JP2016215797A - Vehicular charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular charging device capable of suppressing a decrease in residual quantity of a battery of a vehicle.SOLUTION: First conductive members 2A to 2C are provided from high temperature sections HT1 to HT3 to low temperature sections LT1 to LT3. A pair of second conductive members 3A to 3C and 4A to 4C is connected to the first conductive members 2A to 2C in the high temperature sections HT1 to HT3 and the low temperature sections LT1 to LT3. Charging means 20 charges a battery of a vehicle C using an electric potential difference ΔV1 to ΔV3 generated between the pair of second conductive members 3A to 3C and 4A to 4C by the Seebeck effect, thereby enabling charging of the battery even if the vehicle C is stopped. Therefore, when the electric equipment of the vehicle is used, a decrease in residual quantity of the battery can be suppressed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle charging device for charging a battery of a vehicle.

  In general, a vehicle equipped with an engine that uses gasoline or diesel as a fuel is provided with a battery for operating electrical equipment such as lighting and an air conditioner, and generates electric power with an alternator using the rotation of the engine. It is configured to charge. Therefore, when the power consumption of the electrical equipment increases, the fuel consumption also increases.

  Therefore, an auxiliary power supply device for a vehicle that charges a battery of the vehicle with regenerative electric power has been proposed (see, for example, Patent Document 1). In the auxiliary power supply for a vehicle described in Patent Document 1, regenerative electric power is generated when the vehicle is decelerated by using a regenerative brake, and the battery is charged by the regenerative electric power.

JP 2013-62977 A

  However, since the auxiliary power supply for a vehicle described in Patent Document 1 uses regenerative power, the battery cannot be charged when the vehicle is not running. Further, when the engine is stopped, the battery cannot be charged using the rotation of the engine. Therefore, if the use of the electrical equipment is continued when the engine is stopped, the remaining amount of the battery is reduced. On the other hand, in a vehicle equipped with a battery for operating a traction motor, such as an electric vehicle or a hybrid vehicle, even if the traction motor is stopped, electric equipment can be used with the power of the traction battery, The battery for the electrical equipment can be charged by the battery for use. However, if the use of the electrical equipment is continued, the remaining amount of the battery for traveling decreases, and the remaining amount of the battery for electrical equipment also decreases.

  The objective of this invention is providing the charging device for vehicles which can suppress the fall of the residual amount of the battery of a vehicle.

  In order to solve the above problems and achieve the object, the invention described in claim 1 includes a first conductive member provided from a high temperature portion close to each other to a low temperature portion in the vehicle, the high temperature portion, and the low temperature portion. The battery of the vehicle is charged by a pair of second conductive members that are connected to the first conductive member and made of a material different from that of the first conductive member, and a potential difference generated between the pair of second conductive members. A vehicle charging device.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the first conductive member is provided on both sides of the vehicle body as the high temperature portion and the low temperature portion. is there.

  According to a third aspect of the present invention, in the second aspect of the present invention, the first conductive member is configured such that the outside of the passenger compartment is the high temperature portion with the vehicle body interposed therebetween, and the inner side of the passenger compartment is the low temperature portion. Alternatively, the outside of the engine room is set as the high temperature part and the inside of the engine room is set as the low temperature part with the bonnet in the vehicle body sandwiched, or the side and the lower part of the vehicle body is sandwiched between the vehicles. The outside is the high temperature part, and the vehicle inside and the vehicle floor are provided as the low temperature part.

  The invention described in claim 4 is the invention according to any one of claims 1 to 3, comprising a plurality of power generation units configured by the first conductive member and the pair of second conductive members, The first conductive members in the plurality of power generation units are arranged at different positions.

  According to the first aspect of the present invention, the first conductive member is provided from the high temperature portion to the low temperature portion, and the pair of second conductive members are connected to the first conductive member at each of the high temperature portion and the low temperature portion. Thus, a potential difference is generated between the pair of second conductive members due to the Seebeck effect. The charging means charges the battery of the vehicle using this potential difference, so that the battery can be charged even when the vehicle is stopped. Therefore, when the vehicle electrical equipment is used, it is possible to suppress a decrease in the remaining amount of the battery.

  According to the second aspect of the present invention, since the high temperature part and the low temperature part are located with the vehicle body in between, the temperature difference is likely to increase even if the high temperature part and the low temperature part are close to each other. Therefore, the first conductive member can be reduced in size, and the potential difference generated between the pair of second conductive members can be increased.

  According to the third aspect of the present invention, when the vehicle is irradiated with sunlight, the vehicle interior side, the engine room inner side, and the vehicle underfloor are likely to be shaded, and the temperature difference between the outer side and the inner side of the vehicle body increases. The potential difference generated between the second conductive members can be increased. Further, when the outside of the passenger compartment is a high temperature part and the inside of the passenger compartment is a low temperature part, it is more preferable that the high temperature part and the low temperature part are located across the portion of the vehicle body that constitutes the roof of the vehicle. .

  According to the invention described in claim 4, the charging amount for the vehicle can be increased by including the plurality of power generation units. Further, since the first conductive members in the plurality of power generation units are arranged at different positions, even if there is a first conductive member that is unlikely to cause a temperature difference depending on the direction of sunlight irradiation or the state of the vehicle, the other first A temperature difference is easily generated in the conductive member, and the battery can be charged in accordance with various situations. At this time, in the plurality of first conductive members, it is more preferable that the opposing directions of the high temperature portion and the low temperature portion are different from each other.

1 is a perspective view showing a vehicle provided with a vehicle charging device according to an embodiment of the present invention. It is a side view which shows the principal part of the charging device for vehicles of FIG. It is a side view which shows the other principal part of the charging device for vehicles of FIG.

  Hereinafter, each embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a vehicle C provided with a vehicle charging device 1 according to an embodiment of the present invention, and FIG. 2 is a side view showing a main part of the vehicle charging device 1. These are side views which show the other principal part of the charging device 1 for vehicles.

  As shown in FIG. 1, the vehicle charging device 1 according to the present embodiment is provided in a vehicle C and includes three power generation units 10 </ b> A to 10 </ b> C and one charging unit 20. The vehicle C may be a vehicle including an engine driven by fuel such as gasoline or diesel, an electric vehicle including a motor driven by a traveling battery, an engine and a motor, The vehicle may be a hybrid vehicle, and its driving method is not limited. Moreover, the vehicle C has a battery (not shown) for operating electrical equipment such as lighting and air conditioners. In this embodiment, it is assumed that the vehicle charging device 1 charges a battery for electrical equipment, but when the vehicle C includes a battery for driving (motor driving), the battery for driving is charged. Also good.

  The power generation units 10A to 10C include first conductive members 2A to 2C and a pair of second conductive members 3A to 3C and 4A to 4C, respectively. The first conductive members 2A to 2C and the second conductive members 3A to 3C and 4A to 4C have sufficiently high Seebeck coefficients in a temperature range corresponding to high temperature portions HT1 to HT3 and low temperature portions LT1 to LT3 described later. It is comprised with the member which has, and a material is mutually different. The members constituting the first conductive members 2A to 2C and the second conductive members 3A to 3C and 4A to 4C may be metals or semiconductors.

  The charging unit 20 is provided in common to the power generation units 10A to 10C, is configured with an appropriate relay such as an inverter, and is connected to the battery of the vehicle C. A pair of second conductive members 3 </ b> A to 3 </ b> C and 4 </ b> A to 4 </ b> C are connected to the charging unit 20.

  Hereinafter, the arrangement of the first conductive members 2A to 2C in the power generation units 10A to 10C will be described. First, as shown in FIG. 2, the first conductive member 2 </ b> A is provided so as to penetrate the roof portion R constituting the roof of the vehicle C in the vehicle body B, and one end thereof is located in the high temperature portion HT <b> 1 outside the passenger compartment. The other end is located in the low temperature part LT1 on the vehicle interior side. That is, the first conductive member 2A is provided from the high temperature portion HT1 to the low temperature portion LT1 that are close to each other and sandwich the vehicle body B (roof portion R) from both sides. The second conductive member 3A on the high temperature side is connected to the first conductive member 2A at the high temperature part HT1, and the second conductive member 4A on the low temperature side is connected to the low temperature part LT1.

  As shown in FIG. 2, the first conductive member 2 </ b> B is provided so as to penetrate a bonnet BN that is a part of the vehicle body B, one end is located in the high temperature part HT <b> 2 outside the engine room, and the other end is inside the engine room. It is located in the low temperature part LT2. That is, the first conductive member 2B is provided from the high temperature part HT2 to the low temperature part LT2 that are close to each other and sandwich the vehicle body B (bonnet BN) from both sides. The second conductive member 3B on the high temperature side is connected to the first conductive member 2B in the high temperature part HT2, and the second conductive member 4B on the low temperature side is connected in the low temperature part LT2.

  As shown in FIG. 3, the first conductive member 2 </ b> C is provided so as to penetrate the vicinity of the lower end of the side vehicle body B (the side and lower side portion of the vehicle body B). It is located in the high temperature part HT3 outside the vehicle, and the other end is located in the low temperature part LT3 inside the vehicle body B and below the vehicle floor (below the vehicle floor part F). That is, the first conductive member 2C is provided from the high temperature part HT3 to the low temperature part LT3 that are close to each other and sandwich the vehicle body B from both sides. The first conductive member 2C is connected to the second conductive member 3C on the high temperature side in the high temperature part HT3, and connected to the second conductive member 4C on the low temperature side in the low temperature part LT3.

  By providing the first conductive members 2A to 2C as described above, the side surface of the vehicle body B provided with the first conductive members 2A and 2B and the vehicle body B provided with the first conductive member 2C are provided. And the side surface of each other cross each other. Further, the high temperature part HT1 and the low temperature part LT1 face each other in the vertical direction, the high temperature part HT2 and the low temperature part LT2 face each other in the vertical direction, and the high temperature part HT3 and the low temperature part LT3 appear in the horizontal direction (the width of the vehicle C). Direction).

  Next, the potential difference generated between the pair of second conductive members 3A to 3C and 4A to 4C in the power generation units 10A to 10C will be described. First, in the power generation unit 10A, when the roof portion R is irradiated with sunlight, the roof portion R reflects the light, and the temperature of the upper surface of the roof portion R (outside the passenger compartment) increases. In the vehicle C, the inside and outside of the passenger compartment are thermally insulated by the heat insulating material provided in the vehicle body B, and the temperature rise on the vehicle interior side of the roof portion R is relatively small. Accordingly, a temperature difference ΔT1 is generated between the high temperature part HT1 and the low temperature part LT1, and a potential difference ΔV1 is generated between the high temperature side second conductive member 3A and the low temperature side second conductive member 4A due to the Seebeck effect.

  In the power generation unit 10B, when the bonnet BN is irradiated with sunlight, the bonnet BN reflects the light, and the temperature of the upper surface of the bonnet BN (outside the engine room) increases. The inside of the engine room is shaded, and the temperature rise is smaller than the outside of the engine room. Accordingly, a temperature difference ΔT2 is generated between the high temperature part HT2 and the low temperature part LT2, and a potential difference ΔV2 is generated between the high temperature side second conductive member 3B and the low temperature side second conductive member 4B due to the Seebeck effect.

  In the power generation unit 10C, when the vehicle body B on the side is irradiated with sunlight, the vehicle body B reflects the light, and the temperature outside the vehicle rises. The inside of the vehicle and below the vehicle floor F are shaded, and the temperature rise is smaller than that of the vehicle body B outside the vehicle. Therefore, a temperature difference ΔT3 occurs between the high temperature part HT3 and the low temperature part LT3, and a potential difference ΔV3 occurs between the high temperature side second conductive member 3C and the low temperature side second conductive member 4C due to the Seebeck effect.

  As described above, the potential differences ΔV1 to ΔV3 are generated between the second conductive members 3A to 3C on the high temperature side and the second conductive members 4A to 4C on the low temperature side, and the charging unit 20 uses the potential differences ΔV1 to ΔV3. Then, the battery of vehicle C is charged. In addition, when the temperature difference ΔT1 is generated outside the vehicle interior due to the cooling operation of the air conditioner, the charging unit 20 does not use the potential difference ΔV1 generated in the power generation unit 10A for charging.

  According to this embodiment, there are the following effects. That is, the vehicle C is stopped by the charging means 20 charging the battery of the vehicle C using the potential differences ΔV1 to ΔV3 generated between the pair of second conductive members 3A to 3C and 4A to 4C by the Seebeck effect. Even the battery can be charged. Therefore, when the vehicle electrical equipment is used, it is possible to suppress a decrease in the remaining amount of the battery.

  Further, since the high temperature parts HT1 to HT3 and the low temperature parts LT1 to LT3 are positioned with the vehicle body B interposed therebetween, the temperature difference is large even if the high temperature parts HT1 to HT3 and the low temperature parts LT1 to LT3 are close to each other. Prone. Accordingly, the first conductive members 2A to 2C are reduced in size (that is, the dimension in the direction intersecting the vehicle body B is reduced), and the second conductive members 3A to 3C on the high temperature side and the second conductive member 4A on the low temperature side. The potential differences ΔV1 to ΔV3 generated between ˜4C can be increased.

  Furthermore, charging amount can be increased because the vehicle charging device 1 includes a plurality of (three in the present embodiment) power generation units 10A to 10C. Also, since the first conductive members 2A to 2C are arranged at different positions, even if there is a first conductive member that is unlikely to cause a temperature difference depending on the direction of sunlight irradiation or the state of the vehicle, other first conductive members It is easy to cause a temperature difference in the battery, and the battery can be charged in accordance with various situations.

  Specifically, the irradiation direction of sunlight is directed in the vertical direction, or the sun is positioned on the opposite side of the vehicle body B from the side surface on which the first conductive member 2C is provided. In the case where it is difficult to cause a temperature difference in the first conductive member 2C, the roof portion R and the bonnet BN are irradiated with sunlight, and a temperature difference is likely to occur in the first conductive members 2A and 2B. On the other hand, when the irradiation direction of sunlight faces the vehicle width direction and the sunlight is irradiated to the side surface of the vehicle body B where the first conductive member 2C is provided, the temperature difference between the first conductive members 2A and 2B. However, a temperature difference is likely to occur in the first conductive member 2C. That is, since the side surface of the vehicle body B provided with the first conductive members 2A and 2B and the side surface of the vehicle body B provided with the first conductive member 2C intersect each other, there are various irradiation directions. It can correspond to.

  In addition, when the engine is operating, the temperature in the engine room rises and a temperature difference is less likely to occur in the first conductive member 2B. However, the first conductive members 2A and 2C are affected by the operation of the engine. It is difficult to cause temperature difference.

  In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.

  For example, in the above embodiment, the first conductive members 2A to 2C are provided as the high temperature portions HT1 to HT3 and the low temperature portions LT1 to LT3 on both sides of the vehicle body B, but the high temperature portion and the low temperature portion are the vehicle. The body B may not be sandwiched. For example, the first conductive member may be provided with a portion that is likely to generate heat or accumulate heat by using an electrical device as a high temperature portion, and a portion that is located in the vicinity of the high temperature portion and is easily cooled is a low temperature portion. Further, the high temperature portion and the low temperature portion may be located on the vehicle inner side or the vehicle interior side with respect to the vehicle body B. For example, a portion that is in contact with or close to the high temperature vehicle body B is defined as a high temperature portion. A part near and lower in temperature than the high temperature part may be set as the low temperature part.

  In the above embodiment, the first conductive member 2C is provided on one side surface of the vehicle body B. However, the first conductive member may be provided on both side surfaces. Further, a first conductive member may be provided on a rear side surface of the vehicle body B (for example, a portion constituting the trunk room of the vehicle body), and the first conductive member is irradiated with the shape of the vehicle C or sunlight. It may be provided at an appropriate position according to ease.

  Moreover, in the said embodiment, although the charging device 1 for vehicles shall be provided with the three electric power generation parts 10A-10C, the charging device for vehicles is provided with an appropriate number of electric power generation parts according to the required electric power generation amount. The number of power generation units may be two or four or more, and the vehicle charging device may include only one power generation unit. Moreover, when the vehicle charging device includes a plurality of power generation units, a plurality of charging units corresponding to the respective power generation units may be provided.

  In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described primarily with respect to particular embodiments, but may be configured for the above-described embodiments without departing from the scope and spirit of the invention. Various modifications can be made by those skilled in the art in terms of materials, quantity, and other detailed configurations. Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

DESCRIPTION OF SYMBOLS 1 Vehicle charging device 10A-10C Electric power generation part 2A-2C 1st electrically-conductive member 3A-3C 2nd electrically-conductive member 4A-4C 2nd electrically-conductive member 20 Charging means C Vehicle B Vehicle body BN Bonnet HT1-HT3 High temperature part LT1-LT3 Low temperature Part

Claims (4)

A first conductive member provided from a high-temperature part to a low-temperature part adjacent to each other in the vehicle;
A pair of second conductive members connected to the first conductive member in each of the high temperature part and the low temperature part and made of a material different from the first conductive member;
And a charging means for charging the vehicle battery by a potential difference generated between the pair of second conductive members.   2. The vehicle charging device according to claim 1, wherein the first conductive member is provided on both sides of the vehicle body as the high temperature portion and the low temperature portion.   The first conductive member may be configured such that the outside of the passenger compartment is the high temperature part and the inside of the passenger compartment is the low temperature part with the vehicle body interposed therebetween, or the outside of the engine room is the high temperature part with the bonnet in the vehicle body interposed therebetween. In addition, the inside of the engine room is set as the low temperature portion, or the vehicle outside is set as the high temperature portion with the side and lower side portions of the vehicle body interposed therebetween, and the vehicle inside and the vehicle floor are provided as the low temperature portion. The vehicle charging device according to claim 2, wherein the vehicle charging device is provided. A plurality of power generation units configured by the first conductive member and the pair of second conductive members;
The vehicle charging device according to any one of claims 1 to 3, wherein the first conductive members of the plurality of power generation units are arranged at different positions.

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