JPH04185235A - Structure for prevention of spark of plug - Google Patents

Abstract

PURPOSE:To prevent a large current generating a spark from flowing by fixing a resistor of an elastic body to plug pins to connect a power source and a charge controller in order to charge a battery car equipped with the charge controller. CONSTITUTION:When a connector 250 is inserted into a connector 230 to charge a battery, male pins 240 are fitted into holes 252. Further insertion applies the end 271 of an elastic body 270 to the tips of the male pins 240, a current is passed through the elastic body 270 as a resistor, and a capacitor in a charge controller 210 is charged in an instant. Meanwhile, the elastic body 270 is compressed gradually by the insertion, the male pins 240 are fitted into female pins 260, and a current bypassing the resistor is passed. Thereby spark-free charge is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a spark prevention structure for a plug used in a battery vehicle.

(Prior Art) Charging devices for battery vehicles include on-vehicle charging devices and separate charging devices. When charging the battery 25,
When using an on-vehicle charging device, connect the connector 60.40 between the charging power source 20 and the charging controller 10 for charging, and disconnect the connector 60.40 after charging is completed (
(See Figures 11 and 13). In addition, when using a separate charging device, the connector 65 from the battery 25, which is normally connected to the connector 45 that supplies 1i current to each part of the vehicle body (hereinafter referred to as the vehicle body connector), is used. ,
It is connected to the connector 46 of the charging controller 11 for charging, and after charging is completed, it is connected again to the connector 45 on the vehicle body side (see FIGS. 12 and 13).

Generally, when charging a battery, hydrogen is likely to be generated, and this tendency becomes stronger as charging approaches the end.

Furthermore, depending on the workplace, multiple battery vehicles may be charged in one place, and care must be taken to ensure ventilation when charging. By the way, charge controller 1
0. A capacitor 12 is used in circuits such as the vehicle controller 15, and a large charge is applied to the condenser 12 when the connector is inserted in the case of Fig. 11 at the start of charging and in the case of Fig. 12 at the end of charging. Because current flows through it, sparks are likely to form between the connectors. This is not preferable in an environment where hydrogen is likely to be generated as described above. Therefore, in the example of FIG. 11, there is a resistor 1WI in the circuit of the charge controller IO.
3, and in the example shown in Fig. 12, by providing a resistor I3 in the circuit of the vehicle body controller 15, the current when the plug is inserted is suppressed to prevent the generation of sparks, and after the plug is inserted. The resistor 13 is bypassed using a switch 14 or the like, and the charge controller 10 or the vehicle body controller 15 is energized (see FIG. 6).

(Problem to be Solved by the Invention) However, in the conventional device, if the switch 14 fails, current will always flow through the resistor 13 even during charging, reducing the charging performance and not being supplied to the vehicle controller. There were concerns that problems such as a decrease in electromotive force would occur.

Therefore, in view of the above problems, the present invention has been developed to prevent the generation of sparks when charging a Panteri vehicle without the risk of adverse effects such as a decrease in charging performance or a decrease in electromotive force to the vehicle controller due to a switch failure. The technical problem to be solved is to provide a configuration.

(Means for Solving the Problems) The present invention takes the following measures to solve the above problems.

That is, in the first invention, a resistor made of an elastic body is attached to a plug pin that connects a power source and a charge controller in order to charge a battery vehicle equipped with a charge controller. In the second invention, a resistor made of an elastic body is attached to a plug pin of a panteri plug that connects the battery to either the connector that supplies power to various parts of the vehicle body or the charge controller.

(Function) According to the spark prevention structure of the plug of the present invention by the above-mentioned means, when the plug is inserted for charging or for making the battery vehicle ready for operation after charging, the electric current is initially flows through the resistor, thereby preventing a large iI current that would cause a spark from flowing. Next, as the plug is inserted, the resistor, which is an elastic body, is compressed and the plug pins come into contact with each other, so that current flows without passing through the resistor.

(Example) Hereinafter, an example embodying the present invention will be described based on FIGS. 1 to 5.

<Example I> This example is a specific example of the first invention. As shown in Figure 1, the male side plug pin (hereinafter referred to as male pin) 14
0 and a wall portion 131 surrounding it
30 is fixed to the charge controller 110 of the main type charging device, and there is a female side plug pin (hereinafter referred to as female pin) 1 inside.
A connector 150, which fits into the connector 130, is connected to a charging power source (not shown). Connector 130 has its male pins 140 as shown in FIG.
A coil-shaped elastic body +70, which is a resistor, is arranged so as to be wound around the body, one end of which is fixed to the base 14+ of the male pin +40, and the other end protruding outside beyond the tip of the male pin +40. It is supposed to be done. This elastic body +70 is
The entire sleeve is coated so that there is no electrical continuity with the male pin 140. However, electrical continuity is allowed between the male pin +40 and the base +41, and the end 171 that protrudes outward from the tip of the male pin +40 is not coated and is not electrically conductive. Conduction is possible. Corresponding connector +50
The cross-sectional structure of is illustrated in FIG. A main body +51 made of a non-conductor that fits into the wall portion 131 on the side of the connector 130,
A hole 152 is formed into which an elastic body +70 wound around the male pin 140 can be inserted, and a female bottle 160 into which the male bottle 140 fits is buried inside the hole +52. The tip end +61 of the female bottle 160 is planar so that the tip end 171 of the elastic body 170 can come into contact with it.

The spark prevention structure of the plug of this embodiment is constructed as described above, and its operation will be explained below. When the connector 150 is inserted into the connector 130 to charge the battery, the connector +50 first fits into the wall portion 13+, and then the elastic body 170 fits into the hole 152. When further inserted, the tip +71 of the elastic body 170 and the female pin 160
The tip end +61 of the charge controller +61 comes into contact with the charge controller +61, and a current flows through the elastic body +70, which is a resistor, and the capacitor in the charge controller +10 is instantly charged. During this time, the elastic body 170 is gradually compressed by insertion, and the male bottle 140 is fitted into the female bottle 160, so that current flows without passing through a resistor. In this way, charging can be performed without sparks flying. After charging is complete, connect the connector +
When the elastic body 170 is pulled out, the elastic body 170 returns to its original shape, and the next time the battery is charged, it can be used without sparks flying.

As described above, according to the charging device of this embodiment, it is possible to prevent sparks from flying when the plug is inserted, and moreover, the charging performance does not deteriorate due to a malfunction of the switch, unlike in the conventional case. In addition, by incorporating a resistor into the plug, it is no longer necessary to incorporate a means to prevent sparks into the charge controller, which is required in the past, increasing the degree of freedom in design and allowing for more compact charging. We will be able to provide equipment.

<Example 2> This example is a specific example of the first invention. As shown in FIG. 4, a male bottle 240 and a wall portion 231 surrounding it
A connector 230 consisting of the following is fixed to the charging controller 210 of the main type charging device, and a connector 250 fitted with the connector 230 and having a female bottle 260 inside is connected to a charging power source (not shown). Figure 5 shows connector 2
50 represents the cross-sectional structure. A hole 252 into which the male bottle 240 can be inserted and fitted is formed in a main body 251 made of a non-conductor that fits into the wall portion 231.
A female pin 260 into which the male pin 240 fits is embedded inside. The inner peripheral surface of the female bottle 260 and the inner peripheral surface of the hole 252 are configured to be flush with each other. A coiled elastic body 270 that is a resistor is disposed inside the female pin 260, one end of which is fixed to the base 261 of the female bottle 260, and the other end of which is attached to the outside of the tip 262 of the female bottle 260. It's starting to stand out. The entire elastic body 270 is coated so that there is no electrical conduction between the elastic body 270 and the female pin 260.

However, electrical continuity is allowed between the base 26 of the female bottle 260 and the tip 262 of the female bottle 260.
The end portion 271 that protrudes further to the outside is also not coated, allowing electrical conduction. End 2
71 has a coil whose diameter is slightly narrowed.

The charging device of this embodiment is constructed as described above, and its operation will be explained below. When the connector 250 is inserted into the connector 230 to charge the battery, the main body 251 first fits into the wall portion 231, and then the male bottle 240 fits into the hole 252. When it is further inserted, the end 271 of the elastic body 270 and the tip of the male bottle 240 come into contact, and a current flows through the elastic body 270, which is a resistor, to instantly charge the capacitor in the charge controller 210. During this time, the elastic body 27θ is gradually compressed as it is inserted, and the male pin 240 is fitted into the female pin 260, allowing current to flow without passing through the resistor. In this way, charging can be performed without sparks flying. When charging is completed and the connector 250 is pulled out, the elastic body 270 returns to its original shape, and the next time charging can be performed without causing sparks, the spark prevention structure of the plug of this embodiment is as follows. According to
Prevents sparks from flying when plugging in,
Unlike in the past, the switch does not malfunction and the charging performance deteriorates. In addition, by incorporating a resistor into the plug, it is no longer necessary to incorporate a means to prevent sparks into the charge controller, which is required in the past, increasing the degree of freedom in design and allowing for more compact charging. equipment can be provided.

<Example 3> This example is a specific example of the second invention. As shown in Figure 6, the male side plaque bottle (hereinafter referred to as female pinot) 34
0 and a wall portion 331 surrounding it.
30 is connected to various parts of the vehicle body such as a vehicle body controller (not shown), and there is a female plug pin (hereinafter referred to as a female pin) 3 inside.
A connector 350 having a diameter of 60 and fitting into the connector 330 is connected to a battery (not shown). Also,
A connector 335 consisting of a male bottle 345 and a wall portion 336 surrounding it is connected to a separate charging device. The connector 330 has the same structure as the connector 130 of the first embodiment (see FIG. 7), and the connector 335 has the same structure as a conventional general plug. The cross-sectional structure of the corresponding connector 350 is similar to that of the connector 150 of the first embodiment (see FIG. 8).

The charging device of this embodiment is constructed as described above, and its operation will be explained below. To charge the battery, connector 350 is pulled out of connector 330 and inserted into connector 335. After charging is finished, pull out connector 350 from connector 335 and connect connector 3 again.
30, but at this time, first connect the connector 35.
0 fits into the wall portion 331, and then the elastic body 370 fits into the hole 35.
Fits into 2. When further inserted, the elastic body 370 and the tip 361 of the female bottle 360 come into contact, and a current flows through the elastic body 370, which is a resistor, to instantly charge a capacitor in the vehicle controller (not shown). During this time, the elastic body 370 is compressed by the insertion, and the male pin 340 fits into the female pin 360, allowing current to flow without passing through the resistor. This prevents sparks from flying when charging is finished and the battery power is connected to the machine base again. In addition,
When the connector 350 is pulled out from the connector 330 for charging, the elastic body 370 returns to its original shape, and when the connector 350 is inserted into the connector 330 again, the work can be performed without causing sparks, just like this time.

As described above, according to the spark prevention structure of the plug of this embodiment,
Prevents sparks from flying when plugging in,
Unlike in the past, it does not occur that the switch malfunctions and the electromotive force supplied to the vehicle body controller decreases. In addition, by incorporating a resistor into the plug, there is no need to incorporate a means to prevent sparks into the car body controller, which is the case with conventional methods, increasing the degree of design freedom and creating a more compact car body controller. be able to provide it.

<Example 4> This example is a specific example of the second invention. As shown in Fig. 9, the male side plug pin (hereinafter referred to as female pin) 44
0 and a wall portion 431 surrounding it.
30 is connected to various parts of the vehicle body such as a vehicle body controller (not shown), and there is a female plug pin (hereinafter referred to as a female pin) 4 inside.
A connector 450 having a diameter of 60 and fitting into the connector 430 is connected to a battery (not shown). Also,
A connector 435 consisting of a male bottle 445 and a wall portion 436 surrounding it is connected to a separate charging device. Connector 430 and connector 435 have the same structure as a conventional general plug. The cross-sectional structure of the connector 450 corresponding to these is similar to that of the connector 250 of the second embodiment, as shown in FIG. 1O.

The charging device of this embodiment is constructed as described above, and its operation will be explained below. To charge the Panteri, connector 450 is pulled out from connector 430 and inserted into connector 435. After charging is completed, the connector 450 is pulled out from the connector 435 and inserted into the connector 430 again, but at this time, first the main body 451
is fitted into the wall portion 431, and then the male pin 440 is inserted into the hole 452.
to fit. When it is further inserted, the elastic body 470 and the tip of the male bottle 440 come into contact, and a current flows through the elastic body 470, which is a resistor, to instantly charge the capacitor in the vehicle controller 410. During this time, the elastic body 470 is gradually compressed as it is inserted, and the male pin 440 is fitted into the female pin 460, allowing current to flow without passing through a resistor. This prevents sparks from flying when charging is finished and the battery power is connected to the machine base again. Note that when the connector 450 is pulled out for charging, the elastic body 470 returns to its original shape, and when the connector 450 is inserted into the connector 430 again, the work can be performed without causing sparks.

As described above, according to the spark prevention structure of the plug of this embodiment,
Prevents sparks from flying when plugging in,
Unlike in the past, it does not occur that the switch malfunctions and the electromotive force supplied to the vehicle body controller decreases. In addition, by incorporating a resistor into the plug, there is no need to incorporate a means to prevent sparks into the car body controller, which is the case with conventional methods, increasing the degree of design freedom and creating a more compact car body controller. be able to provide it.

(Effects of the Invention) As detailed above, according to the present invention, there is no risk of sparks occurring when plugging or unplugging the charging plug or battery plug during charging work, and even in the event of a failure, charging performance will not deteriorate. Therefore, it is possible to provide a spark prevention structure that does not have any adverse effects such as a decrease in supplied electromotive force.

[Brief explanation of the drawing]

FIG. 1 to FIG. 1O are drawings showing embodiments of the present invention. FIG. 1 is a perspective view showing an outline of the charge controller of embodiment I, and FIG. 2 is a partially enlarged view showing the male plug pin of embodiment 1. A side view, FIG. 3 is a partial sectional view showing the cross-sectional structure of the connector of Example 1, FIG. 4 is a perspective view showing an overview of the charging controller of Example 2, and FIG. 5 is a cross-sectional view of the connector of Example 2. 6 is a perspective view showing the outline of the connector of Example 3, FIG. 7 is a partially enlarged side view showing the male plug pin of Example 3, and FIG. 8 is a cross section of the connector of Example 3. FIG. 9 is a perspective view showing the outline of the connector of Example 4, and FIG. 10 is a partial cross-sectional view showing the cross-sectional structure of the connector of Example 4. FIG. 11 is a conceptual diagram showing an outline of battery charging using an on-vehicle charging device, FIG. 12 is a conceptual diagram showing an outline of battery charging using a separate charging device, and FIG. 13 is a conceptual diagram showing an outline of battery charging using an on-vehicle charging device. Schematic circuit diagram of spark prevention device. FIG. 14 is a schematic circuit diagram of a conventional spark prevention device in a separately placed charging device. 110.210...Charging controller 140.240
... Plug pin (male side) 160.260 ... Plug pin (female side) 170.270 ... Elastic body 330.430 ... Plug pin (male side) 350.45
0...Plug pin (female side) 370.470...Elastic body

Claims (2)

[Claims] (1) A spark prevention structure for a plug, characterized in that a resistor made of an elastic body is attached to a plug pin that connects a power source and a charge controller in order to charge a battery vehicle equipped with a charge controller. (2) A spark prevention structure for a plug, characterized in that a resistor made of an elastic body is attached to a plug pin that connects a battery and a connector that supplies power to various parts of the vehicle body.