Weighing device

Abstract

A weighing device is used for weighing objects conveyed on a conveying line and comprises a first jacking assembly (10) and a second jacking assembly (20), the first jacking assembly (10) comprises a first base (11), a first jacking frame (12) and a first jacking driving element (13), and the first jacking driving element (13) is connected with the first base (11) and the first jacking frame (12) and drives the first jacking frame (12) to ascend or descend relative to the first base (11); the second jacking assembly (20) comprises a second base (21), a weighing mechanism (22) and a second jacking driving element (23), the weighing mechanism (22) is arranged on the second base (21) and is configured to weigh an object supported by the weighing mechanism (22), and the second jacking driving element (23) is connected with the second base (21) and the first jacking frame (12) and drives the second base (21) to ascend or descend relative to the first jacking frame (12). And the object is supported by the first jacking frame (12) or the weighing mechanism (22).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of batteries, in particular to a weighing device. BACKGROUND

[0002] Secondary batteries, especially lithium ion batteries, have the advantages of high voltage, large specific energy, long cycle life, green and pollution-free, wide working temperature range, and small self-discharge, and are widely used in portable electronic devices, energy storage devices, and power devices of large new energy electric vehicles, which have great significance in solving human environmental pollution and energy crisis. For some battery modules, the assembly process needs to be weighed. CONTENT OF THE INVENTION

[0003] In one aspect of the present disclosure, a weighing device is provided for weighing objects on a conveying line, comprising:

[0004] a first lifting assembly comprising a first base, a first lifting frame, and a first lifting drive element, the first lifting drive element being connected with the first base and the first lifting frame respectively and configured to drive the first lifting frame to lift or descend relative to the first base; and

[0005] a second lifting assembly comprising a second base, a weighing mechanism, and a second lifting drive element, the weighing mechanism being arranged on the second base and configured to weigh objects supported by the weighing mechanism, the second lifting drive element being connected with the second base and the first lifting frame respectively and configured to drive the second base to lift or descend relative to the first lifting frame so that the objects are supported by the first lifting frame or the weighing mechanism.

[0006] In the present embodiment, the first lifting drive element of the first lifting assembly drives the first lifting frame to lift or descend relative to the first base so that the objects to be weighed are separated from or returned to the conveying line, and the second lifting drive element of the second lifting assembly drives the second base to lift or descend relative to the first lifting frame so that the objects are supported by the first lifting frame or the weighing mechanism, thereby enabling the weighing mechanism to weigh the objects supported thereby. In this way, the objects on the conveying line are lifted to realize the weighing process and returned to the conveying line, saving the time required for the equipment and weighing process after the objects are moved away from the conveying line and then returned to the conveying line, thereby improving the weighing efficiency.

[0007] In some embodiments, the weighing mechanism comprises:

[0008] an electronic scale mounted on the upper surface of the second base;

[0009] a second lifting frame arranged on the electronic scale and configured to support the objects to be weighed.

[0010] In the embodiment, the electronic scale can compare the weight of the object more accurately. In addition to considering the accuracy of the weighing, the stability of the object during the weighing process, the uniformity of the force acting on the electronic scale and other factors are also involved. Therefore, a second lifting frame is arranged on the electronic scale to support the object to be weighed, and the second lifting frame is used to realize functions such as improving the stability and uniformity of the weighing, so that a special electronic scale does not need to be designed or the electronic scale needs to be assembled or modified more complicatedly.

[0011] In some embodiments, the weighing mechanism further comprises:

[0012] A limiting protrusion is arranged on the surface of the second lifting frame and is configured to limit the bottom of the object to be weighed.

[0013] In the embodiment, the limiting protrusion is embedded in the recess of the bottom of the object, which can limit the lateral movement of the object relative to the second lifting frame and reduce the risk of tipping or falling due to the lateral movement of the object relative to the second lifting frame.

[0014] In some embodiments, the weighing mechanism further comprises:

[0015] A plurality of first supporting protrusions are arranged at each corner of the second lifting frame and are configured to support the bottom of the object to be weighed.

[0016] In the embodiment, the support of the bottom of the object by the plurality of first supporting protrusions can reduce or eliminate the requirement for the flatness of the bottom of the object, which is conducive to simplifying the support structure and expanding the support range of the weighing mechanism for the object and improving the support stability.

[0017] In some embodiments, the weighing mechanism further comprises:

[0018] A plurality of first sensors are arranged at each corner of the second lifting frame and are configured to detect the position and / or inclination of the bottom of the object to be weighed.

[0019] In the embodiment, the sensing of the bottom of the object to be weighed by the plurality of first sensors arranged at each corner of the second lifting frame can realize the position detection and / or inclination detection of the object, so that the lifting and lowering of the object can be stably and reliably performed during the weighing process, thereby realizing more reliable and accurate weighing.

[0020] In some embodiments, the first lifting frame is located above the first base and has a first through hole penetrating in a first direction, the second lifting frame is located on the upper side of the first lifting frame, and the weighing mechanism is located between the second lifting frame and the second base and can move in the first direction within the first through hole. In some embodiments, the first lifting frame is located above the first base and has a first through hole penetrating in a first direction, the second lifting frame is located on the upper side of the first lifting frame, and the weighing mechanism is located between the second lifting frame and the second base and can move in the first direction within the first through hole.

[0021] In the embodiment, the first lifting frame is arranged on the side of the second lifting frame, and the weighing mechanism moves in the first direction in the first through hole of the first lifting frame. This structure can meet the requirements of lifting and lowering the object on the conveying line and weighing the object during lifting, and has compact structure and smaller space occupation.

[0022] In some embodiments, the first lifting assembly further comprises:

[0023] A plurality of second supporting protrusions are arranged at each corner of the first lifting frame and configured to support the bottom of the object to be weighed.

[0024] In the embodiment, the support of the bottom of the object by the plurality of second supporting protrusions can reduce or eliminate the requirement for flatness of the bottom of the object, which is conducive to simplifying the support structure, expanding the support range of the object, and improving the support stability.

[0025] In some embodiments, the first lifting assembly further comprises:

[0026] A plurality of second sensors are arranged at each corner of the first lifting frame and configured to detect the position and / or inclination of the bottom of the object to be weighed.

[0027] In the embodiment, the sensing of the bottom of the object to be weighed by the plurality of second sensors arranged at each corner of the first lifting frame can realize the position detection and / or inclination detection of the object, so as to timely perform the weighing operation and pose adjustment, thereby achieving faster and more stable and reliable lifting or lowering of the object.

[0028] In some embodiments, the second lifting frame has a second through hole penetrating in the first direction, and the first lifting assembly further comprises:

[0029] A lifting positioning pin is arranged on the first lifting frame and penetrates through the second through hole, and is configured to position the bottom of the object to be weighed.

[0030] In the embodiment, the lifting positioning pin can penetrate through the second through hole to position the bottom of the object, which not only improves the accuracy of weighing the object by positioning, but also avoids interference with the second lifting frame during positioning.

[0031] In some embodiments, the weighing device further comprises:

[0032] A first guide mechanism is connected with the first base and the first lifting frame respectively and is configured to guide the first lifting frame to move linearly relative to the first base in the first direction.

[0033] In the embodiment, the first guide mechanism can guide the first jacking frame to move linearly relative to the first base in the first direction, so that the first jacking drive element can more stably realize the jacking or lowering of the first jacking frame relative to the first base under the guidance of the first guide mechanism when driving the first jacking frame.

[0034] In some embodiments, the first guide mechanism comprises:

[0035] a plurality of first guide sleeves fixedly connected with the first base;

[0036] a plurality of first guide columns having first ends fixedly connected with the first jacking frame,

[0037] wherein the plurality of first guide columns correspond one-to-one to the plurality of first guide sleeves and are respectively arranged in the plurality of first guide sleeves.

[0038] In the embodiment, the first guide column slides in the first guide sleeve to realize reliable linear guidance. The sliding fit structure of the plurality of first guide sleeves and the plurality of first guide columns is arranged to enable the first base and the first jacking frame to realize reliable guidance at multiple positions, thereby smoothly and stably realizing the jacking and lowering of the first jacking frame.

[0039] In some embodiments, the plurality of first guide columns comprises at least one group of first guide columns, and the first guide mechanism further comprises:

[0040] at least one first connecting rod corresponding one-to-one to the at least one group of first guide columns,

[0041] wherein the second ends of all the first guide columns in each group of first guide columns are fixedly connected with the corresponding first connecting rod.

[0042] In the embodiment, the first guide mechanism can comprise one group of first guide columns or multiple groups of first guide columns. Each first connecting rod can be fixedly connected with the corresponding group of first guide columns. In this way, the first connecting rod can enable all the first guide columns in the corresponding group to move relative to the first guide sleeve at substantially the same speed and substantially the same acceleration, thereby enabling the movement guidance of the plurality of first bases and the first jacking frames at multiple positions to obtain better consistency.

[0043] In some embodiments, the first guide mechanism includes two groups of first guide columns and two first connecting rods, the first lifting assembly includes two first lifting driving elements, the two first lifting driving elements are arranged in a second direction, the weighing mechanism is located between the two first lifting driving elements in the second direction, and is located between the two groups of first guide columns in the second direction, each group of first guide columns includes two first guide columns arranged in a third direction, the first lifting driving elements are located between the two first guide columns in the third direction, each first connecting rod is fixedly connected with a corresponding group of first guide columns and avoids the first lifting driving elements, wherein the second direction and the third direction are perpendicular to the first direction, and the second direction is perpendicular to the third direction.

[0044] In the present embodiment, each group of the two groups of first guide columns includes two first guide columns arranged in the second direction and the third direction, thereby forming an array arrangement. The weighing mechanism is located between the two first lifting driving elements in the second direction. In this way, the driving forces of the two first lifting driving elements can more evenly share the downward pressure of the object on the weighing mechanism. The weighing mechanism is also located between the two groups of first guide columns in the second direction, and the first lifting driving elements are located between the two first guide columns in the third direction, so that the driving and guiding are more balanced. The first connecting rod is fixedly connected with a corresponding group of first guide columns and avoids the first lifting driving elements, thereby realizing synchronous guiding at each position while reducing the risk of interference with the first lifting driving elements.

[0045] In some embodiments, the weighing device further includes:

[0046] A second guide mechanism is connected with the second base and the first lifting frame, and is configured to guide the second base to move linearly relative to the first lifting frame in a first direction.

[0047] In the present embodiment, the second guide mechanism can guide the second base to move linearly relative to the first lifting frame in the first direction, so that the second lifting driving element can more stably realize the lifting or lowering of the second base relative to the first lifting frame under the guidance of the second guide mechanism when driving the second base.

[0048] In some embodiments, the second guide mechanism includes:

[0049] A plurality of second guide sleeves are fixedly connected with the second base;

[0050] A plurality of second guide columns have a first end fixedly connected with the first lifting frame,

[0051] The plurality of second guide columns correspond one-to-one to the plurality of second guide sleeves and are respectively arranged in the plurality of second guide sleeves.

[0052] In the embodiment, the second guide columns slide in the second guide sleeves to achieve reliable linear guiding. The sliding fit structure of the plurality of groups of second guide sleeves and second guide columns is arranged to enable the second base and the first jacking frame to achieve reliable guiding at multiple positions, thereby smoothly and stably achieving jacking and lowering of the second base.

[0053] In some embodiments, the plurality of second guide columns includes at least one group of second guide columns, and the second guiding mechanism further includes:

[0054] at least one second connecting rod corresponding one-to-one to the at least one group of second guide columns,

[0055] wherein the second ends of all second guide columns in each group of second guide columns are fixedly connected to the corresponding second connecting rod.

[0056] In the embodiment, the second guiding mechanism can include one group of second guide columns or multiple groups of second guide columns. Each second connecting rod can be fixedly connected to the corresponding group of second guide columns. In this way, the second connecting rod enables all second guide columns in the corresponding group to move relative to the second guide sleeve at substantially the same speed and substantially the same acceleration, thereby achieving better consistency in the movement guiding of the multiple second bases and the first jacking frame at multiple positions.

[0057] In some embodiments, the second guiding mechanism includes two groups of second guide columns and two second connecting rods, the second jacking assembly includes two second jacking driving elements, the two second jacking driving elements are located between the two groups of second guide columns along a second direction and are arranged in a third direction, the weighing mechanism is located between the two second jacking driving elements along the third direction, each group of second guide columns includes two second guide columns, the two second guide columns are arranged in the third direction, each second connecting rod is fixedly connected to the corresponding group of second guide columns, wherein the second direction and the third direction are perpendicular to the first direction, and the second direction is perpendicular to the third direction.

[0058] In the embodiment, each of the two groups of second guide columns comprises two second guide columns, which are arranged in the second direction and the third direction, thereby forming an array arrangement. The weighing mechanism is located between the two second jacking driving elements in the third direction. In this way, the driving force of the two second jacking driving elements can more evenly share the downward pressure of the object on the weighing mechanism. The two second jacking driving elements are located between the two groups of second guide columns in the second direction, so that the driving and guiding are more balanced. The second connecting rod is fixedly connected with the corresponding group of second guide columns to realize synchronous guiding in each position.

[0059] In some embodiments, the first direction is parallel to the vertical direction.

[0060] In the embodiment, by setting the first direction parallel to the vertical direction, the components in the weighing device can move upward or downward in the vertical direction, which is beneficial to reduce the space occupation in the horizontal direction.

[0061] In some embodiments, the weighing device further comprises:

[0062] a blocking assembly located at least one side of the first jacking assembly in the second direction, configured to block the object being weighed,

[0063] wherein the second direction is the direction in which the object enters the weighing area of the weighing device.

[0064] In the embodiment, for the object conveyed on the conveying line, the blocking assembly can block the object entering the weighing area of the weighing device from continuing to advance, so as to be conveyed to the next target area by the conveying line after the weighing is completed.

[0065] In some embodiments, the blocking assembly comprises:

[0066] a third base and a fourth base located at the front side and the rear side of the first base in the second direction, respectively;

[0067] an active blocking mechanism having a first blocking piece and being arranged at the third base, configured to actively switch the first blocking piece between a blocking position and a non-blocking position;

[0068] a passive blocking mechanism having a second blocking piece and being arranged at the fourth base, configured to, in response to the abutting action of the object in the second direction, make the second blocking piece leave the blocking position, and after the object passes the second blocking piece, block the object through the second blocking piece in the opposite direction of the second direction.

[0069] In the embodiment, the third base and the fourth base are respectively arranged on the front side and the rear side of the first base along the second direction, and the active blocking mechanism and the passive blocking mechanism are respectively arranged on the third base and the fourth base, so that the object on the conveying line can enter and stay in the weighing area for weighing, and then leave the weighing area after the weighing is completed, thereby ensuring the stability of the weighing process.

[0070] In some embodiments, the active blocking mechanism further comprises:

[0071] The first mounting seat is fixedly arranged on the third base, and the first blocking piece is hinged to the first mounting seat;

[0072] The blocking piece driving element is drivingly connected to the first blocking piece and is configured to drive the first blocking piece to rotate relative to the first mounting seat so as to switch between the blocking position and the non-blocking position.

[0073] In the embodiment, the first blocking piece is driven by the blocking piece driving element to rotate and actively switch between the blocking position and the non-blocking position, so that the entering and leaving of the object relative to the weighing area is more controllable.

[0074] In some embodiments, the passive blocking mechanism further comprises:

[0075] The second mounting seat is fixedly arranged on the fourth base, and the second blocking piece is hinged to the second mounting seat;

[0076] The elastic element is connected to the second blocking piece and is configured to be compressed when the second blocking piece is subjected to the abutting action in the second direction so as to make the second blocking piece leave the blocking position, and to be reset when not subjected to the abutting action in the second direction so as to make the second blocking piece block the object in the opposite direction of the second direction.

[0077] In the embodiment, the second blocking piece is passively switched between the blocking position and the non-blocking position by the one-way extrusion of the object on the second blocking piece and the elastic force of the elastic element on the second blocking piece hinged to the second mounting seat, so as to realize the passing and blocking of the object while reducing energy consumption.

[0078] In some embodiments, the object comprises a tray and a battery module placed in the tray; and the weighing device further comprises:

[0079] The grabbing mechanism is arranged adjacent to the first lifting assembly and is configured to grab the battery module in the tray, so that the weighing mechanism weighs the tray with the battery module or the tray from which the battery module has been taken.

[0080] In the present embodiment, the accurate measurement of the weight of the battery module can be realized by the grasping action of the grasping mechanism on the battery module and the multiple weighing of the weighing mechanism, thereby simplifying the weighing process and saving the cost of the required equipment.

[0081] In some embodiments, the weighing device further comprises:

[0082] An information identifying element is arranged on the first or second jacking assembly and configured to identify the information of the object. BRIEF DESCRIPTION OF DRAWINGS

[0083] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0084] The present disclosure can be more clearly understood and appreciated from the following detailed description, taken in conjunction with the following drawings of which:

[0085] Figure 1 is a schematic diagram of the mounting structure of some embodiments of the weighing device according to the present disclosure;

[0086] Figure 2 is a schematic diagram of the structure of other embodiments of the weighing device according to the present disclosure;

[0087] Figure 3 is a schematic diagram of the structure of the first jacking assembly in an embodiment of the weighing device according to the present disclosure;

[0088] Figure 4 is a schematic diagram of the structure of the second jacking assembly in an embodiment of the weighing device according to the present disclosure;

[0089] Figure 5 is a schematic diagram of the structure of the mounting structure, the first jacking assembly and the second jacking assembly in some embodiments of the weighing device according to the present disclosure, viewed from a horizontal perspective.

[0090] It should be understood that the dimensions of the various parts shown in the drawings are not drawn to scale. In addition, the same or similar reference numerals indicate the same or similar components.

[0091] BRIEF DESCRIPTION OF DRAWINGS

[0092] 10, first jacking assembly; 11, first base; 12, first jacking frame; 121, first through hole; 13, first jacking drive element; 14, second support bump; 15, second sensor; 16, jacking positioning pin;

[0093] 20, second jacking assembly; 21, second base; 22, weighing mechanism; 221, electronic scale; 222, second jacking frame; 222a, second through hole; 223, limiting protrusion; 224, first supporting protrusion; 225, first sensor; 23, second jacking driving element;

[0094] 30, first guiding mechanism; 31, first guiding sleeve; 32, first guiding column; 33, first connecting rod;

[0095] 40, second guiding mechanism; 41, second guiding sleeve; 42, second guiding column; 43, second connecting rod;

[0096] 50, blocking assembly; 51, third base; 52, fourth base; 53, active blocking mechanism; 531, first blocking piece; 532, first mounting seat; 533, blocking piece driving element; 54, passive blocking mechanism; 541, second blocking piece; 542, second mounting seat; 543, elastic element;

[0097] 60, grabbing mechanism; 61, end effector;

[0098] 70, information identifying element;

[0099] dr1, first direction; dr2, second direction; dr3, third direction; tr, tray; bm, battery module. DETAILED DESCRIPTION

[0100] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses, except as described by the appended claims. The present disclosure can be implemented in numerous different forms, as is desired for specific applications. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of components and steps set forth in these embodiments, the components of materials, numerical expressions, and numerical values are to be interpreted as merely exemplary, rather than a limitation, unless specifically stated otherwise.

[0101] The "first", "second", and similar words used in the present disclosure do not indicate any order, number, or importance, but are only used to distinguish different parts. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right", and the like are only used to indicate relative positional relationships, which may also change accordingly when the absolute position of the described object changes.

[0102] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be or can not be an intervening device between the specific device and the first device or the second device. When it is described that a specific device is connected to another device, the specific device can be directly connected to the another device without an intervening device, or can not be directly connected to the another device with an intervening device.

[0103] All the terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as understood by those skilled in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that the terms defined in general dictionaries should be interpreted in the meanings consistent with the meanings in the context of related technologies, and should not be interpreted in idealized or excessively formalized meanings, unless otherwise explicitly defined herein.

[0104] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification where appropriate.

[0105] In the embodiments of the present disclosure, the weighing device can be used for weighing objects such as workpieces, semi-finished products, finished products, etc. For example, in the production process of a battery, the weighing device can be used for weighing a battery monomer, a battery module, or a battery pack, so as to realize processes such as weight consistency of the battery module, quality control, defect inspection, etc.

[0106] Taking a battery module carried by a tray as an example, in some related technologies, the battery module is transported together with the tray on a conveying line to an area where a weighing process is located, the battery module is grabbed from the tray on the line by a three-axis gantry robot to a weighing platform, and after being weighed by the weighing platform, the battery module is grabbed by the robot from the weighing platform and placed back to the tray on the line.

[0107] It is found through research that this way needs cooperation of a robot, a positioning device, a weighing platform, and other equipment, and a large number of equipment and a large space are occupied, resulting in a relatively high cost. The weighing process is complex and inefficient, resulting in a relatively low production efficiency.

[0108] Therefore, the embodiments of the present disclosure provide a weighing device, which is beneficial to improve the weighing efficiency.

[0109] In one aspect of the present disclosure, a weighing device is provided for weighing an object conveyed on a conveying line, comprising:

[0110] The first jacking assembly comprises a first base, a first jacking frame, and a first jacking driving element, the first jacking driving element is connected with the first base and the first jacking frame respectively, and is configured to drive the first jacking frame to jack up or descend relative to the first base.

[0111] a second lifting assembly comprising a second base, a weighing mechanism and a second lifting driving element, the weighing mechanism is arranged on the second base and is configured to weigh an object supported by the weighing mechanism, the second lifting driving element is connected with the second base and the first lifting frame respectively and is configured to drive the second base to lift or descend relative to the first lifting frame so as to support the object by the first lifting frame or the weighing mechanism.

[0112] In the embodiment, the first lifting frame is driven to lift or descend relative to the first base by the first lifting driving element of the first lifting assembly, so as to separate or return the object to be weighed from the conveying line, and the second base is driven to lift or descend relative to the first lifting frame by the second lifting driving element of the second lifting assembly, so as to support the object by the first lifting frame or the weighing mechanism, thereby enabling the weighing mechanism to weigh the object supported thereby, which enables the object on the conveying line to be lifted to implement the weighing process and returned to the conveying line, saves the time consumed by the equipment required for weighing the object after moving the object away from the conveying line and returning the object to the conveying line and the weighing process, and improves the weighing efficiency.

[0113] Figure 1 is a schematic view of a mounting structure according to some embodiments of the weighing device of the present disclosure.

[0114] With reference to Figure 1 , the embodiment of the present disclosure provides a weighing device for weighing an object on a conveying line, comprising a first lifting assembly 10 and a second lifting assembly 20. The first lifting assembly 10 comprises a first base 11, a first lifting frame 12 and a first lifting driving element 13, the first lifting driving element 13 is connected with the first base 11 and the first lifting frame 12 respectively and is configured to drive the first lifting frame 12 to lift or descend relative to the first base 11. The second lifting assembly 20 comprises a second base 21, a weighing mechanism 22 and a second lifting driving element 23, the weighing mechanism 22 is arranged on the second base 21 and is configured to weigh an object supported by the weighing mechanism 22, the second lifting driving element 23 is connected with the second base 21 and the first lifting frame 12 respectively and is configured to drive the second base 21 to lift or descend relative to the first lifting frame 12, so as to support the object by the first lifting frame 12 or the weighing mechanism 22.

[0115] The first base 11 can be mounted on a rack in a region where the weighing process of the conveying line is located, and its structure can adopt various forms, for example Figure 1The rectangular flat plate structure shown in the figure and the L-shaped support feet arranged at the four corners of the rectangular flat plate structure. The space below the rectangular flat plate structure is formed by the L-shaped support feet and the rectangular flat plate structure, so as to accommodate the components such as the driving mechanism and the guide mechanism and avoid the related structures of the conveying line.

[0116] The first lifting frame 12 can be partially or entirely arranged on the upper side of the first base 11 and lifted or lowered under the driving action of the first lifting driving element 13. The first lifting frame 12 can be used to support the object to be weighed, and can also support the components of the second lifting assembly 20 through the connection with the second base 21. The first lifting driving element 13 can adopt a driving element capable of adjusting the height position of the first lifting frame 12 relative to the first base 11, such as a pneumatic cylinder, a motor, a hydraulic cylinder, etc.

[0117] The weighing mechanism 22 can realize the weighing of the weight of the object supported thereby, which can adopt an electronic scale or other devices capable of weighing the weight. The second base 21 can be connected with the second lifting driving element 23, and the structure thereof can adopt various forms, for example Figure 1 The rectangular flat plate structure shown in the figure, etc.

[0118] The second lifting driving element 23 can drive the second base 21 to lift or lower relative to the first lifting frame 12, so that the object is supported by the first lifting frame 12 or the weighing mechanism 22, so that the measurement of the weight of the object can be carried out when the object is supported by the weighing mechanism 22, and the weighing mechanism 22 does not need to support the object for a long time when the object is supported by the first lifting frame 12, which is beneficial to reduce the failure rate of the weighing mechanism 22. The second lifting driving element 23 can adopt a driving element capable of adjusting the height position of the second base 21 relative to the first lifting frame 12, such as a pneumatic cylinder, a motor, a hydraulic cylinder, etc.

[0119] In the present embodiment, the first lifting frame 12 is driven by the first lifting driving element 13 of the first lifting assembly 10 to lift or lower relative to the first base 11, so as to separate or return the object to be weighed from the conveying line, and the second base 21 is driven by the second lifting driving element 23 of the second lifting assembly 20 to lift or lower relative to the first lifting frame 12, so that the object is supported by the first lifting frame 12 or the weighing mechanism 22, thereby enabling the weighing mechanism 22 to weigh the object supported thereby, so that the object on the conveying line is lifted to realize the weighing process and returned to the conveying line, compared with the way of transferring the object to be weighed by a robot to a weighing platform outside the conveying line for weighing, and then returning to the conveying line. The present embodiment can save the time consumed by the equipment required for moving the object away from the conveying line, weighing and returning to the conveying line, thereby improving the weighing efficiency.

[0120] In addition, since the object is lifted to realize the weighing process and return to the conveying line, the space occupied by the equipment for arranging the weighing platform, positioning device and robot for transferring the object in the horizontal direction is saved, and the cost of the related equipment is saved, so as to save the space occupation and improve the weighing efficiency.

[0121] Figure 2 is a structural schematic diagram of another embodiment of the weighing device according to the present disclosure.

[0122] Reference Figure 2 In some embodiments, the object includes a tray tr and a battery module bm placed in the tray tr. The weighing device further includes a grabbing mechanism 60. The grabbing mechanism 60 is arranged adjacent to the first lifting assembly 10 and is configured to grab the battery module bm in the tray tr so that the weighing mechanism 22 weighs the tray tr with the battery module bm or the tray tr without the battery module bm.

[0123] The grabbing mechanism 60 can include an end effector 61 capable of grabbing the battery module bm, such as a clamp or a suction cup. The grabbing mechanism 60 can enable the weighing mechanism 22 to realize the weighing operation of the tray tr with the battery module bm and the tray tr without the battery module bm by grabbing and not grabbing the battery module bm, including placing the battery module in the tray tr from the grabbing state.

[0124] In this way, when the weighing mechanism 22 weighs the tray tr with the battery module bm, the weight W1 of the tray tr and the weight W2 of the battery module bm are obtained, i.e. the total weight W0, and the battery module bm is grabbed by the grabbing mechanism 60 to a position away from the tray tr (such as above, aside, etc. of the tray tr), at which time the weighing obtains the weight W1 of the tray tr, so that the weight W2 of the battery module bm can be obtained by simple calculation (such as W2=W0-W1).

[0125] The grabbing mechanism 60 only needs to grab and move the battery module bm away from the tray tr so as not to affect the weighing of the tray tr, without the need to transfer the battery module bm in a large range, thereby reducing the functional requirements of the grabbing mechanism 60. The grabbing mechanism 60 can only perform grabbing and lifting operations, and can use a robot capable of performing more complex motion requirements, or use a simple lifting mechanism.

[0126] In the present embodiment, the grabbing of the battery module bm by the grabbing mechanism 60 can realize accurate measurement of the weight of the battery module bm in cooperation with multiple weighing of the weighing mechanism 22, thereby simplifying the weighing process and saving the cost of the required equipment.

[0127] Figure 3 This is a structural schematic diagram of the first lifting component in the embodiment of the weighing device according to this disclosure. Figure 4 This is a structural schematic diagram of the second lifting component in the embodiment of the weighing device according to this disclosure. Figure 5 This is a schematic diagram of the installation structure, the first lifting assembly, and the second lifting assembly from a horizontal perspective, according to some embodiments of the weighing device of this disclosure.

[0128] Figure 5 Image (a) illustrates the overall structure of the weighing device after installation from a horizontal perspective. Figure 5 In (a), the arrangement of the elastic element 543 inside the second mounting base 542 is indicated by a dashed line. Figure 5 (b) illustrates the structure and relative position of the first lifting assembly 10 and the blocking assembly 50. Figure 5 (c) illustrates the structure of the second lifting component 20. Figure 5 (b) and (c) may be regarded by reference as Figure 5 A schematic diagram of the decomposition of (a).

[0129] refer to Figure 1 , Figure 4 and Figure 5 In some embodiments, the weighing mechanism 22 includes an electronic scale 221 and a second lifting frame 222. The electronic scale 221 is mounted on the upper surface of the second base 21. The second lifting frame 222 is disposed on the electronic scale 221 and configured to support the object to be weighed.

[0130] The electronic scale 221 can weigh objects relatively accurately. In addition to considering the accuracy of weighing, factors such as the stability of the object during the weighing process and the uniformity of the force acting on the electronic scale 221 are also involved. Therefore, a second lifting frame 222 is set on the electronic scale 221 to support the object being weighed. The second lifting frame 222 is used to achieve functions such as improving the stability and uniformity of weighing, so that there is no need to design a dedicated electronic scale 221 or to make complex assembly or modification to the electronic scale 221.

[0131] refer to Figure 4 and Figure 5 In some embodiments, the weighing mechanism 22 further includes a limiting protrusion 223. The limiting protrusion 223 is disposed on the surface of the second lifting frame 222 and is configured to limit the bottom of the object being weighed.

[0132] The limiting protrusions 223 are upwardly protruding relative to the surface of the second jacking frame 222, and can limit the bottom of the object being weighed, where the limiting direction can include at least one direction parallel to the surface of the second jacking frame 222. For example, the bottom of some trays used to carry battery modules is provided with a support structure with recesses, such as a cross-shaped support frame. The weighing mechanism 22 can include one or more limiting protrusions 223 according to the needs of the limiting direction. In Figure 4 some embodiments, the weighing mechanism 22 includes four limiting protrusions 223 arranged in a 2*2 array. In other embodiments, more or fewer limiting protrusions 223 can be included, and the limiting protrusions 223 can be arranged in an array, alternately, in a straight line, etc.

[0133] In the present embodiment, embedding the limiting protrusions 223 into the recesses of the bottom of the object can limit the lateral movement of the object relative to the second jacking frame 222, reducing the risk of tipping or falling due to lateral movement of the object relative to the second jacking frame 222.

[0134] Referring to Figure 4 and Figure 5 , in some embodiments, the weighing mechanism 22 further includes a plurality of first support protrusions 224. The plurality of first support protrusions 224 are arranged at the respective corners of the second jacking frame 222 and are configured to support the bottom of the object being weighed.

[0135] The first support protrusions 224 can support the bottom of the object in the height direction. By arranging a plurality of first support protrusions 224 at the respective corners of the second jacking frame 222, the support range of the weighing mechanism 22 on the object can be expanded, and the stability during the weighing process of the object can be improved. According to needs, the first support protrusions 224 can be made of a wear-resistant material different from the second jacking frame 222, such as a metal or alloy material, to improve its performance in resisting wear during supporting the object.

[0136] In the present embodiment, the support of the bottom of the object by the plurality of first support protrusions 224 can reduce or eliminate the requirement for the flatness of the bottom of the object, facilitating the simplification of the support structure and the expansion of the support range of the weighing mechanism 22 on the object, and improving the support stability.

[0137] Referring to Figure 4 and Figure 5 , in some embodiments, the weighing mechanism 22 further includes a plurality of first sensors 225. The plurality of first sensors 225 are arranged at the respective corners of the second jacking frame 222 and are configured to detect the position and / or inclination of the bottom of the object being weighed.

[0138] The first sensors 225 can include distance sensors capable of sensing the distance from the bottom of the object, such as infrared, ultrasonic, laser ranging sensors, etc., and can also include proximity sensors capable of sensing whether the object is close, such as capacitive, inductive, infrared proximity sensors, etc. A plurality of first sensors 225 are arranged at each corner of the second lifting frame 222, which can sense different positions of the bottom of the object being weighed. The results of distance or proximity sensed by each sensor can be used for object positioning detection and object tilt detection.

[0139] For example, if the proximity sensors at the four corners of the rectangular bottom of the object all sense the object, it can be determined that the object is in place. If some proximity sensors sense the object and some proximity sensors do not sense the object, it can be determined that the object is not in place. For another example, if the distance sensors at the four corners of the rectangular bottom of the object all sense the object within a set range (e.g., <= 2 mm), it can be determined that the object is in place and not tilted. If some distance sensors sense the object within the set range and some distance sensors sense the object outside the set range, it can be determined that the object is tilted.

[0140] In the present embodiment, the sensing of the bottom of the object being weighed by the plurality of first sensors 225 arranged at each corner of the second lifting frame 222 can achieve object positioning detection and / or tilt detection, so that the object can be lifted and lowered stably and reliably during the weighing process, thereby achieving more reliable and accurate weighing.

[0141] Reference Figure 1 And Figure 3 In some embodiments, the first lifting frame 12 is located above the first base 11 and has a first through hole 121 extending in a first direction dr1, the second lifting frame 222 is located on the upper side of the first lifting frame 12, and the weighing mechanism 22 is located between the second lifting frame 222 and the second base 21 and can move in the first direction dr1 within the first through hole 121.

[0142] The first direction dr1 can be parallel to the vertical direction, so that the weighing mechanism 22 moves upward or downward in the vertical direction within the first through hole 121. By arranging the second lifting frame 222 on the upper side of the first lifting frame 12, some mechanisms such as limiting, positioning, detection, etc. can be conveniently arranged on the second lifting frame 222 to cooperate with the weighing process while the second lifting frame 222 stably supports the object. In other embodiments, the first direction dr1 can also be obliquely intersected with the vertical direction at an acute angle or an obtuse angle.

[0143] In the embodiment, the first jacking frame 12 is arranged on the upper side of the second jacking frame 222, and the weighing mechanism 22 moves along the first direction dr1 in the first through hole 121 of the first jacking frame 12. This structure can meet the requirements of jacking and lowering the object on the conveying line and weighing the object during jacking, and has a compact structure and occupies less space.

[0144] Reference Figure 3 And Figure 5 In some embodiments, the first jacking assembly 10 further comprises a plurality of second supporting blocks 14. The plurality of second supporting blocks 14 are arranged at the corners of the first jacking frame 12 and are configured to support the bottom of the object to be weighed.

[0145] The second supporting blocks 14 can support the bottom of the object in the height direction. The plurality of second supporting blocks 14 arranged at the corners of the first jacking frame 12 are located outside the second jacking frame 222 so as not to interfere with the second jacking frame 222 when supporting the object. In addition, by arranging the plurality of second supporting blocks 14 at the corners of the first jacking frame 12, the supporting range of the object can be expanded, and the stability during jacking of the object can be improved. According to needs, the second supporting blocks 14 can be made of a wear-resistant material different from the first jacking frame 12, such as metal or alloy material, to improve the wear resistance during supporting of the object.

[0146] In the embodiment, the support of the bottom of the object by the plurality of second supporting blocks 14 can reduce or eliminate the requirement for the flatness of the bottom of the object, which is conducive to simplifying the support structure, expanding the supporting range of the object, and improving the stability of the support.

[0147] Reference Figure 3 And Figure 5 In some embodiments, the first jacking assembly 10 further comprises a plurality of second sensors 15. The plurality of second sensors 15 are arranged at the corners of the first jacking frame 12 and are configured to detect the position and / or inclination of the bottom of the object to be weighed.

[0148] The second sensors 15 can include distance sensors, such as infrared, ultrasonic, and laser ranging sensors, which can sense the distance from the bottom of the object. The second sensors 15 can also include proximity sensors, such as capacitive, inductive, and infrared proximity sensors, which can sense whether the object is close. The plurality of second sensors 15 are arranged at the corners of the first jacking frame 12 and can sense different positions of the bottom of the object to be weighed. The distance or proximity results sensed by each sensor can be used for position detection of the object and inclination detection of the object.

[0149] For example, if all proximity sensors located at the four corners of the bottom of the object rectangle sense the object, it can be determined that the object is in place; if some proximity sensors sense the object and some proximity sensors do not sense the object, it can be determined that the object is not in place. For another example, if all distance sensors located at the four corners of the bottom of the object rectangle sense the object within a set range (for example, <= 2mm), it can be determined that the object is in place and not tilted; if some distance sensors sense the object within the set range and some proximity sensors sense the object outside the set range, it can be determined that the object is tilted.

[0150] In the embodiment, the sensing of the bottom of the object to be weighed by the plurality of second sensors 15 arranged at the respective corners of the first lifting frame 12 can realize the in-place detection and / or tilt detection of the object, so as to timely perform the weighing operation and the pose adjustment, thereby stabilizing the object more quickly and reliably during the lifting of the object or the lowering of the object.

[0151] Reference is made to Figure 1 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the second lifting frame 222 has a second through hole 222a penetrating in the first direction dr1. The first lifting assembly 10 further comprises a lifting positioning pin 16. The lifting positioning pin 16 is arranged on the first lifting frame 12 and penetrates through the second through hole 222a, and is configured to position the bottom of the object to be weighed.

[0152] The bottom of the object can be provided with a positioning hole matched with the lifting positioning pin 16, for example, a positioning hole is arranged at the bottom of the tray. Through the cooperation of the lifting positioning pin 16 and the positioning hole, the object can be weighed in an accurate position relative to the weighing device, thereby reducing the weighing error caused by, for example, the center of gravity of the object being offset.

[0153] In the embodiment, the lifting positioning pin 16 can penetrate through the second through hole 222a to realize the positioning of the bottom of the object, which not only can improve the accuracy of the weighing of the object through positioning, but also can avoid interference with the second lifting frame 222 when positioning.

[0154] Reference is made to Figure 1 In some embodiments, the weighing device further comprises a first guide mechanism 30. The first guide mechanism 30 is connected with the first base 11 and the first lifting frame 12 respectively, and is configured to guide the first lifting frame 12 to move linearly relative to the first base 11 in the first direction dr1.

[0155] In the embodiment, the first guide mechanism 30 can guide the first lifting frame 12 to move linearly relative to the first base 11 along the first direction dr1, so that the first lifting driving element 13 can more stably realize the lifting or lowering of the first lifting frame 12 relative to the first base 11 under the guidance of the first guide mechanism 30 when driving the first lifting frame 12.

[0156] With reference to Figure 3 And Figure 5 In some embodiments, the first guide mechanism 30 includes a plurality of first guide sleeves 31 and a plurality of first guide columns 32. The plurality of first guide sleeves 31 are fixedly connected with the first base 11, and the plurality of first guide columns 32 have first ends fixedly connected with the first lifting frame 12. The plurality of first guide columns 32 correspond one-to-one to the plurality of first guide sleeves 31 and are respectively arranged in the plurality of first guide sleeves 31.

[0157] The first guide column 32 slides in the first guide sleeve 31 to realize reliable linear guidance. The sliding fit structure of the plurality of first guide sleeves 31 and the plurality of first guide columns 32 is arranged to enable the first base 11 and the first lifting frame 12 to realize reliable guidance at multiple positions, thereby smoothly and stably realizing the lifting and lowering of the first lifting frame 12.

[0158] With reference to Figure 3 In some embodiments, the plurality of first guide columns 32 includes at least one group of first guide columns 32, and the first guide mechanism 30 further includes at least one first connecting rod 33 corresponding one-to-one to the at least one group of first guide columns 32. The second ends of all the first guide columns 32 in each group of first guide columns 32 are fixedly connected with the corresponding first connecting rod 33.

[0159] The first guide mechanism 30 can include one group of first guide columns 32 or multiple groups of first guide columns 32. Each first connecting rod 33 can be fixedly connected with the corresponding group of first guide columns 32. In this way, the first connecting rod 33 can enable all the first guide columns 32 in the corresponding group to move relative to the first guide sleeve at substantially the same speed and substantially the same acceleration, thereby enabling the plurality of first bases 11 and the first lifting frame 12 to have better consistency in movement guidance at multiple positions.

[0160] With reference to Figure 3In some embodiments, the first guiding mechanism 30 includes two groups of first guiding columns 32 and two first connecting rods 33, the first jacking assembly 10 includes two first jacking driving elements 13, the two first jacking driving elements 13 are arranged in a second direction dr2, the weighing mechanism 22 is located between the two first jacking driving elements 13 along the second direction dr2, and is located between the two groups of first guiding columns 32 along the second direction dr2, each group of first guiding columns 32 includes two first guiding columns 32 arranged in a third direction dr3, the first jacking driving element 13 is located between the two first guiding columns 32 along the third direction dr3, each first connecting rod 33 is fixedly connected with the corresponding group of first guiding columns 32 and avoids the first jacking driving element 13, wherein the second direction dr2 and the third direction dr3 are perpendicular to the first direction dr1, and the second direction dr2 is perpendicular to the third direction dr3.

[0161] The first direction dr1 can be parallel to the vertical direction, or obliquely intersected with the vertical direction at an acute angle or an obtuse angle. For the embodiment in which the first direction dr1 is parallel to the vertical direction, the second direction dr2 and the third direction dr3 are parallel to the horizontal plane and perpendicular to each other.

[0162] In Figure 3 , each group of the two groups of first guiding columns 32 includes two first guiding columns arranged in the second direction dr2 and the third direction dr3, thereby forming a 2*2 array arrangement. In Figure 1 , the weighing mechanism 22 is located between the two first jacking driving elements 13 along the second direction dr2. In this way, the driving forces of the two first jacking driving elements 13 can more evenly share the downward pressure of the object on the weighing mechanism. The weighing mechanism 22 is also located between the two groups of first guiding columns 32 along the second direction dr2, and the first jacking driving element 13 is located between the two first guiding columns 32 along the third direction dr3, so that the cooperation of driving and guiding is also more balanced. The first connecting rod 33 is fixedly connected with the corresponding group of first guiding columns 32 and avoids the first jacking driving element 13, thereby realizing synchronous guiding at each position while reducing the risk of interference with the first jacking driving element 13.

[0163] Referring to Figure 1 , in some embodiments, the weighing device further includes a second guiding mechanism 40. The second guiding mechanism 40 is connected with the second base 21 and the first jacking frame 12 respectively, and is configured to guide the second base 21 to move linearly relative to the first jacking frame 12 along the first direction dr1.

[0164] In the embodiment, the second guide mechanism 40 can guide the linear movement of the second base 21 relative to the first jacking frame 12 in the first direction dr1, so that the second jacking driving element 23 can more stably realize the jacking or lowering of the second base 21 relative to the first jacking frame 12 under the guidance of the second guide mechanism 40 when driving the second base 21.

[0165] With reference to Figure 4 and Figure 5 In some embodiments, the second guide mechanism 40 includes a plurality of second guide sleeves 41 and a plurality of second guide columns 42. The plurality of second guide sleeves 41 are fixedly connected with the second base 21. The plurality of second guide columns 42 have first ends fixedly connected with the first jacking frame 12, wherein the plurality of second guide columns 42 correspond to the plurality of second guide sleeves 41 one-to-one, and are respectively arranged in the plurality of second guide sleeves 41.

[0166] The second guide column 42 slides in the second guide sleeve 41 to realize reliable linear guidance. The sliding fit structure of the plurality of second guide sleeves 41 and the plurality of second guide columns 42 is arranged to enable the second base 21 and the first jacking frame 12 to realize reliable guidance at multiple positions, thereby smoothly and stably realizing the jacking and lowering of the second base 21.

[0167] With reference to Figure 4 In some embodiments, the plurality of second guide columns 42 includes at least one group of second guide columns 42, and the second guide mechanism 40 further includes at least one second connecting rod 43 corresponding to the at least one group of second guide columns 42. The second ends of all second guide columns 42 in each group of second guide columns 42 are fixedly connected with the corresponding second connecting rod 43.

[0168] The second guide mechanism 40 can include one group of second guide columns 42 or multiple groups of second guide columns 42. Each second connecting rod 43 can be fixedly connected with the corresponding group of second guide columns 42. In this way, the second connecting rod 43 can enable all second guide columns 42 in the corresponding group to move relative to the second guide sleeve 41 at substantially the same speed and substantially the same acceleration, thereby enabling the movement guidance of the plurality of second bases 21 and the first jacking frame 12 at multiple positions to obtain better consistency.

[0169] With reference to Figure 1 and Figure 4In some embodiments, the second guide mechanism 40 includes two sets of second guide posts 42 and two second connecting rods 43, the second lifting assembly 20 includes two second lifting drive elements 23, the two second lifting drive elements 23 are located between the two sets of second guide posts 42 along the second direction dr2 and are arranged at intervals along the third direction dr3, the weighing mechanism 22 is located between the two second lifting drive elements 23 along the third direction dr3, each set of second guide posts 42 includes two second guide posts 42, the two second guide posts 42 are arranged at intervals along the third direction dr3, each second connecting rod 43 is fixedly connected to the second guide posts 42 of the corresponding set, wherein the second direction dr2 and the third direction dr3 are both perpendicular to the first direction dr1, and the second direction dr2 is perpendicular to the third direction dr3.

[0170] The first direction dr1 can be parallel to the vertical direction, or it can be inclined to intersect the vertical direction at an acute or obtuse angle. In the embodiment where the first direction dr1 is parallel to the vertical direction, the second direction dr2 and the third direction dr3 are parallel to the horizontal plane and perpendicular to each other.

[0171] exist Figure 4 In the middle, each of the two sets of second guide pillars 42 includes two second guide pillars, arranged at intervals according to the second direction dr2 and the third direction dr3, thus forming a 2*2 array arrangement. Figure 1 In this configuration, the weighing mechanism 22 is positioned between the two second lifting drive elements 23 along the third direction dr3. This allows the driving force of the two second lifting drive elements 23 to more evenly distribute the downward pressure from the object on the weighing mechanism 22. Both second lifting drive elements 23 are positioned between the two sets of second guide posts 42 along the second direction dr2, resulting in a more balanced coordination between driving and guiding. The second connecting rod 43 is fixedly connected to the corresponding set of second guide posts 42 to achieve synchronous guidance at each position.

[0172] refer to Figure 1 In some embodiments, the first direction dr1 is parallel to the vertical direction.

[0173] In this embodiment, by setting the first direction dr1 to be parallel to the vertical direction, the components in the weighing device can move up or down in the vertical direction, which helps to reduce the space occupied in the horizontal direction.

[0174] refer to Figure 1 In some embodiments, the weighing device further includes a blocking component 50. The blocking component 50 is located on at least one side of the first lifting component 10 along a second direction dr2 and is configured to block the object being weighed, wherein the second direction dr2 is the direction in which the object enters the weighing area of ​​the weighing device.

[0175] In the present embodiment, the blocking assembly 50 can block the objects conveyed on the conveying line from advancing into the weighing area of the weighing device, so as to be conveyed to the next target area by the conveying line after the weighing is completed.

[0176] Reference Figure 3 and Figure 5 In some embodiments, the blocking assembly 50 comprises a third base 51, a fourth base 52, an active blocking mechanism 53 and a passive blocking mechanism 54. The third base 51 and the fourth base 52 are respectively located at the front side and the rear side of the first base 11 along the second direction dr2. The active blocking mechanism 53 has a first blocking piece 531 and is arranged at the third base 51, configured to actively switch the first blocking piece 531 between a blocking position and a non-blocking position. The passive blocking mechanism 54 has a second blocking piece 541 and is arranged at the fourth base 52, configured to, in response to the abutting action of the object in the second direction dr2, make the second blocking piece 541 leave the blocking position, and after the object passes the second blocking piece 541, block the object in the opposite direction of the second direction dr2 by the second blocking piece 541.

[0177] The third base 51 and the fourth base 52 can be mounted on the rack of the area where the weighing process of the conveying line is located, and the structure thereof can adopt various forms, such as the rectangular slat structure shown in Figure 1 and L-shaped support feet are arranged at both sides of the rectangular slat structure. The space under the rectangular slat structure is formed by the L-shaped support feet and the rectangular slat structure, so as to accommodate the components in the blocking assembly 50 and avoid the related structures of the conveying line.

[0178] The active blocking mechanism 53 can actively switch the first blocking piece 531 between the blocking position and the non-blocking position, so as to selectively realize the weighing or passing of the objects on the conveying line. The passive blocking mechanism 54 is arranged at the opposite side of the active blocking mechanism 53 along the second direction dr2 to realize the blocking of the objects, so as to avoid the objects from exiting the weighing area and affecting the weighing process.

[0179] In the present embodiment, the active blocking mechanism 53 and the passive blocking mechanism 54 are respectively arranged at the third base 51 and the fourth base 52 which are respectively located at the front side and the rear side of the first base 11 along the second direction dr2, so as to enable the objects on the conveying line to enter and stay in the weighing area for weighing, and leave the weighing area after the weighing is completed, thereby ensuring the stability of the weighing process.

[0180] Reference Figure 3 and Figure 5In some embodiments, the active blocking mechanism 53 further comprises a first mounting base 532 and a blocking member driving element 533. The first mounting base 532 is fixedly arranged on the third base 51, and the first blocking member 531 is hingedly connected to the first mounting base 532. The blocking member driving element 533 is drivingly connected to the first blocking member 531 and is configured to drive the first blocking member 531 to rotate relative to the first mounting base 532 so as to switch between the blocking position and the non-blocking position.

[0181] The first blocking member 531 is hingedly connected to the first mounting base 532 and rotates relative to the first mounting base 532 under the driving action of the blocking member driving element 533. The blocking member driving element 533 can be a cylinder, a motor, or other elements that can achieve driving action. The first blocking member 531 can be rotated to the blocking position to achieve the blocking effect on the object, or can be rotated to the non-blocking position, in which the object is not blocked by the first blocking member 531, so that the object can conveniently leave the weighing area.

[0182] In the present embodiment, the first blocking member 531 hingedly connected to the first mounting base 532 is driven by the blocking member driving element 533 to rotate and actively switch between the blocking position and the non-blocking position, so that the entering and leaving of the object relative to the weighing area is more controllable.

[0183] Reference Figure 3 and Figure 5 In some embodiments, the passive blocking mechanism 54 further comprises a second mounting base 542 and an elastic element 543. The second mounting base 542 is fixedly arranged on the fourth base 52, and the second blocking member 541 is hingedly connected to the second mounting base 542. The elastic element 543 is connected to the second blocking member 541 and is configured to be compressed when the second blocking member 541 is subjected to the abutting action in the second direction dr2 so that the second blocking member 541 leaves the blocking position, and to be reset when it is not subjected to the abutting action in the second direction dr2 so that the second blocking member 541 blocks the object in the opposite direction of the second direction dr2.

[0184] The second blocking member 541 is hingedly connected to the second mounting base 542 and can rotate relative to the second mounting base 542. The elastic element 543 can be a torsion spring, a leaf spring, or a spring. Figure 5The spring in (a) is blocked by being located in the second mounting seat 542, so its location is shown by a dashed line. When the object is to enter the weighing area along the second direction dr2 under the support of the elastic element 543, the second blocking piece 541 in the blocking position is extruded to rotate to the non-blocking position, and the elastic element 543 is compressed under the extrusion of the second blocking piece 541, so that the object can enter the weighing area. When the object passes through the second blocking piece 541, the elastic element 543 resets the second blocking piece 541 to the blocking position to prevent the object from returning in the original direction.

[0185] In the embodiment, the one-way extrusion of the object on the second blocking piece 541 and the elastic force of the elastic element 543 on the second blocking piece 541 hinged to the second mounting seat 542 can passively switch the blocking position and the non-blocking position of the second blocking piece 541, thereby reducing energy consumption while achieving the passing and blocking effects of the object.

[0186] With reference to Figure 1 , Figure 3 and Figure 5 , in some embodiments, the weighing device further comprises an information identification element 70. The information identification element 70 is arranged on the first lifting assembly 10 or the second lifting assembly 20 and is configured to identify the information of the object.

[0187] For the object, the information identification element 70 can identify the information of the whole object or part of the object during the weighing of the object, including identification data, source data, etc. Taking a tray tr carrying a battery module bm as an example, the information identification element 70 can be used to identify the information of the number and quantity of the battery module bm or the information of the number of the tray tr. The information identification element 70 can adopt an identifier based on infrared, image coding, radio frequency signals, etc., such as a code scanner, a radio frequency identifier, etc.

[0188] In the embodiment, the information identification element 70 arranged on the first lifting assembly 10 or the second lifting assembly 20 can identify the information of the object being weighed, and the association between the object information and the weighing result can be conveniently realized.

[0189] With reference to the foregoing embodiments and Figures 1-5 , the structure of the specific embodiments of the weighing device and the working process thereof will be described below.

[0190] The weighing device is used for weighing objects on a conveying line, which comprises a first lifting assembly 10, a second lifting assembly 20, a first guide mechanism 30, a second guide mechanism 40 and a blocking assembly 50. The first lifting assembly 10 comprises a first base 11, a first lifting frame 12 and a first lifting driving element 13 connected with the first base 11 and the first lifting frame 12 respectively and configured to drive the first lifting frame 12 to lift or lower relative to the first base 11.

[0191] The second lifting assembly 20 comprises a second base 21, a weighing mechanism 22 arranged on the second base 21 and configured to weigh objects supported by the weighing mechanism 22, and a second lifting driving element 23 connected with the second base 21 and the first lifting frame 12 respectively and configured to drive the second base 21 to lift or lower relative to the first lifting frame 12 so that the objects are supported by the first lifting frame 12 or the weighing mechanism 22.

[0192] The weighing mechanism 22 comprises an electronic scale 221 and a second lifting frame 222. The electronic scale 221 is mounted on the upper side surface of the second base 21. The second lifting frame 222 is arranged on the electronic scale 221 and configured to support the objects to be weighed.

[0193] The first lifting frame 12 is located above the first base 11 and has a first through hole 121 penetrating along a first direction dr1. The second lifting frame 222 is located on the upper side of the first lifting frame 12. The weighing mechanism 22 is located between the second lifting frame 222 and the second base 21 and can move in the first through hole 121 along the first direction dr1.

[0194] The weighing mechanism 22 further comprises a limiting protrusion 223 arranged on the surface of the second lifting frame 222, a plurality of first supporting protrusions 224 and a plurality of first sensors 225 arranged at each corner of the second lifting frame 222. The limiting protrusion 223 is used for limiting the bottom of the objects to be weighed. The plurality of first supporting protrusions 224 are used for supporting the bottom of the objects to be weighed. The plurality of first sensors 225 are used for position detection and / or inclination detection of the bottom of the objects to be weighed.

[0195] The first lifting assembly 10 further comprises a plurality of second supporting protrusions 14 and a plurality of second sensors 15 arranged at each corner of the first lifting frame 12. The plurality of second supporting protrusions 14 are used for supporting the bottom of the objects to be weighed. The plurality of second sensors 15 are used for position detection and / or inclination detection of the bottom of the objects to be weighed.

[0196] The second lifting frame 222 has a second through hole 222a through in the first direction dr1, and the first lifting assembly 10 further comprises a lifting positioning pin 16 arranged on the first lifting frame 12 and passing through the second through hole 222a, configured to position the bottom of the object to be weighed.

[0197] The first guide mechanism 30 is connected with the first base 11 and the first lifting frame 12 respectively, and is configured to guide the first lifting frame 12 to move linearly relative to the first base 11 in the first direction dr1. The second guide mechanism 40 is connected with the second base 21 and the first lifting frame 12 respectively, and is configured to guide the second base 21 to move linearly relative to the first lifting frame 12 in the first direction dr1.

[0198] The blocking assembly 50 comprises a third base 51, a fourth base 52, an active blocking mechanism 53 and a passive blocking mechanism 54. The third base 51 and the fourth base 52 are respectively located on the front side and the rear side of the first base 11 in the second direction dr2. The active blocking mechanism 53 has a first blocking piece 531 and is arranged on the third base 51, and is configured to actively switch the first blocking piece 531 between a blocking position and a non-blocking position. The passive blocking mechanism 54 has a second blocking piece 541 and is arranged on the fourth base 52, and is configured to make the second blocking piece 541 leave the blocking position in response to the abutting action of the object in the second direction dr2, and block the object in the opposite direction of the second direction dr2 through the second blocking piece 541 after the object passes through the second blocking piece 541.

[0199] The object comprises a tray tr and a battery module bm placed in the tray tr; the weighing device further comprises a grabbing mechanism 60 arranged adjacent to the first lifting assembly 10, configured to grab the battery module bm in the tray tr, so that the weighing mechanism 22 weighs the tray tr with the battery module bm or the tray tr from which the battery module bm has been taken away.

[0200] When the tray tr on the conveying line is conveyed to the weighing area, the front and rear of the tray tr are blocked by the active blocking mechanism 53 and the passive blocking mechanism 54, so that the tray tr is in place. The height position of the tray tr is raised by the lifting action of the first lifting assembly 10, so that it is away from the conveying line. Then, the height position of the tray tr is raised by the lifting action of the second lifting assembly 20, so that it is supported by the second lifting frame 222 and separated from the support of the first lifting frame 12, so that the weight is all on the electronic scale 221, so that the total weight M0 of the tray tr and the battery module bm is measured by the electronic scale 221. Then, the height position of the tray tr is lowered by the second lifting assembly 20, so that it is supported by the first lifting frame 12, and at this time the battery module bm is grabbed by the grabbing mechanism 60, so that it is away from the tray tr. Then, the height position of the tray tr is raised by the lifting action of the second lifting assembly 20, so that it is supported by the second lifting frame 222 and separated from the support of the first lifting frame 12, so that the weight is all on the electronic scale 221, so that the weight M1 of the tray tr itself is measured by the electronic scale 221. In this way, the weight M2 of the battery module bm can be calculated by M0 minus M1.

[0201] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0202] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A weighing device for weighing objects conveyed on a conveyor line, characterized in that, include: The first lifting assembly (10) includes a first base (11), a first lifting frame (12) and a first lifting drive element (13). The first lifting drive element (13) is connected to the first base (11) and the first lifting frame (12) respectively, and is configured to drive the first lifting frame (12) to lift or lower relative to the first base (11). and The second lifting assembly (20) includes a second base (21), a weighing mechanism (22), and a second lifting drive element (23). The weighing mechanism (22) is disposed on the second base (21) and configured to weigh an object supported by the weighing mechanism (22). The second lifting drive element (23) is connected to the second base (21) and the first lifting frame (12) respectively and is configured to drive the second base (21) to lift or lower relative to the first lifting frame (12) so that the object is supported by the first lifting frame (12) or the weighing mechanism (22).

2. The weighing device according to claim 1, characterized in that, The weighing mechanism (22) includes: An electronic scale (221) is mounted on the upper surface of the second base (21); and A second lifting frame (222) is mounted on the electronic scale (221) and is configured to support the object being weighed.

3. The weighing device according to claim 2, characterized in that, The weighing mechanism (22) also includes: A limiting protrusion (223) is disposed on the surface of the second lifting frame (222) and is configured to limit the bottom of the object being weighed.

4. The weighing device according to claim 2, characterized in that, The weighing mechanism (22) further includes: Multiple first support protrusions (224) are provided at each corner of the second lifting frame (222) and are configured to support the bottom of the object being weighed.

5. The weighing device according to claim 4, characterized in that, The weighing mechanism (22) further includes: Multiple first sensors (225) are disposed at various corners of the second lifting frame (222) and are configured to detect the bottom of the object being weighed and / or to detect tilt.

6. The weighing device according to claim 2, characterized in that, The first lifting frame (12) is located above the first base (11) and has a first through hole (121) extending along the first direction (dr1). The second lifting frame (222) is located above the first lifting frame (12). The weighing mechanism (22) is located between the second lifting frame (222) and the second base (21) and is able to move within the first through hole (121) along the first direction (dr1).

7. The weighing device according to claim 6, characterized in that, The first lifting component (10) also includes: Multiple second support protrusions (14) are provided at each corner of the first lifting frame (12) and are configured to support the bottom of the object being weighed.

8. The weighing device according to claim 7, characterized in that, The first lifting assembly (10) further includes: Multiple second sensors (15) are located at various corners of the first lifting frame (12) and are configured to detect the bottom of the object being weighed and / or to detect tilt.

9. The weighing device according to claim 6, characterized in that, The second lifting frame (222) has a second through hole (222a) extending along the first direction (dr1), and the first lifting assembly (10) further includes: A lifting positioning pin (16) is disposed on the first lifting frame (12) and passes through the second through hole (222a), and is configured to position the bottom of the object being weighed.

10. The weighing device according to claim 1, characterized in that, Also includes: A first guide mechanism (30), connected to the first base (11) and the first lifting frame (12) respectively, is configured to guide the first lifting frame (12) to move linearly relative to the first base (11) in a first direction (dr1).

11. The weighing device according to claim 10, characterized in that, The first guiding mechanism (30) includes: Multiple first guide sleeves (31) are fixedly connected to the first base (11); and Multiple first guide posts (32) have a first end fixedly connected to the first lifting frame (12). The plurality of first guide posts (32) correspond one-to-one with the plurality of first guide sleeves (31), and are respectively inserted into the plurality of first guide sleeves (31).

12. The weighing device according to claim 11, characterized in that, The plurality of first guide posts (32) includes at least one set of first guide posts (32), and the first guide mechanism (30) further includes: At least one first link (33) corresponds one-to-one with the at least one set of first guide posts (32). In each group of first guide posts (32), the second end of all the first guide posts (32) is fixedly connected to the corresponding first connecting rod (33).

13. The weighing device according to claim 12, characterized in that, The first guiding mechanism (30) includes two sets of first guide posts (32) and two first connecting rods (33). The first lifting assembly (10) includes two first lifting drive elements (13). The two first lifting drive elements (13) are arranged at intervals along a second direction (dr2). The weighing mechanism (22) is located between the two first lifting drive elements (13) along the second direction (dr2) and between the two sets of first guide posts (32) along the second direction (dr2). Each set of first guide posts (32) includes two first guide posts. (32) The two first guide posts (32) are arranged at intervals along the third direction (dr3), and the first lifting drive element (13) is located between the two first guide posts (32) along the third direction (dr3). Each first link (33) is fixedly connected to the first guide post (32) of the corresponding group and avoids the first lifting drive element (13). The second direction (dr2) and the third direction (dr3) are both perpendicular to the first direction (dr1), and the second direction (dr2) is perpendicular to the third direction (dr3).

14. The weighing device according to claim 1, characterized in that, Also includes: The second guide mechanism (40), connected to the second base (21) and the first lifting frame (12) respectively, is configured to guide the second base (21) to move linearly relative to the first lifting frame (12) in a first direction (dr1).

15. The weighing device according to claim 14, characterized in that, The second guiding mechanism (40) includes: Multiple second guide sleeves (41) are fixedly connected to the second base (21); and Multiple second guide columns (42) have a first end that is fixedly connected to the first lifting frame (12). The plurality of second guide posts (42) correspond one-to-one with the plurality of second guide sleeves (41) and are respectively inserted into the plurality of second guide sleeves (41).

16. The weighing device according to claim 15, characterized in that, The plurality of second guide posts (42) includes at least one set of second guide posts (42), and the second guide mechanism (40) further includes: At least one second link (43) corresponds one-to-one with the at least one set of second guide posts (42). In each group of second guide posts (42), the second end of all the second guide posts (42) is fixedly connected to the corresponding second link (43).

17. The weighing device according to claim 16, characterized in that, The second guide mechanism (40) includes two sets of second guide posts (42) and two second connecting rods (43). The second lifting assembly (20) includes two second lifting drive elements (23). The two second lifting drive elements (23) are located between the two sets of second guide posts (42) along the second direction (dr2) and are arranged at intervals along the third direction (dr3). The weighing mechanism (22) is located between the two second lifting drive elements (23) along the third direction (dr3). Each set of second guide posts (42) includes two second guide posts (42). The two second guide posts (42) are arranged at intervals along the third direction (dr3). Each second connecting rod (43) is fixedly connected to the second guide post (42) of the corresponding set. The second direction (dr2) and the third direction (dr3) are both perpendicular to the first direction (dr1). The second direction (dr2) is perpendicular to the third direction (dr3).

18. The weighing device according to any one of claims 6-17, characterized in that, The first direction (dr1) is parallel to the vertical direction.

19. The weighing device according to claim 1, characterized in that, Also includes: A blocking component (50), located on at least one side of the first lifting component (10) along the second direction (dr2), is configured to block the object being weighed. Wherein, the second direction (dr2) is the direction in which the object enters the weighing area of ​​the weighing device.

20. The weighing device according to claim 19, characterized in that, The blocking assembly (50) includes: The third base (51) and the fourth base (52) are located on the front and rear sides of the first base (11) respectively along the second direction (dr2); An active blocking mechanism (53), having a first blocking member (531) and disposed on the third base (51), is configured to drive the first blocking member (531) to actively switch between a blocking position and a non-blocking position; and A passive blocking mechanism (54) having a second blocking member (541) and disposed on the fourth base (52) is configured to move the second blocking member (541) away from the blocking position in response to the object's abutment in the second direction (dr2), and to block the object in the opposite direction of the second direction (dr2) by the second blocking member (541) after the object has passed the second blocking member (541).

21. The weighing device according to claim 20, characterized in that, The active blocking mechanism (53) also includes: A first mounting base (532) is fixedly mounted on the third base (51), and the first blocking member (531) is hinged to the first mounting base (532); and A blocking drive element (533), which is driven connected to the first blocking element (531), is configured to drive the first blocking element (531) to rotate relative to the first mounting base (532) so as to switch between a blocking position and a non-blocking position.

22. The weighing device according to claim 20, characterized in that, The passive blocking mechanism (54) further includes: The second mounting base (542) is fixedly mounted on the fourth base (52), and the second blocking member (541) is hinged to the second mounting base (542); and An elastic element (543), connected to the second blocking member (541), is configured to compress when the second blocking member (541) is subjected to abutment in the second direction (dr2) so that the second blocking member (541) moves away from the blocking position, and to reset when it is not subjected to abutment in the second direction (dr2) so that the second blocking member (541) blocks the object in the opposite direction of the second direction (dr2).

23. The weighing device according to claim 1, characterized in that, The object includes a tray (tr) and a battery module (bm), the battery module (bm) being placed inside the tray (tr); the weighing device further includes: A gripping mechanism (60), located adjacent to the first lifting assembly (10), is configured to grip the battery module (bm) in the tray (tr) so that the weighing mechanism (22) weighs the tray (tr) containing the battery module (bm) or the tray (tr) after the battery module (bm) has been removed.

24. The weighing device according to claim 1, characterized in that, Also includes: An information recognition element (70), disposed in the first lifting assembly (10) or the second lifting assembly (20), is configured to recognize information about the object.

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