CN213845197U - Integrated upper-inlet and upper-outlet type circuit protection device - Google Patents
Integrated upper-inlet and upper-outlet type circuit protection device Download PDFInfo
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- CN213845197U CN213845197U CN202023116011.6U CN202023116011U CN213845197U CN 213845197 U CN213845197 U CN 213845197U CN 202023116011 U CN202023116011 U CN 202023116011U CN 213845197 U CN213845197 U CN 213845197U
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Abstract
The utility model provides an integrated upper-inlet and upper-outlet type circuit protection device, include: the circuit breaker unit and the self-healing overvoltage and undervoltage protection unit are arranged in the third shell; a first wire inlet end and a second wire outlet end are arranged on the third shell, the first wire inlet end is electrically connected with a first movable contact of the circuit breaker unit, the second wire outlet end is electrically connected with a second movable contact of the self-healing overvoltage and undervoltage protection unit, and the first wire inlet end and the second wire outlet end are positioned on the same side of the third shell; and the electrode of the circuit breaker unit is connected with the second stationary contact of the self-resetting overvoltage and undervoltage protection unit and the detection controller through leads. The utility model discloses having remain protect function, having solved the problem that first external connection occupy the valuable space, the leading-out terminal is direct to be connected external conductor or busbar from the top, can make the connection path of branch switch shortest, most direct, and does not occupy other valuable spaces of unnecessary, has that the line is simple, occupation space is little, the characteristics that the security is good.
Description
Technical Field
The utility model relates to an electrical switch control technical field especially relates to an integrated upper-inlet and upper-outlet type circuit protection device.
Background
In the prior art, as a circuit protection device, a circuit breaker is required to protect a circuit when overcurrent and short-circuit faults occur; to realize the protection of the circuit voltage over-voltage and under-voltage, a self-resetting over-voltage and under-voltage protector is used for protection.
Referring to fig. 1, the conventional circuit breaker includes a first housing 1, and a circuit breaker unit 100 disposed in the first housing 1, wherein the circuit breaker unit 100 includes: the device comprises a first contact actuating mechanism 4, a magnetic release 5, an electrode 6, an arc extinguishing cover 7 and a handle 8; the first contact action mechanism 4 includes a first stationary contact 401 and a first movable contact 402.
The two opposite sides of the first shell 1 are provided with a first incoming line end 2 and a first outgoing line end 3, the power incoming line 9 is connected to the first incoming line end 2, and the first outgoing line end 3 is connected to the branch switch 20 through a first external connection wire 10. The branch switch 20 includes other circuit breakers, surge protectors, earth leakage protection circuit breakers, and the like.
The first wire inlet end 2 is electrically connected with a first movable contact 402, the first fixed contact 401 is electrically connected with one end of an electromagnetic coil of the magnetic release 5, and the other end of the electromagnetic coil of the magnetic release 5 is electrically connected with the first wire outlet end 3 through an electrode 6.
When the handle 8 is pushed upward, the first contact operating mechanism 4 operates to bring the first stationary contact 401 into contact with the first movable contact 402, and at this time, power is output to the sub-switch 20 through the breaker unit 100.
When an overcurrent or short-circuit fault occurs in the line, the ejector rod of the magnetic release 5 acts to trigger the first contact action mechanism 4, so that the first fixed contact 401 and the first movable contact 402 are separated, and the line is disconnected.
Referring to fig. 2-4, the conventional self-resetting overvoltage/undervoltage protector has two types of structures, namely an upper-inlet lower-outlet type and a lower-inlet upper-outlet type.
Referring to fig. 2, the top-down-type self-healing overvoltage and undervoltage protection device includes a second housing 11, and a self-healing overvoltage and undervoltage protection unit 110 disposed in the second housing 11, where the self-healing overvoltage and undervoltage protection unit 110 includes: a magnetic latching relay 14, a magnetic actuator 15, a second contact actuator 16, and a detection controller 17; the second contact actuating mechanism 16 includes a second fixed contact 1601 and a second movable contact 1602.
A second wire inlet end 12 and a second wire outlet end 13 are arranged on two opposite sides of the second housing 11, the second wire inlet end 12 is connected with the first wire outlet end 3 of the circuit breaker through a first external connection wire 10, and the second wire outlet end 13 is connected into the tap switch 20 through a second external connection wire 22.
The second wire inlet end 12 is electrically connected with the second movable contact 1602, the second wire inlet end 12 is also electrically connected with a power supply end of the detection controller 17 through a conducting wire, a control end of the detection controller 17 is electrically connected with the magnetic latching relay 14 through a conducting wire, the magnetic latching relay 14 is contacted with the magnetic actuator 15, the magnetic actuator 15 is contacted with the second contact actuating mechanism 16, and the second fixed contact 1601 is electrically connected with the second wire outlet end 13.
When the line is normal, the second incoming line terminal 12 is electrically connected to a power supply terminal of the detection controller 17, the detection controller 17 sends a control signal to the latching relay 14, and an electromagnetic coil of the latching relay 14 generates a magnetic field to rotate the magnetic actuator 15, so as to drive the second contact actuating mechanism 16, so that the second fixed contact 1601 is in contact with the second movable contact 1602, and finally the circuit is closed. After the circuit is closed, the detection controller 17 stops the output of the control signal, and the magnetic latching relay 14 keeps the magnetic actuator 15 in the contact-closing operation direction by its own state holding function, so that the circuit is kept closed with the second fixed contact 1601 and the second movable contact 1602 kept in contact with each other.
When an undervoltage or overvoltage fault occurs, the detection controller 17 sends a reverse control signal to the magnetic latching relay 14, so that the electromagnetic coil of the magnetic latching relay 14 generates a reverse magnetic field, the magnetic actuator 15 generates reverse rotation, the contact actuating mechanism 16 is driven, the second fixed contact 1601 is separated from the second movable contact 1602, and finally the circuit is disconnected. After the circuit is opened, the detection controller 17 stops the output of the reverse control signal, and the magnetic latching relay 14 keeps the magnetic actuator 15 in the contact separating operation direction by its own state holding function, so that the circuit is kept opened with the posture of the second fixed contact 1601 separated from the second movable contact 1602 unchanged.
Referring to fig. 3, the structure and the working principle of the lower-inlet and upper-outlet self-healing overvoltage and undervoltage protector are basically the same, and the only difference is that the second inlet terminal 12 of the lower-inlet and upper-outlet self-healing overvoltage and undervoltage protector is electrically connected to the second stationary contact 1601 and the power supply terminal of the detection controller 17, and the second outlet terminal 13 is electrically connected to the second movable contact 1602.
Referring to fig. 5, taking bipolar as an example, the circuit breaker unit 100 and the self-healing undervoltage protection unit 110 are independent electrical protection devices, and can be used alone or in combination. When the circuit breaker is used in a combined mode, the circuit breaker is usually arranged at the front end, the self-recovery type over-voltage and under-voltage protector is arranged at the rear end, a series connection relation is formed, and the series combination achieves over-current, short circuit, under-voltage and over-voltage protection control over a circuit.
Referring to fig. 6, the circuit breaker and the self-healing overvoltage/undervoltage protector must be connected by an external circuit, specifically, the first incoming line terminal 2 is connected to the power incoming line 9, the first outgoing line terminal 3 is connected to the second incoming line terminal 12, and the second outgoing line terminal 13 is connected to the tap switch 20 through the second external connection 22. The disadvantages of this approach are high cost of connection lines, high cost of connection time, large manual differentiation of connections, high cost of occupied space, low production efficiency, multiple movable contacts, poor stability of connection points, exposed wires, and low electrical stability.
Referring to fig. 7, when the self-resetting overvoltage/undervoltage protector is in an up-in and down-out mode, the lower first wire outlet end 3 is connected to the upper second wire inlet end 12, and then is connected to the rear branch switch 20 through the second wire outlet end 13 after passing through the interior of the self-resetting overvoltage/undervoltage protector.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art, an object of the present invention is to provide an integrated upward-going circuit protection device for solving the problem that the respective incoming line end and outgoing line end of the circuit breaker unit and the undervoltage protection unit in the prior art are located in the two sides of the casing, resulting in high cost of the connection line, high cost of the connection time, large manual differentiation of the connection, high space occupation cost, low production efficiency, easy wrong connection of the ports, and poor stability of the connection points.
To achieve the above and other related objects, the present invention provides an integrated top-loading and top-discharging circuit protection device, comprising: the circuit breaker unit and the self-healing overvoltage and undervoltage protection unit are arranged in the third shell;
the circuit breaker unit and the self-resetting overvoltage and undervoltage protection unit are positioned on the same horizontal plane;
a first wire inlet end and a second wire outlet end are arranged on the third shell, the first wire inlet end is electrically connected with a first movable contact of the circuit breaker unit, the second wire outlet end is electrically connected with a second movable contact of the self-healing overvoltage and undervoltage protection unit, and the first wire inlet end and the second wire outlet end are positioned on the same side of the third shell;
the electrode of the circuit breaker unit is connected with the second stationary contact of the self-resetting overvoltage and undervoltage protection unit and the detection controller through leads
In an embodiment of the present invention, the height difference between the first wire inlet end and the second wire outlet end to the bottom of the third housing is the same.
In an embodiment of the present invention, the first line inlet end is provided with a line pressing frame, the line pressing frame of the first line inlet end is electrically connected to the first movable contact of the circuit breaker unit, and the external power line inlet is crimped into the line pressing frame of the first line inlet end.
In an embodiment of the present invention, the second wire-leading end is provided with a wire-pressing frame, the wire-pressing frame of the second wire-leading end is electrically connected to the second moving contact of the self-healing overvoltage protection unit, and the first external wire is pressed into the wire-pressing frame of the second wire-leading end.
In an embodiment of the present invention, the integrated top-in and top-out circuit protection device is a bipolar or quadrupole.
In an embodiment of the present invention, the number of the incoming line ends and the number of the outgoing line ends match with the number of poles of the integrated top-in top-out circuit protection device, and the incoming line ends correspond to the outgoing line ends one to one.
As described above, the integrated top-in and top-out circuit protection device of the present invention has the following beneficial effects: the circuit breaker and the self-recovery overvoltage and undervoltage protector which are independent of each other in the prior art are arranged in a shell, only one group of wire inlet ends and one group of wire outlet ends are reserved, the overcurrent, short circuit, overvoltage and undervoltage protection functions of the circuit breaker and the self-recovery overvoltage and undervoltage protector in the prior art are reserved, a first external wiring of a split type device is removed, and the problem that the first external wiring occupies valuable space is solved. In addition, the wire inlet end and the wire outlet end are arranged on the same side of the shell, and the wire outlet end is directly connected with an external lead or a bus bar from the upper part, so that the connection path to the branch switch is shortest and most direct, unnecessary other precious space is not occupied, and the multifunctional switch has the characteristics of simple connection, small occupied space, high attractiveness, low cost and high safety.
Drawings
Fig. 1 is a sectional view showing an internal structure of a circuit breaker disclosed in the related art.
Fig. 2 shows a front structural sectional view of an up-down self-resetting overvoltage/undervoltage protector disclosed in the prior art.
Fig. 3 shows a front structural sectional view of a lower-in upper-out self-resetting overvoltage and undervoltage protector disclosed in the prior art.
Fig. 4 shows a cross-sectional view of a self-resetting overvoltage/undervoltage protector disclosed in the prior art.
Fig. 5 is a schematic perspective view of a circuit breaker and a self-healing overvoltage/undervoltage protector disclosed in the prior art.
Fig. 6 is a schematic wiring diagram of a circuit breaker and a lower-in and upper-out self-healing overvoltage and undervoltage protector disclosed in the prior art.
Fig. 7 shows a wiring diagram of the circuit breaker and the top-down self-resetting overvoltage and undervoltage protector disclosed in the prior art.
Fig. 8 is a sectional view showing an internal structure of a circuit breaker unit disclosed in an embodiment of the present invention.
Fig. 9 is a front structural cross-sectional view of a self-recovery overvoltage/undervoltage protection unit disclosed in an embodiment of the present invention.
Fig. 10 is a cross-sectional view of a self-recovery overvoltage/undervoltage protection unit according to an embodiment of the present invention.
Fig. 11 is a cross-sectional view showing the internal structure of the circuit connection when the bipolar circuit breaker unit disclosed in the embodiment of the present invention is matched with the bipolar self-recovery overvoltage/undervoltage protection unit.
Fig. 12 is a schematic perspective view of a bipolar integrated top-in and top-out circuit protection device disclosed in an embodiment of the present invention.
Fig. 13 is a schematic diagram illustrating an internal power connection of the bipolar integrated upper-inlet and upper-outlet circuit protection device disclosed in the embodiment of the present invention.
Fig. 14 is a schematic perspective view of a quadrupole integrated top-in and top-out circuit protection device disclosed in an embodiment of the present invention.
Fig. 15 is a schematic diagram illustrating the connection of the integrated top-in and top-out circuit protection device and the branch switch disclosed in the embodiment of the present invention.
Element number description:
1-a first housing; 2-a first incoming line end; 3-a first outlet terminal; 4-a first contact actuation mechanism; 5-magnetic release; 6-an electrode;
7-arc extinguishing chamber; 8-a handle; 9-power supply inlet wire; 10-a first external connection; 401 — a first stationary contact; 402-a first movable contact;
11-a second housing; 12-a second incoming line end; 13-a second outlet terminal; 14-a magnetic latching relay; 15-magnetic actuator;
16-a second contact actuation mechanism; 17-a detection controller; 18-a third housing;
19-integrated upper-in and upper-out type circuit protection device; 20-a branch switch; 22-a second external connection; 100-a circuit breaker unit;
110-self-healing over-voltage and under-voltage protection unit; 1601 — a second stationary contact; 1602-a second movable contact.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
Referring to fig. 8-15, the present invention provides an integrated top-in and top-out circuit protection device, comprising: a third casing 18, a circuit breaker unit 100 and a self-resetting overvoltage and undervoltage protection unit 110 which are arranged in the third casing 18; the third casing 18 is an insulating casing, and the circuit breaker unit 100 and the self-healing overvoltage and undervoltage protection unit 110 are located on the same horizontal plane.
For traditional circuit breaker and from the undervoltage protection ware of crossing of formula, the utility model discloses cross undervoltage protection ware with the circuit breaker with from the formula and locate a casing to adopt the wire connected mode with the power output end of circuit breaker and the power input end of crossing undervoltage protection ware from the formula, at casing internal connection, but their function does not change separately, to overcurrent, the short circuit function of circuit breaker, from overvoltage, the undervoltage protection function of crossing undervoltage protection ware of formula, all do not produce the variability influence, specific theory:
referring to fig. 12, the third shell 18 is provided with a first wire inlet end 2 and a second wire outlet end 13, the first wire inlet end 2 and the second wire outlet end 13 are disposed on the same side of the third shell 18, and the height difference between the first wire inlet end 2 and the bottom of the third shell 18 and the height difference between the second wire outlet end 13 and the bottom of the third shell 18 are the same.
Referring to fig. 8, the circuit breaker unit 100 includes a first contact actuating mechanism 4, a magnetic trip 5, an electrode 6, an arc extinguishing chamber 7, and a handle 8; the first contact action mechanism 4 includes a first stationary contact 401 and a first movable contact 402.
Referring to fig. 11, the first incoming line terminal 2 is electrically connected to the first moving contact 402, the first fixed contact 401 is connected to one end of the electromagnetic coil of the magnetic release 5, the other end of the electromagnetic coil of the magnetic release 5 is electrically connected to the electrode 6, and the electrode 6 is electrically connected to the second fixed contact 1601 and the power supply terminal of the detection controller 17 through wires.
Referring to fig. 9-10, the self-healing overvoltage/undervoltage protection unit 110 includes a magnetic latching relay 14, a magnetic actuator 15, a second contact actuator 16 and a detection controller 17; the second contact actuating mechanism 16 includes a second fixed contact 1601 and a second movable contact 1602.
Referring to fig. 11, the second stationary contact 1601 and the power supply terminal of the detection controller 17 are electrically connected to the electrode 6 through a conductive wire, the control terminal of the detection controller 17 is electrically connected to the magnetic latching relay 14 through a conductive wire, the magnetic latching relay 14 is in contact with the magnetic actuator 15, the magnetic actuator 15 is in contact with the second contact actuator 16, and the second moving contact 1602 is electrically connected to the second outlet terminal 13.
The first wire inlet end 2 and the second wire outlet end 13 are insulated from each other.
In actual use, when the handle 8 is pushed upwards, the first contact actuating mechanism 4 is actuated to make the first fixed contact 401 and the first movable contact 402 contact, and at this time, the power is output to the self-resetting overvoltage and undervoltage protection unit 110 through the circuit breaker unit 100.
The power supply is connected to a power supply end of the detection controller 17, the detection controller 17 sends a control signal to the magnetic latching relay 14, an electromagnetic coil of the magnetic latching relay 14 generates a magnetic field, the magnetic actuator 15 rotates to drive the second contact actuating mechanism 16, the second fixed contact 1601 is in contact with the second movable contact 1602, and finally the circuit is switched on. After the circuit is closed, the detection controller 17 stops the output of the control signal, and the magnetic latching relay 14 keeps the magnetic actuator 15 in the contact-closing operation direction by its own state holding function, so that the circuit is kept closed with the second fixed contact 1601 and the second movable contact 1602 kept in contact with each other.
When an overcurrent or short-circuit fault occurs in the line, the ejector rod of the magnetic release 5 acts to trigger the first contact action mechanism 4, so that the first fixed contact 401 and the first movable contact 402 are separated, and the line is disconnected.
When an undervoltage or overvoltage fault occurs, the detection controller 17 sends a reverse control signal to the magnetic latching relay 14, so that the electromagnetic coil of the magnetic latching relay 14 generates a reverse magnetic field, the magnetic actuator 15 generates reverse rotation, the contact actuating mechanism 16 is driven, the second fixed contact 1601 is separated from the second movable contact 1602, and finally the circuit is disconnected. After the circuit is opened, the detection controller 17 stops the output of the reverse control signal, and the magnetic latching relay 14 keeps the magnetic actuator 15 in the contact separating operation direction by its own state holding function, so that the circuit is kept opened with the posture of the second fixed contact 1601 separated from the second movable contact 1602 unchanged.
To continue, the first incoming line terminal 2 is provided with a wire frame that is electrically connected to the first movable contact 402 of the breaker unit 100, and the external power incoming line 9 is crimped into the wire frame.
The second outlet terminal 13 is also provided with a wire pressing frame, which is electrically connected to the second movable contact 1602 of the self-healing overvoltage/undervoltage protection unit 110, and an external wire or bus is pressed into the wire pressing frame.
It should be noted that, the integrated top-in and top-out circuit protection device of the present invention may be a dipole or quadrupole, the number of the inlet terminals and the outlet terminals matches with the number of poles of the integrated top-in and top-out circuit protection device, and the inlet terminals and the outlet terminals correspond to each other one by one.
Referring to fig. 12, when the bipolar structure is adopted, the number of the first wire inlet end 2 and the second wire outlet end 13 is 2.
One incoming line end and the corresponding outgoing line end are connected with the zero line, and the other incoming line end and the corresponding outgoing line end are connected with any one of the three phase lines.
Referring to fig. 14, when the number of the first wire inlet end 2 and the second wire outlet end 13 is four, the number is 4.
One incoming line end and the corresponding outgoing line end are connected with the zero line, and the other three incoming line ends and the corresponding outgoing line ends are respectively connected with 3 phase lines.
Referring to fig. 12-13, taking the bipolar as an example, the power is connected to the circuit breaker unit 100 through the power inlet wire 9, and then connected to the self-healing overvoltage and undervoltage protection unit 110 from the inside of the casing.
By adopting the scheme, the outlet end is directly connected with the external lead or the bus bar from the upper part, so that the connection path to the branch switch 20 is shortest and most direct, unnecessary other precious space is not occupied, and the novel multifunctional electric switch has the characteristics of simple connection, small occupied space, high attractiveness, low cost and good safety.
Referring to fig. 15, the integrated top-in and top-out circuit protection device 19 and the branch switch 20 are respectively provided from left to right; wherein, the number of the branch switches 20 may be plural.
The power inlet wire 9 is connected with the first wire inlet end 2 of the integrated upper-inlet and upper-outlet type circuit protection device 19, and the second wire outlet end 13 is connected with the wire inlet end of the branch switch 20 at the rear end through the first external wiring 10.
To sum up, the utility model discloses an integrated upper-inlet upper-outlet type circuit protection device, mutually independent circuit breaker unit among the prior art and from the undervoltage protection unit setting of crossing of formula are in a casing, only remain a set of inlet wire end and a set of leading-out terminal, have not only remained among the prior art circuit breaker unit and from the overcurrent, short circuit, overvoltage, the undervoltage protect function of crossing the undervoltage protection unit of formula, have still removed the first external connection of split type device, have solved the problem that first external connection took valuable space. In addition, the wire inlet end and the wire outlet end are arranged on the same side of the shell, and the wire outlet end is directly connected with an external lead or a bus bar from the upper part, so that the connection path to the branch switch is shortest and most direct, unnecessary other precious space is not occupied, and the multifunctional switch has the characteristics of simple connection, small occupied space, high attractiveness, low cost and high safety. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. An integrated top-in and top-out circuit protection device, comprising: the circuit breaker unit and the self-healing overvoltage and undervoltage protection unit are arranged in the third shell;
the circuit breaker unit and the self-resetting overvoltage and undervoltage protection unit are positioned on the same horizontal plane;
a first wire inlet end and a second wire outlet end are arranged on the third shell, the first wire inlet end is electrically connected with a first movable contact of the circuit breaker unit, the second wire outlet end is electrically connected with a second movable contact of the self-healing overvoltage and undervoltage protection unit, and the first wire inlet end and the second wire outlet end are positioned on the same side of the third shell;
and the electrode of the circuit breaker unit is connected with the second stationary contact of the self-resetting overvoltage and undervoltage protection unit and the detection controller through leads.
2. The integrated top-in and top-out circuit protection device of claim 1, wherein: the height difference from the first wire inlet end and the second wire outlet end to the bottom of the third shell is the same.
3. The integrated top-in and top-out circuit protection device of claim 1, wherein: the first wire inlet end is provided with a wire pressing frame, the wire pressing frame of the first wire inlet end is electrically connected with a first movable contact of the circuit breaker unit, and an external power supply wire is pressed into the wire pressing frame of the first wire inlet end.
4. The integrated top-in and top-out circuit protection device of claim 1, wherein: and a wire pressing frame is arranged at the second wire outlet end, the wire pressing frame at the second wire outlet end is electrically connected with a second movable contact of the self-healing overvoltage and undervoltage protection unit, and a first external wire is pressed in the wire pressing frame at the second wire outlet end.
5. The integrated top-in and top-out circuit protection device of claim 1, wherein: the integrated upper-inlet and upper-outlet type circuit protection device is a bipolar or quadrupole.
6. The integrated top-in and top-out circuit protection device of claim 5, wherein: the number of the wire inlet ends and the number of the wire outlet ends are matched with the number of poles of the integrated upper-inlet and upper-outlet type circuit protection device, and the wire inlet ends correspond to the wire outlet ends one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116011.6U CN213845197U (en) | 2020-12-22 | 2020-12-22 | Integrated upper-inlet and upper-outlet type circuit protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023116011.6U CN213845197U (en) | 2020-12-22 | 2020-12-22 | Integrated upper-inlet and upper-outlet type circuit protection device |
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| CN213845197U true CN213845197U (en) | 2021-07-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664542A (en) * | 2022-05-23 | 2022-06-24 | 深圳市斯比特电子有限公司 | Double-node safety protection's electric motor car is with filling electric pile potential equipment |
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2020
- 2020-12-22 CN CN202023116011.6U patent/CN213845197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664542A (en) * | 2022-05-23 | 2022-06-24 | 深圳市斯比特电子有限公司 | Double-node safety protection's electric motor car is with filling electric pile potential equipment |
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