JP3168704B2 - Electric car - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vehicle equipped with a battery.

[0002]

2. Description of the Related Art As is well known, an electric vehicle is mounted with a secondary battery such as a lead battery or a nickel cadmium battery and travels using the battery as a drive source. Need to be replenished. Conventionally, there is a method of replenishing the battery with the battery mounted on a vehicle.

[0003]

However, charging takes as long as about 6 hours. Therefore, a method that can be charged in about 30 minutes using a large current has been developed.However, in this method, the charging efficiency decreases due to an increase in the battery temperature during charging, the battery deteriorates due to damage to the battery electrodes, and the battery deteriorates. There are problems such as shortening of service life. Further, since the one-charge traveling distance of the battery by the secondary battery is short, it is necessary to frequently charge the battery, and the operation loss of the vehicle is large.

[0004] It is an object of the present invention to provide an electric vehicle which solves the above-mentioned disadvantages of the prior art, can easily replace the battery, can reduce the operation loss of the vehicle, and can easily confirm the capacity of the battery. is there.

[0005]

According to the present invention, there is provided an electric vehicle equipped with a battery.
A large number of batteries are grouped together to form a unit, each unit is connected so that it can be replaced in units, and a battery sensor is connected to each unit, and the results of capacity detection by the battery sensor are displayed. Display unit, the display unit includes an overall display for indicating whether or not the capacity of all of the plurality of units is available, and an individual display for indicating whether or not the capacity of each unit is available. The gist is that the display is performed at the time of start and stop, and the entire display is performed during traveling.

[0006]

According to the present invention, the capacity is checked for each of a plurality of battery units at the time of start and stop of the vehicle, and if the capacity is insufficient, the batteries are replaced in unit units. This allows easy replacement in a short time. In addition, since replacement is performed in units and not all replacements, it is not necessary to handle heavy ones, and replacement can be easily performed. Then, the entire capacity is checked and displayed even while the vehicle is traveling, so that it is possible to always and easily know whether or not the capacity is available.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a connection circuit diagram of a battery used in the electric vehicle of the present invention, and FIG. 2 is a perspective view of a part of the battery, which will be described from the overall configuration of the electric vehicle of the present invention.

As shown in the explanatory view of FIG. 5, the electric vehicle of the present invention has a large number (16 in the illustrated example) of batteries 1.
a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3
a, 3b, 3c, 3d, 4a, 4b, 4c, 4d, and an ignition switch 8 and a display 9, which will be described later, are provided in front of the driver's seat. Motors 6a, 6b
(6b is not shown in FIG. 5), and a control device 14 for controlling the check mechanism is connected to the display 9. 7 in the figure
Indicates the accelerator.

The batteries 1a to 1d, 2a to 2d,
As shown in FIGS. 1 and 2, four units 3a to 3d and four units 4a to 4d are connected in series to form one battery unit 1, 2, 3, and 4, respectively. In this case, the capacity of one battery was set to, for example, 24 V, and one battery unit was formed to 96 V, that is, a voltage unit of a motor of an automobile.

Each of the battery units 1, 2, 3, 4 is removably housed in a housing recess 12, and connection terminals 11, 11 are provided above the left and right opposing portions.
A contact 13 to which is connected is provided. In this case, connection terminal 11
Connection terminal 11 so that
The contact 13 and the battery unit 1, 2, 3, 4, and the storage recess 12 are mounted at positions deviated from the centers of the left and right opposing portions. In the drawing, reference numeral 10 denotes a handle, and reference numeral 13a denotes a lead wire connected to the contact 13.

As described above, as shown in FIG. 1, the contacts R ₁ , R ₂ , R ₃ and R ₄ are connected in series to the battery units 1, ₂ , ₃ and 4, respectively. , 2, 3, and 4 and the battery sensor 5 are connected in series. Further, the motor 6a is connected in parallel built into the front wheel, 6b contacts R _M of the accelerator 7 and ignition switch 8 is connected in series with, the series connection circuit in series with the circuit of the battery unit 1, 2, 3, 4 Connected.

FIG. 3 is a front view of a display 9 as a means for displaying the result of capacity detection by the battery sensor 5 and an ignition switch 8 as an operation section for detecting capacity. The display 9 is a screen display such as a liquid crystal display. The whole display 15 for indicating whether or not the capacity of all four battery units 1, 2, 3, and 4 is provided above the indicator 9.
The display 15a when the detection result is acceptable and the display 15b when the detection result is invalid are provided side by side.

An individual display 16 for indicating whether or not the capacity of each of the battery units 1, 2, 3, and 4 is provided below the overall display 15 is the same as the overall display 15 for each of the battery units 1, 2, 3, and 4. The display 16a when the detection result is acceptable and the display 16b when the detection result is invalid are juxtaposed. The individual display 16 is configured to switch to a display of the traveling speed (km / h) during traveling.

The ignition switch 8 has a slot 8a for an ignition key, and the contact _RM is turned on by turning the ignition key inserted into the slot 8a from the OFF position to the ON position. ing. A check switch C for operating the capacity check mechanism of the batteries 1a to 1d, 2a to 2d, 3a to 3d, and 4a to 4d is located at an intermediate position between the OFF and ON positions.
H is interposed.

Next, the operation will be described with reference to the flowchart of FIG. To start the car, insert the ignition key into the slot 8a of the ignition switch 8 and turn it from the OFF position to the ON position.
During this time, the check switch CH is turned on (step a). When the check switch CH is turned on, the control device 14
Starts the operation of the battery check mechanism, and the display 9 displays the battery check as shown in FIG. 3 (step B).

[0016] Then, the contact R ₁ is turned on to detect the capacity of the battery unit 1 in the battery sensor 5, if the normal as compared to the reference value the detected value has been stored in the control unit 14 (step c, (D) and (e), the indication 16a corresponding to the battery unit 1 is displayed (step f), and if it is abnormal, the indication 16b is displayed (step) and the contact R
₁ turns off.

Similarly, the battery unit 2 is checked (steps H to H), and when the capacity check of all the battery units 1, 2, 3, and 4 is completed (steps H and H), the contact points R _M , R _{1 to} R ₄ turn on and display individually
16 is switched to the display of the traveling speed (km / h) (steply).

Therefore, if the accelerator 7 is depressed, the motor 6a,
6b, the car is powered by batteries 1a-1d, 2a
2d, 3a to 3d, and 4a to 4d, the front wheels in which the motors 6a and 6b are built are driven by using the power as a power source to travel. During such traveling, all the contacts R _{1 to} R ₄ are simultaneously turned on, so that all the battery units 1, 2, 2,
Checks of the total capacities of 3 and 4 are performed, and the check results are always displayed by displaying either the OK display 15a or the OFF display 16b.

[0019] Then, to stop the run, if return the ignition key from the position of the ON to OFF (Suteppunu), contact R _M of the ignition switch 8 is turned off, contact R ₁
~R ₄ is turned off, running speed (km / h) of the display unit 9 display is switched again to the battery check display (staple). Since the ignition switch 8 as a check switch is turned on while the ignition key is being turned from ON to OFF, the capacities of all the battery units 1, 2, 3, and 4 are individually checked in the same manner as at the start of display. The result is displayed (step h).

When all the battery units 1 to 4 have been checked, the ignition switch 8
Is turned off (step ヲ), and all the operations are terminated. Then, the battery unit having insufficient capacity is exchanged for another unit which is pulled up from the storage recess 12 with the handle 10 in units of the unit. In this case, unit 1
Since the weight of each piece is about 50kg, it can be replaced easily compared to the case where the whole battery is replaced.

[0021]

As described above, in the electric vehicle according to the present invention, the battery serving as a power source is configured in a unit that can be replaced independently. Therefore, when the capacity is insufficient, only the unit having the insufficient capacity can be replaced. Since it is sufficient, the capacity can be supplemented in a short time as compared with the method of charging with the battery mounted, and the replacement operation can be easily performed because the battery is replaced in units. Furthermore, the battery unit to be prepared for replacement is inexpensive in terms of cost because it can use midnight power or use solar power.

Furthermore, when the vehicle starts and stops, the capacities of a plurality of battery units are individually checked and displayed on an individual display, and while the vehicle is running, the entire capacity is checked and displayed on the entire display. , Which can be checked at all times to prevent capacity shortage.

[Brief description of the drawings]

FIG. 1 is a connection circuit diagram of a battery used in an electric vehicle according to the present invention.

FIG. 2 is a perspective view of a part of a battery.

FIG. 3 is a front view of a check operation unit and a check result display of a battery used in the electric vehicle according to the present invention.

FIG. 4 is a flowchart showing an operation of a battery check of the electric vehicle according to the present invention.

FIG. 5 is an explanatory diagram of an electric vehicle according to the present invention.

[Explanation of symbols]

1, 2, 3, 4,... Battery units 1a, 1b, 1c, 1d, 2a, 2b, 2c, 2d, 3
a, 3b, 3c, 3d, 4a, 4b, 4c, 4d ... battery 5 ... battery sensor 6a, 6b ... motor 7 ... accelerator 8 ... ignition switch 8a ... insertion slot 9 ... indicator 10 ... handle 11 ... connection terminal 12 ... Storage recess 13 Contact 13a Lead wire 14 Control device 15 Overall display 15a, 15b Display 16 Individual display 16a, 16b Display

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60K 1/04 B60L 11/18 H01M 2/10

Claims (1)

(57) [Claims] In an electric vehicle equipped with a battery, a large number of batteries are collectively constructed as a unit, and each unit is connected so as to be replaceable in units, and a battery sensor is connected to each unit. And a display for displaying a result of the capacity detection by the battery sensor. The display includes an overall display for displaying the availability of the capacity of all the plurality of units, and an individual display for displaying the availability of the capacity of each unit. An electric vehicle, wherein the individual display is performed when the vehicle starts and stops, and the entire display is performed while the vehicle is running.