 is moved along the first direction to adjust the distance between the second limiting mechanism 400 and the first limiting mechanism 300. After the distance adjustment is completed, the first locking member 520 is moved in the direction close to the first rack 510 and extends into a first tooth groove 512 of the first rack 510, thereby locking the first locking member 520 and the first rack 510, that is, fixing the second limiting mechanism 400 to the frame 100, and thus completing the position adjustment process of the second limiting mechanism 400.

[0090] It can be seen from the above that the weighing equipment provided in the embodiment of the present application can unlock and fix the second limiting mechanism 400 by moving the first locking member 520, which simplifies the adjustment process of the second limiting mechanism 400, simplifies the model change operation process, and improves the model change efficiency.

[0091] like Figure 4 As shown, in some embodiments, the first locking member 520 includes a main body 522 and an elastic member 523 , the first positioning tooth 521 is disposed on the main body 522 , and the elastic member 523 is disposed between the main body 522 and the second limiting mechanism 400 .

[0092] The first positioning tooth 521 is disposed on the main body 522 , and the main body 522 can move relative to the second limiting mechanism 400 .

[0093] The elastic member 523 has a certain elasticity and can be an elastic structure such as an elastic rope, a spring, or a spring. The elastic member 523 is located between the main body 522 and the second limiting mechanism 400. The elastic member 523 is used to insert the first positioning tooth 521 on the main body 522 into the first tooth groove 512, that is, the main body 522 and the first rack 510 are kept in a locked state without the action of other external forces, so that the second limiting mechanism 400 is kept in a locked state with the frame 100 without external forces, so as to improve the limiting stability of the first limiting mechanism 300 for the object to be weighed. When the main body 522 is pulled to move in the direction away from the first rack 510 along the second direction, the elastic member 523 deforms and accumulates force. After the main body 522 is released, the elastic member 523 drives the main body 522 to move in the direction close to the first rack 510, so that the first positioning tooth 521 of the main body 522 is inserted into the first tooth groove 512.

[0094] In the embodiment of the present application, the elastic member 523 plays a resetting role for the main body 522, so that the resetting of the main body 522 can be automatically realized, further simplifying the operation process. In addition, the elastic member 523 can keep the main body 522 in a locked state, thereby improving the limiting stability of the second limiting mechanism 400.

[0095] The main body 522 can be slidably mounted on the outer side of the second limiting mechanism 400, or the main body 522 can be inserted into the second limiting mechanism 400. In some embodiments, the second limiting mechanism 400 is provided with a guide hole (not shown in the figure), such as Figure 5 As shown, the main body 522 includes a lifting portion 522a and a locking portion 522b, the lifting portion 522a and the locking portion 522b are detachably connected, the elastic member 523 is sleeved on the locking portion 522b or the lifting portion 522a, one end of the lifting portion 522a is located on one side of the guide hole, and the locking portion 522b is located on the other side of the guide hole.

[0096] The lifting portion 522a is used for the user to lift the main body 522 so that the main body 522 is separated from the first rack 510. The lifting portion 522a may be provided with a head for the user to hold, and a rod for connecting with the locking portion 522b. The head is connected to one end of the rod, and the size of the head is larger than the size of the guide hole, and the size of the rod is smaller than the size of the guide hole, that is, the head will not extend into the guide hole, and the rod can extend into the guide hole. Exemplarily, the guide hole is a circular hole, and the head and the rod are both cylindrical, then the outer diameter of the head is larger than the inner diameter of the guide hole, and the inner diameter of the guide hole is smaller than the outer diameter of the rod. The guide hole is used to guide and limit the main body 522, and part of the main body 522 is inserted in the guide hole, so that the main body 522 and the second limiting mechanism 400 are more compact and occupy less space.

[0097] The stopper 522b is used to cooperate with the first rack 510 to stop the main body 522 on the first rack 510. The first positioning tooth 521 is provided at one end of the stopper 522b, and the outer diameter of the end of the stopper 522b provided with the first positioning tooth 521 can be larger than the inner diameter of the guide hole, so that after the stopper 522b is connected to the rod of the lifting part 522a, the heads of the stopper 522b and the lifting part 522a are respectively located outside the two ends of the guide hole, and the heads of the stopper 522b and the lifting part 522a allow the main body 522 to be limitedly installed in the guide hole and will not be completely separated from the guide hole.

[0098] The stopper 522b is fixedly connected to the lifting part 522a. For example, the stopper 522b and the lifting part 522a can be connected by bonding, threaded connection, interference fit connection, etc. For example, an assembly hole is provided at one end of the stopper 522b facing the lifting part 522a, and an assembly rod is provided at one end of the rod of the lifting part 522a. When the assembly hole is a light hole, the assembly rod is connected to the assembly hole by interference fit, so that the stopper 522b is connected to the lifting part 522a by interference fit. When the assembly hole is a threaded hole, the assembly rod has an external thread matching the assembly hole, and the assembly rod is connected to the assembly hole by threaded fit, so that the stopper 522b is connected to the lifting part 522a by threaded fit.

[0099] The elastic member 523 may be a coil spring. In one example, the elastic member 523 may be sleeved on the outside of the lifting portion 522a. One end of the elastic member 523 may abut or be connected to the head of the lifting portion 522a, and the other end may abut or be connected to the second limiting mechanism 400, such as being connected to the inner wall of the guide hole, or abutting against the side of the second limiting mechanism 400 facing the head. Alternatively, in another example, the elastic member 523 may be sleeved on the outside of the stopper portion 522b. One end of the elastic member 523 may abut or be connected to the side of the end of the stopper portion 522b provided with the first positioning tooth 521 that is away from the first positioning tooth 521, and the other end of the elastic member 523 may abut or be connected to the second limiting mechanism 400, such as being connected to the inner wall of the guide hole, or abutting against the side of the second limiting mechanism 400 facing the stopper portion 522b.

[0100] In the embodiment of the present application, the lifting portion 522a and the locking portion 522b are detachably connected, which facilitates the elastic member 523 to be sleeved on the locking portion 522b or the lifting portion 522a, and facilitates the installation of the lifting portion 522a and the locking portion 522b on the second limiting mechanism 400.

[0101] like Figure 2 and Figure 3As shown, in some embodiments, a first scale 140 is installed on the frame 100 , the first scale 140 is arranged along the first direction, and the second limiting mechanism 400 is installed with a first indicator 470 , which is arranged opposite to the first scale 140 .

[0102] The first scale 140 is a structure with scale lines. The first scale 140 is arranged along the first direction, which means that the length direction of the first scale 140 is the first direction, and the extension direction of the scale lines on the first scale 140 is the first direction. The first scale 140 can be fixedly mounted on the frame 100, for example, the first scale 140 is connected to the frame 100 by bolting or bonding. Alternatively, the first scale 140 can be integrated on the frame 100, for example, scale lines are engraved or printed on the frame 100 to form a scale.

[0103] The first indicator 470 is used to point to the scale line, and the first indicator 470 can be used as a reference position so that the observer can more accurately know the moving position or moving distance of the second limiting mechanism 400. The first indicator 470 can be an arrow-shaped structure, and the arrow-shaped structure has a tip, and the tip points to the first scale 140. For example, when the minimum unit of the scale line on the first scale 140 is millimeter, when the first indicator 470 moves from pointing to 20 mm to pointing to 50 mm, it means that the moving distance of the second limiting mechanism 400 is 30 mm.

[0104] In the embodiment of the present application, the provision of the first scale 140 and the first indicator 470 facilitates the clear movement position of the second limiting mechanism 400, so that the position of the second limiting mechanism 400 can be adjusted more accurately. The provision of the first scale 140 and the first indicator 470 also facilitates the quick positioning of the position of the second limiting mechanism 400. For example, for the first type of battery, the second limiting mechanism 400 is adjusted to the position where the first indicator 470 points to 10 mm, which is the fitting position. For the second type of battery, the second limiting mechanism 400 is adjusted to the position where the first indicator 470 points to 30 mm, which is the fitting position. Due to the provision of the first indicator 470, the person adjusting the second limiting mechanism 400 can clearly know whether the second limiting mechanism 400 is adjusted to the right position, thereby reducing the difficulty of operation and improving the operation efficiency.

[0105] like Figure 6As shown, in some embodiments, the first limiting mechanism 300 includes a first mounting frame 310, a first fixing member 320 and a first movable member 330, the first mounting frame 310 is mounted on the frame 100, the first fixing member 320 is fixedly mounted on the first mounting frame 310, the first movable member 330 and the first fixing member 320 are spaced apart in the third direction, the first movable member 330 is slidably assembled on the first mounting frame 310, and the first movable member 330 can move along the third direction; the second limiting mechanism 400 includes a second mounting frame 410, a second fixing member 430 and a second movable member 420, the second mounting frame 410 is slidably assembled on the frame 100, the second fixing member 430 is fixedly mounted on the second mounting frame 410, the second movable member 420 and the second fixing member 430 are spaced apart in the third direction, the second movable member 420 is slidably assembled on the second mounting frame 410, and the second movable member 420 can move along the third direction, and the third direction is perpendicular to the first direction.

[0106] The first mounting frame 310 is used to provide an installation space for the first fixing member 320 and the first movable member 330. The first mounting frame 310 integrates the first fixing member 320 and the first movable member 330 into a whole. When the first mounting frame 310 is mounted on the rack 100, the first fixing member 320 and the first movable member 330 are installed on the rack 100, thereby improving the efficiency of installing the first fixing member 320 and the first movable member 330 on the rack 100. The first fixing member 320 is fixedly mounted on the first mounting frame 310, and the first movable member 330 can move along the third direction relative to the first fixing member 320, thereby changing the distance between the first movable member 330 and the first fixing member 320. The first movable member 330 and the first fixing member 320 can be respectively located on both sides of the battery in the third direction, thereby limiting the battery in the third direction.

[0107] The second mounting frame 410 is used to provide an installation space for the second fixing member 430 and the second movable member 420. The second mounting frame 410 integrates the second fixing member 430 and the second movable member 420 into a whole. The second mounting frame 410 is slidably installed on the frame 100, so that the second fixing member 430 and the second movable member 420 are both slidably installed on the frame 100. The second mounting frame 410 moves along the first direction relative to the frame 100, which can drive the second fixing member 430 and the second movable member 420 to move together relative to the frame 100 along the first direction. The setting of the second mounting frame 410 improves the efficiency of installing the second fixing member 430 and the second movable member 420 on the frame 100. The second fixing member 430 is fixedly mounted on the second mounting frame 410, and the second movable member 420 can move along the third direction relative to the second fixing member 430, thereby changing the distance between the second movable member 420 and the second fixing member 430, and the second movable member 420 and the second fixing member 430 can be respectively located on both sides of the battery in the third direction, thereby limiting the battery in the third direction.

[0108] Exemplarily, the first direction is the length direction of the battery, the second direction is the up-down direction, and the third direction is the width direction of the battery. The first movable member 330, the first fixed member 320, the second movable member 420, and the second fixed member 430 are respectively located at the four corners of the battery. The first movable member 330 and the first fixed member 320 are both located on one side of the battery in the first direction, the second movable member 420 and the second fixed member 430 are both located on the other side of the battery in the first direction, and the first movable member 330 and the first fixed member 320 are respectively located on both sides of one end of the battery in the third direction, and the second movable member 420 and the second fixed member 430 are respectively located on both sides of the other end of the battery in the third direction. The first movable member 330, the first fixed member 320, the second movable member 420, and the second fixed member 430 are surrounded to form a limiting area. The length of the limiting area in the first direction can be changed by moving the second mounting frame 410, and the length of the limiting area in the third direction can be changed by moving the first movable member 330 and the second movable member 420, so as to be suitable for limiting a variety of batteries with different lengths and / or widths.

[0109] In one example, the first movable member 330, the first fixed member 320, the second movable member 420 and the second fixed member 430 respectively have a limiting groove 321, the limiting groove 321 includes a bottom surface and two side surfaces, one side surface of the first movable member 330 is opposite to one side surface of the first fixed member 320, the other side surface of the first movable member 330 is opposite to one side surface of the second movable member 420, the other side surface of the first fixed member 320 is opposite to one side surface of the second fixed member 430, and the other side surface of the second movable member 420 is opposite to the second fixed member 430. In this way, when the battery is placed in the first limiting mechanism 300 and the second limiting mechanism 400, the four corner areas of the battery are respectively located in the four limiting grooves 321, and the four corners of the bottom surface of the battery are respectively placed on the bottom surface of the first movable member 330, the bottom surface of the first fixed member 320, the bottom surface of the second movable member 420 and the bottom surface of the second fixed member 430.

[0110] In one example, the first moving member 330 , the first fixing member 320 , the second moving member 420 , and the second fixing member 430 are respectively made of nylon or POM material.

[0111] In the embodiment of the present application, the object to be weighed can be limited in the third direction by the cooperation between the first moving member 330 and the first fixing member 320, and the cooperation between the second moving member 420 and the second fixing member 430. The positions of the first moving member 330 and the second moving member 420 can be adjusted to accommodate a variety of objects to be weighed with different sizes in the third direction.

[0112] like Figure 6 As shown, in some embodiments, the first mounting frame 310 and the first movable member 330 are connected via a second locking assembly 370, the second locking assembly 370 includes a second rack 371 and a second locking member 372, the second rack 371 is disposed on the first mounting frame 310 along a third direction, the second rack 371 is provided with a plurality of second tooth grooves along the third direction, the second locking member 372 has a second positioning tooth matching the second tooth groove, the second locking member 372 is slidably assembled on the first movable member 330 along the second direction, and the second positioning tooth can be locked in any second tooth groove.

[0113] The structure of the second rack 371 is similar to that of the first rack 510 . The second rack 371 may have the same structure as the first rack 510 , and the size of the second rack 371 may be the same as or different from that of the first rack 510 . For example, the length of the second rack 371 is smaller than the length of the first rack 510 .

[0114] The second locking member 372 may adopt the same structure as the first locking member 520. With this configuration, the second locking member 372 and the first locking member 520 may be mass-produced, thereby reducing production costs.

[0115] In one example, the length of the second rack 371 is smaller than that of the first rack 510, and the size of the second tooth groove in the second rack 371 and the distance between adjacent second tooth grooves are equal to the size of the first tooth groove 512 in the first rack 510, that is, the distance between adjacent first tooth grooves 512. In this way, the first locking member 520 adapted to the first rack 510 and the second locking member 372 adapted to the second rack 371 can adopt the same structure.

[0116] In the embodiment of the present application, the provision of the second locking assembly 370 simplifies the position adjustment operation of the first movable member 330 and improves the efficiency of the position adjustment operation of the first movable member 330 .

[0117] In some embodiments, a second scale 381 is disposed on the first mounting frame 310 along the third direction, and a second indicator 382 is installed on the first moving member 330 , and the second indicator 382 points to the second scale 381 .

[0118] The second scale 381 is a bar structure with scale lines, and the second scale 381 can be the same structure as the first scale 140. The length of the second scale 381 can be less than the length of the first scale 140. The second indicator 382 can adopt the same structure as the first indicator 470. The second indicator 382 can be an arrow structure, and the tip of the arrow points to the scale line on the second scale 381. In the process that the first moving member 330 moves, the second indicator 382 moves with the first moving member 330, so as to be convenient to observe the moving distance of the first moving member 330. In the embodiment of the present application, the second scale 381 and the second indicator 382 are provided, so as to be convenient to clarify the moving position of the first moving member 330, so as to be able to more accurately adjust the position of the first moving member 330.

[0119] In some embodiments, Figure 8 As shown, the second mounting frame 410 and the second movable member 420 are connected via a third locking assembly 460, and the third locking assembly 460 includes a third rack 461 and a third locking member 462, the third rack 461 is arranged on the second mounting frame 410 along the third direction, the third rack 461 is provided with a plurality of third tooth grooves along the third direction, the third locking member 462 has a third positioning tooth matching the third tooth groove, the third locking member 462 is slidably assembled on the second movable member 420 along the second direction, and the third positioning tooth can be stuck in any third tooth groove.

[0120] The structure of the third rack 461 is similar to that of the second rack 371. By way of example, the third rack 461 may have the same structure as the second rack 371, and the size of the third rack 461 may also be the same as that of the second rack 371. By way of example, a rack with the same structure and size is used, and the rack installed on the first mounting frame 310 is the second rack 371, and the rack installed on the second mounting frame 410 is the third rack 461.

[0121] The third locking member 462 can adopt the same structure as the second locking member 372, and the second locking member 372 can adopt the same structure as the first locking member 520. With this arrangement, the first locking member 520, the second locking member 372 and the third locking member 462 can be mass-produced, which is beneficial to reducing production design costs.

[0122] In the embodiment of the present application, the provision of the third locking assembly 460 simplifies the position adjustment operation of the second movable member 420 and improves the efficiency of the position adjustment operation of the second movable member 420 .

[0123] like Figure 8 As shown, in some embodiments, a third scale 481 is provided on the second mounting frame 410 along the third direction, and a third indicator 482 is installed on the second moving member 420 , and the third indicator 482 points to the third scale 481 .

[0124] The third scale 481 is a strip structure with scale lines. The third scale 481 can adopt the same structure as the second scale 381, and the third scale 481 can adopt the same size as the second scale 381. Exemplarily, two scales with the same structure and the same size are installed on the first mounting frame 310 as the second scale 381, and are installed on the second mounting frame 410 as the third scale 481. The third indicator 482 can be an arrow structure, and the tip of the arrow points to the scale line of the third scale 481. In the process that the second mobile member 420 moves, the third indicator 482 moves along the third direction with the second mobile member 420, so as to be convenient to observe the moving distance of the second mobile member 420. In the embodiment of the present application, the setting of the third scale 481 and the third indicator 482 is convenient to clarify the moving position of the second mobile member 420, so as to more accurately adjust the position of the second mobile member 420.

[0125] like Figure 6 and Figure 8As shown, in some embodiments, a first lifting structure 340 is installed on the frame 100, the first lifting structure 340 is connected to the first mounting frame 310, and the first lifting structure 340 is used to drive the first mounting frame 310 to move along the second direction. The second mounting frame 410 includes a first plate 411 and a second plate 412, the second fixing member 430 and the second moving member 420 are both installed on the first plate 411, the second plate 412 is installed with a second lifting structure 440, the second lifting structure 440 is connected to the first plate 411, and the second lifting structure 440 is used to drive the first plate 411 to move along the second direction.

[0126] The first lifting structure 340 is used to drive the first mounting frame 310 to move along the second direction, so that the first moving member 330 and the first fixing member 320 on the first mounting frame 310 move along the second direction, and the second lifting structure 440 is used to drive the first plate 411 in the second mounting frame 410 to move along the second direction, so as to drive the second moving member 420 and the second fixing member 430 on the first plate 411 to move along the second direction. The first lifting structure 340 and the second lifting structure 440 move synchronously, so that the first moving member 330, the first fixing member 320, the second moving member 420 and the second fixing member 430 move synchronously in the second direction. Since the battery is placed on the first moving member 330, the first fixing member 320, the second moving member 420 and the second fixing member 430, the cooperation of the first lifting structure 340 and the second lifting structure 440 can drive the battery to move along the second direction, so that the battery moves in a direction close to or away from the weighing mechanism 200.

[0127] The first lifting structure 340 and the second lifting structure 440 may adopt the same structure or different structures. The first lifting structure 340 and the second lifting structure 440 may both adopt a cylinder, a hydraulic cylinder or a motor as a power source. Exemplarily, the first lifting structure 340 and the second lifting structure 440 both include a cylinder, and the cylinder includes a cylinder body and a cylinder rod. The cylinder body of the first lifting structure 340 is connected to the frame 100, and the cylinder rod is connected to the first mounting frame 310. The cylinder body of the second lifting structure 440 is connected to the second plate 412, and the cylinder rod is connected to the first plate 411.

[0128] The first jacking structure 340 and the second jacking structure 440 are arranged so that the first mounting frame 310 and the first plate 411 can move along the second direction, so that the first fixing member 320 and the first moving member 330 on the first mounting frame 310, and the second fixing member 430 and the second moving member 420 on the first plate 411 can move along the second direction, so as to drive the object to be weighed to move along the second direction to approach or move away from the weighing mechanism 200. In this way, after the object to be weighed is limited, it will contact the weighing mechanism 200 to carry out the weighing operation, and the weighing accuracy is high. In this arrangement, in the process of loading the battery to be weighed, the first jacking structure 340 and the second jacking structure 4400 can be in an elevated state, that is, the first moving member 330, the first fixing member 320, the second moving member 420 and the second fixing member 430 have a certain gap with the weighing mechanism 200, respectively, so as to facilitate the loading of the battery. For example, the battery is moved by a structure such as a gripper, and there is a certain space above the weighing mechanism 200 to accommodate part of the structure of the gripper.

[0129] In one example, if Figure 6 As shown, the first limiting mechanism 300 also includes an assembly plate 350, the first lifting structure 340 is mounted on the assembly plate 350, and the assembly plate 350 is connected to the frame 100. The arrangement of the assembly plate 350 facilitates the connection between the first lifting structure 340 and the frame 100. Figure 6 and Figure 8 As shown, a guide structure 700 may be provided between the assembly plate 350 and the first mounting frame 310, and a guide structure 700 may also be provided between the first plate 411 and the second plate 412. The guide structure 700 may include a guide rod and a linear guide rail, the linear guide rail includes an inner ring, an outer ring and a ball, the ball is located between the inner ring and the outer ring, and the guide rod extends into the inner ring and is connected to the inner ring. Between the assembly plate 350 and the first mounting frame 310, the outer ring of the linear guide rail is connected to the assembly plate 350, and the guide rod is connected to the first mounting frame 310. Between the first plate 411 and the second plate 412, the outer ring of the linear guide rail is connected to the first plate 411, and the guide rod is connected to the second plate 412.

[0130] In some embodiments, Figure 1 and Fig. 9 The weighing mechanism 200 is slidably mounted on the frame 100, and the weighing mechanism 200 can move along the first direction relative to the frame 100. The weighing mechanism 200 is installed with a fourth locking member 210, and the fourth locking member 210 has at least one first positioning tooth 521 matching the first tooth groove 512. The fourth locking member 210 can move along the second direction relative to the weighing mechanism 200 to approach or move away from the first rack 510, so that the fourth positioning tooth can be stuck in any first tooth groove 512.

[0131] The fourth locking member 210 has the same structure as the first locking member 520. With this arrangement, the teeth on the fourth locking member 210 are fourth positioning teeth, which have the same structure and size as the first positioning teeth 521. With this arrangement, the fourth locking member 210 matches the first rack 510, that is, both the fourth locking member 210 and the first locking member 520 can be locked on the first rack 510.

[0132] In the embodiment of the present application, the weighing mechanism 200 is slidably mounted on the frame 100, and the weighing mechanism 200 can move relative to the frame 100 along the first direction, and the weighing mechanism 200 is locked with the frame 100 by the fourth locking member 210. In this way, during the battery replacement process, the position of the weighing mechanism 200 can be moved so that the weighing mechanism 200 is located at a relatively central position between the first limiting mechanism 300 and the second limiting mechanism 400, that is, the distance between the weighing mechanism 200 and the first limiting mechanism 300 is similar to or equal to the distance between the weighing mechanism 200 and the second limiting mechanism 400. In this way, when the battery is placed on the weighing mechanism 200, the weighing mechanism 200 is located at the bottom center of the battery, and the weighing mechanism 200 supports the battery more stably, and the weighing accuracy is higher.

[0133] like Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments, the weighing device also includes a control mechanism, an alarm mechanism and a plurality of first sensors 610. The plurality of first sensors 610 are arranged on the frame 100 at intervals along the first direction. A first trigger member 491 is installed on the second limiting mechanism 400. The first trigger member 491 can trigger any first sensor 610. The control mechanism is respectively communicated with the plurality of first sensors 610 and the alarm mechanism. The control mechanism is used to control the alarm mechanism to send a warning signal when the first sensor 610 matching the object to be weighed is not triggered.

[0134] The first sensor 610 may be a proximity sensor. When the first trigger member 491 moves to a distance less than a distance threshold between the first sensor 610 and the first sensor 610, the first sensor 610 is triggered to indicate that the second limiting mechanism 400 moves to a position matching the first sensor 610. Since a plurality of first sensors 610 are provided, the position of the second limiting mechanism 400 may be known by corresponding to the position of the triggered first sensor 610.

[0135] The control mechanism can be set up separately for the weighing equipment. The control mechanism can be connected to the control system in the battery production line. The control system of the battery production line sends the model information of the battery to be weighed to the control mechanism. The control mechanism obtains the first sensor 610 matching the battery according to the model information of the battery to be weighed. That is, if the battery of this model is to be weighed, the second limit mechanism 400 needs to be moved to a matching position. The first sensor 610 triggered when the second limit mechanism 400 is in the matching position is the first sensor 610 matching the battery of this model. During the movement of the second limit mechanism 400, the control mechanism determines the position of the second limit mechanism 400 according to the position of the triggered first sensor 610, thereby determining whether the second limit mechanism 400 is moved into place. If the second limit mechanism 400 is not moved into place, the control alarm mechanism sends a warning signal to prompt the operator to move the second limit mechanism 400. The control mechanism may include a structure such as a single-chip microcomputer or a PLC (Programmable Logic Controller) that can write control information.

[0136] The alarm mechanism may include one or more structures such as a buzzer, an indicator light, a display panel, etc. The alarm mechanism may send out a warning signal by means of a buzzer beeping, an indicator light flashing, a display panel displaying the alarm information, etc.

[0137] like Figure 6 As shown, in some embodiments, the rack 100 is provided with a first slide slot 160 along the first direction, and each first sensor 610 is respectively slidably assembled in the first slide slot 160. In the embodiment of the present application, the first slide slot 160 is provided so that the position of each first sensor 610 can be adjusted, so that the position of each first sensor 610 can be adjusted according to the size of the object to be weighed.

[0138] In some embodiments, each first sensor 610 is connected to the first slide groove 160 through a fifth locking member (not shown), and the fifth locking member can be a structure such as a latch, a buckle, a bolt, etc. Exemplarily, the fifth locking member includes a first connecting portion, a second connecting portion and a bolt, the first connecting portion is provided with a threaded hole, and the second connecting portion is provided with a light hole. The groove body of the first slide groove 160 has an inner cavity and a notch, the notch is connected to the inner cavity, and the notch is arranged along the first direction. The first connecting portion is located in the inner cavity, the second connecting portion is located outside the inner cavity, and the second connecting portion is connected to the first sensor 610, and the bolt passes through the light hole and the notch of the second connecting portion and then screws into the threaded hole of the first connecting portion. After the bolt is tightened, the first connecting portion and the second connecting portion are clamped on the inner wall and the outer wall of the first slide groove 160, so that the first sensor 610 is fixedly connected to the first slide groove 160. After the bolt is loosened, the distance between the first connecting portion and the second connecting portion becomes larger, so that the first sensor 610 can be moved along the first slide groove 160.

[0139] In some embodiments, a second sensor 620 is installed on the frame 100 , and the second sensor 620 is used to detect whether there is an object to be weighed on the weighing mechanism 200 .

[0140] The second sensor 620 may be a photoelectric sensor, an infrared sensor, a proximity sensor, a contact sensor, etc. In the embodiment of the present application, the second sensor 620 is provided to detect whether there is an object to be weighed on the weighing mechanism 200, so as to perform a weighing operation after detecting that an object to be weighed is placed on the weighing mechanism 200.

[0141] In some examples, the second sensor 620 is a photoelectric sensor, which includes a first receiving end 622 and a first transmitting end 621. The first receiving end 622 and the first transmitting end 621 are arranged opposite to each other, and the first receiving end 622 and the first transmitting end 621 are respectively located on both sides of the weighing area. When the battery is placed on the weighing mechanism 200, the battery blocks the light emitted by the first transmitting end 621, so that the first receiving end 622 cannot receive the light, so that the second sensor 620 is triggered, indicating that an object to be weighed is placed on the weighing mechanism 200.

[0142] In some embodiments, a third sensor 630 is installed on the frame 100, and the third sensor 630 is used to detect whether the object to be weighed falls over.

[0143] The third sensor 630 may be a photoelectric sensor, an infrared sensor, a proximity sensor, a contact sensor, etc. In the embodiment of the present application, the third sensor 630 may detect whether the object to be weighed is properly placed, that is, whether the object to be weighed is stably placed. When the object to be weighed is stably placed, the weighing data is more accurate.

[0144] The detection height of the third sensor 630 can be higher than the top surface height of the object to be weighed, that is, the third sensor 630 can be detected by using the same structure as the second sensor 620, but the detection height of the third sensor 630 is higher than the detection height of the second sensor 620. If the object to be weighed is a battery, and the height of the battery is H1, then when the battery is placed on the weighing mechanism 200, the distance between the top surface of the battery and the top surface of the weighing mechanism 200 is H1, then the distance between the detection position of the second sensor 620 (when the second sensor 620 is a photoelectric sensor, the detection position of the second sensor 620 is the position where the light emitted by the second sensor 620 is located) and the top surface of the weighing mechanism 200 is less than H1, and the distance between the detection position of the third sensor 630 and the top surface of the weighing mechanism 200 is greater than H1 and is close to H1. In this way, when the battery is placed flat on the top surface of the weighing mechanism 200, the second sensor 620 can be triggered, while the third sensor 630 will not be triggered. When the battery falls over, the battery tilts relative to the top surface of the weighing mechanism 200, which makes the height of at least a part of the battery higher than H1, so that the second sensor 620 and the third sensor 630 are both triggered. Therefore, even if the same sensor is used, the battery in-place detection and whether it falls over can be realized respectively by different installation heights.

[0145] In some embodiments, Figure 6 and Fig.10 As shown, a mounting rod 150 is provided on the rack 100, and the second sensor 620 and the third sensor 630 are both mounted on the mounting rod 150, and the mounting height of the third sensor 630 is higher than the mounting height of the second sensor 620. The provision of the mounting rod 150 facilitates the installation of the second sensor 620 and the third sensor 630.

[0146] like Figure 1 , Figure 6 and Fig. 9 As shown, in some examples, when the weighing mechanism 200 is slidably assembled on the frame 100, a plurality of fourth sensors 640 may be installed on the frame 100, and the plurality of fourth sensors 640 are arranged at intervals along the first direction. A second triggering member 220 is installed on the weighing mechanism 200, and the fourth sensor 640 is communicatively connected with the control mechanism, and the second triggering member 220 may trigger any fourth sensor 640. The control mechanism may determine whether the weighing mechanism 200 has moved into place by the triggering state of the fourth sensor 640, and control the alarm mechanism to alarm when the weighing mechanism 200 has not moved into place. The second triggering member 220 has the same structure as the first triggering member 491, and the fourth sensor 640 has the same structure as the first sensor 610.

[0147] like Figure 6 , Figure 7 , Figure 8 and Fig.11 As shown, in some examples, a plurality of fifth sensors 650 (only one is shown in the figure) are arranged at intervals along the third direction on the first mounting frame 310, and a plurality of sixth sensors 660 (only one is shown in the figure) are installed along the third direction on the first plate 411 of the second mounting frame 410, a third triggering member 390 is installed on the first moving member 330, and the third triggering member 390 can trigger any fifth sensor 650, and a fourth triggering member 492 is installed on the second moving member 420, and the fourth triggering member 492 can trigger any sixth sensor 660, and the fifth sensor 650 and the sixth sensor 660 are both connected to the control mechanism for communication. The control mechanism can determine whether the first moving member 330 is moved into place by the fifth sensor 650, and determine whether the second moving member 420 is moved into place by the sixth sensor 660. The control mechanism is used to control the alarm mechanism to alarm when the first moving member 330 is not moved into place, and the control mechanism is also used to control the alarm mechanism to alarm when the second moving member 420 is not moved into place.

[0148] like Fig.10 As shown, in some embodiments, a first slide rail 130 is installed on the rack 100 , and the second limiting mechanism 400 is slidably assembled on the first slide rail 130 .

[0149] The first slide rail 130 is extended along the first direction, the second sliding mechanism is installed on the first slide rail 130, and the second sliding mechanism can move relative to the first slide rail 130. The number of the first slide rails 130 can be one or more. Exemplarily, the number of the first slide rails 130 is multiple, and the multiple first slide rails 130 are spaced apart along the third direction. In some examples, a slider is installed on the second limiting mechanism 400, and the slider is slidably assembled in the first slide rail 130. The provision of the first slide rail 130 can improve the movement stability of the second limiting mechanism 400.

[0150] In the case where the weighing mechanism 200 can move relative to the frame 100 along the first direction, the weighing mechanism 200 can also be slidably mounted on the first slide rail 130. Figure 7 As shown, a second slide rail 360 may be installed on the first mounting frame 310 along the third direction. Fig.11 As shown, a third slide rail 450 is installed on the first plate 411 of the second mounting frame 410 along the third direction, the first moving member 330 is slidably assembled on the second slide rail 360 , and the second moving member 420 is slidably assembled on the third slide rail 450 .

[0151] like Figures 1 to 12As shown, in a specific implementation of an embodiment of the present application, the weighing device includes: a frame 100, a weighing mechanism 200, a first limiting mechanism 300 and a second limiting mechanism 400, the frame 100 includes a supporting plate 110, a through hole 120 is provided in the middle of the supporting plate 110, two first slide rails 130 are installed on the supporting plate 110, the two first slide rails 130 both extend along the first direction, and the two first slide rails 130 are located on both sides of the through hole 120 in the third direction.

[0152] The first limiting mechanism 300 includes an assembly plate 350, a first mounting frame 310, a first fixing member 320 and a first moving member 330. A first lifting structure 340 is installed on the assembly plate 350. The first lifting structure 340 is connected to the first mounting frame 310. The assembly plate 350 is connected to the supporting plate 110. The middle part of the assembly plate 350 covers a part of the through hole 120. The first lifting structure 340 includes a cylinder. The cylinder body of the cylinder is installed below the assembly plate 350. The cylinder body passes through the through hole 120 and is located in the area below the supporting plate 110. The cylinder rod passes through the assembly plate 350 and is located in the area above the supporting plate 110. The cylinder rod is connected to the first mounting frame 310. A second slide rail 360 is arranged on the first mounting frame 310 along the third direction. The first moving member 330 is slidably installed on the second slide rail 360. The first fixing member 320 is fixedly installed on the first mounting frame 310.

[0153] The second limiting mechanism 400 includes a second mounting frame 410, a second fixing member 430 and a second moving member 420. The second mounting frame 410 includes a first plate 411 and a second plate 412. The second plate 412 is slidably mounted on two first slide rails 130. The second fixing member 430 is fixedly mounted on the first plate 411. A third slide rail 450 is mounted on the first plate 411 along a third direction. The second moving member 420 is slidably mounted on the third slide rail 450. A second lifting structure 440 is installed between the first plate 411 and the second plate 412. The second lifting structure 440 includes a cylinder. The cylinder body of the cylinder is installed below the second plate 412. The cylinder rod passes through the second plate 412 and is connected to the first plate 411.

[0154] The second plate 412 is connected to the supporting plate 110 through the first locking assembly 500, which includes a first rack 510 and a first locking member 520, the first locking member 520 is provided with a first positioning tooth 521, the second plate 412 is provided with a guide hole, and the first locking member 520 can move relative to the guide hole along the second direction. The first locking member 520 is inserted into the first tooth groove 512 of the first rack 510, and the second plate 412 can be locked on the supporting plate 110. The first moving member 330 is connected to the first mounting frame 310 through the second locking assembly 370, and the second locking assembly 370 includes a second rack 371 and a second locking member 372, the second rack 371 is arranged on the first mounting frame 310 along the third direction, the second locking member 372 is installed on the first moving member 330, and the second locking member 372 can move relative to the first moving member 330 along the second direction. The second positioning tooth of the second locking member 372 is inserted into the second tooth groove of the second rack 371, so that the first moving member 330 can be locked on the first mounting frame 310. The first plate 411 and the second moving member 420 are connected by the third locking assembly 460, and the third locking assembly 460 includes a third rack 461 and a third locking member 462. The third rack 461 is arranged on the second mounting frame 410 along the third direction, and the third rack 461 is provided with a plurality of third tooth grooves along the third direction. The third locking member 462 has a third positioning tooth matching the third tooth groove. The third locking member 462 is slidably assembled on the second moving member 420 along the second direction, and the third positioning tooth is stuck in any third tooth groove, so that the second moving member 420 can be fixed on the first plate 411. The weighing mechanism 200 is slidably assembled on the first slide rail 130. A fourth locking member 210 is installed on the weighing mechanism 200. The fourth locking member 210 has a fourth positioning tooth. The fourth positioning tooth matches the first tooth groove 512, so that the fourth positioning tooth can be locked in the first tooth groove 512 to fix the weighing mechanism 200 to the support plate 110.

[0155] A first scale 140 is arranged on the supporting plate 110 along the first direction, a first indicator 470 is arranged on the second plate 412, a fourth indicator 240 is installed on the weighing mechanism 200, and both the first indicator 470 and the fourth indicator 240 point to the first scale 140. A second scale 381 is arranged on the first mounting frame 310 along the third direction, and a second indicator 382 is installed on the first moving member 330. A third scale 481 is arranged on the first plate 411 along the third direction, and a third indicator 482 is arranged on the second moving member 420.

[0156] The weighing equipment also includes a control mechanism, and an alarm mechanism, a first sensor 610, a second sensor 620, a third sensor 630, a fourth sensor 640, a fifth sensor 650 and a sixth sensor 660 respectively connected to the control mechanism for communication. The number of the first sensor 610 and the number of the fourth sensor 640 are both multiple, and the multiple first sensors 610 and the multiple fourth sensors 640 are respectively arranged on the supporting plate 110 along the first direction at intervals. A first trigger member 491 is arranged on the second plate 412, and the first trigger member 491 is used to trigger any one of the first sensors 610. A second trigger member 220 is arranged on the weighing mechanism 200, and the second trigger member 220 is used to trigger any one of the fourth sensors 640. The number of the fifth sensor 650 and the sixth sensor 660 are both multiple, and the multiple fifth sensors 650 are arranged at intervals along the third direction on the first mounting frame 310, and the multiple sixth sensors 660 are arranged at intervals along the third direction on the first plate 411. The first moving member 330 is provided with a third triggering member 390, and the third triggering member 390 is used to trigger any of the fifth sensors 650. The second moving member 420 is provided with a fourth triggering member 492, and the fourth triggering member 492 is used to trigger any of the sixth sensors 660. The first sensor 610, the fourth sensor 640, the fifth sensor 650 and the sixth sensor 660 are all proximity sensors, and the first triggering member 491, the second triggering member 220, the third triggering member 390 and the fourth triggering member 492 are all block structures made of metal materials.

[0157] Mounting rods 150 are respectively installed at the four corners of the support plate 110. Taking the first movable member 330 and the second movable member 420 being arranged relatively to each other in the first direction, and the first fixed member 320 and the second fixed member 430 being arranged relatively to each other in the second direction as an example, the one close to the first movable member 330 is called the first mounting rod 151, the one close to the second movable member 420 is called the second mounting rod 152, the one close to the second fixed member 430 is called the third mounting rod 153, and the one close to the first fixed member 320 is called the fourth mounting rod 154. The second sensor 620 and the third sensor 630 are both photoelectric sensors, and both include a transmitting end and a receiving end. The transmitting end of the second sensor 620 is called the first transmitting end 621, and the receiving end of the second sensor 620 is called the first receiving end 622. The transmitting end of the third sensor 630 is called the second transmitting end 631, and the receiving end of the third sensor 630 is called the second receiving end 632. The first transmitting end 621 can be installed on the first mounting rod 151 and the second mounting rod 152, respectively, and the first receiving end 622 can be installed on the third mounting rod 153 and the fourth mounting rod 154, respectively. The second transmitting end 631 is installed on the second mounting rod 152, and the second receiving end 632 is installed on the fourth mounting rod 154. On the second mounting rod 152, the first transmitting end 621 is located below the second transmitting end 631; on the fourth mounting rod 154, the second receiving end 632 is located below the second receiving end 632. The first transmitting end 621 and the first receiving end 622 are at the same installation height, and the second receiving end 632 and the second transmitting end 631 are at the same height.

[0158] This embodiment also provides a battery production line, including a weighing device as provided in any of the above embodiments.

[0159] Since the battery production line includes the above-mentioned weighing device, it has at least all the beneficial effects of the above-mentioned weighing device, which will not be described in detail here.

[0160] The battery production line is used to produce and manufacture batteries. The battery production line includes multiple devices. Different devices can perform different operation processes. The weighing device provided in the above embodiment is one of the multiple devices of the battery production line, which is used to weigh the batteries. The battery production line may also include a conveying mechanism, and the conveying mechanism is connected to a grabbing device. The grabbing device can grab and fix the battery. The conveying mechanism drives the grabbing device to move to drive the battery to move between various devices. The conveying mechanism can drive the grabbing device to grab the battery and move the battery between the first limiting mechanism and the second limiting mechanism, thereby realizing automatic loading of the weighing device. After the weighing is completed, the grabbing device grabs the battery, and the conveying mechanism drives the grabbing device to move to move the battery away from the weighing device, thereby realizing automatic unloading of the weighing device.

[0161] The batteries produced by the battery production line include battery cells. The battery can be a battery module. When there are multiple battery cells, multiple battery cells are arranged and fixed to form a battery module. The battery can also be a battery pack, which includes a case and battery cells, and the battery cells or battery modules are accommodated in the case. Among them, the case is used to provide a storage space for the battery cells or battery modules, and the case can be independent of other structures of the electrical device, or the case can be part of other structures in the electrical device. Exemplarily, when the electrical device is a vehicle, the case can be part of the chassis of the vehicle, for example, part of the case can become at least part of the floor of the vehicle, or part of the case can become at least part of the crossbeam and longitudinal beam of the vehicle.

[0162] Batteries are used in electrical devices to provide electrical energy. Electrical devices may be, but are not limited to, mobile phones, tablets, laptops, electric toys, electric tools, battery cars, electric cars, ships, spacecraft, etc. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft may include airplanes, rockets, space shuttles, and spacecraft, etc.

[0163] Taking the electrical device as a vehicle as an example, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an augmented program vehicle, etc. A driving mechanism, a control mechanism and a battery can be arranged inside the vehicle. The driving mechanism can be a motor, etc., and the control mechanism is used to control the battery to supply power to the driving mechanism. For example, a battery can be arranged at the bottom, front or rear of the vehicle. The battery can be used to power other equipment in the vehicle. For example, the battery can be used as an operating power source for the vehicle and for the circuit system of the vehicle, for example, for the working power requirements during the start-up, navigation and operation of the vehicle. In another example, the battery can not only be used as the operating power source of the vehicle, but also as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving force for the vehicle.

[0164] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A weighing device, characterized in that: include: frame; A weighing mechanism, mounted on the frame, and used to weigh an object to be weighed; A first limiting mechanism is installed on the frame; a second limiting mechanism, slidably mounted on the frame, the second limiting mechanism being spaced apart from the first limiting mechanism, and the second limiting mechanism being able to move relative to the frame along a first direction to approach or move away from the first limiting mechanism; The first locking assembly includes a first rack and a first locking member, wherein the first rack is arranged on the frame, and the first rack has a plurality of first tooth portions arranged in sequence along the first direction, and a first tooth groove is formed between adjacent first tooth portions; the first locking member has at least one first positioning tooth matching the first tooth groove; the first locking member is slidably assembled in the second limiting mechanism, and can move along the second direction of the second limiting mechanism to approach or move away from the first rack; one of the first positioning teeth can be locked in any of the first tooth grooves.

2. The weighing device according to claim 1, characterized in that: The first locking member includes a main body and an elastic member, the first positioning tooth is arranged on the main body, and the elastic member is arranged between the main body and the second limiting mechanism.

3. The weighing device according to claim 2, characterized in that: The second limiting mechanism is provided with a guide hole, the main body includes a lifting part and a locking part, the lifting part is detachably connected to the locking part, the elastic member is sleeved on the locking part or the lifting part, one end of the lifting part is located on one side of the guide hole, and the locking part is located on the other side of the guide hole.

4. The weighing device according to claim 1, characterized in that: A first scale is installed on the frame, and the first scale is arranged along the first direction. The second limiting mechanism is installed with a first indicator, and the first indicator is arranged opposite to the first scale.

5. The weighing device according to any one of claims 1 to 4, characterized in that: The first limiting mechanism comprises a first mounting frame, a first fixing member and a first moving member, wherein the first mounting frame is mounted on the frame, the first fixing member is fixedly mounted on the first mounting frame, the first moving member and the first fixing member are spaced apart in a third direction, the first moving member is slidably assembled on the first mounting frame, and the first moving member can move along the third direction; The second limiting mechanism includes a second mounting frame, a second fixed member and a second movable member, the second mounting frame is slidably assembled on the frame, the second fixed member is fixedly mounted on the second mounting frame, the second movable member and the second fixed member are spaced apart in a third direction, the second movable member is slidably assembled on the second mounting frame, and the second movable member can move along the third direction, and the third direction is perpendicular to the first direction.

6. The weighing device according to claim 5, characterized in that The first mounting frame and the first movable member are connected via a second locking assembly, the second locking assembly includes a second rack and a second locking member, the second rack is arranged on the first mounting frame along the third direction, the second rack is provided with a plurality of second tooth grooves along the third direction, the second locking member has a second positioning tooth matching the second tooth groove, the second locking member is slidably assembled on the first movable member along the second direction, and the second positioning tooth can be locked in any of the second tooth grooves.

7. The weighing device according to claim 6, characterized in that A second scale is arranged on the first mounting frame along the third direction, a second indicator is installed on the first moving member, and the second indicator points to the second scale.

8. The weighing device according to claim 5, characterized in that: The second mounting frame and the second movable member are connected via a third locking assembly, and the third locking assembly includes a third rack and a third locking member, the third rack is arranged on the second mounting frame along a third direction, the third rack is provided with a plurality of third tooth grooves along the third direction, the third locking member has a third positioning tooth matching the third tooth grooves, the third locking member is slidably assembled on the second movable member along the second direction, and the third positioning tooth can be locked in any of the third tooth grooves.

9. The weighing device according to claim 8, characterized in that A third scale is arranged on the second mounting frame along the third direction, and a third indicator is installed on the second moving member, and the third indicator points to the third scale.

10. The weighing device according to claim 5, characterized in that: A first lifting structure is installed on the frame, the first lifting structure is connected to the first mounting frame, and the first lifting structure is used to drive the first mounting frame to move along the second direction; The second mounting frame includes a first plate and a second plate, the second fixing member and the second moving member are both mounted on the first plate, the second plate is mounted with a second lifting structure, the second lifting structure is connected to the first plate, and the second lifting structure is used to drive the first plate to move along the second direction.

11. The weighing device according to any one of claims 1 to 4, characterized in that: The weighing mechanism is slidably mounted on the frame, and the weighing mechanism can move relative to the frame along the first direction. The weighing mechanism is installed with a fourth locking member, and the fourth locking member has at least one fourth positioning tooth matching the first tooth groove. The fourth locking member can move relative to the weighing mechanism along the second direction to approach or move away from the first rack, so that the fourth positioning tooth can be locked in any of the first tooth grooves.

12. The weighing device according to any one of claims 1 to 4, characterized in that: The weighing equipment also includes a control mechanism, an alarm mechanism and multiple first sensors, the multiple first sensors are arranged on the frame at intervals along the first direction, a first triggering member is installed on the second limiting mechanism, the first triggering member can trigger any of the first sensors, the control mechanism is respectively communicated with the multiple first sensors and the alarm mechanism, and the control mechanism is used to control the alarm mechanism to send a warning signal when the first sensor matching the object to be weighed is not triggered.

13. The weighing device according to claim 12, characterized in that The frame is provided with a first slide groove along the first direction, and each of the first sensors is slidably assembled in the first slide groove.

14. The weighing device according to claim 12, characterized in that: A second sensor is installed on the frame, and the second sensor is used to detect whether there is an object to be weighed on the weighing mechanism.

15. The weighing device according to claim 14, characterized in that A third sensor is installed on the frame, and the third sensor is used to detect whether the object to be weighed falls over.

16. The weighing device according to claim 15, characterized in that The rack is provided with a mounting rod, the second sensor and the third sensor are both mounted on the mounting rod, and the mounting height of the third sensor is higher than the mounting height of the second sensor.

17. The weighing device according to any one of claims 1 to 4, characterized in that: A first slide rail is installed on the frame, and the second limiting mechanism is slidably assembled on the first slide rail.

18. A battery production line, characterized in that: Comprising a weighing device as claimed in any one of claims 1 to 17.

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