Battery cell preheating process and device for lithium battery production and processing

Abstract

The invention discloses a battery cell preheating process and device for lithium battery production and processing, relates to the technical field of lithium battery cell preheating, and aims to solve the technical problems that manual feeding of cylindrical battery cells is tedious and low in efficiency, the preheating effect of a traditional preheating device is poor, and the quality and efficiency of battery cell preheating are affected. Comprising a base, a machine body shell arranged above the base, a transmission assembly and isolation plates, the transmission assembly penetrates through the machine body shell, and the isolation plates are located on the two sides of the transmission assembly. By designing the clamping assembly, the roller assembly and the discharging assembly, the device can automatically complete feeding and discharging work, the device can complete preheating work more quickly for a cylindrical battery cell, and compared with an existing preheating device, the preheating quality efficiency is ensured, and the preheating efficiency is improved. And the step that the machining efficiency is affected due to manual feeding can be avoided, and then the preheating efficiency of the device is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery cell preheating, and more specifically, to a cell preheating process and device for lithium battery production and processing. Background Art

[0002] Lithium batteries are a type of battery with lithium metal or lithium alloy as the positive / negative electrode material and using a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. The negative electrode materials actually used in lithium-ion batteries are basically carbon materials, such as artificial graphite, natural graphite, mesophase carbon microspheres, petroleum coke, carbon fiber, pyrolytic resin carbon, etc. A cell refers to a single electrochemical cell containing positive and negative electrodes and is generally not used directly. Cells are divided into three types: aluminum shell cells, soft pack cells, and cylindrical cells.

[0003] Currently, when performing the preheating process on cylindrical cells, there are positioning challenges caused by the smooth surface of the cylinder. Workers have to manually adjust the position of the cell and manually start the preheating device after ensuring its accurate positioning. This manual feeding method is not only cumbersome to operate but also greatly restricts the efficiency of cell processing. In addition, traditional preheating devices have obvious deficiencies in the preheating effect, especially in the rapid and uniform heating of the two key preheating areas at both ends of the cell. This uneven preheating not only leads to significant heat loss but also seriously affects the quality and production efficiency of the preheated cells. In view of this, we propose a cell preheating process and device for lithium battery production and processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a cell preheating process and device for lithium battery production and processing to solve the technical problems of cumbersome and inefficient manual feeding of cylindrical cells, and poor preheating effect of traditional preheating devices, which affects the quality and efficiency of cell preheating.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A cell preheating process and device for lithium battery production and processing, including a motor and a hot air blower, and further including, A body mechanism, including a base, a body shell arranged above the base, a transmission component, and a partition board. Among them, the transmission component passes through the body shell, and the partition board is located on both sides of the transmission component; and a preheating mechanism, including a roller component, two side plates arranged on both sides of the roller component, two connecting shafts connected to the two side plates, a hot air blower and a motor connected to one of the side plates, a clamping component, a air supply component, and a discharging component. Among them, the clamping component is connected to the roller component, the air supply component is located on one side of the roller component, and the discharging component is connected to the air supply component.

[0006] The present invention can automatically complete the feeding and discharging work. For cylindrical battery cells, the device can complete the preheating work more quickly. Compared with the existing preheating devices, it not only ensures the quality and efficiency of preheating, but also avoids the steps that affect the processing efficiency due to manual feeding, thus ensuring the preheating efficiency and preheating efficiency of the device.

[0007] Preferably, the upper part of the base is fixedly connected to the lower part of the body shell, the upper part of the body shell is lapped with the transmission component, and the upper part of the body shell is fixedly connected to two partition plates, and the two partition plates are respectively located on both sides of the transmission component.

[0008] Preferably, the roller assembly is connected to the two side plates through two connecting shafts respectively. One of the connecting shafts passes through the side plate and is in transmission connection with the motor. One side of the side plate is fixedly connected to the motor and the hot air blower. The hot air blower is communicated with the air supply assembly. The air supply assembly is clamped outside the roller assembly. A plurality of clamping assemblies are fixedly connected to the outside of the roller assembly. The air supply assembly is communicated with the discharging assembly; The air supply assembly is fixedly connected to the upper part of the inner wall of the body shell, and the two side plates are both fixedly connected to the lower part of the inner wall of the body shell. The roller assembly is located above the transmission component.

[0009] Preferably, the roller assembly includes an installation cylinder. A circulation groove is provided in the installation cylinder. A limiting chute is provided on one side of the installation cylinder. The limiting chute is annular. A plurality of first through holes are provided on the side of the installation cylinder where the limiting chute is provided. A plurality of second through holes are provided outside the installation cylinder. A plurality of exhaust grooves are provided on both sides of the installation cylinder. A partition cover is fixedly connected to one side of the installation cylinder. The partition cover is communicated with the exhaust groove. The partition cover is communicated with the circulation groove through a pipeline; Both sides of the installation cylinder are fixedly connected to the two connecting shafts respectively. The air supply assembly is clamped in the limiting chute. The air supply assembly is communicated with the installation cylinder through the first through holes and the exhaust grooves. The installation cylinder is communicated with a plurality of clamping assemblies through a plurality of second through holes.

[0010] Preferably, the clamping assembly includes a first telescopic cylinder. The top end of the first telescopic cylinder is fixedly connected to an installation table. A pin shaft is fixedly connected above the installation table. The installation table is hinged to a movable device and a clamping plate through the pin shaft respectively. Pushers are fixedly connected to the other sides of the movable device and the clamping plate. A pressure relief hole is provided outside the first telescopic cylinder; The first telescopic cylinder is communicated with the first through hole outside the installation cylinder. The pusher is communicated with the installation cylinder.

[0011] Preferably, the air supply assembly includes a sub-connecting pipe. The other ends of the sub-connecting pipe are respectively communicated with a sealing cover and a limiting cover; The branch pipe is connected to the discharging assembly through a tee. The sealing cover is clamped outside the installation cylinder. The limiting cover is clamped in the limiting chute. The other end of the branch pipe is connected to a hot air blower.

[0012] Preferably, the discharging assembly includes a conduit. One end of the conduit is connected to one of the second telescopic cylinders. There are two second telescopic cylinders, and the two second telescopic cylinders are connected through a connecting pipe. Fixed blocks are fixedly connected to the bottom ends of the two second telescopic cylinders. A baffle plate is fixedly connected to the opposite sides of the two fixed blocks. A discharging block is fixedly connected to the rear of the baffle plate. A second arc-shaped groove is formed in the front of the baffle plate. A first arc-shaped groove is formed in the rear of the discharging block. The top end of the second telescopic cylinder is fixedly connected to the upper part of the inner wall of the machine body shell. The other end of the conduit is connected to the branch pipe. The discharging block is arranged between the two first telescopic cylinders in the middle.

[0013] Preferably, the activator includes a limiting plate. A first rotating shaft is fixedly connected above the limiting plate. Two first bearings are sleeved outside the first rotating shaft. Movable plates are clamped outside the two first bearings. The movable plates are arc-shaped. A torsion spring is fixedly connected to the first rotating shaft. The other end of the torsion spring is fixedly connected to the movable plate. The limiting plate is fixedly connected to the pusher. The bottom end of the limiting plate is fixedly connected to a pin shaft.

[0014] Preferably, the pusher includes a third telescopic cylinder. The top end of the third telescopic cylinder is fixedly connected to a second rotating shaft. Two second bearings are sleeved outside the second rotating shaft, and the two second bearings are respectively clamped with two positioning blocks. The positioning blocks are fixedly connected to the limiting plate. The third telescopic cylinder is connected to the installation cylinder. The third telescopic cylinder is designed obliquely.

[0015] A core preheating device for lithium battery production and processing includes the following steps: S1. Place the core to be processed in the machine body mechanism. S2. Start the preheating mechanism to clamp and heat the core. S3. After the preheating is completed, the preheating mechanism will automatically release the core, and the machine body mechanism will convey and discharge the core.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention designs a clamping assembly, a roller assembly and a discharge assembly, places the battery cell above the transmission assembly, transports the battery cell through the transmission assembly, starts the hot air blower and the motor, and the hot air blower injects gas into the air supply assembly and the discharge assembly, so that the discharge assembly extends downward to block the battery cell, and the clamping assembly automatically clamps and feeds the battery cell blocked above the transmission assembly. As the roller assembly rotates and drives the clamping assembly to clamp and fix the battery cell, the hot air discharged by the hot air blower will be blown to the two ends of the battery cell through the roller assembly and the air supply assembly, and part of the hot air will also be blown along The clamping assembly is discharged to preheat the battery cell. After the treatment is completed, the hot air blower and the motor are operated in reverse, the clamping assembly loosens the clamping of the battery cell, and the unloading assembly shrinks and moves upward to assist the battery cell to separate from the clamping assembly and complete the unloading, so that the device can automatically complete the loading and unloading work. For cylindrical battery cells, the device can complete the preheating work more quickly. Compared with the existing preheating device, it not only ensures the quality and efficiency of the preheating, but also avoids the step of affecting the processing efficiency due to manual loading, thereby ensuring the preheating efficiency and preheating efficiency of the device.

[0017] 2. The present invention also designs a roller assembly, an air supply assembly and a clamping assembly. The hot air blower injects gas into the second telescopic cylinder, so that the baffle plate moves down to the top of the transmission assembly to block the battery cell. When the battery cell contacts the movable plate, the movable plate is squeezed to flip along the first rotating shaft, and as it flips to the extreme state, the coil spring drives the movable plate to reset, and the battery cell enters between the limit plate and the clamping plate to complete the loading, so that the battery cell installation cylinder can stably squeeze the battery cell during its rotation, so that the battery cell enters between the clamping plate and the movable plate, and cooperates with the secondary push and fixation of the third telescopic cylinder, so that the device can clamp the battery cell more stably to avoid the battery cell falling off during the rotation of the installation cylinder, and the method of injecting gas from both ends further ensures the effect of the device on preheating the battery cell, thereby ensuring the preheating quality and efficiency of the device.

[0018] 3. The present invention also designs a unloading component and an air supply component to run the hot air blower and the motor in reverse. The motor drives the mounting cylinder to rotate in the opposite direction, and the hot air blower extracts the air in the second telescopic cylinder, causing it to contract and pull the baffle plate up at the same time. At this time, the unloading block will be between the two first telescopic cylinders in the middle. At the same time, the hot air blower extracts the gas in the third telescopic cylinder, causing the limit plate and the clamping plate to flip in the opposite direction and gradually loosen the clamping of the battery cell. As the mounting cylinder rotates, the limit plate and the clamped battery cell will squeeze the unloading block, and as the mounting cylinder runs, the battery cell will break away from the limit plate and the clamping plate and fall along the second arc groove to the other side of the transmission component, so that the device can automatically unload the battery cell after processing the battery cell. This reciprocating cycle can be used to preheat the subsequent battery cells, thereby improving the degree of automation of the device and avoiding damage caused by excessive preheating of the battery cell, thereby ensuring the processing quality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the machine body of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the machine body mechanism of the present invention; Figure 4 It is a structural schematic diagram of the drum assembly of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the drum assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the cross-sectional structure of the unloading component of the present invention.

[0020] Description of the numbers in the figure: 1. Machine body; 2. Preheating mechanism; 101. base; 102. housing; 103. transmission assembly; 104. isolation plate; 201, drum assembly; 202, side plate; 203, connecting shaft; 204, hot air blower; 205, motor; 206, clamping assembly; 207, air supply assembly; 208, unloading assembly; 2011, mounting cylinder; 2012, circulation slot; 2013, limiting slide slot; 2014, first through hole; 2015, second through hole; 2016, exhaust slot; 2017, isolation cover; 2061, first telescopic cylinder; 2062, mounting platform; 2063, pin shaft; 2064, mover; 2065, clamping plate; 2066, pusher; 2071, branch pipe; 2072, sealing cover; 2073, limit cover; 2081, guide tube; 2082, second telescopic cylinder; 2083, connecting pipe; 2084, fixing block; 2085, material blocking plate; 2086, unloading block; 2087, first arc groove; 2088, second arc groove; 20641, a limit plate; 20642, a first rotating shaft; 20643, a first bearing; 20644, a movable plate; 20645, a coil spring; 20661. third telescopic cylinder; 20662. second rotating shaft; 20663. second bearing; 20664. positioning block. DETAILED DESCRIPTION

[0021] like Figures 1 to 8 As shown, the present invention relates to a cell preheating process and device for lithium battery production and processing, including a motor 205 and a hot air blower 204, and also includes: The machine body mechanism 1 comprises a base 101, a machine body shell 102 arranged above the base 101, a transmission assembly 103 and an isolation plate 104, wherein the transmission assembly 103 passes through the machine body shell 102, and the isolation plates 104 are located on both sides of the transmission assembly 103; and the preheating mechanism 2 comprises a drum assembly 201, two side plates 202 arranged on both sides of the drum assembly 201, two connecting shafts 203 connected to the two side plates 202, a hot air blower 204 and a motor 205 connected to one side of the side plates 202, and a clamp The holding assembly 206, the air supply assembly 207 and the unloading assembly 208, wherein the holding assembly 206 is connected to the drum assembly 201, the air supply assembly 207 is located on one side of the drum assembly 201, and the unloading assembly 208 is connected to the air supply assembly 207. By designing the holding assembly 206, the drum assembly 201 and the unloading assembly 208, the battery core is placed above the transmission assembly 103, and the battery core is transported through the transmission assembly 103. When the hot air blower 204 and the motor 205 are started, the hot air blower 204 will inject gas into the air supply assembly 207. 07 and unloading assembly 208, so that the unloading assembly 208 extends downward to block the battery cell, and the clamping assembly 206 automatically clamps and loads the battery cell blocked above the transmission assembly 103. As the roller assembly 201 rotates and drives the clamping assembly 206 to clamp and fix the battery cell, the hot air discharged by the hot air blower 204 will pass through the roller assembly 201 and the air supply assembly 207 to blow to both ends of the battery cell, and part of the hot air will also be discharged along the clamping assembly 206, so as to preheat the battery cell. After the treatment is completed, the reverse By operating the hot air blower 204 and the motor 205, the clamping assembly 206 loosens its grip on the battery cell, and the unloading assembly 208 shrinks and moves upward, assisting the battery cell to detach from the clamping assembly 206 and completing the unloading, so that the device can automatically complete the loading and unloading work. For cylindrical battery cells, the device can complete the preheating work more quickly. Compared with the existing preheating device, it not only ensures the quality and efficiency of preheating, but also avoids the step of affecting the processing efficiency due to manual loading, thereby ensuring the preheating efficiency and preheating efficiency of the device.

[0022] In an embodiment of the present invention, the upper part of the base 101 is fixedly connected to the lower part of the body housing 102. The upper part of the body housing 102 is lapped with the transmission assembly 103. The upper part of the body housing 102 is fixedly connected to two partition plates 104, and the two partition plates 104 are respectively located on both sides of the transmission assembly 103. The drum assembly 201 is connected to the two side plates 202 through two connecting shafts 203 respectively. One of the connecting shafts 203 passes through the side plate 202 and is in transmission connection with the motor 205. One side of the side plate 202 is fixedly connected to the motor 205 and the hot air blower 204. The hot air blower 204 is communicated with the air supply assembly 207. The air supply assembly 207 is clamped outside the drum assembly 201. A plurality of clamping assemblies 206 are fixedly connected to the outside of the drum assembly 201. The air supply assembly 207 is communicated with the discharging assembly 208. The air supply assembly 207 is fixedly connected to the upper part of the inner wall of the body housing 102. The two side plates 202 are both fixedly connected to the lower part of the inner wall of the body housing 102. The drum assembly 201 is located above the transmission assembly 103. During feeding, the hot air blower 204 injects gas into the second telescopic cylinder 2082, so that the baffle plate 2085 moves down to block the battery cell above the transmission assembly 103. When the motor 205 operates, it drives the mounting cylinder 2011 and the first telescopic cylinder 2061 outside the mounting cylinder 2011 to rotate. When the battery cell contacts the movable plate 20644, the movable plate 20644 is squeezed to flip along the first rotating shaft 20642, and when it flips to the limit state, the torsion spring 20645 drives the movable plate 20644 to reset, and the battery cell enters between the limiting plate 20641 and the clamping plate 2065, completing the preliminary fixed feeding of the battery cell. With the continuous injection of hot air, part of the gas enters the third telescopic cylinder 20661, pushing the clamping plate 2065 and the limiting plate 20641 to flip towards each other, completing the secondary fixing of the battery cell. With the continuous rotation of the mounting cylinder 2011, the feeding is completed. Since the hot air blower 204 continuously injects gas into the sealing cover 2072 and the limiting cover 2073, part of the gas entering the mounting cylinder 2011 will be discharged again along the isolation cover 2017, and cooperate with the gas discharged from the other sealing cover 2072 to complete the heating of both ends of the battery cell. And the hot air entering the first telescopic cylinder 2061 is discharged through the pressure relief holes, thereby preheating the surface of the battery cell, so that the device can reduce the feeding difficulty by squeezing the movable plate 20644 during feeding, and cooperate with the clamping plate 2065 and the limiting plate 20641 both being made of elastic materials, so that the battery cell can be stably squeezed during the rotation of the mounting cylinder 2011 driving it, so that the battery cell enters between the clamping plate 2065 and the movable plate 20644, and cooperate with the secondary pushing and fixing of the third telescopic cylinder 20661, so that the device can clamp the battery cell more stably, avoiding the situation of the battery cell falling off during the rotation of the mounting cylinder 2011, and cooperating with the gas injection method from both ends further ensures the preheating effect of the device on the battery cell, guaranteeing the preheating quality and efficiency of the device.

[0023] In an embodiment of the present invention, the drum assembly 201 includes a mounting cylinder 2011. A flow-through groove 2012 is formed inside the mounting cylinder 2011. A limiting sliding groove 2013 is formed on one side of the mounting cylinder 2011. The limiting sliding groove 2013 is annular. A plurality of first through holes 2014 are formed on the side of the mounting cylinder 2011 where the limiting sliding groove 2013 is formed. A plurality of second through holes 2015 are formed outside the mounting cylinder 2011. A plurality of exhaust grooves 2016 are formed on both sides of the mounting cylinder 2011. A partition cover 2017 is fixedly connected to one side of the mounting cylinder 2011. The partition cover 2017 is in communication with the exhaust groove 2016. The partition cover 2017 is in communication with the flow-through groove 2012 through a pipeline. Both sides of the mounting cylinder 2011 are respectively fixedly connected to two connecting shafts 203. The air supply assembly 207 is clamped in the limiting sliding groove 2013. The air supply assembly 207 is in communication with the mounting cylinder 2011 through the first through holes 2014 and the exhaust grooves 2016. The mounting cylinder 2011 is in communication with a plurality of clamping assemblies 206 through a plurality of second through holes 2015. The clamping assembly 206 includes a first telescopic cylinder 2061. The top end of the first telescopic cylinder 2061 is fixedly connected to a mounting table 2062. A pin shaft 2063 is fixedly connected above the mounting table 2062. The mounting table 2062 is respectively hinged to a movable device 2064 and a clamping plate 2065 through the pin shaft 2063. Pushers 2066 are fixedly connected to the other sides of the movable device 2064 and the clamping plate 2065. A pressure relief hole is formed outside the first telescopic cylinder 2061. The first telescopic cylinder 2061 is in communication with the first through hole 2014 outside the mounting cylinder 2011. The pusher 2066 is in communication with the mounting cylinder 2011. By designing a first arc groove 2087 below the unloading block 2086, it can ensure that during the movement of the battery cell along with the transmission assembly 103, the baffle plate 2085 initially blocks it to prevent the battery cell from moving again. To avoid the situation of slipping due to being squeezed by the movable plate 20644, the first arc groove 2087 can secondly limit the position of the battery cell, increasing the contact surface between the battery cell and the baffle plate 2085 and the unloading block 2086, ensuring that the limiting plate 20641 and the clamping plate 2065 can stably clamp and fix the battery cell.

[0024] As another embodiment of the present invention, the air supply assembly 207 includes a branch pipe 2071. The other ends of the branch pipe 2071 are respectively connected to the sealing cover 2072 and the limiting cover 2073 in communication. The branch pipe 2071 is connected to the discharging assembly 208 through a tee. The sealing cover 2072 is snap-fitted outside the mounting cylinder 2011, and the limiting cover 2073 is snap-fitted in the limiting chute 2013. The other end of the branch pipe 2071 is connected to the hot air blower 204 in communication. The discharging assembly 208 includes a conduit 2081. One end of the conduit 2081 is connected to one of the second telescopic cylinders 2082 in communication. There are two second telescopic cylinders 2082, and the two second telescopic cylinders 2082 are connected in communication through a connecting pipe 2083. The bottom ends of the two second telescopic cylinders 2082 are fixedly connected with fixing blocks 2084. A baffle plate 2085 is fixedly connected to the opposite sides of the two fixing blocks 2084. A discharging block 2086 is fixedly connected to the rear of the baffle plate 2085. A second arc-shaped groove 2088 is formed in the front of the baffle plate 2085, and a first arc-shaped groove 2087 is formed in the rear of the discharging block 2086. The top ends of the second telescopic cylinders 2082 are fixedly connected to the upper part of the inner wall of the machine body shell 102. The other end of the conduit 2081 is connected to the branch pipe 2071 in communication. The discharging block 2086 is arranged between the two middle first telescopic cylinders 2061. Due to the provision of the limiting chute 2013 and the limiting cover 2073, and the shapes of the limiting chute 2013 and the limiting cover 2073 are both circular, when the mounting cylinder 2011 rotates, the limiting cover 2073 will remain stationary in the limiting chute 2013. At the same time, it can ensure that the limiting cover 2073 is always in communication with the mounting cylinder 2011, ensuring that the hot air blower 204 continuously injects gas into the mounting cylinder 2011, thereby ensuring the stability of the device during use.

[0025] As another embodiment of the present invention, the actuator 2064 includes a limit plate 20641. Above the limit plate 20641, a first rotating shaft 20642 is fixedly connected. Two first bearings 20643 are sleeved outside the first rotating shaft 20642. Actuator plates 20644 are clamped outside the two first bearings 20643. The actuator plates 20644 are arc-shaped. A torsion spring 20645 is fixedly connected outside the first rotating shaft 20642. The other end of the torsion spring 20645 is fixedly connected to the actuator plate 20644. The limit plate 20641 is fixedly connected to the pusher 2066. The bottom end of the limit plate 20641 is fixedly connected to the pin shaft 2063. The pusher 2066 includes a third telescopic cylinder 20661. The top end of the third telescopic cylinder 20661 is fixedly connected to a second rotating shaft 20662. Two second bearings 20663 are sleeved outside the second rotating shaft 20662. And the two second bearings 20663 are respectively clamped with two positioning blocks 20664. The positioning blocks 20664 are fixedly connected to the limit plate 20641. The third telescopic cylinder 20661 is communicated with the installation cylinder 2011. The third telescopic cylinder 20661 is designed to be inclined. By designing the unloading assembly 208 and the air supply assembly 207, the hot air blower 204 and the motor 205 are operated in reverse. The motor 205 drives the installation cylinder 2011 to rotate in reverse. The hot air blower 204 extracts the air in the second telescopic cylinder 2082, causing it to contract and pulling the baffle 2085 upward at the same time. At this time, the unloading block 2086 will be located between the middle two first telescopic cylinders 2061. At the same time, the hot air blower 204 extracts the gas in the third telescopic cylinder 20661, causing the limit plate 20641 and the clamping plate 2065 to reverse and gradually loosen the clamping of the battery cell. As the installation cylinder 2011 rotates, the limit plate 20641 and the clamped and fixed battery cell will squeeze the unloading block 2086. And as the installation cylinder 2011 operates, the battery cell will break away from the limit plate 20641 and the clamping plate 2065 and fall along the second arc-shaped groove 2088 to the other side of the transmission assembly 103, enabling the device to automatically unload the battery cell after processing the battery cell. In this way, it can repeatedly preheat and process subsequent battery cells, improving the automation degree of the device and avoiding the situation of damage due to over-preheating of the battery cell, thereby ensuring the processing quality of the device.

[0026] Working principle: This embodiment provides a battery cell preheating process and device for lithium battery production and processing. When in use, the battery cell to be processed is placed in the body mechanism 1, and then the preheating mechanism 2 is started to clamp and heat the battery cell. And after the preheating is completed, the preheating mechanism 2 will automatically release the battery cell. Subsequently, the body mechanism 1 will convey and discharge the battery cell. During processing, the battery cells are placed above the transmission component 103, and the battery cells are transported through the transmission component 103. The hot air blower 204 and the motor 205 are started, and the hot air blower 204 will inject gas into the air supply component 207 and the unloading component 208, so that the unloading component 208 extends downward to block the battery cells, and the clamping component 206 will automatically clamp and load the battery cells blocked above the transmission component 103. As the roller component 201 rotates and drives the clamping component 206 to clamp and fix the battery cells, the hot air discharged by the hot air blower 204 will pass through the roller component 201 and the air supply component 207 to blow to both ends of the battery cells, and part of the hot air will also be discharged along the clamping component 206, so as to preheat the battery cells. After the processing is completed, the hot air blower 204 and the motor 205 are reversed to run the clamping component 206 to loosen the clamping of the battery cells, and the unloading component 208 shrinks and moves upward to assist the battery cells to separate from the clamping component 206, and complete the unloading; During material loading, the hot air blower 204 injects gas into the second telescopic cylinder 2082, so that the blocking plate 2085 moves down to the top of the transmission assembly 103 to block the battery cell. When the motor 205 is running, it drives the installation cylinder 2011 and the first telescopic cylinder 2061 outside the installation cylinder 2011 to rotate. When the battery cell contacts the movable plate 20644, the movable plate 20644 is squeezed to flip along the first rotating shaft 20642, and when it flips to the limit state, the coil spring 20645 drives the movable plate 20644 to reset, and the battery cell enters between the limit plate 20641 and the clamping plate 2065, completing the preliminary fixing and loading of the battery cell. With the continuous injection of hot air, part of the gas enters the third telescopic cylinder 20661, pushing the clamping plate 2065 to and the limiting plate 20641 are turned toward each other to complete the secondary fixation of the battery cell. With the continuous rotation of the installation cylinder 2011, the loading is completed. Since the hot air blower 204 will continue to inject gas into the sealing cover 2072 and the limiting cover 2073, part of the gas entering the installation cylinder 2011 will be discharged again along the isolation cover 2017, and the gas discharged from the sealing cover 2072 on the other side is cooperated to complete the heating of the two ends of the battery cell, and the hot air entering the first telescopic cylinder 2061 is discharged along the pressure relief hole, thereby preheating the surface of the battery cell, so that the device can reduce the difficulty of loading by squeezing the movable plate 20644 when loading, and the clamping plate 2065 and the limiting plate 20641 are all made of elastic materials; During unloading, the hot air blower 204 and the motor 205 are operated in reverse, and the motor 205 drives the installation tube 2011 to rotate in the opposite direction. The hot air blower 204 extracts the air in the second telescopic tube 2082, causing it to contract and pull the baffle plate 2085 upward. At this time, the unloading block 2086 will be between the two middle first telescopic tubes 2061. At the same time, the hot air blower 204 extracts the gas in the third telescopic tube 20661, causing the limit plate 20641 and the clamping plate 2065 to flip in the opposite direction, gradually loosening the clamping of the battery cell. As the installation tube 2011 rotates, the limit plate 20641 and the clamped battery cell will squeeze the unloading block 2086, and as the installation tube 2011 runs, the battery cell will break away from the limit plate 20641 and the clamping plate 2065, and fall along the second arc groove 2088 to the other side of the transmission assembly 103.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A cell preheating device for lithium battery production and processing, comprising a motor (205) and a hot air blower (204), characterized in that: Also includes, A machine body mechanism (1), comprising a base (101), a machine body shell (102) arranged above the base (101), a transmission assembly (103) and an isolation plate (104), wherein the transmission assembly (103) passes through the machine body shell (102), and the isolation plate (104) is located on both sides of the transmission assembly (103); and, The preheating mechanism (2) comprises a drum assembly (201), two side plates (202) arranged on both sides of the drum assembly (201), two connecting shafts (203) connected to the two side plates (202), a hot air blower (204) and a motor (205) connected to one of the side plates (202), a clamping assembly (206), an air supply assembly (207) and a discharge assembly (208), wherein the clamping assembly (206) is connected to the drum assembly (201), the air supply assembly (207) is located on one side of the drum assembly (201), and the discharge assembly (208) is connected to the air supply assembly (207).

2. The cell preheating device for lithium battery production and processing according to claim 1, characterized in that: The upper part of the base (101) is fixedly connected to the lower part of the machine housing (102); the upper part of the machine housing (102) is overlapped with the transmission assembly (103); the upper part of the machine housing (102) is fixedly connected to two isolation plates (104); and the two isolation plates (104) are respectively located on both sides of the transmission assembly (103).

3. The cell preheating device for lithium battery production and processing according to claim 2, characterized in that: The drum assembly (201) is connected to the two side plates (202) respectively via two connecting shafts (203), one of the connecting shafts (203) passes through the side plate (202) and is transmission-connected to the motor (205), one side of the side plate (202) is fixedly connected to the motor (205) and the hot air blower (204), the hot air blower (204) is connected to an air supply assembly (207), the air supply assembly (207) is clamped on the outside of the drum assembly (201), the outside of the drum assembly (201) is fixedly connected to a plurality of clamping assemblies (206), and the air supply assembly (207) is connected to a discharge assembly (208); The air supply assembly (207) is fixedly connected to the upper part of the inner wall of the machine body shell (102), the two side panels (202) are fixedly connected to the lower part of the inner wall of the machine body shell (102), and the drum assembly (201) is located above the transmission assembly (103).

4. The cell preheating device for lithium battery production and processing according to claim 3, characterized in that: The drum assembly (201) comprises a mounting cylinder (2011), a circulation groove (2012) is provided in the mounting cylinder (2011), a limiting slide groove (2013) is provided on one side of the mounting cylinder (2011), the limiting slide groove (2013) is annular, a plurality of first through holes (2014) are provided on the side of the mounting cylinder (2011) where the limiting slide groove (2013) is provided, a plurality of second through holes (2015) are provided outside the mounting cylinder (2011), a plurality of exhaust grooves (2016) are provided on both sides of the mounting cylinder (2011), an isolation cover (2017) is fixedly connected to one side of the mounting cylinder (2011), the isolation cover (2017) is connected to the exhaust groove (2016), and the isolation cover (2017) is connected to the circulation groove (2012) via a pipeline; The two sides of the installation cylinder (2011) are respectively fixedly connected to the two connecting shafts (203); the air supply component (207) is clamped in the limiting sliding groove (2013); the air supply component (207) is connected to the installation cylinder (2011) through the first through hole (2014) and the exhaust groove (2016); and the installation cylinder (2011) is connected to the plurality of clamping components (206) through the plurality of second through holes (2015).

5. The cell preheating device for lithium battery production and processing according to claim 4, characterized in that: The clamping assembly (206) comprises a first telescopic cylinder (2061), the top end of the first telescopic cylinder (2061) is fixedly connected to a mounting platform (2062), the top of the mounting platform (2062) is fixedly connected to a pin shaft (2063), the mounting platform (2062) is hinged to a mover (2064) and a clamping plate (2065) respectively through the pin shaft (2063), the other side of the mover (2064) and the clamping plate (2065) are fixedly connected to a pusher (2066), and a pressure relief hole is provided on the outside of the first telescopic cylinder (2061); The first telescopic cylinder (2061) is in communication with a first through hole (2014) outside the mounting cylinder (2011), and the pusher (2066) is in communication with the mounting cylinder (2011).

6. The cell preheating device for lithium battery production and processing according to claim 5, characterized in that: The air supply assembly (207) comprises a branch pipe (2071), the other end of the branch pipe (2071) being respectively connected to the sealing cover (2072) and the limiting cover (2073); The branch pipe (2071) is connected to the discharge assembly (208) via a tee, the sealing cover (2072) is clamped on the outside of the installation cylinder (2011), the limiting cover (2073) is clamped in the limiting slide groove (2013), and the other end of the branch pipe (2071) is connected to the hot air blower (204).

7. The cell preheating device for lithium battery production and processing according to claim 6, characterized in that: The unloading assembly (208) comprises a conduit (2081), one end of the conduit (2081) is connected to one of the second telescopic cylinders (2082), there are two second telescopic cylinders (2082), and the two second telescopic cylinders (2082) are connected via a connecting pipe (2083), the bottom ends of the two second telescopic cylinders (2082) are fixedly connected to a fixing block (2084), the opposite sides of the two fixing blocks (2084) are fixedly connected to a baffle plate (2085), the rear of the baffle plate (2085) is fixedly connected to a unloading block (2086), the front of the baffle plate (2085) is provided with a second arc groove (2088), and the rear of the unloading block (2086) is provided with a first arc groove (2087); The top end of the second telescopic cylinder (2082) is fixedly connected to the upper part of the inner wall of the machine body shell (102); the other end of the conduit (2081) is connected to the branch pipe (2071); and the discharge block (2086) is arranged between the two first telescopic cylinders (2061) located in the middle.

8. The cell preheating device for lithium battery production and processing according to claim 7, characterized in that: The movable device (2064) comprises a limit plate (20641), a first rotating shaft (20642) is fixedly connected to the upper side of the limit plate (20641), two first bearings (20643) are connected to the outer side of the first rotating shaft (20642), and a movable plate (20644) is clamped to the outer side of the two first bearings (20643), and the movable plate (20644) is arc-shaped, and a coil spring (20645) is fixedly connected to the outer side of the first rotating shaft (20642), and the other end of the coil spring (20645) is fixedly connected to the movable plate (20644); The limiting plate (20641) is fixedly connected to the pusher (2066), and the bottom end of the limiting plate (20641) is fixedly connected to the pin shaft (2063).

9. The cell preheating device for lithium battery production and processing according to claim 8, characterized in that: The pusher (2066) comprises a third telescopic cylinder (20661), the top end of the third telescopic cylinder (20661) is fixedly connected to a second rotating shaft (20662), the outer shell of the second rotating shaft (20662) is connected to two second bearings (20663), and the two second bearings (20663) are respectively clamped to two positioning blocks (20664); The positioning block (20664) is fixedly connected to the limiting plate (20641), the third telescopic cylinder (20661) is connected to the mounting cylinder (2011), and the third telescopic cylinder (20661) adopts an inclined design.

10. A cell preheating process for lithium battery production and processing, using a cell preheating device for lithium battery production and processing according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. placing the battery cell to be processed in the machine body (1); S2, starting the preheating mechanism (2) to clamp and heat the battery cell; S3. After preheating is completed, the preheating mechanism (2) will automatically release the battery cell, and the body mechanism (1) will transport and discharge the battery cell.

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