CN104241959A - High voltage interlock loop system and fast connector thereof - Google Patents

Abstract

The invention discloses a quick connection device for a high-voltage interlock circuit system, comprising: a first pair of fittings and a second pair of fittings that can be connected to each other as a whole; The first connecting terminal of the high-voltage circuit in the circuit system is used to respectively connect or disconnect the second connecting terminal of the high-voltage interlocking circuit in the high-voltage interlocking circuit system; the first pair of accessories is provided with a slidable locking piece, and the second A second terminal on the pair of accessories is mounted in the lock. The invention also discloses a high-voltage interlocking circuit system. The implementation of the high-voltage interlock circuit system and its quick connection device of the present invention can effectively avoid the leakage of the secondary lock, improve the connection reliability of the secondary lock, simplify assembly, and ensure that the high-voltage interlock circuit and the high-voltage circuit are connected or disconnected in sequence. To ensure that there is a long enough operation time interval between them, and further improve the safety performance.

Description

A high-voltage interlocking circuit system and its quick connection device

technical field

The invention relates to the field of mechanical structures, in particular to a high-voltage interlock circuit system with a locking structure and a quick connection device thereof.

Background technique

At present, the voltage of the high-voltage system of hybrid electric vehicles and pure electric vehicles has far exceeded the safe voltage of the human body. Therefore, in the design process, for the sake of personal safety, it is necessary to add a high-voltage interlock structure and related circuits in the design of the high-voltage system to prevent personal safety injuries caused by non-professional misoperation.

The principle of the high-voltage interlock structure is: when plugging and unplugging the connecting parts in the high-voltage circuit, such as high-voltage harness connectors, maintenance switches, etc., before the high-voltage circuit is disconnected, the high-voltage interlock circuit is disconnected first, and the entire high-voltage system is powered off and guaranteed When the high-voltage circuit is not charged, the high-voltage circuit is disconnected again. This can fully guarantee the personal safety of the operator.

In the prior art, there are mainly the following two high-voltage interlock connector structures:

The first type is a split-type external high-voltage interlock structure, which is mainly composed of a male end pair fitting and a harness side pair fitting, and a high-voltage interlock connector is provided on the harness side pair fitting. When assembling, first insert the wire harness side pair fitting into the male end pair fitting, and then push the high-voltage interlock connector on the wire harness side pair fitting until it is fully seated. The high-voltage interlock connector of this structure has the following defects: 1. The installation is relatively complicated, and the structure needs to be further assembled with a corresponding locking structure after the high-voltage interlock connector is in place; in addition, the production process of the product is relatively cumbersome, which is not conducive to control cost. 2. In the case of not assembling the male terminal pair accessories and the wire harness side pair accessories, the high voltage interlock connector on the wire harness side pair accessories can be directly assembled. That is to say, once the high-voltage interlock connector is assembled, the high-voltage circuit in the male-end pair of accessories and the harness-side pair of accessories will carry high-voltage electricity. Once the operator touches it, there will be a safety hazard of electric shock, and its Danger.

The second is a built-in high-voltage interlock structure integrated with the connector housing, which mainly realizes the high-voltage interlock function through stroke difference, and has the following defects: 1. The leak-proof function of the secondary lock cannot be realized. During the assembly process, if the secondary lock is not assembled, the function and use of the connector will not be affected, and there will be a risk of the secondary lock being missing. 2. In the process of disconnecting the male terminal pair accessories and the harness side pair accessories, the time interval between the disconnection of the high-voltage interlock circuit and the disconnection of the high-voltage circuit is too short, and the system cannot disconnect the high-voltage power in time, which is very easy to generate arcs. The process of pulling out the male end-to-fitting and the wiring harness side-to-fitting is a live operation, which affects the reliability and safety of the connection structure.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-voltage interlock circuit system and its quick connection device, which can effectively avoid missing installation of the secondary lock, improve the connection reliability of the secondary lock, and simplify assembly.

Another technical problem to be solved by the present invention is to ensure that the high-voltage interlock circuit and the high-voltage circuit are connected or disconnected in sequence, ensuring that there is a sufficiently long operation time interval between them, and further improving safety performance.

In order to solve the above technical problems, an embodiment of the present invention provides a quick connection device for a high-voltage interlock circuit system, including: a first pair of fittings and a second pair of fittings that can be connected to each other as a whole, the first pair of fittings The first pair of fittings and the second pair of fittings are respectively provided with first connecting terminals for respectively connecting or disconnecting the high-voltage circuit in the high-voltage interlocking circuit system. Open the second terminal of the high-voltage interlock circuit in the high-voltage interlock circuit system; the first pair of accessories is provided with a slidable locking piece, and the second terminal on the first pair of accessories is installed in the locking piece, wherein : The sliding locking part drives the second terminal on the first pair of accessories to move, and when it is connected to or separated from the second terminal in the second pair of accessories, the high-voltage interlock circuit will be connected or disconnected.

Wherein, the second pair of fittings is provided with a boss whose position matches the locking member, and the second connecting terminal in the second pair of fittings is installed in the boss.

Wherein, the second connection terminal installed in the locking member is a plug structure, and the second connection terminal installed in the boss is a socket structure that can be adapted to the plug structure.

Wherein, plugging and unplugging the first pair of accessories and the second pair of accessories will make the high voltage circuit connected or disconnected when the first terminal of the first pair of accessories is connected or separated from the first terminal of the second pair of accessories.

Wherein, the second connecting terminal in the second pair of accessories is connected to a control device for controlling the power supply of the high-voltage circuit.

Wherein, the first connection terminal in the first pair of accessories and the first connection terminal in the second pair of accessories are respectively connected to the high-voltage battery and the high-voltage electrical equipment.

The invention also discloses a high-voltage interlock circuit system, which includes a high-voltage circuit connected with a high-voltage battery and a high-voltage electrical device, a high-voltage interlock circuit connected with a control device, and connected to the high-voltage circuit and the high-voltage circuit respectively. The quick connection device in the high-voltage interlock circuit, the control device is connected with the high-voltage battery, the quick connection device includes: the first pair of accessories and the second pair of accessories that can be connected to each other as a whole, the first pair of accessories and the second pair of accessories The first connecting terminals connected to the high-voltage battery and the high-voltage electrical equipment are respectively provided. The first pair of accessories and the second pair of accessories are respectively provided with the second connecting terminals connected to the control device. Sliding locking part, the second connecting terminal on the first pair of fittings is installed in the locking part, wherein: the first pair of fittings and the second pair of fittings are inserted and pulled out, when the first connecting terminal in the first pair of fittings is connected to When the first connecting terminal in the second pair of accessories is connected or separated, the high-voltage battery and the high-voltage electrical equipment will be connected or disconnected; the sliding locking member drives the second connecting terminal on the first pair of accessories to move, When the second connection terminals in the two pairs of fittings are interlocked or separated in succession, the control device will be connected or disconnected, so as to control the energization of the connected high-voltage circuit.

Wherein, the control device includes: a power supply and a controller respectively connected to the second terminal of the second pair of accessories, and the controller is connected to a high-voltage battery; the second terminal of the first pair of accessories is connected to the second terminal of the second pair of accessories. When the two terminals are connected and interlocked, the power supply is connected to the controller.

Wherein, the second pair of fittings is provided with a boss whose position matches the locking member, and the second connecting terminal in the second pair of fittings is installed in the boss.

Wherein, the second connection terminal installed in the locking member is a plug structure, and the second connection terminal installed in the boss is a socket structure that can be adapted to the plug structure. the

The high-voltage interlock circuit system and its quick connection device provided by the present invention, and the sliding locking member, when the second terminal on the first pair of accessories is connected to the second terminal of the second pair of accessories, interlocked or separated, the high-voltage The interlock circuit is connected or disconnected to ensure that the high-voltage circuit is operated without power; in addition, the high-voltage interlock circuit is integrated with the locking part of the quick connection device, which can effectively avoid secondary lock leakage. Better ensure the reliability of the secondary lock; at the same time, when the quick connection device of this structure is disassembled, it can ensure that there is a long enough time interval between the disconnection of the high-voltage interlock circuit and the disconnection of the high-voltage circuit, fully ensuring the operation personal safety of personnel. The structure is reasonable, the cost is controllable, and the assembly is convenient. the

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a block diagram of a circuit structure of a high-voltage interlocking loop system according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the external structure of the quick connection device used in the high voltage interlock circuit system according to the embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a quick connection device for a high-voltage interlock circuit system according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the external structure of the embodiment of the present invention used in the first use state of the high-voltage interlock circuit system quick connection device.

Fig. 5 is a schematic diagram of the external structure of the embodiment of the present invention used in the first use state of the high-voltage interlock circuit system quick connection device.

Detailed ways

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to Fig. 1-Fig. 5 in combination, it is Embodiment 1 of the high voltage interlock circuit system of the present invention.

As shown in Figure 1, it is a block diagram of the circuit structure of the high-voltage interlocking loop system in this embodiment. The high-voltage interlocking loop system in this embodiment includes: a high-voltage loop L1 connected to a high-voltage battery 31 and a high-voltage electrical device 32, respectively. A high-voltage interlock circuit L2 connected to a control device and quick connection devices respectively connected to the high-voltage circuit L1 and the high-voltage interlock circuit L2 , the control device is connected to the high-voltage battery 31 .

The quick connection device includes: a first pair of accessories 1 and a second pair of accessories 2 that can be connected to each other as a whole. The first connection terminals 11, 21 of the first pair of accessories 1 and the second pair of accessories 2 are respectively provided with second connection terminals 12, 22 connected to the control device.

Please refer to FIG. 2 , which is a schematic diagram of the external structure of the quick connection device in this embodiment. In this embodiment, the first pair of fittings 1 is the male-end pair of fittings, and the second pair of fittings 2 is the wiring harness side pair of fittings. The inside of the two pairs of accessories is equipped with a corresponding clamping structure to achieve mutual plugging and fastening. When the two pairs of accessories are plugged in and out of each other, the terminals set inside the two pairs of accessories can be connected or disconnected to realize the corresponding high-voltage circuit L1 It is connected or disconnected with the high-voltage interlock circuit L2.

In this embodiment, the first connection terminal 11 (as shown in FIG. 3 ) is installed in the middle of the first pair of accessories 1 , and is connected to the high-voltage electrical equipment 32 . The first pair of accessories 1 is provided with a block-shaped slidable locking piece 13 on the top as shown in FIG. 2 , and the second connection terminal 12 is installed in the locking piece 13 .

Preferably, the second terminal 12 in the first pair of accessories 1 is a plug structure.

Further, the first connection terminal 21 in the second pair of accessories 2 is also installed in the middle of the second pair of accessories 2, and the position of the device corresponds to the position of the first connection terminal 11 of the first pair of accessories 1. When the pair of accessories 1 and the second pair of accessories 2 are plugged together, the two terminals are reliably connected, and the first connection terminal 21 is connected to the high-voltage battery 31 . The second pair of fittings 2 is provided with a boss 23 whose position matches the locking member 13, and the second connection terminal 22 in the second pair of fittings 2 is installed in the boss 23. When the first pair of fittings 1 and the second When the two pairs of fittings 2 are plugged in, the sliding locking member 13 can drive the second connecting terminal 12 to move, and realize reliable connection between it and the second connecting terminal 22 in the boss 23 .

Preferably, the second connection terminal 22 in the boss 23 is a socket structure that can be adapted to the plug structure of the second connection terminal 12 in the first pair of accessories 1 . Among them: the function of the first connection terminal 11, 21 is to respectively connect or disconnect the high-voltage circuit L1 in the high-voltage interlock circuit system, and the function of the second connection terminal 12, 22 is to respectively connect or disconnect the high-voltage interlock circuit system. High voltage interlock circuit L2 in the lock circuit system.

Specifically, since the first connecting terminals 11, 21 are respectively installed in the first pair of fittings 1 and the second pair of fittings 2, when the first connecting terminals 11, 21 are connected or disconnected, the connection of the high-voltage circuit L1 can be realized. Or disconnect; Since the second terminal 12,22 is installed in the lock piece 13 and the boss 23 respectively, when the lock piece 13 is close to or away from the boss 23 to connect or disconnect the second terminal 12,22 , which can realize the connection or disconnection of the high-voltage interlock circuit L2.

In the present embodiment, the effect of setting the second connection terminals 12, 22 on the slidable locking member 13 and the boss 23 is to keep the order in which the high-voltage circuit L1 and the high-voltage interlock circuit L2 are connected or disconnected, for example : When connected, the high-voltage circuit L1 is connected first, and then the high-voltage interlock circuit L2 is connected; The disconnection time of the interlock circuit L2 is long enough to ensure the safety of the operation. Its specific structure will be described in detail below. In addition, disposing two connection terminals on the locking member 13 can prevent missing assembly of the locking member 13 and further improve assembly reliability.

Further, the control device in this embodiment includes: a power supply 41 and a controller 42 respectively connected to the second terminals 22 in the second pair of accessories 2, wherein: the controller 42 is connected to the high-voltage battery 31; the first pair of accessories 1 When the second connection terminal 12 on the upper part is connected to the second connection terminal 22 in the second pair of accessories 2 and interlocked, the power supply 41 and the controller 42 are connected.

The power supply 41 in this embodiment adopts a 12V DC power supply. When the power supply 41 is connected to the controller 42, since the controller 42 is connected to the high-voltage battery 31, the controller 42 will control when receiving the 12V voltage feedback from the DC power supply 41. The high voltage circuit L1 is energized. That is to say, the function of the high-voltage interlock circuit L2 being on or off is to control whether the high-voltage circuit L1 is energized, thereby ensuring that the operator can operate in a safe environment.

Please refer to Fig. 1-Fig. 5. When the quick connection device of the present invention is implemented, firstly, the first pair of fittings 1 and the second pair of fittings 2 can be butted together as a whole. The first pair of fittings 1 and the second pair of fittings 2, the first connecting terminals 11 and 12 are connected in succession. Since the two ends of the first connecting terminals 11 and 12 are respectively connected to the high-voltage battery 31 and the high-voltage electrical equipment 32, the high-voltage circuit L1 is in the connected state, but at this time the high-voltage circuit L1 is not powered.

Immediately afterwards, the sliding locking member 13 drives the second connection terminal 12 on the first pair of accessories 1 to move, and when the locking member 13 is completely connected to the boss 23, the first pair of accessories 1 and the second pair of accessories 2 realize a secondary connection. lock tight. At this time, the second connection terminals 12, 22 in the first pair of accessories 1 and the second pair of accessories 2 are connected in succession. Since the two ends of the second connection terminals 12, 22 are respectively connected to the power supply 41 and the controller 42, the high-voltage interlock circuit L2 is in the on state, and the controller 42 controls the high voltage battery 31 to be powered on.

Further, when the first pair of fittings 1 and the second pair of fittings 2 are separated, it is first necessary to operate the locking member 13 to separate the secondary lock. After the operating locking member 13 is completely separated from the boss 23, the second connecting terminal 12, 22 is disconnected, and the high-voltage interlock circuit L2 is disconnected. When the controller 42 cannot receive the voltage feedback from the power supply 41, it controls the high voltage battery 31 to be powered off. During this process, although the high-voltage circuit L1 is connected, it is not energized, which fully guarantees the safety of the operator.

In other embodiments of the quick connection device used in the high-voltage interlock circuit system of the present invention, the slidable locking member can also be arranged on the second pair of accessories, as long as the high-voltage interlock circuit and the locking member of the quick connection device are set as All in one. In addition, the quick connection device used in the high-voltage interlock circuit system of the present invention can be applied to new energy vehicles such as hybrid vehicles and pure electric vehicles.

The high-voltage interlocking circuit system and its quick connection device provided by the present invention, and the sliding locking member can be locked or separated when the second connecting terminal on the first pair of fittings is connected to or separated from the second connecting terminal in the second pair of fittings. First, connect or disconnect the high-voltage interlock circuit to ensure that the high-voltage circuit is not charged, and operate the high-voltage circuit; in addition, the high-voltage interlock circuit and the locking part of the quick connection device are set as one, which can effectively avoid the secondary lock Missing installation can better ensure the reliability of the secondary lock; at the same time, when the quick connection device of this structure is disassembled, it can ensure that there is a long enough time interval between the disconnection of the high-voltage interlock circuit and the disconnection of the high-voltage circuit. Fully guarantee the personal safety of the operator. The structure is reasonable, the cost is controllable, and the assembly is convenient.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (10)

1. the Quick Connect Kit for high-voltage interlocking circuit system, it is characterized in that, comprise: mutually can dock the first pair of accessory and second pair of accessory that are connected as a single entity, be respectively equipped with the first binding post being switched on or switched off high-voltage interlocking circuit system mesohigh loop respectively in described first pair of accessory and described second pair of accessory, in described first pair of accessory and described second pair of accessory, be also respectively equipped with the second binding post being switched on or switched off high-voltage interlocking circuit system mesohigh interlocking loop respectively;

Described first pair of accessory is provided with slidably lock piece, described second binding post on described first pair of accessory is installed in described lock piece, wherein: the described lock piece that slides drives described second binding post on described first pair of accessory to move, when itself and described second binding post in described second pair of accessory locking or described high-voltage interlocking loop will be made when being separated to be switched on or switched off in succession.

2. as claimed in claim 1 for the Quick Connect Kit of high-voltage interlocking circuit system, it is characterized in that, described second pair of accessory is provided with position and the suitable boss of described lock piece, and described second binding post in described second pair of accessory is installed in described boss.

3. as claimed in claim 2 for the Quick Connect Kit of high-voltage interlocking circuit system, it is characterized in that, described second binding post be installed in described lock piece is plug construction, and described second binding post be installed in described boss is jack structure that can be suitable with described plug construction.

4. as claimed in claim 1 for the Quick Connect Kit of high-voltage interlocking circuit system, it is characterized in that, plug described first pair of accessory and described second pair of accessory, when described first binding post in described first pair of accessory and described first binding post in described second pair of accessory in succession or described high tension loop when being separated, will be made to be switched on or switched off.

5. as claimed in claim 1 for the Quick Connect Kit of high-voltage interlocking circuit system, it is characterized in that, described second binding post in described second pair of accessory is connected to one in order to carry out the control device controlled that is energized to described high tension loop.

6. as claimed in claim 1 for the Quick Connect Kit of high-voltage interlocking circuit system, it is characterized in that, described first binding post in described first binding post in described first pair of accessory and described second pair of accessory is connected to high-tension battery and high voltage electric device equipment respectively.

7. a high-voltage interlocking circuit system, it is characterized in that, the Quick Connect Kit that described high-voltage interlocking circuit system comprises the high tension loop being connected to high-tension battery and high voltage electric device equipment, the high-voltage interlocking loop being connected with a control device and accesses to respectively in described high tension loop and described high-voltage interlocking loop, described control device is connected with described high-tension battery, and described Quick Connect Kit comprises:

Mutually can dock the first pair of accessory and second pair of accessory that are connected as a single entity, the first binding post being connected to described high-tension battery and described high voltage electric device equipment is respectively equipped with in described first pair of accessory and described second pair of accessory, the second binding post being connected to described control device is also respectively equipped with in described first pair of accessory and described second pair of accessory, described first pair of accessory is provided with slidably lock piece, described second binding post on described first pair of accessory is installed in described lock piece, wherein:

Plug described first pair of accessory and described second pair of accessory, when described first binding post in described first pair of accessory and described first binding post in described second pair of accessory in succession or described high-tension battery and described high voltage electric device equipment when being separated, will be made to be switched on or switched off; The described lock piece that slides drives described second binding post on described first pair of accessory to move, when itself and described second binding post in described second pair of accessory locking or described control device will be made when being separated to be switched on or switched off in succession, in order to carry out energising control to the high tension loop of connecting.

8. high-voltage interlocking circuit system as claimed in claim 7, it is characterized in that, described control device comprises: the power supply be connected with described second binding post in described second pair of accessory respectively and controller, and described controller connects described high-tension battery; Described second binding post in described second binding post on described first pair of accessory and described second pair of accessory in succession locking time, described power supply and described controller are connected.

9. high-voltage interlocking circuit system as claimed in claim 8, is characterized in that, described second pair of accessory is provided with position and the suitable boss of described lock piece, and described second binding post in described second pair of accessory is installed in described boss.

10. high-voltage interlocking circuit system as claimed in claim 9, it is characterized in that, described second binding post be installed in described lock piece is plug construction, and described second binding post be installed in described boss is jack structure that can be suitable with described plug construction.