Device and method for automatically loading battery cell into shell

Abstract

The invention discloses an automatic battery cell shell entering device and method.The automatic battery cell shell entering device comprises a base, a jacking rod, a driving mechanism, an elastic piece and a detection mechanism, the jacking rod movably penetrates through the base and is used for jacking a battery cell, and the driving mechanism is used for driving the base to move in the direction close to a steel shell; one end of the elastic piece is connected to the base, the other end of the elastic piece is connected to the jacking rod, the elastic piece is used for driving the jacking rod to move in the direction close to the steel shell under driving of the base, and when the resistance borne by the battery cell entering the steel shell is larger than preset resistance, the elastic piece is stretched and deformed, and the base and the jacking rod move relatively; the detection mechanism is used for sending out an alarm signal when the relative movement of the base and the jacking rod is detected, and the driving mechanism receives the alarm signal and stops working. Therefore, the resistance of the battery cell entering the shell can be monitored, and safe assembly of the battery cell and the steel shell is ensured. The method is widely applied to the technical field of battery manufacturing.

Description

Technical Field

[0001] This application relates to the technical field of battery manufacturing, and particularly relates to an automatic cell casing-in device and method. Background Art

[0002] During the process of battery manufacturing, it is necessary to insert the cell into a steel shell. Currently, most cells are inserted into the shell through an automatic lifting mechanism. During the automatic cell casing-in process, due to dimensional errors between the outer diameter of the cell and the inner diameter of the steel shell, or errors in the relative positions of the cell and the steel shell, there may be a certain resistance when the cell is inserted into the steel shell. When the resistance is too large, the cell cannot be inserted into the shell normally, and forced insertion may cause damage to the cell or the steel shell. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides an automatic cell casing-in device and method, which can monitor the resistance of the cell during casing-in and ensure the safe assembly of the cell and the steel shell.

[0004] An automatic cell casing-in device according to an embodiment of the first aspect of this application includes:

[0005] A base;

[0006] A lifting rod, the lifting rod is movably inserted through the base, and the lifting rod is used to lift the cell;

[0007] A driving mechanism, the driving mechanism is used to drive the base to move towards the direction close to the steel shell;

[0008] An elastic member, one end of the elastic member is connected to the base, the other end of the elastic member is connected to the lifting rod, the elastic member is used to drive the lifting rod to move towards the direction close to the steel shell under the drive of the base, and when the resistance received by the cell entering the steel shell is greater than a preset resistance, the elastic member undergoes tensile deformation, and relative movement occurs between the base and the lifting rod;

[0009] A detection mechanism, the detection mechanism is used to send an alarm signal when detecting relative movement between the base and the lifting rod, and the driving mechanism receives the alarm signal and stops working.

[0010] The automatic cell casing device according to the embodiments of the present application has at least the following beneficial effects: By providing an elastic member connected between the base and the lifting rod, when the driving mechanism drives the base to move towards the steel casing, the lifting rod can move together with the base under the drive of the elastic member. At this time, the pulling force received by the lifting rod is greater than or equal to the sum of the gravity of the lifting rod and the cell. When the cell lifted by the lifting rod encounters an obstacle when entering the steel casing, the lifting rod receives a resistance force pointing away from the steel casing, and the upward movement of the lifting rod is blocked. When the resistance force received by the cell when entering the steel casing is greater than the preset resistance force (i.e., the pulling force of the base on the lifting rod minus the sum of the gravity of the lifting rod and the cell), the resistance force received by the lifting rod is greater than the pulling force. At this time, the base moves towards the steel casing relative to the lifting rod under the action of the driving mechanism, while the lifting rod remains stationary, so that relative movement occurs between the base and the lifting rod. At the same time, the elastic member undergoes tensile deformation under the drive of the base, so that the cell entering the steel casing is buffered. When the detection mechanism detects relative movement between the base and the lifting rod, an alarm signal is sent, and the driving mechanism stops working upon receiving the alarm signal, so that the cell stops casing, thereby ensuring the safety of the cell and the steel casing during the assembly process and avoiding damage to the cell or the steel casing caused by forced pushing when the cell casing encounters an obstacle.

[0011] According to some embodiments of the present application, the elastic member is a constant force spring.

[0012] According to some embodiments of the present application, the base is provided with a first fixing rod, the first fixing rod extends in the direction of the steel casing from the end connected to the base, the first end of the elastic member is connected to the base through the first fixing rod, the second end of the elastic member passes through the base and is connected to the end of the lifting rod away from the steel casing, and the first end and the second end are respectively located on both sides of the base.

[0013] According to some embodiments of the present application, the lifting rod is provided with a second fixing rod, the second fixing rod is connected to the outer periphery of the lifting rod and extends along the radial direction of the lifting rod, and the second end is connected to the lifting rod through the second fixing rod.

[0014] According to some embodiments of the present application, the detection mechanism includes an induction sheet and a detection sensor, one of the induction sheet and the detection sensor is disposed on the outer periphery of the lifting rod, and the other is installed on the base. The induction sheet is movably in contact with the detection sensor, and the detection sensor is used to send an alarm signal when separated from the induction sheet.

[0015] According to some embodiments of the present application, the induction sheet and the detection sensor are arranged in sequence along the radial direction of the lifting rod and are in contact connection.

[0016] According to some embodiments of the present application, the induction sheet extends along the length direction of the jacking rod, and the length of the induction sheet is greater than the detection area of the detection sensor.

[0017] According to some embodiments of the present application, the driving mechanism includes a turret, a jacking cam, and a cam follower. The jacking cam is installed on the turret, the cam follower is rotatably installed on the base and is in rolling connection with the cam track surface of the jacking cam. The turret is used to drive the jacking cam to rotate, so that the cam follower makes a lifting motion under the drive of the cam track surface.

[0018] According to some embodiments of the present application, the number of the base, the jacking rod, the elastic member, and the detection mechanism is multiple, and the number of the cam followers is multiple. The multiple cam followers, the multiple bases, the multiple jacking rods, the multiple elastic members, and the multiple detection mechanisms correspond one by one. The multiple cam followers are arranged at intervals and are respectively connected to the jacking cam.

[0019] According to the method for automatically inserting an electric core into a case according to the second aspect embodiment of the present application, the method for automatically inserting an electric core into a case is realized by using the device for automatically inserting an electric core into a case as described in the first aspect above. The method includes:

[0020] The driving mechanism drives the base to move towards the direction close to the steel case, and the elastic member drives the jacking rod to jack up the electric core;

[0021] When the resistance received by the electric core entering the steel case is greater than the preset resistance, the elastic member undergoes a tensile deformation, so that relative movement occurs between the base and the jacking rod;

[0022] The detection mechanism sends out an alarm signal, and the driving mechanism receives the alarm signal and stops working.

[0023] The method for automatically inserting an electric core into a case according to the embodiment of the present application has at least the following beneficial effects: it can monitor the resistance of the electric core when entering the case and ensure the safe assembly of the electric core and the steel case.

[0024] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present application in conjunction with the drawings and embodiments, where:

[0026] Figure 1 is a schematic structural diagram of the device for automatically inserting an electric core into a case disclosed in the embodiment of the present application;

[0027] Figure 2 is Figure 1 the enlarged view of part A in

[0028] Figure 3 Schematic assembly diagram of the jacking rod, base and elastic member disclosed in the embodiments of the present application;

[0029] Figure 4 is Figure 3 an enlarged view of part B in

[0030] Figure 5 Flowchart of the method for automatically inserting the battery cell into the shell disclosed in the embodiments of the present application.

[0031] Reference numerals:

[0032] 1. Automatic battery cell insertion device; 11. Base; 12. Jacking rod; 13. Driving mechanism; 131. Turret; 132. Jacking cam; 133. Cam follower; 14. Elastic member; 15. Detection mechanism; 151. Inductive sheet; 152. Detection sensor; 16. First fixing rod; 17. Second fixing rod. Detailed description of the embodiments

[0033] The following describes in detail the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0034] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0035] In the description of the present application, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding" etc. do not include the present number, and understandings such as "above", "below", "within" etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present application, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the description of the present application, if there are descriptions with reference terms such as "as an implementation manner", "an embodiment", "some examples", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc., it means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The technical solution of the present application will be further described in conjunction with embodiments and the accompanying drawings. It should be noted that the following description is only an exemplary illustration and not a specific limitation of the present application.

[0039] Please refer to Figures 1 to 4 , in a first aspect, an automatic core shelling device 1 provided by an embodiment of the present application includes a base 11, a lifting rod 12, a driving mechanism 13, an elastic member 14, and a detection mechanism 15. The lifting rod 12 is movably disposed through the base 11. The lifting rod 12 is used to lift the core. The driving mechanism 13 is used to drive the base 11 to move in a direction close to the steel shell. One end of the elastic member 14 is connected to the base 11, and the other end of the elastic member 14 is connected to the lifting rod 12. The elastic member 14 is used to drive the lifting rod 12 to move in a direction close to the steel shell under the drive of the base 11. When the resistance received by the core entering the steel shell is greater than a preset resistance, the elastic member 14 undergoes a tensile deformation, and relative movement occurs between the base 11 and the lifting rod 12. The detection mechanism 15 is used to send an alarm signal when detecting the relative movement between the base 11 and the lifting rod 12. The driving mechanism 13 receives the alarm signal and stops working.

[0040] By arranging the elastic member 14 to connect the base 11 and the lifting rod 12, when the driving mechanism 13 drives the base 11 to move towards the steel shell, the lifting rod 12 can move together with the base 11 under the drive of the elastic member 14. At this time, the tensile force received by the lifting rod 12 is greater than or equal to the sum of the gravity of the lifting rod 12 and the battery cell. When the battery cell lifted by the lifting rod 12 enters the steel shell without obstruction, the battery cell enters the steel shell under the drive of the lifting rod 12, completing the insertion of the battery cell into the shell. When the battery cell lifted by the lifting rod 12 encounters an obstruction when entering the steel shell, the lifting rod 12 receives a resistance force pointing away from the steel shell direction, and the upward movement of the lifting rod 12 is blocked. When the resistance force received by the battery cell when entering the steel shell is greater than the preset resistance force (that is, the tensile force of the base 11 on the lifting rod 12 minus the sum of the gravity of the lifting rod 12 and the battery cell), the resistance force received by the lifting rod 12 is greater than the tensile force. At this time, the base 11 moves towards the steel shell relative to the lifting rod 12 under the action of the driving mechanism 13, while the lifting rod 12 remains stationary, so that relative movement occurs between the base 11 and the lifting rod 12. At the same time, the elastic member 14 undergoes tensile deformation under the drive of the base 11, so that the battery cell entering the steel shell is buffered. When the detection mechanism 15 detects the relative movement between the base 11 and the lifting rod 12, an alarm signal is sent, and the driving mechanism 13 receives the alarm signal and stops working, so that the battery cell stops entering the shell, thereby ensuring the safety of the battery cell and the steel shell during the assembly process, avoiding the situation of damage to the battery cell or the steel shell caused by forced pushing when the battery cell enters the shell is blocked, which is beneficial to saving maintenance time and ensuring the working efficiency of the equipment.

[0041] It should be noted that when the elastic member 14 undergoes tensile deformation under the drive of the base 11, an elastic restoring force is generated simultaneously. When the elastic restoring force received by the lifting rod 12 is greater than the resistance force received by the lifting rod 12, the lifting rod 12 will move towards the steel shell together with the base 11 under the action of the elastic restoring force to drive the battery cell to be forced into the steel shell.

[0042] In some embodiments, considering that when the elastic member 14 uses a general tensile spring, the larger the size of the tensile spring undergoes tensile deformation, the greater the elastic restoring force generated by the tensile spring, and the lifting rod 12 is likely to drive the battery cell to be forced into the steel shell under the drive of the tensile spring, resulting in damage to the battery cell and the steel shell. Since the constant force spring has the characteristic of a constant spring coefficient, the constant spring can provide a relatively constant force within a certain deformation range. Based on this, the elastic member 14 is a constant force spring. Thus, the constant spring can ensure the balance between the elastic restoring force and the resistance force within a certain deformation range, so that the lifting rod 12 remains stationary (that is, relative movement occurs between the base 11 and the lifting rod 12), which is beneficial to avoiding the situation of the battery cell being forced into the steel shell.

[0043] It can be understood that in some other embodiments, the elastic member 14 can also be a tensile spring or an elastic cord, etc.

[0044] Optionally, the base 11 is provided with a first fixing rod 16. The first fixing rod 16 extends from one end connected to the base 11 towards the direction of the steel shell. The first end of the elastic member 14 is connected to the base 11 through the first fixing rod 16. The second end of the elastic member 14 passes through the base 11 and is connected to the end of the jacking rod 12 far from the steel shell. The first end and the second end are respectively located on both sides of the base 11.

[0045] In this way, while ensuring that the base 11 can drive the jacking rod 12 to move, the space between the base 11 and the steel shell can be reasonably utilized, and the space between the base 11 and the bottom of the jacking rod 12 can be reduced, which is beneficial to improving the structural compactness.

[0046] Optionally, the jacking rod 12 is provided with a second fixing rod 17. The second fixing rod 17 is connected to the outer periphery of the jacking rod 12 and extends along the radial direction of the jacking rod 12. The second end is connected to the jacking rod 12 through the second fixing rod 17.

[0047] Adding the second fixing rod 17 makes the second end of the elastic member 14 closer to the first end along the radial direction of the jacking rod 12, which is beneficial to enabling the elastic member 14 to be linearly stretched along the axial direction of the jacking rod 12, thereby being beneficial to ensuring that the elastic member 14 can smoothly deform to generate an elastic restoring force balanced with the resistance, and being beneficial to improving the reliability of the automatic cell casing device 1.

[0048] Optionally, the first fixing rod 16 includes a first connecting portion and a second connecting portion. The first connecting portion is connected to the base 11 and extends along the axial direction of the jacking rod 12. The second connecting portion is connected to the end of the first connecting portion far from the base 11 and extends towards the direction close to the jacking rod 12. The elastic member 14 is connected to the second connecting portion.

[0049] In this way, the second connecting portion extends from the base 11 towards the jacking rod 12, and the second fixing rod 17 is connected to the outer periphery of the jacking rod 12 and extends along the radial direction of the jacking rod 12, which is beneficial to making the axial projections of the second connecting portion and the second fixing rod 17 along the jacking rod 12 have an overlapping part, so that the two ends of the elastic member 14 are located on the same straight line along the axial direction of the jacking rod 12, enabling the elastic member 14 to be linearly stretched along the axis direction of the jacking rod 12 to ensure that the constant force spring can smoothly deform and recover deformation.

[0050] In some embodiments, the detection mechanism 15 includes an induction sheet 151 and a detection sensor 152. One of the induction sheet 151 and the detection sensor 152 is arranged on the outer periphery of the jacking rod 12, and the other is installed on the base 11. The induction sheet 151 is movably in contact with the detection sensor 152. The detection sensor 152 is used to emit an alarm signal when separated from the induction sheet 151.

[0051] In this way, the induction sheet 151 and the detection sensor 152 achieve the detection of the relative position between the lifting rod 12 and the base 11 through contact induction, which can improve the reliability of the detection signal, facilitate the real-time monitoring of the relative movement between the lifting rod 12 and the base 11, and send an alarm signal in time when it is detected that the base 11 moves relative to the lifting rod 12 (that is, the resistance received by the battery cell entering the shell is greater than the preset resistance), thus facilitating the ensuring of the assembly safety of the battery cell and the steel shell.

[0052] It can be understood that in some other embodiments, the detection mechanism 15 can also determine whether relative movement occurs between the base 11 and the lifting rod 12 by means of Hall sensors, photoelectric sensors, visual detection or ultrasonic detection.

[0053] Optionally, the induction sheet 151 is arranged on the outer periphery of the lifting rod 12, and the detection sensor 152 is installed on the base 11, which can help reduce the weight of the components on the lifting rod 12, so as to reduce the gravity that the base 11 needs to overcome when driving the lifting rod 12 to lift, and is beneficial to the lifting movement of the lifting rod 12.

[0054] Optionally, the induction sheet 151 and the detection sensor 152 are arranged in sequence along the radial direction of the lifting rod 12 and are in contact connection.

[0055] Thus, it can not only meet the contact induction between the detection sensor 152 and the induction sheet 151, but also ensure that the detection sensor 152 and the induction sheet 151 can move relative to each other along the axial direction of the lifting rod 12. When the driving mechanism 13 drives the base 11 to drive the detection sensor 152 to move up and down, the induction sheet 151 will not hinder the movement of the detection sensor 152, so that relative movement can occur between the base 11 and the lifting rod 12, ensuring the reliability of the battery cell automatic shelling device 1.

[0056] Optionally, considering that the battery cell and the steel shell will generate a very small shelling resistance within a certain error range, at this time, the elastic member 14 can generate a very small deformation to overcome this shelling resistance, and then the lifting rod 12 can complete the pushing of the battery cell into the shell. However, during the deformation process of the elastic member 14, the base 11 moves relative to the lifting rod 12. If the contact area between the detection sensor 152 and the induction sheet 151 is very small, a very small displacement of the base 11 driving the detection sensor 152 can cause the detection sensor 152 to separate from the induction sheet 151 and alarm to stop the machine, so that the battery cell and the steel shell cannot continue to complete the automatic shelling even if they can meet the shelling error. Or, when the battery cell automatic shelling device 1 has a structural jam, the base 11 and the lifting rod 12 move relative to each other, resulting in the detection mechanism 15 misjudging that the battery cell shelling is blocked. Based on this, the induction sheet 151 extends along the length direction of the lifting rod 12, and the length of the induction sheet 151 is greater than the detection area of the detection sensor 152.

[0057] In this way, the contact area between the detection sensor 152 and the induction piece 151 can be increased, so that the base 11 will emit an alarm signal only when the distance of the relative movement between the base 11 and the jacking rod 12 is large enough, which is beneficial to reducing the risk of misjudgment of the detection mechanism 15 and improving the reliability of the automatic cell casing device 1.

[0058] In some embodiments, the detection mechanism 15 further includes an alarm. The alarm is used to receive the alarm signal and trigger an action. The alarm is a buzzer and / or an alarm light. That is to say, the alarm is a buzzer, or the alarm is an alarm light, or the alarm is a buzzer and an alarm.

[0059] Adding the alarm can start the buzzer and light the alarm light when the detection sensor 152 emits an alarm signal, so as to remind the operator to timely discover the cell casing failure, which is beneficial to improving the efficiency of the automatic cell casing.

[0060] In some embodiments, the driving mechanism 13 includes a turret 131, a jacking cam 132 and a cam follower 133. The jacking cam 132 is installed on the turret 131. The cam follower 133 is rotatably installed on the base 11 and is in rolling connection with the cam track surface of the jacking cam 132. The turret 131 is used to drive the jacking cam 132 to rotate, so that the cam follower 133 makes a lifting motion under the drive of the cam track surface.

[0061] In this way, the lifting of the base 11 is driven by the movement of the cam follower 133 on the cam track surface, which is beneficial to making the movement of the jacking rod 12 driving the cell to lift and the jacking rod 12 to reset more stable and reliable, and improving the movement stability of the automatic cell casing device 1.

[0062] Optionally, the cam follower 133 can be a bearing. The outer ring of the bearing is in rolling connection with the cam track surface, and the inner ring of the bearing is fixedly connected to the base 11, so that it can not only meet the lifting movement of the cam follower 133 with the rotation of the cam track surface, but also ensure that the cam follower does not rotate with the turret 131, so that the cell at the top of the jacking rod 12 remains stationary relative to the steel shell along the circumference of the turret 131, facilitating the cell to be cased.

[0063] It can be understood that in some other embodiments, the driving mechanism 13 can also be a linear motor or a cylinder, etc.

[0064] In some embodiments, the number of the base 11, the jacking rod 12, the elastic member 14 and the detection mechanism 15 is multiple, and the number of the cam followers 133 is multiple. The multiple cam followers 133, the multiple bases 11, the multiple jacking rods 12, the multiple elastic members 14 and the multiple detection mechanisms 15 correspond one by one. The multiple cam followers 133 are arranged at intervals and are respectively connected to the jacking cam 132.

[0065] In this way, a turret 131 can drive multiple lifting rods 12 to move, so as to simultaneously realize the operation of inserting multiple battery cells into the shell, which can not only save energy and reduce energy consumption, but also improve work efficiency.

[0066] Please combine Figure 5 with Figures 1 to 4 Second, the embodiment of the present application provides a method for automatically inserting a battery cell into a shell, which uses the battery cell automatic insertion device 1 described in the first aspect above to realize the insertion of the battery cell into the shell. The method for automatically inserting a battery cell into a shell includes:

[0067] S100. The driving mechanism 13 drives the base 11 to move in the direction close to the steel shell, and the elastic member 14 drives the lifting rod 12 to lift the battery cell.

[0068] S200. When the resistance received by the battery cell entering the steel shell is greater than the preset resistance, the elastic member 14 undergoes tensile deformation, so that relative movement occurs between the base 11 and the lifting rod 12.

[0069] S300. The detection mechanism 15 issues an alarm signal, and the driving mechanism 13 receives the alarm signal and stops working.

[0070] It should be noted that when the resistance received by the battery cell entering the steel shell is less than the preset resistance, the elastic member 14 will maintain its current length and drive the lifting rod 12 to lift under the drive of the base 11 to push the battery cell into the steel shell to complete the insertion of the battery cell into the shell.

[0071] It can be understood that since the method for automatically inserting a battery cell into a shell uses the battery cell automatic insertion device 1 described in the first aspect above to realize the insertion of the battery cell into the shell, therefore, the method for automatically inserting a battery cell into a shell has the beneficial effects of the battery cell automatic insertion device 1 described in the first aspect above, which will not be elaborated here.

[0072] The above has described the embodiments of the present application in detail with reference to the drawings, but the present application is not limited to the above embodiments. Various changes can be made without departing from the purpose of the present application within the knowledge scope of those of ordinary skill in the art. In addition, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Claims

1. An automatic cell casing device, characterized in that, Comprising: A base; A jacking rod, which is movably inserted through the base and is used for jacking up the battery cell; A driving mechanism, which is used for driving the base to move towards the direction close to the steel shell; An elastic member, one end of the elastic member is connected to the base, the other end of the elastic member is connected to the jacking rod, the elastic member is used for driving the jacking rod to move towards the direction close to the steel shell under the drive of the base, and when the resistance received by the battery cell entering the steel shell is greater than a preset resistance, the elastic member undergoes a tensile deformation, and relative movement occurs between the base and the jacking rod; A detection mechanism, which is used for sending out an alarm signal when detecting relative movement between the base and the jacking rod, and the driving mechanism receives the alarm signal and stops working.

2. The automatic cell casing device according to claim 1, characterized in that, The elastic member is a constant force spring.

3. The automatic cell casing device according to claim 1, characterized in that, The base is provided with a first fixing rod, the first fixing rod extends from the end connected to the base towards the direction of the steel shell, the first end of the elastic member is connected to the base through the first fixing rod, the second end of the elastic member passes through the base and is connected to the end of the jacking rod far from the steel shell, and the first end and the second end are respectively located on both sides of the base.

4. The automatic cell casing device according to claim 3, characterized in that, The jacking rod is provided with a second fixing rod, the second fixing rod is connected to the outer periphery of the jacking rod and extends along the radial direction of the jacking rod, and the second end is connected to the jacking rod through the second fixing rod.

5. The automatic cell casing device according to claim 1, characterized in that, The detection mechanism includes an induction sheet and a detection sensor, one of the induction sheet and the detection sensor is arranged on the outer periphery of the jacking rod, the other is installed on the base, the induction sheet is movably in contact with the detection sensor, and the detection sensor is used for sending out an alarm signal when separated from the induction sheet.

6. The automatic cell casing device according to claim 5, characterized in that, The induction sheet and the detection sensor are arranged in sequence along the radial direction of the jacking rod and are in contact connection.

7. The automatic cell casing device according to claim 5, characterized in that, The induction sheet extends along the length direction of the jacking rod, and the length of the induction sheet is greater than the detection area of the detection sensor.

8. The automatic cell casing device according to any one of claims 1-7, characterized in that, The driving mechanism includes a turret, a jacking cam and a cam follower, the jacking cam is installed on the turret, the cam follower is rotatably installed on the base and is in rolling connection with the cam track surface of the jacking cam, and the turret is used for driving the jacking cam to rotate so that the cam follower makes a lifting motion under the drive of the cam track surface.

9. The automatic cell casing device according to claim 8, characterized in that, The number of the base, the jacking rod, the elastic member and the detection mechanism is multiple, the number of the cam followers is multiple, the multiple cam followers, the multiple bases, the multiple jacking rods, the multiple elastic members and the multiple detection mechanisms correspond one by one, the multiple cam followers are arranged at intervals and are respectively connected to the jacking cam.

10. An automatic cell casing method, characterized in that, Using the battery cell automatic shelling device according to any one of claims 1-9 to realize shelling of the battery cell, the method includes: The driving mechanism drives the base to move towards the direction close to the steel shell, and the elastic member drives the jacking rod to jack up the battery cell; When the resistance received by the battery cell entering the steel shell is greater than the preset resistance, the elastic member undergoes a tensile deformation so that relative movement occurs between the base and the jacking rod; The detection mechanism emits an alarm signal, and the driving mechanism receives the alarm signal and stops working.

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