JP5716344B2 - Gas filling system, gas filling method, gas filling device and tank mounting device - Google Patents

Description

  The present invention relates to a technology for filling a gas tank with a gas from a gas supply device (gas filling device), and more particularly to a technology for filling a gas into a plurality of gas tanks from a gas station.

  For example, a technique disclosed in Patent Document 1 is known as a method of filling a plurality of gas tanks with gas. In this technique, for a fuel cell vehicle having a plurality of fuel tanks for storing fuel gas such as hydrogen, the plurality of fuel tanks are simultaneously filled with hydrogen from a hydrogen station. At that time, the pressure and temperature in each fuel tank are detected, and the opening and closing of the valve that connects between the hydrogen station and each fuel tank is controlled according to the pressure and temperature in the fuel tank. Each fuel tank is filled with hydrogen while satisfying specifications such as tank temperature, pressure, and filling rate (hereinafter collectively referred to as “filling specifications”).

JP 2004-084808 A JP 2005-155869 A

  However, as described above, each fuel tank is provided with a sensor for monitoring temperature and pressure in order to fill hydrogen while satisfying specifications such as temperature, pressure, and filling rate. The manufacturing cost of the device is very high, and it is possible to fill a plurality of fuel tanks with fuel gas at the same time while satisfying the fuel gas filling specifications with a lower cost and simpler configuration. It is hoped that.

  Accordingly, an object of the present invention is to provide a technique capable of simultaneously filling a plurality of fuel tanks with a fuel gas with a simple configuration while satisfying the fuel gas filling specifications.

SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.
[Form 1]
A gas filling system for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks,
The tank mounting device is:
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
The gas filling device includes:
A gas supply unit for supplying fuel gas to the gas filling path;
A gas filling device side communication device for communicating with the tank mounting device side communication device;
A control unit for controlling a supply condition of fuel gas supplied from the gas supply unit to the gas filling path;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
The temperature information of the first tank detected by the first temperature sensor is used as tank information of the tank mounting device, and the gas filling device via the tank mounting device side communication device and the gas filling device side communication device. Sent to
The controller is
The temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas supply unit, and the pressure sensor provided in the gas filling path are detected. The tank device side gas pressure, which is transmitted as the tank information together with the temperature information of the first tank, and the known gas pressure sent by the gas filling device The fuel gas supply conditions are controlled so that the filling rate of the first tank calculated based on the one gas pressure does not exceed a specified filling rate, and the plurality of tank mounting devices A gas filling system for performing filling of fuel gas into a tank of the tank.
In the gas filling system, among the plurality of tanks, the temperature of the first tank having the best heat dissipation and the fastest gas filling rate is monitored, and the temperature and the pressure sensor provided in the gas supply unit are provided. Gas pressure on the gas filling device side to be detected, gas pressure on the tank device side provided in the gas filling path, tank device side gas pressure transmitted in the tank information, and known gas sent by the gas filling device The filling rate of the first tank is determined based on any one of the pressure and the gas pressure, and the filling of the gas is controlled by controlling the obtained filling rate so as not to exceed the specified value of the filling rate. Since it can be performed, it is possible to perform filling so that a plurality of tanks do not exceed a prescribed value of the filling rate. Therefore, it is not necessary to monitor the pressure and temperature of each of the plurality of tanks as in the prior art, and the fuel gas is simultaneously filled into the plurality of tanks with a simple configuration while satisfying the fuel gas filling specifications. be able to.
[Form 2]
A gas filling device for supplying fuel gas to a tank mounting device having a plurality of tanks,
A gas supply unit for supplying fuel gas to the tank mounting device;
A gas filling device side communication device for communicating with the tank mounting device;
A control unit for controlling supply conditions of fuel gas supplied from the gas supply unit to the tank mounting device;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
Among the plurality of tanks, temperature information of the first tank with the best heat dissipation is transmitted as tank information from the tank mounting device to the gas filling device side communication device,
The controller is
The temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas supply unit, and the pressure sensor provided on the tank device detect One of the tank device side gas pressure and the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, and the known gas pressure sent out by the gas filling device The supply rate of the fuel gas is controlled so that the filling rate of the first tank calculated based on one gas pressure does not exceed a specified filling rate, and the plurality of tank mounting devices A gas filling device that performs filling of fuel gas into a tank.
By using the gas filling device, the gas filling system can be realized.
[Form 3]
A tank mounting device having a plurality of tanks and capable of supplying fuel gas to the plurality of tanks by a gas filling device,
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
The temperature information of the first tank detected by the first temperature sensor is transmitted as tank information to the gas filling device via the tank mounting device side communication device,
In the gas filling device, the temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas filling device, and the gas filling path are provided. The tank device side gas pressure detected by the pressure sensor, the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, and the known gas pressure sent by the gas filling device Fuel gas is supplied from the gas filling device so that the filling rate of the first tank calculated based on one of the gas pressures does not exceed a specified filling rate. A tank mounting device characterized by that.
The gas filling system can be realized by using the tank mounting device.
[Form 4]
A gas filling method for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks for storing fuel gas,
In the tank mounting device, the plurality of tanks include a tank provided with a temperature sensor that detects a temperature of the tank and a tank not provided with a temperature sensor, and among the plurality of tanks, heat is most dissipated. The temperature of the first tank with good characteristics is detected, and the detected temperature information of the first tank is transmitted to the gas filling device as tank information,
In the gas filling device, the temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas filling device, and the gas tank device A tank device side gas pressure detected by a pressure sensor, the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, a known gas pressure sent by the gas filling device, The filling rate of the first tank is calculated based on any one of the gas pressures, and from the gas filling device to the tank mounting device so that the calculated filling rate does not exceed the specified filling rate. A gas filling method characterized by controlling supply conditions of fuel gas supplied to the plurality of tanks and filling the plurality of tanks with gas.
According to this gas filling method, it is not necessary to monitor the pressure and temperature of each of the plurality of tanks as in the prior art, and the plurality of tanks can be configured with a simple configuration while satisfying the fuel gas filling specifications (regulations). The fuel gas can be filled simultaneously.

[Application Example 1]
A gas filling system for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks,
The tank mounting device is:
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
The gas filling device includes:
A gas supply unit for supplying fuel gas to the gas filling path;
A gas filling device side communication device for communicating with the tank mounting device side communication device;
A control unit for controlling a supply condition of fuel gas supplied from the gas supply unit to the gas filling path;
With
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
Tank information including temperature information of the first tank detected by the first temperature sensor is transmitted to the gas filling device via the tank mounting device side communication device and the gas filling device side communication device,
The controller is
The supply condition of the fuel gas is controlled so that the filling rate of the first tank calculated based on at least the temperature information of the first tank does not exceed a specified filling rate, and the tank mounting device A gas filling system that performs filling of fuel gas into a plurality of tanks.
In the gas filling system, among the plurality of tanks, the temperature of the first tank having the best heat dissipation and the fastest gas filling rate is monitored, and the filling rate of the first tank is determined based on the temperature. Since it is possible to perform gas filling by controlling so that the obtained filling rate does not exceed the specified value of the filling rate, filling is performed so that a plurality of tanks do not exceed the specified value of the filling rate. It is possible. Therefore, it is not necessary to monitor the pressure and temperature of each of the plurality of tanks as in the prior art, and the fuel gas is simultaneously filled into the plurality of tanks with a simple configuration while satisfying the fuel gas filling specifications. be able to.

[Application Example 2]
A gas filling system according to Application Example 1,
Of the plurality of tanks, a second temperature sensor that detects the temperature of the second tank is also provided in the second tank having the lowest heat dissipation.
In addition to the temperature information of the first tank, the temperature information of the second tank detected by the second temperature sensor is also used as the tank information as the tank mounting device side communication device and the gas filling device side communication device. Is sent to the gas filling device via
The controller is
Based on the temperature information of the second tank, so that the temperature of the second tank does not exceed the prescribed temperature value, and the filling rate of the first tank does not exceed the prescribed filling rate value, A gas filling system that controls the fuel gas supply condition to fill the plurality of tanks of the tank mounting device.
In the gas filling system, among the plurality of tanks, the temperature of the second tank having the lowest heat dissipation is monitored together with the temperature of the first tank having the best heat dissipation and the fastest gas filling rate. The temperature of the tank 2 was controlled so as not to exceed the tank temperature specified in the gas filling specification, and the filling rate of the first tank was obtained based on the temperature of the first tank. Gas filling can be performed by controlling the filling rate so as not to exceed the specified value of the filling rate, so that the plurality of tanks do not exceed the specified temperature value, and the plurality of tanks may It is possible to carry out filling so as not to exceed a specified value.

[Application Example 3]
A gas filling device for supplying fuel gas to a tank mounting device having a plurality of tanks,
A gas supply unit for supplying fuel gas to the tank mounting device;
A gas filling device side communication device for communicating with the tank mounting device;
A control unit for controlling supply conditions of fuel gas supplied from the gas supply unit to the tank mounting device;
With
Among the plurality of tanks, temperature information of the first tank with the best heat dissipation is transmitted as tank information from the tank mounting device to the gas filling device side communication device,
The controller is
The supply condition of the fuel gas is controlled so that the filling rate of the first tank calculated based on at least the temperature information of the first tank does not exceed a specified filling rate, and the tank mounting device A gas filling apparatus that performs filling of fuel gas into a plurality of tanks.
By using the gas filling device, the gas filling system can be realized.

[Application Example 4]
A gas filling device according to Application Example 3,
In addition to the temperature information of the first tank, among the plurality of tanks, the temperature information of the second tank having the lowest heat dissipation is also transmitted as tank information from the tank mounting device to the gas filling device side communication device. Sent
The controller is
Based on the temperature information of the second tank, so that the temperature of the second tank does not exceed the prescribed temperature value, and the filling rate of the first tank does not exceed the prescribed filling rate value, A gas filling apparatus, wherein the fuel gas supply condition is controlled to fill the plurality of tanks of the tank mounting apparatus with fuel gas.
By using the gas filling device, the gas filling system can be realized.

[Application Example 5]
A tank mounting device having a plurality of tanks and capable of supplying fuel gas to the plurality of tanks by a gas filling device,
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
Tank information including temperature information of the first tank detected by the first temperature sensor is transmitted to the gas filling device via a tank mounting device side communication device,
Based on the temperature information of the first tank among the transmitted tank information, the fuel gas is supplied from the gas filling device so that the filling rate of the first tank does not exceed a specified filling rate. A tank mounting device characterized by that.
The gas filling system can be realized by using the tank mounting device.

[Application Example 6]
The tank mounting device according to Application Example 5,
Of the plurality of tanks, a second temperature sensor that detects the temperature of the second tank is also provided in the second tank having the lowest heat dissipation.
In addition to the first temperature information, the temperature information of the second tank detected by the second temperature sensor is also transmitted as the tank information to the gas filling device via the tank mounting device side communication device,
Among the tank information transmitted, based on the temperature information of the second tank, fuel gas is supplied from the gas filling device so that the temperature of the second tank does not exceed the temperature regulation value, Based on temperature information of the first tank, a fuel gas is supplied from the gas filling device so that the filling rate of the first tank does not exceed a specified filling rate. .
The gas filling system can be realized by using the tank mounting device.

[Application Example 7]
A gas filling method for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks for storing fuel gas,
In the tank mounting device, the temperature of the first tank having the best heat dissipation among the plurality of tanks is detected, and the detected temperature information of the first tank is transmitted to the gas filling device,
In the gas filling device, the filling rate of the first tank is calculated based on at least the temperature information of the first tank, and from the gas filling device so that the calculated filling rate does not exceed a specified filling rate. A gas filling method comprising controlling a supply condition of fuel gas to be supplied to the tank mounting device, and filling the plurality of tanks with gas.
According to this gas filling method, it is not necessary to monitor the pressure and temperature of each of the plurality of tanks as in the prior art, and the plurality of tanks can be configured with a simple configuration while satisfying the fuel gas filling specifications (regulations). The fuel gas can be filled simultaneously.

[Application Example 8]
A gas filling method according to application example 7,
In the tank mounting device, the temperature of the second tank having the lowest heat dissipation among the plurality of tanks is detected, and the detected temperature information of the second tank is also transmitted to the gas filling device,
In the gas filling device, based on the temperature information of the second tank, the temperature of the second tank does not exceed a specified temperature value, and the calculated filling rate does not exceed a specified filling rate value. As described above, the gas filling method is characterized by controlling the supply conditions of the fuel gas supplied from the gas filling device to the tank mounting device and filling the plurality of tanks with gas.
Even with this gas filling method, it is not necessary to monitor the pressure and temperature of each of the plurality of tanks as in the prior art, and the fuel gas tank filling specifications (regulations) are satisfied, and the plurality of tanks can be easily configured. On the other hand, the fuel gas can be filled at the same time.

  In addition, this invention can be implement | achieved with various forms, for example, can be implement | achieved with various forms, such as a gas filling system, a gas filling method, a gas filling apparatus, and a tank mounting apparatus. .

It is explanatory drawing which shows the structure of the hydrogen filling system as 1st Example. It is explanatory drawing shown about the hydrogen filling process in the hydrogen filling system as 1st Example. It is explanatory drawing which shows the structure of the hydrogen filling system as 2nd Example. It is explanatory drawing shown about the hydrogen filling process in the hydrogen filling system as 2nd Example.

Embodiments of the present invention will be described in the following order based on examples.
A. First embodiment:
B. Second embodiment:
C. Variation:

A. First embodiment:
A1. System configuration:
FIG. 1 is an explanatory diagram showing a configuration of a hydrogen filling system as a first embodiment. The hydrogen filling system is a system in which the hydrogen station 10 supplies hydrogen as a fuel gas to the vehicle 20 and fills a fuel tank provided in the vehicle 20.

  The hydrogen station 10 includes a storage tank 100, a compressor 110, a delivery valve 120, a delivery nozzle 130, a station side communication device 140, and a station side controller 150. In addition, a pressure sensor Ps for detecting the pressure of the gas to be delivered is provided in the delivery pipe connecting the delivery valve 120 and the delivery nozzle 130.

  The storage tank 100 of the hydrogen station 10 stores hydrogen to be supplied to the vehicle 20. The delivery valve 120 adjusts the delivery, blocking, and delivery amount of hydrogen delivered from the compressor 110 by changing the degree of opening and closing of the valve. The compressor 110 compresses the hydrogen stored in the storage tank 100 so that the pressure increase speed of the hydrogen supplied to the vehicle 20 becomes the pressure increase speed defined as the gas filling specification. The station-side controller 150 controls the station-side communication device 140 to store tank information including information such as the tank temperature and hydrogen pressure (hereinafter also referred to as “vehicle-side hydrogen pressure”) sent from the vehicle 20. get. Further, information on the hydrogen pressure detected from the pressure sensor Ps (hereinafter also referred to as “station-side hydrogen pressure”) is acquired. Then, the station-side controller 150 controls the operations of the compressor 110 and the delivery valve 120 so as to deliver hydrogen to the vehicle 20 in accordance with the preset gas filling specifications based on the acquired information.

  The vehicle 20 includes a receptacle 200, first to third vehicle-mounted tanks 210 to 230, a vehicle-side communication device 240, and a vehicle-side controller 260. Further, between the receptacle 200 and the first to third in-vehicle tanks 210 to 230, a filling path 250 for supplying the hydrogen supplied from the hydrogen station 10 to the first to third in-vehicle tanks 210 to 230 for filling. Is provided. The filling path 250 includes a first path 252 to the first in-vehicle tank 210, a second in-vehicle tank 220, and a third in-vehicle tank via a branch pipe 250T that branches the path from the receptacle 200 in two directions. The second path 254 is branched into a second path 254 to 230, and the second path 254 is further branched into a third path 256 to the second vehicle tank 220 and a fourth path 258 to the third vehicle tank. ing. In addition, the pressure of the gas which flows through each path | route becomes equal. The first to third in-vehicle tanks 210 to 230 store hydrogen, which is a fuel gas supplied via the receptacle 200 and the filling path 250, and supply it to a fuel cell (not shown). The hydrogen stored in the first to third vehicle-mounted tanks 210 to 230 is supplied and consumed in the same manner to a fuel cell (not shown).

  The first to third vehicle-mounted tanks 210 to 230 have the first heat-release tank 210 having the best heat dissipation, the second vehicle-mounted tank 220 has the lowest heat dissipation, and the third vehicle-mounted tank 210. Assume that 230 has intermediate heat dissipation. The heat dissipation of each tank can be easily distinguished by, for example, filling each tank with gas under the same conditions and examining the difference in temperature drop.

  The first vehicle-mounted tank 210 is provided with a temperature sensor TA. Further, the branch rod 250T is provided with a pressure sensor Pm for detecting the pressure of the supplied hydrogen (vehicle-side hydrogen pressure). Information on the temperature detected by the temperature sensor TA and the pressure detected by the pressure sensor Pm is transmitted from the vehicle-side controller 260 to the station-side controller 150 via the vehicle-side communication device 240 and the station-side communication device 140. As the station side communication device 140 and the vehicle side communication device 240, for example, an infrared communication device can be used. However, the present invention is not limited to this, and may be another wireless communication device or a wired communication device.

  In the hydrogen filling system described above, as described below, hydrogen is supplied from the hydrogen station 10 to the vehicle 20, and the first to third vehicle tanks 210 to 230 provided in the vehicle 20 are charged with hydrogen. Executed.

A2. Hydrogen filling process:
FIG. 2 is an explanatory diagram showing a hydrogen filling process in the hydrogen filling system as the first embodiment. This hydrogen filling process is executed by the station-side controller 150. Here, the specifications of the tank are defined by the law that the temperature is 85 ° C. or less, the filling rate is 100% or less, and the tank internal pressure is 87.5 MPa or less. In the SAE (Society of Automotive Engineers) standard, as a specification for filling hydrogen, a pressure increase rate is set so as not to exceed 85 ° C. which is a tank temperature specification. Therefore, in this embodiment, the station-side controller 150 controls the operations of the compressor 110 and the delivery valve 120 according to this rule. Therefore, in the hydrogen filling process described below, basically, the temperature of the first to third vehicle tanks 210 to 230 of the vehicle 20 does not exceed 85 ° C., which is defined as the tank temperature specification. Based on the premise, it is designed from the viewpoint that the filling rate should be monitored so as not to exceed 100%.

  When the process is started, first, the station-side controller 150 controls the compressor 110 and the delivery valve 120 so as to achieve a pressure increase speed according to a preset rule, and supplies hydrogen to the vehicle 20 via the delivery nozzle 130. The first to third vehicle tanks 210 to 230 are filled by supplying hydrogen to the vehicle 20 (step S110).

  At this time, the station-side controller 150 includes information on the station-side hydrogen pressure indicated by the pressure sensor Ps, temperature information on the temperature sensor TA provided in the first vehicle-mounted tank 210, and information on the vehicle-side hydrogen pressure indicated by the pressure sensor Pm. Are acquired (step S120).

Then, it is determined whether or not the vehicle-side hydrogen pressure of the pressure sensor Pm is abnormal (step S130). For example, in a normal state, the vehicle-side hydrogen pressure indicated by the pressure sensor Pm must be lower than the station-side hydrogen pressure indicated by the pressure sensor Ps due to pressure loss or the like. If the vehicle-side hydrogen pressure is higher than the station-side hydrogen pressure, an abnormality has occurred in any of the receptacle 200 on the vehicle 20 side, the filling path 250, and the first to third vehicle tanks 210 to 230. There is a high possibility. Therefore, in such a case, the station-side controller 150 stops the operation of the compressor 110 and the delivery valve 120, stops the delivery of hydrogen, and stops the supply of hydrogen to the vehicle 20, thereby Is stopped (step S140). On the other hand, when the vehicle-side hydrogen pressure indicated by the pressure sensor Pm is normal, the station-side controller 150 calculates the filling rate (SOC) based on the following calculation formula (step S150).
SOC [%] = {(Z ₀ × T ₀ × P ₁ ) / (Z ₁ × T ₁ × P ₀ )} × 100 (1)
In the above equation (1), Z represents a compression coefficient, T represents a temperature, P represents a pressure, a subscript “0” represents a reference value, and a subscript “1” represents an acquired value during filling. In this example, it is assumed that Z ₀ = Z ₁ = 0.99, T ₀ = 15 ° C., and P ₀ = 70 MPa are used as reference values. As the retrieved value T ₁ of the during filling, the temperature of the temperature sensor TA detects provided heat dissipation of the best first vehicle tank 210 is used. Therefore, the calculated filling rate SOC is the filling rate of the first vehicle-mounted tank 210 with the best heat dissipation. Further, as the acquired value P ₁ during filling, the pressure of hydrogen delivered from the hydrogen station 10, that is, the station side hydrogen pressure detected by the pressure sensor Ps is used, and a known pressure loss or the like is calculated from the station side hydrogen pressure. The removed value is used. This is because the vehicle-side hydrogen pressure detected by the pressure sensor Pm of the vehicle 20 is highly dependent on the vehicle and has low accuracy, and therefore the highly reliable station-side hydrogen pressure detected by the pressure sensor Ps of the hydrogen station 10 is used. It is what.

  And it is judged whether the filling rate (SOC) of the 1st vehicle-mounted tank 210 is less than 100% (step S160). When the filling rate of the first on-vehicle tank 210 is less than 100%, it is determined that there is no problem in the filling rate of any tank, and the above hydrogen filling process is repeated. On the other hand, when the filling rate of the first on-vehicle tank 210 reaches 100%, the station-side controller 150 stops the operation of the compressor 110 and the delivery valve 120 to stop the delivery of hydrogen and to the vehicle 20. By stopping the supply of hydrogen, hydrogen filling is completed (step S170), and the hydrogen filling process is terminated.

  As described above, in the hydrogen filling process of this embodiment, the filling rate of the first on-vehicle tank 210 with the best heat dissipation is monitored, and filling is completed when the filling rate reaches 100%. .

  Here, as can be seen from the above equation (1), the filling rate is determined by the temperature of the tank to be filled and the pressure of the gas to be filled (here, hydrogen), and the higher the tank temperature, the higher the gas pressure. The higher the is, the higher. Therefore, since the filling rate of the tank with the best heat dissipation becomes the fastest, if we monitor that the filling rate of this tank does not exceed 100%, there is no concern about the filling rate of other tanks exceeding 100%. It is because it is thought that there is not. Further, in this embodiment, since it is assumed that gas is charged from the hydrogen station 10 to the vehicle 20 in accordance with the SAE standard, it is considered that the tank temperature specification does not basically exceed 85 ° C. .

  As described above, according to the present embodiment, the filling rate of 100% is satisfied from the hydrogen station 10 to the plurality of on-vehicle tanks 210 to 230 while satisfying the tank temperature specification of 85 ° C. It is possible to fill with hydrogen so as not to exceed. Therefore, unlike the prior art, it is not necessary to control the filling of hydrogen by monitoring the temperature and pressure for each of the plurality of vehicle-mounted tanks. That is, in this embodiment, it is possible to simultaneously fill a plurality of tanks with a gas with a simple configuration while satisfying the gas filling specifications.

  If the temperature of the first in-vehicle tank 210 exceeds the specification temperature 85 ° C. for some reason, for example, hydrogen is transmitted from the vehicle-side controller 260 via the vehicle-side communication device 240 and the station-side communication device 140. The station side controller 150 may stop filling by transmitting an ABORT (filling stop) signal to the station 10 side. Also, in the station-side controller 150, when the temperature information of the first in-vehicle tank 210 acquired in step S120 of FIG. 2 exceeds 85 ° C., the filling process is stopped separately from the normal process. May be.

B. Second embodiment:
B1. System configuration:
FIG. 3 is an explanatory diagram showing the configuration of the hydrogen filling system as the second embodiment. The hydrogen filling system of the second embodiment is also the same in that it is composed of the hydrogen station 10 and the vehicle 20. However, the temperature sensor TB is also provided in the second vehicle-mounted tank 220 having the worst heat dissipation among the first to third vehicle-mounted tanks 210 to 230 provided in the vehicle 20, and the temperature of the second vehicle-mounted tank 220 is increased. This information is also transmitted to the hydrogen station 10 via the vehicle side communication device 240 and the station side communication device 140. And in order to respond | correspond to this, the vehicle side controller 260 is made into the vehicle side controller 260B. Further, as will be described later, the hydrogen filling process is also executed using the temperature information of the second vehicle-mounted tank 220, and the station-side controller 150 is used as the station-side controller 150B to cope with this.

  In the hydrogen filling system of the second embodiment, as described below, hydrogen is supplied from the hydrogen station 10 to the vehicle 20, and the first to third vehicle tanks 210 to 230 provided in the vehicle 20 are filled with hydrogen. Is executed. In the first embodiment, the hydrogen filling system is premised on the hydrogen filling system according to the SAE standard in which the pressure increase rate for not exceeding the tank temperature specification of 85 ° C. is specified as the specification for filling the hydrogen. The hydrogen filling process described below corresponds to the case where this standard is not followed.

B2. Hydrogen filling process:
FIG. 4 is an explanatory view showing the hydrogen filling process in the hydrogen filling system as the second embodiment. This hydrogen filling process is also executed by the station-side controller 150B, as in the first embodiment.

  When the processing is started, first, the controller 150B controls the compressor 110 and the delivery valve 120 so as to obtain a pressure increase speed in accordance with a preset rule, and sends out hydrogen to the vehicle 20 via the delivery nozzle 130. The first to third vehicle tanks 210 to 230 are filled by supplying hydrogen to the vehicle 20 (step S210). However, the pressure increase rate in this example is different from that in the first example as appropriate according to the specifications of the tank as stipulated by law such as a temperature of 85 ° C. or less, a filling rate of 100% or less, and a tank internal pressure of 87.5 MPa or less. It is set by designing.

  At this time, the station-side controller 150B acquires information on the hydrogen pressure (station-side hydrogen pressure) sent from the hydrogen station 10 from the pressure sensor Ps. In addition, the temperature information of the first and second vehicle-mounted tanks 210 and 220 detected by the first and second temperature sensors TA and TB, and the pressure of hydrogen flowing through the branch rod 250T detected by the pressure sensor Pm ( Information on the vehicle-side hydrogen pressure is acquired from the vehicle-side controller 260B via the vehicle-side communication device 240 and the station-side communication device 140 (step S220).

  Then, similarly to the first embodiment (see step S130 in FIG. 2), it is determined whether or not the vehicle-side hydrogen pressure of the pressure sensor Pm is abnormal (step S230). When the vehicle-side hydrogen pressure is abnormal, the station-side controller 150B stops the operation of the compressor 110 and the delivery valve 120 and sends out hydrogen as in the first embodiment (see step S140 in FIG. 2). The hydrogen supply is stopped by stopping the supply of hydrogen to the vehicle 20 (step S240). On the other hand, when the vehicle-side hydrogen pressure indicated by the pressure sensor Pm is normal, the station-side controller 150B further determines that the temperature indicated by the temperature sensor TB is the allowable temperature Tr of the tank (here, as in the first embodiment, It is determined whether the temperature is less than 85 ° C., which is equal to the specified temperature specification (step S250). The second vehicle-mounted tank 220 provided with the temperature sensor TB is the tank having the worst heat dissipation. Therefore, if the temperature is monitored so as not to exceed the allowable temperature Tr (= 85 ° C.), This is because the tank is considered not to exceed the prescribed temperature specification of 85 ° C. Therefore, even when the temperature indicated by the temperature sensor TB, that is, the temperature of the second on-vehicle tank 220 having the worst heat dissipation becomes equal to or higher than the allowable temperature Tr, the station-side controller 150B can Hydrogen supply is stopped by stopping the operation and stopping the supply of hydrogen and stopping the supply of hydrogen to the vehicle 20 (step S240). On the other hand, if the temperature of the temperature sensor TB is less than the allowable temperature Tr, the station-side controller 150B determines that there is no problem with the temperature of the tank, and as in the first embodiment (step S150 in FIG. 2), heat dissipation. The filling rate (SOC) of the first in-vehicle tank 210 is calculated according to the characteristics (step S260). As the calculation formula, the above formula (1) can be used as in the first embodiment.

  And it is judged whether the filling rate (SOC) of the 1st vehicle-mounted tank 210 is less than 100% (step S270). When the filling rate of the first on-vehicle tank 210 is less than 100%, it is determined that there is no problem in the filling rate of any tank, and the above hydrogen filling process is repeated. On the other hand, when the filling rate of the first vehicle-mounted tank 210 reaches 100%, the station-side controller 150B stops the operation of the compressor 110 and the delivery valve 120 to stop the delivery of hydrogen to the vehicle 20. By stopping the hydrogen supply, hydrogen filling is completed (step S280), and the hydrogen filling process is terminated.

  As described above, in the hydrogen filling process of the present embodiment, the temperature of the second vehicle tank 220 having the worst heat dissipation is monitored, and if the temperature is lower than the allowable temperature, the filling process is continued. Stops the filling process. This is because it is considered that the temperature of the other tank does not exceed the allowable temperature unless the temperature of the tank having the lowest heat dissipation performance exceeds the allowable temperature. Also, in the hydrogen filling process of this embodiment, as in the case of the first embodiment, the filling rate of the first onboard tank 210 with the best heat dissipation is monitored, and the processing is continued when the filling rate is less than 100%. The filling is completed when the filling rate reaches 100%. As described in the first embodiment, since the filling rate of the tank with the best heat dissipation becomes the fastest, the filling rate of other tanks can be monitored if the filling rate of this tank does not exceed 100%. This is because there is no concern that the rate will exceed 100%.

  As described above, according to this embodiment, the filling rate of the plurality of on-vehicle tanks 210 to 230 mounted on the vehicle 20 does not exceed 100% while satisfying the allowable temperature of the tank from the hydrogen station 10. As such, it can be filled with hydrogen. Therefore, unlike the prior art, it is not necessary to control the filling of hydrogen by monitoring the temperature and pressure for each of the plurality of vehicle-mounted tanks. That is, in this embodiment, it is possible to simultaneously fill a plurality of tanks with a gas with a simple configuration while satisfying the gas filling specifications.

C. Variation:
In addition, elements other than the elements claimed in the independent claims among the constituent elements in each of the above embodiments are additional elements and can be omitted as appropriate. The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the scope of the invention.

  In the above embodiment, the case where three vehicle tanks are filled with hydrogen, which is fuel gas, is described as an example. However, the present invention is not limited to this. An in-vehicle tank may be used. It may be a case where a plurality of vehicle-mounted tanks are filled with hydrogen, which is a fuel gas.

In the above-described embodiment, the pressure of the pressure sensor Ps provided in the hydrogen station 10 is used as the pressure used when determining the filling rate ( SOC ). However, the pressure of the pressure sensor Pm provided in the vehicle 20 is used as the vehicle. It may be received and used via the side communication device 240 and the station side communication device 140. If the pressure profile of the gas to be sent is known, the known pressure may be used for calculating the filling rate without using the pressure of the pressure sensor Ps .

  Further, in the above-described embodiment, a hydrogen filling system that fills a tank-equipped vehicle equipped with a hydrogen tank such as a vehicle equipped with a fuel cell system (also referred to as a fuel cell vehicle) from a hydrogen station has been described as an example. . However, the present invention is not limited to this, and various tank mounting devices such as a moving body on which a fuel gas tank is mounted may be used. Further, the fuel gas station may be a moving body, and may be a gas filling system that fills the fuel gas tank of the tank mounting device in which the fuel gas tank is mounted, such as an installation type fuel cell system. .

DESCRIPTION OF SYMBOLS 10 ... Hydrogen station 20 ... Vehicle 100 ... Storage tank 110 ... Compressor 120 ... Delivery valve 130 ... Delivery nozzle 140 ... Station side communication apparatus 150 ... Station side controller 150B ... Station side controller 200 ... Receptacle 210 ... 1st vehicle-mounted tank 220 ... 2nd vehicle-mounted tank 230 ... 3rd vehicle-mounted tank 240 ... Vehicle side communication apparatus 250 ... Filling path 250T ... Branch pipe 252 ... 1st path 254 ... 2nd path 256 ... 3rd path 258 ... 4th Route 260: Vehicle side controller 260B ... Vehicle side controller TA ... Temperature sensor TB ... Temperature sensor Ps ... Pressure sensor Pm ... Pressure sensor

Claims (8)

A gas filling system for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks,
The tank mounting device is:
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
The gas filling device includes:
A gas supply unit for supplying fuel gas to the gas filling path;
A gas filling device side communication device for communicating with the tank mounting device side communication device;
A control unit for controlling a supply condition of fuel gas supplied from the gas supply unit to the gas filling path;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
The temperature information of the first tank detected by the first temperature sensor is used as tank information of the tank mounting device, and the gas filling device via the tank mounting device side communication device and the gas filling device side communication device. Sent to
The controller is
The temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas supply unit, and the pressure sensor provided in the gas filling path are detected. The tank device side gas pressure, which is transmitted as the tank information together with the temperature information of the first tank, and the known gas pressure sent by the gas filling device The fuel gas supply conditions are controlled so that the filling rate of the first tank calculated based on the one gas pressure does not exceed a specified filling rate, and the plurality of tank mounting devices A gas filling system for performing filling of fuel gas into a tank of the tank. The gas filling system according to claim 1,
Of the plurality of tanks, a second temperature sensor that detects the temperature of the second tank is also provided in the second tank having the lowest heat dissipation.
In addition to the temperature information of the first tank, the temperature information of the second tank detected by the second temperature sensor is also used as the tank information as the tank mounting device side communication device and the gas filling device side communication device. Is sent to the gas filling device via
The controller is
Based on the temperature information of the second tank, so that the temperature of the second tank does not exceed the prescribed temperature value, and the filling rate of the first tank does not exceed the prescribed filling rate value, A gas filling system that controls the fuel gas supply condition to fill the plurality of tanks of the tank mounting device. A gas filling device for supplying fuel gas to a tank mounting device having a plurality of tanks,
A gas supply unit for supplying fuel gas to the tank mounting device;
A gas filling device side communication device for communicating with the tank mounting device;
A control unit for controlling supply conditions of fuel gas supplied from the gas supply unit to the tank mounting device;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
Among the plurality of tanks, temperature information of the first tank with the best heat dissipation is transmitted as tank information from the tank mounting device to the gas filling device side communication device,
The controller is
The temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas supply unit, and the pressure sensor provided on the tank device detect One of the tank device side gas pressure and the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, and the known gas pressure sent out by the gas filling device The supply rate of the fuel gas is controlled so that the filling rate of the first tank calculated based on one gas pressure does not exceed a specified filling rate, and the plurality of tank mounting devices A gas filling device that performs filling of fuel gas into a tank. The gas filling device according to claim 3,
In addition to the temperature information of the first tank, among the plurality of tanks, the temperature information of the second tank having the lowest heat dissipation is also transmitted as tank information from the tank mounting device to the gas filling device side communication device. Sent
The controller is
Based on the temperature information of the second tank, so that the temperature of the second tank does not exceed the prescribed temperature value, and the filling rate of the first tank does not exceed the prescribed filling rate value, A gas filling apparatus, wherein the fuel gas supply condition is controlled to fill the plurality of tanks of the tank mounting apparatus with fuel gas. A tank mounting device having a plurality of tanks and capable of supplying fuel gas to the plurality of tanks by a gas filling device,
The plurality of tanks for storing fuel gas;
A gas filling passage for supplying fuel gas of equal pressure to each of the plurality of tanks;
A tank mounting device side communication device for communicating with the gas filling device;
With
The plurality of tanks include a tank provided with a temperature sensor for detecting the temperature of the tank, and a tank not provided with a temperature sensor,
A first temperature sensor for detecting the temperature of the first tank is provided in the first tank having the best heat dissipation among the plurality of tanks,
The temperature information of the first tank detected by the first temperature sensor is transmitted as tank information to the gas filling device via the tank mounting device side communication device,
In the gas filling device, the temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas filling device, and the gas filling path are provided. The tank device side gas pressure detected by the pressure sensor, the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, and the known gas pressure sent by the gas filling device Fuel gas is supplied from the gas filling device so that the filling rate of the first tank calculated based on one of the gas pressures does not exceed a specified filling rate. A tank mounting device characterized by that. The tank mounting device according to claim 5,
Of the plurality of tanks, a second temperature sensor that detects the temperature of the second tank is also provided in the second tank having the lowest heat dissipation.
In addition to the first temperature information, the temperature information of the second tank detected by the second temperature sensor is also transmitted as the tank information to the gas filling device via the tank mounting device side communication device,
Among the tank information transmitted, based on the temperature information of the second tank, fuel gas is supplied from the gas filling device so that the temperature of the second tank does not exceed the temperature regulation value, Based on temperature information of the first tank, a fuel gas is supplied from the gas filling device so that the filling rate of the first tank does not exceed a specified filling rate. . A gas filling method for supplying fuel gas from a gas filling device to a tank mounting device having a plurality of tanks for storing fuel gas,
In the tank mounting device, the plurality of tanks include a tank provided with a temperature sensor that detects a temperature of the tank and a tank not provided with a temperature sensor, and among the plurality of tanks, heat is most dissipated. The temperature of the first tank with good characteristics is detected, and the detected temperature information of the first tank is transmitted to the gas filling device as tank information,
In the gas filling device, the temperature information of the first tank transmitted as the tank information, the gas pressure on the gas filling device side detected by the pressure sensor provided in the gas filling device, and the gas tank device A tank device side gas pressure detected by a pressure sensor, the tank device side gas pressure transmitted together with the temperature information of the first tank as the tank information, a known gas pressure sent by the gas filling device, The filling rate of the first tank is calculated based on any one of the gas pressures, and from the gas filling device to the tank mounting device so that the calculated filling rate does not exceed the specified filling rate. A gas filling method characterized by controlling supply conditions of fuel gas supplied to the plurality of tanks and filling the plurality of tanks with gas. The gas filling method according to claim 7,
In the tank mounting device, the temperature of the second tank having the lowest heat dissipation among the plurality of tanks is detected, and the detected temperature information of the second tank is also transmitted to the gas filling device,
In the gas filling device, based on the temperature information of the second tank, the temperature of the second tank does not exceed a specified temperature value, and the calculated filling rate does not exceed a specified filling rate value. As described above, the gas filling method is characterized by controlling the supply conditions of the fuel gas supplied from the gas filling device to the tank mounting device and filling the plurality of tanks with gas.

Images