WO2012075925A1

WO2012075925A1 - Charging connector for electric vehicle

Info

Publication number: WO2012075925A1
Application number: PCT/CN2011/083511
Authority: WO
Inventors: 章晓军; 刘影
Original assignee: 怡达电气(苏州)有限公司
Priority date: 2010-12-10
Filing date: 2011-12-06
Publication date: 2012-06-14

Abstract

A charging connector for an electric vehicle comprises a charging plug (1) and a charging socket (2), a plug sleeve (101) is provided on the charging plug, and a plug pin (201) mating with the plug sleeve is provided on the charging socket; also provided on the charging plug is an anti-misplug key (3) corresponding to a specific voltage level, and an anti-misplug hole (4) matched therewith is provided on the charging socket; or an anti-misplug hole is provided on the charging plug, and an anti-misplug key matched therewith is provided on the charging socket; due to the mutual matching between the charging plug and the charging socket by arranging the anti-misplug key and the anti-misplug hole corresponding to specific voltage level, the charging connector for an electric vehicle can effectively prevent misplugging by a user, and ensure voltage matching between the charging plug and the charging socket, so that the charging connector can work reliably all the time and security risks are eliminated.

Description

Electric vehicle charging connector

Technical field

The invention relates to an electric vehicle charging connector.

Background technique

In the prior art, the charging connector for a charging vehicle such as an electric sightseeing car, an electric golf cart, an electric patrol car, an electric sanitation car, and the like mainly includes a charging plug and a charging socket. In specific use, the charging plug is connected to the charging device. The charging socket is connected to the battery on the vehicle, and the socket on the charging plug is plugged into the plug on the charging socket, and the user turns on the charger switch to connect the internal circuit of the charging connector to charge the vehicle.

At present, most customers use charging connectors with higher voltage levels. Since the charging plugs and charging sockets of different voltages have the same appearance, misplugging may occur. When a high-voltage charging plug is inserted into a low-voltage charging socket, a power failure may occur, and the charging connector (car battery) may be damaged; otherwise, when the low-voltage charging plug is inserted into the high-voltage charging socket, As a result, the charging vehicle is always saturated and cannot meet the charging requirements.

In addition, during the actual use, such a charging connector has the following problem: if the user inadvertently causes the charging plug and the charging socket to be completely inserted into the position and the charger is turned on, it is better that the latch and the socket are not in contact. Therefore, the charging connector is still not energized; but in the worse case, the socket and the plug have a large current due to a small contact area, which causes heat generation, and may burn the charging connector, which has a large unsafe factor.

Moreover, since the vehicle is charged by the electric vehicle charging connector, the vehicle is in a charging state. Once the vehicle is inadvertently started, the vehicle is forced to cut off the electric vehicle charging connector, which not only causes damage to the electric vehicle charging connector, but even It will endanger personal safety and there are major insecurity factors.

Summary of the invention

It is an object of the present invention to provide an electric vehicle charging connector that is safer and more reliable in use.

The technical solution of the present invention is: an electric vehicle charging connector, comprising a charging plug and a charging socket, wherein the charging plug is provided with a socket, and the charging socket is provided with a latch matched with the socket; The charging plug is further provided with an anti-missing key corresponding to a specific voltage level, and the charging socket is provided with a matching anti-error jack; or the charging plug is provided with an anti-error jack, and the charging socket is provided with Match the anti-missing key.

Further preferably, in the present invention, the anti-missing key is a diagonal bisector of the N-corner column, N=2n, n≥2, and the shape of the anti-missing jack matches the anti-missing key.

In a specific embodiment, the anti-missing key in the present invention is preferably a diagonally halved cylinder of a hexagonal column, and the shape of the anti-missing jack matches the anti-missing key. The hexagonal column can be divided into six diagonally halved cylinders of different angles, and each diagonally divided cylinder represents a voltage level. Therefore, when the present invention uses the diagonally equally divided cylinder of the hexagonal column as the anti-missing key, Six different voltage levels can be handled by the positional setting of the diagonally aliquoted cylinders at different angles when the product is assembled from the factory.

As with conventional techniques, the present invention is a charging connector for a charging vehicle, the specific voltage level of which includes a low voltage level and a high voltage level, wherein the low voltage level has, for example, 72V, 24V, 36V, 48V, 60V, and 96V, etc., high voltage level. There are 110V, 220V and so on.

In specific use, the user can distinguish whether the charging plug and the charging socket belong to the same voltage level according to whether the anti-missing key and the anti-error jack match, when the user puts the charging plug (charging socket) with the charging socket of different voltage level (the charging plug) When the plug is inserted, the two cannot be properly inserted.

The present invention is further improved as follows: the charging plug is provided with a normally open type micro switch that controls the internal circuit to be turned on and off, and when the plug socket on the charging plug and the pin on the charging socket are inserted into the position, The normally open micro switch is closed.

Further, in the normally open type micro switch of the present invention, a normally open type trigger lever is provided, and the normally open type trigger rod protrudes from the end surface of the charging plug; and the plug sleeve on the charging plug and the pin plug on the charging socket are inserted. When the position is received, the end face of the charging socket is pressed against the normally open trigger lever to drive the normally open micro switch to close.

Alternatively, the normally open type micro switch of the present invention is provided with a normally open type trigger lever, and the charging socket is provided with a normally open type triggering thimble opposite to the normally open type triggering rod; the socket on the charging plug When the pin on the charging socket is inserted into the position, the normally open triggering thimble presses against the normally open trigger lever to drive the normally open micro switch to close.

Further, in the present invention, the normally open trigger lever is not disposed in the normally open trigger lever protection hole provided on the end face of the charging plug.

In the present invention, as in the conventional art, the charging plug is connected to the charger through its internal circuit, and the charging socket is connected to the battery on the electric vehicle through its internal circuit.

The present invention further provides the following improvement: the charging socket is further provided with a normally closed micro switch for controlling the opening and closing of the vehicle starting circuit, and the plug socket on the charging plug and the pin on the charging socket are inserted. The normally closed micro switch is turned off.

Further, in the normally closed micro switch of the present invention, a normally closed trigger lever is provided, and the normally closed trigger lever protrudes from the end surface of the charging socket; and the plug socket on the charging plug and the plug socket on the charging socket are inserted. When connected, the end face of the charging plug is pressed against the normally closed trigger lever to drive the normally closed micro switch to open.

Alternatively, the normally closed type micro switch of the present invention is provided with a normally closed trigger lever, and the charging plug is provided with a normally closed trigger thimble opposite to the normally closed trigger lever; the charging socket and the charging plug are inserted When connected, the normally closed trigger ejector pin presses against the normally closed trigger lever to drive the normally closed micro switch to open.

Further, in the present invention, the normally closed trigger lever is not disposed in the normally closed trigger lever protection hole provided on the end surface of the charging socket.

In the present invention, as in the conventional technology, the plug on the charging plug is composed of a ground pin and a main plug, and the socket on the charging socket is composed of a ground socket and a main socket, and the plug of the charging plug and the charging socket refers to The ground pin in the latch has been inserted into the ground socket in the socket, and the main plug has no contact with the main socket, and the charging plug and the charging socket are completely inserted into the position; the plugged in position That is, the main plug is inserted into the main socket and the charging plug and the end surface of the charging socket are opposite each other, so that the charging plug and the charging socket can no longer be deeply engaged.

The advantages of the invention are:

1. The electric vehicle charging connector provided by the invention has a charging plug and a charging socket which are matched by a special anti-missing key and an anti-error jack corresponding to a specific voltage level, when one of them is a product with different voltage levels. Unable to insert effectively with another Therefore, it can effectively prevent the user from accidentally inserting, ensure the matching of the charging plug and the charging socket voltage, so that the charging connector can always work reliably and eliminate the safety hazard.

2. According to the electric vehicle charging connector provided by the present invention, since the normally open type micro switch is further disposed on the charging plug, when the charging plug is not fully inserted into the charging socket, the charging operation cannot be performed even if the user turns on the charging device. Can effectively prevent plugging Insufficient contact causes damage to the charging connector, which greatly improves the safety and reliability of use.

3. The electric vehicle charging connector provided by the invention further comprises a normally closed micro switch on the charging socket, and when the charging plug and the charging socket are plugged, the normally closed micro switch can be used to disconnect the vehicle at all times. Start the circuit to prevent the vehicle from accidentally starting, This effectively ensures the safety and reliability of the charging connector, and in particular prevents accidents that endanger personal safety.

DRAWINGS

The present invention is further described below in conjunction with the accompanying drawings and embodiments:

1 is a cross-sectional view showing a plug-in structure of a charging plug and a charging socket according to a specific embodiment of the present invention (disclosure preventing mis-insertion and anti-error jack);

Figure 2 is a cross-sectional view of the second plug structure of the embodiment of Figure 1 (disclosing the normally open type micro switch);

Figure 3 is a cross-sectional view of the third plug structure of the embodiment of Figure 1 (disclosing the normally closed micro switch);

4 is a schematic perspective structural view of a charging plug in the embodiment of FIG. 1;

Figure 5 is a front elevational view of the charging plug of the embodiment of Figure 1;

Figure 6 is a front elevational view of the charging socket of the embodiment of Figure 1;

FIG. 7 is a schematic perspective view showing the three-dimensional structure of the anti-missing key on the charging plug in the embodiment of FIG. 1. FIG.

Among them: 1, charging plug; 101, plug-in; 2, charging socket; 201, latch; 201a, ground pin; 201b, main pin; 3, anti-missing key; 4, anti-error jack; 5, normally open Micro switch; 501, normally open trigger lever; 6, normally open trigger ejector; 7, normally closed micro switch; 701, normally closed trigger; 8, normally closed trigger ejector.

detailed description

Embodiments First, as shown in FIG. 1 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 , the electric vehicle charging connector provided in this embodiment has a charging plug 1 and a charging socket 2 , which is the same as the conventional technology. The charging plug 1 is provided with a socket 101, and the charging socket 2 is provided with a latch 201 that cooperates with the socket 101; as shown in FIG. 6, the latch 201 in this embodiment is grounded by a ground pin 201a and The two main plugs 201b are composed, and the corresponding sockets 101 are composed of a ground insert sleeve and two main insert sleeves. One improvement of this embodiment is in the charging plug 1 is provided with an anti-missing key 3 corresponding to a specific voltage level, the anti-missing key 3 is a diagonal pylon of a hexagonal column, and the shape of the anti-error jack 4 and the anti-missing key 3 match. The hexagonal column can be divided into six corners (30 degrees, 90 degrees, 150 degrees, 210 degrees, 270 degrees, and 330 degrees) diagonally equally divided cylinders, corresponding to 36V, 48V, 60V, 72V, 96V, and 24V, respectively. Six low voltage levels. Specifically, as shown in FIG. 5, FIG. 6 and FIG. 7, in the present embodiment, the diagonally equally divided cylinder as the anti-missing key 3 is 330 degrees, and the corresponding low voltage level. It is 24V.

In specific use, the user can distinguish whether the charging plug 1 and the charging socket 2 belong to the same voltage level according to whether the anti-missing key 3 and the anti-error jack 4 match, when the user puts the charging plug 1 (charging socket) with different voltage levels. Charging socket 2 (charging plug) for insertion When connected, the two cannot be properly inserted.

Since the charging plug 1 and the charging socket 2 are matched to each other by a special setting of the anti-missing key 3 and the anti-erroring jack 4 corresponding to a specific voltage level, when one of the products is a product having a different voltage level, it cannot be effectively inserted with the other. Therefore, it can effectively prevent users from inserting mistakes and ensure charging. The matching of the voltage of the electric plug 1 and the charging socket 2 enables the charging connector to work reliably at all times and eliminates safety hazards.

Referring to FIG. 2, FIG. 4, FIG. 5 and FIG. 6, another modification of the embodiment is that the charging plug 1 is further provided with a normally open type micro switch 5 for controlling internal circuit switching. The normally open type micro switch 5 is provided with a normally open type trigger lever 501, and the charging socket 2 is provided with a normally open The type of trigger lever 501 is opposite to the normally open type triggering ejector pin 6. When the socket 101 on the charging plug 1 and the latch 201 on the charging socket 2 are inserted into the position, the normally open triggering ejector pin 6 is pressed against the normally open triggering lever 501 to drive the normally open type micro switch 5 to be closed, as shown in the figure. 2 states. The socket 101 and the plug 201 are inserted into the position, that is, the main plug 201b is inserted into the main socket and the end faces of the charging plug 1 and the charging socket 2 are opposite, so that the charging plug 1 and the charging socket 2 cannot be further cooperated. status. As in the conventional art, the charging plug 1 is connected to the charger through its internal circuit, and the charging socket 2 is connected to the battery on the electric vehicle through its internal circuit.

Since the charging plug 1 is provided with a normally-on type micro switch 5 for controlling the internal circuit to be turned on and off, when the charging plug 1 and the charging socket 2 are not fully inserted into the position, even if the user turns on the charging device, the charging operation cannot be performed, which is effective. Prevent damage due to poor contact due to improper insertion Bad charging connector, which greatly improves the safety and reliability of the charging connector.

As shown in FIG. 3, FIG. 4, FIG. 5 and FIG. 6, the embodiment further has an improvement on the charging socket 2, which is provided with a normally closed micro switch 7 for controlling the opening and closing of the vehicle starting circuit. The normally closed type micro switch 7 is provided with a normally closed trigger lever 701, and the charging plug 1 is provided. The normally closed trigger ejector pin 8 is opposite to the normally closed trigger lever 701; when the socket 101 on the charging plug 1 and the latch 201 on the charging socket 2 are inserted, the normally closed trigger ejector pin 8 is pressed against the normally closed type. The trigger lever 701 drives the normally closed micro switch 7 to be turned off, as shown in FIG. The plugging of the charging plug 1 and the charging socket 2 means that the ground pin 201a in the plug 201 has been inserted into the ground socket in the socket 101, and the main plug 201b is not in contact with the main socket, until charging. The entire process of plug 1 and charging socket 2 is fully inserted into position.

Since the charging socket 2 is provided with a normally closed micro switch 7 for controlling the opening and closing of the vehicle starting circuit, when the charging plug 1 and the charging socket 2 are plugged, the normally closed micro switch 7 can always disconnect the starting circuit of the vehicle. It prevents the vehicle from accidentally starting, thus effectively ensuring the safety and reliability of the use of the charging connector, especially to prevent accidents that endanger personal safety.

The embodiments described above are only intended to illustrate the technical concept and the features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the present invention and to implement the present invention. Equivalent transformations or modifications made in accordance with the spirit of the main technical solutions of the present invention are intended to be included within the scope of the present invention.

Claims

1. 一种电动车充电连接器，包括充电插头（ 1 ）和充电插座（ 2 ），所述充电插头（ 1 ）上设有插套（ 101 ），而充电插座（ 2 ）上设有与插套（ 101 ）配合的插销（ 201 ）；其特征在于，所述充电插头（ 1 ）上还设有对应特定电压等级的防误插键（ 3 ），而充电插座（ 2 ）上设有与之匹配的防误插孔（ 4 ）；或者所述充电插头（ 1 ）上设有防误插孔（ 4 ），而充电插座（ 2 ）上设有与之匹配的防误插键（ 3 ）。 An electric vehicle charging connector comprising a charging plug (1) and a charging socket (2), wherein the charging plug (1) is provided with a socket ( 101), the charging socket (2) is provided with a latch (201) that cooperates with the socket (101); and the charging plug (1) is further provided with an anti-missing key corresponding to a specific voltage level ( 3 ), and the charging socket ( 2 ) is provided with a matching anti-error jack ( 4 ); or the charging plug ( 1 ) is provided with an anti-error jack ( 4 ), and the charging socket ( 2 ) is provided There is a matching anti-missing key ( 3).

2. 根据权利要求 1 所述的电动车充电连接器，其特征在于，所述防误插键（ 3 ）为 N 角柱的对角等分柱体， N ＝ 2n ， n ≥ 2 ，而防误插孔（ 4 ）的形状与所述防误插键（ 3 ）匹配。 2. The electric vehicle charging connector according to claim 1, wherein the mis-insertion preventing key (3) is a diagonal bisector of the N-corner, N = 2n , n ≥ 2 , and the shape of the anti-error jack ( 4 ) matches the anti-missing key ( 3 ).

3. 根据权利要求 1 或 2 所述的电动车充电连接器，其特征在于，所述充电插头（ 1 ）上还设有控制内部电路通断的常开型微动开关（ 5 ），所述充电插头（ 1 ）上的插套（ 101 ）和充电插座（ 2 ）上的插销（ 201 ）插接到位时，所述常开型微动开关（ 5 ）闭合。 3. The electric vehicle charging connector according to claim 1 or 2, wherein the charging plug (1) There is also a normally open type micro switch (5) for controlling the internal circuit to be turned on and off, a socket (101) on the charging plug (1) and a pin on the charging socket (2) (201). When the plug is inserted into the position, the normally open type micro switch (5) is closed.

4. 根据权利要求 3 所述的电动车充电连接器，其特征在于，所述常开型微动开关（ 5 ）上设有常开型触发杆（ 501 ），该常开型触发杆（ 501 ）突出充电插头（ 1 ）的端面；而充电插头（ 1 ）上的插套（ 101 ）和充电插座（ 2 ）上的插销（ 201 ）插接到位时，充电插座（ 2 ）的端面压抵常开型触发杆（ 501 ）而驱使常开型微动开关（ 5 ）闭合。 4. The electric vehicle charging connector according to claim 3, wherein the normally open type micro switch (5) is provided with a normally open trigger lever ( 501), the normally open trigger lever (501) protrudes from the end face of the charging plug (1); and the socket (101) on the charging plug (1) and the latch on the charging socket (2) (201) When inserted into the position, the end face of the charging socket (2) is pressed against the normally open type trigger lever (501) to drive the normally open type micro switch (5) to close.

5. 根据权利要求 3 所述的电动车充电连接器，其特征在于，所述常开型微动开关（ 5 ）上设有常开型触发杆（ 501 ），而充电插座（ 2 ）上设有与常开型触发杆（ 501 ）相对的常开型触发顶针（ 6 ）；所述充电插头（ 1 ）上的插套（ 101 ）和充电插座（ 2 ）上的插销（ 201 ）插接到位时，常开型触发顶针（ 6 ）压抵常开型触发杆（ 501 ）而驱使常开型微动开关（ 5 ）闭合。 The electric vehicle charging connector according to claim 3, wherein the normally open type micro switch (5) is provided with a normally open trigger lever ( 501), and the charging socket (2) is provided with a normally open triggering thimble (6) opposite to the normally open triggering lever (501); a socket (101) and a charging socket on the charging plug (1) ( 2 When the latch (201) on the plug is inserted into the position, the normally open trigger ejector pin (6) is pressed against the normally open trigger lever (501) to drive the normally open microswitch (5) to close.

6. 根据权利要求 5 所述的电动车充电连接器，其特征在于，所述常开型触发杆（ 501 ）没于充电插头（ 1 ）端面上设有的常开型触发杆保护孔内。 6. The electric vehicle charging connector according to claim 5, wherein said normally open type trigger lever (501) is absent from a charging plug (1) The normally open trigger rod provided on the end face protects the hole.

7. 根据权利要求 1 或 2 所述的电动车充电连接器，其特征在于，所述充电插座（ 2 ）上还设有控制车辆启动电路通断的常闭型微动开关（ 7 ），所述充电插头（ 1 ）上的插套（ 101 ）和充电插座（ 2 ）上的插销（ 201 ）插接时，所述常闭型微动开关（ 7 ）断开。 The electric vehicle charging connector according to claim 1 or 2, wherein the charging socket (2) There is also a normally closed micro switch (7) for controlling the on and off of the vehicle starting circuit, a socket (101) on the charging plug (1) and a pin on the charging socket (2) (201) When the plug is connected, the normally closed micro switch (7) is turned off.

8. 根据权利要求 7 所述的电动车充电连接器，其特征在于，所述常闭型微动开关（ 7 ）上设有常闭型触发杆（ 701 ），该常闭型触发杆（ 701 ）突出充电插座（ 2 ）的端面；而充电插头（ 1 ）上的插套（ 101 ）和充电插座（ 2 ）上的插销（ 201 ）插接时，充电插头（ 1 ）的端面压抵常闭型触发杆（ 701 ）而驱使常闭型微动开关（ 7 ）断开。 8. The electric vehicle charging connector according to claim 7, wherein the normally closed micro switch (7) is provided with a normally closed trigger lever ( 701), the normally closed trigger lever (701) protrudes from the end surface of the charging socket (2); and the socket (101) on the charging plug (1) and the latch on the charging socket (2) (201) When plugging, the end face of the charging plug (1) is pressed against the normally closed trigger lever (701) to drive the normally closed microswitch (7) to open.

9. 根据权利要求 7 所述的电动车充电连接器，其特征在于，所述常闭型微动开关（ 7 ）上设有常闭型触发杆（ 701 ），而充电插头（ 1 ）上设有与常闭型触发杆（ 701 ）相对的常闭型触发顶针（ 8 ）；所述充电插座（ 2 ）与充电插头（ 1 ）插接时，常闭型触发顶针（ 8 ）压抵常闭型触发杆（ 701 ）而驱使常闭型微动开关（ 7 ）断开。 9. The electric vehicle charging connector according to claim 7, wherein the normally closed type micro switch (7) is provided with a normally closed trigger lever ( 701), and the charging plug (1) is provided with a normally closed triggering thimble (8) opposite to the normally closed triggering lever (701); the charging socket (2) and the charging plug (1) When the plug is connected, the normally closed trigger ejector pin (8) is pressed against the normally closed trigger lever (701) to drive the normally closed micro switch (7) to open.

10.根据权利要求9所述的电动车充电连接器，其特征在于，所述常闭型触发杆（701）没于充电插座（2）端面上设有的常闭型触发杆保护孔内。The electric vehicle charging connector according to claim 9, wherein the normally closed trigger lever (701) is not inside the normally closed trigger lever protection hole provided on the end surface of the charging socket (2).