CN219319629U - Cell stacking extrusion force measuring device - Google Patents

Abstract

The utility model discloses a cell stacking extrusion force measuring device. The electric core stacking extrusion force measuring device comprises a base, a fixing assembly and an extrusion force measuring assembly, wherein a plurality of electric cores are abutted between the fixing assembly and the extrusion force measuring assembly, the extrusion force measuring assembly comprises a pressure plate and a movable plate, the pressure plate is connected with the movable plate in a sliding mode along the extrusion direction, a pressure sensor is fixedly arranged between the movable plate and the pressure plate, the pressure sensor is abutted between the movable plate and the pressure plate, and a corresponding detection value can be given out according to the distance between the movable plate and the pressure plate. The pressure sensor indirectly measures the extrusion force received by the battery cell through the change condition of the distance between the movable plate and the pressure plate, can meet the requirement of whole-course detection, and can extrude the surface of the battery cell through the pressure plate, and can not damage the surface of the battery cell. Meanwhile, the pressure sensor is fixedly arranged between the movable plate and the pressure plate, so that the relative consistent detection position can be maintained, and the accuracy of the detection value can be further improved.

Description

Cell Stacking Extrusion Force Measuring Device

technical field

The utility model relates to the technical field of battery production, in particular to an electric core stacking extrusion force measuring device.

Background technique

During the production process of battery modules, a stacking and extrusion process is required. Specifically, the battery cells are arranged and stacked, and after the stacking is completed, the compression mechanism is used to squeeze the arranged multiple battery cells to the size required for production.

The existing pressing mechanism can realize the extrusion of the electric core, but the extrusion force needs to be measured during the extrusion process to meet the needs of safety and production. During the measurement process, it is generally necessary to stop the extrusion first to expose the extruded surface of the cell, place the pressure sensor on the extruded surface of the cell, then squeeze again, and read the detection value of the pressure sensor. But in this process, there are the following problems:

1. The extrusion force cannot be measured in the whole process, resulting in the inability to respond in time when the pressure of the extrusion cell is too high;

2. The pressure sensor is placed manually, which may be eccentric due to incorrect and inaccurate placement, resulting in inaccurate detection values;

3. During the measurement process, the pressure sensor may damage the squeezed surface of the cell.

Based on the above, there is an urgent need for a cell stacking extrusion force measuring device that can solve the above technical problems.

Utility model content

The purpose of the utility model is to provide a cell stacking extrusion force measuring device, which can measure the extrusion force in the whole process and prevent the extruded surface of the cell from being damaged.

For this purpose, the utility model adopts the following technical solutions:

Cell stack extrusion force measuring device, including:

A base, the above-mentioned base is provided with a constraining structure, the above-mentioned constraining structure is used to arrange a plurality of cells along the extrusion direction, and several of the above-mentioned cells form an extrusion unit;

a fixing component, the above-mentioned fixing component is fixedly connected to the above-mentioned base;

Extrusion force measuring assembly, the above extrusion force measuring assembly is fixedly connected to the above base, the above extrusion force measuring assembly includes a pressure plate and a movable plate, the above pressure plate is slidably connected to the above movable plate along the extrusion direction, and the above movable plate and the above-mentioned pressure plate are movable along the above-mentioned extruding direction, and a pressure sensor is fixedly abutted between the above-mentioned movable plate and the above-mentioned pressure plate;

Along the extrusion direction, the extrusion unit has two ends, the fixed assembly abuts against one end of the extrusion unit, and the movable plate drives the pressure plate to abut against the other end of the extrusion unit .

Optionally, a first linear bearing passes through the movable plate, a first sliding shaft slides through the first linear bearing, and the first sliding shaft is fixedly connected to the pressure plate.

Optionally, the above-mentioned first sliding shaft is provided with a clip spring for the first shaft, and the above-mentioned clip spring for the first shaft abuts against the above-mentioned pressure plate.

Optionally, the above-mentioned first sliding shaft is provided with a circlip for the second shaft, one side of the above-mentioned first linear bearing is provided with the above-mentioned circlip for the first shaft, and the other side of the above-mentioned first linear bearing is provided with the above-mentioned The second shaft uses a circlip.

Optionally, the pressure plate is further provided with a backing plate, and the pressure plate abuts against the other end of the extrusion unit through the backing plate.

Optionally, the above-mentioned extrusion force measuring assembly further includes a second bottom plate, a linear bearing installation plate, a second sliding shaft and a second linear bearing, the above-mentioned second bottom plate is installed on the above-mentioned base, and the above-mentioned linear bearing installation plate is installed on the above-mentioned second The bottom plate, the second linear bearing penetrates the linear bearing mounting plate, the second sliding shaft penetrates the second linear bearing, the second sliding shaft slides along the extrusion direction, and the movable plate is installed on the first Two ends of the sliding shaft.

Optionally, the above-mentioned extrusion force measuring assembly also includes a lead screw slider and a lead screw, the above-mentioned lead screw slider passes through the above-mentioned linear bearing installation plate, the above-mentioned lead screw slider is provided with a threaded hole, and the above-mentioned lead screw engages and passes through It is provided in the threaded hole, and the end of the screw is in contact with the movable plate.

Optionally, a thrust bearing is provided at the end of the above-mentioned screw, and the above-mentioned screw abuts against the above-mentioned movable plate through the above-mentioned thrust bearing.

Optionally, the above-mentioned lead screw is equipped with a handle.

Optionally, a reinforcing plate is installed between the second base plate and the linear bearing installation plate.

The beneficial effect of the cell stacking extrusion force measuring device provided by the utility model is that: by fixing the abutting pressure sensor between the movable plate and the pressure plate, and abutting against one end of the extrusion unit through the pressure plate, through The fixed component abuts against the other end of the extrusion unit, so that the pressure sensor indirectly measures the extrusion force on the cell through the change of the distance between the movable plate and the pressure plate, which meets the needs of the whole process of detection and avoids extrusion. Phenomenon that cannot respond in time when the pressure of the piezoelectric core is too high. Pressing the surface of the battery core through the pressure plate will not cause damage to the surface of the battery core. Moreover, since the pressure sensor is fixedly arranged between the movable plate and the pressure plate, relatively consistent detection positions can be maintained, and the accuracy of detection values can be further improved.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of the cell stacking extrusion force measuring device in the utility model;

Fig. 2 is a top view of the cell stacking extrusion force measuring device in the utility model;

Fig. 3 is a front view of the cell stacking extrusion force measuring device in the utility model;

Fig. 4 is a left view of the cell stacking extrusion force measuring device in the utility model;

Fig. 5 is a partial enlarged view of A in Fig. 3 .

In the picture:

1. Base; 101. First bottom plate; 102. Limiting plate; 103. Elevator plate; 104. Insulating pad;

2. Extrusion force measuring component; 201, second bottom plate; 202, linear bearing installation plate; 203, second sliding shaft; 204, axial limiter; 205, second linear bearing; 206, reinforcement plate; 207, Lead screw slide block; 208, leading screw; 209, handle; 210, thrust bearing; 211, thrust bearing fixed seat; 212, third shaft with jump ring; 213, movable plate; 214, the first linear bearing; 215, The first sliding shaft; 216, the first axis with a circlip; 217, the second axis with a circlip; 218, a pressure plate; 219, a pressure sensor; 220, a backing plate;

3. Fixed component; 301, third bottom plate; 302, reinforcing rib; 303, limit mounting plate; 304, backing plate.

Detailed ways

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance. Wherein, the terms "first position" and "second position" are two different positions.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The technical solutions of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The cell stack extrusion force measuring device provided by the present invention will be described below with reference to FIGS. 1 to 5 .

As shown in Figure 1, the cell stacking extrusion force measuring device includes a base 1, a fixing assembly 3 and an extrusion force measuring assembly 2, the fixing assembly 3 and the extrusion force measuring assembly 2 are fixedly arranged on the base 1, and several electric Connected between the fixed assembly 3 and the extrusion force measuring assembly 2.

The base 1 is provided with a constraining structure, as shown in Figure 2 and Figure 3, the constraining structure comprises a first base plate 101, both sides of the first base plate 101, along the direction of extrusion, are provided with limiting plates 102, the first base plate 101 and The two limiting plates 102 form a groove-like structure, and several cells can be arranged in the groove-like structure along the extrusion direction to form an extrusion unit. Optionally, in this embodiment, a riser assembly is also provided under the first bottom plate 101, and the raise assembly includes several riser plates 103, which can make the extrusion unit, the fixing assembly 3 and the extrusion force measuring assembly 2 be in the same position. The corresponding height facilitates the measurement of the extrusion force and improves the accuracy of the detection value.

The extrusion force measuring assembly 2 includes a pressure plate 218 and a movable plate 213. The pressure plate 218 is slidably connected to the movable plate 213 along the extrusion direction, and the movable plate 213 and the pressure plate 218 are movable along the extrusion direction. The movable plate 213 and the pressure A pressure sensor 219 is fixedly arranged between the plates 218 , and the pressure sensor 219 abuts between the movable plate 213 and the pressure plate 218 , and can provide a corresponding detection value corresponding to the distance between the movable plate 213 and the pressure plate 218 .

In use, for example, along the extrusion direction, the fixed assembly 3 abuts against one end of the extrusion unit, and the movable plate 213 drives the pressure plate 218 to abut against the other end of the extrusion unit. As the movable plate 213 pushes the pressure plate 218 to squeeze the cell, the pressure sensor 219 abutted between the movable plate 213 and the pressure plate 218 is constantly under pressure because the distance between the two is reduced, so as to meet the requirement of full detection. Moreover, since the pressure sensor 219 is fixedly arranged between the movable plate 213 and the pressure plate 218, relatively consistent detection positions can be maintained. Optionally, the pressure plate 218 is also provided with a backing plate 220, through which the pressure plate 218 abuts against the other end of the extruding unit, which can further protect the surface of the cell and prevent the surface of the cell from being damaged.

By fixing the abutting pressure sensor 219 between the movable plate 213 and the pressure plate 218, and abutting against one end of the extrusion unit through the pressure plate 218, and abutting against the other end of the extrusion unit through the fixed assembly 3, The pressure sensor 219 can indirectly measure the extrusion force on the battery cell through the change of the distance between the movable plate 213 and the pressure plate 218, so as to meet the needs of the whole process of detection, and avoid the failure to make timely adjustments when the pressure of the extrusion cell is too large. coping phenomenon. Pressing the surface of the battery core through the pressure plate 218 will not cause damage to the surface of the battery core. Moreover, since the pressure sensor 219 is fixedly arranged between the movable plate 213 and the pressure plate 218, a relatively consistent detection position can be maintained, and the accuracy of the detection value can be further improved.

Referring to Fig. 3 and Fig. 5, the extrusion force measuring assembly 2 includes a second base plate 201, a linear bearing mounting plate 202, a second sliding shaft 203 and a second linear bearing 205, the second base plate 201 is installed on the base 1, and the linear bearing The mounting plate 202 is installed on the second bottom plate 201, the second linear bearing 205 is penetrated on the linear bearing mounting plate 202, the second sliding shaft 203 is penetrated on the second linear bearing 205, and the second sliding shaft 203 is slidably arranged along the extrusion direction, The movable plate 213 is mounted on an end of the second sliding shaft 203 . Through the linear bearing mounting plate 202, the second sliding shaft 203 and the second linear bearing 205, the movable plate 213 can be moved along the extruding direction, and then it is convenient to push the pressure plate 218 through the movable plate 213 to squeeze and measure the cell. force. Optionally, as shown in FIG. 3 , a reinforcement plate 206 is installed between the second bottom plate 201 and the linear bearing installation plate 202 , which can improve the structural strength of the extrusion force measuring assembly 2 .

Specifically, in this embodiment, the extrusion force measuring assembly 2 further includes a lead screw slider 207 and a lead screw 208, the lead screw slider 207 is installed on the linear bearing mounting plate 202, and the lead screw slider 207 is provided with a threaded hole , the lead screw 208 engages and passes through the threaded hole, and the end of the lead screw 208 abuts against the movable plate 213 . The lead screw 208 is equipped with a handle 209 , by turning the handle 209 , the lead screw moves axially relative to the threaded hole, thereby pushing the movable plate 213 to slide along the extruding direction.

Preferably, the end of the lead screw 208 is provided with a thrust bearing 210, and the side of the movable plate 213 away from the pressure sensor 219 is provided with a thrust bearing fixing seat 211, and the lead screw 208 abuts against the thrust bearing 210 and the thrust bearing fixing seat 211. The movable plate 213 prevents friction between the end of the lead screw 208 and the movable plate 213 , causing damage to the lead screw 208 or the movable plate 213 , thereby affecting the accuracy of the pressure sensor 219 . Optionally, the end of the lead screw 208 is provided with a circlip 212 for the third shaft, and the circlip 212 for the third shaft abuts against the thrust bearing fixing seat 211, which can further prevent the gap between the lead screw 208 and the thrust bearing fixing seat 211. wear and tear.

Continuing to refer to FIG. 5, the movable plate 213 is pierced with a first linear bearing 214, and the first linear bearing 214 is slidably pierced with a first sliding shaft 215, and the first sliding shaft 215 is fixedly connected to the pressure plate 218, so that The pressure plate 218 is slidably connected with the movable plate 213 along the extruding direction. Preferably, the first sliding shaft 215 is provided with a first shaft circlip 216 and a second shaft circlip 217, one side of the first linear bearing 214 is provided with a first shaft circlip 216, and the first linear bearing The other side of the 214 is provided with a snap spring 217 for the second shaft. The circlip 216 for the first shaft abuts against the pressure plate 218, which can prevent relative sliding between the first sliding shaft 215 and the pressure plate 218; the circlip 217 for the second shaft can abut against the first linear bearing 214, which can Prevent the first sliding shaft 215 from sliding away from the first linear bearing 214 .

Certainly, in some other embodiments, it is also possible to use only the first shaft circlip 216 , or only the second shaft circlip 217 , which is not specifically limited in the present invention. Similarly, as shown in FIG. 5 , an axial stopper 204 may also be provided at the end of the second sliding shaft 203 to prevent the second sliding shaft 203 from sliding away from the second linear bearing 205 .

As shown in Figure 4, the fixing assembly 3 includes a third bottom plate 301, a reinforcing rib 302, a space-limiting mounting plate 303 and a backing plate 304, the space-limiting mounting plate 303 is fixed on the third bottom plate 301 by the reinforcing rib 302, and the backing plate 304 is fixed On the limit mounting plate 303. Preferably, in this embodiment, the backing plate 304, the backing plate 220 and the above-mentioned limiting plate 102 are all made of insulating materials, and an insulating backing 104 is also provided between the first bottom plate 101 and the battery core, so that it is compatible with The cells that are in contact with each other are all insulating materials, which further enhances the safety in the production process.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (10)

1. The cell stacking extrusion force measuring device is characterized in that it includes: A base (1), the base (1) is provided with a constraining structure, the constraining structure is used to arrange a plurality of electric cores along the extrusion direction, and several electric cores form an extrusion unit; a fixing component (3), the fixing component (3) is fixedly connected to the base (1); An extrusion force measuring assembly (2), the extrusion force measuring assembly (2) is fixedly connected to the base (1), and the extrusion force measuring assembly (2) includes a pressure plate (218) and a movable plate (213 ), the pressure plate (218) is slidably connected to the movable plate (213) along the extrusion direction, and the movable plate (213) and the pressure plate (218) are movable along the extrusion direction , a pressure sensor (219) is fixedly abutted between the movable plate (213) and the pressure plate (218); Along the extrusion direction, the extrusion unit has two ends, the fixed assembly (3) abuts against one end of the extrusion unit, and the movable plate (213) drives the pressure plate (218) abuts against the other end of the extruding unit. 2. The cell stacking extrusion force measuring device according to claim 1, characterized in that, the movable plate (213) is pierced with a first linear bearing (214), and the first linear bearing (214) ) is slidably provided with a first sliding shaft (215), and the first sliding shaft (215) is fixedly connected to the pressure plate (218). 3. The cell stacking extrusion force measuring device according to claim 2, characterized in that, the first sliding shaft (215) is provided with a snap spring (216) for the first shaft, and the snap spring (216) for the first shaft is The spring (216) abuts against the pressure plate (218). 4. The cell stacking extrusion force measuring device according to claim 3, characterized in that, the first sliding shaft (215) is provided with a snap spring (217) for the second shaft, and the first linear bearing One side of the (214) is provided with the first shaft circlip (216), and the other side of the first linear bearing (214) is provided with the second shaft circlip (217). 5. The cell stacking extrusion force measuring device according to claim 2, characterized in that, the pressure plate (218) is also provided with a backing plate (220), and the pressure plate (218) passes through the backing plate (220). The backing plate (220) abuts against the other end of the extruding unit. 6. The cell stacking extrusion force measuring device according to claim 2, characterized in that, the extrusion force measuring assembly (2) further comprises a second bottom plate (201), a linear bearing mounting plate (202), a second Two sliding shafts (203) and a second linear bearing (205), the second bottom plate (201) is installed on the base (1), and the linear bearing installation plate (202) is installed on the second bottom plate (201) ), the second linear bearing (205) passes through the linear bearing mounting plate (202), the second sliding shaft (203) passes through the second linear bearing (205), and the second The sliding shaft (203) is slidably arranged along the extruding direction, and the movable plate (213) is installed on the end of the second sliding shaft (203). 7. The cell stacking extrusion force measuring device according to claim 6, characterized in that, the extrusion force measuring assembly (2) further comprises a lead screw slider (207) and a lead screw (208), the The lead screw slider (207) is passed through the linear bearing mounting plate (202), the lead screw slider (207) is provided with a threaded hole, and the lead screw (208) is engaged and passed through the threaded hole , the end of the lead screw (208) abuts against the movable plate (213). 8. The cell stacking extrusion force measuring device according to claim 7, characterized in that, the end of the screw (208) is provided with a thrust bearing (210), and the screw (208) passes through the The thrust bearing (210) abuts against the movable plate (213). 9. The cell stacking extrusion force measuring device according to claim 7, characterized in that a handle (209) is installed on the lead screw (208). 10. The cell stacking extrusion force measuring device according to claim 6, characterized in that a reinforcement plate (206) is installed between the second bottom plate (201) and the linear bearing installation plate (202).

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