CN211183468U

CN211183468U - Circulation rechargeable battery

Info

Publication number: CN211183468U
Application number: CN201922349248.XU
Authority: CN
Inventors: 林圣发
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-04
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a circulation rechargeable battery, constitute its characterized in that including shell, electric core, circuit board: the utility model uses the recyclable charging cell to act on the energy storage unit, so that the recycling use is realized, the environment is greatly protected, and the resources are saved; the conversion efficiency is improved compared with the traditional asynchronous rectification by adopting the synchronous rectification booster circuit; by adopting an intelligent algorithm, the output voltage can be automatically reduced in proportion along with the reduction of the cell voltage, and the problem that the constant voltage battery cannot prompt the low power of equipment is solved; when the current is less than 80mA when the voltage is normally opened at 9V or the voltage is in a no-load state, the circuit works in a PFM mode, the power consumption of the circuit is lower than 25uA, and the standby time is greatly prolonged; a single-chip scheme with high integration of charging/discharging is adopted, and 4.5V-16V input is supported by input, so that the circuit is simple; by adopting overcurrent and short-circuit protection of the control chip, the output is automatically closed when short circuit occurs, the two-pole protection of the battery cell cannot be closed, and charging activation is not needed; the utility model discloses a direct dress of pasting of output just, negative pole connector is openly at the circuit board, need not rivet and wiring, simple process.

Description

Circulation rechargeable battery

Technical Field

The utility model belongs to the technical field of lithium battery charging, discharge, the voltage that mainly relates to USBC interface charging input and this product boost output reduces to 5.0V from 9.5V gradually along with the reduction of the built-in lithium cell voltage of product and ends, and the curve that can simulate 9V carbon battery and 9V alkaline battery basically discharges.

Background

1: the existing general 9V carbon battery or 9V alkaline battery has wide application, but the batteries are disposable batteries and can be discarded when the electricity is used up, thereby causing great waste on social resources and serious pollution to the environment. 2: the existing similar products which also adopt lithium battery cores as energy storage are boosted to 9V constant voltage output through a DC-DC booster circuit, but the output 9V is boosted in a DC-DC asynchronous rectification PWM current mode, and the overall conversion efficiency of asynchronous rectification and boosting is low. (the 1000mAh/3.7V battery can release 350-370mAh/9V after being boosted to 9V). Because the PWM mode booster circuit has the self-loss of about 270-300uA/h for keeping the output of the voltage at the constant voltage of 9V, even if the constant voltage of the output port is not loaded at all, the DC-DC asynchronous rectification PWM mode booster circuit has the self-loss all the time, the electricity is lost by about 5-7mAh in about one day, and a lot of energy is wasted. Because the voltage is increased from a single lithium battery to a fixed 9V, the output end of the internal energy storage battery cell is always constant at 9V no matter how much capacity the electric quantity is left, and when the internal energy storage battery cell is connected to an external electronic device, the electronic device cannot read the residual capacity of the battery according to the change of the power supply voltage. (for example, a digital multimeter and a wireless microphone can judge whether the battery is dead or not according to the voltage of the power supply battery so as to prompt a user to replace the battery in time, if the voltage is fixed to 9V, the electronic equipment cannot judge that the battery is low in use so as to prompt the user to suddenly cut off the power supply). 3, the existing constant voltage 9V output lithium battery adopts a charging and discharging separated mode, the circuit is complex, the charging input voltage is 4.5-5.5V, and the voltage is boosted by the constant voltage 9V and then is directly connected to a 9V standard connector, if the 9V standard connector is short-circuited, a battery protection chip arranged in a circuit board is closed, the battery protection chip can be reactivated only by charging at the moment, and if a user does not have a charging wire, the battery protection chip can not be used temporarily. The positive and negative connectors of the 3 batteries are fixed on the plastic sheet of the shell by rivets and then connected to the battery core or the circuit board by a lead.

Disclosure of Invention

The utility model provides a circulation rechargeable battery to solve the defect among the above-mentioned background art.

A circulating rechargeable battery comprises a shell, an electric core and a circuit board, wherein the shell is composed of a face cover and a bottom cover, a capacity space is formed in the middle of the shell, the electric core is located in the capacity space, the circuit board is located at one end of the shell, an output positive electrode connector and an output negative electrode connector are arranged on the front face of the circuit board in parallel, the output positive electrode connector and the output negative electrode connector are directly adhered to the front face of the circuit board, a USBC input port is arranged below the circuit board, and a boost energy storage inductor, an electric core two-pole protection circuit module, a main control chip, an L ED charging indicator light and a L ED full indicator light are arranged on the back.

The main control chip is a charging and DC-DC synchronous rectification and boosting three-in-one chip and comprises a constant current-constant voltage-charging management chip module, a synchronous rectification and boosting control circuit, an output overcurrent short circuit module and a charging indicating circuit module.

When the circularly charged battery is charged, an external power supply is input from an input port of the USBC, the constant current-constant voltage-charging management chip module of the main control chip is connected, the constant current-constant voltage-charging management chip module is input into the battery cell bipolar protection circuit module, the charging current charges the battery cell after passing through the battery cell bipolar protection circuit module, the charging indication circuit module on the control chip controls the working state of the L ED indicator lamp, the L ED charging indicator lamp is on when the battery cell is charged, and the L ED full-charging indicator lamp is on after the battery cell is full.

When the circularly charged battery is discharged: the cell voltage is input to the synchronous rectification boost control circuit through the cell two-pole protection circuit module, is converted into 9.5V-5.0V voltage, then is output after passing through the flow short circuit module, and the 9.5V-5.0V voltage is output from the output positive connector and the output negative connector after passing through the flow short circuit module.

Preferably, a through hole is formed in the front end of the bottom cover, and the USBC input port is located in the through hole after the battery is integrally mounted.

Preferably, a light hole is formed in one side of the through hole of the bottom cover, and light of the L ED charging indicator lamp penetrates through the light hole.

The utility model has the advantages that: the utility model uses the recyclable charging cell to act on the energy storage unit, so that the recycling use is realized, the environment is greatly protected, and the resources are saved; the conversion efficiency is improved compared with the traditional asynchronous rectification by adopting the synchronous rectification booster circuit; by adopting an intelligent algorithm, the output voltage can be automatically reduced in proportion along with the reduction of the cell voltage, and the problem that the constant voltage battery cannot prompt the low power of equipment is solved; when the current is less than 80mA when the voltage is normally opened at 9V or the voltage is in a no-load state, the circuit works in a PFM mode, the power consumption of the circuit is lower than 25uA, and the standby time is greatly prolonged; a single-chip scheme with high integration of charging/discharging is adopted, and 4.5V-16V input is supported by input, so that the circuit is simple; by adopting overcurrent and short-circuit protection of the control chip, the output is automatically closed when short circuit occurs, the two-pole protection of the battery cell cannot be closed, and charging activation is not needed; the utility model discloses a direct dress of pasting of output just, negative pole connector is openly at the circuit board, need not rivet and wiring, simple process.

[ description of the drawings ]

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a flow chart of charging and discharging of the present invention;

FIG. 3 is a schematic diagram of circuit elements on the back of the circuit board of the present invention;

fig. 4 is a schematic circuit diagram of the present invention.

FIG. 5 is a schematic view of the overall appearance of the present invention

Fig. 6 is a graph of output voltage.

The battery comprises a shell 1, a face cover 11, a bottom cover 12, a through hole 121, a light hole 122, a battery cell 2, a circuit board 3, an output positive electrode connecting hole 3a, an output negative electrode connecting hole 3b, a USBC input port 3c, a boosting energy storage inductor 3d, a battery cell diode protection circuit module 3e, a main control chip 3f, a constant current-constant voltage-charging management chip module 3f1, a synchronous rectification boosting control circuit and output overcurrent short circuit module 3f2, a charging indication circuit module 3f3, a L ED charging indication lamp 3g1 and a L ED full indicator lamp 3g 2.

[ detailed description ] embodiments

Referring to fig. 1-6, a circulating rechargeable battery comprises a shell 1, an electric core 2 and a circuit board 3, wherein the shell 1 comprises a face cover 11 and a bottom cover 12, a containing space is formed in the middle of the shell, the electric core 2 is located in the containing space, the circuit board 3 is located at one end of the shell 1, an output positive electrode connecting hole 3a and an output negative electrode connecting hole 3b are arranged on the front face of the circuit board 3 in parallel, the output positive electrode connector 3a and the output negative electrode connector 3b are directly adhered to the front face of the circuit board 3, a USBC input port 3c is arranged at the joint of the lower portion of the circuit board 3 and the shell 1, and a boosting energy storage inductor 3d, an electric core two-pole protection circuit module 3e, a main control chip 3f, L ED charging indicator lamps 3g1 and L ED full indicator lamp 3g2 are arranged.

The main control chip 3f is a charging and DC-DC synchronous rectification boosting three-in-one chip, and comprises a constant current-constant voltage-charging management chip module 3f1, a synchronous rectification boosting control circuit, an output overcurrent short circuit module 3f2 and a charging indication circuit module 3f 3.

The utility model discloses during the charging, external power source is from USBC input port 3c input, the constant current-constant voltage-charge management chip module 3f1 of access main control chip 3f, through constant current-constant voltage-charge management chip module 3f1 input electric core dipolar protection circuit module 3e, charging current charges for electric core 2 behind electric core dipolar protection circuit module 3e, charge indicator circuit module 3f3 control L ED on the main control chip 3f charge indicator operating condition, electric core 2 charges, L ED charge indicator 3g1 is bright, electric core 2 is full of the back, L ED is full of indicator 3g2 and is bright.

The utility model discloses during discharge: the voltage of the battery cell 2 is input to the synchronous rectification boost control circuit through the battery cell diode protection circuit module 3e, is converted into 9.5V-5.0V, is output after passing through the current short circuit module, and the voltage of 9.5V-5.0V is output from the output positive connector 3a and the output negative connector 3b after passing through the current short circuit module 3f 2.

Preferably, a through hole 121 is formed at the front end of the bottom cover 12, and after the battery is mounted as a whole, the USBC input port 3c is located in the through hole 121.

Preferably, a light hole 122 is formed at one side of the through hole 121 of the bottom cover 12, and light of the L ED charging indicator lamps 3g1 and L ED full indicator lamp 3g2 is transmitted through the light hole 122.

The utility model is characterized in that:

1: the disposable battery is changed into a recyclable battery, so that the energy-saving and environment-friendly effects are achieved; the output positive and negative connectors are two pads with corresponding sizes which are designed at corresponding positions on the outward surface of the main control circuit board according to the size of a standard 9V battery connector, solder paste is printed on the circuit board during production, the standard 9V battery output positive and negative connectors are directly pasted on the main control circuit board through pasting equipment of a pasting machine, no wire connection is needed, no fixing to the plastic is needed, and the manufacturing process is simplified.

2: the utility model discloses a DC-DC boost conversion circuit of synchronous rectification technique, the whole conversion efficiency ratio of DC-DC boost conversion circuit of synchronous rectification technique is higher, (the battery of 1000mAh/3.7V can emit 400 after stepping up to 9V and give 420 mAh/9V's electric quantity). And when the output current is less than 80mA, the boost circuit works in a PFM mode, the self-loss of the boost circuit is lower than 25uA/h when the output current is normally open at 9V, about 0.6-1mAh of electricity is lost in about one day, and the static standby time of the same-capacity battery cell is greatly prolonged compared with that of the traditional current mode PWM boost circuit (for example, the battery cell is also 500MAH,

other boosting products are fully charged and can stand by: 500mAh/7mAh =71.42 days,

and the utility model discloses but same 500mAh battery standby: 500mAh/1mAh =500 days).

3, the utility model discloses output voltage changes along with the voltage variation of built-in lithium cell, adopts through reading electric core voltage, changes boost converter PWM duty cycle and makes output voltage change according to the settlement parameter. When the built-in lithium battery is fully charged, the battery voltage is about 4.2V, the output voltage is about 9.5V at the moment, and the voltage of 9.5V is reduced along with the reduction of the voltage of the built-in lithium battery cell. When the voltage of the built-in lithium battery cell is reduced to 3.0V, the output end is about 5.0V. The entire discharge process simulates a standard carbonaceous and alkaline 9V cell. (see fig. 6), solve the problem that the external device needs to read the power supply battery power to prompt the user of low power.

4, the utility model discloses a fill/put highly integrated single-chip scheme to the input supports 4.5V-16V input, and the circuit is simple. The chip has overcurrent and short-circuit protection, and the 9V output connector is short-circuited and the boosting chip can be automatically closed, so that the secondary protection chip of the battery cell cannot be closed. When short circuit or overcurrent is removed, the circuit can be automatically activated without charging activation.

The utility model discloses discharge voltage corresponds form

Figure DEST_PATH_690055DEST_PATH_IMAGE001

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A circulating rechargeable battery comprises a shell, an electric core and a circuit board, and is characterized in that the shell consists of a face cover and a bottom cover, a capacity space is formed in the middle, the electric core is positioned in the capacity space, the circuit board is positioned at one end of the shell, an output positive electrode connector and an output negative electrode connector are arranged on the front face of the circuit board in parallel, the output positive electrode connector and the output negative electrode connector are directly adhered to the front face of the circuit board, a USBC input port is arranged below the circuit board, and a boosting energy storage inductor, an electric core two-pole protection circuit module, a main control chip, an L ED charging indicator lamp and a L ED full indicator lamp are arranged on the back face of the circuit;

the main control chip is a charging and DC-DC synchronous rectification and boosting three-in-one chip and comprises a constant current-constant voltage-charging management chip module, a synchronous rectification and boosting control circuit, an output overcurrent short circuit module and a charging indication circuit module;

when the circulating charging battery is charged, an external power supply is input from an input port of the USBC, the constant current-constant voltage-charging management chip module of the main control chip is connected, the constant current-constant voltage-charging management chip module is input into a battery cell bipolar protection circuit module, and charging current charges a battery cell after passing through the battery cell bipolar protection circuit module;

2. The rechargeable battery pack of claim 1, wherein the bottom cover has a through hole at the front end, and the USBC input port is located in the through hole when the battery is mounted as a whole.

3. The rechargeable battery pack as claimed in claim 1, wherein a light hole is formed at one side of the through hole of the bottom cover, and light from an L ED charging indicator lamp is emitted through the light hole.