Battery positioning device

Abstract

The utility model relates to the technical field of battery production, and discloses a battery positioning device which is used for fixing a battery, the battery is provided with a bottom surface and a positioning hole, and the positioning hole is recessed in the bottom surface; the positioning device comprises a positioning jig, the positioning jig comprises a base and a positioning column, the base is provided with a top face, the top face is used for being attached to the bottom face of the battery, and the positioning column is connected to the base and used for being embedded into the positioning hole of the battery. The base is provided with a plurality of adsorption holes which are distributed around the positioning column at intervals; according to the battery positioning device provided by the utility model, the positioning column embedded with the positioning hole of the battery is arranged on the base, so that the risk that the battery falls off from a positioning jig can be reduced; according to the battery cleaning and spraying device, the plurality of adsorption holes distributed around the positioning column are formed in the base, and the battery can be firmly fixed on the base, so that the battery can be prevented from shaking or displacing in the cleaning and spraying processes, and the possibility that the battery falls off is reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery positioning device. Background Technology

[0002] In the battery manufacturing industry, battery cleaning and coating are key processes. Currently, the common practice for cleaning and coating batteries is to fix them on positioning fixtures to achieve automated operation.

[0003] Existing positioning fixtures rely solely on vacuum adsorption to secure batteries. Batteries secured in this way are prone to shaking and displacement during cleaning and spraying processes, increasing the likelihood of them falling out. During cleaning, the mechanical forces, water flow impact, and vibrations from the cleaning equipment can easily cause battery displacement, disrupting their secure position on the fixture and increasing the risk of them falling. Similarly, in the spraying process, since the spray gun typically follows a fixed path and parameters to coat the batteries fixed to the fixture, the operation of the spraying equipment, including the rotation and translation of the spray gun and the spray pressure, can also cause the batteries to shake and shift, further exacerbating the possibility of them falling out. Utility Model Content

[0004] With the aim of at least solving one of the technical problems existing in the prior art, this utility model aims to provide a battery positioning device that can prevent the battery from shaking or shifting during cleaning and spraying, thereby reducing the possibility of the battery falling off.

[0005] To achieve the above objectives, this utility model provides a battery positioning device for fixing a battery. The battery has a bottom surface and a positioning hole, the positioning hole being recessed into the bottom surface. The positioning device includes a positioning fixture, which includes a base and a positioning post. The base has a top surface for fitting against the bottom surface of the battery. The positioning post is connected to the base and is used to be embedded in the positioning hole of the battery. The base is provided with a plurality of adsorption holes spaced around the positioning post, the adsorption holes being used to adsorb and fix the battery.

[0006] Compared with the prior art, the positioning device of this utility model has the following advantages: (1) By setting a positioning post in the positioning hole for embedding the battery in the base, compared with the existing positioning fixture that only relies on vacuum adsorption for positioning, the battery can be more accurately positioned mechanically. This allows the battery to more effectively resist external forces that cause the battery to shake or shift during the cleaning process, such as mechanical force, water flow impact force, and vibration of the cleaning equipment. It also more effectively resists external forces that cause the battery to shake or shift during the spraying process, such as the rotation and translation of the spray gun and the pressure of the paint spray. By reducing battery movement or displacement, the risk of batteries falling off the positioning fixture is lowered, ensuring the batteries remain firmly fixed during critical processes such as cleaning and spraying, and guaranteeing the smooth and safe operation of automated processes. Furthermore, by embedding the positioning pins into the positioning holes, the batteries maintain an accurate position on the positioning fixture. This prevents easy positional changes during the spraying process, as the spray gun follows a fixed path and parameters, ensuring spraying precision and allowing the paint to cover the battery surface more evenly and accurately, improving the overall battery production quality.

[0007] (2) By setting multiple adsorption holes distributed around the positioning column on the base, the multiple adsorption holes can generate adsorption force to firmly fix the battery on the base, thereby further preventing the battery from shaking or shifting during cleaning and spraying, further improving the fixing stability of the battery on the positioning fixture, and further reducing the possibility of the battery falling off. Attached Figure Description

[0008] Figure 1 This is a top view of a positioning device provided in Embodiment 1 of this utility model;

[0009] Figure 2 This is a top view of the centering and positioning mechanism provided in Embodiment 1 of this utility model when it is in the centering state;

[0010] Figure 3 This is a schematic diagram of the positioning fixture and rotary drive mechanism provided in Embodiment 1 of this utility model;

[0011] Figure 4 This is a front view of the positioning fixture and rotary drive mechanism provided in Embodiment 1 of this utility model;

[0012] Figure 5 This is a schematic diagram of the positioning fixture provided in Embodiment 1 of this utility model when a battery is placed in it;

[0013] Figure 6 This is a schematic diagram of the battery structure provided in Embodiment 1 of this utility model;

[0014] Figure 7 This is a cross-sectional view of the positioning fixture provided in Embodiment 1 of this utility model;

[0015] Figure 8 yes Figure 7 Enlarged view of point A;

[0016] Figure 9 This is a top view of the positioning fixture provided in Embodiment 2 of this utility model;

[0017] Figure 10 This is a cross-sectional view of the positioning fixture provided in Embodiment 2 of this utility model.

[0018] In the diagram, 1. Positioning fixture; 11. Base; 12. Positioning post; 13. Negative pressure generator; 14. Telescopic drive; 15. First sealing ring; 16. Second sealing ring; 110. Top surface; 111. Adsorption hole; 112. Mounting groove; 113. Receiving groove; 114. Adsorption cavity; 131. Connecting pipe; 132. Adapter; 133. Negative pressure cavity; 161. Through hole; 1121. Bottom wall; 1122. Side wall;

[0019] 2. Rotary drive mechanism; 21. Drive motor; 22. Drive wheel; 23. Transmission belt; 24. Driven wheel;

[0020] 3. Centering and positioning mechanism; 31. First positioning plate; 32. First driving device; 33. Second positioning plate; 34. Second driving device; 330. Limiting groove; 311. First positioning groove; 331. Second positioning groove;

[0021] 4. Battery; 40. Bottom surface; 401. First surface; 402. Second surface; 41. Positioning hole. Detailed Implementation

[0022] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0028] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] like Figures 1-8As shown, the present invention provides a battery positioning device for fixing a battery 4. The battery 4 has a bottom surface 40 and a positioning hole 41, the positioning hole 41 being recessed in the bottom surface 40. The positioning device includes a positioning fixture 1, which includes a base 11 and a positioning post 12. The base 11 has a top surface 110, which is used to fit against the bottom surface 40 of the battery 4. The positioning post 12 is connected to the base 11 and is used to be embedded in the positioning hole 41 of the battery 4. The base is provided with a plurality of adsorption holes spaced around the positioning post, which are used to adsorb and fix the battery.

[0031] Based on this technical solution, by setting a positioning post 12 in the positioning hole 41 of the base 11 for embedding the battery 4, compared with the existing positioning fixture 1 which only relies on vacuum adsorption for positioning, the battery 4 can be more precisely limited from a mechanical structure perspective. This allows the battery 4 to more effectively resist external forces that cause it to shake or shift during the cleaning process, such as mechanical forces, water flow impact, and vibration of the cleaning equipment. It also allows it to more effectively resist external forces that cause it to shake or shift during the spraying process, such as the rotation and translation of the spray gun and the pressure of the paint spray, thus reducing the likelihood of the battery 4 shaking or shifting. This reduces the risk of battery 4 falling off the positioning fixture 1, ensuring the battery 4 remains firmly fixed during key processes such as cleaning and spraying, and ensuring the smooth and safe operation of the automated process. By embedding the positioning post 12 into the positioning hole 41, the battery 4 can also maintain an accurate position on the positioning fixture 1. In this way, when the spray gun sprays the battery 4 according to a fixed path and parameters during the spraying process, the battery 4 will not easily change position, which helps to ensure the accuracy of the spraying, so that the paint can cover the surface of the battery 4 more evenly and accurately, improve the spraying quality of the battery 4, and thus ensure the overall production quality of the battery 4.

[0032] By providing multiple adsorption holes 111 distributed around the positioning post 12 on the base 11, the multiple adsorption holes 111 can generate adsorption force to firmly fix the battery 4 on the base 11, thereby further preventing the battery 4 from shaking or shifting during cleaning and spraying, further improving the fixing stability of the battery 4 on the positioning fixture 1, and further reducing the possibility of the battery 4 falling off.

[0033] In this embodiment, the bottom surface 40 of the battery 4 includes a first surface 401 and a second surface 402 that are connected to each other. The second surface 402 protrudes downward relative to the first surface 401, that is, the second surface 402 is lower than the first surface 401, and the positioning hole 41 is recessed in the second surface 402.

[0034] In some other embodiments, the bottom surface 40 of the battery 4 may only include the first surface 401, and the positioning hole 41 is recessed in the first surface 401; or the bottom surface 40 of the battery 4 may include a third surface, a fourth surface, a fifth surface, etc., and the battery 4 is recessed in the third surface, the fourth surface, or the fifth surface, etc., which is not limited here.

[0035] In this embodiment, the second surface 402 is located at the center of the first surface 401.

[0036] See Figures 1-5 The positioning fixture 1 also includes a negative pressure generating element 13, which includes a connecting pipe 131. The connecting pipe 131 is connected to the base 11 and communicates with the adsorption hole 111. Under the action of the negative pressure generating element 13, the adsorption hole 111 generates a negative pressure adsorption force to firmly fix the battery 4 on the base 11, thereby further preventing the battery 4 from shaking or shifting during cleaning and spraying.

[0037] See Figures 1-5 The positioning device provided in Embodiment 1 further includes a rotary drive mechanism 2; the central axis of the connecting pipe 131 coincides with the central axis of the base 11; the rotary drive mechanism 2 is connected to the connecting pipe 131 and can drive the connecting pipe 131 to rotate around the central axis of the connecting pipe 131, so as to drive the base 11 to rotate around the central axis of the base 11.

[0038] The rotary drive mechanism 2 drives the base 11 to rotate around its central axis, enabling the base 11 to drive the battery 4 to rotate. When the positioning device is applied to the spraying process, the rotation of the battery 4 diversifies the direction of paint application on the battery 4. Compared to a fixed spraying method, the paint can adhere to the battery 4 at angles that better conform to the structural characteristics of each part of the battery 4, enhancing the bonding strength between the paint and the battery 4 and reducing problems such as peeling or flaking caused by paint accumulation or poor adhesion. When the positioning device is applied to the cleaning process, the rotation of the battery 4 allows each part of the battery 4 surface to be exposed to the cleaning fluid in sequence, avoiding cleaning dead spots caused by fixed positions and improving the comprehensiveness of cleaning. Moreover, as the battery 4 rotates, the flow direction of the cleaning fluid on the surface of the battery 4 changes continuously, which helps to break the water flow pattern formed by fixed positions, allowing the cleaning fluid to penetrate more effectively into the fine gaps and pores on the surface of the battery 4, improving the cleaning effect.

[0039] The negative pressure generating component 13 also includes an adapter 132 and a negative pressure generating device (not shown). The adapter 132 is rotatably connected to the lower end of the connecting pipe 131 so that the adapter 132 will not rotate when the connecting pipe 131 rotates. The adapter 132 is connected to the negative pressure generating device through a pipe.

[0040] Negative pressure generating equipment can include, but is not limited to, vacuum pumps, vacuum generators, etc.

[0041] In this embodiment, the rotary drive mechanism 2 includes a drive motor 21, a drive wheel 22, a transmission belt 23, and a driven wheel 24. The drive wheel 22 is fixedly connected to the output end of the drive motor 21, and the driven wheel 24 is sleeved and fixed on the connecting pipe 131. The drive wheel 22 and the driven wheel 24 are connected by transmission belt 23. Thus, the drive motor 21 drives the drive wheel 22 to rotate, the drive wheel 22 drives the driven wheel 24 to rotate through the transmission belt 23, and the driven wheel 24 drives the connecting pipe 131 to rotate around its central axis.

[0042] In some other embodiments, the rotation of the connecting pipe 131 can also be achieved by other types of rotary drive mechanisms 2, which are not limited here.

[0043] See Figures 1-5 The positioning device provided in Embodiment 1 of this utility model further includes a centering positioning mechanism 3. The centering positioning mechanism 3 includes a first positioning plate 31, a first driving device 32, a second positioning plate 33, and a second driving device 34. The first positioning plate 31 is located on one side of the base 11. The first driving device 32 is connected to the first positioning plate 31 and is used to drive the first positioning plate 31 to move closer to or away from the battery 4 on the base 11. The second positioning plate 33 is located on the side of the base 11 away from the first positioning plate 31. The second driving device 34 is connected to the second positioning plate 33 and is used to drive the second positioning plate 33 to move closer to or away from the battery 4 on the base 11. The positioning hole 41 is located at the center of the bottom surface 40, and the central axis of the positioning post 12 coincides with the central axis of the base 11.

[0044] By placing the first positioning plate 31 and the second positioning plate 33 on both sides of the base 11, the position of the battery 4 on the base 11 can be precisely adjusted by moving the first positioning plate 31 and the second positioning plate 33 closer to or further away from the battery 4, ensuring that the central axis of the battery 4 is aligned with the central axis of the base 11. Therefore, the centering positioning mechanism 3 can effectively eliminate positioning errors caused by inaccurate placement of the battery 4 or positional deviation of the base 11 itself. Whether during battery 4 installation or on the production line, the centering positioning mechanism 3 can adjust the position of the battery 4 in real time to ensure the accuracy of the battery 4's position on the base 11. Since the positioning hole 41 is located at the center of the bottom surface 40, and the central axis of the positioning post 12 coincides with the central axis of the base 11, when the positioning post 12 is embedded in the positioning hole 41 at the center of the bottom surface 40 of the battery 4, the central axis of the base 11 and the central axis of the battery 4 are basically coincident, thereby precisely controlling the concentricity between the battery 4 and the positioning fixture 1.

[0045] The first driving device 32 and the second driving device 34 may be, but are not limited to, electric push rods, pneumatic telescopic cylinders, electromagnetic telescopic devices, linear modules, etc.

[0046] The first positioning plate 31 has a first positioning groove 311 recessed inward at one end near the second positioning plate 33. The shape of the groove wall of the first positioning groove 311 matches the shape of the outer wall of the battery 4. The second positioning plate 33 has a second positioning groove 331 recessed inward at one end near the first positioning plate 31. The shape of the groove wall of the second positioning groove 331 matches the shape of the outer wall of the battery 4, and the second positioning groove 331 and the first positioning groove 311 are arranged opposite to each other. When the centering positioning mechanism 3 is in the centering state, a limiting groove 330 is formed between the first positioning groove 311 and the second positioning groove 331. The central axis of the limiting groove 330 coincides with the central axis of the positioning post 12.

[0047] By matching the wall shapes of the first positioning groove 311 and the second positioning groove 331 with the outer wall shape of the battery 4, the first positioning groove 311 and the second positioning groove 331 can closely fit the shape of the battery 4. This allows the first positioning plate 31 and the second positioning plate 33 to accurately determine the position of the battery 4 when centering and positioning it, ensuring the horizontal positioning accuracy of the battery 4. The opposing first positioning groove 311 and the second positioning groove 331 can firmly clamp the battery 4 from both sides. This positioning method not only prevents the battery 4 from moving horizontally, but also limits the battery 4 in the vertical direction, further improving the positioning stability of the battery 4. The design of the first positioning groove 311 and the second positioning groove 331 can reduce friction and collision between the battery 4 and the positioning plate. Since the inner wall shape of the positioning groove matches the outer wall shape of the battery 4, the pressure on the surface of the battery 4 is evenly distributed when it is clamped, thereby avoiding damage to the surface of the battery 4 caused by excessive local force.

[0048] The design of the first positioning groove 311 and the second positioning groove 331 can accommodate batteries 4 of different shapes and sizes. Whether it is a cylindrical battery 4 or a battery 4 of other shapes, the accurate positioning of the battery 4 can be achieved by adjusting the shape of the positioning groove. For example, for a cylindrical battery 4, the positioning groove can be designed as an arc shape that matches the side shape of the cylindrical battery 4, and for a prism-shaped battery 4, the positioning groove can be designed as a shape that matches the side shape of the prism-shaped battery 4, thereby meeting the positioning requirements of different types of batteries 4.

[0049] It is understood that the positioning device provided by this utility model can be applied to the production of various types of batteries, such as cylindrical batteries, prismatic batteries, blade batteries, and irregularly shaped batteries. The following explanation uses a cylindrical battery as an example.

[0050] In this first embodiment, the battery 4 is a cylindrical battery. The first positioning groove 311 is a first semi-circular positioning groove, and the second positioning groove 331 is a second semi-circular positioning groove. The inner diameter of the first semi-circular positioning groove is equal to the outer diameter of the cylindrical battery 4, and the inner diameter of the second semi-circular positioning groove is equal to the outer diameter of the cylindrical battery 4. The inner diameters of the first and second semi-circular positioning grooves are equal to the outer diameter of the cylindrical battery 4, allowing the positioning grooves to achieve a tight and precise fit with the outer circumference of the cylindrical battery 4. This fit minimizes the possibility of horizontal displacement of the battery 4, ensuring that the cylindrical battery 4 is always in the accurate predetermined position on the positioning device, providing a high degree of positioning accuracy for subsequent processes such as cleaning and spraying. Because the fit between the positioning groove and the outer circumference of the cylindrical battery 4 is uniform and tight, the clamping force from the positioning groove on the cylindrical battery 4 is evenly distributed on the circumferential surface when the cylindrical battery 4 is positioned and fixed. This not only avoids problems such as deformation of the cylindrical battery 4 casing due to excessive local stress, but also allows the battery 4 to better withstand the external forces in various production processes under stable stress, further ensuring its stable participation in the production process.

[0051] See Figures 3-8 The positioning fixture 1 provided in Embodiment 1 also includes a telescopic drive member 14; the base 11 has a top surface 110 and a mounting groove 112, the mounting groove 112 is recessed in the top surface 110, the mounting groove 112 has a bottom wall 1121 and a side wall 1122 connected to each other, the positioning post 12 is connected to the bottom wall 1121, and the adsorption hole 111 is opened in the bottom wall 1121; the telescopic drive member 14 is disposed in the mounting groove 112 and connected to the positioning post 12, and the telescopic drive member 14 is used to drive the positioning post 12 to be embedded in the positioning hole 41 of the battery 4.

[0052] By providing an mounting groove 112 and a telescopic drive 14 in the base 11, when the battery 4 has been placed on the base 11 manually or mechanically, the telescopic drive 14 can drive the positioning post 12 to move away from the bottom wall 1121 to extend the positioning post 12 out of the mounting groove 112, thereby embedding the positioning post 12 into the positioning hole 41 of the battery 4. This function can flexibly adjust the height of the positioning post 12 embedded in the positioning hole 41 according to the depth of different battery 4 positioning holes 41, ensuring that the battery 4 can be accurately positioned on the base 11, improving the versatility of the positioning device. When it is necessary to place the battery 4 on the base 11 manually or mechanically or remove the battery 4 from the base 11, the telescopic drive 14 can drive the positioning post 12 to move closer to the bottom wall 1121 to disengage the positioning post 12 from the positioning hole 41 of the battery 4 and completely hide the positioning post 12 in the mounting groove 112. This function facilitates both placing the battery 4 on the base 11 and removing the battery 4 from the base 11.

[0053] In some embodiments, the telescopic drive 14 is an automatic rebound structure such as a spring or sheet.

[0054] In other embodiments, the telescopic drive 14 may also be, but is not limited to, an electric push rod, a pneumatic telescopic cylinder, an electromagnetic telescopic device, etc.

[0055] The positioning fixture 1 also includes a first sealing ring 15, which is connected to the top surface 110 of the base 11 and supports the bottom surface 40 of the battery 4. The first sealing ring 15 provides a seal on the mounting groove 112 of the positioning fixture 1. When the adsorption hole 111 adsorbs the battery 4, the first sealing ring 15 effectively prevents air from entering the mounting groove 112 from the edge, ensuring a tight seal between the adsorption hole 111 and the battery 4. This helps improve the adsorption effect, ensuring that the adsorption force can act stably on the battery 4, avoiding a decrease in adsorption force due to air leakage, thereby improving the stability of the battery 4 during the positioning process.

[0056] In this embodiment, the top surface 110 of the base 11 is attached to the bottom surface 40 of the battery 4 by the first sealing ring 15.

[0057] Specifically, in this embodiment, the first sealing ring 15 is used to support the first surface 401 of the battery 4. That is, when the battery 4 is placed on the base 11, the first sealing ring 15 contacts the first surface 401.

[0058] The positioning fixture 1 also includes a second sealing ring 16, which is connected to the bottom wall 1121 and supports the bottom surface 40 of the battery 4. The second sealing ring 16 has a through hole 161, and the positioning post 12 is disposed in the through hole 161. Multiple adsorption holes 111 are distributed around the second sealing ring 16. By setting the second sealing ring 16, the sealing between the adsorption holes 111 and the battery 4 can be further improved. This helps to further improve the adsorption effect of the adsorption holes 111 on the battery 4, ensuring that the adsorption force can act more stably on the battery 4.

[0059] Specifically, in this embodiment, the second sealing ring 16 is used to support the first surface 401 of the battery 4. That is, when the battery 4 is placed on the base 11, the second sealing ring 16 contacts the second surface 402.

[0060] See Figure 8 When the battery 4 is placed on the base 11, the bottom wall 1121, the side wall 1122, the bottom surface 40, the first sealing ring 15 and the second sealing ring 16 together form a closed negative pressure cavity 133 that is connected to the adsorption hole 111. The negative pressure generating element 13 draws air from the negative pressure cavity 133 through the adsorption hole 111 so that a negative pressure is formed in the negative pressure cavity 133 and the battery 4 is adsorbed and fixed by the negative pressure.

[0061] The base 11 has an adsorption chamber 114 inside, and multiple adsorption holes 111 are connected to the adsorption chamber 114. The connecting pipe 131 is connected to the adsorption holes 111 through the adsorption chamber 114. That is, the connecting pipe 131 is connected to the adsorption holes 111 through the adsorption chamber 114. By using a method where multiple adsorption holes 111 are connected to the adsorption chamber 114, the adsorption chamber 114 provides a relatively independent space for the adsorption holes 111, which helps to concentrate negative pressure, enabling the adsorption holes 111 to adsorb and fix the battery 4 more quickly and effectively. Compared with the method where multiple connecting pipes 131 are directly connected to multiple adsorption holes 111, the adsorption chamber 114 makes the adsorption effect of the adsorption holes 111 more uniform and improves the adsorption efficiency.

[0062] The working process of the positioning device provided in Embodiment 1 of this utility model is as follows: When the battery 4 has been placed on the base 11 by mechanical equipment, the first positioning plate 31 and the second positioning plate 33 of the centering positioning mechanism 3 approach the battery 4. If the central axis of the battery 4 is not initially aligned with the central axis of the base 11, the mutual approach of the first positioning plate 31 and the second positioning plate 33 will contact the outer wall of the battery 4 and push the battery 4 to move on the top surface 110 so that the central axis of the battery 4 is aligned with the central axis of the base 11. If the central axis of the battery 4 is initially aligned with the central axis of the base 11, the mutual approach of the first positioning plate 31 and the second positioning plate 33 will not push the battery 4 to move on the top surface 110. Then, the negative pressure generator 13 provides negative pressure to the adsorption hole 111 so that the battery 4 is adsorbed and fixed on the base 11 through the adsorption hole 111. The positioning post 12 is driven to extend upward by the telescopic drive 14 so that the positioning post 12 is embedded in the positioning hole 41 of the battery 4, thereby realizing the accurate positioning and firm fixation of the battery 4 on the base 11.

[0063] Example 2

[0064] See Figures 9-10 Unlike Embodiment 1, the top of the base 11 does not have a mounting groove 112. Instead, the top of the base 11 is recessed to the bottom to form a receiving groove 113. Multiple adsorption holes 111 are distributed around the receiving groove 113. The positioning post 12 is located in the receiving groove 113. The telescopic drive member 14 is located in the receiving groove 113 and connected to the positioning post 12. The telescopic drive member 14 is used to drive the positioning post 12 to embed into the positioning hole 41 of the battery 4.

[0065] In this second embodiment, the top surface 110 of the base 11 directly contacts and supports the bottom surface 40 of the battery 4.

[0066] In some other embodiments, a sealing structure such as a sealing ring or a sealing gasket may be provided on the top surface 110 of the base 11, through which the top surface 110 of the base 11 indirectly contacts and supports the bottom surface 40 of the battery 4.

[0067] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A battery positioning device for fixing a battery (4), the battery (4) having a bottom surface (40) and a positioning hole (41), the positioning hole (41) being recessed into the bottom surface (40); characterized in that, The battery positioning device includes: A positioning fixture (1) includes a base (11) and a positioning post (12). The base (11) has a top surface (110) for fitting the bottom surface (40) of the battery (4). The positioning post (12) is connected to the base (11) and is used to be embedded in the positioning hole (41) of the battery (4). The base (11) is provided with a plurality of adsorption holes (111) spaced around the positioning post (12) for adsorbing and fixing the battery (4).

2. The battery positioning device according to claim 1, characterized in that, The positioning fixture (1) further includes a negative pressure generating element (13), which includes a connecting pipe (131); The connecting pipe (131) is connected to the base (11) and communicates with the adsorption hole (111).

3. The battery positioning device according to claim 1, characterized in that, The positioning fixture (1) further includes a telescopic drive (14), which is connected to the positioning post (12) and is used to drive the positioning post (12) to be embedded in the positioning hole (41) of the battery (4).

4. The battery positioning device according to claim 3, characterized in that, The base (11) also has a mounting groove (112) recessed in the top surface (110). The mounting groove (112) has a bottom wall (1121) and a side wall (1122) connected to each other. The positioning post (12) is connected to the bottom wall (1121), and the suction hole (111) is opened in the bottom wall (1121). The positioning post (12) and the telescopic drive (14) are both located in the mounting groove (112).

5. The battery positioning device according to claim 4, characterized in that, The positioning fixture (1) further includes a first sealing ring (15) and a second sealing ring (16). The first sealing ring (15) is connected to the top surface (110) and is used to support the bottom surface (40) of the battery (4). The second sealing ring (16) is connected to the bottom wall (1121) and is used to support the bottom surface (40) of the battery (4). The second sealing ring (16) has a through hole (161). The positioning post (12) is disposed in the through hole (161). A plurality of adsorption holes (111) are distributed around the second sealing ring (16) at intervals.

6. The battery positioning device according to claim 3, characterized in that, The base (11) also has a receiving groove (113) which is recessed in the top surface (110). A plurality of adsorption holes (111) are distributed around the receiving groove (113) at intervals. The positioning post (12) and the telescopic drive member (14) are both located in the receiving groove (113).

7. The battery positioning device according to any one of claims 4-6, characterized in that, The telescopic drive component (14) is a spring or a spring sheet.

8. The battery positioning device according to claim 2, characterized in that, It also includes a rotary drive mechanism (2); The central axis of the connecting pipe (131) coincides with the central axis of the base (11); The rotary drive mechanism (2) is connected to the connecting pipe (131) and can drive the connecting pipe (131) to rotate around the central axis of the connecting pipe (131) so as to drive the base (11) to rotate around the central axis of the base (11).

9. The battery positioning device according to claim 1, characterized in that, It also includes a centering and positioning mechanism (3), which includes a first positioning plate (31), a first driving device (32), a second positioning plate (33), and a second driving device (34). The first positioning plate (31) is located on one side of the base (11). The first driving device (32) is connected to the first positioning plate (31) and is used to drive the first positioning plate (31) to move closer to or away from the battery (4) on the base (11). The second positioning plate (33) is located on the side of the base (11) away from the first positioning plate (31). The second driving device (34) is connected to the second positioning plate (33) and is used to drive the second positioning plate (33) to move closer to or away from the battery (4) on the base (11). The positioning hole (41) is located at the center of the bottom surface (40), and the central axis of the positioning post (12) coincides with the central axis of the base (11).

10. The battery positioning device according to claim 9, characterized in that, The first positioning plate (31) is recessed at one end near the second positioning plate (33) and in a direction away from the second positioning plate (33) with a first positioning groove (311). The shape of the groove wall of the first positioning groove (311) matches the shape of the outer wall of the battery (4). The second positioning plate (33) is recessed at one end near the first positioning plate (31) and in a direction away from the first positioning plate (31) with a second positioning groove (331). The shape of the groove wall of the second positioning groove (331) matches the shape of the outer wall of the battery (4). The second positioning groove (331) and the first positioning groove (311) are arranged opposite to each other. When the centering and positioning mechanism (3) is in the centering state, a limiting groove (330) is formed between the first positioning groove (311) and the second positioning groove (331), and the central axis of the limiting groove (330) coincides with the central axis of the positioning column (12).

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