Heavy-load electromagnetic lock for guaranteeing safety of energy storage container product

Abstract

The utility model discloses a heavy-load electromagnetic lock for guaranteeing the safety of an energy storage container product. The heavy-load electromagnetic lock comprises an electromagnetic driving assembly, a limiting block and a lock catch, the electromagnetic driving assembly can release the limiting block after being powered on so that the limiting block can reach the open state, and the lock catch can be released when the limiting block is in the open state. The device further comprises a microswitch. The microswitch is a single-pole double-throw switch and comprises a movable contact, a normally closed contact and a normally open contact; the normally-closed contact is connected with the positive electrode of a power supply, the movable contact is connected with a coil pin 1 of the electromagnetic driving assembly, and a coil pin 2 of the electromagnetic driving assembly is connected with the negative electrode of the power supply; when the limiting block is in a closed state, the movable contact of the microswitch is connected with the normally-closed contact, and the coil of the electromagnetic driving assembly can be powered on to work after being powered on. The power-off protection function is added, and the electromagnetic lock can be prevented from being burnt out due to long-time electrification.

Description

Technical Field

[0001] The utility model relates to an electromagnetic lock, in particular to a large-load electromagnetic lock for ensuring the safety of energy storage container products. Background Art

[0002] In the energy storage industry of new energy, there is a risk of battery thermal runaway and abnormal temperature rise during the operation of the battery on the energy storage product, which may lead to battery deflagration and explosion. In order to avoid or reduce similar risks, a new solution is introduced on the basis of the existing technology. The focus of this new solution is to introduce a new electromagnetic lock with high safety and reliability on the exhaust valve. The BMS system of the energy storage product can obtain the working environment parameters through the sensor, so that it can determine when to send a signal that can drive the electromagnetic lock to open automatically according to the real-time working environment, so as to control the opening of the exhaust valve, which can help the energy storage product to exhaust and release pressure; to ensure the safety of the energy storage product. However, the electromagnetic locks on the existing market have the following shortcomings: 1. The electromagnetic lock power-on duration requirements are relatively strict, and a single power-on cannot exceed 1s, otherwise the coil is easy to burn out, resulting in damage to the electromagnetic lock. 2. The load is small, and it is easy to fail to open the electromagnetic lock when the load is unstable. 3. The installation requires a lock bracket to install, which is time-consuming and labor-intensive, and uneconomical.

[0003] In view of the above shortcomings of the existing electromagnetic lock technology on the market, a new electromagnetic lock that can solve the above problems is urgently needed to meet the market demand. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a large-load electromagnetic lock for ensuring the safety of energy storage container products, and adds a power-off protection function to prevent the electromagnetic lock from being burned out due to long-term power-on.

[0005] The technical solution of the utility model is: a large-load electromagnetic lock for ensuring the safety of energy storage container products, comprising an electromagnetic drive component, a limit block and a lock buckle; the electromagnetic drive component can release the limit block after power is turned on so that the limit block can reach an open state, and the lock buckle can be released when the limit block is in the open state;

[0006] Also includes micro switches;

[0007] The micro switch is a single-pole double-throw switch, including a moving contact, a normally closed contact and a normally open contact; the normally closed contact is connected to the positive pole of the power supply, the moving contact is connected to the coil 1 pin of the electromagnetic drive component, and the coil 2 pin of the electromagnetic drive component is connected to the negative pole of the power supply;

[0008] When the limit block is in the closed state, the moving contact and the normally closed contact of the micro switch are connected, and the coil of the electromagnetic drive component can be energized and work after the power is turned on; when the limit block is in the open state, the limit block triggers the micro switch to disconnect the moving contact and the normally closed contact, thereby cutting off the power to the coil of the electromagnetic drive component.

[0009] Furthermore, the moving contact and the normally open contact are connected to signal lines respectively. When the limit block is in the open state, the moving contact and the normally open contact are connected, and the signal line is turned on.

[0010] Furthermore, it also includes an outer shell, and a screw installation position is respectively arranged on the left and right side surfaces of the outer shell, and the large-load electromagnetic lock can be directly installed on the corresponding valve seat by passing the screw through the screw installation position. For the electromagnetic lock currently installed in the market mainly through two lock brackets, the current structure can save the previous lock bracket, making assembly simpler and saving more costs.

[0011] Furthermore, it also includes a blocking rod, wherein the middle portion of the blocking rod is rotatably fixed to the inner side of the housing, the top of the blocking rod is connected to the movable shaft of the electromagnetic drive assembly, and the coil of the electromagnetic drive assembly can drive the top of the blocking rod to move toward a side close to the electromagnetic drive assembly after being energized;

[0012] A reset spring is arranged between the top of the barrier rod and the main body of the electromagnetic drive assembly, which can automatically reset itself when the external force disappears after the bottom of the barrier rod is subjected to an external force so that the top of the barrier rod moves toward the side close to the electromagnetic drive assembly;

[0013] The bottom of the barrier rod is configured as a hook structure;

[0014] The limit block is in a U-shaped structure, and the top of the U-shaped structure is the opening of the limit block. The arc-shaped part of the bottom of the U-shaped structure is fixed to the inner side surface of the shell by a torsion spring, so that the limit block can be opened downward in an open state to release the lock buckle when not subject to external force; when the lock buckle is inserted into the opening of the limit block and pushes the limit block to rotate, one side arm of the U-shaped structure pushes the bottom of the baffle rod so that the top of the baffle rod moves toward the side close to the electromagnetic drive component, and after one side arm of the U-shaped structure rotates into the hook groove of the hook at the bottom of the baffle rod, the reset tower spring automatically resets, thereby driving the bottom of the baffle rod to reset so that the hook at the bottom of the baffle rod hooks the limit block, and the other arm of the U-shaped structure hooks the lock buckle.

[0015] Compared with the existing electromagnetic lock technology in the market, the electromagnetic lock of this utility model has the following advantages:

[0016] 1. The electromagnetic lock has added a power-off protection function to prevent the electromagnetic lock from being burned out due to long-term power supply. 2. The load unlocking force of the electromagnetic lock has been increased, which can reduce the problem that the electromagnetic lock cannot be opened due to heavy load. 3. Two screw mounting positions are added to the outer cover of the electromagnetic lock, and the electromagnetic lock can be directly installed on the corresponding valve seat. For the electromagnetic lock that is currently installed on the market mainly through two lock brackets, the current structure can save the previous lock bracket, making assembly simpler and more cost-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Cross-section of a heavy-duty electromagnetic lock used to ensure the safety of energy storage container products;

[0018] Figure 2 A disassembled diagram of a heavy-load electromagnetic lock to ensure the safety of energy storage container products;

[0019] Figure 3 Electrical schematic diagram of heavy-load electromagnetic lock to ensure the safety of energy storage container products;

[0020] Figure 4 Schematic diagram of the opening process of a large-load electromagnetic lock to ensure the safety of energy storage container products;

[0021] Figure 5 Schematic diagram of the open state of the large-load electromagnetic lock to ensure the safety of energy storage container products;

[0022] Figure 6 Schematic diagram of the closing process of a heavy-load electromagnetic lock to ensure the safety of energy storage container products;

[0023] Figure 7 Schematic diagram of the closed state of a heavy-load electromagnetic lock to ensure the safety of energy storage container products;

[0024] Figure 8 Front view of the heavy-load electromagnetic lock used to ensure the safety of energy storage container products.

[0025] In the figure: the stop rod 1, the reset tower spring 2, the electromagnetic drive assembly 3, the micro switch 4, the torsion spring 5, the limit block 6, the lock 7, the front cover 8, the signal interface 9, the power interface 10, the rear cover 11 and the screw installation position 12. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1 , 2As shown, a large-load electromagnetic lock for ensuring the safety of energy storage container products includes a stopper 1, a reset tower spring 2, an electromagnetic drive assembly 3, a micro switch 4, a torsion spring 5, a limit block 6, a lock buckle 7, a front cover 8, a signal interface 9, a power interface 10, a rear cover 11 and a screw installation position 12. The specific assembly is as follows: the stopper 1, the limit block 6, the micro switch 4, and the electromagnetic drive assembly 3 are fixed on the rear cover 11. The stopper 1 is connected to the electromagnetic drive assembly 3, and the reset tower spring 2 is installed at the front end of the electromagnetic drive assembly 3. The limit block 6 is connected to the torsion spring 5. The signal interface 9 and the power interface 10 are connected to the electromagnetic drive assembly 3 and the micro switch 4 through wires. The front cover 8 is fixed to the rear cover 11 by screws. The lock buckle 7 can be fixed by the limit block 6.

[0028] The electromagnetic drive assembly 3 can release the limit block 6 after being energized so that the limit block 6 can reach an open state, and the limit block 6 can release the lock buckle 7 when it is in the open state.

[0029] Specifically, the middle part of the baffle rod 1 is rotatably fixed on the inner side surface of the outer shell, and the top of the baffle rod 1 is connected to the movable shaft of the electromagnetic drive assembly 3. After the coil of the electromagnetic drive assembly 3 is energized, it can drive the top of the baffle rod 1 to move toward the side close to the electromagnetic drive assembly 3. A reset tower spring 2 is arranged between the top of the baffle rod 1 and the main body of the electromagnetic drive assembly 3, which can automatically reset when the external force disappears after the bottom of the baffle rod 1 is subjected to an external force so that the top of the baffle rod 1 moves toward the side close to the electromagnetic drive assembly 3. The bottom of the baffle rod 1 is arranged as a hook structure. The limit block 6 is a U-shaped structure, and the top of the U-shaped structure is the opening of the limit block 6. The arc-shaped part of the bottom of the U-shaped structure is fixed to the inner side surface of the outer shell by a torsion spring 5, so that the limit block 6 can be opened downward in an open state to release the lock buckle 7 when not subjected to external force. When the lock catch 7 is inserted into the opening of the limit block 6 and pushes the limit block 6 to rotate, one side arm of the U-shaped structure pushes the bottom of the blocking rod 1 so that the top of the blocking rod 1 moves toward the side close to the electromagnetic drive assembly 3, and after one side arm of the U-shaped structure rotates into the hook groove of the hook at the bottom of the blocking rod 1, the reset tower spring automatically resets to drive the bottom of the blocking rod 1 to reset so that the hook at the bottom of the blocking rod 1 hooks the limit block 6, and the other arm of the U-shaped structure hooks the lock catch 7. It is ensured that the lock catch 7 of the electromagnetic lock will not fall off the limit block 6 when loaded.

[0030] like Figure 4 , 5As shown, the opening process ABCD of the electromagnetic lock: when the electromagnetic drive component 3 is powered by the power interface 10, the electromagnetic drive component 3 will drive the barrier rod 1 to rotate clockwise in the figure with the rotation center. At this time, the limit block 6 rotates counterclockwise in the figure under the action of the torsion spring 5 and turns to the open position, so that the lock buckle 7 can be disengaged from the limit block 6, that is, the electromagnetic lock can be opened.

[0031] like Figure 6 , 7 As shown, the closing process of the electromagnetic lock is ABCD: the lock buckle 7 is pressed upward into the corresponding lock slot. At this time, the limit block 6 rotates clockwise in the direction shown in the figure. The blocking rod 1 first rotates clockwise for a certain distance and then rotates counterclockwise for a certain angle driven by the elastic force of the reset tower spring 2. At this time, the blocking rod 1 will jam the limit block 6 so that it cannot rotate counterclockwise, so that the lock buckle 7 is fixed in the position shown in the figure.

[0032] like Figure 3 As shown, the micro switch 4 is a single-pole double-throw switch, including a moving contact, a normally closed contact and a normally open contact. The normally closed contact is connected to the positive pole of the power supply, the moving contact is connected to the coil 1 pin of the electromagnetic drive component 3, and the coil 2 pin of the electromagnetic drive component 3 is connected to the negative pole of the power supply. The power supply adopts a 24V power supply.

[0033] When the limit block 6 is in the closed state, the moving contact of the micro switch 4 is connected to the normally closed contact, and the coil of the electromagnetic drive component 3 can be powered on and work after the power is turned on. When the limit block 6 is in the open state, the limit block 6 triggers the micro switch 4 to disconnect the moving contact and the normally closed contact, thereby disconnecting the power of the coil of the electromagnetic drive component 3. The moving contact and the normally open contact are respectively connected to the signal line. When the limit block 6 is in the open state, the moving contact and the normally open contact are connected, and the signal line is turned on.

[0034] The electromagnetic lock of this new structure has the function of protecting the electromagnetic lock coil, avoiding the coil from burning out due to long-term power-on. The two wires of the electromagnetic coil on the market are directly connected to the power supply, but now one wire is connected to the power supply and the other wire is connected to the normally closed contact of a micro switch. When the electromagnetic lock is powered on, the barrier rod 1 rotates, the lock buckle 7 disengages from the limit block 6, the normally closed contact of the micro switch 4 is disconnected, and the coil is powered off. At this time, even if the external voltage continues to be applied to the electromagnetic lock coil, since the switch has been disconnected, there is no voltage on the coil, thereby protecting the electromagnetic lock from burning out due to long-term power-on.

[0035] The electromagnetic lock with new structure has increased load unlocking force. Now the load unlocking force of electromagnetic locks on the market is mostly below 5Kgf at 15V voltage. The diameter of the coil skeleton of the new electromagnetic lock has been increased. By changing the wire diameter of the coil copper wire, the magnetic force generated by the coil is increased under the same voltage condition, thereby improving the thrust of the iron core in the coil bracket, thus increasing the unlocking force. The load unlocking force of the new structure electromagnetic lock can currently reach a load unlocking force greater than 15Kgf at 15V voltage.

[0036] The front cover 8 is fixed to the rear cover 11 by screws to form an outer shell. Figure 8 As shown, a screw installation position 12 is respectively provided on the left and right side surfaces of the outer shell, and the heavy-load electromagnetic lock can be directly installed on the corresponding valve seat by passing the screws through the screw installation positions. The installation method of the electromagnetic lock on the exhaust valve is: first fit the protruding support positions on both sides of the electromagnetic lock with the exhaust valve base, then align the holes on the support positions with the corresponding screw positions on the valve seat, and tighten the two fastening screws respectively, so that the electromagnetic lock can be smoothly installed on the exhaust valve. For the electromagnetic lock that is currently installed on the market mainly through two lock brackets, the current structure can save the previous lock bracket, making assembly simpler and more cost-saving.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A large-load electromagnetic lock for ensuring the safety of energy storage container products, comprising an electromagnetic drive component (3), a limit block (6) and a lock buckle (7); the electromagnetic drive component (3) can release the limit block (6) after power is turned on so that the limit block (6) can reach an open state, and the limit block (6) can release the lock buckle (7) when it is in the open state; Features: Also includes a micro switch (4); The micro switch (4) is a single-pole double-throw switch, comprising a moving contact, a normally closed contact and a normally open contact; the normally closed contact is connected to the positive pole of the power supply, the moving contact is connected to the coil 1 pin of the electromagnetic drive component (3), and the coil 2 pin of the electromagnetic drive component (3) is connected to the negative pole of the power supply; When the limit block (6) is in a closed state, the moving contact of the micro switch (4) is connected to the normally closed contact, and the coil of the electromagnetic drive component (3) can be powered on and work after the power is turned on; when the limit block (6) is in an open state, the limit block (6) triggers the micro switch (4) so ​​that the moving contact and the normally closed contact are disconnected, thereby de-energizing the coil of the electromagnetic drive component (3).

2. A large-load electromagnetic lock for ensuring the safety of energy storage container products according to claim 1, characterized in that: The moving contact and the normally open contact are respectively connected to signal lines. When the limit block (6) is in an open state, the moving contact and the normally open contact are connected and the signal line is turned on.

3. A large-load electromagnetic lock for ensuring the safety of energy storage container products according to claim 1, characterized in that: It also includes an outer shell, and a screw installation position (12) is respectively arranged on the left and right side surfaces of the outer shell. The large-load electromagnetic lock can be directly installed on the corresponding valve seat by passing a screw through the screw installation position.

4. A large-load electromagnetic lock for ensuring the safety of energy storage container products according to claim 1, characterized in that: It also comprises a blocking rod (1), wherein the middle portion of the blocking rod (1) is rotatably fixed on the inner side of the outer shell, the top of the blocking rod (1) is connected to the movable shaft of the electromagnetic drive component (3), and the coil of the electromagnetic drive component (3) can drive the top of the blocking rod (1) to move toward a side close to the electromagnetic drive component (3) after being energized; A reset spring (2) is provided between the top of the blocking rod (1) and the main body of the electromagnetic drive assembly (3), and can automatically reset itself when the external force disappears after the bottom of the blocking rod (1) is subjected to an external force so that the top of the blocking rod (1) moves toward a side close to the electromagnetic drive assembly (3); The bottom of the barrier rod (1) is arranged as a hook structure; The limit block (6) is in a U-shaped structure, the top of the U-shaped structure is the opening of the limit block (6), and the arc-shaped portion of the bottom of the U-shaped structure is fixed to the inner side of the outer shell by a torsion spring (5), so that the limit block (6) can be opened downward in an open state to release the lock buckle (7) when not subjected to external force; when the lock buckle (7) is inserted into the opening of the limit block (6) and pushes the limit block (6) to rotate, one side arm of the U-shaped structure pushes the bottom of the blocking rod (1) so that the top of the blocking rod (1) moves toward the side close to the electromagnetic drive component (3), and after one side arm of the U-shaped structure rotates into the hook groove of the hook at the bottom of the blocking rod (1), the reset spring automatically resets, thereby driving the bottom of the blocking rod (1) to reset, so that the hook at the bottom of the blocking rod (1) hooks the limit block (6), and the other arm of the U-shaped structure hooks the lock buckle (7).

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