Restraining tray and restraining device

Abstract

The utility model provides a restraining tray and a restraining device, the restraining tray comprises a restraining plate and a pressure piece, and the restraining plate is used for abutting against a battery; the pressure part is located on one side of the restraining plate in the thickness direction and comprises a telescopic rod and a pressure sensor, the telescopic rod is connected to the restraining plate, the telescopic rod can stretch out and draw back and can push the restraining plate to move, and the pressure sensor is arranged at the end, facing the restraining plate, of the telescopic rod and used for sensing pressure applied to the restraining plate by the telescopic rod.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a restraint tray and a restraint device. Background Art

[0002] A secondary battery (Rechargeable battery), also known as a rechargeable battery or storage battery, refers to a battery that can be recharged to activate the active material and continue to be used after the battery is discharged. Secondary batteries are widely used in electric vehicles, portable electronic devices, energy storage and other fields due to their advantages such as long cycle life, high specific energy, low self-discharge and high energy efficiency. During the formation production process of secondary batteries, restraint trays are usually used to fix the secondary batteries to prevent the secondary batteries from expanding and deforming due to excessive internal gas production. However, existing restraint trays are unable to monitor and adjust the restraining force of the secondary batteries, which reduces the product consistency of the secondary batteries. Utility Model Content

[0003] The present application provides a restraint tray and a restraint device, which can monitor and adjust the restraint force applied to the battery in real time, thereby helping to improve the product consistency of the battery.

[0004] In a first aspect, the present application provides a restraint tray for restraining batteries. The restraint tray includes a restraint plate and a pressure member. The restraint plate is configured to abut the battery. The pressure member is located on one side of the restraint plate in the thickness direction. The pressure member includes a telescopic rod and a pressure sensor. The telescopic rod is connected to the restraint plate and can be extended and retracted to push the restraint plate to move. The pressure sensor is located at one end of the telescopic rod facing the restraint plate and is configured to sense the pressure applied by the telescopic rod on the restraint plate.

[0005] In which, the restraint tray also includes an outer frame, the outer frame includes two first side panels, and the two first side panels are spaced apart and arranged opposite to each other; there are multiple restraint plates, and multiple restraint plates are located between the two first side panels and are spaced apart from the two first side panels, and multiple restraint plates include two first restraint plates, and the two first restraint plates are spaced apart and arranged opposite to each other; there are multiple pressure pieces, and multiple pressure pieces include at least two first pressure pieces, wherein at least one first pressure piece is provided between each first restraint plate and each first side panel.

[0006] The battery has a center line, which is parallel to the expansion direction of the battery; a plurality of first pressure members are provided between each first restraint plate and each first side plate, and the plurality of first pressure members are spaced around the center line.

[0007] Wherein, between each of the first restraining plates and each of the first side plates, a first pressure member is located on the center line.

[0008] In which, the telescopic rod of the first pressure piece includes a first cylinder and a first rod, one end of the first cylinder is connected to the first side plate, and the other end of the first cylinder is spaced apart from the first restraint plate, and the first cylinder is provided with a first through hole, and the first through hole passes through one side cylinder wall of the first cylinder along the thickness direction of the first cylinder, the first rod is connected between the first cylinder and the first restraint plate, and can move relative to the first cylinder along the length direction of the first cylinder, and push the first restraint plate to move relative to the first side plate; the pressure sensor of the first pressure piece is provided at one end of the first rod facing the first restraint plate; the first pressure piece also includes a first wire, one end of the first wire is passed through the first through hole, and is electrically connected to the pressure sensor, and the other end of the first wire is used to electrically connect to the controller of the restraint device.

[0009] In which, the restraint tray also includes a first limiter, which is located on the side of the first restraint plate away from the first pressure piece, and the first limiter includes a first limit surface facing the first restraint plate; the first restraint plate includes a second limit surface facing the first limiter, and the second limit surface is arranged opposite to the first limit surface.

[0010] The plurality of restraint plates further include a second restraint plate, which is located between the two first restraint plates and spaced apart from the two first restraint plates and can move relative to the first side plate, and is used to abut the battery.

[0011] Among them, there are multiple second restraint plates, and the multiple second restraint plates are all located between the two first restraint plates and are spaced apart from each other; the multiple pressure members also include a second pressure member, and the second pressure member is located between two adjacent second restraint plates. The telescopic rod of the second pressure member is connected between two adjacent second restraint plates and can push the two adjacent second restraint plates to move relative to the first side plate. The second pressure member has two pressure sensors, and each pressure sensor of the second pressure member is provided at one end of the telescopic rod of the second pressure member facing one of the second restraint plates. Each pressure sensor of the second pressure member is used to sense the pressure applied by the telescopic rod of the second pressure member to one of the second restraint plates.

[0012] The battery has a center line, which is parallel to the expansion direction of the battery; a plurality of second pressure members are provided between two adjacent second restraint plates, and the plurality of second pressure members are spaced around the center line.

[0013] Wherein, between two adjacent second restraint plates, one second pressure member is located on the center line.

[0014] In which, the telescopic rod of the second pressure piece includes a second cylinder and two second rods, the second cylinder is located between two adjacent second restraint plates, and is spaced apart from the two adjacent second restraint plates, the second cylinder is provided with a second through hole, and the second through hole passes through one side cylinder wall of the second cylinder along the thickness direction of the second cylinder, each second rod is connected between the second cylinder and a second restraint plate, and can move relative to the second cylinder along the length direction of the second cylinder, and push a second restraint plate to move relative to the first side plate; each pressure sensor of the second pressure piece is provided at one end of a second rod facing a second restraint plate; the second pressure piece also includes a second wire, one end of the second wire is passed through the second through hole, and is electrically connected to the pressure sensor of the second pressure piece, and the other end of the second wire is used to electrically connect to the controller of the restraint device.

[0015] In which, the restraint tray also includes a second limiter, which is located on the side of the second restraint plate away from the second pressure piece, and the second limiter includes a third limit surface facing the second restraint plate; the second restraint plate includes a fourth limit surface facing the second limiter, and the fourth limit surface is arranged opposite to the third limit surface.

[0016] In a second aspect, the present application also provides a restraint device, comprising a controller and a restraint tray as described in any one of the above items, wherein the controller is electrically connected to the pressure sensor, and the controller is used to receive the pressure signal sent by the pressure sensor and adjust the pressure applied by the telescopic rod to the restraint plate.

[0017] The restraint tray provided by this application has a pressure piece disposed on one side of the restraint plate in the thickness direction, and a pressure sensor disposed on the end of the pressure piece facing the restraint plate. When the restraint tray is used to restrain the battery, the pressure sensor can monitor the pressure of the restraint plate, thereby enabling real-time monitoring and adjustment of the restraint force on both sides of the battery in the direction of overall expansion, ensuring high consistency of the battery product and improving product quality. At the same time, by adjusting the pressure of the pressure piece on the restraint plate, the restraint force of the battery can be adjusted, which helps to improve the degree of automation of the battery formation process, thereby improving battery production efficiency, achieving efficient battery production, and further helping to save labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be described below.

[0019] Figure 1 It is a structural schematic diagram of a restraint device provided by this application;

[0020] Figure 2 yes Figure 1 A schematic structural diagram of the restraint tray in the restraint device shown in the first embodiment;

[0021] Figure 3 yes Figure 2 A schematic diagram of a portion of the structure of the restraint tray shown;

[0022] Figure 4 yes Figure 3 The structure diagram of the restraint tray after being cut along AA;

[0023] Figure 5 yes Figure 3 A schematic structural diagram of the first pressure member in the restraint tray shown;

[0024] Figure 6 yes Figure 2 The structural diagram of the restraint tray shown is used to restrain the battery;

[0025] Figure 7 yes Figure 1 A schematic structural diagram of the restraint tray in the restraint device shown in the second embodiment;

[0026] Figure 8 yes Figure 7 A schematic diagram of a portion of the structure of the restraint tray shown;

[0027] Figure 9 yes Figure 8 The structure diagram of the restraint tray after being cut open along BB;

[0028] Figure 10 yes Figure 8 A schematic structural diagram of the second pressure member in the restraint tray shown;

[0029] Figure 11 yes Figure 7 The structural diagram of the restraint tray restraining the battery is shown;

[0030] Figure 12 yes Figure 1 A schematic structural diagram of the restraint tray in the restraint device in the third embodiment;

[0031] Figure 13 yes Figure 12 A partial structural diagram of the restraint tray shown;

[0032] Figure 14 yes Figure 13 The structure diagram of the restraint tray after being cut along CC is shown;

[0033] Figure 15 yes Figure 12 The structural diagram of the restraint tray restraining the battery is shown;

[0034] Figure 16 yes Figure 1 A schematic structural diagram of the restraint tray in the restraint device in a fourth embodiment;

[0035] Figure 17 yes Figure 16 The diagram shows a partial structure of the restraint tray after it is cut along DD;

[0036] Figure 18 yes Figure 16 The structural diagram of the restraint tray restraining the battery is shown;

[0037] Figure 19 yes Figure 18 Schematic diagram of the partial structure of the restraint tray and battery after being cut along EE.

[0038] The names corresponding to the reference numerals in the figures are:

[0039] Restraint device 100a, battery 200, restraint tray 100, controller 101, outer frame 110, restraint plate 120, pressure piece 140, first restraint plate 120a, second restraint plate 120b, first pressure piece 140a, bottom plate 10, side frame 20, first side plate 21, second side plate 22, center line 200a, first accommodating chamber 150, second accommodating chamber 190, telescopic rod 30, pressure sensor 40, first cylinder 31, first rod 32, first through hole 311, second pressure piece 140b, second cylinder 51, second rod 52, second through hole 511, first limiter 170, first limiting surface 171, second limiting surface 121, second limiter 180, third limiting surface 181, fourth limiting surface 131. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0041] See also Figure 1 , Figure 1 It is a structural schematic diagram of a restraint device 100a provided in this application.

[0042] The restraint device 100a provided herein is used to restrain a battery 200 during its formation process to prevent expansion and deformation. The restraint device 100a includes a restraint tray 100 and a controller 101. The controller 101 is electrically connected to the restraint tray 100 to monitor and adjust the restraining force applied by the restraint tray 100 to the battery 200.

[0043] See also Figure 2 , Figure 2 yes Figure 1 The diagram shows the structure of the restraint tray 100 in the first embodiment of the restraint device. For ease of description, the length of the restraint tray 100 is defined as the X-axis, the width of the restraint tray 100 is defined as the Y-axis, and the height of the restraint tray 100 is defined as the Z-axis. The X-axis, Y-axis, and Z-axis directions are all perpendicular to each other.

[0044] In this embodiment, the restraint tray 100 includes an outer frame 110, a restraint plate 120, and a pressure piece 140. The restraint plate 120 and the pressure piece 140 are both installed in the outer frame 110. The outer frame 110 can be used to support the battery 200. The outer frame 110, the restraint plate 120, and the pressure piece 140 cooperate with each other to restrain the battery 200. In addition, the length direction of the outer frame 110 is parallel to the length direction of the restraint tray 100, the width direction of the outer frame 110 is parallel to the width direction of the restraint tray 100, and the height direction of the outer frame 110 is parallel to the height direction of the restraint tray 100.

[0045] Specifically, the outer frame 110 includes a base plate 10 and a side frame 20. The side frame 20 is fixedly connected to the base plate 10 and is disposed around the circumference of the base plate 10. The side frame 20 includes two first side panels 21 and two second side panels 22. Along the length direction of the outer frame 110 (the X-axis direction in the figure), the two first side panels 21 are spaced apart and disposed opposite each other. The two second side panels 22 are fixedly connected between the two first side panels 21. Along the width direction of the outer frame 110 (the Y-axis direction in the figure), the two second side panels 22 are spaced apart and disposed opposite each other.

[0046] The restraint plates 120 are all located between the two first side plates 21 and are spaced apart from the two first side plates 21. The restraint plates 120 are used to abut the battery 200. In this embodiment, there are multiple restraint plates 120, and the multiple restraint plates 120 are all located between the two first side plates 21 and are spaced apart from the two first side plates 21. Among them, the restraint plates 120 include two first restraint plates 120a and a second restraint plate 120b. Specifically, along the length direction of the restraint tray 100 (the X-axis direction in the figure), the two first restraint plates 120a are spaced apart. When the battery 200 is placed in the restraint tray 100, the two first restraint plates 120a are respectively located on opposite sides of the expansion direction of the battery 200. It should be noted that the expansion direction of the battery 200 refers to the direction when the two large expansion surfaces of the battery 200 move away from each other. In this embodiment, the expansion direction of the battery 200 is parallel to the length direction of the outer frame 110 of the restraint tray 100 (the X-axis direction in the figure). Furthermore, the battery 200 further has a center line 200 a , which is parallel to the expansion direction of the battery 200 .

[0047] In this embodiment, along the length direction of the restraint tray 100 (the X-axis direction in the figure), the second restraint plate 120b is located between the two first restraint plates 120a, and is spaced apart from the two first restraint plates 120a, and can move relative to the first side plate 21 of the outer frame 110. A first accommodating cavity 150 can be formed between the second restraint plate 120b and one of the first restraint plates 120a. In this embodiment, the restraint tray 100 has two first accommodating cavities 150. Each first accommodating cavity 150 is used to accommodate a battery 200.

[0048] In this embodiment, there may be multiple second restraint plates 120b. Along the length direction of the restraint tray 100, the multiple second restraint plates 120b are located between the two first restraint plates 120a and are spaced apart from each other. A second accommodating cavity 190 may be formed between two adjacent second restraint plates 120b. In this embodiment, the restraint tray 100 has multiple second accommodating cavities 190. Along the length direction of the restraint tray 100 (the X-axis direction shown in the figure), the multiple second accommodating cavities 190 are located between the two first accommodating cavities 150. Each second accommodating cavity 190 is used to accommodate a battery 200.

[0049] It can be understood that when batteries 200 are placed in both the first accommodating cavity 150 and the second accommodating cavity 190 of the restraint tray 100, each second restraint plate 120b can separate two adjacent batteries 200 to prevent the batteries 200 in the two adjacent first accommodating cavities 150 from direct contact, thereby ensuring the safety and reliability of multiple batteries 200 in the restraint tray 100.

[0050] Please refer to Figure 3 、 Figure 4 and Figure 5 , Figure 3 yes Figure 2 The partial structural diagram of the restraint tray 100 is shown. Figure 4 yes Figure 3 The structure diagram of the restraint tray 100 after being cut along AA is shown. Figure 5 yes Figure 3 The structure diagram of the first pressure member 140a in the restraint tray 100 is shown. Here, "cut along AA" means cutting along the plane where the AA line is located, and similar descriptions below can be understood in the same way.

[0051] The pressure member 140 is located on one side of the restraint plate 120 in the thickness direction. The pressure member 140 includes a telescopic rod 30 and a pressure sensor 40. The telescopic rod 30 is connected to the restraint plate 120. The telescopic rod 30 can be extended and retracted, and can push the restraint plate 120 to move. The pressure sensor 40 is provided at one end of the telescopic rod 30 facing the restraint plate 120, and is used to sense the pressure applied by the telescopic rod 30 to the restraint plate 120. The pressure sensor 40 is electrically connected to the controller 101 of the restraint device 100a, so that the controller 101 can receive the pressure signal sent by the pressure sensor 40, and adjust the pressure applied by the telescopic rod 30 to the restraint plate 120, thereby realizing the adjustment of the restraint force of the battery 200.

[0052] In this embodiment, there are multiple pressure members 140. The multiple pressure members 140 include at least two first pressure members 140a. Among them, at least one first pressure member 140a is provided between each first side plate 21 and each first restraint plate 120a. In this embodiment, multiple first pressure members 140a are provided between each first side plate 21 and each first restraint plate 120a, and the multiple first pressure members 140a are spaced around the center line 200a of the battery 200. Under this arrangement, the multiple first pressure members 140a between each first side plate 21 and each first restraint plate 120a can push a first restraint plate 120a to move relative to the first side plate 21, so that the two first restraint plates 120a can apply a restraining force to the edge position of the battery 200 on both sides of the expansion direction of the battery 200, thereby being able to restrain and squeeze the battery 200 in the restraint tray 100 in the overall expansion direction, ensuring that the overall product consistency of the battery 200 is high.

[0053] Please continue Figure 3 and Figure 5 In this embodiment, the telescopic rod 30 of each first pressure member 140a is connected between a first side plate 21 and a first restraint plate 120a. Exemplarily, the telescopic rod 30 is generally cylindrical, and the length direction of the telescopic rod 30 is parallel to the length direction of the restraint tray 100. The telescopic rod 30 can be extended and retracted, and can push a first restraint plate 120a to move relative to the first side plate 21, so as to apply pressure to the battery 200 placed in the first accommodating cavity 150, thereby restraining the battery 200.

[0054] Specifically, the telescopic rod 30 of each first pressure member 140a includes a first barrel portion 31 and a first rod portion 32. One end of the first barrel portion 31 is connected to a first side plate 21, and the other end of the first barrel portion 31 is spaced apart from a first restraining plate 120a. The first barrel portion 31 is provided with a first through hole 311, and the first through hole 311 passes through the barrel wall of one side of the first barrel portion 31 along the thickness direction of the first barrel portion 31 to connect the inside and outside of the first barrel portion 31. Under this arrangement, on the one hand, hydraulic oil can be transported through the first through hole 311 to change the pressure applied by the telescopic rod 30 to the first restraining plate 120a, thereby realizing the adjustment of the restraining force of the battery 200. On the other hand, the first through hole 311 can also be used to install a wire for transmitting a pressure signal, so that the first pressure member 140a can realize functions such as pressure signal transmission.

[0055] The first rod portion 32 is connected between the first cylinder portion 31 and the first restraining plate 120a, and can move relative to the first cylinder portion 31 along the length direction of the first cylinder portion 31, and push the first restraining plate 120a to move relative to the first side plate 21, so that the telescopic rod 30 can be extended and retracted.

[0056] It is understood that the telescopic movement of the telescopic rod 30 in the first pressure member 140a drives the first restraint plate 120a to move relative to the outer frame 110 along the length of the outer frame 110, thereby avoiding frequent removal of the first restraint plate 120a. On the one hand, this can avoid situations where the first restraint plate 120a cannot be removed due to expansion of the battery 200, thereby improving the production efficiency of the battery 200 and helping to reduce labor costs. At the same time, it can also prevent the frequent removal of the first restraint plate 120a from affecting the product consistency of the battery 200 during the production process, thereby ensuring the high product quality of the battery 200.

[0057] In each first pressure member 140a, the pressure sensor 40 is provided at one end of the telescopic rod 30 facing one of the first restraint plates 120a, and is used to sense the pressure applied by the telescopic rod 30 on the first restraint plate 120a. Specifically, the pressure sensor 40 of each first pressure member 140a is provided at one end of the first rod portion 32 facing the first restraint plate 120a. In addition, each first pressure member 140a also includes a first wire (not shown). One end of the first wire is passed through the first through hole 311 and is electrically connected to the pressure sensor 40, and the other end of the first wire is used to electrically connect to the controller 101 that controls the restraint tray 100, thereby electrically connecting the pressure sensor 40 to the controller 101.

[0058] Under this configuration, the pressure signal and other data, such as the pressure signal applied by the telescopic rod 30 to the first restraint plate 120a, sensed by the pressure sensor 40 of the first pressure member 140a, can be transmitted to the controller 101 via the first wire. After receiving the pressure signal and other data from the pressure sensor 40 of the first pressure member 140a, the controller 101 adjusts the pressure applied by the telescopic rod 30 of the first pressure member 140a to the first restraint plate 120a, thereby monitoring and adjusting the restraining force applied by the first restraint plate 120a to the battery 200. This also helps to improve the degree of automation in the production of the battery 200 and enhance the production efficiency of the battery 200.

[0059] See also Figure 6 , Figure 6 yes Figure 2 The structure diagram of the restraint tray 100 restraining the battery 200 is shown.

[0060] During the formation process of the battery 200, when the restraint tray 100 is used to restrain the battery 200, the telescopic rod 30 of each first pressure member 140a pushes a first restraint plate 120a along the length of the restraint tray 100 (the X-axis in the figure). During this process, the two first restraint plates 120a move toward each other under the action of the first pressure members 140a, restraining the battery 200 placed between them to prevent expansion and deformation of the battery 200.

[0061] In this embodiment, a first pressure piece 140a is provided between each first restraint plate 120a and each first side plate 21, and a pressure sensor 40 is provided at one end of the first pressure piece 140a facing the first restraint plate 120a. When the restraint tray 100 is used to restrain the battery 200, the pressure sensor 40 of the first pressure piece 140a can monitor the pressure of the first restraint plate 120a, thereby enabling real-time monitoring of the restraint force on both sides of the overall expansion direction of the battery 200, thereby helping to improve the restraint efficiency and save labor costs.

[0062] On this basis, by arranging a plurality of first pressure members 140a between each first restraint plate 120a and each first side plate 21, and making the plurality of first pressure members 140a spaced around the center line 200a of the battery 200, since the plurality of first pressure members 140a can work independently of each other, the plurality of first pressure members 140a can individually monitor and adjust the pressure at different positions on the edge of the first restraint plate 120a, thereby enabling the restraint force at different positions of the battery 200 to be individually monitored and adjusted, ensuring the consistency of the restraint force at different positions of the battery 200, thereby ensuring the high consistency of the battery 200 product and improving the quality of the product. In addition, by adjusting the pressure of the plurality of first pressure members 140a on different positions of the first restraint plate 120a, the restraint force at different positions of the battery 200 can be adjusted, which also helps to improve the degree of automation of the formation process production of the battery 200, thereby improving the production efficiency of the battery 200, achieving efficient production of the battery 200, and thus helping to save labor costs.

[0063] See also Figure 7 、 Figure 8 and Figure 9 , Figure 7 yes Figure 1 The structural diagram of the restraint tray 100 in the restraint device 100a in the second embodiment is shown. Figure 8 yes Figure 7 The partial structural diagram of the restraint tray 100 is shown. Figure 9 yes Figure 8 The structure diagram of the restraint tray 100 is shown after it is cut apart along line BB.

[0064] The restraint tray 100 shown in this embodiment is different from the restraint tray 100 shown in the first embodiment mentioned above in that the multiple pressure members 140 also include a second pressure member 140b. The second pressure member 140b is connected between two adjacent second restraint plates 120b. In other words, a second pressure member 140b is provided between two adjacent second restraint plates 120b. In this embodiment, a plurality of second pressure members 140b are provided between two adjacent second restraint plates 120b. Among them, the plurality of second pressure members 140b between two adjacent second restraint plates 120b are spaced around the center line 200a of the battery 200. Under this arrangement, each second restraint plate 120b can apply a restraining force to the edge position of each battery 200, thereby being able to achieve restraint and extrusion of each battery 200 in the restraint tray 100, ensuring that the product consistency of each battery 200 is high.

[0065] Please refer to Figure 8 and Figure 10 , Figure 10 yes Figure 8 Schematic diagram of the structure of the second pressure member 140b in the restraint tray 100.

[0066] In this embodiment, the telescopic rod 30 of each second pressure member 140b is located between two adjacent second restraint plates 120b. For example, the telescopic rod 30 of the second pressure member 140b is generally cylindrical, and the length of the telescopic rod 30 of the second pressure member 140b is parallel to the length of the restraint tray 100. The telescopic rod 30 of each second pressure member 140b can be extended and retracted, and can push the two adjacent second restraint plates 120b to move relative to the first side plate 21, thereby applying pressure to the batteries 200 placed in the first accommodating cavity 150 and / or the second accommodating cavity 190, thereby restraining the batteries 200.

[0067] Specifically, the telescopic rod 30 of the second pressure piece 140b includes a second barrel 51 and two second rods 52. The second barrel 51 is located between two adjacent second restraining plates 120b and is spaced apart from the two adjacent second restraining plates 120b. The second barrel 51 is provided with a second through hole 511, which passes through the barrel wall of one side of the second barrel 51 in the thickness direction of the second barrel 51 to connect the inside and outside of the second barrel 51. Under this arrangement, on the one hand, hydraulic oil can be transported through the second through hole 511 to change the pressure applied by the telescopic rod 30 of the second pressure piece 140b to the second restraining plate 120b, thereby realizing the adjustment of the restraining force of the battery 200. On the other hand, the second through hole 511 can also be used to install a wire for transmitting a pressure signal, so that the second pressure piece 140b can realize functions such as pressure signal transmission.

[0068] Each second rod portion 52 is connected between the second cylinder portion 51 and a second restraint plate 120b, and can move relative to the second cylinder portion 51 along the length direction of the second cylinder portion 51, and push a second restraint plate 120b to move relative to the first side plate 21, so that the telescopic rod 30 of the second pressure member 140b can be extended and retracted.

[0069] It is understood that by the telescopic movement of the telescopic rod 30 of the second pressure member 140b, the two adjacent second restraint plates 120b are driven to move relative to the outer frame 110 along the length direction of the outer frame 110, thereby avoiding the frequent removal of the second restraint plates 120b. On the one hand, this can avoid the situation where the second restraint plates 120b cannot be removed due to the expansion of the battery 200, thereby improving the production efficiency of the battery 200 and helping to reduce labor costs. At the same time, it can also prevent the frequent removal of the second restraint plates 120b from affecting the product consistency of the battery 200 during the production process, thereby ensuring the high product quality of the battery 200.

[0070] In this embodiment, there are two pressure sensors 40 of the second pressure member 140b. Each pressure sensor 40 of the second pressure member 140b is arranged at one end of the telescopic rod 30 of the second pressure member 140b facing a second restraint plate 120b, and is used to sense the pressure applied by the telescopic rod 30 of the second pressure member 140b to a second restraint plate 120b. Specifically, each pressure sensor 40 of the second pressure member 140b is arranged at one end of a second rod portion 52 facing a second restraint plate 120b. In addition, each second pressure member 140b also includes a second wire (not shown). One end of the second wire is passed through the second through hole 511 and is electrically connected to the pressure sensor 40 of the second pressure member 140b. The other end of the second wire is used to electrically connect to the controller 101 that controls the restraint tray 100, thereby electrically connecting the pressure sensor 40 of the second pressure member 140b to the controller 101.

[0071] Under this configuration, the pressure signal and other data, such as the pressure signal applied by the telescopic rod 30 of the second pressure member 140b to a second restraint plate 120b, sensed by each pressure sensor 40 of the second pressure member 140b, are transmitted to the controller 101 via a second wire. After receiving the pressure signal and other data from the pressure sensors 40 of the second pressure member 140b, the controller 101 adjusts the pressure applied by the telescopic rod 30 of the second pressure member 140b to a second restraint plate 120b, thereby monitoring and adjusting the restraining force applied by the second restraint plate 120b to the battery 200. This can also further improve the degree of automation in the production of the battery 200 and enhance the production efficiency of the battery 200.

[0072] See also Figure 11 , Figure 11 yes Figure 7The structure diagram of the restraint tray 100 restraining the battery 200 is shown.

[0073] During the formation process of the battery 200, when the battery 200 is restrained by the restraint tray 100, along the length direction of the restraint tray 100 (the X-axis direction in the figure), a second rod portion 52 of the telescopic rod 30 of each second pressure member 140b pushes a second restraint plate 120b to move. In other words, along the length direction of the restraint tray 100, the telescopic rod 30 of each second pressure member 140b can be telescoped to both sides to push two adjacent second restraint plates 120b to move. At the same time, along the length direction of the restraint tray 100 (the X-axis direction in the figure), the telescopic rod 30 of each first pressure member 140a pushes a first restraint plate 120a to move. In this process, the multiple second restraint plates 120b cooperate with the two first restraint plates 120a to achieve stable restraint of the battery 200 placed in the first accommodating cavity 150 and the second accommodating cavity 190, thereby preventing the battery 200 from expanding and deforming.

[0074] In this embodiment, a second pressure piece 140b is provided between two adjacent second restraint plates 120b, and a pressure sensor 40 is provided at both ends of the telescopic rod 30 of each second pressure piece 140b. When the restraint tray 100 is used to restrain the battery 200, each pressure sensor 40 of the second pressure piece 140b can monitor the pressure of a second restraint plate 120b, so that the restraint force on both sides of the expansion direction of each battery 200 can be monitored in real time, thereby helping to improve the restraint efficiency and save labor costs.

[0075] On this basis, by disposing multiple second pressure members 140b between two adjacent second restraint plates 120b, and by spacing the multiple second pressure members 140b around the centerline 200a of the battery 200, the pressure at different locations along the edge of each second restraint plate 120b can be monitored, thereby enabling real-time monitoring of the restraining force applied to different locations along the edge of each battery 200. Furthermore, each second pressure member 140b can operate independently, capable of individually adjusting the pressure at different locations along the edge of each second restraint plate 120b. This allows for individual adjustment of the restraining force applied to different locations along the edge of each battery 200, ensuring consistency in the restraining force applied to different locations along the edge of each battery 200. This, in turn, ensures high product consistency and contributes to improved product quality. Furthermore, by adjusting the pressure applied by the second pressure member 140b to different locations along the second restraint plate 120b, the restraining force applied to different locations along the edge of each battery 200 can be adjusted, contributing to increased automation of the formation process for the battery 200, thereby improving the production efficiency of the battery 200 and achieving efficient production of the battery 200.

[0076] See also Figure 12 、 Figure 13 and Figure 14 , Figure 12 yes Figure 1 The structural diagram of the restraint tray 100 in the restraint device 100a in the third embodiment is shown. Figure 13 yes Figure 12 The partial structural diagram of the restraint tray 100 is shown. Figure 14 yes Figure 13 The structure diagram of the restraint tray 100 shown is a schematic diagram after being cut along CC.

[0077] The restraint tray 100 shown in this embodiment is different from the restraint tray 100 shown in the second embodiment described above in that, between each first restraint plate 120a and each first side plate 21, one of the multiple first pressure members 140a is located on the center line 200a of the battery 200, and the other first pressure members 140a among the multiple first pressure members 140a are arranged at intervals around the center line 200a of the battery 200.

[0078] Between two adjacent second restraining plates 120 b , one of the plurality of second pressure members 140 b is located on the center line 200 a of the battery 200 , and the other second pressure members 140 b are spaced apart around the center line 200 a of the battery 200 .

[0079] See also Figure 15 , Figure 15 yes Figure 12 The structure diagram of the restraint tray 100 restraining the battery 200 is shown.

[0080] During the formation process of the battery 200, when the battery 200 is restrained by the restraint tray 100, along the length direction of the restraint tray 100 (the X-axis direction shown in the figure), the telescopic rod 30 of each second pressure member 140b pushes a second restraint plate 120b to move. In other words, along the length direction of the restraint tray 100, the telescopic rod 30 of each second pressure member 140b can be telescoped to both sides to push the two adjacent second restraint plates 120b to move. At the same time, along the length direction of the restraint tray 100 (the X-axis direction shown in the figure), the telescopic rod 30 of each first pressure member 140a pushes a first restraint plate 120a to move. In this process, the multiple second restraint plates 120b cooperate with the two first restraint plates 120a to achieve stable restraint of the battery 200 placed in the first accommodating cavity 150 and the second accommodating cavity 190, thereby preventing the battery 200 from expanding and deforming.

[0081] In this embodiment, by positioning a first pressure member 140a between each first restraining plate 120a and each first side plate 21 on the centerline 200a of the battery 200, the center position of the expanded surface of the entire battery 200 can be restrained, preventing gas at the edge of the battery 200 from gathering toward the middle of the battery 200 during the restraint process, thereby ensuring that the gas inside the battery 200 can be smoothly discharged, thereby helping to prevent the battery 200 from expanding and deforming. On this basis, by positioning a second pressure member 140b between two adjacent second restraining plates 120b on the centerline 200a of the battery 200, the center position of the expanded surface of each battery 200 can be restrained, ensuring that the gas inside each battery 200 can be smoothly discharged, thereby further improving the product consistency and quality of the battery 200.

[0082] Please refer to Figure 16 and Figure 17 , Figure 16 yes Figure 1 The structure diagram of the restraint tray 100 in the restraint device 100a in the fourth embodiment is shown. Figure 17 yes Figure 16 The shown diagram is a partial structural diagram of the restraint tray 100 after being cut open along DD.

[0083] The restraint tray 100 shown in this embodiment is different from the restraint tray 100 shown in the third embodiment described above in that the restraint tray 100 further includes a first limiter 170, which is located on the side of the first restraint plate 120a facing away from the first pressure member 140a. Exemplarily, the first limiter 170 is connected to the bottom plate 10 of the outer frame 110. In some other embodiments, the first limiter 170 may also be connected between the two second side plates 22 of the outer frame 110, which is not strictly limited in this application. In this embodiment, the first limiter 170 is used to limit the contact with the first restraint plate 120a. The first limiter 170 includes a first limiting surface 171 facing the first restraint plate 120a. In this embodiment, there are two first limiters 170. Along the length direction of the restraint tray 100, the two first limiters 170 are located between the two first restraint plates 120a and are spaced apart from each other.

[0084] In this embodiment, the first restraint plate 120a includes a second limiting surface 121 facing the first limiter 170. The second limiting surface 121 is disposed opposite to the first limiting surface 171. It should be noted that the second limiting surface 121 is disposed opposite to the first limiting surface 171 in that the projection of the first limiting surface 171 on the plane where the second limiting surface 121 is located partially overlaps or completely overlaps with the second limiting surface 121.

[0085] The restraint tray 100 further includes a second stopper 180, which is located on a side of the second restraint plate 120b facing away from the second pressure member 140b. Exemplarily, the second stopper 180 is connected to the bottom plate 10 of the outer frame 110 and spaced apart from the first stopper 170. In other embodiments, the first stopper 170 may also be connected between the two second side plates 22 of the outer frame 110, although this is not a strict limitation of the present application.

[0086] In this embodiment, the second stopper 180 is used to limit and abut the second restraining plate 120b. The second stopper 180 includes a third limiting surface 181 facing the second restraining plate 120b. Exemplarily, there are multiple second stoppers 180. The multiple second stoppers 180 are arranged at intervals.

[0087] In this embodiment, the second restraining plate 120b includes a fourth limiting surface 131 facing the second limiter 180. The fourth limiting surface 131 is disposed opposite the third limiting surface 181. It should be noted that the fourth limiting surface 131 and the third limiting surface 181 are disposed opposite each other in that the projection of the third limiting surface 181 on the plane where the fourth limiting surface 131 lies partially or completely overlaps with the fourth limiting surface 131.

[0088] Please refer to Figure 18 and Figure 19 , Figure 18 yes Figure 16 The structural diagram of the restraint tray 100 restraining the battery 200 is shown. Figure 19 yes Figure 18 The restraint tray 100 and the battery 200 are shown as a partial structural diagram after being cut apart along EE.

[0089] During the formation process of the battery 200, when the restraint tray 100 is used to restrain the battery 200, the first restraint plate 120a moves relative to the first side plate 21 under the push of the first pressure member 140a. At this time, the second limiting surface 121 of the first restraint plate 120a can abut against the first limiting surface 171 of the first limiter 170. Under this setting, the first limiter 170 can limit the distance that the first restraint plate 120a moves relative to the first side plate 21, preventing the first restraint plate 120a from over-squeezing the battery 200 when the first pressure member 140a loses control, thereby avoiding damage to the battery 200 due to excessive squeezing, and thus helping to ensure the safety of the battery 200 in the restraint tray 100.

[0090] At the same time, the second restraint plate 120b can also move relative to the first side plate 21 under the push of the second pressure member 140b. At this time, the fourth limiting surface 131 of the second restraint plate 120b can abut against the third limiting surface 181 of the second limiter 180. Under this setting, the second limiter 180 can limit the distance that the second restraint plate 120b moves relative to the first side plate 21, preventing the second restraint plate 120b from over-squeezing the battery 200 when the second pressure member 140b loses control, thereby avoiding damage to the battery 200 due to excessive squeezing, and further helping to ensure the safety of the battery 200 in the restraint tray 100.

[0091] The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. The embodiments of the present application and the features of the embodiments can be combined with each other unless there is a conflict. Therefore, the scope of protection of the present application shall be based on the scope of protection of the claims.

Claims

1. A restraint tray for restraining batteries, characterized in that: The restraint tray includes a restraint plate and a pressure piece, the restraint plate is used to abut the battery, the pressure piece is located on one side of the restraint plate in the thickness direction, the pressure piece includes a telescopic rod and a pressure sensor, the telescopic rod is connected to the restraint plate, the telescopic rod can be extended and retracted, and can push the restraint plate to move, the pressure sensor is provided at one end of the telescopic rod facing the restraint plate, and is used to sense the pressure applied by the telescopic rod on the restraint plate.

2. The restraint tray according to claim 1, wherein: The restraint tray further includes an outer frame, the outer frame including two first side panels, the two first side panels being spaced apart and arranged opposite to each other; There are a plurality of restraint plates, the plurality of restraint plates are located between the two first side plates and are spaced apart from the two first side plates, the plurality of restraint plates include two first restraint plates, and the two first restraint plates are spaced apart and arranged opposite to each other; There are a plurality of pressure members, and the plurality of pressure members include at least two first pressure members, wherein at least one first pressure member is provided between each first restraining plate and each first side plate.

3. The restraint tray according to claim 2, wherein: The battery has a centerline, and the centerline is parallel to the expansion direction of the battery; A plurality of first pressure members are disposed between each of the first restraining plates and each of the first side plates, and the plurality of first pressure members are spaced apart and arranged around the center line.

4. The restraint tray according to claim 3, wherein: Between each of the first restraining plates and each of the first side plates, a first pressure member is located on the center line.

5. The restraint tray according to claim 2, wherein: The telescopic rod of the first pressure member includes a first tube portion and a first rod portion, one end of the first tube portion is connected to the first side plate, and the other end of the first tube portion is spaced apart from the first restraining plate. The first tube portion is provided with a first through hole, and the first through hole penetrates a side wall of the first tube portion along the thickness direction of the first tube portion. The first rod portion is connected between the first tube portion and the first restraining plate and can move relative to the first tube portion along the length direction of the first tube portion, thereby pushing the first restraining plate to move relative to the first side plate. The pressure sensor of the first pressure member is provided at one end of the first rod portion facing the first restraining plate; The first pressure member further includes a first wire, one end of which passes through the first through hole and is electrically connected to the pressure sensor, and the other end of the first wire is used to electrically connect to the controller of the restraint device.

6. The restraint tray according to claim 2, wherein: The restraint tray further includes a first stopper, the first stopper is located on a side of the first restraint plate away from the first pressure member, and the first stopper includes a first stopper surface facing the first restraint plate; The first restraining plate includes a second limiting surface facing the first limiter, and the second limiting surface is arranged opposite to the first limiting surface.

7. The restraint tray according to claim 2, wherein: The plurality of restraint plates further include a second restraint plate, which is located between the two first restraint plates, spaced apart from the two first restraint plates, and movable relative to the first side plate.

8. The restraint tray according to claim 7, wherein: There are a plurality of second restraint plates, each of which is located between two first restraint plates and spaced apart from each other; The multiple pressure members also include a second pressure member, which is located between two adjacent second restraint plates. The telescopic rod of the second pressure member is connected between two adjacent second restraint plates and can push the two adjacent second restraint plates to move relative to the first side plate. The second pressure member has two pressure sensors, and each pressure sensor of the second pressure member is provided at one end of the telescopic rod of the second pressure member facing one of the second restraint plates. Each pressure sensor of the second pressure member is used to sense the pressure applied by the telescopic rod of the second pressure member to one of the second restraint plates.

9. The restraint tray according to claim 8, wherein: The battery has a centerline, and the centerline is parallel to the expansion direction of the battery; A plurality of second pressure members are provided between two adjacent second restraining plates, and the plurality of second pressure members are arranged at intervals around the center line.

10. The restraint tray according to claim 9, wherein: Between two adjacent second restraint plates, one second pressure member is located on the center line.

11. The restraint tray according to claim 8, wherein: The telescopic rod of the second pressure member includes a second cylinder and two second rods. The second cylinder is located between two adjacent second restraint plates and is spaced apart from the two adjacent second restraint plates. The second cylinder is provided with a second through hole. The second through hole penetrates a side wall of the second cylinder along the thickness direction of the second cylinder. Each second rod is connected between the second cylinder and one of the second restraint plates and can move relative to the second cylinder along the length direction of the second cylinder and push one of the second restraint plates to move relative to the first side plate. Each of the pressure sensors of the second pressure member is disposed at one end of the second rod portion facing toward one of the second restraining plates; The second pressure member further includes a second wire, one end of which passes through the second through hole and is electrically connected to the pressure sensor of the second pressure member, and the other end of the second wire is used to electrically connect to the controller of the restraint device.

12. The restraint tray according to claim 8, wherein: The restraint tray further includes a second limiter, the second limiter is located on a side of the second restraint plate away from the second pressure member, and the second limiter includes a third limit surface facing the second restraint plate; The second restraining plate includes a fourth limiting surface facing the second limiter, and the fourth limiting surface is arranged opposite to the third limiting surface.

13. A restraint device, characterized in that: It comprises a controller and a restraint tray as described in any one of claims 1 to 12, wherein the controller is electrically connected to the pressure sensor, and the controller is used to receive the pressure signal sent by the pressure sensor and adjust the pressure applied by the telescopic rod to the restraint plate.

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