A non-vehicle-mounted charger with an interlocking function

Abstract

The present invention discloses a non-vehicle-mounted charger with an interlock function, which includes a charger body. One end of the charger body is connected to a DC charging gun, and the other end of the charger body is connected to an AC charging socket through an adapter connector. The DC charging gun, the charger body, the adapter connector, and the AC charging socket are all equipped with interlock switches, and all the interlock switches are connected in series to form an interlock circuit. When all the interlock switches are in the closed state, the non-vehicle-mounted charger starts to work. The present invention can effectively avoid the risk of electric shock to personnel caused by abnormal situations such as accidental plugging and unplugging of the charger or accidental opening of the charger during the charging process, and greatly ensure the safety and reliability of charging.

Description

Technical Field

[0001] The present invention belongs to the field of new energy electric vehicle charging and other fields with relatively large currents, and particularly relates to a non-vehicle-mounted charger with an interlock function. Background Art

[0002] In the field of new energy electric vehicle charging, non-vehicle-mounted charger products are increasingly favored by users. Among them, charging safety is the most concerned by users. During the use of the product, poor contact or accidental unplugging is likely to cause heat generation or electric shock hazards. Moreover, when the charger is accidentally opened during the charging process and personnel touch the high-voltage live parts, electric shock hazards will also occur. In addition, when the adapter connector is fastened with screws, there is inevitably the problem of whether the screws are tightened. And in many cases, even if the screws are not fully tightened, the adapter connector may still be in a contact state, that is, it can still transmit current or signals; in this case, due to the incomplete fastening of the screw connection, the components of the adapter connector are not fully fastened and installed, and the structure similar to the IP protection in the connector design may not be able to play a protective role. Once the protection fails, there will be a risk of electric shock to personnel. Summary of the Invention

[0003] Object of the Invention: The object of the present invention is to provide a non-vehicle-mounted charger with an interlock function that can solve the charging safety problem and effectively ensure the safety and reliability of the power usage process.

[0004] Technical Solution: The present invention includes a charger body. One end of the charger body is connected to a DC charging gun, and the other end of the charger body is connected to an AC charging socket through an adapter connector; the DC charging gun, the charger body, the adapter connector, and the AC charging socket are all equipped with interlock switches, and all the interlock switches are connected in series to form an interlock loop. When all the interlock switches are in the closed state, the non-vehicle-mounted charger starts to work.

[0005] A third switch is fixedly installed on the charger installation panel of the charger body. The third switch is a normally open self-resetting push-button switch, which can be automatically compressed and then turned on when the fastening screw presses it, and can automatically reset when the fastening screw leaves.

[0006] The adapter connector includes an adapter connector socket end and an adapter connector plug end. The adapter connector socket end is fixedly installed on the charger installation panel; the adapter connector plug end is installed on the adapter connector socket end through a fastening screw, and when the adapter connector plug end is inserted into the adapter connector socket end in place, the fastening screw will press and trigger the third switch to be in the on state, so that the IP protection structure in the adapter connector can play a protective role.

[0007] The installation position of the third switch corresponds to the installation position of the fastening screw, ensuring that the fastening screw can just press the third switch when it is fastened in place.

[0008] After the adapter connector socket end and the adapter connector plug end are plugged in, current is transmitted through the contact between the internal copper core parts, thereby realizing current transmission.

[0009] The interlock switch on the charger body is a second switch S2. The second switch S2 is set inside the charger body and is linked to the top cover of the charger body. When the top cover of the charger body is in the open state, the second switch S2 is disconnected to prevent the risk of electric shock to people who touch high-voltage live parts when the charger body is accidentally opened during charging.

[0010] The interlocking switch on the AC charging socket is the fourth switch S4, which is linked to the AC charging gun plugged in. When the fourth switch S4 is in the closed state, the lock pin of the fourth switch S4 locks the AC charging gun, making it impossible to plug in or out the AC charging gun plugged in when the fourth switch is closed.

[0011] The interlocking switch inside the DC charging gun is the first switch S1. The first switch S1 is a locked-in-place switch to ensure that the DC charging gun cannot be pulled out when the first switch is turned on, thereby ensuring charging safety.

[0012] Beneficial effects: Compared with the prior art, the present invention has the following beneficial effects: (1) It can solve the charging safety problem of non-on-board chargers in the field of electric vehicle charging. By setting interlocking switches on various components of the charger, the interlocking switches are connected in series. When and only when all interlocking ports are closed, the non-on-board charger can charge, effectively ensuring the safety and reliability of the power use process; (2) It can effectively avoid the risk of electric shock to personnel caused by abnormal situations such as accidental plugging and unplugging of the charger or accidental opening of the charger during charging, thereby greatly ensuring the safety and reliability of charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate transfer connector;

[0015] Figure 3 is a circuit connection diagram of each interlock switch in the present invention;

[0016] Figure 4 for Figure 2 Cross-sectional view of the fastening screw connection. DETAILED DESCRIPTION

[0017] The present invention will be described in further detail below with reference to specific implementation methods and the accompanying drawings.

[0018] like Figure 1 As described above, the present invention includes a DC charging gun 1, a charger body 2, an adapter connector 3, and an AC charging socket 4. One end of the charger body 2 is connected to the DC charging gun 1, and the other end of the charger body 2 is connected to the AC charging socket 4 via the adapter connector 3. The DC charging gun 1, the charger body 2, the adapter connector 3, and the AC charging socket 4 are all equipped with interlocking switches. The interlocking switch inside the DC charging gun 1 is a first switch S1. 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 located inside the charger body 2 and is linked to the top cover of the charger body 2. When the top cover of the charger body 2 is opened, the second switch S2 is disconnected, and the non-vehicle charger is disconnected. The interlock switch on the AC charging socket 4 is the fourth switch S4, which is linked to the plugged AC charging gun. When the fourth switch S4 is in the closed state, the locking pin of the fourth switch S4 locks the AC charging gun, and the AC charging gun cannot be plugged in or out; when the fourth switch S4 is unlocked, the locking pin is withdrawn, the charger is powered off, and the plugged AC charging gun can be plugged in or out, preventing the AC charging gun from being accidentally plugged in or out during charging, which may cause a risk of electric shock.

[0019] like Figure 2 and Figure 4 As shown, the third switch 31 is fixedly mounted on the charger mounting panel 21 of the charger body 2 by nuts. In this embodiment, the third switch 31 is a normally disconnected self-resetting push button switch. Figure 3As shown, 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 circuit. When all the interlock switches are in the closed state, the off-vehicle charger starts to work. The transfer connector 3 includes a transfer connector socket end 32 and a transfer connector plug end 33. The transfer connector socket end 32 is fixedly installed on the charger mounting panel 21 by bolts; the transfer connector plug end 33 is installed on the transfer connector socket end 32 by fastening screws 34. The installation position of the third switch 31 corresponds to the installation position of the fastening screws 34, so that when the fastening screws 34 are tightened in place, they can just press against the third switch 31. The transfer connector socket end 32 and the transfer connector plug end 33 are plugged together, and after they are plugged together, current is transmitted through the contact between the internal copper core components. When the transfer connector plug end 33 is plugged into the transfer connector socket end 32 in place, the screw head of the fastening screw 34 will press against and trigger the third switch 31, thereby triggering the third switch 31 from the normal open state to the on state. After the control circuit detects that the third switch 31 is in the on state, it will allow current to be transmitted through the transfer connector 3. When the fastening screws 34 are not tightened, that is, when the transfer connector plug end 33 is not plugged into the transfer connector socket end 32 in place, the screw head of the fastening screw 34 will not be able to press on the third switch 31, and the third switch 31 will be in the off state. After the control circuit detects that the switch is in the off state, it will immediately stop and cut off the current transmission. At this time, no matter whether the internal copper core components of the transfer connector 3 are in contact or not, no current will be transmitted through the transfer connector, ensuring the safety and reliability of the power consumption process.

Claims

1. A non-vehicle charger with an interlocking function, comprising a charger body (2), characterized in that: One end of the charger body (2) is connected to the DC charging gun (1), and the other end of the charger body (2) is connected to the AC charging socket (4) through the adapter connector (3); the DC charging gun (1), the charger body (2), the adapter connector (3) and the AC charging socket (4) are all equipped with interlock switches, and all the interlock switches are connected in series to form an interlock loop. When all the interlock switches are in the closed state, the off-vehicle charger starts to work; A third switch (31) is fixedly installed on the charger mounting panel (21) of the charger body (2), and the third switch (31) is a self-resetting push-button switch that is normally open; The adapter connector (3) includes an adapter connector socket end (32) and an adapter connector plug end (33), and the adapter connector socket end (32) is fixedly installed on the charger mounting panel (21); The adapter connector plug end (33) is installed on the adapter connector socket end (32) through a fastening screw (34), and when the adapter connector plug end (33) is inserted into the adapter connector socket end (32) in place, the fastening screw (34) will press and trigger the third switch (31) to be in the on state; The installation position of the third switch (31) corresponds to the installation position of the fastening screw (34); The interlock switch inside the DC charging gun (1) is the first switch S1, and the first switch S1 adopts a locking-in-place switch.

2. The off-vehicle charger with an interlocking function according to claim 1, wherein: After the adapter connector socket end (32) and the adapter connector plug end (33) are inserted, current is transmitted through the contact between the internal copper core parts.

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

4. The off-vehicle charger with an interlocking function according to claim 1, characterized in that: The interlock switch on the AC charging socket (4) is the fourth switch S4. The fourth switch S4 is linked with the inserted AC charging gun. When the fourth switch S4 is in the closed state, the locking pin of the fourth switch S4 locks the AC charging gun.

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