Weighing device and battery production equipment

Abstract

The utility model discloses a weighing device and battery production equipment. The weighing device comprises a weighing assembly which is provided with a bearing part, and the bearing part is suitable for bearing a workpiece so as to weigh the weight of the workpiece; the guide part is provided with a guide part, the guide part is located above the bearing part, the guide part and the bearing part are arranged at an interval, and the workpiece can slide to the bearing part through the guide part; and the pressure sensor is connected to the guide piece, and the pressure sensor is suitable for supporting the guide piece. A guiding piece is arranged above the bearing part and provided with a guiding part, the mechanical clamping jaw can place a workpiece on the guiding part, the workpiece can slide to the bearing part through the guiding part, and therefore the situation that the mechanical clamping jaw directly places the workpiece on the weighing assembly can be avoided, the weighing assembly is damaged, and the pressure sensor can detect the pressure borne by the guiding piece. Therefore, whether the workpiece is accurately placed in the guide part is judged.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a weighing device and battery production equipment. Background Technology

[0002] In related technologies, cylindrical lithium battery cells undergo a series of assembly processes before entering an electrolyte filling machine for electrolyte filling. Because of the precision requirements for the electrolyte volume, the cells need to be weighed before and after filling to calculate the net weight difference, thereby ensuring that the amount of electrolyte added meets design requirements.

[0003] To ensure weighing accuracy, a high-precision electronic scale is generally used. A tray containing the battery cells is mounted on the electronic scale. Mechanical grippers remove the battery cells from the logistics line and place them on the scale, for example, into the tray. However, due to issues such as misalignment between the battery cell and the tray, insertion may be difficult and could damage the scale.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a weighing device.

[0006] According to a first aspect of the present invention, a weighing device is provided. The weighing device includes:

[0007] A weighing assembly is provided with a support portion, which is adapted to support a workpiece for weighing the workpiece.

[0008] A guide member is provided with a guide portion, which is located above the support portion and spaced apart from the support portion, allowing the workpiece to slide to the support portion via the guide portion;

[0009] A pressure sensor is connected to the guide member and is adapted to support the guide member.

[0010] Optionally, the guide portion includes a first guide hole, into which the workpiece can be inserted and slid along the first guide hole to the support portion.

[0011] Optionally, the guide portion is detachably mounted with a specification component, the specification component having a second guide hole, the inner diameter of the second guide hole corresponding to the outer diameter of the workpiece, the workpiece being able to be inserted into the second guide hole and slide along the second guide hole to the support portion.

[0012] Optionally, the weighing assembly includes a weighing element, the weighing element having the bearing portion, and multiple weighing elements are provided, the multiple weighing elements being spaced apart, the guide extending along the arrangement direction of the weighing elements, the guide having multiple guide portions spaced apart, and each guide portion corresponding to one weighing element.

[0013] Optionally, the plurality of weighing elements are arranged in two rows, with the bearing portions of the two rows extending in opposite directions, and the plurality of bearing portions of the two rows are arranged alternately in sequence.

[0014] Optionally, at least two pressure sensors are provided, and the at least two pressure sensors are respectively located at opposite ends of the guide member.

[0015] Optionally, it also includes a support base, with the pressure sensor mounted between the support base and the guide member, the guide member being movable relative to the support base.

[0016] Optionally, it also includes a guide post, the guide being slidably connected to the support base via the guide post.

[0017] Optionally, the support base is provided with a sliding sleeve, one end of the guide post is connected to the guide member, and the other end is slidably connected to the sliding sleeve.

[0018] Optionally, multiple guide posts are provided, and the multiple guide posts are respectively disposed on opposite sides of the pressure sensor.

[0019] Optionally, it also includes a photoelectric sensor, which includes a receiver and a transmitter, located on opposite sides of the guide member. When the workpiece is located in the guide member, the workpiece can block the light beam emitted by the transmitter.

[0020] Optionally, it also includes a cup holder, which is detachably mounted on the support portion, and the workpiece can slide into the cup holder through the guide portion.

[0021] According to a second aspect of the present invention, a battery production apparatus is provided. This battery production apparatus includes the weighing device described in the above embodiments.

[0022] One technical advantage of this application is that a guide member is provided above the bearing part. The guide member has a guide portion, and the mechanical gripper can place the workpiece in the guide portion. The workpiece can slide to the bearing part through the guide portion, thereby avoiding the mechanical gripper directly placing the workpiece on the weighing component to avoid damaging the weighing component. The pressure sensor can detect the pressure on the guide member to determine whether the workpiece is accurately placed in the guide portion.

[0023] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0025] Figure 1 This is a structural schematic diagram of a weighing device according to an embodiment of the present invention.

[0026] Figure 2 This is a partial enlarged view of a weighing device according to an embodiment of the present invention.

[0027] Figure 3 This is a partially enlarged top view of a weighing device according to an embodiment of the present invention.

[0028] Figure 4 This is a side sectional view of a weighing device according to an embodiment of the present invention.

[0029] Figure label:

[0030] 1. Weighing component; 2. Guide component; 21. Specification component; 211. Second guide hole; 3. Pressure sensor; 4. Support base; 5. Guide post; 6. Sliding sleeve; 71. Receiver; 72. Transmitter; 8. Cup holder; 9. Mounting bracket; 10. Base; 11. Mounting base; 12. Bearing unit. Detailed Implementation

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0036] According to one embodiment of this application, a weighing device is provided. Figures 1 to 4 As shown, the weighing device includes a weighing assembly, a guide member 2, and a pressure sensor 3. The weighing assembly has a support portion 12, which is adapted to carry a workpiece for weighing. The guide member 2 has a guide portion located above and spaced apart from the support portion 12, allowing the workpiece to slide onto the support portion 12 via the guide portion. The pressure sensor 3 is connected to the guide member 2 and is adapted to support the guide member 2.

[0037] In this example, a guide member 2 is provided above the support portion 12. The guide member 2 has a guide portion, and the mechanical gripper can place the workpiece in the guide portion. The workpiece can slide to the support portion 12 through the guide portion, thereby preventing the mechanical gripper from directly placing the workpiece on the weighing assembly and thus avoiding damage to the weighing assembly. The pressure sensor 3 can detect the pressure on the guide member 2, thereby determining whether the workpiece is accurately placed in the guide portion.

[0038] like Figure 4 As shown, it should be noted that the pressure sensor 3 can detect the pressure on the guide member 2, thereby determining whether the workpiece is accurately placed in the guide section. For example, if the workpiece is misaligned or tilted when inserted into the second guide hole 211, causing it to scrape or rub against the inner wall of the second guide hole 211 during its downward movement, this will generate downward pressure on the guide member 2. The guide member 2 acts on the pressure sensor 3, which can detect this pressure. If the pressure value exceeds a preset value, the machine will stop and alarm. By setting the pressure sensor 3, it is possible to accurately determine whether the workpiece is accurately placed in the guide section, so as to adjust the position of the mechanical gripper to place the workpiece until the workpiece is accurately placed in the guide section, reducing damage to the workpiece.

[0039] In this example, if the workpiece scrapes against the guide during the process of placing the workpiece into the guide, the external force of the scraping will activate the pressure sensor 3. The pressure sensor 3 will then activate its real-time pressure monitoring function. If the pressure exceeds the set pressure range, it will alarm and stop the machine, and automatically record the current batch of workpieces.

[0040] It should also be noted that the workpiece can be a battery cell. The battery cell needs to be weighed before and after electrolyte injection to ensure the accuracy of the injection volume. Alternatively, the workpiece can be other types of components; those skilled in the art can determine this based on the specific circumstances, and no specific limitations are made here.

[0041] like Figure 1 As shown, in this example, the weighing device also includes a base 10, on which the weighing components can be mounted. The guide member 2 can also be disposed on the base 10. The base 10 can be a plate or similar structure, which can be determined by those skilled in the art according to the actual situation, and is not specifically limited here.

[0042] In one example, the guide portion includes a first guide hole into which the workpiece can be inserted and slid along the first guide hole to the support portion 12.

[0043] In this example, the guide portion on the guide member 2 can be a first guide hole, which can be vertically inserted into the guide member 2. The support portion 12 is located below the first guide hole. The mechanical gripper can insert the workpiece into the first guide hole, and then the workpiece slides through the first guide hole to the support portion 12.

[0044] Of course, the guide section can also be other structures, such as guide grooves, etc. Those skilled in the art can decide according to the actual situation, and no specific limitation is made here.

[0045] In one example, such as Figure 1 and Figure 2 As shown, the guide portion is detachably mounted with a specification part 21. The specification part 21 is provided with a second guide hole 211. The inner diameter of the second guide hole 211 corresponds to the outer diameter of the workpiece. The workpiece can be inserted into the second guide hole 211 and slide along the second guide hole 211 to the support portion 12.

[0046] like Figure 1 and Figure 2 As shown, the weighing device also includes a specification component 21, which is detachably installed on the guide portion. The specification component 21 is provided with a second guide hole 211, into which the workpiece can be inserted so that the workpiece can slide along the second guide hole 211 to the bearing portion 12. That is, the specification component 21 is installed on the guide portion, and the specification component 21 itself serves as the guide portion, playing a guiding role.

[0047] It should be noted that the specification part 21 is installed on the guide part, and the second guide hole 211 serves as the first guide hole of the guide part 2, used to guide the workpiece to slide towards the support part 12. That is, the specification part 21 can be inserted through the guide part 2, and the support part 12 is provided below the second guide hole 211.

[0048] In this example, the inner diameter of the second guide hole 211 of the specification part 21 corresponds to the outer diameter of the workpiece. For example, if the workpiece is a cylindrical battery cell, the second guide hole 211 is a cylindrical hole corresponding to the diameter of the cylindrical battery cell. The inner diameter of the second guide hole 211 can be slightly larger than the outer diameter of the workpiece. The workpiece can slide along the second guide hole 211 to the support portion 12. The specification part 21 is detachably mounted on the guide portion, thereby allowing for easy replacement of different specifications of the specification part 21 according to the size of the workpiece. The inner diameter of the second guide hole 211 differs for different specification parts 21.

[0049] It should be noted that the specification component 21 can be fixedly connected to the guide component 2 by a detachable connection method such as snap-fit ​​or fastener screw connection. Those skilled in the art can determine the specific method according to the actual situation, and no specific limitation is made here.

[0050] In one example, such as Figure 1 and Figure 2 As shown, the weighing assembly includes a weighing element 1, the weighing element 1 is provided with the bearing part 12, and there are multiple weighing elements 1, which are spaced apart. The guide 2 extends along the arrangement direction of the weighing elements 1, and the guide 2 is provided with multiple guide parts at intervals, each guide part corresponding to one weighing element 1.

[0051] In this example, multiple weighing elements 1 are spaced apart, and each weighing element 1 is equipped with a bearing portion 12. The guide element 2 can be a rod structure, and the length direction of the guide element 2 is the same as the arrangement direction of the weighing elements 1. The guide element 2 is spaced apart with multiple guide portions, and each guide portion corresponds to a weighing portion below it. This allows multiple workpieces to be weighed simultaneously, thereby improving weighing efficiency. For example, when the guide element 2 is equipped with a standard part 21, that is, the number of standard parts 21 is the same as the number of weighing elements 1.

[0052] The weighing component 1 can be installed on the base 10 by welding, bonding, snap-fitting, or screwing. The weighing component 1 can be an electronic scale with high accuracy. Of course, the weighing component 1 can also be other types of weighing mechanisms. Those skilled in the art can determine the appropriate method based on the actual situation; no specific limitations are made here.

[0053] In one example, such as Figure 3 As shown, the multiple weighing components 1 are arranged in two rows, and the bearing portions 12 of the two rows extend in opposite directions, and the multiple bearing portions 12 of the two rows are arranged alternately in sequence.

[0054] like Figure 3As shown, in this example, one row of the two rows of weighing components 1 is the first row, and the other row is the second row. The weighing components 1 in the first row are spaced apart, with a first gap between two adjacent weighing components 1. The weighing components 1 in the second row are also spaced apart, with a second gap between two adjacent weighing components 1. A third gap exists between the two rows of weighing components 1. The support portions 12 of the two rows extend in opposite directions; that is, the support portions 12 of the weighing components 1 in the first row correspond to and extend into the second gap, and are located within the third gap. The support portions 12 of the weighing components 1 in the second row correspond to and extend into the first gap, and are located within the third gap. This allows the multiple support portions 12 in the two rows to be alternately arranged sequentially within the third gap, and the width of the support portions 12 is relatively small to reduce space occupation. The guide member 2 is located above the multiple support portions 12.

[0055] For example, the number of weighing components 1 in each row can be set at intervals of ten, twelve, fifteen or twenty, etc., as can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0056] In one example, such as Figure 1 and Figure 2 As shown, the weighing device also includes a cup 8, which is detachably installed on the bearing part 12, and the workpiece can slide into the cup 8 through the guide part.

[0057] In this example, a mounting base 11 is installed on the weighing device, and at least a portion of the mounting base 11 forms a support portion 12. For example, the portion of the mounting base 11 extending outward to the third gap constitutes the support portion 12. The mounting base 11 can be a plate or similar structure. A cup 8 is detachably mounted to the support portion 12. The opening of the cup 8 is located below the guide portion, allowing the workpiece to slide into the cup 8 through the guide portion. Weighing the workpiece in the cup 8 helps to limit its movement, preventing it from shaking or tilting, and improving weighing accuracy. Furthermore, the cup 8 also provides protection for the workpiece.

[0058] It should be noted that the mounting base 11 can be connected to the weighing component 1 by welding, screwing, or snap-fitting. Those skilled in the art can determine the appropriate method based on the actual situation, and no specific limitation is made here.

[0059] In this example, the cup holder 8 is detachably mounted on the support portion 12, facilitating the replacement of cup holders 8 of different specifications to accommodate workpieces of different sizes. For example, the cup holder 8 can be connected to the mounting base 11 by snap-fit ​​or screw fasteners, or a groove can be provided on the mounting base 11, in which the cup holder 8 can be partially placed. Of course, the specific installation method of the cup holder 8 can be determined by those skilled in the art according to the actual situation, and no specific limitation is made here.

[0060] In this example, the position of cup 8 can be adjusted. When debugging the balancing device, the position of cup 8 can be adjusted based on the specification part 21.

[0061] In one example, at least two pressure sensors 3 are provided, and the at least two pressure sensors 3 are located at opposite ends of the guide member 2.

[0062] In this example, two pressure sensors 3 can be provided, located at opposite ends of the guide member 2. For example, multiple guide members are spaced apart, with the two pressure sensors 3 located on opposite sides of the guide member's arrangement direction. This not only provides stable support for the guide member 2 but also improves the accuracy of the pressure sensors 3 in detecting the pressure value of the guide member 2.

[0063] Alternatively, three or more pressure sensors 3 can be provided, with multiple pressure sensors 3 spaced apart along the length of the guide member 2, which helps to further improve the stability of the support guide member 2 and improve the accuracy of the pressure sensor 3 in detecting the pressure value of the guide member 2.

[0064] Of course, the specific number and arrangement of pressure sensors 3 can be determined by those skilled in the art based on the actual situation, and no specific limitation is made here.

[0065] In one example, such as Figure 4 As shown, the weighing device also includes a support base 4, and the pressure sensor 3 is installed between the support base 4 and the guide member 2. The guide member 2 is movable relative to the support base 4.

[0066] like Figure 4 As shown, in this example, the guide member 2 is slidably connected to the support base 4, the pressure sensor 3 is mounted on the support base 4, and the detection end of the pressure sensor 3 is connected to the guide member 2. The guide member 2 can slide up and down relative to the support base 4. By slidably connecting the guide member 2 to the support base 4, the stability of the guide member 2 can be improved.

[0067] It should be noted that the pressure sensor 3 can be fixedly installed on the support base 4 by means of bonding, welding, snap-fitting, screwing, etc. Those skilled in the art can determine the appropriate method according to the actual situation, and no specific limitation is made here.

[0068] In this example, the support base 4 can be installed on the base 10 to facilitate a more compact structure of the weighing device. For example, the support base 4 can be fixedly installed on the base 10 by means of bonding, welding, snap-fitting, screwing, etc. Those skilled in the art can determine the appropriate method based on the actual situation, and no specific limitation is made here.

[0069] In one example, such as Figure 4As shown, the weighing device also includes a guide post 5, and the guide member 2 is slidably connected to the support base 4 through the guide post 5.

[0070] like Figure 4 As shown, in this example, one end of the guide post 5 is fixedly connected to the guide member 2, and the other end is slidably connected to the support base 4. Alternatively, one end of the guide post 5 is slidably connected to the guide member 2, and the other end is fixedly connected to the support base 4. The pressure sensor 3 is mounted on the support base 4, and the detection end of the pressure sensor 3 is connected to the guide member 2. The guide member 2 can slide towards the support base 4 via the guide post 5 to improve the stability of the guide member 2.

[0071] In one example, such as Figure 4 As shown, there are multiple guide posts 5, which are respectively arranged on opposite sides of the pressure sensor 3.

[0072] like Figure 4 As shown, in this example, two guide posts 5 can be provided, and the two guide posts 5 can be respectively set on both sides of the pressure sensor 3, which helps to improve the sliding stability of the guide member 2 and effectively avoids the guide member 2 from tilting or shaking. The two guide posts 5 can be arranged symmetrically about the pressure sensor 3, and the pressure sensor 3 can be located in the middle of the guide member 2.

[0073] Alternatively, multiple guide posts 5 can be provided on both sides of the pressure sensor 3. Those skilled in the art can decide according to the actual situation, and no specific limitation is made here.

[0074] In one example, such as Figure 4 As shown, the support base 4 is provided with a sliding sleeve 6, one end of the guide post 5 is connected to the guide member 2, and the other end is slidably connected to the sliding sleeve 6.

[0075] like Figure 4 As shown, in this example, the weighing device also includes a sliding sleeve 6, which can be disposed on the support base 4. The guide post 5 slides through the sliding sleeve 6, thereby improving the smoothness of the sliding of the guide member 2 and improving the accuracy of the pressure sensor 3 detection.

[0076] Alternatively, the sliding sleeve 6 can also be provided on the guide member 2, with one end of the guide post 5 slidably connected to the sliding sleeve 6 in the guide member 2, and the other end fixedly connected to the support base 4. Those skilled in the art can decide according to the actual situation, and no specific limitation is made here.

[0077] It should be noted that two sets of pressure sensors 3 and support bases 4 can be provided, with the two sets of pressure sensors 3 and support bases 4 located at both ends of the guide member 2 along its length. That is, pressure sensors 3 are connected to both ends of the guide member 2 along its length, and the pressure sensors 3 are installed on the support bases 4, so that the guide member 2 can move downward as a whole when compressed, avoiding the guide member 2 from tilting. Furthermore, the provision of pressure sensors 3 at both ends can also improve the accuracy of pressure detection on the guide member 2.

[0078] In one example, the weighing device also includes a photoelectric sensor, which includes a receiver 71 and a transmitter 72, located on opposite sides of the guide member 2. When the workpiece is located in the guide member, the workpiece can block the light beam emitted by the transmitter 72.

[0079] like Figure 1 As shown, in this example, receiver 71 and transmitter 72 are located on opposite sides of the guide section. Transmitter 72 can emit light towards receiver 71, with the light beam positioned above the guide section. During weighing, the workpiece slides through the guide section towards the support section 12, which supports the bottom of the workpiece, while the top protrudes from the guide section. After weighing, the mechanical gripper removes the workpiece. If the workpiece is not removed, it blocks the light emitted by transmitter 72, thus detecting that a workpiece has not been removed from the weighing device. If not all workpieces are removed, the device will stop and trigger an alarm. Furthermore, when the mechanical gripper places the workpiece in the guide section, a photoelectric sensor can detect whether a workpiece has not been removed or if there are other foreign objects within the guide section. If a workpiece has not been removed or if other foreign objects are detected, the device will stop and trigger an alarm, requiring manual removal.

[0080] In this example, the weighing device also includes two mounting brackets 9, which are used to mount the transmitter 72 and the receiver 71, respectively. The two mounting brackets 9 can be located on both sides of the guide 2 along its length. The mounting brackets 9 can be connected to the support 4, or they can be connected to the base 10.

[0081] According to a second aspect of the present invention, a battery production apparatus is provided. This battery production apparatus includes the weighing device described in the above embodiment. The weighing device includes a weighing component and a guide member 2. The weighing component has a supporting portion 12, which is adapted to support battery cells for weighing. The guide member 2 has a guiding portion located above and spaced apart from the supporting portion 12, allowing the battery cell to slide onto the supporting portion 12 via the guiding portion. The guide member 2, with its guiding portion, is positioned above the supporting portion 12, allowing mechanical grippers to place the battery cell onto the guiding portion. The battery cell can then slide onto the supporting portion 12 via the guiding portion, thereby preventing the mechanical grippers from directly placing the battery cell onto the weighing component and thus avoiding damage to the weighing component.

[0082] In the battery production process, the cells can be weighed before and after electrolyte injection to ensure the accuracy of the electrolyte injection amount.

[0083] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0084] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A weighing device, characterized in that include: A weighing assembly is provided with a support portion, which is adapted to support a workpiece for weighing the workpiece. A guide member is provided with a guide portion, which is located above the support portion and spaced apart from the support portion, allowing the workpiece to slide to the support portion via the guide portion; A pressure sensor is connected to the guide member and is adapted to support the guide member.

2. Weighing apparatus according to claim 1, characterized in that The guide portion includes a first guide hole, into which the workpiece can be inserted and slid along the first guide hole to the support portion.

3. Weighing apparatus according to claim 1, characterized in that The guide portion is detachably mounted with a specification component, which has a second guide hole. The inner diameter of the second guide hole corresponds to the outer diameter of the workpiece. The workpiece can be inserted into the second guide hole and slide along the second guide hole to the support portion.

4. Weighing apparatus according to claim 1, characterized in that The weighing assembly includes a weighing element, the weighing element having the bearing portion, and multiple weighing elements are provided, with the multiple weighing elements spaced apart. The guide extends along the arrangement direction of the weighing elements, and the guide is provided with multiple guide portions at intervals, each guide portion corresponding to one weighing element.

5. Weighing apparatus according to claim 4, characterized in that The weighing components are arranged in two rows, with the bearing portions of the two rows extending in opposite directions, and the bearing portions of the two rows are arranged alternately in sequence.

6. The weighing apparatus of claim 1, wherein, At least two pressure sensors are provided, and the at least two pressure sensors are respectively located at opposite ends of the guide member.

7. The weighing apparatus of claim 1, wherein, It also includes a support base, the pressure sensor being mounted between the support base and the guide member, the guide member being movable relative to the support base.

8. Weighing apparatus according to claim 7, characterized in that It also includes guide posts, and the guide member is slidably connected to the support base via the guide posts.

9. Weighing apparatus according to claim 8, characterized in that The support base is provided with a sliding sleeve, one end of the guide post is connected to the guide member, and the other end is slidably connected to the sliding sleeve.

10. Weighing apparatus according to claim 8, characterized in that The guide post is provided in multiple parts, and the multiple guide posts are respectively arranged on opposite sides of the pressure sensor.

11. The weighing apparatus of claim 1, wherein, It also includes a photoelectric sensor, which includes a receiver and a transmitter, located on opposite sides of the guide member. When the workpiece is located in the guide member, the workpiece can block the light beam emitted by the transmitter.

12. The weighing apparatus of claim 1, wherein, It also includes a cup holder, which is detachably mounted on the support portion, and the workpiece can slide into the cup holder through the guide portion.

13. A battery production apparatus, characterized by comprising: Includes the weighing device as described in any one of claims 1 to 12.

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