JP2007263817A - Battery state detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery state detection device capable of measuring accurately the state quantity of a battery without being influenced by a peripheral environment. <P>SOLUTION: This battery state detection device 10 has a characteristic wherein both a sensor part 11 and a data processing part 12 are mounted inside a terminal cover 25. Namely, the sensor part 11 is mounted on the inner surface of an upper lid part 25b inside the terminal cover 25, and the data processing part 12 is included inside the upper lid part 25b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a battery state detection device that detects a state amount of a vehicle battery.

The battery mounted on the vehicle is indispensable for starting the engine, and is a particularly important device for running the vehicle. For this reason, a battery state detection device is installed so that problems such as discharge and deterioration of the battery can be found early. The battery state detection device includes a sensor for measuring the temperature, voltage, and the like of the battery, and a data processing unit that processes data measured by the sensor.
The battery sensor needs to be installed around the battery where the state quantity of the battery can be measured. As a conventional technique related to the battery sensor installation method, for example, there is one described in Patent Document 1.

Patent Document 1 discloses a technique related to a fixing device in which a plurality of sensors are combined into one integrated configuration unit. The fixing device can be fixed to one terminal of the battery.
Special table 2003-517613

  However, the conventional vehicle power supply system has the following problems. Usually, a vehicle battery is often installed in a severe environment such as an engine room. Therefore, the environment is unfavorable for temperature measurement under the influence of heat dissipation from the engine and hot air from the radiator fan.

  Moreover, the sensor for measuring the battery temperature is currently mounted on a substrate in the battery case or the battery unit. Thus, since the temperature sensor is not attached so as to be in direct contact with the battery, there is a problem that it is difficult to accurately measure the battery temperature.

  In the battery sensor mounting method described in Patent Document 1, the sensor is directly mounted on the battery terminal. However, the sensor is mounted in a state where it is directly affected by heat dissipation from the engine or hot air from the radiator fan. Therefore, it is extremely difficult to accurately measure the temperature of the battery even by the sensor mounting method described in Patent Document 1.

  On the other hand, the data processing unit is usually installed at a location away from the battery sensor, and the data processing unit and the sensor are connected by a cable. However, the cable is susceptible to noise from the periphery, and there is a problem that the battery state quantity cannot be measured accurately due to the influence.

  Accordingly, the present invention has been made to solve these problems, and an object of the present invention is to provide a battery state detection device that can accurately measure the state amount of a battery without being affected by the surrounding environment. .

  A first aspect of the battery state detection device of the present invention is a battery state detection device that includes a sensor unit and a data processing unit and detects a state amount of a vehicle battery, and the data processing unit is connected to a terminal of the battery. It is a battery state detection device characterized in that it is fixed in proximity and the sensor part is attached to the inside of a terminal cover of the battery.

  According to a second aspect, the terminal cover includes a side tube portion that surrounds the entire circumference or a part of the terminal in the circumferential direction, and an upper lid portion provided at an upper end portion of the side tube portion. The battery state detection device is characterized in that the data processing unit is included in the upper lid.

  According to a third aspect, when the sensor unit is installed on the inner surface of the upper lid part and the terminal cover is installed on the battery terminal, the sensor unit is installed at the upper end of the battery terminal or the battery post of the battery. It is a battery state detection apparatus characterized by contacting the upper end of.

  In the fourth aspect, the sensor unit is installed on the inner surface of the side tube unit, and when the terminal cover is installed on the battery terminal, the sensor unit comes into contact with the outer peripheral part of the battery terminal. It is a battery state detection apparatus characterized by these.

  In a fifth aspect, the sensor unit has two sensors for measuring two types of state quantities of the battery, one of the sensors is installed on the inner surface of the upper lid, and the other of the sensors When the sensor is installed on the inner surface of the side tube portion and the terminal cover is installed on the battery terminal, the one sensor contacts the upper end of the battery terminal or the upper end of the battery post, and The other sensor is in contact with the upper and outer periphery of the battery terminal.

  As described above, according to the present invention, it is possible to provide a battery state detection device capable of accurately measuring a state amount of a battery without being affected by the surrounding environment by installing the sensor in the terminal cover. it can.

  A configuration of a battery state detection device in a preferred embodiment of the present invention will be described in detail with reference to the drawings. In addition, about each structural part which has the same function, the same code | symbol is attached | subjected and shown for simplification of illustration and description.

  FIG. 1 is a schematic diagram showing a state in which a battery state detection device according to an embodiment of the present invention is installed in a battery. The battery state detection device 10 according to the present embodiment includes a sensor unit 11 and a data processing unit 12.

  The battery 21 has a terminal 23 fixed to the battery post 22 and supplies power through a cable 24 connected to the terminal 23. The terminal 23 is covered with a terminal cover 25, and the terminal cover 25 according to the present embodiment has a structure that can be opened and closed with a fixed point 26 as a fulcrum.

  The terminal cover 25 is further formed of a side tube portion 25a that surrounds the entire circumference or part of the terminal 23 in the circumferential direction, and an upper lid portion 25b provided at the upper end portion of the side tube portion 25a. The terminal cover 25 has a structure in which the terminal 23 is covered with the side tube portion 25a and the upper lid portion 25b, and prevents a conductor such as a metal from coming into contact with the terminal 23 or being contaminated with dust.

  The battery state detection device 10 of the present embodiment is characterized in that both the sensor unit 11 and the data processing unit 12 are attached to the inside of the terminal cover 25. That is, the sensor unit 11 is attached to the inner surface of the upper lid portion 25b inside the terminal cover 25, and the data processing unit 12 is included in the upper lid portion 25b.

  By attaching the sensor part 11 to the inner surface of the upper lid part 25b, the sensor part 11 is attached to the end of the battery post 22 or the terminal 23 when the terminal cover 25 is covered with the terminal 23 as shown in FIG. Can be contacted. Thereby, the sensor unit 11 can measure a predetermined battery state quantity via the battery post 22 or the terminal 23. The battery state quantity may be a battery voltage or a battery temperature.

  Further, by allowing the data processing unit 12 to be included in the upper lid portion 25b, the distance from the sensor unit 11 attached to the inner surface of the upper lid portion 25b can be extremely shortened. As a result, the length of a wiring body (not shown) that connects the sensor unit 11 and the data processing unit 12 can be extremely shortened, and noise can be avoided from being added to the wiring body.

  The terminal cover 25 to which the battery state detection device 10 of the present embodiment is attached is fixed to a battery housing or the like at a fixing point 26. When the sensor unit 11 or the data processing unit 12 is to be maintained, the fixing unit 26 is provided. The terminal cover 25 is lifted upward as a fulcrum so that the sensor unit 11 and the data processing unit 12 can be handled.

  FIG. 2 shows a state where a battery state detection device according to another embodiment of the present invention is installed in a battery. In the battery state detection device 30 of this embodiment, the sensor unit 11 includes two sensors 31 and 32.

  In the present embodiment, one sensor 31 is attached to the inner surface of the upper lid portion 25b, and the other sensor 32 is attached to the side tube portion 25a, as in the embodiment shown in FIG. The sensor 32 attached to the side tube portion 25 a is formed so as to contact the side surface of the terminal 23 when the terminal cover 25 is covered with the terminal 23. As the sensors 31 and 32, for example, the sensor 31 can be a voltage measurement sensor and the sensor 32 can be a temperature measurement sensor.

  Like the above-described sensors 31 and 32, two or more sensors are attached to the upper cover portion 25b and the side tube portion 25a of the terminal cover 25 so that a plurality of sensors are installed in a narrow space inside the terminal cover 25. A sensor can be attached. In addition, even if the number of sensors attached to the inside of the terminal cover 25 is one, the one sensor may be attached to the side tube portion 25a.

  The battery state detection device 10 or 30 of the above embodiment is attached to the terminal cover 25 having a structure that can be opened and closed with the fixing point 26 as a fulcrum. The terminal cover to which the battery state detection device 10 or 30 can be attached is not limited to the terminal cover 25 shown in FIGS. 1 and 2, and can be attached to the terminal cover 41 as shown in FIG. 3, for example. .

The terminal cover 41 shown in FIG. 3 has a structure that completely covers the battery post 22. Similar to the terminal cover 25, the terminal cover 41 also includes a side tube portion 41a and an upper lid portion 41b. In the same manner as the battery state detection device 10 shown in FIG. 1, the sensor unit 11 is attached to the inner surface of the upper lid part 41b, and the data processing unit 12 is included in the upper lid part 41b.
Since the terminal cover 41 is attached so as to completely cover the battery post 22, the influence from the surrounding environment can be further reduced, and the sensor unit 11 can be protected from heat radiation from the engine and dust. The material used for the terminal cover 25 or 41 may be plastic or rubber-based resin.

  As described above, the battery state detection device of the present invention has the sensor unit and the data processing unit attached to the inside of the terminal cover, so that the battery temperature is not affected by the heat dissipation of the engine or the hot air from the radiator fan. Can be measured accurately.

  In addition, the length of the wiring body connecting the sensor unit and the data processing unit can be shortened, and the possibility that noise is added to the wiring body can be greatly reduced. Furthermore, since the battery state detection device of the present invention is integrally attached to and detached from the terminal cover, an effect that the workability of sensor maintenance and the like is greatly improved can be obtained.

  In addition, the description in this Embodiment shows an example of the battery state detection apparatus which concerns on this invention, and is not limited to this. The detailed configuration and detailed operation of the battery state detection device in the present embodiment can be changed as appropriate without departing from the spirit of the present invention.

FIG. 1 is a schematic diagram showing a state in which a battery state detection device according to an embodiment of the present invention is installed in a battery. FIG. 2 is a schematic diagram showing a state in which a battery state detection device according to another embodiment of the present invention is installed in a battery. FIG. 3 is a schematic diagram showing the battery state detection device of the present invention attached to a terminal cover having a structure that completely covers the battery post.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 30 ... Battery state detection apparatus 11 ... Sensor part 12 ... Data processing part 21 ... Battery 22 ... Battery post 23 ... Terminal 24 ... Cable 25, 41 ... Terminal cover 26 ... fixed points 31, 32 ... sensor

Claims (5)

A battery state detection device that includes a sensor unit and a data processing unit and detects a state amount of a vehicle battery,
The data processing unit is fixed in proximity to a terminal of the battery;
The battery state detection device, wherein the sensor unit is attached to the inside of a terminal cover of the battery. The terminal cover is composed of a side cylinder portion that surrounds the entire circumference or part of the terminal in the circumferential direction, and an upper lid portion provided at an upper end portion of the side cylinder portion,
The battery state detection device according to claim 1, wherein the data processing unit is included in the upper lid part. The sensor part is installed on the inner surface of the upper lid part;
3. The battery state according to claim 1, wherein when the terminal cover is installed on the battery terminal, the sensor unit contacts an upper end of the battery terminal or an upper end of a battery post of the battery. Detection device. The sensor part is installed on the inner surface of the side tube part,
3. The battery state detection device according to claim 1, wherein when the terminal cover is installed on the battery terminal, the sensor unit comes into contact with an outer periphery of the battery terminal. The sensor unit has two sensors for measuring two types of state quantities of the battery,
One of the sensors is installed on the inner surface of the upper lid,
The other sensor is installed on the inner surface of the side tube portion,
When the terminal cover is installed on the battery terminal, the one sensor is in contact with the upper end of the battery terminal or the upper end of the battery post, and the other sensor is in contact with the upper and outer peripheral portion of the battery terminal. The battery state detection device according to claim 1 or 2, characterized by the above-mentioned.

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