JPH04129470U - Storage battery temperature measurement sensor unit - Google Patents

Abstract

(57) [Summary] [Objective] To provide a storage battery temperature measurement sensor unit that can obtain measurement results equivalent to direct measurement without directly measuring the liquid temperature of a lead storage battery. [Structure] A temperature sensor 4 is brought into contact with the outer surface of a battery case 3 of a lead-acid battery 2. The surface of this temperature sensor 4 that does not face the battery case 3 is surrounded by a cushioning heat insulating material 5. A heat shielding cover 6 is provided on the outer surface of this cushioning heat insulating material 5.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a storage battery temperature measurement sensor unit that measures the temperature of a storage battery. It is.

0002

[Conventional technology]

Charging voltage control in lead-acid battery charging control systems is performed using an IC regulator. The charging voltage changes depending on the temperature. In other words, the alternator body or the liquid temperature of a lead-acid battery is detected by a sensor, and the charging voltage at 20℃ is used as a reference. When the temperature rises above 21℃, the charging voltage decreases, and when the temperature falls below 19℃, the charging voltage increases. It has become.

0003

[Problem that the idea aims to solve]

However, conventional temperature detection sensors cannot detect the temperature of the alternator body. If the alternator is heated, the flow of hot air in the engine compartment will cause the temperature of the alternator body to Battery temperature may change. When the load of the car is applied to the alternator, the load It has the role of passing electricity through the battery, but at the same time, it also charges the lead-acid battery by passing electricity through it when it is in a discharged state. If the battery is exposed to electricity, or if it becomes hot or overcharged, do not allow electricity to flow through it. If the temperature of the lead-acid battery is low and the charging voltage is low, it will not be able to accept charging. If the lead-acid battery is in a discharged state, over-discharge is likely to occur. Conversely, the temperature of lead-acid batteries When the charging voltage is high, the charge acceptance ability is good, so the fully charged state is If so, overcharging is likely to occur. Therefore, either way, the lifespan of lead-acid batteries will be shortened. there is a possibility.

0004 On the other hand, when detecting the temperature of the electrolyte in a lead-acid battery with a sensor, the sensor and electrolyte are in contact. There is a risk that the parts that come into contact with the sensor will be corroded by the acid, and the sensor itself will become damaged after many years of use. Your body may not be able to function properly.

[0005] The purpose of this invention is to measure the liquid temperature of a lead-acid battery without directly measuring it, but with the same level of measurement as if it were directly measured. An object of the present invention is to provide a storage battery temperature measurement sensor unit that can obtain measurement results.

[0006]

[Means to solve the problem]

To explain the structure of the present invention that achieves the above purpose, the storage battery temperature according to the present invention is The measurement sensor unit includes a temperature sensor that comes into contact with the outer surface of the battery case, and a temperature sensor that contacts the outer surface of the battery case. a cushioning insulating material surrounding a surface of the battery that does not face the battery case; and a heat shielding cover provided on the outer surface of the flexible heat insulating material. shall be.

[0007]

[Effect]

With this configuration, a cushion surrounds the surface of the temperature sensor that does not face the battery case. the presence of a cushioning heat insulating material and a heat shielding cover provided on the outer surface of the cushioning heat insulating material; As a result, the temperature of the electrolyte in a lead-acid battery can be measured in the same manner as the temperature of the electrolyte without directly measuring it. It is possible to measure the temperature of etc.

[0008]

【Example】

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIG. Storage battery temperature in this example The temperature measurement sensor unit 1 is a temperature sensor that comes into contact with the outer surface of the battery case 3 of the lead-acid battery 2. Cushioning insulation that surrounds the temperature sensor 4 and the surface of the temperature sensor 4 that does not face the battery case 3 material 5 and a heat shielding cover 6 provided on the outer surface of the cushioning heat insulating material 5. has been completed.

[0009] Using the storage battery temperature measurement sensor unit 1 of the present invention, its performance can be measured. As a result, the results shown in Table 1 were obtained. In this case, the heat shield cover 6 and For example, the length is 319mm, the width is 188mm, the height is 206mm, and the thickness is 2mm. Use a cylindrical shape that is large enough to fit a 65D31 type to 95D31 type lead-acid battery as listed. The eggplant ABS resin body was fitted with a gap of 7 mm to the outer periphery of the battery case 3. . As the cushioning heat insulating material 5, for example, a sports material with a width of 15 mm, a length of 15 mm, and a thickness of 10 mm is used. A composite fiber in the shape of a rainbow was used.

0010 The test was conducted using a large dryer at an internal temperature of 80±1°C. temperature measurement The fixed points are the liquid temperature of the 1st cell on the positive side, the liquid temperature of the 3rd cell on the positive side, and the 1st cell on the positive side. The temperature of the short side of the eye was measured. Specifications are without heat shield cover 6 and with heat shield cover 6 - 6 is provided, but the gap between it and the battery case 3 is not filled with cushioning heat insulating material 5. A state in which a thermal cover 6 is provided and the gap between it and the battery case 3 is filled with a cushioning heat insulating material 5 We went with three specifications.

[0011]

[Table 1]

0012 Based on the above results, it was found that the heat shielding cover 6 was provided and the gap between the battery case 3 and the battery case 3 had a cushioning effect. When filled with heat insulating material 5, there is almost no difference in temperature between the electrolyte solution temperature and the outer wall of battery case 3. I found out.

[0013] FIG. 2 is a graph showing the results of Table 1.

[0014]

[Effect of the idea]

As explained above, the storage battery temperature measurement sensor unit according to the present invention The surface of the temperature sensor that is in contact with the outside surface and does not face the battery case is covered with cushioned insulation material. Since a heat shielding cover is provided on the outer surface of the cushioning heat insulating material, lead-acid battery Measures the same temperature as the temperature of the electrolyte without directly measuring the temperature of the electrolyte be able to. In addition, according to the present invention, corrosion of the sensor due to electrolyte can be prevented and degree measurements can be taken.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of a storage battery temperature measurement sensor unit according to the present invention.

FIG. 2 is a graph showing the results of an experiment conducted with the specifications shown in FIG. 1;

[Explanation of symbols]

1...Storage battery temperature measurement sensor unit, 2...Lead acid battery, 3
…Battery container, 4…Temperature sensor, 5…Cushion insulation material, 6
...Heat shield cover.

Claims (1)

[Scope of utility model registration request] 1. A temperature sensor that comes into contact with an outer surface of a battery case, a cushioning heat insulating material surrounding a surface of the temperature sensor that does not face the battery case, and a cushioning heat insulating material provided on the outer surface of the cushioning heat insulating material. A storage battery temperature measurement sensor unit comprising: a heat shielding cover;