Fixing device for battery cell detection and power battery production line

Abstract

The utility model discloses a fixing device for battery cell detection and a power battery production line. The fixing device for battery cell detection comprises a rack, a transmission part, a tray, a pressing part and a driving part, the transmission part is movably mounted on the rack; the tray is installed on the conveying part and provided with an installation groove, and the side wall of the installation groove is provided with a channel communicating the installation groove with the outside. The pressing and abutting part is located on the side, provided with the channel, of the tray, can stretch into and be separated from the mounting groove from the channel, and can press and abut the object to the side wall, opposite to the channel, of the mounting groove when stretching into the mounting groove. And the driving part is mounted on the rack, is in driving connection with the pressing part and is used for driving the pressing part to extend into and separate from the mounting groove. According to the scheme, the battery cell in the mounting groove is pressed against the side wall, opposite to the channel, of the mounting groove through the pressing part, so that the battery cell is prevented from running due to a gap between the battery cell and the inner wall of the mounting groove, the alignment of a probe of the detection mechanism and a tab of the battery cell is effectively ensured, the detection stability and precision are improved, the structure is simple, and the cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery production equipment, and in particular to a fixing device for battery cell detection and a power battery production line. Background Art

[0002] Lithium batteries are currently the main practical batteries in China and an important component of rechargeable batteries. Together with the protection circuit board, they form a rechargeable battery, which can be used as the power storage part of the rechargeable battery. The quality of the battery directly determines the quality of the rechargeable battery.

[0003] For example, patent CN217238328U discloses a lithium battery module cell polarity and pressure difference detection device, which places the battery cell on a mobile tooling plate, and the transmission chain drives the mobile tooling plate to move. At the same time, the battery cell is detected by probes on the fixed substrate and the mobile tooling plate, and the battery cell is limited by the limit slot and limit rod on the mobile tooling plate to achieve stable detection of the battery cell.

[0004] However, in order to improve the utilization efficiency of the device, the same detection device is generally used to detect battery cells of various models and sizes. That is, the limit slots need to place battery cells of different sizes, resulting in a gap between the limit slots and the battery cells, which makes the battery cells easy to move and causes inaccurate positioning problems at the detection station. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and propose a fixing device for battery cell detection and a power battery production line to solve the technical problem in the prior art that the limiting slots need to place battery cells of different sizes, resulting in a gap between the limiting slots and the battery cells, which makes the battery cells easy to move and causes inaccurate positioning at the detection station.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a fixing device for battery cell detection, comprising:

[0008] frame;

[0009] A transmission unit, movably mounted on the frame;

[0010] A tray, mounted on the transmission part and having a mounting groove, wherein a side wall of the mounting groove is provided with a passage connecting the mounting groove with the outside;

[0011] a pressing portion, located on a side of the tray where the channel is provided, and capable of extending from the channel into and out of the mounting slot, and when extending into the mounting slot, capable of pressing an object against a side wall of the mounting slot opposite to the channel; and

[0012] The driving part is installed on the frame and is drivingly connected with the pressing part, and is used for driving the pressing part to extend into and out of the installation groove.

[0013] In some embodiments, the pressing portion includes a pressing plate and an elastic pad, the pressing plate is located on a side of the tray where the channel is provided, and can extend from the channel into and out of the mounting groove, and the elastic pad is connected to a side of the pressing plate close to the channel;

[0014] The driving portion is drivingly connected to the pressing plate to drive the pressing plate to extend into and out of the mounting groove.

[0015] In some embodiments, the elastic pad is detachably connected to the pressing plate.

[0016] In some embodiments, a connecting screw hole is provided on one side of the pressure plate close to the elastic pad, and a through hole is provided on the elastic gasket corresponding to the connecting screw hole. The pressure plate also includes a connecting bolt, and the threaded section of the connecting bolt extends into the through hole and is threadedly connected to the connecting screw hole.

[0017] In some embodiments, the tray is provided in plurality, the plurality of trays are arranged at intervals along the moving direction of the transmission part, and the plurality of channels are arranged on the same side;

[0018] The pressure plate also includes a connecting plate, which is located on a side of the tray where the channel is provided. The driving part is drivingly connected to the connecting plate and is used to drive the connecting plate to approach and move away from the tray. There are multiple pressure plates, and the multiple pressure plates are connected to the connecting plate at intervals along the moving direction of the transmission part.

[0019] In some embodiments, the frame is provided with a transmission position and a detection position, the detection position is used to install a detection mechanism, the transmission part moves back and forth between the transmission position and the detection position, and the pressing part extends from the channel into the installation groove when the tray moves to the detection position.

[0020] In some embodiments, the frame is provided with a mounting portion extending along the moving direction of the transmission portion, the driving portion is mounted on the mounting portion, and the position of the mounting portion in the extending direction of the mounting portion is adjustable.

[0021] In some embodiments, the mounting portion is a fixing groove extending along the moving direction of the transmission portion, and a limiting protrusion is provided at the opening end of the fixing groove;

[0022] The driving part includes a fixing frame, a fixing bolt, a fixing nut and a driving motor. The fixing frame is provided with a fixing hole corresponding to the fixing groove. The limiting head of the fixing bolt is located in the fixing groove and is stopped by the limiting protrusion. The threaded section of the fixing bolt passes through the fixing hole from the open end. The fixing nut is threaded on the threaded section of the fixing bolt and is located on a side of the fixing frame away from the fixing groove. The driving motor is installed on the fixing frame and is drivingly connected to the pressing part.

[0023] In some embodiments, the transmission part is a transmission chain; and / or,

[0024] The battery cell detection fixing device also includes multiple groups of limit blocks arranged from the inside to the outside, each group has four limit blocks, which are respectively arranged at the four corners of the installation groove, and the inner limit blocks are connected to the inner side walls of the outer limit blocks.

[0025] In a second aspect, the utility model further provides a power battery production line, comprising a fixing device for battery cell detection as described in any one of the above items.

[0026] Compared with the prior art, in the fixing device for battery cell detection provided by the utility model, when a small-sized battery cell is placed in the installation groove, the driving part can drive the pressing part to extend into the installation groove from the channel of the tray, so that the battery cell in the installation groove is pressed against the side wall opposite to the installation groove and the channel by the pressing part, so as to avoid the battery cell running due to the gap between the battery cell and the inner wall of the installation groove, thereby effectively ensuring that the probe of the detection mechanism is aligned with the pole ear of the battery cell, improving the detection stability and accuracy, and the structure is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a partial schematic diagram of a fixing device and a detection mechanism for battery cell detection provided by an embodiment of the utility model;

[0028] Figure 2 yes Figure 1 A partial schematic diagram of another angle of the fixture for testing the battery cells;

[0029] Figure 3 yes Figure 2 A schematic cross-sectional view of a fixture for testing a battery cell;

[0030] Figure 4 yes Figure 2 A schematic diagram of the structure of the middle pressure contact part;

[0031] Figure 5 yes Figure 4 AA section view of the middle pressure contact part;

[0032] Figure 6 yes Figure 3 The enlarged schematic diagram of point B in the middle;

[0033] Figure 7 yes Figure 2 Schematic diagram of the middle drive unit.

[0034] Description of reference numerals:

[0035] 1. Rack; 11. Detection position; 12. Transmission position; 13. Installation part; 13a. Fixing groove; 2. Transmission part; 21. Transmission chain; 3. Tray; 3a. Installation groove; 3b. Channel; 4. Pressing part; 41. Pressing plate; 41a. Connecting screw hole; 42. Elastic pad; 42a. Through hole; 43. Connecting plate; 5. Driving part; 51. Fixing frame; 51a. Fixing hole; 52. Driving motor; 6. Limiting block; 7. Detection mechanism. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In order to solve the technical problem that the limit slot needs to place battery cells of different sizes, resulting in a gap between the limit slot and the battery cell, which makes the battery cell easy to move and causes inaccurate positioning at the detection station, the utility model provides a fixing device for battery cell detection, which can prevent the battery cell from moving due to the gap between it and the inner wall of the installation slot, thereby effectively ensuring that the probe of the detection mechanism is aligned with the pole ear of the battery cell, improving the detection stability and accuracy, and has a simple structure and low cost.

[0038] It should be noted that the battery cell detection fixture described in the present invention is used for but not limited to power battery production lines, etc. For the convenience of explanation, in the present invention, only the application of the battery cell detection fixture in a power battery production line is taken as an example for explanation, and the principle of applying the battery cell detection fixture in other types of equipment is essentially the same as the principle applied in the power battery production line, which will not be elaborated here.

[0039] See also Figure 1 and Figure 2 , Figure 1 and Figure 2It is a schematic diagram of the structure of a fixing device for battery cell detection in an embodiment of the utility model, wherein the fixing device for battery cell detection comprises a frame 1, a transmission part 2, a tray 3, a pressing part 4 and a driving part 5; the transmission part 2 is movably mounted on the frame 1; the tray 3 is mounted on the transmission part 2, and has a mounting groove 3a, and the side wall of the mounting groove 3a is provided with a channel 3b connecting the mounting groove 3a with the outside; the pressing part 4 is located on a side of the tray 3 where the channel 3b is provided, and can extend into and out of the mounting groove 3a from the channel 3b, and when extending into the mounting groove 3a, can press an object against the side wall of the mounting groove 3a opposite to the channel 3b; the driving part 5 is mounted on the frame 1, and is drivingly connected to the pressing part 4, and is used to drive the pressing part 4 to extend into and out of the mounting groove 3a.

[0040] In the fixture for battery cell detection provided by the utility model, when a small-sized battery cell is placed in the installation groove 3a, the driving part 5 can drive the pressing part 4 to extend from the channel 3b of the tray 3 into the installation groove 3a, so that the battery cell in the installation groove 3a is pressed against the side wall of the installation groove 3a and the channel 3b opposite to each other by the pressing part 4, so as to avoid the battery cell running due to the gap between the battery cell and the inner wall of the installation groove 3a, thereby effectively ensuring that the probe of the detection mechanism 7 is aligned with the pole ear of the battery cell, improving the detection stability and accuracy, and the structure is simple and the cost is low. It should be noted that in this embodiment, the two opposite side walls of the installation groove 3a are respectively provided with channels 3b to improve the convenience of assembly.

[0041] In one embodiment, see Figures 3 to 5 The pressing part 4 includes a pressing plate 41 and an elastic pad 42. The pressing plate 41 is located on a side of the tray 3 where a channel 3b is provided, and can extend into and out of the mounting groove 3a from the channel 3b. The elastic pad 42 is connected to a side of the pressing plate 41 close to the channel 3b. The driving part 5 is drivingly connected to the pressing plate 41 to drive the pressing plate 41 to extend into and out of the mounting groove 3a.

[0042] In this embodiment, an elastic pad 42 is provided on one end of the pressing plate 41 extending into the mounting groove 3a to prevent the pressing plate 41 from directly pressing against the battery cell and causing damage to the battery cell, thereby improving safety performance. In addition, in this solution, the elastic pad 42 is detachably connected to the pressing plate 41. In this way, when the elastic pad 42 is severely worn, it can be replaced in time, which improves convenience and ensures that the pressing portion 4 can stably press against the battery cell when the battery cell is damaged.

[0043] In one embodiment, see Figure 5 A connecting screw hole 41a is provided on one side of the pressing plate 41 close to the elastic pad 42, and a through hole 42a is provided on the elastic pad 42 corresponding to the connecting screw hole 41a. The pressing plate 41 also includes a connecting bolt, a threaded section of the connecting bolt extends into the through hole 42a and is threadedly connected to the connecting screw hole 41a.

[0044] In this solution, the elastic pad 42 and the pressing plate 41 are detachably connected by connecting bolts passing through the through hole 42a and the connecting screw hole 41a, which is simple and convenient to operate. Specifically, in this embodiment, there are two through holes 42a, and correspondingly, there are two connecting bolts and two connecting screw holes 41a.

[0045] In one embodiment, a plurality of trays 3 are provided, and the plurality of trays 3 are arranged at intervals along the moving direction of the transmission part 2, and the plurality of channels 3b are arranged on the same side; the pressing plate 41 further includes a connecting plate 43, and the connecting plate 43 is located on the side of the tray 3 where the channel 3b is provided, and the driving part 5 is drivingly connected to the connecting plate 43, and is used to drive the connecting plate 43 to approach and move away from the tray 3, and a plurality of pressing plates 41 are provided, and the plurality of pressing plates 41 are connected to the connecting plate 43 at intervals along the moving direction of the transmission part 2. Specifically, two pressing plates are provided in this solution.

[0046] In this embodiment, a plurality of pressing plates 41 are provided, and the plurality of pressing plates 41 are spaced apart along the moving direction of the transmission part 2. Thus, when the driving part 5 drives the connecting plate 43, it can simultaneously drive the plurality of pressing plates 41 to extend into the mounting grooves 3a of the plurality of trays 3 respectively, so as to achieve the clamping and limiting of the plurality of battery cells and improve the fixing efficiency of the battery cells.

[0047] In one embodiment, the frame 1 is provided with a transmission position 12 and a detection position 11, the detection position 11 is used to install the detection mechanism 7, the transmission part 2 moves back and forth between the transmission position 12 and the detection position 11, and the pressing part 4 extends from the channel 3b into the installation groove 3a when the tray 3 moves to the detection position 11.

[0048] In this embodiment, when the tray 3 follows the transmission part 2 to move to the detection position 11, the driving part 5 drives the pressing part 4 to press against the battery cell to prevent the battery cell from deviating during the detection process. In this way, only one set of pressing parts 4 and driving parts 5 need to be set, which saves costs. It should be noted that in this solution, the transmission part 2 is set in the form of a transmission chain 21, and the detection mechanism 7 can adopt the existing technology, which will not be described in detail here. In addition, in one embodiment, the probe head of the detection mechanism 7 can move along multiple degrees of freedom under the control of the seat.

[0049] In one embodiment, the frame 1 is provided with a mounting portion 13 extending along the moving direction of the transmission portion 2 , the driving portion 5 is mounted on the mounting portion 13 , and the position of the mounting portion 13 in the extending direction thereof is adjustable.

[0050] In this embodiment, the position of the driving part 5 on the frame 1 can be flexibly adjusted by the mounting part 13, thereby improving the flexibility of the device. Figure 6 and Figure 7The mounting portion 13 is a fixing groove 13a extending along the moving direction of the transmission portion 2, and a limiting protrusion is provided at the open end of the fixing groove 13a; the driving portion 5 includes a fixing frame 51, a fixing bolt, a fixing nut and a driving motor 52. The fixing frame 51 is provided with a fixing hole 51a corresponding to the fixing groove 13a. The limiting head of the fixing bolt is located in the fixing groove 13a and is stopped by the limiting protrusion, and the threaded section of the fixing bolt passes through the fixing hole 51a from the open end. The fixing nut is threaded on the threaded section of the fixing bolt and is located on the side of the fixing frame 51 away from the fixing groove 13a. The driving motor 52 is installed on the fixing frame 51 and is drivingly connected to the pressing portion 4.

[0051] In this way, the position of the fixing frame 51 on the frame 1 can be adjusted by loosening or tightening the fixing nut, and the operation is simple and convenient. It should be noted that in this embodiment, the moving direction of the transmission chain 21 is horizontal, and there are two fixing holes 51a, which are arranged at intervals along the moving direction of the transmission chain 21, and each fixing hole 51a extends in the vertical direction, so that the adjustment of the fixing frame 51 is more flexible. In addition, in this solution, the driving motor 52 is a linear motor, and the connecting plate 43 is installed on the moving seat of the linear motor.

[0052] In one embodiment, the fixing device for battery cell detection also includes multiple groups of limit blocks 6 arranged from the inside to the outside, each group of limit blocks 6 is provided with four, and are respectively arranged at the four corners of the installation groove 3a, and the inner limit blocks 6 are connected to the inner side walls of the outer limit blocks 6.

[0053] In this embodiment, a plurality of groups of limit blocks 6 are arranged from the inside to the outside in the installation groove 3a, and each group of limit blocks 6 is arranged to form a limit space of a certain size, which can just fix the battery cells of the corresponding size without the need for the pressing part 4 to press, thereby improving the practicality of the device. It should be noted that only one group of limit blocks 6 is shown in the drawings of this embodiment.

[0054] In addition, the utility model also provides a power battery production line, which includes a fixture for detecting a battery cell as described in any one of the above. It should be noted that the detailed structure of the fixture for detecting a battery cell of the power battery production line can refer to the embodiment of the fixture for detecting a battery cell, which will not be repeated here; since the fixture for detecting a battery cell is used in the power battery production line of the utility model, the embodiment of the power battery production line of the utility model includes all technical solutions of all embodiments of the fixture for detecting a battery cell, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0055] In order to better understand the present invention, the following Figures 1 to 7 The technical solution of the utility model is described in detail:

[0056] At the loading point, small-sized battery cells are placed in the mounting grooves 3a of the tray 3. After the battery cells are placed, the tray 3 moves following the transmission chain 21. When the tray 3 moves to the detection position 11, the connecting plate 43 moves close to the tray 3 under the drive of the linear motor, so that the two pressing plates 41 extend into the corresponding mounting grooves 3a of the two trays 3 respectively, so as to press the battery cells against the side walls of the mounting grooves 3a to limit the movement of the battery cells; then the probe of the detection mechanism 7 moves toward the limited battery cells to detect the battery cells. After the detection is completed, the linear motor drives the connecting plate 43 away from the tray 3, so that the pressing plate 41 retreats from the mounting groove 3a; then the transmission chain 21 continues to drive the tray 3 to move, and then the linear motor drives the pressing plate 41 to enter the mounting groove 3a of the next group of trays 3.

[0057] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A fixing device for battery cell detection, characterized in that: include: frame; A transmission unit, movably mounted on the frame; A tray, mounted on the transmission part and having a mounting groove, wherein a side wall of the mounting groove is provided with a passage connecting the mounting groove with the outside; a pressing portion, located on a side of the tray where the channel is provided, and capable of extending from the channel into and out of the mounting slot, and when extending into the mounting slot, capable of pressing an object against a side wall of the mounting slot opposite to the channel; and The driving part is installed on the frame and is drivingly connected with the pressing part, and is used for driving the pressing part to extend into and out of the installation groove.

2. The battery cell detection fixture according to claim 1, characterized in that: The pressing part includes a pressing plate and an elastic pad, wherein the pressing plate is located at a side of the tray where the channel is provided and can extend from the channel into and out of the mounting groove, and the elastic pad is connected to a side of the pressing plate close to the channel; The driving portion is drivingly connected to the pressing plate to drive the pressing plate to extend into and out of the mounting groove.

3. The battery cell detection fixture according to claim 2, characterized in that: The elastic pad is detachably connected to the pressing plate.

4. The battery cell detection fixture according to claim 3, characterized in that: The pressing plate is provided with a connecting screw hole on one side close to the elastic pad, the elastic pad is provided with a through hole corresponding to the connecting screw hole, and the pressing plate also includes a connecting bolt, the screw section of the connecting bolt extends into the through hole and is screwed to the connecting screw hole.

5. The battery cell detection fixture according to claim 2, characterized in that: There are a plurality of trays, the plurality of trays are arranged at intervals along the moving direction of the transmission part, and the plurality of channels are arranged on the same side; The pressure plate also includes a connecting plate, which is located on a side of the tray where the channel is provided. The driving part is drivingly connected to the connecting plate and is used to drive the connecting plate to approach and move away from the tray. There are multiple pressure plates, and the multiple pressure plates are connected to the connecting plate at intervals along the moving direction of the transmission part.

6. The battery cell detection fixture according to claim 1, characterized in that: The frame is provided with a transmission position and a detection position, the detection position is used to install the detection mechanism, the transmission part moves back and forth between the transmission position and the detection position, and the pressing part extends from the channel into the installation groove when the tray moves to the detection position.

7. The battery cell detection fixture according to claim 6, characterized in that: The frame is provided with a mounting portion extending along the moving direction of the transmission portion, the driving portion is mounted on the mounting portion, and the position of the mounting portion in the extending direction thereof is adjustable.

8. The battery cell detection fixture according to claim 7, characterized in that: The mounting portion is a fixing groove extending along the moving direction of the transmission portion, and a limiting protrusion is provided at the opening end of the fixing groove; The driving part includes a fixing frame, a fixing bolt, a fixing nut and a driving motor. The fixing frame is provided with a fixing hole corresponding to the fixing groove. The limiting head of the fixing bolt is located in the fixing groove and is stopped by the limiting protrusion. The threaded section of the fixing bolt passes through the fixing hole from the open end. The fixing nut is threaded on the threaded section of the fixing bolt and is located on a side of the fixing frame away from the fixing groove. The driving motor is installed on the fixing frame and is drivingly connected to the pressing part.

9. The battery cell detection fixture according to claim 1, characterized in that: The transmission part is a transmission chain; and / or, The battery cell detection fixing device also includes multiple groups of limit blocks arranged from the inside to the outside, each group has four limit blocks, which are respectively arranged at the four corners of the installation groove, and the inner limit blocks are connected to the inner side walls of the outer limit blocks.

10. A power battery production line, characterized in that: It comprises a fixing device for battery cell detection as described in any one of claims 1 to 9.

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