Automobile double-battery isolator

Abstract

The utility model relates to the technical field of automobile battery application, and discloses an automobile double-battery isolator which comprises an input end and two output ends, the input end is connected to the two output ends through two forward diodes respectively, the input end is used for being connected with an automobile generator, and the output end is used for being connected with the two forward diodes. The two output ends are connected to an original vehicle battery and an auxiliary battery respectively and used for charging the original vehicle battery and the auxiliary battery, a light-emitting tube is connected to each diode in parallel, and the electrode direction of the light-emitting tubes is the same as that of the diodes. According to the utility model, the light-emitting tube has different voltage division values for a normal diode and a damaged diode, so that whether the diode is lighted or not is realized, and the state of the diode is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile battery application, in particular to an automobile dual-battery isolator. Background Art

[0002] With the development of battery technology, the application of equipping cars with auxiliary batteries to ensure the safety and life of car batteries has become quite widespread.

[0003] See attached Figure 3 ,The existing car battery isolator connects a diode between the two batteries of the original car battery and the ,auxiliary battery and the car generator respectively, and it is turned on when the car generator charges the ,battery, and no internal current is generated between the two batteries due to the ,difference in internal resistance and potential.

[0004] However, when the diode is damaged, the car generator cannot charge the battery, and this situation is usually not discovered in the first time, and can only be discovered after the battery power failure, resulting in adverse consequences such as the car cannot work normally, the battery is damaged due to power loss, etc. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a dual-battery isolator for automobiles. The light-emitting tube has different voltage division values ​​for normal diodes and damaged diodes, thereby realizing whether the diodes are lit or not and judging the state of the diodes.

[0006] Experiments have shown that when the diode is working normally, the voltage drop across its two ends is less than 1V, and when the diode is damaged, the voltage across its two ends is greater than 2V. The light-emitting tube is extinguished when it is less than 1V and lights up when it is greater than 2V, thereby indicating the state of the diode.

[0007] The technical solution adopted by the utility model is:

[0008] A dual-battery isolator for automobiles, characterized in that it comprises an input end and two output ends, wherein the input end is connected to the two output ends through two forward diodes respectively, the input end is used to connect to the automobile generator, the two output ends are respectively connected to the original vehicle battery and the auxiliary battery, and are used to charge the original vehicle battery and the auxiliary battery, and a light-emitting tube is connected in parallel to each diode, and the electrode direction of the light-emitting tube is the same as that of the diode.

[0009] Furthermore, each light-emitting tube is connected in series with a voltage-dividing resistor and then connected to two ends of the diode.

[0010] Furthermore, the light-emitting tube is not conducting when the voltage across both ends is less than 1V, and is conducting and emitting light when the voltage across both ends is greater than 2V.

[0011] Furthermore, the original vehicle battery and the auxiliary battery are both 12V batteries.

[0012] The beneficial effects of the utility model are:

[0013] (1) By simply installing the light-emitting tube, the diode can be judged;

[0014] (2) Simple circuit and low cost;

[0015] (3) The voltage across the diode can be determined more accurately by using a voltage divider resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the internal planar structure of the isolator of the utility model;

[0017] Attached Figure 2 This is a schematic diagram of the battery charging circuit after installation through the isolator;

[0018] Attached Figure 3 It is a schematic diagram of a battery charging circuit in the prior art. DETAILED DESCRIPTION

[0019] The specific implementation of the automotive dual battery isolator of the utility model is described in detail below with reference to the accompanying drawings.

[0020] See attached Figure 1 The automotive dual battery isolator includes an input terminal 1 and two output terminals 2. The input terminal 1 is connected to the two output terminals 2 through two forward diodes 3, and a light-emitting tube 4 is connected in parallel to each diode 3. The electrode direction of the light-emitting tube 4 is the same as that of the diode 3. A voltage-dividing resistor 5 is connected in series to the light-emitting tube 4.

[0021] The input terminal 1 is used to connect to the car generator, and the two output terminals 2 are respectively connected to the original car battery and the auxiliary battery for charging the original car battery and the auxiliary battery.

[0022] See attached Figure 2 The isolator is installed between the car generator and the battery. When the car generator charges the battery, the two diodes are turned on, and the original car battery and the auxiliary battery are disconnected, and the two batteries do not affect each other.

[0023] The voltage of common car batteries is 12V, and the battery performance is related to the battery quality, usage time, etc., which will affect the battery output voltage, internal resistance, etc. Therefore, due to the difference in parameters of different batteries and diodes, the voltage at both ends of the diode when it is working normally or damaged will deviate from the experiment. Therefore, different voltage divider resistors are selected to make the light-emitting tube extinguish when the diode is working normally and light up when the diode is damaged.

[0024] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An automotive dual battery isolator, characterized in that: It includes an input end and two output ends. The input end is connected to the two output ends through two forward diodes respectively. The input end is used to connect to the car generator. The two output ends are respectively connected to the original car battery and the auxiliary battery to charge the original car battery and the auxiliary battery. A light-emitting tube is connected in parallel to each diode, and the electrode direction of the light-emitting tube is the same as that of the diode.

2. The automotive dual battery isolator according to claim 1, characterized in that: Each light-emitting tube is connected in series with a voltage-dividing resistor and then connected to two ends of the diode.

3. The automotive dual battery isolator according to claim 1, characterized in that: The light-emitting tube does not conduct when the voltage across the two ends is less than 1V, and conducts and emits light when the voltage across the two ends is greater than 2V.

4. The automotive dual battery isolator according to claim 2, characterized in that: The original vehicle battery and the auxiliary battery are both 12V batteries.

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