Hydraulic pressure-regulating restraining tray

Abstract

The utility model discloses a hydraulic pressure regulation restraining tray which comprises a tray body and a layer plate mechanism, two guiding pieces which are arranged side by side in a left-right mode are arranged in the tray body, the two ends of each guiding piece are arranged on the front inner wall and the rear inner wall of the tray body respectively, and the layer plate mechanism comprises a plurality of layer plate assemblies. The multiple layer plate assemblies are sequentially arranged in the tray body at intervals from front to back, a restraining space is formed between every two adjacent layer plate assemblies, and two check blocks which are arranged side by side in the left-right direction are arranged in front of the multiple layer plate assemblies, behind the multiple layer plate assemblies and between every two adjacent layer plate assemblies correspondingly. The two check blocks are fixedly arranged on the peripheries of the two guiding pieces in a sleeving mode correspondingly. The shelf board assembly comprises a first shelf board and a second shelf board which are in butt joint with each other, and the second shelf board is located behind the first shelf board. The lithium battery formation device can ensure stable formation operation and improve the performance of a lithium battery.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a hydraulic pressure-regulating restraint tray. Background Art

[0002] During the production process of lithium batteries, it is usually necessary to charge and discharge the lithium batteries for the first time to activate them. This process is called lithium battery formation.

[0003] The restraint tray of the existing formation equipment generally includes a tray body, a layer plate mechanism and a driving mechanism. Two guide members arranged side by side on the left and right are provided in the tray body. The layer plate mechanism includes a plurality of layer plate assemblies arranged in sequence from front to back between the front plate and the rear plate. A restraint space is formed between two adjacent layer plate assemblies. The layer plate assembly includes a layer plate. The two ends of the layer plate are respectively slidably mounted on the outer periphery of the two guide members. The layer plate can move forward and backward along the two guide members. The layers of the two adjacent layer plate assemblies are linked to each other. The driving mechanism is used to drive the layer plate of the first layer plate assembly to move forward and backward. In actual application, the lithium batteries are first placed one by one in the restraint space of the two adjacent layer plate assemblies, and then the first layer plate assembly is driven to move backward, thereby driving each lithium battery and the remaining layer plate assemblies to move backward in sequence. In this way, the lithium batteries can be squeezed by the layers of the two adjacent layer plate assemblies, thereby achieving restraint and pressurization of the lithium batteries.

[0004] In the above structure, during the process of restraining and pressurizing the lithium batteries, the layer plates and the lithium batteries are moving, and it is impossible to ensure that the distance between two adjacent lithium batteries remains unchanged, and thus it is impossible to ensure the stable progress of the formation operation. In addition, since the lithium batteries will generate heat and expand during the charging and discharging process, the pressure on the lithium batteries will continue to increase, and usually the pressure on the lithium batteries will exceed the predetermined value. The above-mentioned restraint tray cannot adjust the pressure of the lithium batteries, so that the pressure of the lithium batteries cannot be kept constant, resulting in uneven charging and discharging of the lithium batteries, and reduced performance of the lithium batteries. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a hydraulic pressure-regulating restraint tray, which can ensure the stable progress of the formation operation and the uniform charging and discharging of the lithium battery, thereby improving the performance of the lithium battery.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The two levers have the first pivot point and the second pivot points, respectively, formed on a pair of camshafts, each of which is connected to a pair of locks, and the limit stops are set at 31° C. and 32° C. The two levers have the first pivot point and the second pivot points are connected at 31° C. to the limit stops, each of which is connected at 31° C. to the limit stops, each of which is connected at 31° C. The two ends of the first plate and the two ends of the second plate are respectively slidably mounted on the outer circumference of the two guide members, and the two ends of the first plate and the two ends of the second plate are respectively moved forward and backward along the two guide members, and the two ends of the first plate and the two stops located in the front of the first plate are respectively connected by two first elastic members, and the two first elastic members are respectively mounted on the outer circumference of the two guides, and the two ends of the second plate and the two stops located behind the second plate are respectively connected by two second elastic members, and the two second elastic members are respectively mounted on the outer circumference of the two guides.

[0008] The beneficial effects of the present invention are as follows: the plate assembly of the present invention includes a first plate and a second plate that are butted against each other, and by introducing liquid into the ring of the first plate, the first plate and the second plate can be moved away from each other, so that the lithium batteries in the restraint space between the two plate assemblies can be restrained and pressurized by the second plate of the preceding plate assembly and the first plate of the succeeding plate assembly, thereby ensuring that the spacing between two adjacent lithium batteries is constant and ensuring the stable progress of the formation operation. Moreover, when the pressure of the lithium batteries increases continuously due to heat expansion during the formation process, a portion of the liquid in the ring is released, so that the first plate and the second plate can be moved closer to each other, thereby reducing the squeezing force of the second plate of the preceding plate assembly and the first plate of the succeeding plate assembly on the lithium batteries in the corresponding restraint space, thereby adjusting the pressure of the lithium batteries and ensuring the constant pressure of the lithium batteries during the formation process, thereby ensuring uniform charging and discharging of the lithium batteries and improving the performance of the lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0010] Figure 1 This is a structural diagram of a hydraulic pressure-regulating restraint tray provided by one embodiment of the present utility model;

[0011] Figure 2 yes Figure 1 The structure diagram of the hydraulic pressure-regulating restraint pallet shown is a schematic diagram of the structure of the pallet with the left cover plate of the pallet body removed;

[0012] Figure 3 yes Figure 1 The schematic diagram of the structure of the hydraulic pressure-regulating restraint tray shown is shown after removing the multiple layer plate components located on the left;

[0013] Figure 4 yes Figure 1 The structural diagram of the layer mechanism of the hydraulic pressure-regulated restraint tray is shown;

[0014] Figure 5 yes Figure 1 A schematic structural diagram of a first angle of view of a layer assembly of a layer mechanism of a hydraulically pressure-regulated restraint pallet;

[0015] Figure 6 yes Figure 5 A schematic structural diagram of the second angle of the layer assembly shown;

[0016] Figure 7 yes Figure 5 The schematic diagram of the laminate assembly shown is cut away from the center;

[0017] Figure 8 yes Figure 5The structure diagram of the layer plate assembly after being cut through one of the limiting structures;

[0018] Figure 9 yes Figure 5 A schematic structural diagram of a first angle of view of a first layer of the layer assembly shown;

[0019] Figure 10 yes Figure 5 A schematic structural diagram of a first layer of the layer assembly at a second angle;

[0020] Figure 11 yes Figure 5 A schematic structural diagram of a second layer plate of the layer plate assembly at a first angle;

[0021] Figure 12 yes Figure 5 A schematic structural diagram of a second angle of view of the second layer of the layer assembly shown;

[0022] Figure 13 yes Figure 5 An exploded schematic diagram of the limiting structure of the laminate assembly is shown. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technical personnel in this field without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0024] Please refer to Figures 1 to 3 An embodiment of the present invention provides a hydraulic pressure regulating restraint pallet, comprising a pallet body 10 and a layer plate mechanism 20. The structure of the pallet body 10 is the existing one, consisting of a bottom plate, a front plate, a rear plate, a left sealing plate and a right sealing plate.

[0025] Two guide members 11 are provided in the tray body 10 (see Figure 4 ), the two guide members 11 are arranged side by side on the left and right, and the two ends of the guide member 11 are respectively arranged on the front inner wall and the rear end inner wall of the tray body 10.

[0026] Combine Figures 4 to 12As shown, the layer mechanism 20 includes a plurality of layer assemblies 21, a pressure sensor 23, a front liquid tank 24 and a rear liquid tank 25. The number of the layer assemblies 21 can be set according to actual conditions.

[0027] Multiple layer plate assemblies 21 are sequentially spaced from front to back within the tray body 10, with a restraint space 22 for placing the lithium battery 100 formed between two adjacent layer plate assemblies 21. Two stoppers 12 are respectively provided in front of the multiple layer plate assemblies 21, behind the multiple layer plate assemblies 21, and between two adjacent layer plate assemblies 21, and are arranged side by side. The two stoppers 12 are respectively fixedly sleeved on the outer periphery of the two guide members 11, wherein the two stoppers 12 located in front of the multiple layer plate assemblies 21 are respectively in contact with the front end inner wall of the tray body 10, and the two stoppers 12 located behind the multiple layer plate assemblies 21 are respectively in contact with the rear end inner wall of the tray body 10.

[0028] The layer plate assembly 21 includes a first layer plate 211 and a second layer plate 212 that are butted against each other. The second layer plate 212 is located behind the first layer plate 211. A first cavity 2111 is provided on the side of the first layer plate 211 near the second layer plate 212. A ring 2112 is provided at the bottom of the first cavity 2111. The ring 2112 partially protrudes from the side of the first layer plate 211 near the second layer plate 212. A protrusion 2121 is provided on the side of the second layer plate 212 near the first layer plate 211. The protrusion 2121 mates with the first cavity 2111. A second cavity 2122 is provided on the end of the protrusion 2121 away from the second layer plate 212. The second cavity 2122 extends to the side of the second layer plate 212 near the first layer plate 211. The ring 2112 and the second cavity 2122 mate with each other. The two ends of the first layer 211 and the two ends of the second layer 212 are respectively slidably mounted on the outer peripheries of the two guide members 11. The first layer 211 and the second layer 212 can respectively move forward and backward along the two guide members 11. The two ends of the first layer 211 and the two stops 12 located in front of the first layer 211 are respectively connected by two first elastic members 13, and the two first elastic members 13 are respectively mounted on the outer peripheries of the two guide members 11. The two ends of the second layer 212 and the two stops 12 located behind the second layer 212 are respectively connected by two second elastic members 14, and the two second elastic members 14 are respectively mounted on the outer peripheries of the two guide members 11. In this embodiment, the cross-sectional shape of the first cavity 2111 is circular, and the cross-sectional shapes of the ring 2112, the protrusion 2121, and the second cavity 2122 are all adapted to the cross-sectional shape of the first cavity 2111. It can be understood that the cross-sectional shapes of the first concave cavity 2111 , the ring 2112 , the protrusion 2121 , and the second concave cavity 2122 can be set according to actual conditions.

[0029] In this embodiment, the guide member 11 includes two guide rods 11a spaced apart from each other. The ends of the guide rods 11a are respectively disposed on the front and rear inner walls of the tray body 10. The stopper 12 is fixedly mounted on the outer circumferences of the two guide rods 11a. The first elastic member 13 includes two first springs 13a, each mounted on the outer circumferences of the corresponding two guide rods 11a of the guide member 11. The second elastic member 14 includes two second springs 14a, each mounted on the outer circumferences of the corresponding two guide rods 11a of the guide member 11.

[0030] At both ends of the first layer plate 211, two first through holes 211a are respectively provided at each end, and each end of the first layer plate 211 is slidably mounted on the outer periphery of the two guide rods 11a of the corresponding guide member 11 through its respective two first through holes 211a. At both ends of the second layer plate 212, two second through holes 212a are respectively provided at each end, and each end of the second layer plate 212 is slidably mounted on the outer periphery of the two guide rods 11a of the corresponding guide member 11 through its respective two second through holes 212a.

[0031] Two first position-limiting members 2113 are provided on the side of the first layer 211 away from the second layer 212, and two second position-limiting members 2123 are provided on the side of the second layer 212 away from the first layer 211. The two second position-limiting members 2123 correspond to the two first position-limiting members 2113. The top and bottom ends of the first position-limiting members 2113 are flush with the top and bottom ends of the first layer 211, respectively. The top and bottom ends of the second position-limiting members 2123 are flush with the top and bottom ends of the second layer 212, respectively. When placing the lithium battery 100 in the restraint space 22, the lithium battery 100 can be placed between the two second limiting members 2123 of the second layer plate 212 of the previous layer plate assembly 21 and between the two first limiting members 2113 of the first layer plate 211 of the subsequent layer plate assembly 21. In this way, the lithium battery 100 can be limited by the two second limiting members 2123 of the previous layer plate assembly 21 and the two first limiting members 2113 of the subsequent layer plate assembly 21 to prevent the lithium battery 100 from shifting.

[0032] The front liquid tank 24 and the rear liquid tank 25 are used to hold liquids, such as transformer oil. The front liquid tank 24 is arranged on the front inner wall of the tray body 10, and the rear liquid tank 25 is arranged on the rear inner wall of the tray body 10. A plurality of layer plate assemblies 21 are located between the front liquid tank 24 and the rear liquid tank 25. The pressure sensor 23 is arranged between the rear liquid tank 25 and the second layer plate 212 of the last layer plate assembly 21 and is fixed to the rear liquid tank 25. The pressure sensor 23 is used to detect the pressure of the lithium battery 100. An air inlet connector 241, an air outlet 243 and a liquid outlet connector 242 are provided on the front liquid tank 24 and the rear liquid tank 25. The air inlet connector 241 is used to connect to the inflation device, and the air outlet 243 is provided with an overflow valve. The bottom end of the second layer plate 212 is provided with a liquid inlet connector 2124 which is connected to the interior of the ring member 2112. The liquid inlet connector 2124 is connected to a liquid inlet pipe. The liquid inlet pipes of the second layer plates 212 of a part of the layer plate assemblies 21 are connected to the liquid outlet connector 242 of the front liquid tank 24 through the first manifold. The liquid inlet pipes of the second layer plates 212 of the remaining layer plate assemblies 21 are connected to the liquid outlet connector 242 of the rear liquid tank 25 through the second manifold.

[0033] In this embodiment, a liquid inlet channel 2125 is provided on the inner wall and the bottom of the second cavity 2122 , and the liquid inlet channel 2125 is communicated with the liquid inlet connector 2124 and the interior of the ring member 2112 respectively.

[0034] Two support members 15 are provided within the tray body 10 below the shelf mechanism 20. These two support members 15 are arranged side by side, with their ends respectively located on the front and rear inner walls of the tray body 10. Support platforms 151 are provided at the tops of the two support members 15, corresponding to each restraint space 22. The support platforms 151 are partially located within the corresponding restraint space 22. The support platforms 151 are used to support the lithium batteries 100. The number of support members 15 can be adjusted based on actual needs.

[0035] In actual application, in the initial state, there is a gap between the first plate 211 of the first plate assembly 21 and the front liquid tank 24, and there is a gap between the second plate 212 of the last plate assembly 21 and the pressure sensor 23. A predetermined amount of liquid is first filled into the front liquid tank 24 and the rear liquid tank 25, and then the lithium batteries 100 are placed one by one into the restraint spaces 22 of two adjacent plate assemblies 21. The lithium batteries 100 are then placed on the top of the corresponding support platform 151, between the two second limiting members 2123 of the previous plate assembly 21, and the two first limiting members 2113 of the next plate assembly 21. The corresponding lithium battery 100 can be supported by the support platform 151, and can be limited by the two second limiting members 2123 of the previous plate assembly 21 and the two first limiting members 2113 of the next plate assembly 21.

[0036] Then, compressed air is introduced into the front liquid tank 24 and the rear liquid tank 25 through the air inlet joint 241 of the front liquid tank 24 and the air inlet joint 241 of the rear liquid tank 25 through the inflation device, so that the pressure in the front liquid tank 24 and the pressure in the rear liquid tank 25 increase. At this time, the pressure in the front liquid tank 24 and the pressure in the rear liquid tank 25 are greater than the pressure in the ring part 2112 of the layer assembly 21, so that the liquid in the front liquid tank 24 and the liquid in the rear liquid tank 25 can respectively enter the ring part 2112 of the corresponding layer assembly 21 through their respective liquid outlet joints 242, the corresponding liquid inlet pipe of the layer assembly 21, the corresponding liquid inlet joint 2124 of the layer assembly 21, and the corresponding liquid inlet channel 2125 of the layer assembly 21, so that The pressure in the ring 2112 of the layer plate assembly 21 increases, which will squeeze the first layer 211 and the second layer 212 of the layer plate assembly 21, so that the first layer 211 and the second layer 212 move away from each other, that is, move back to back. In this way, the lithium battery 100 in the restraint space 22 between the two layer plate assemblies 21 can be restrained and pressurized through the second layer 212 of the previous layer plate assembly 21 and the first layer 211 of the next layer plate assembly 21. In this way, the lithium battery 100 is restrained and pressurized. Since the first layer 211 and the second layer 212 move, and the lithium battery 100 is stationary, the distance between the two adjacent lithium batteries 100 is unchanged, thereby ensuring the stable progress of the formation operation. In the process of the first layer plate 211 and the second layer plate 212 moving away from each other, the two guide members 11 can provide support for the movement of the first layer plate 211 and the second layer plate 212, and the two ends of the first layer plate 211 will respectively squeeze the two first elastic members 13, and the two ends of the second layer plate 212 will respectively squeeze the two second elastic members 14, so that the first elastic member 13 and the second elastic member 14 are compressed. At the same time, the first layer plate 211 of the first layer plate assembly 21 will squeeze the front liquid tank 24, and the second layer plate 212 of the last layer plate assembly 21 will squeeze the pressure sensor 23. The squeezing force is the compressive pressure of the lithium battery 100. In this way, the compressive pressure of the lithium battery 100 can be detected by the pressure sensor 23. By introducing compressed air of different pressures into the front liquid tank 24 and the rear liquid tank 25, different pressures can be generated in the ring member 2112 of the layer plate assembly 21, thereby being adaptable to different types of lithium batteries 100 and having a wide range of applications. After the restraint and pressurization are completed, the lithium battery 100 can be subjected to a formation process.Since the lithium battery 100 will heat up and expand during the formation process, the pressure on the lithium battery 100 will continue to increase. When the pressure of the lithium battery 100 detected by the pressure sensor 23 exceeds a predetermined value, the overflow valve of the front liquid tank 24 and the overflow valve of the rear liquid tank 25 are opened to discharge a part of the compressed air in the front liquid tank 24 and a part of the compression in the rear liquid tank 25, so that the pressure in the front liquid tank 24 and the pressure in the rear liquid tank 25 will decrease. At this time, the pressure in the front liquid tank 24 and the pressure in the rear liquid tank 25 are less than the pressure in the ring 2112 of the layer assembly 21, so that a part of the liquid in the ring 2112 of the layer assembly 21 can pass through the liquid inlet channel 2125, the liquid inlet joint 2124, the liquid inlet pipe, and the corresponding liquid outlet joint of the liquid tank 24. 242 enters the corresponding liquid tank, so that the pressure in the ring 2112 of the layer plate assembly 21 is reduced. At this time, under the reset action of the first elastic member 13 and the second elastic member 14, the first layer 211 and the second layer 212 of the corresponding layer plate assembly 21 can be driven to approach each other, that is, move toward each other, so that the squeezing force of the lithium battery 100 in the corresponding restraint space 22 by the second layer 212 of the previous layer plate assembly 21 and the first layer 211 of the next layer plate assembly 21 can be reduced until the compressive pressure of the lithium battery 100 reaches a predetermined value. In this way, the compressive pressure of the lithium battery 100 can be adjusted to ensure that the compressive pressure of the lithium battery 100 is constant during the formation process, thereby ensuring uniform charging and discharging of the lithium battery 100 and improving the performance of the lithium battery 100. After the formation is completed, the overflow valve of the front liquid tank 24 and the overflow valve of the rear liquid tank 25 are opened to discharge all the compressed air in the front liquid tank 24 and the rear liquid tank 25. At this time, the liquid in the ring 212 of the layer plate assembly 21 will all flow back to the corresponding liquid tank, so that the pressure in the layer plate assembly 21 is the same as the initial pressure. Under the reset action of the first elastic member 13 and the second elastic member 14, the first layer 211 and the second layer 212 of the corresponding layer plate assembly 21 can be driven to move closer to each other to return to the initial position, so that the lithium battery 100 can be released from restraint.

[0037] like Figure 7 As shown, a sealing ring 214 is disposed between the inner wall of the second cavity 2122 and the outer wall of the ring 2112. The sealing ring 214 provides a seal, preventing the liquid within the second cavity 2122 from flowing outside the plate assembly 21 as the first and second plates 211, 212 move away from each other. In this embodiment, a mounting groove 21211 is disposed on the inner wall of the second cavity 2122. The sealing ring 214 is disposed within the mounting groove 21211 and abuts against the outer wall of the ring 2112.

[0038] A heating plate 213 is provided in the ring 2112, and the heating plate 213 is used to heat the lithium battery 100. During the formation process of the lithium battery 100, the heating plate 213 generates heat after being energized, and the heat can be directly transferred to the corresponding lithium battery 100 through the first layer 211 and the second layer 212 of the layer plate assembly 21, thereby heating the lithium battery 100 and improving the performance of the lithium battery 100. Since the heat is directly transferred to the lithium battery 100 through the layer plate assembly 21, compared with the existing method of heating the storage position of the formation equipment to heat the lithium battery 100, the speed of heat transfer will be faster, which can reduce the heating time and heat waste, thereby reducing energy consumption, reducing costs, and improving the formation efficiency of the lithium battery 100.

[0039] In the present embodiment, the bottom of the first concave cavity 2111 is provided with a mounting post 2131 on the inner side of the ring part 2112, and the heating plate 213 is arranged on an end of the mounting post 2131 away from the bottom of the first concave cavity 2111. The number of mounting posts 2131 can be provided according to actual conditions. The heating plate 213 is electrically connected to the control module of the formation equipment through a connecting line 2132. The connecting line 2132 passes through the through hole of the ring part 2112 and is sealed with the through hole of the ring part 2112. The heating plate 213 is energized by the control module. The heating plate 213 is a resistance heating plate, and the surface of the heating plate 213 can be surface treated, such as anti-corrosion treatment, etc., to prevent the heating plate 213 from being corroded by liquid.

[0040] like Figures 8 to 13As shown, the layer plate assembly 21 also includes a limiting structure, which includes a mounting sleeve 215 and a fastener 216. A first groove 211b and a second groove 211c are respectively provided on the side of the first layer plate 211 close to the second layer plate 212 and the side away from the second layer plate 212. The second groove 211c is connected to the first groove 211b, and the inner diameter of the second groove 211c is larger than the inner diameter of the first groove 211b. A third groove 212b and a fourth groove 212c are respectively provided on the side of the second layer plate 212 close to the first layer plate 211 and the side away from the first layer plate 211. The third groove 212b corresponds to the first groove 211b, and the fourth groove 212c is connected to the third groove 212b, and the inner diameter of the fourth groove 212c is larger than the inner diameter of the third groove 212b. The mounting sleeve 215 is accommodated in the third groove 212b and the fourth groove 212c. One end of the mounting sleeve 215 extends out from the third groove 212b and is inserted into the first groove 211b. An annular protrusion 2151 is formed on the outer periphery of the other end of the mounting sleeve 215. The outer diameter of the protrusion 2151 is larger than the inner diameter of the third groove 212b and is located in the fourth groove 212c. The protrusion 2151 is used to abut against the bottom of the fourth groove 212c. The fastener 215 is mounted within the mounting sleeve 215. A portion of the fastener 216 extends from one end of the mounting sleeve 215 and is received within the first and second grooves 211b, 211c. A gasket 2161 is provided around the outer periphery of the fastener 216. The outer diameter of the gasket 2161 is larger than the maximum outer diameter of the fastener 216. The gasket 2161 is positioned outside the mounting sleeve 215. The outer periphery of the gasket 2161 forms an interference fit with the inner wall of the first groove 211b, securing the fastener 216 and the first layer 211 relative to each other. The gasket 2161 abuts against one end of the mounting sleeve 215. The fastener 216 is, for example, a screw threadedly mounted within the mounting sleeve 215. Through this structure, in the process of the first layer plate 211 and the second layer plate 212 moving away from each other, the maximum distance between the first layer plate 211 and the second layer plate 212 can be limited. Specifically, when the first layer plate 211 and the second layer plate 212 move away from each other, the first layer plate 211 can drive the fastener 216 and the mounting sleeve 215 to move synchronously. When the protrusion 2151 of the mounting sleeve 215 abuts against the bottom of the fourth groove 212c, the distance between the first layer plate 211 and the second layer plate 212 is the largest, and the ring 2112 is not separated from the second concave cavity 2122, thereby ensuring that the liquid does not flow out to the outside of the layer plate assembly 21. In this embodiment, the maximum distance between the first layer plate 211 and the second layer plate 212 is preferably 5 mm.

[0041] The retaining structure also includes a first protective cover 217 and a second protective cover 218. The first protective cover 217 is positioned within the second groove 211c. The end of the first protective cover 217 closest to the first groove 211b is open, while the end away from the first groove 211b is closed. The first protective cover 217 is positioned around the outer periphery of the fastener 216, with a first gap defined between the fastener 216 and the inner wall of the first protective cover 217. The second protective cover 218 is positioned within the fourth groove 212c. The end of the second protective cover 218 closest to the third groove 212b is open, while the end away from the third groove 212b is closed. The second protective cover 218 is positioned around the outer periphery of the protrusion 2151 and the mounting sleeve 215, with a second gap defined between the inner walls of the second protective cover 218. The first and second protective covers 217 and 218 protect the fastener 216 and the mounting sleeve 215.

[0042] In this embodiment, there are four limiting structures, which are distributed around the first cavity 2111. The number of the first groove 211b, the second groove 211c, the third groove 212b, and the fourth groove 212c corresponds to the number of limiting structures. It can be understood that the number of limiting structures can be set according to actual conditions.

[0043] Furthermore, if Figure 2 and Figure 3 As shown, two brackets 16 are provided on the side away from each other of the two support members 15. The brackets 16 are located below the multiple layer plate assemblies 21. A plurality of cooling fans 30 are provided on the brackets 16. The multiple cooling fans 30 are arranged in sequence from front to back, and each cooling fan 30 corresponds to a support platform 151. The bottom end and the outer walls of the two sides of the tray body 10 are respectively provided with a plurality of heat dissipation holes 17, and the heat dissipation holes 17 are connected to the interior of the tray body 10. The number of heat dissipation holes 17 can be set according to actual conditions. The lithium battery 100 releases heat during the charging and discharging process. The heat released by the lithium battery 100 can be discharged to the external environment through the multiple heat dissipation holes 17 by the provided cooling fans 30.

[0044] In this embodiment, there are two layer plate mechanisms 20, which are arranged side by side on the left and right. The number of guide members 11 corresponds to the number of layer plate mechanisms 20, which is four. Therefore, the utility model can restrain and pressurize multiple lithium batteries 100 at a time, thereby improving production efficiency.

[0045] The layer plate assembly 21 of the present invention includes a first layer plate 211 and a second layer plate 212 butted against each other, and the protrusion 2121 of the second layer plate 212 cooperates with the first cavity 2111 of the first layer plate 211, and the ring 2112 of the first layer plate 211 cooperates with the second cavity 2122 of the second layer plate 212. By passing liquid into the ring 2112, the pressure in the ring 2112 of the layer plate assembly 21 can be increased, so that the first layer plate 211 and the second layer plate 212 of the layer plate assembly 21 can be squeezed to move the first layer plate 211 and the second layer plate 212 away from each other. In this way, the second layer plate 212 of the previous layer plate assembly 21 and the next layer plate assembly 21 can be moved away from each other. The first layer plate 211 of the component 21 can restrain and pressurize the lithium battery 100 in the restraint space 22 between the two layer plate assemblies 21. At this time, the two first elastic members 13 between the two ends of the first layer plate 211 and the two blocks 12 located in front of the first layer plate 211 are compressed, and the two second elastic members 14 between the two ends of the second layer plate 212 and the two blocks 12 located behind the second layer plate 212 are compressed. In this way, the lithium battery 100 is restrained and pressurized. Since the first layer plate 211 and the second layer plate 212 move, and the lithium battery 100 is stationary, the distance between the two adjacent lithium batteries 100 can be guaranteed to be unchanged, which can ensure the stable progress of the formation operation. When the pressure of the lithium battery 100 increases continuously due to heat expansion during the formation process, the pressure of the lithium battery 100 can be detected by the pressure sensor 23, and a portion of the liquid in the ring 2112 is released according to the detected pressure, so that the pressure in the ring 2112 of the layer plate assembly 21 can be reduced. At this time, under the reset action of the two first elastic members 13 between the two ends of the first layer plate 211 and the two stoppers 12 located in front of the first layer plate 211, the two ends of the second layer plate 212 and the two stoppers 12 located behind the second layer plate 212 are released. Under the reset action of the two second elastic members 14 between them, the first layer plate 211 and the second layer plate 212 of the corresponding layer plate assembly 21 can be driven closer to each other, so that the squeezing force of the lithium battery 100 in the corresponding restraint space 22 through the second layer plate 212 of the previous layer plate assembly 21 and the first layer plate 211 of the next layer plate assembly 21 can be reduced, so that the compressive pressure of the lithium battery 100 can be adjusted to ensure the constancy of the compressive pressure of the lithium battery 100 during the formation process, thereby ensuring uniform charging and discharging of the lithium battery 100 and improving the performance of the lithium battery 100.

[0046] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hydraulic pressure-regulated restraint pallet, comprising a pallet body and a layer plate mechanism, wherein two guide members are arranged side by side in the pallet body, and the ends of the guide members are respectively arranged on the front inner wall and the rear inner wall of the pallet body; the layer plate mechanism comprises a plurality of layer plate assemblies, which are sequentially arranged in the pallet body from front to back, and a restraint space is formed between two adjacent layer plate assemblies, characterized in that: Two stoppers are respectively provided in front of the plurality of layer plate assemblies, behind the plurality of layer plate assemblies, and between two adjacent layer plate assemblies, and are arranged side by side. The two stoppers are respectively fixedly sleeved on the outer peripheries of the two guide members. The two stoppers located in front of the plurality of layer plate assemblies are respectively in contact with the front inner wall of the pallet body, and the two stoppers located behind the plurality of layer plate assemblies are respectively in contact with the rear inner wall of the pallet body. The layer plate assembly includes a first layer plate and a second layer plate that are butted against each other, the second layer plate is located behind the first layer plate, a first concave cavity is provided on a side of the first layer plate close to the second layer plate, a ring is provided at the bottom of the first concave cavity, the ring portion protrudes from the side of the first layer plate close to the second layer plate, a protrusion is provided on the side of the second layer plate close to the first layer plate, the protrusion cooperates with the first concave cavity, an end of the protrusion away from the second layer plate is provided with a second concave cavity, the second concave cavity extends to the side of the second layer plate close to the first layer plate, the ring cooperates with the second concave cavity, both ends of the first layer plate and the second layer plate are respectively slidably mounted on the outer periphery of two guide members, the first layer plate and the second layer plate can respectively move forward and backward along the two guide members, the two ends of the first layer plate and the two stops located in front of the first layer plate are respectively connected by two first elastic members, the two first elastic members are respectively mounted on the outer periphery of the two guide members, the two ends of the second layer plate and the two stops located behind the second layer plate are respectively connected by two second elastic members, the two second elastic members are respectively mounted on the outer periphery of the two guide members.

2. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: The pressure sensor is arranged between the rear plate and the rear plate and is fixed on the rear plate. The front plate and the rear plate are connected with the pressure sensor to form a pressure relief valve. The pressure sensor is arranged between the rear plate and the rear plate and is fixed on the rear plate. The front plate and the rear plate are provided with an air inlet joint, an air outlet and a liquid outlet joint. The air inlet joint is used to connect with the inflation device, the air outlet is provided with an overflow valve, the bottom end of the second plate is provided with a liquid inlet joint connected to the interior of the ring, and the liquid inlet joint is connected to a liquid inlet pipe, wherein the liquid inlet pipes of the second plate of a part of the plate assemblies are connected to the liquid outlet joint of the front liquid tank, and the liquid inlet pipes of the second plate of the remaining plate assemblies are connected to the liquid outlet joint of the rear liquid tank.

3. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: A heating sheet is provided in the ring.

4. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: A sealing ring is provided between the inner wall of the second cavity and the outer wall of the ring.

5. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: The layer plate assembly also includes a limiting structure, which includes a mounting sleeve and a fastener. The first layer plate is provided with a first groove and a second groove on one side close to the second layer plate and on the side away from the second layer plate respectively. The second groove is connected to the first groove, and the inner diameter of the second groove is larger than the inner diameter of the first groove. The second layer plate is provided with a third groove and a fourth groove on one side close to the first layer plate and on the side away from the first layer plate respectively. The third groove corresponds to the first groove, the fourth groove is connected to the third groove, and the inner diameter of the fourth groove is larger than the inner diameter of the third groove. The mounting sleeve is accommodated in the In the third groove and the fourth groove, one end of the mounting sleeve extends from the third groove and is inserted into the first groove, and an annular convex portion is formed on the outer periphery of the other end of the mounting sleeve, the outer diameter of the convex portion is larger than the inner diameter of the third groove and is located in the fourth groove, and the convex portion is used to abut against the bottom of the fourth groove. The fastener is installed in the mounting sleeve, and the fastener portion extends from one end of the mounting sleeve and is accommodated in the first groove and the second groove. The outer peripheral fixing sleeve of the fastener is provided with a gasket, and the outer peripheral surface of the gasket is interference fit with the inner wall of the first groove.

6. The hydraulic pressure regulating restraint pallet according to claim 5, characterized in that: The limiting structure also includes a first protective cover and a second protective cover. The first protective cover is provided in the second groove, and the end of the first protective cover close to the first groove is open, and the end of the first protective cover away from the first groove is closed. The first protective cover is sleeved on the outer periphery of the fastener, and a first gap is formed between the fastener and the inner wall of the first protective cover. The second protective cover is provided in the fourth groove, and the end of the second protective cover close to the third groove is open, and the end of the second protective cover away from the third groove is closed. The second protective cover is sleeved on the outer periphery of the convex portion and the mounting sleeve, and a second gap is formed between the convex portion and the inner wall of the second protective cover.

7. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: At least two support members are provided inside the pallet body below the layer mechanism, and the two support members are arranged side by side on the left and right. The two ends of the support members are respectively arranged on the front inner wall and the rear inner wall of the pallet body. The top ends of the two support members are respectively provided with support platforms at the positions corresponding to each restraint space, and the support platform part is located in the corresponding restraint space.

8. The hydraulic pressure regulating restraint pallet according to claim 7, characterized in that: Two brackets are respectively provided on the side away from the two support members, and the brackets are located below the multiple layer board components. The brackets are provided with multiple cooling fans, and the multiple cooling fans are arranged in sequence from front to back, and each cooling fan corresponds to a support platform.

9. The hydraulic pressure regulating restraint pallet according to claim 8, characterized in that: A plurality of heat dissipation holes are respectively provided on the bottom end and the outer walls on both sides of the tray body, and the heat dissipation holes are communicated with the interior of the tray body.

10. The hydraulic pressure regulating restraint pallet according to claim 1, characterized in that: Two first position-limiting members are arranged side by side on the side of the first plate away from the second plate, and two second position-limiting members are arranged side by side on the side of the second plate away from the first plate. The two second position-limiting members correspond to the two first position-limiting members respectively.

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