CN202309157U

CN202309157U - Power supply cell with one port for both charging and discharging

Info

Publication number: CN202309157U
Application number: CN2011204383300U
Authority: CN
Inventors: 胡先文
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-08
Filing date: 2011-11-08
Publication date: 2012-07-04
Anticipated expiration: 2021-11-08

Abstract

Provided is a power supply cell with one port for both charging and discharging, comprising a cell module, a charging and discharging control module electrically connected to the cell module, a switch module, and a charging and discharging interface which is connected with the charging and discharging control module, wherein the switch module is connected between the cell module and the charging and discharging interface; and the charging and discharging control module is provided with a voltage reduction circuit. The power supply cell of the utility model utilizes the first pin of the R1224N102H chip to control the closure and opening of the chip loop, thereby achieving the charging and discharging with one port, avoiding the switching between the multiple ports and utilization switch, facilitating the usage, and improving the safety.

Description

Discharge and recharge power-supply battery with port

Technical field

The utility model provides a kind of lithium battery power supply, particularly a kind ofly discharges and recharges power-supply battery with port.

Background technology

Existing industrial equipment power-supply battery: lithium battery power supply voltage routine is 3.7V/7.4V/11.1V/ if adopt 6.5V～5.5V power supply; Then the discharge module of battery need be used reduction voltage circuit or booster circuit; Therefore, battery generally discharges and recharges port needs switch to switch, or discharges and recharges port and need separate; Or with the linked set differentiation charging terminal of multiple parallel and the terminal that discharges, this has caused the inconvenience of more use and certain safety problem.

The utility model content

The purpose of the utility model is to provide a kind of and discharges and recharges power-supply battery with port, uses a port can realize charge or discharge, the convenient use, and avoided improper use.

For realizing above-mentioned purpose; The utility model provides a kind of power-supply battery that discharges and recharges with port; It comprises: a battery module, be electrically connected at that one of this battery module discharges and recharges control module, a switch module and is connected in this interface that discharges and recharges that discharges and recharges control module; This switch module is connected in battery module and discharges and recharges between the interface, discharges and recharges control module and is provided with reduction voltage circuit.

Also comprise a battery protection module, this battery protection module is electrically connected at this battery module.

Said battery module comprises two lithium batteries that are connected in series; Said battery protection module comprises two S-8241ACL chips and a S-8242AAX chip; Two S-8241ACL chips are electrically connected at two lithium batteries respectively, and the S-8242AAX chip is electrically connected at this battery module.

Comprise that also being located at this discharges and recharges control module and discharge and recharge the filtration module between the interface, said switch module is connected between battery module and the filtration module.

Said switch module is a diode, and this diode anode is electrically connected at this filtration module, and negative electrode is electrically connected at this battery module.

The said control module that discharges and recharges comprises: the voltage feedback circuit of R1224N102H chip, FET and R1224N102H chip; This reduction voltage circuit is the R1224N102H chip; This FET is electrically connected at the output of this R1224N102H chip, is electrically connected at this battery module simultaneously.

The voltage feedback circuit of said R1224N102H chip comprises: first resistance, second resistance, the 3rd resistance and electric capacity; Second resistance and the 3rd resistance are connected in series in and discharge and recharge interface; Parallelly connected with second resistance after electric capacity is connected with first resistance, R1224N102H chip the 3rd pin is connected between second resistance and the 3rd resistance.

Said FET is selected the integrated pipe of AO4407 for use.

The beneficial effect of the utility model: the utility model provided a kind ofly discharges and recharges power-supply battery with port; Its first pin through chip R1224N102H comes the closed of control chip loop or closes and realize the conversion that discharges and recharges with port; Avoid multiport and the switching of using switch, brought the convenience of many uses and improved safety guarantee.

In order further to understand the characteristic and the technology contents of the utility model, see also following detailed description and accompanying drawing, yet accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited about the utility model.

Description of drawings

Below in conjunction with accompanying drawing, describe in detail through embodiment the utility model, the technical scheme that makes the utility model and other beneficial effect is obvious.

In the accompanying drawing,

Fig. 1 discharges and recharges the module diagram of power-supply battery with port for the utility model;

Fig. 2 discharges and recharges the protection module circuit diagram of power-supply battery with port for the utility model;

Fig. 3 discharges and recharges the circuit diagram that control module and filtration module of power-supply battery with port for the utility model.

Embodiment

For further setting forth technological means and the effect thereof that the utility model is taked, be described in detail below in conjunction with the preferred embodiment and the accompanying drawing thereof of the utility model.

See also Fig. 1, the same port that the utility model provides discharges and recharges power-supply battery, and it comprises: a battery module 10, a battery protection module 20, discharge and recharge control module 30, a switch module 40, filtration module 50, and one discharge and recharge interface 60.

See also Fig. 2 and Fig. 3, the battery module 10 in the present embodiment is made up of two lithium batteries that are connected in series.

Said battery protection module 20 comprises two S-8241ACL chips that are connected in parallel and a S-8242AAX chip; Two S-8241ACL chips are electrically connected at two lithium batteries respectively; Respectively these two lithium batteries are protected; The S-8242AAX chip is electrically connected at this battery module 10, and the entire cell module is protected.

The said control module 30 that discharges and recharges is provided with reduction voltage circuit; It comprises: the voltage feedback circuit of R1224N102H chip, FET and R1224N102H chip; This reduction voltage circuit is the R1224N102H chip; This FET is electrically connected at the output of this R1224N102H chip, is electrically connected at this battery module 10 simultaneously, and the voltage feedback circuit of described R1224N102H chip comprises: first resistance R 2, second resistance R 3, the 3rd resistance R 4 and capacitor C 8; Second resistance R 3 and the 3rd resistance R 4 are connected in series in and discharge and recharge interface 60; Parallelly connected with second resistance R 3 after capacitor C 8 is connected with first resistance R 2, R1224N102H chip the 3rd pin is connected between second resistance R 3 and the 3rd resistance R 4, and said FET is selected the integrated pipe of QO4407 for use.

Said switch module 40 is diode D1, and this diode D1 anode is electrically connected at via this filtration module 50 and discharges and recharges interface 60, and negative electrode is electrically connected at this battery module 10.

Said filtration module 50 is located at this and is discharged and recharged control module 30 and discharge and recharge between the interface 60.

Like Fig. 2 and shown in Figure 3; Should discharge and recharge power-supply battery with port; The lithium battery group is connected the two ends of battery protection module, and chip S-8242AAX overcharges and over to whole battery group, and two S-8241ACL overcharge and over to two lithium batteries respectively.When circuit connects charger; OUT+ and OUT-two ends are in high level control down, through the feedback circuit of R1224N102H chip U1, feed back to the tripod place of R1224N102H chip U1; The duty ratio of the square wave of the 4th pin output of R1224N102H chip U1 just and then reduces; First pin of R1224N102H chip U1 is closed the output of the 4th pin, and FET Q1 is in low level control down, is in closed condition.Diode D1, the anode level is higher than the negative electrode level, and diode D1 is in conducting state, and resistance is near 0, and battery is in charged state, discharges and recharges interface OUT+ and OUT-two end interfaces just as charging inlet.When OUT+ and OUT-two ends disconnection charger or access load; OUT+ and OUT-two ends are in low level control, feed back to the tripod place of R1224N102H chip U1, and the duty ratio of the square wave of the 4th pin output of R1224N102H chip U1 just and then increases; FET Q1 is in high level control; FET Q1 is in conducting state, and this moment, diode D1 negative electrode level was higher than the anode level, and resistance is infinitely great; Be in cut-off state, discharge and recharge interface OUT+ and OUT-two end interfaces just as the discharge port.

In sum; The utility model provided a kind ofly discharges and recharges power-supply battery with port; Its first pin through chip R1224N102H comes the closed of control chip loop or closes and realize the conversion that discharges and recharges with port; Avoid the use of multiport and switch, brought the convenience of many uses and improved safety guarantee.

The above; For the person of ordinary skill of the art; Can make other various corresponding changes and distortion according to the technical scheme and the technical conceive of the utility model, and all these changes and distortion all should belong to the protection range of the utility model claim.

Claims

1. A charging and discharging power supply battery with the same port, comprising: a battery module, a charging and discharging control module electrically connected to the battery module, a switch module and a charging and discharging control module connected to the charging and discharging control module The switch module is connected between the battery module and the charging and discharging interface, and the charging and discharging control module is provided with a step-down circuit.

2. The charging and discharging power supply battery with the same port as claimed in claim 1, further comprising a battery protection module electrically connected to the battery module.

3. The charging and discharging power supply battery with the same port as claimed in claim 2, wherein the battery module includes two lithium batteries connected in series, and the battery protection module includes two S-8241ACL chips and one S-8242AAX Chip, two S-8241ACL chips are electrically connected to two lithium batteries, and the S-8242AAX chip is electrically connected to the battery module.

4. The charging and discharging power supply battery with the same port as claimed in claim 1, further comprising a filtering module arranged between the charging and discharging control module and the charging and discharging interface, and the switch module is connected to the battery module and the filtering module. between modules.

5 . The charging and discharging power supply battery with the same port as claimed in claim 4 , wherein the switch module is a diode, the anode of the diode is electrically connected to the filter module, and the cathode is electrically connected to the battery module.

6. The charging and discharging power supply battery with the same port as claimed in claim 1, wherein the charging and discharging control module comprises: R1224N102H chip, field effect transistor, and voltage feedback circuit of R1224N102H chip, and the step-down circuit is R1224N102H chip , the FET is electrically connected to the output terminal of the R1224N102H chip, and is also electrically connected to the battery module.

7. The charging and discharging power supply battery with the same port as claimed in claim 6, wherein the voltage feedback circuit of the R1224N102H chip includes: a first resistor, a second resistor, a third resistor and a capacitor, the second resistor and the third resistor The resistor is connected in series to the charging and discharging interface, the capacitor is connected in series with the first resistor and then connected in parallel with the second resistor, and the third pin of the R1224N102H chip is connected between the second resistor and the third resistor.

8. The charging and discharging power supply battery with the same port as claimed in claim 6, wherein the field effect tube is a QO4407 integrated tube.