阅读说明：本技术 一种具有互锁功能的非车载充电机 (Non-vehicle machine that charges with interlocking function ) 是由 王雪飞 施伟伟 周建伟 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种具有互锁功能的非车载充电机,包括充电机本体,所述充电机本体一端连接直流充电枪,充电机本体另一端通过转接连接器连接交流充电插座；所述直流充电枪、充电机本体、转接连接器以及交流充电插座均配有互锁开关,所有互锁开关串联连接成互锁回路,当所有互锁开关均处于闭合状态时,非车载充电机开始工作。本发明能够有效避免由于充电机意外插拔或者充电过程中充电机被意外打开等非正常情况所带来的人员触电危险,极大的保证充电的安全性和可靠性。(The invention discloses an off-board charger with an interlocking function, which comprises a charger body, wherein one end of the charger body is connected with a direct current charging gun, and the other end of the charger body is connected with an alternating current charging socket through a switching connector; the direct-current charging gun, the charger body, the adapter connector and the alternating-current charging socket are all provided with interlocking switches, all the interlocking switches are connected in series to form an interlocking loop, and when all the interlocking switches are in a closed state, the off-board charger starts to work. The invention can effectively avoid the danger of electric shock of personnel caused by abnormal conditions such as accidental plugging and unplugging of the charger or accidental opening of the charger in the charging process, and greatly ensure the safety and reliability of charging.)

1. The utility model provides an off-board machine that charges with interlocking function, is including charging machine body (2), its characterized in that: one end of the charger body (2) is connected with the direct-current charging gun (1), and the other end of the charger body (2) is connected with the alternating-current charging socket (4) through the adapter connector (3); the direct-current charging gun (1), the charger body (2), the adaptor connector (3) and the alternating-current charging socket (4) are all provided with interlocking switches, all the interlocking switches are connected in series to form an interlocking loop, and when all the interlocking switches are in a closed state, the off-board charger starts to work.

2. The off-board charger with the interlocking function according to claim 1, characterized in that: a third switch (31) is fixedly installed on a charger installation panel (21) of the charger body (2), and the third switch (31) is a self-resetting button switch which is normally disconnected.

3. The off-board charger with the interlocking function according to claim 2, characterized in that: the adapter connector (3) comprises an adapter connector socket end (32) and an adapter connector plug end (33), and the adapter connector socket end (32) is fixedly arranged on the charger mounting panel (21); the plug end (33) of the switching connector is mounted on the socket end (32) of the switching connector through a fastening screw (34), and when the plug end (33) of the switching connector and the socket end (32) of the switching connector are inserted in place, the fastening screw (34) is abutted against and triggers the third switch (31) to be in a switch-on state.

4. The off-board charger with the interlocking function according to claim 3, characterized in that: the mounting position of the third switch (31) corresponds to the mounting position of a fastening screw (34).

5. The off-board charger with the interlocking function according to claim 3, characterized in that: the adapter connector receptacle end (32) and the adapter connector plug end (33) transmit current through contact between the internal copper core pieces upon mating.

6. The off-board charger with the interlocking function according to claim 1, characterized in that: the interlocking switch on the charger body (2) is a second switch S2, the second switch S2 is arranged inside the charger body (2) and linked with a top cover of the charger body (2), and when the top cover of the charger body (2) is in an open state, the second switch S2 is disconnected.

7. The off-board charger with the interlocking function according to claim 1, characterized in that: the interlocking switch on the alternating current charging socket (4) is a fourth switch S4, the fourth switch S4 is linked with the plugged alternating current charging gun, and when the fourth switch S4 is in a closed state, the alternating current charging gun is locked by a lock pin of the fourth switch S4.

8. The off-board charger with the interlocking function according to claim 1, characterized in that: the interlocking switch in the direct current charging gun (1) is a first switch S1, and the first switch S1 adopts a locking in-place switch.

Technical Field

The invention belongs to the field of charging of new energy electric vehicles and other fields of large current power utilization, and particularly relates to an off-board charger with an interlocking function.

Background

In the field of charging new energy electric vehicles, an off-board charger product is more and more favored by users, wherein charging safety is the most concerned by users. The product contact failure or by unexpected plug easily produce generate heat or electrocute danger in the use, moreover, the machine that charges is opened by accident in the charging process, and personnel touch high-voltage live position, also can produce the danger of electrocuting. Furthermore, when the adaptor connector is fastened by a screw, there is an inevitable problem of whether the screw is tightened, and in many cases, even if the screw is not completely tightened, the adaptor connector may still be in a contact state, i.e., current or signal may still be transmitted; in this case, since the screw connection is not completely fastened, and the components of the adaptor connector are not completely fastened and mounted, the structure similar to the IP protection in the structural design of the connector may not play a role of protection, and once the protection fails, there is a danger of electric shock to personnel.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide an off-board charger with an interlocking function, which can solve the problem of charging safety and effectively ensure the safety and reliability of the power utilization process.

The technical scheme is as follows: the charger comprises a charger body, wherein one end of the charger body is connected with a direct current charging gun, and the other end of the charger body is connected with an alternating current charging socket through a switching connector; the direct-current charging gun, the charger body, the adapter connector and the alternating-current charging socket are all provided with interlocking switches, all the interlocking switches are connected in series to form an interlocking loop, and when all the interlocking switches are in a closed state, the off-board charger starts to work.

The third switch is a normally-off self-resetting button switch, and can be automatically compressed and then switched on when the fastening screw is pressed against the third switch, and can be automatically reset when the fastening screw leaves.

The adapter connector comprises an adapter connector socket end and an adapter connector plug end, and the adapter connector socket end is fixedly arranged on the charger mounting panel; the plug end of the adapter connector is mounted on the socket end of the adapter connector through a fastening screw, and when the plug end of the adapter connector and the socket end of the adapter connector are plugged in place, the fastening screw abuts against and triggers the third switch to be in a connected state, so that an IP protection structure in the adapter connector can play a role in protection.

The mounting position of the third switch corresponds to the mounting position of the fastening screw, so that the third switch can be just pressed when the fastening screw is fastened in place.

And after the socket end of the switching connector and the plug end of the switching connector are plugged, current is transmitted through the contact between the internal copper core pieces, so that the current transmission is realized.

The interlocking switch on the charger body is a second switch S2, the second switch S2 is arranged inside the charger body and linked with the top cover of the charger body, and when the top cover of the charger body is in an open state, the second switch S2 is disconnected, so that the electric shock hazard caused by the fact that people touch the high-voltage electrified part when the charger body is accidentally opened in the charging process is avoided.

The interlocking switch on the alternating current charging socket is a fourth switch S4, the fourth switch S4 is linked with the oppositely-inserted alternating current charging gun, and when the fourth switch S4 is in a closed state, the alternating current charging gun is locked by a lock pin of the fourth switch S4, so that the fourth switch and the oppositely-inserted alternating current charging gun can not be plugged and unplugged.

The inside interlock switch of direct current rifle that charges is first switch S1, and first switch S1 adopts the locking switch that targets in place, guarantees that direct current rifle that charges can't be extracted when first switch-on, guarantees to charge safety.

Has the advantages that: compared with the prior art, the invention has the beneficial effects that: (1) the problem of charging safety of a non-vehicle-mounted charger in the field of electric automobile charging can be solved, the interlocking switches are arranged on all components of the charger and are connected in series, and the non-vehicle-mounted charger can charge when all the interlocking ports are closed, so that the safety and the reliability of the electricity utilization process are effectively guaranteed; (2) the danger of electric shock of personnel caused by abnormal conditions such as accidental plugging and unplugging of the charger or accidental opening of the charger in the charging process can be effectively avoided, and the charging safety and reliability are greatly ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the adaptor connector of FIG. 1;

FIG. 3 is a circuit diagram of the interlock switches of the present invention;

fig. 4 is a cross-sectional view of the fastening screw joint of fig. 2.

Detailed Description

The invention is described in further detail below with reference to specific embodiments and the attached drawings.

As shown in fig. 1, the present invention includes a dc charging gun 1, a charger body 2, a adaptor connector 3, and an ac charging socket 4. One end of the charger body 2 is connected with the direct current charging gun 1, and the other end of the charger body 2 is connected with the alternating current charging socket 4 through the adapter connector 3. The dc charging gun 1, the charger body 2, the adaptor connector 3 and the ac charging socket 4 are all provided with an interlock switch, wherein the interlock switch inside the dc charging gun 1 is a first switch S1, and in this embodiment, the first switch S1 is a lock-in-place switch. The interlocking switch on the charger body 2 is a second switch S2, the second switch S2 is arranged inside the charger body 2 and linked with the top cover of the charger body 2, and when the top cover of the charger body 2 is opened, the second switch S2 is disconnected, and the off-board charger is disconnected. The interlocking switch on the alternating current charging socket 4 is a fourth switch S4, the fourth switch S4 is linked with the oppositely plugged alternating current charging gun, when the fourth switch S4 is in a closed state, the locking pin of the fourth switch S4 locks the alternating current charging gun, and the alternating current charging gun cannot be plugged and unplugged; when the fourth switch S4 is unlocked, the lock pin is withdrawn, the charger is powered off, the plugged alternating current charging gun can be plugged and unplugged, and the alternating current charging gun is prevented from being plugged and unplugged accidentally in the charging process to cause electric shock hazard.

As shown in fig. 2 and 4, the third switch 31 is fixedly mounted on the charger mounting panel 21 of the charger body 2 through a nut, and in this embodiment, the third switch 31 is a normally-off self-resetting button switch. As shown in fig. 3, the first switch S1, the second switch S2, the third switch 31, and the fourth switch S4 are connected in series to form an interlock loop, and when all the interlock switches are in a closed state, the off-board charger starts to operate. The adaptor connector 3 comprises an adaptor connector socket end 32 and an adaptor connector plug end 33, and the adaptor connector socket end 32 is fixedly installed on the charger installation panel 21 through bolts; the adapter connector plug end 33 is mounted on the adapter connector socket end 32 by means of a fastening screw 34. The mounting position of the third switch 31 corresponds to the mounting position of the fastening screw 34, so that the fastening screw 34 can just press against the third switch 31 when fastened in place. The adapter connector receptacle end 32 and the adapter connector plug end 33 are mated and transmit current through contact between the inner copper core pieces. When the plug end 33 and the socket end 32 of the adaptor connector are inserted into place, the screw head of the fastening screw 34 will press against and trigger the third switch 31, so as to trigger the third switch 31 from the off state to the on state, and the control circuit will allow the current to be transmitted through the adaptor connector 3 after detecting that the third switch 31 is in the on state. When the fastening screw 34 is not tightened, that is, the plug end 33 and the socket end 32 of the adaptor connector are not inserted in place, the screw head of the fastening screw 34 cannot be pressed to the third switch 31, the third switch 31 is in an off state, and the control circuit immediately stops and cuts off the current transmission after detecting that the switch is in the off state, and no current is transmitted through the adaptor connector no matter whether the copper core inside the adaptor connector 3 is in a contact state, so that the safety and reliability of the power utilization process are ensured.