CN209434919U - Intelligent lithium battery charge management circuit - Google Patents

Intelligent lithium battery charge management circuit Download PDF

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Publication number
CN209434919U
CN209434919U CN201920249165.0U CN201920249165U CN209434919U CN 209434919 U CN209434919 U CN 209434919U CN 201920249165 U CN201920249165 U CN 201920249165U CN 209434919 U CN209434919 U CN 209434919U
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China
Prior art keywords
lithium battery
semiconductor
oxide
metal
diode
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CN201920249165.0U
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Chinese (zh)
Inventor
吴伙土
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Wardstrom (xiamen) Technology Co Ltd
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Wardstrom (xiamen) Technology Co Ltd
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Priority to CN201920249165.0U priority Critical patent/CN209434919U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a kind of Intelligent lithium battery charge management circuits, it is characterized by comprising charging management chip U2, metal-oxide-semiconductor Q7, diode D10, the connection component VUSB of external+5V, system working power Vin, lithium battery J1 and electric quantity monitoring MCU, No. 4 output terminals of the charging management chip U2 respectively with metal-oxide-semiconductor Q7, diode D10, connection component VUSB is connected in series, the metal-oxide-semiconductor Q7 connects with system working power Vin again after being connected in parallel with diode D10, No. 2 positive terminals of the lithium battery J1 respectively with metal-oxide-semiconductor Q7, No. 3 BAT terminals connection of charging pipeline chip U2, the electric quantity monitoring MCU is connect by the two divider resistance R58 and R59 that connect with system working power Vin, institute It states charging management chip U2, lithium battery J1, electric quantity monitoring MCU and is designed with ground protection;System is directly by external power supply, and lithium battery is in fully charged state, and charge efficiency is high, and the charging time is short, meets people's fast charge demand, easy to use simple and direct.

Description

Intelligent lithium battery charge management circuit
Technical field
The utility model belongs to electronic circuit field, in particular to a kind of intelligent management circuit of lithium battery charging.
Background technique
Many electronic products are all built-in with lithium battery in our daily lifes, and electricity charges after exhausting, lithium electricity Pond is typically all charge by USB, and for existing lithium battery charges, lithium battery is on one side charge while to system when charging It being powered, is in non-fully charged state, this state powered when filling can satisfy certain use demand, but There are larger defects, and charge efficiency is low, and the charging time is long, are unable to satisfy people's quick charge demand, inconvenient to use.
The technical problem to be solved by the present invention is to provide one kind without powering when filling, always in fully charged shape State, charge efficiency is high, the charging time is short, meets people's fast charge demand, simple and direct Intelligent lithium battery Charge Management electricity easy to use Road.
Utility model content
For solve the above-mentioned prior art be in non-fully charged state, power when filling, charge efficiency is low, the charging time The problems such as growing, being unable to satisfy people's fast charge demand, is inconvenient to use, the utility model adopts the following technical solution:
The utility model provides a kind of Intelligent lithium battery charge management circuit, it is characterised in that: including charging management chip U2, metal-oxide-semiconductor Q7, diode D10, the connection component VUSB of external+5V, system working power Vin, lithium battery J1 and electric quantity monitoring No. 4 output terminals of MCU, the charging management chip U2 are connected with metal-oxide-semiconductor Q7, diode D10, connection component VUSB company respectively It connecing, the metal-oxide-semiconductor Q7 connects with system working power Vin again after being connected in parallel with diode D10, and No. 2 of the lithium battery J1 Positive terminal is connect with No. 3 BAT terminals of metal-oxide-semiconductor Q7, the pipeline chip U2 that charges respectively, and the electric quantity monitoring MCU passes through series connection Two divider resistance R58 and R59 are connect with system working power Vin, the charging management chip U2, lithium battery J1, electricity prison It surveys MCU and is designed with ground protection.
The utility model has the beneficial effects that: system is directly by external power supply, lithium battery is in fully charged state, fills Electrical efficiency is high, and the charging time is short, meets people's fast charge demand, easy to use simple and direct.
Detailed description of the invention
Fig. 1 is a kind of electrical block diagram of embodiment of the utility model.
Specific embodiment
The preferred embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
Referring to Fig. 1, a kind of Intelligent lithium battery charge management circuit, it is characterised in that: including charging management chip U2, Metal-oxide-semiconductor Q7, diode D10, the connection component VUSB of external+5V, system working power Vin, lithium battery J1 and electric quantity monitoring No. 4 output terminals of MCU, the charging management chip U2 are connected with metal-oxide-semiconductor Q7, diode D10, connection component VUSB company respectively It connecing, the metal-oxide-semiconductor Q7 connects with system working power Vin again after being connected in parallel with diode D10, and No. 2 of the lithium battery J1 Positive terminal is connect with No. 3 BAT terminals of metal-oxide-semiconductor Q7, the pipeline chip U2 that charges respectively, and the electric quantity monitoring MCU passes through series connection Two divider resistance R58 and R59 are connect with system working power Vin, the charging management chip U2, lithium battery J1, electricity prison It surveys MCU and is designed with ground protection.
When external+5V is to system power supply, metal-oxide-semiconductor Q7 cut-off, lithium battery will not be conducting to system working power by Q7 Vin;D10 conducting, system working power Vin are all provided by external power supply+5V.VUSB provides work to whole system at this time Power supply is charged by charging management chip U2 to lithium battery J1.When no external+5V power supply, lithium battery J1 anode is led to Q7 Lead to and be connected to Vin, powers to whole system.
The signal CHG of lithium battery charging management chip U2.1, when charging to lithium battery, CHG exports low level, lithium outward When battery charging saturation finishes, CHG is high-impedance state;This signal is connected to MCU, and MCU is checked whether and finished having charged;
The signal PRG of lithium battery charging management chip U2.6 is outer connecting resistance, and lithium battery charging current is given in setting, The external 2K Ω resistance of this electric current at present, it is 400mA that the electric current to charge to lithium battery, which is arranged,.
There are two divider resistance R58 and R59 in circuit, this voltage signal of center tap voltage P0_6 is connected to the AD of MCU Pin, the voltage of real-time monitoring whole system lithium battery, and then intuitively battery dump energy is shown to user.
The utility model has the beneficial effects that: system is directly by external power supply, lithium battery is in fully charged state, fills Electrical efficiency is high, and the charging time is short, meets people's fast charge demand, easy to use simple and direct.
The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field The appropriate changes or modifications that those of ordinary skill does it all should be regarded as the patent category for not departing from the utility model.

Claims (1)

1. a kind of Intelligent lithium battery charge management circuit, it is characterised in that: including charging management chip U2, metal-oxide-semiconductor Q7, diode D10, the connection component VUSB of external+5V, system working power Vin, lithium battery J1 and electric quantity monitoring MCU, the Charge Management No. 4 output terminals of chip U2 respectively with metal-oxide-semiconductor Q7, diode D10, connection component VUSB be connected in series, the metal-oxide-semiconductor Q7 with Diode D10 connects with system working power Vin again after being connected in parallel, No. 2 positive terminals of the lithium battery J1 respectively with MOS No. 3 BAT terminals connection of pipe Q7, the pipeline chip U2 that charges, the electric quantity monitoring MCU by two divider resistance R58 of series connection and R59 is connect with system working power Vin, and the charging management chip U2, lithium battery J1, electric quantity monitoring MCU are designed with ground connection and protect Shield.
CN201920249165.0U 2019-02-27 2019-02-27 Intelligent lithium battery charge management circuit Active CN209434919U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920249165.0U CN209434919U (en) 2019-02-27 2019-02-27 Intelligent lithium battery charge management circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920249165.0U CN209434919U (en) 2019-02-27 2019-02-27 Intelligent lithium battery charge management circuit

Publications (1)

Publication Number Publication Date
CN209434919U true CN209434919U (en) 2019-09-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920249165.0U Active CN209434919U (en) 2019-02-27 2019-02-27 Intelligent lithium battery charge management circuit

Country Status (1)

Country Link
CN (1) CN209434919U (en)

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