Gas circuit device and execution system

Abstract

The utility model relates to a gas circuit device and an execution system, comprising: first gas circuit groups, each first gas circuit group comprising at least one first gas circuit, each first gas circuit being communicated with a lower cavity of a cylinder of a cylinder group corresponding to the first gas circuit; the second gas path groups are arranged in one-to-one correspondence with the first gas path groups, the number of the second gas paths included in each second gas path group is equal to that of the first gas paths included in the corresponding first gas path group, and the second gas paths are communicated with the upper cavities of the cylinders communicated with the corresponding first gas paths; each first gas path is communicated with the gas storage mechanism; the gas path device has a first state and a second state, when the gas path device is in the first state, gas enters the lower cavity through the gas source, the gas storage mechanism and the first gas path, and gas in the upper cavity is discharged through the second gas path; and when the gas circuit device is in the second state, the gas enters the upper cavity through the gas source and the second gas circuit, and the gas in the lower cavity flows into the gas storage mechanism through the first gas circuit to be stored.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing equipment technical field especially relates to a gas circuit device and execution system. BACKGROUND

[0002] In the lithium battery production line, hot pressing is a very important process. By pressing the winding cell or the laminated cell at room temperature or high temperature for a period of time, the quality of the cell can be greatly improved, such as eliminating the diaphragm wrinkle to make the diaphragm and the pole piece tightly fit, improving the flatness of the lithium ion battery, and making the impurities in the cell puncture the diaphragm to cause the cell short circuit, so as to quickly identify such unqualified products during testing.

[0003] During hot pressing, the movement of the piston in the air cylinder is controlled by the gas circuit device, and the piston movement drives the hot pressing plate to move. The piston divides the air cylinder cavity into a first cavity and a second cavity. When the first cavity is used as the air inlet cavity and the second cavity is used as the air outlet cavity, the forward movement of the piston can drive the hot pressing plate to extend to press the cell. When the second cavity is used as the air inlet cavity and the first cavity is used as the air outlet cavity, the reverse movement of the piston can drive the hot pressing plate to retract and separate from the cell.

[0004] However, in the conventional gas circuit device, no matter the piston moves forward or reversely, the gas in the air outlet cavity is directly discharged into the atmosphere, and the gas is consumed (wasted) in large quantities. INVENTION CONTENTS

[0005] Therefore, it is necessary to provide a gas circuit device and execution system capable of reducing gas consumption in view of the problem that the conventional gas circuit device is arranged in a manner that causes a large amount of gas consumption.

[0006] A gas circuit device comprises:

[0007] Each of the first gas circuit groups comprises at least one first gas circuit, and each of the first gas circuits is in communication with the lower cavity of one air cylinder of the corresponding air cylinder group;

[0008] Each of the second gas circuit groups is arranged one-to-one corresponding to the first gas circuit groups, and the number of second gas circuits included in each of the second gas circuit groups is equal to the number of first gas circuits included in the corresponding first gas circuit group, and each of the second gas circuits is in communication with the upper cavity of the corresponding air cylinder;

[0009] Each of the first gas circuits is in communication with the gas storage mechanism;

[0010] The gas path device has a first state and a second state, when the gas path device is in the first state, the gas enters the lower cavity through the gas storage mechanism and the first gas path, and the gas in the upper cavity is discharged through the second gas path; when the gas path device is in the second state, the gas enters the upper cavity through the second gas path, and the gas in the lower cavity flows to the gas storage mechanism through the first gas path.

[0011] In one of the embodiments, an electric proportional valve, a first speed control valve, a pilot check valve and a hand control pressure relief valve are arranged on each of the first gas paths.

[0012] The electric proportional valve is used to adjust the inlet pressure of the gas entering the lower cavity, the first speed control valve is used for throttling speed control when the lower cavity discharges, the pilot check valve is opened under the control of the pilot gas connected to the upper cavity for discharging the lower cavity, and the hand control pressure relief valve is used to manually discharge the residual gas in the lower cavity during debugging.

[0013] In one of the embodiments, each of the first gas path groups includes a main path and at least two branch paths, and the number of the branch paths is equal to the number of the cylinders included in each of the cylinder groups.

[0014] One end of the main path is connected to the gas storage mechanism, and one end of each of the branch paths is in communication with the other end of the main path and one of the lower cavities.

[0015] The electric proportional valve is arranged on the main path, and the first speed control valve, the pilot check valve and the hand control pressure relief valve are arranged on each of the branch paths.

[0016] Each of the first gas paths includes the main path and one of the branch paths.

[0017] In one of the embodiments, a shut-off valve is arranged on each of the first gas paths, and the shut-off valve is used to realize the flow or cut-off of the gas in the first gas path.

[0018] In one of the embodiments, the shut-off valve is a two-position two-way electromagnetic valve arranged on the first gas path.

[0019] In one of the embodiments, the gas path device further includes a first communication pipeline and a first check valve, the first communication pipeline is in communication with a gas source and the gas storage mechanism, and the first check valve is arranged on the first communication pipeline to allow the gas to flow from the gas source to the gas storage mechanism.

[0020] And / or

[0021] The gas path device further includes an exhaust valve connected to the gas storage mechanism to discharge the residual gas in the gas storage mechanism during debugging.

[0022] In one of the embodiments, the gas path device further comprises a switching mechanism, each of the second gas paths comprises an intake gas path and an exhaust gas path;

[0023] When the gas path device is in the first state, the switching mechanism connects the exhaust gas path and cuts off the connection of the intake gas path; when the gas path device is in the second state, the switching mechanism cuts off the connection of the exhaust gas path and connects the intake gas path between the air source and the upper cavity.

[0024] In one of the embodiments, a pressure reducing valve is arranged on the intake gas path or a pressure reducing valve is arranged on the second connecting pipeline connected between the air source and the intake gas path;

[0025] and / or

[0026] A second speed control valve is arranged on the exhaust gas path, which is used for throttling and speed control when the upper cavity is exhausted.

[0027] In one of the embodiments, the switching mechanism comprises a two-position three-way electromagnetic valve or a two-position five-way electromagnetic valve, the first interface of the two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve is connected with the air source, the second interface is connected with the upper cavity, and the third interface is connected with the external space;

[0028] When the gas path device is in the first state, the second interface is connected with the third interface to connect the exhaust gas path and cut off the connection of the intake gas path; when the gas path device is in the second state, the first interface is connected with the second interface to connect the intake gas path and cut off the connection of the exhaust gas path.

[0029] In one of the embodiments, each of the second gas paths comprises an intake gas path and an exhaust gas path; when the gas path device is in the first state, the exhaust gas path is connected and the intake gas path is cut off; when the gas path device is in the second state, the intake gas path is connected between the air source and the upper cavity and the exhaust gas path is cut off;

[0030] The gas path device comprises a busbar, the busbar is provided with an intake passage and an exhaust passage;

[0031] Each of the intake gas paths converges in the intake passage, the intake passage is connected with the air source, and each of the exhaust gas paths converges in the exhaust passage and is connected with the external space through the exhaust passage.

[0032] An execution system comprises a cylinder group, an execution unit and a gas path device as described above;

[0033] Each of the cylinder groups comprises at least one cylinder, each of the cylinders is divided into an upper chamber and a lower chamber by a piston, and the first gas path group, the second gas path group, the cylinder group and the execution unit are arranged in one-to-one correspondence.

[0034] All of the pistons of each of the cylinder groups are connected to the execution unit corresponding thereto.

[0035] In one of the embodiments, the execution system is a hot press, and the execution unit is a hot press plate.

[0036] The gas path device and the execution system described above, when the gas path device is in the first state and supplies gas to the lower chamber for the first time, the gas in the gas source flows to the gas storage mechanism and then flows to the lower chamber through the first gas path, and under the action of the gas pressure, the gas in the upper chamber of the cylinder is discharged through the second gas path. When the gas path device is in the second state, the gas in the gas source flows to the second gas path and then flows to the upper chamber through the second gas path, and under the action of the gas pressure, the gas in the lower chamber of the cylinder is discharged through the first gas path. Since the end of the first gas path away from the cylinder is connected to the gas storage mechanism, the gas discharged through the first gas path is stored in the gas storage mechanism. When the gas path device is in the first state again and supplies gas to the lower chamber again, since the gas storage mechanism stores gas, the gas entering the lower chamber is the gas stored in the gas storage mechanism, and when the gas path device is in the second state again, the gas in the lower chamber will still be stored in the gas storage mechanism. It can be seen that, in the gas path device provided in the present application, the gas supply to the lower chamber comes from the gas storage mechanism after the initial gas supply from the gas source. Compared with the case in the prior art that the gas in the lower chamber is directly discharged into the atmosphere, the provision of the gas storage mechanism realizes the collection and reuse of the gas, reduces the consumption of the gas and saves energy. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A schematic diagram of an execution system provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a lower chamber of a cylinder of a gas path device provided in an embodiment of the present application when the lower chamber is supplied with gas and the upper chamber is discharged (the middle red arrow represents gas supply, and the blue arrow represents gas discharge); Figure 2

[0039] Figure 3 A schematic diagram of an upper chamber of a cylinder of a gas path device provided in an embodiment of the present application when the upper chamber is supplied with gas and the lower chamber is discharged (the middle red arrow represents gas supply, and the blue arrow represents gas discharge); Figure 3

[0040] Figure 4 A structural schematic diagram of an execution system provided in an embodiment of the present application.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] ​​1000, execution system; 100, gas circuit device; A, first gas circuit group; 10, first gas circuit; 11, electric proportional valve; 12, first speed control valve; 13, pilot operated check valve; 14, hand control pressure relief valve; 15, shut-off valve; 16, main circuit; 17, branch circuit; B, second gas circuit group; 20, second gas circuit; 20a, inlet gas circuit; 20b, exhaust gas circuit; 21, second speed control valve; 30, gas storage mechanism; 40, first communication pipeline; 50, first check valve; 60, exhaust valve; 70, switching mechanism; 80, second communication pipeline; 90, pressure reducing valve; 110, air pressure gauge; 120, bus plate; 130, third communication pipeline; C, cylinder group; 200, cylinder; 201, piston; 202, lower cavity; 203, upper cavity; 300, execution unit. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0044] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0045] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication of two elements or the interaction of two elements, unless another definite limitation. For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0047] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0048] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0049] Reference Figure 1 An embodiment of the present application provides a gas circuit device 100, which comprises at least one group of first gas circuit groups A and at least one group of second gas circuit groups B, and the second gas circuit groups B are arranged in one-to-one correspondence with the first gas circuit groups A. That is, the number of the first gas circuit groups A and the second gas circuit groups B is equal, and they are arranged in one-to-one correspondence. Each group of first gas circuit groups A comprises at least one first gas circuit 10, and each group of second gas circuit groups B comprises at least one second gas circuit 20, and the number of the second gas circuits 20 and the first gas circuits 10 is equal and arranged in one-to-one correspondence. Optionally, the number of the first gas circuit groups A, the second gas circuit groups B and the cylinder groups C is equal, the number of the first gas circuits 10 included in the first gas circuit groups A and the number of the second gas circuits 20 included in the second gas circuit groups B are equal to the number of the cylinders 200 included in the corresponding cylinder groups C, and the first gas circuits 10, the second gas circuits 20 and the cylinders 200 are arranged in one-to-one correspondence.

[0050] In some embodiments, the cylinder groups C, the first gas path groups A and the second gas path groups B are each 5 groups. Each of the cylinder groups C includes 2 cylinders 200, each of the first gas path groups A includes 2 first gas paths 10, and each of the second gas path groups B includes 2 second gas paths 20. It is contemplated that in other embodiments, the number of groups of the cylinder groups C, the first gas path groups A and the second gas path groups B is not limited, and the number of cylinders 200 included in each of the cylinder groups C, the number of first gas paths 10 included in each of the first gas path groups A, and the number of second gas paths 20 included in each of the second gas path groups B is not limited.

[0051] Optionally, referring back to Figure 1 The cylinder 200 has a piston 201 arranged in the inner cavity of the cylinder 200 to divide the inner cavity of the cylinder 200 into an upper cavity 203 and a lower cavity 202. Specifically, the upper cavity 203 is located above the lower cavity 202. The gas path device 100 further includes a gas storage mechanism 30, and each end of each of the first gas paths 10 is in communication with the gas storage mechanism 30 and the lower cavity 202 of the cylinder 200 corresponding thereto, respectively. The second gas path 20 is in communication with the upper cavity 203 of the cylinder 200 corresponding to the first gas path 10.

[0052] Further, the gas path device 100 has a first state and a second state, and can be switched between the first state and the second state. Referring back to Figure 2 When the gas path device 100 is in the first state, gas enters the lower cavity 202 through the gas storage mechanism 30 and the first gas path 10, and gas in the upper cavity 203 is discharged through the second gas path 20. Referring back to Figure 3 When the gas path device 100 is in the second state, gas enters the upper cavity 203 through the second gas path 20, and gas in the lower cavity 202 is stored in the gas storage mechanism 30 through the first gas path 10. It can be seen that when the gas path device 100 is in the first state, gas flows to the lower cavity 202 through the gas storage mechanism 30 and the first gas path 10, the lower cavity 202 of the cylinder 200 is supplied with gas, the gas in the upper cavity 203 of the cylinder 200 is discharged through the second gas path 20, and at this time the piston 201 rises. When the gas path device 100 is in the second state, gas flows to the upper cavity 203 through the second gas path 20, the upper cavity 203 of the cylinder 200 is supplied with gas, and the gas in the lower cavity 202 of the cylinder 200 is discharged through the first gas path 10, and at this time the piston 201 descends.

[0053] It should be noted that the structure of the gas storage mechanism 30 is not limited in the present application. For example, the gas storage mechanism 30 can include one gas storage tank, and each first gas path 10 is in communication with the gas storage tank. Meanwhile, the gas storage tank is in communication with the gas source. Alternatively, the gas storage mechanism 30 can include a plurality of gas storage tanks, and one first gas path 10 or one group of first gas paths A is provided with one gas storage tank, and the first gas path 10 is in communication with the corresponding gas storage tank. It should also be noted that the first gas path 10 can be directly in communication with the gas storage tank or in communication with the gas storage tank through an intermediate pipeline. For example, in one specific embodiment, when the gas storage mechanism 30 includes one gas storage tank, the ends of the first gas paths 10 away from the lower cavity 202 converge to the third communication pipeline 130, and are in communication with the gas storage tank through the third communication pipeline 130.

[0054] When the gas path device 100 is in the first state and supplies gas to the lower cavity 202 for the first time, the gas in the gas source flows to the gas storage mechanism 30 and then flows to the lower cavity 202 through the first gas path 10. Under the action of the gas pressure, the gas in the upper cavity 203 of the gas cylinder 200 is discharged through the second gas path 20. When the gas path device 100 is in the second state, the gas in the gas source flows to the second gas path 20 and then flows to the upper cavity 203 through the second gas path 20. Under the action of the gas pressure, the gas in the lower cavity 202 of the gas cylinder 200 is discharged through the first gas path 10. Since the end of the first gas path 10 away from the gas cylinder 200 is in communication with the gas storage mechanism 30, the gas discharged through the first gas path 10 is stored in the gas storage mechanism 30. When the gas path device 100 is in the first state again and supplies gas to the lower cavity 202 again, since the gas storage mechanism 30 stores gas, the gas entering the lower cavity 202 is the gas stored in the gas storage mechanism 30. When the gas path device 100 is in the second state again, the gas in the lower cavity 202 will still be stored in the gas storage mechanism 30. It can be seen that, in the gas path device 100 provided in the present application, the gas source supplies gas to the lower cavity 202 only initially, and the subsequent supply of gas to the lower cavity 202 comes from the gas storage mechanism 30. Compared with the case where the gas in the lower cavity 202 is directly discharged into the atmosphere in the prior art, the provision of the gas storage mechanism 30 realizes the collection and reuse of the gas, reduces the consumption of the gas, and saves energy.

[0055] In some embodiments, referring to Figure 1 , the gas path device 100 further includes a first communication pipeline 40 and a first one-way valve 50. The first communication pipeline 40 is in communication with the gas source and the gas storage mechanism 30, and the first one-way valve 50 is arranged on the first communication pipeline 40 to allow the gas to flow from the gas source to the gas storage mechanism 30 and to prevent the gas from flowing from the gas storage mechanism 30 to the gas source. By providing the first communication pipeline 40, the communication between the gas storage mechanism 30 and the gas source is facilitated. By arranging the first one-way valve 50 on the first communication pipeline 40, the gas can be prevented from flowing from the gas storage mechanism 30 to the gas source, so that the gas can be stored in the gas storage mechanism 30.

[0056] Optionally, the gas circuit device 100 further comprises an exhaust valve 60 connected with the gas storage mechanism 30 for exhausting residual gas in the gas storage mechanism 30 during debugging.

[0057] In some embodiments, the exhaust valve 60 is a two-position three-way manual valve. Of course, in other embodiments, the type of the exhaust valve 60 is not limited.

[0058] In some embodiments, referring back to Figure 1 The first gas circuit 10 is provided with an electric proportional valve 11, a first speed control valve 12, a pilot check valve 13 and a manual pressure relief valve 14. The electric proportional valve 11 is used to adjust the inlet pressure of the gas into the lower chamber 202, the first speed control valve 12 is used to throttle and regulate the speed when the lower chamber 202 is exhausted, the pilot check valve 13 is controlled to open by the pilot gas connected with the upper chamber 203 for exhausting the lower chamber 202, and the manual pressure relief valve 14 is used to manually exhaust the residual gas in the lower chamber 202 during debugging.

[0059] Specifically, when the lower chamber 202 is filled with gas, the electric control system can accurately set the inlet pressure in real time, and the electric proportional valve 11 can obtain the pressure set by the electric control system, so as to achieve the purpose of pressure regulation of the gas into the lower chamber 202. The first speed control valve 12 is not controlled when the lower chamber 202 is filled with gas, and is only throttled and regulated when the lower chamber 202 is exhausted. The pilot check valve 13 is controlled by the pilot gas connected with the second gas circuit 20 connected with the upper chamber 203 of the cylinder 200 when the lower chamber 202 is exhausted, and is not controlled when the lower chamber 202 is filled with gas. Normally, the second gas circuit 20 can provide high-pressure pilot gas to push open the pilot check valve 13, so that the exhaust can be smoothly performed. If the power and gas are abnormally cut off, the second gas circuit 20 cannot provide high-pressure pilot gas to push open the pilot check valve 13, so that the exhaust is blocked, and the cylinder 200 is locked, so that the piston 201 cannot continue to descend, thereby ensuring the safety of personnel and equipment. The manual pressure relief valve 14 is generally in a normally closed state, and is only manually used to exhaust the residual gas in the lower chamber 202 of the cylinder 200 during debugging.

[0060] Further, the first gas circuit 10 is further provided with a shut-off valve 15, which allows the gas to flow in the first gas circuit 10 or cut off the flow of the gas in the first gas circuit 10. When the gas flows in the first gas circuit 10, the lower chamber 202 of the cylinder 200 is communicated with the gas storage mechanism 30 through the first gas circuit 10; when the flow of the gas in the first gas circuit 10 is cut off, the first gas circuit 10 is cut off, so as to facilitate the individual debugging of the first gas circuit 10.

[0061] Specifically, the cut-off valve 15 is a two-position two-way electromagnetic valve. It can be understood that in some other embodiments, the type of the cut-off valve 15 is not limited as long as the purpose of cutting off or allowing the gas to flow in the first gas circuit 10 when needed can be achieved.

[0062] In some embodiments, referring back to Figure 1 , each first gas circuit group A includes a total circuit 16 and at least two branch circuits 17, and the number of the branch circuits 17 is equal to the number of the cylinders 200 included in each cylinder group C. One end of the total circuit 16 is connected to the gas storage mechanism 30, and one end of each branch circuit 17 is in communication with the other end of the total circuit 16 and one lower chamber 202. Each first gas circuit 10 includes the total circuit 16 and one branch circuit 17. Among them, the electric proportional valve 11 and the cut-off valve 15 are arranged on the total circuit 16, and the cut-off valve 15 is located between the electric proportional valve 11 and the gas storage mechanism 30. The first speed control valve 12, the pilot-operated check valve 13, and the hand-operated pressure relief valve 14 are arranged on each branch circuit 17. In this way, the plurality of first gas circuits 10 of each first gas circuit group A share the electric proportional valve 11 and the cut-off valve 15, which reduces the number of valves used by the gas circuit device 100 and simplifies the structural arrangement of the gas circuit device 100.

[0063] It should be understood that in some other embodiments, the plurality of first gas circuits 10 included in the first gas circuit group A can be independently arranged, and the electric proportional valve 11 and the cut-off valve 15 are arranged on each first gas circuit 10.

[0064] In some embodiments, referring back to Figure 1 , the gas circuit device 100 further includes a switching mechanism 70, and each second gas circuit 20 includes an intake gas circuit 20a and an exhaust gas circuit 20b. When the gas circuit device 100 is in the first state, the switching mechanism 70 causes the exhaust gas circuit 20b to be in communication and cuts off the communication of the intake gas circuit 20a; when the gas circuit device 100 is in the second state, the switching mechanism 70 cuts off the communication of the exhaust gas circuit 20b, so that the intake gas circuit 20a is in communication between the gas source and the upper chamber 203. By arranging the switching mechanism 70, the second gas circuit 20 can be switched between the intake state and the exhaust state.

[0065] In some embodiments, the switching mechanism 70 comprises two-position three-way electromagnetic valves, the number of which is equal to and corresponds to the number of the second gas paths 20. The two-position three-way electromagnetic valves comprise a first interface, a second interface and a third interface, the first interface is in communication with the gas source, the second interface is in communication with the upper cavity 203, and the third interface is in communication with the external space. When the gas path device 100 is in the first state, the second interface is in communication with the third interface, so that the exhaust gas path 20b is in communication, and the communication of the intake gas path 20a is cut off, at this time, the gas in the upper cavity 203 can flow to the second interface, and be discharged to the outside through the third interface. When the gas path device 100 is in the second state, the first interface is in communication with the second interface, so that the intake gas path 20a is in communication, and the communication of the exhaust gas path 20b is cut off, at this time, the gas in the gas source can enter the second interface through the first interface, and enter the upper cavity 203 through the second interface.

[0066] In other embodiments, the switching mechanism 70 comprises two-position five-way electromagnetic valves, the number of which is equal to and corresponds to the number of the second gas paths 20. The two-position five-way electromagnetic valves also comprise a first interface, a second interface and a third interface, the first interface is in communication with the gas source, the second interface is in communication with the upper cavity 203, and the third interface is in communication with the external space. When the gas path device 100 is in the first state, the second interface is in communication with the third interface, so that the exhaust gas path 20b is in communication, and the communication of the intake gas path 20a is cut off, at this time, the gas in the upper cavity 203 can flow to the second interface, and be discharged to the outside through the third interface. When the gas path device 100 is in the second state, the first interface is in communication with the second interface, so that the intake gas path 20a is in communication, and the communication of the exhaust gas path 20b is cut off, at this time, the gas in the gas source can enter the second interface through the first interface, and enter the upper cavity 203 through the second interface.

[0067] It should be understood that in other embodiments, the switching mechanism 70 can also adopt other settings as long as the switching of the intake gas path 20a and the exhaust gas path 20b can be realized, which is not limited herein.

[0068] In some embodiments, continuing to refer to Figure 1 , the intake gas path 20a is provided with a pressure reducing valve 90, or the second communication pipeline 80 in communication with the gas source and the intake gas path 20a is provided with a pressure reducing valve 90. The pressure reducing valve 90 reduces the pressure of the gas flowing through the intake gas path 20a, that is, the pressure of the gas supplied to the upper cavity 203 can be reduced. Referring to Figure 4The piston 201 of the cylinder 200 is connected with the execution unit 300, and when the piston 201 rises or falls, the execution unit 300 can be driven to rise or fall to perform relevant operations. The execution unit 300 has a self-weight, and generally, the self-weight of the execution unit 300 is not much different from the jacking force of the high-pressure gas in the lower cavity 202 of the cylinder 200, so that the upper cavity 203 can make the piston 201 of the cylinder 200 fall when a very small gas pressure is required. By setting the pressure reducing valve 90, the gas pressure supplied to the upper cavity 203 can be reduced, and since the gas pressure is reduced, the gas consumption is reduced compared with the case without the pressure reducing valve 90, and energy is saved.

[0069] In some embodiments, the exhaust gas path 20b is provided with a second speed control valve 21 for throttling and speed control when the upper cavity 203 is exhausted.

[0070] In some embodiments, continuing to refer to Figure 1 The gas path device 100 further comprises a busbar 120 provided with an inlet channel and an exhaust channel. The inlet channels of the inlet gas paths 20a converge in the inlet channel, the inlet channel is in communication with the gas source, and the exhaust channels converge in the exhaust channel and are in communication with the outside through the exhaust channel. In this way, the gas in the gas source flows to the inlet channel, the inlet channel can distribute the gas to each inlet gas path 20a to facilitate the distribution of each gas path, and the gas in each upper cavity 203 can converge to the exhaust channel after flowing to the exhaust gas path 20b and then be exhausted to the outside through the exhaust channel to avoid the gas from escaping everywhere.

[0071] It is conceivable that in other embodiments, the gas path device 100 can also omit the busbar 120, which is not limited herein.

[0072] In some specific embodiments, the gas path device 100 further comprises a second communication pipeline 80 provided between the inlet channel and the gas source, and the pressure reducing valve 90 is provided on the second communication pipeline 80. Optionally, the second communication pipeline 80 is further provided with a gas pressure gauge 110 to monitor the pressure of the gas in the inlet gas path 20a.

[0073] It is conceivable that in other embodiments, the gas path device 100 can also omit the second communication pipeline 80, and in this case, the gas source is directly in communication with the inlet channel, and in this case, the pressure reducing valve 90 and the gas pressure gauge 110 are directly provided on the inlet gas path 20a.

[0074] Continuing to refer to Figure 1Another embodiment of the present application also provides an execution system 1000, which comprises a plurality of cylinder groups C, a plurality of execution units 300 and the above-mentioned gas circuit device 100. Each of the plurality of cylinder groups C comprises at least one cylinder 200, each of the at least one cylinder 200 is divided into an upper chamber 203 and a lower chamber 202 by a piston 201, and the first gas circuit group A, the second gas circuit group B, the cylinder group C and the execution unit 300 are arranged one by one in correspondence. All the pistons 201 comprised by each of the plurality of cylinder groups C are connected to the corresponding execution unit 300. When the gas circuit device 100 is in the first state, the lower chamber 202 of each cylinder 200 is inhaled, the upper chamber 203 is exhaled, and the piston 201 drives the execution unit 300 to rise; when the gas circuit device 100 is in the second state, the upper chamber 203 of each cylinder 200 is inhaled, the lower chamber 202 is exhaled, and the piston 201 drives the execution unit 300 to descend.

[0075] In some specific embodiments, referring to Figure 1 and Figure 4 , the execution system 1000 comprises 5 cylinder groups C and 5 execution units 300, each of the plurality of cylinder groups C comprises 2 cylinders 200, and each of the execution units 300 is connected to the pistons 201 of the 2 cylinders 200 of the cylinder group C. Correspondingly, the first gas circuit group A and the second gas circuit group B are both 5 groups, each of the first gas circuit group A comprises 2 first gas circuits 10, and each of the second gas circuit group B comprises 2 second gas circuits 20. Specifically, the 5 execution units are arranged in layers. In this way, the simultaneous work of the 5 execution units can be realized, so as to improve the work efficiency.

[0076] It is conceivable that in other embodiments, the number of the cylinder groups C, the first gas circuit group A and the second gas circuit group B is not limited, for example, the cylinder group C, the first gas circuit group A and the second gas circuit group B can also be arranged as 1 group, 2 groups, 3 groups, 4 groups or more than 5 groups. At the same time, the number of the cylinders 200 comprised by the cylinder group C, the number of the first gas circuits 10 comprised by the first gas circuit group A and the number of the second gas circuits 20 comprised by the second gas circuit group B are not limited, for example, each of the cylinder groups C can comprise 1 or more than 2 cylinders 200, each of the first gas circuit groups A can comprise 1 or more than 2 first gas circuits 10, and each of the second gas circuit groups B can comprise 1 or more than 2 second gas circuits 20.

[0077] In some embodiments, the execution system 1000 is a hot press, and the execution unit 300 is a hot press plate. When the hot press plate descends, the hot press plate can perform hot pressing on the battery cell, and when the hot press plate rises, the hot press plate releases the battery cell. It can be understood that in other embodiments, the type of the execution system 1000 is not limited.

[0078] The working principle of the gas circuit device 100 and the hot press provided by the embodiments of the present application is as follows:

[0079] The piston 201 rises (seeFigure 2

[0080] The two-position two-way electromagnetic valve as the intercepting valve 15 keeps the electric state, so that the gas can flow in the first gas circuit 10. The two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve as the switching mechanism 70 loses the electric state, and the second interface communicates with the third interface. The high-pressure gas enters the lower cavity 202 of the cylinder 200 from the gas source, the gas storage mechanism 30 and the first gas circuit 10. The gas in the upper cavity 203 of the cylinder 200 flows to the two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve after throttling and speed regulation by the second speed control valve 21, and is finally discharged from the exhaust passage of the busbar 120. Due to the intake of the lower cavity 202 and the exhaust of the upper cavity 203, the piston 201 rises to drive the hot pressing plate to rise and separate from the battery cell.

[0081] The piston 201 descends (see Figure 3

[0082] The two-position two-way electromagnetic valve as the intercepting valve 15 keeps the electric state, so that the gas can flow in the first gas circuit 10. The two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve as the switching mechanism 70 keeps the electric state, and the first interface communicates with the second interface. The high-pressure gas in the gas source is reduced to the adjusted value by the pressure reducing valve 90, flows to the two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve through the busbar 120, and finally enters the upper cavity 203 of the cylinder 200. The pilot-operated check valve 13 is controlled to open by the pilot gas connected to the second gas circuit 20 communicating with the upper cavity 203 of the cylinder 200 when the lower cavity 202 exhausts, and the gas in the lower cavity 202 of the cylinder 200 flows to the two-position two-way electromagnetic valve after throttling and speed regulation by the first speed control valve 12, and finally enters the gas storage mechanism 30 for storage. Due to the intake of the lower cavity 202 and the exhaust of the upper cavity 203, the piston 201 descends to drive the hot pressing plate to descend and heat press the battery cell.

[0083] It should be noted that when the lower cavity 202 first intakes the gas, the high-pressure gas enters the lower cavity 202 from the gas source, the gas storage mechanism 30 and the first gas circuit 10. After the upper cavity 203 first intakes the gas, the gas in the lower cavity 202 flows to the gas storage mechanism 30 for storage. The gas in the lower cavity 202 for the second time intakes the gas from the gas storage mechanism 30. The first check valve 50 can be used to supplement the gas when the gas in the gas storage mechanism 30 is insufficient.

[0084] The gas circuit device 100 and the hot pressing machine provided by the embodiment of the present application at least have the following beneficial effects:

[0085] 1. The gas circuit device 100 is provided with the gas storage mechanism 30, and the gas discharged from the lower cavity 202 can be stored in the gas storage mechanism 30, so that the high-pressure gas can be recycled and reused, the consumption of the gas is reduced, and the energy is saved.

[0086] ​​2. The hot press plate has its own weight. The weight of the hot press plate is not much different from the lifting force of the high-pressure gas in the lower chamber 202 of the cylinder 200. Therefore, the upper chamber 203 only requires a very small air pressure to make the piston 201 of the cylinder 200 descend. By setting the pressure reducing valve 90, the gas pressure supplied to the upper chamber 203 can be reduced, so that the difference between the weight of the hot press plate and the lifting force of the lower chamber 202 can be matched with a very small air pressure, thus significantly reducing the consumption of high-pressure gas in the upper chamber 203.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An air path device characterized by comprising: include: The first air passage group (A) includes at least one first air passage (10), and each first air passage (10) is connected to the lower chamber (202) of a cylinder (200) of its corresponding cylinder group (C). A second air passage group (B) is provided in a one-to-one correspondence with the first air passage group (A). The number of second air passages (20) included in each second air passage group (B) is equal to the number of first air passages (10) included in the corresponding first air passage group (A). The second air passage (20) is connected to the upper cavity (203) of the cylinder (200) connected to the corresponding first air passage (10). The gas storage mechanism (30) is connected to each of the first gas passages (10); The gas path device has a first state and a second state. When the gas path device is in the first state, the gas enters the lower chamber (202) through the gas storage mechanism (30) and the first gas path (10), and the gas in the upper chamber (203) is discharged through the second gas path (20). When the gas path device is in the second state, the gas enters the upper chamber (203) through the second gas path (20), and the gas in the lower chamber (202) flows to the gas storage mechanism (30) through the first gas path (10) for storage.

2. The air path device according to claim 1, characterized by, Each of the first air passages (10) is equipped with an electric proportional valve (11), a first speed control valve (12), a pilot-operated check valve (13), and a manually controlled pressure relief valve (14); The electric proportional valve (11) is used to regulate the intake pressure of the gas entering the lower chamber (202), the first speed control valve (12) is used for throttling speed regulation when the lower chamber (202) is venting, the pilot-operated check valve (13) is opened by the pilot gas connected to the upper chamber (203) for venting the lower chamber (202), and the manual pressure relief valve (14) is used to manually discharge the residual gas in the lower chamber (202) during debugging.

3. The air path device according to claim 2, wherein Each first air passage group (A) includes a main passage (16) and at least two branch passages (17), the number of which is equal to the number of cylinders (200) included in each cylinder group (C); One end of the main circuit (16) is connected to the gas storage mechanism (30), and one end of each branch circuit (17) is connected to the other end of the main circuit (16) and a lower cavity (202); The electric proportional valve (11) is installed on the main circuit (16), and each branch circuit (17) is provided with the first speed control valve (12), the pilot-operated check valve (13) and the manual pressure relief valve (14); Each of the first gas passages (10) includes the main passage (16) and one of the branch passages (17).

4. The air path device according to claim 1, wherein Each of the first gas passages (10) is provided with a shut-off valve (15), which is used to allow gas to flow in the first gas passage (10) or to cut off the flow of gas in the first gas passage (10).

5. The air path device according to claim 4, wherein The shut-off valve (15) is a two-position two-way solenoid valve located on the first air passage (10).

6. The air path device according to claim 1, wherein The gas path device further comprises a first communication pipeline (40) and a first one-way valve (50), the first communication pipeline (40) is communicated between the gas source and the gas storage mechanism (30), and the first one-way valve (50) is arranged on the first communication pipeline (40) to allow the gas to flow from the gas source to the gas storage mechanism (30); And / or The gas path device further comprises an exhaust valve (60) connected with the gas storage mechanism (30) to exhaust the residual gas in the gas storage mechanism (30) during debugging.

7. The air path device according to claim 1, wherein The gas path device further comprises a switching mechanism (70), and each of the second gas paths (20) comprises an intake gas path (20a) and an exhaust gas path (20b); When the gas path device is in the first state, the switching mechanism (70) communicates the exhaust gas path (20b) and cuts off the communication of the intake gas path (20a); when the gas path device is in the second state, the switching mechanism (70) cuts off the communication of the exhaust gas path (20b) and communicates the intake gas path (20a) between the gas source and the upper cavity (203).

8. The air path device according to claim 7, wherein A pressure reducing valve (90) is arranged on the intake gas path (20a) or a second communication pipeline (80) communicated between the gas source and the intake gas path (20a) is provided with a pressure reducing valve (90); And / or A second speed control valve (21) is arranged on the exhaust gas path (20b) to throttle and regulate the speed when the upper cavity (203) exhausts.

9. The air path device according to claim 7, wherein The switching mechanism (70) comprises a two-position three-way electromagnetic valve or a two-position five-way electromagnetic valve, a first interface of the two-position three-way electromagnetic valve or the two-position five-way electromagnetic valve is communicated with the gas source, a second interface is communicated with the upper cavity (203), and a third interface is communicated with an external space; When the gas path device is in the first state, the second interface is communicated with the third interface to communicate the exhaust gas path (20b) and cut off the communication of the intake gas path (20a); when the gas path device is in the second state, the first interface is communicated with the second interface to communicate the intake gas path (20a) and cut off the communication of the exhaust gas path (20b).

10. The air path device according to claim 1, wherein Each of the second gas paths (20) comprises an intake gas path (20a) and an exhaust gas path (20b); when the gas path device is in the first state, the exhaust gas path (20b) is communicated and the intake gas path (20a) is cut off; when the gas path device is in the second state, the intake gas path (20a) is communicated between the gas source and the upper cavity (203), and the exhaust gas path (20b) is cut off; The gas path device comprises a bus bar (120) provided with an intake passage and an exhaust passage; Each of the intake gas paths (20a) converges in the intake passage, the intake passage is communicated with the gas source, and each of the exhaust gas paths (20b) converges in the exhaust passage and is communicated with the external space through the exhaust passage.

11. An execution system, comprising: The gas path device comprises a cylinder group (C), an execution unit (300) and the gas path device according to any one of claims 1-10. Each of the cylinder groups (C) comprises at least one cylinder (200), each of the cylinders (200) being divided by a piston (201) into an upper chamber (203) and a lower chamber (202), the first gas path group (A), the second gas path group (B), the cylinder groups (C) and the execution units (300) being arranged in one-to-one correspondence; All of the pistons (201) of each of the cylinder groups (C) are connected to the execution units (300) corresponding thereto.

12. The execution system of claim 11, wherein, The execution system is a hot press, and the execution units (300) are hot press plates.

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