Restraint charging and discharging device and battery detection equipment
Through a compact layout of restrained charging and discharging devices, combined with mobile doors, fire protection and cooling systems, the problems of large equipment size and low efficiency are solved, and efficient battery module testing is achieved in limited space.
Patent Information
- Application Number
- CN202421895077.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The structural layout of the existing restrained charging and discharging devices is unreasonable, resulting in a large size of the equipment and occupying a lot of space, limiting the number of arrangements in the limited space and affecting the test production efficiency.
The compact layout of the motion probe mechanism, the restraint mechanism and the lifting tailstock mechanism are adopted to form a charging and discharging test space for the battery module, and the space utilization is optimized through the mobile door, combining fire protection, cooling and transfer devices to achieve the compact design of the equipment.
It effectively reduces the equipment's space, facilitates the arrangement of more restricted charging and discharging devices in the limited space, and improves test production efficiency and safety.
Smart Images
Figure CN223065465U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of battery manufacturing, and more particularly, to a constrained charge and discharge device and a battery detection device. Background Art
[0002] In battery production, using a constrained charge and discharge device to test battery modules is not only a necessary part of quality control but also an important step to ensure product safety, reliable performance, and compliance with market regulations. Since manual constrained charge and discharge testing has low production efficiency and poor safety, currently, most manufacturers basically use fully automated equipment to achieve constrained charge and discharge testing. The constrained charge and discharge devices provided by the prior art have an unreasonable structural layout, resulting in a relatively large volume of the entire device, which requires a large layout space in the workshop. Therefore, it is not conducive to arranging more constrained charge and discharge devices in a limited space, restricting the test production efficiency. Summary of the Utility Model
[0003] The purpose of this application is to provide a constrained charge and discharge device and a battery detection device, which can optimize the overall structural layout of the constrained charge and discharge device, effectively reduce the equipment volume, and facilitate arranging more equipment for operation in a limited space.
[0004] The embodiments of this application are implemented as follows:
[0005] In a first aspect, an embodiment of this application provides a constrained charge and discharge device, including a moving probe mechanism, a constraint mechanism, a lifting tailstock mechanism, and a tray assembly; the tray assembly includes a horizontally arranged tray positioning table and a constraint tray slidably arranged on the tray positioning table for carrying battery modules; there are two sets of moving probe mechanisms arranged on both sides of the sliding direction of the constraint tray, and the constraint mechanism, the lifting tailstock mechanism, and the two sets of moving probe mechanisms enclose a test space on the horizontal plane for performing charge and discharge tests on battery modules; the constraint mechanism and the lifting tailstock mechanism are arranged in sequence along the sliding direction, and the constraint mechanism pushes the constraint tray to abut against the lifting tailstock mechanism to constrain the battery module; a moving door is arranged on the lifting tailstock mechanism; the moving door is driven to move perpendicular to the sliding direction to form a chamber opening for the constraint tray to enter or exit the test space.
[0006] As an optional implementation, a power supply module is arranged above the test space, and the power supply module is electrically connected to the probes arranged on the moving probe mechanism. When the probes contact the cell poles on the battery module, the power supply module performs charge and discharge tests on the battery module.
[0007] As an alternative embodiment, it further includes a fire protection component and a tray lifting component; the fire protection component includes a water tank disposed below the tray positioning table; the tray lifting component includes a guide post with one end connected to the bottom of the water tank and a first telescopic component with its telescopic end connected to the tray positioning table; the guide post is vertically penetrated through the tray positioning table, and the first telescopic component drives the battery module to move downward into the water tank through the tray positioning table.
[0008] As an alternative embodiment, the fire protection component further includes a smoke sensor and spray heads arranged on both sides above the battery module, and the water outlet direction of the spray heads faces the battery module.
[0009] As an alternative embodiment, the lifting tailstock mechanism includes a second telescopic component vertically arranged with its telescopic end connected to the moving door, a tail blocking platform is arranged on the side of the moving door close to the test space, and the restraint mechanism drives the restraint tray carrying the battery module to abut against the tail blocking platform.
[0010] As an alternative embodiment, a cold air component is arranged on one side of the battery module along the sliding direction, and the cold air component has an air outlet with an opening facing the battery module.
[0011] As an alternative embodiment, the cold air component includes a water-cooled circulation tank; a cooling air duct is arranged in the water-cooled circulation tank, and the air inlet of the cold air component is communicated with the air outlet through the air duct.
[0012] As an alternative embodiment, the moving probe mechanism includes a transverse slide rail arranged along the sliding direction of the restraint tray and a frame arranged on the transverse slide rail; a plurality of probe components are arranged on the frame at intervals; the frame is driven to move along the direction away from the battery module on the transverse slide rail.
[0013] As an alternative embodiment, it further includes a main frame, and the moving probe mechanism, the restraint mechanism, the lifting tailstock mechanism and the tray component are all arranged on the main frame.
[0014] In a second aspect, an embodiment of the present application provides a battery detection device, including the above-mentioned restraint charge and discharge device and a transfer device; the arrangement directions of a plurality of restraint charge and discharge devices are perpendicular to the sliding direction of the restraint tray, and there are a plurality of transfer devices and they correspond to the chamber openings of the restraint charge and discharge devices one by one.
[0015] The beneficial effects of the embodiments of the present application include:
[0016] The embodiment of the present application provides a constrained charge and discharge device, which includes a moving probe mechanism, a constraint mechanism, a lifting tailstock mechanism, and a tray assembly. The tray assembly in the embodiment of the present application includes a horizontally arranged tray positioning table and a constraint tray slidably arranged on the tray positioning table for carrying the battery module. There are two groups of moving probe mechanisms in the embodiment of the present application, which are arranged on both sides of the sliding direction of the constraint tray. A test space for performing charge and discharge tests on the battery module is enclosed on the horizontal plane by the constraint mechanism, the lifting tailstock mechanism, and the two groups of moving probe mechanisms, realizing a compact layout and effectively reducing the occupied space of the entire device. Among them, the constraint mechanism and the lifting tailstock mechanism in the embodiment of the present application are arranged in sequence along the sliding direction. The constraint mechanism pushes the constraint tray to abut against the lifting tailstock mechanism to constrain the battery module. A moving door is arranged on the lifting tailstock mechanism in the embodiment of the present application. The moving door is driven to move perpendicular to the sliding direction, forming a chamber opening for the constraint tray to enter or exit the test space. The moving door in the embodiment of the present application moves along the direction perpendicular to the sliding direction of the constraint tray, which can prevent the lifting tailstock mechanism from occupying a large space in the sliding direction and realize the compact layout of the entire device.
[0017] The embodiment of the present application provides a battery detection device, which includes the above-mentioned constrained charge and discharge device and a transfer device; the arrangement directions of multiple constrained charge and discharge devices are perpendicular to the sliding direction of the constraint tray, and there are multiple transfer devices, which correspond to the chamber openings of the constrained charge and discharge devices one by one. The present application can optimize the overall structural layout of the constrained charge and discharge device, effectively reduce the equipment volume, and facilitate arranging more equipment for operation in a limited space. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0019] Figure 1 It is one of the structural schematic diagrams of the constrained charge and discharge device in the embodiment of the present application;
[0020] Figure 2 It is the second structural schematic diagram of the constrained charge and discharge device in the embodiment of the present application;
[0021] Figure 3 It is the third structural schematic diagram of the constrained charge and discharge device in the embodiment of the present application;
[0022] Figure 4 It is the fourth structural schematic diagram of the constrained charge and discharge device in the embodiment of the present application;
[0023] Figure 5 This is the fifth structural schematic diagram of the restraint charge and discharge device according to the embodiments of the present application;
[0024] Figure 6 This is the structural schematic diagram of the battery detection device according to the embodiments of the present application.
[0025] Icon:
[0026] 100 - Restraint charge and discharge device; 101 - Moving probe mechanism; 102 - Restraint mechanism; 103 - Lifting tailstock mechanism; 104 - Tray assembly; 105 - Tray positioning table; 106 - Battery module; 107 - Restraint tray; 108 - Sliding direction; 109 - Moving door; 110 - Compartment opening; 111 - Power module; 112 - Fire protection component; 113 - Tray lifting component; 114 - Water tank; 115 - Guide post; 116 - First telescopic component; 117 - Cold air component; 118 - Water-cooled circulation tank; 119 - Air outlet; 120 - Horizontal slide rail; 121 - Main body frame; 122 - Battery detection device; 123 - Second telescopic component; 124 - Tail blocking table. Detailed implementation manners
[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.
[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.
[0030] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0031] In battery production, using the constrained charge and discharge device 100 to test the battery module 106 is not only a necessary link for quality control but also an important step to ensure product safety, reliable performance, and compliance with market regulations. Since manually performing the constrained charge and discharge test has low production efficiency and poor safety, currently, most manufacturers basically use fully automated equipment to achieve the constrained charge and discharge test. The constrained charge and discharge device 100 provided by the prior art has an unreasonable structural layout, resulting in a relatively large volume of the entire device, which requires a large layout space in the workshop. Therefore, it is not conducive to arranging more constrained charge and discharge devices 100 in a limited space, restricting the test production efficiency.
[0032] To solve the above technical problems, the embodiments of the present application provide a constrained charge and discharge device 100 and a battery detection device 122.
[0033] Refer to Figure 1 、 Figure 2 As shown in
[0034] It should be noted that for the restraint charge and discharge device 100 provided in the embodiments of the present application, the moving probe mechanism 101 contacts the battery module 106 from both sides of the sliding direction 108 of the restraint tray 107, the restraint mechanism 102 contacts the battery module 106 from one end of the sliding direction 108, and the lifting tailstock mechanism 103 contacts the battery module 106 from the other end of the sliding direction 108. That is to say, the two sets of moving probe mechanisms 101, the restraint mechanism 102, and the lifting tailstock mechanism 103 are compactly arranged around the restraint tray 107.
[0035] The embodiments of the present application enable the battery module 106 on the restraint tray 107 to perform restraint charge and discharge tests within the test space formed by enclosing, which is beneficial to ensuring that the performance parameters of each battery are within a certain tolerance range to maintain the consistency of mass-produced batteries. Through standardized charge and discharge tests, unqualified or abnormally performing batteries can be screened out to prevent them from entering the market.
[0036] In addition, for the restraint charge and discharge device 100 provided in the embodiments of the present application, a lifting tailstock mechanism 103 is provided on the movement path of the battery module 106.
[0037] Among them, the lifting tailstock mechanism 103 can drive the moving door 109 to open the chamber opening 110 communicating with the test space, so that the restraint tray 107 slides to carry the battery module 106 into the test space, and then the lifting tailstock mechanism 103 drives the moving door 109 to close the chamber opening 110, so that when the restraint mechanism 102 applies restraint to the battery module 106, it can abut against the lifting tailstock mechanism 103 to ensure the stability of the restraint state.
[0038] Among them, when the charge and discharge test is completed, the restraint mechanism 102 first releases the restraint, so that the restraint tray 107 is released from the abutting state with the lifting position mechanism. Then the lifting tailstock mechanism 103 can drive the moving door 109 to open the chamber opening 110, so that the battery module 106 can be pushed out of the test space, and then the charge and discharge test of the next battery module 106 can be carried out.
[0039] The embodiments of the present application provide a restraint charge and discharge device 100, including a moving probe mechanism 101, a restraint mechanism 102, a lifting tailstock mechanism 103, and a tray assembly 104. The tray assembly 104 of the embodiments of the present application includes a horizontally arranged tray positioning table 105 and a restraint tray 107 slidably arranged on the tray positioning table 105 for carrying the battery module 106.
[0040] There are two sets of the motion probe mechanisms 101 in the embodiments of the present application, which are arranged on both sides of the sliding direction 108 of the restraint tray 107. The restraint mechanism 102, the lifting tailstock mechanism 103 and the two sets of motion probe mechanisms 101 enclose a test space on the horizontal plane for performing charge and discharge tests on the battery module 106, realizing a compact layout and effectively reducing the occupied space of the entire device.
[0041] Among them, the restraint mechanism 102 and the lifting tailstock mechanism 103 in the embodiments of the present application are arranged in sequence along the sliding direction 108. The restraint mechanism 102 pushes the restraint tray 107 to abut against the lifting tailstock mechanism 103 to restrain the battery module 106. A moving door 109 is provided on the lifting tailstock mechanism 103 in the embodiments of the present application. The moving door 109 is driven to move perpendicular to the sliding direction 108 to form a chamber opening 110 for the restraint tray 107 to enter or exit the test space.
[0042] The moving door 109 in the embodiments of the present application moves perpendicular to the sliding direction 108 of the restraint tray 107, which can prevent the lifting tailstock mechanism 103 from occupying a large space in the sliding direction 108 and realize the compact layout of the entire device.
[0043] Refer to Figure 1 、 Figure 2 As shown in, as an optional implementation manner, a power module 111 is provided above the test space. The power module 111 is electrically connected to the probes provided on the motion probe mechanism 101. When the probes contact the cell poles on the battery module 106, the power module 111 performs charge and discharge tests on the battery module 106.
[0044] Furthermore, a power module 111 electrically connected to the probes is provided above the test space in the embodiments of the present application. The power module 111 is provided directly above the test space to effectively utilize the space above the test space.
[0045] It should be noted that there is a certain distance between the power module 111 and the battery module 106 in the embodiments of the present application to prevent the battery module 106 from entering the test space and interfering with the power module 111 above. In addition, the power module 111 can be made as close as possible to the battery module 106, which is beneficial to reducing the overall volume.
[0046] Refer to Figure 1 、 Figure 2 And Figure 3As shown, as an alternative embodiment, it further includes a fire protection component 112 and a tray lifting component 113; the fire protection component 112 includes a water tank 114 disposed below the tray positioning table 105; the tray lifting component 113 includes a guide post 115 with one end connected to the bottom of the water tank 114 and a first telescopic component 116 with a telescopic end connected to the tray positioning table 105; the guide post 115 is vertically inserted through the tray positioning table 105, and the first telescopic component 116 drives the battery module 106 to move downward through the tray positioning table 105 and into the water tank 114.
[0047] Furthermore, in the embodiment of the present application, a water tank 114 is arranged below the test space, realizing the rational utilization of the space below the tray positioning table 105.
[0048] Among them, the fire protection component 112 further includes a smoke sensor and spray heads arranged on both sides above the battery module 106, and the water outlet direction of the spray heads faces the battery module 106.
[0049] When the smoke sensor detects a dangerous situation, water can be injected into the water tank 114 through a water pipe, and at the same time, the spray heads spray water to extinguish the fire on the battery module 106. The tray positioning table 105 can be driven to move downward through the first telescopic component 116, so that the battery module 106 is immersed in the water tank 114 to achieve rapid fire extinguishing.
[0050] Refer to Figure 3 As shown, as an alternative embodiment, the lifting tailstock mechanism 103 includes a second telescopic component 123 vertically arranged with a telescopic end connected to the moving door 109. A tail blocking platform 124 is arranged on the side of the moving door 109 close to the test space, and the restraint mechanism 102 drives the restraint tray 107 carrying the battery module 106 to abut against the tail blocking platform 124.
[0051] It should be noted that the lifting tailstock mechanism 103 of the embodiment of the present application includes a second telescopic component 123, and the second telescopic component 123 can drive the moving door 109 to move in the vertical direction. When the second telescopic component 123 drives the moving door 109 to move downward, it can block the cabin opening 110, and when the second telescopic component 123 drives the moving door 109 to move upward, it can open the cabin opening 110.
[0052] Refer to Figure 4 As shown, as an alternative embodiment, a cold air component 117 is arranged on one side of the battery module 106 along the sliding direction 108, and the cold air component 117 has an air outlet 119 with an opening facing the battery module 106.
[0053] Among them, the cold air component 117 includes a water-cooled circulation tank 118; a cooling air duct is arranged in the water-cooled circulation tank 118, and the air inlet of the cold air component 117 is communicated with the air outlet 119 through the air duct.
[0054] It should be noted that the cold air component 117 provided in the embodiment of the present application is arranged on the side of the entire device. According to needs, the water-cooled circulation tank 118 can also be arranged on the upper part of the power module 111 to avoid increasing the volume of the side. Those skilled in the art can make selections according to needs.
[0055] Wherein, vortex fans can be arranged at both the air inlet and the air outlet 119 of the cooling air duct to increase the air flow velocity and enhance the cooling effect on the battery module 106.
[0056] Refer to Figure 3 、 Figure 4 As shown, as an alternative embodiment, the moving probe mechanism 101 includes a transverse slide rail 120 arranged along the sliding direction 108 of the restraint tray 107 and a frame arranged on the transverse slide rail 120; a plurality of probe assemblies are arranged on the frame at intervals; the frame is driven to move along the transverse slide rail 120 in a direction away from the battery module 106.
[0057] In the embodiment of the present application, the arrangement of the transverse slide rail 120 enables the frame to slide in a direction away from the cabin opening 110, so that the staff can perform maintenance and replacement of the probe assemblies on the frame on one side away from the cabin opening 110. Through the above arrangement in the embodiment of the present application, the space on both sides of the sliding direction 108 of the restraint tray 107 is not increased due to maintenance and replacement. Therefore, when a plurality of restraint charge and discharge devices 100 are arranged in sequence along a path perpendicular to the sliding direction 108, maintenance work can still be achieved, and adjacent devices can be arranged in contact with each other to achieve an overall compact layout.
[0058] Refer to Figure 1 and Figure 5 As shown, as an alternative embodiment, it further includes a main frame 121, and the moving probe mechanism 101, the restraint mechanism 102, the lifting tailstock mechanism 103 and the tray assembly 104 are all arranged on the main frame 121.
[0059] Refer to Figure 5 、 Figure 6 As shown, the embodiment of the present application provides a battery detection device 122, including the above-mentioned restraint charge and discharge device 100 and a transfer device; the arrangement directions of a plurality of restraint charge and discharge devices 100 are perpendicular to the sliding direction 108 of the restraint tray 107, and there are a plurality of transfer devices corresponding to the cabin openings 110 of the restraint charge and discharge devices 100 one by one.
[0060] The battery detection device 122 according to the embodiment of the present application includes a plurality of restraint charge and discharge devices 100, and there is no gap between two adjacent restraint charge and discharge devices 100, that is to say, two adjacent restraint charge and discharge devices 100 are in contact with each other, which can achieve a compact layout. Among them, those skilled in the art can select the specific structure of the transfer device according to needs, and no special limitation is made thereto. The battery module 106 can be transferred to the cabin opening 110 through the transfer device.
[0061] The present application can optimize the overall structural layout of the restraint charge and discharge device 100, effectively reduce the volume of the equipment, and facilitate the arrangement of more equipment for operation in a limited space.
[0062] The foregoing is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A restraint charge and discharge device (100), characterized in that, It includes a motion probe mechanism (101), a restraint mechanism (102), a lifting tailstock mechanism (103) and a tray assembly (104); the tray assembly (104) includes a horizontally arranged tray positioning table (105) and a restraint tray (107) slidably arranged on the tray positioning table (105) for carrying a battery module (106); there are two sets of the motion probe mechanisms (101) and they are arranged on both sides of the sliding direction (108) of the restraint tray (107), and the restraint mechanism (102), the lifting tailstock mechanism (103) and the two sets of the motion probe mechanisms (101) enclose a test space on the horizontal plane for performing charge and discharge tests on the battery module (106); the restraint mechanism (102) and the lifting tailstock mechanism (103) are arranged in sequence along the sliding direction (108), and the restraint mechanism (102) pushes the restraint tray (107) to abut against the lifting tailstock mechanism (103) to apply restraint to the battery module (106); a moving door (109) is arranged on the lifting tailstock mechanism (103); the moving door (109) is driven to move perpendicular to the sliding direction (108) to form a chamber opening (110) for the restraint tray (107) to enter or exit the test space.
2. The constrained charge and discharge device (100) according to claim 1, wherein A power supply module (111) is arranged above the test space, and the power supply module (111) is electrically connected to the probes arranged on the motion probe mechanism (101). When the probes contact the cell poles on the battery module (106), the power supply module (111) performs charge and discharge tests on the battery module (106).
3. The constrained charge and discharge device (100) according to claim 2, characterized in that, It further includes a fire protection component (112) and a tray lifting component (113); the fire protection component (112) includes a water tank (114) arranged below the tray positioning table (105); the tray lifting component (113) includes a guide post (115) with one end connected to the bottom of the water tank (114) and a first telescopic component (116) with a telescopic end connected to the tray positioning table (105); the guide post (115) vertically penetrates through the tray positioning table (105), and the first telescopic component (116) drives the battery module (106) to move downward through the tray positioning table (105) into the water tank (114).
4. The restraint charge and discharge device (100) according to claim 3, characterized in that, The fire protection component (112) further includes a smoke sensor and spray heads arranged on both sides above the battery module (106), and the water outlet directions of the spray heads face the battery module (106).
5. The restraint charge and discharge device (100) according to any one of claims 1-4, characterized in that, The lifting tailstock mechanism (103) includes a second telescopic component (123) vertically arranged with a telescopic end connected to the moving door (109), and a tail blocking platform (124) is arranged on the side of the moving door (109) close to the test space. The restraint mechanism (102) drives the restraint tray (107) carrying the battery module (106) to abut against the tail blocking platform (124).
6. The constrained charge and discharge device (100) according to any one of claims 1-4, characterized in that, One side of the battery module (106) along the sliding direction (108) is provided with a cold air assembly (117), and the cold air assembly (117) has an air outlet (119) with an opening facing the battery module (106).
7. The constrained charge and discharge device (100) according to claim 6, characterized in that, The cold air assembly (117) includes a water-cooled circulation tank (118); a cooling air duct is provided in the water-cooled circulation tank (118), and the air inlet of the cold air assembly (117) is communicated with the air outlet (119) through the air duct.
8. The restraint charge and discharge device (100) according to any one of claims 1-4, characterized in that, The moving probe mechanism (101) includes a transverse slide rail (120) arranged along the sliding direction (108) of the restraint tray (107) and a frame arranged on the transverse slide rail (120); a plurality of probe assemblies are arranged on the frame at intervals; the frame is driven to move along the transverse slide rail (120) in a direction away from the battery module (106).
9. The restraint charge and discharge device (100) according to any one of claims 1-4, characterized in that, It further includes a main frame (121), and the moving probe mechanism (101), the restraint mechanism (102), the lifting tailstock mechanism (103) and the tray assembly (104) are all arranged on the main frame (121).
10. A battery detection device (122), characterized in that, It includes the restraint charge and discharge device (100) according to any one of claims 1-9 and a transfer device; a plurality of the restraint charge and discharge devices (100) are arranged perpendicular to the sliding direction (108) of the restraint tray (107), and there are a plurality of the transfer devices and they correspond to the chamber openings (110) of the restraint charge and discharge devices (100) one by one.