CN103023114A - Integrated rechargeable battery device - Google Patents

Abstract

An integrated rechargeable battery device is used for a monitoring and early warning system. A battery can simultaneously collect radio frequency energy and heat, radio frequency signal collection can include selection of various frequencies, a radio frequency power detecting circuit is used for selecting matched signals to collect energy, and a radio frequency signal collection module comprises a radio frequency power detection circuit, a matched circuit and a three-level booster circuit. According to the integrated rechargeable battery device, an improved CMOS (complementary metal oxide semiconductor) cross coupling full wave rectifier circuit replaces a traditional Schottky diode rectifier circuit, so that output direct current loss after rectification of a small signal is reduced. The booster circuit is controlled by an improved booster pump circuit by the aid of five-level CP (computer program) pulse, so that the shortcoming that a traditional booster circuit needs to be powered by an external power supply, is high in power consumption and the like is overcome, and the output efficiency of the whole circuit is improved. The requirement on low current consumption is met by the aid of a switch control circuit comprising a voltage detector and a switch transistor. Compared with a traditional charging device, the integrated rechargeable battery device is more easily integrated by the aid of a passive and active mixed electric energy storage and management module.

Description

An integrated rechargeable battery device

technical field

The invention relates to an integrated rechargeable battery device used in a monitoring and early warning system. In particular, it provides a method for simultaneously collecting radio frequency signals of more than two frequencies and thermal energy signals, and the collected energy can be stored and used as a power supply.

Background technique

In the safety monitoring and early warning system, the energy transmission distance of electronic equipment such as micro-robots, radio frequency identification, wireless sensors and transponders, and remote sensing detection is generally within a few meters and a few centimeters. Long standby time, using microwave energy transmission technology can meet these requirements.

The aforementioned sensor network systems require small and simple micro sensor nodes where power supply becomes an important and critical issue due to the small size, weight, and regular maintenance of the sensors. Some solutions, such as solar cells, are difficult to integrate with sensor systems; there are also methods that use mechanical vibration to provide energy, but the sensor must be on a moving object, which cannot be realized for a stationary object. The integrated rechargeable battery device designed by the present invention can simultaneously collect the energy of radio frequency signals and heat signals, and can be used as a power source to solve the above problems well, and is easy to integrate.

Contents of the invention

The purpose of the present invention is to solve the inconvenience caused by maintaining batteries in high-risk or remote areas as described in the background art, and to provide a new energy collection method.

The invention adopts the method of collecting multiple radio frequency signals and thermal energy signals simultaneously, realizes the collection of multiple energies, and improves the efficiency of energy collection.

The radio frequency signal collection can include multiple frequency selections, and the matching signal is selected through the radio frequency power detection circuit to realize energy harvesting. The module contains RF power detection circuit, matching circuit and three-stage boost circuit.

The integrated rechargeable battery device mainly includes an improved full-wave rectification circuit, an improved boost pump circuit, a switch control circuit with MOS negative feedback and a power storage/management module.

(1) An improved CMOS cross-coupled full-wave rectifier circuit is used to replace the traditional Schottky diode rectifier circuit, which reduces the output DC loss after small-signal rectification.

(2) The improved boost pump circuit utilizes the method of controlling the boost circuit by the fifth-order CP pulse, which overcomes the defects of the traditional boost circuit that requires external power supply and large power consumption, and improves the output efficiency of the overall circuit.

(3) The switch control circuit is composed of a voltage detector and a switching transistor to meet the requirements of low current consumption. The switch control circuit consists of a voltage detector and a switching transistor to meet the low current consumption requirement.

Compared with the traditional charging device, the key module of the integrated rechargeable battery device adopts integrated circuit technology devices, and uses passive and active hybrid electric energy storage and management modules, so as to achieve high integration, and the design of low power consumption improves the charging efficiency.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural schematic diagram of an integrated rechargeable battery device;

Fig. 2 is a schematic diagram of a boost pump circuit of an integrated rechargeable battery device.

Detailed ways

The integrated rechargeable battery can also be used in many fields such as nuclear leakage early warning and monitoring, oil and gas pipeline optical fiber monitoring and early warning, water quality biological early warning, food safety monitoring and early warning, and mountain torrent disaster monitoring and early warning systems. The specific implementation will be described below with the application in the nuclear leakage early warning and monitoring system. When in use, you only need to connect the output terminal of the integrated rechargeable battery to the peripheral circuit of the sensor node, and then you can collect radio frequency energy and heat energy by yourself. The specific principle is shown in Figure 1.

For external radio frequency signals of different frequencies, the matching signal is selected through the radio frequency power detection circuit to realize energy harvesting, and the voltage is increased through the third-stage boost circuit, and then transmitted to the power storage and management module: the external thermal energy signal is converted to low frequency by the pyroelectric module The electrical signal is converted into a DC signal by a cross-coupled full-wave rectifier circuit, and then raised to a set output voltage by a CP booster pump circuit, as shown in Figure 2. It is transmitted to the electric energy storage and management module through the switch control circuit, and this module can not only control the charging of the micro-battery, but also control the power supply of the micro-battery to the energy harvesting system.

Claims (7)

1. An integrated rechargeable battery device for monitoring and early warning systems, comprising: (1) It can collect radio frequency signals and thermal signals at the same time; (2) The radio frequency/thermal signal collection circuit includes an improved full-wave rectification circuit, an improved boost pump circuit, a switch control circuit with MOS negative feedback, and an electric energy storage and management module; (3) The radio frequency signal collection can include multiple frequency selections, and the matching signal is selected through the radio frequency power detection circuit to realize energy collection. It is characterized in that it can collect space electromagnetic waves and electromagnetic waves of various frequency bands emitted by base stations to achieve energy collection, and can also use composite pyroelectric materials to achieve energy collection, and can store the collected energy; low power consumption and high efficiency ; Small size, light weight, high integration. 2. The integrated rechargeable battery device according to claim 1, characterized in that: radio frequency signals and thermal signals are collected at the same time to realize the collection of multiple energies, and the thermal energy signals are received and converted through the composite pyroelectric material. 3. The integrated rechargeable battery device according to claim 1, characterized in that: it includes a variety of frequency band selections, includes a radio frequency power detection circuit, and realizes multi-energy fusion in radio frequency signal energy collection. 4. The integrated rechargeable battery device according to claim 1, characterized in that: an improved CMOS cross-coupled full-wave rectifier circuit is used to reduce the output DC loss after small signal rectification. 5. According to the described integrated rechargeable battery device of claim 1, it is characterized in that: the improved booster pump circuit utilizes the method of controlling the booster circuit with a fifth-order CP pulse, reduces power consumption, does not require external power supply, and can improve the overall output efficiency of the circuit. 6. The integrated rechargeable battery device according to claim 1, characterized in that: the switch control circuit is composed of a voltage detector and a switch transistor to meet the requirement of low current consumption. 7. The integrated rechargeable battery device according to claim 1, characterized in that it utilizes a passive electric energy storage and management module and realizes integration.

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