CN114006459A - Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method - Google Patents

Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method Download PDF

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Publication number
CN114006459A
CN114006459A CN202111300312.0A CN202111300312A CN114006459A CN 114006459 A CN114006459 A CN 114006459A CN 202111300312 A CN202111300312 A CN 202111300312A CN 114006459 A CN114006459 A CN 114006459A
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CN
China
Prior art keywords
secondary battery
power supply
circuit
vehicle
mcu
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Pending
Application number
CN202111300312.0A
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Chinese (zh)
Inventor
金浩植
金英花
廉仁淳
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Yinxinwei Wuxi Technology Co ltd
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Yinxinwei Wuxi Technology Co ltd
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Priority to CN202111300312.0A priority Critical patent/CN114006459A/en
Publication of CN114006459A publication Critical patent/CN114006459A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304Overcurrent protection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The application relates to a vehicle-mounted terminal secondary battery charging circuit and a vehicle-mounted terminal secondary battery charging method, relating to the field of vehicle-mounted terminals, wherein the vehicle-mounted terminal secondary battery charging circuit comprises: the solar energy charging device comprises a solar charging panel, a vehicle internal power supply, a secondary battery, a micro control unit MCU, a secondary battery power supply circuit, an MCU power supply circuit, a first power supply selection switch and a second power supply selection switch. The vehicle internal power supply is arranged in the charging circuit, and corresponding wiring is correspondingly carried out, so that the vehicle internal power supply, the secondary battery and the MCU are connected. In the process of charging, when unable utilizing solar charging panel, can switch to the mode of supplying power to secondary battery and MCU through the vehicle internal power source through the comparative mode of electric current size, when the electric current that solar charging panel can provide is less, guarantee to charge to secondary battery simultaneously to the efficiency of supplying power is carried out to MCU.

Description

Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method
Technical Field
The present disclosure relates to the field of vehicle terminals, and more particularly, to a charging circuit and a charging method for a secondary battery of a vehicle terminal.
Background
The secondary battery or the charging pile refers to a battery which is semi-permanently used by charging and generates electricity in the process that the current supplied by an external power supply generates a substance redox reaction between a positive electrode and a negative electrode. The primary battery has a disadvantage in that the battery cannot be reused once used, but the secondary battery has an advantage of being charged several times. Among the secondary batteries are lithium ion/lithium polymer batteries. In this case, a Micro Controller Unit (MCU) is provided in correspondence with the secondary battery as a control module of the in-vehicle terminal.
In the related art, by performing the setting of the solar charging panel on the vehicle, the charging of the secondary battery in the vehicle by the solar charging panel can be realized. Generally, the power of the solar charging panel is in direct proportion to the number and size of the solar shells in the solar charging panel, and the larger the number of the solar shells in the solar charging panel is, the larger the total area is, the larger the current and voltage which can be output by the corresponding solar charging panel are.
However, due to the requirement of the driver's view and the limitation of the inherent structure of the vehicle, the total area of the solar charging panel on the vehicle should not be too large, and in this case, the output power of the solar charging panel in the related art is limited, and the efficiency of simultaneously charging the secondary battery and supplying power to the MCU cannot be ensured.
Disclosure of Invention
The application relates to a vehicle-mounted terminal secondary battery charging circuit, which can simultaneously guarantee the efficiency of charging a secondary battery and supplying power to an MCU (micro control unit) in the process of charging the secondary battery. The technical scheme is as follows:
on one hand, the charging circuit of the secondary battery of the vehicle-mounted terminal is provided, and comprises a solar charging panel, a vehicle internal power supply, a secondary battery, a Micro Control Unit (MCU), a secondary battery power supply circuit, an MCU power supply circuit, a first power supply selection switch and a second power supply selection switch;
the solar charging panel and the power supply inside the vehicle are respectively connected with the first power supply selection switch;
the vehicle internal power supply and the secondary battery are respectively connected with the second power supply selection switch;
the first power supply selection switch is connected with the secondary battery through a secondary battery power supply circuit;
the second power selection switch is connected with the MCU through the MCU power circuit.
In another aspect, there is provided an in-vehicle terminal secondary battery charging method including:
receiving a first current of a solar charging panel and a second current of a vehicle internal power supply in response to the secondary battery being in a state to be charged;
in response to the current intensity of the second current being greater than the current intensity of the first current, sending a vehicle internal power selection signal to the first power switch, the vehicle internal power selection signal being indicative of power being supplied to the secondary battery by the vehicle internal power;
and sending an MCU power supply selection signal to the second power switch, wherein the MCU power supply selection signal is used for indicating that the MCU is powered by the vehicle internal power supply.
The beneficial effect that technical scheme that this application provided brought includes at least:
the vehicle internal power supply is arranged in the charging circuit, and corresponding wiring is correspondingly carried out, so that the vehicle internal power supply, the secondary battery and the MCU are connected. In the process of charging, when unable utilizing solar charging panel, can switch to the mode of supplying power to secondary battery and MCU through the vehicle internal power source through the comparative mode of electric current size, when the electric current that solar charging panel can provide is less, guarantee to charge to secondary battery simultaneously to the efficiency of supplying power is carried out to MCU.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 shows a schematic configuration diagram of a secondary battery charging circuit in the related art;
fig. 2 is a schematic diagram illustrating a secondary battery charging circuit according to an exemplary embodiment of the present application;
fig. 3 is a flowchart illustrating a method for charging a secondary battery according to an exemplary embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of a secondary battery charging circuit in the related art, and in the secondary battery charging circuit 100, a solar charging panel 101, a secondary battery 102, an MCU103, a secondary battery power supply circuit 104, a secondary battery protection circuit 105, and an MCU power supply circuit 106 are included. In the related art, in the case where the solar charging panel 101 has a power supply capability, a voltage conforming to the secondary battery 102 is supplied by the secondary battery power supply circuit 104, and the secondary battery 102 is charged. Since the current supplied from the solar charging panel 101 is low, the corresponding secondary battery protection circuit 105 is provided with only a voltage regulation function. In addition, in this case, when the voltage that can be provided by the solar charging panel is insufficient, the solar charging panel cannot supply power to the MCU of the vehicle-mounted terminal, which affects the utilization efficiency of the charging circuit.
Fig. 2 shows a schematic structural diagram of a vehicle-mounted terminal secondary charging circuit according to an exemplary embodiment of the present application. Referring to fig. 2, the charging circuit 200 includes a solar charging panel 201, a vehicle internal power supply 202, a secondary battery 203, an MCU204, a secondary battery power supply circuit 205, an MCU power supply circuit 206, a first power selection switch 207, and a second power selection switch 208; the solar charging panel and the power supply inside the vehicle are respectively connected with the first power supply selection switch; the vehicle internal power supply and the secondary battery are respectively connected with the second power supply selection switch; the first power supply selection switch is connected with the secondary battery through a secondary battery power supply circuit; the second power selection switch is connected with the MCU through the MCU power circuit.
The embodiment of the present application is not limited to the specific implementation form of the circuit.
In the embodiment of the present application, the connection relationship indicates a communication relationship and a data transmission relationship between the respective components.
It should be noted that, in the embodiment of the present application, the MCU is implemented as an MCU corresponding to the vehicle-mounted terminal, that is, the MCU may be implemented as a control module of the vehicle-mounted terminal.
In the embodiment of the present application, the vehicle internal power supply indicates a power supply used by the vehicle itself, and the power supply may be implemented as a battery module mounted inside the vehicle, or a removable battery placed inside the vehicle.
In the embodiment of the application, the first power selection switch and the second power selection switch are circuits for selecting a power supply mode, and the first power selection switch is used for determining whether the secondary battery is charged by the solar charging panel or is supplied with power by a power supply inside the vehicle; the second power selection switch is used to determine whether the MCU is powered by the vehicle internal power source or the secondary battery. In the embodiment of the present application, the first power selection switch and the second power selection switch are implemented as circuit modules having a control function.
In one example of the embodiment of the present application, the charging circuit further includes a secondary battery protection circuit 209; the secondary battery protection circuit is connected in series with the secondary battery power supply circuit, and the first power supply selection switch is connected with the secondary battery through the secondary power supply battery circuit and the secondary battery protection circuit. And the secondary battery protection circuit is an overcurrent protection circuit. Alternatively, the protection circuit realizes a protection function for the secondary battery by controlling the voltage and current of the secondary battery power supply circuit.
Based on the description of the structure of the vehicle-mounted terminal secondary charging circuit in fig. 2, fig. 3 shows a vehicle-mounted terminal secondary battery charging method provided by an exemplary embodiment of the present application, which is described by taking the method as an example applied to a computer device, and the method includes:
step 301, in response to the secondary battery being in a state to be charged, receiving a first current of the solar charging panel and a second current of the vehicle interior power source.
It should be noted that the execution subject of the embodiment of the present application is a computer device having the capability of reading data of the operating conditions such as current, voltage, and the like passed by each component in the secondary battery charging circuit. Alternatively, the computer device is implemented as a device that is connected to a secondary battery charging circuit and has communication and data processing functions.
And 302, responding to the current intensity of the second current being larger than that of the first current, sending a vehicle internal power source selection signal to the first power switch, wherein the vehicle internal power source selection signal is used for indicating that the secondary battery is powered by the vehicle internal power source.
In the embodiment of the application, the use of only one power supply is safer than the use of two power supplies. In this case, a vehicle internal power supply having a high passing current is selected as the internal power supply form. Alternatively, in this case, the computer device implements control of the first power switch by performing a function of signal transmission.
And 303, sending an MCU power supply selection signal to the second power switch, wherein the MCU power supply selection signal is used for indicating that the MCU is powered by the vehicle internal power supply.
Optionally, in some examples of the embodiments of the present application, after receiving the first current of the solar charging panel and the second current inside the vehicle, and when the amperage of the second current is not greater than the amperage of the first current, the solar charging panel selection signal is sent through the first power switch, and the solar charging panel selection signal indicates that the secondary battery is charged through the solar charging panel.
This process is complementary to the case where the second current is less than the first current when the current measurement is performed in the embodiment of the present application.
Optionally, in this embodiment of the present application, a secondary battery protection circuit is further included in the charging circuit. After the computer device sends the vehicle internal power source selection signal to the first power switch, because the output current and the output voltage of the vehicle internal power source are both large, the computer device sends a protection control signal to the secondary battery protection circuit based on the second current, and the protection control signal is used for enabling the secondary battery protection circuit to adjust the working condition of the secondary battery power source circuit. In the process of charging a secondary battery, which has been discharged for a long time, by an in-vehicle power supply, the charging current may exceed the maximum charging current specified by the manufacturer, and therefore, the current and voltage passing through the secondary battery power supply circuit are controlled by transmitting a protection control signal, and the state of charge is determined.
In summary, the device and the corresponding method provided by the embodiment of the application establish connection relationships between the vehicle internal power supply and the secondary battery as well as the MCU by setting the vehicle internal power supply in the charging circuit and correspondingly connecting the vehicle internal power supply with the MCU. In the process of charging, when unable utilizing solar charging panel, can switch to the mode of supplying power to secondary battery and MCU through the vehicle internal power source through the comparative mode of electric current size, when the electric current that solar charging panel can provide is less, guarantee to charge to secondary battery simultaneously to the efficiency of supplying power is carried out to MCU.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (5)

1. A vehicle-mounted terminal secondary battery charging circuit is characterized in that the charging circuit comprises a solar charging panel, a vehicle internal power supply, a secondary battery, a Micro Control Unit (MCU), a secondary battery power supply circuit, an MCU power supply circuit, a first power supply selection switch and a second power supply selection switch;
the solar charging panel and the vehicle internal power supply are respectively connected with the first power supply selection switch;
the vehicle internal power supply and the secondary battery are respectively connected with the second power supply selection switch;
the first power supply selection switch is connected with the secondary battery through the secondary battery power supply circuit;
the second power selection switch is connected with the MCU through the MCU power circuit.
2. The charging circuit of claim 1, further comprising a secondary battery protection circuit;
the secondary battery protection circuit is connected with the secondary battery power supply circuit in series, and the first power supply selection switch is connected with the secondary battery through the secondary power supply battery circuit and the secondary battery protection circuit;
the secondary battery protection circuit is an overcurrent protection circuit.
3. A charging method for a secondary battery of an in-vehicle terminal, which is applied to a computer device communicatively connected to the charging circuit for a secondary battery of an in-vehicle terminal according to claim 1, the method comprising:
receiving a first current of a solar charging panel and a second current of a vehicle internal power supply in response to the secondary battery being in a state to be charged;
in response to the amperage of the second current being greater than the amperage of the first current, sending a vehicle interior power source selection signal to a first power switch, the vehicle interior power source selection signal indicating that power is being supplied to the secondary battery by the vehicle interior power source;
and sending an MCU power supply selection signal to a second power switch, wherein the MCU power supply selection signal is used for indicating that the power is supplied to the MCU through the vehicle internal power supply.
4. The method of claim 3, wherein receiving the first current from the solar charging pad and the second current from the vehicle interior power source comprises:
and responding to the current intensity of the second current not being larger than the current intensity of the first current, sending a solar charging panel selection signal to a first power switch, wherein the solar charging panel selection signal is used for indicating that the secondary battery is charged through the solar charging panel.
5. The method of claim 3 or 4, wherein the charging circuit further comprises a secondary battery protection circuit;
the secondary battery protection circuit is connected with the secondary battery power supply circuit in series, the first power supply selection switch is connected with the secondary battery through the secondary power supply battery circuit and the secondary battery protection circuit, and the secondary battery protection circuit is an overcurrent protection circuit;
after the transmitting of the vehicle internal power selection signal to the first power switch, the method includes:
and sending a protection control signal to the secondary battery protection circuit based on the second current, wherein the protection control signal is used for enabling the secondary battery protection circuit to adjust the working condition of the secondary battery power supply circuit.
CN202111300312.0A 2021-11-04 2021-11-04 Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method Pending CN114006459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111300312.0A CN114006459A (en) 2021-11-04 2021-11-04 Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method

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Application Number Priority Date Filing Date Title
CN202111300312.0A CN114006459A (en) 2021-11-04 2021-11-04 Vehicle-mounted terminal secondary battery charging circuit and vehicle-mounted terminal secondary battery charging method

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641455A (en) * 1979-09-12 1981-04-18 Hitachi Ltd Ignition timing control circuit of internal combustion engine
CN101345433A (en) * 2007-07-12 2009-01-14 刘王雍杰 Solar energy and commercial power hybrid power supply apparatus and its power supply process
CN203911569U (en) * 2014-06-16 2014-10-29 陕西科技大学 Power supply apparatus for electric car
CN106300700A (en) * 2016-09-26 2017-01-04 江苏天安智联科技股份有限公司 A kind of onboard wireless charger
US20180083446A1 (en) * 2016-09-22 2018-03-22 Sunpower Corporation Plug-In Distributed Energy Resource
CN107947691A (en) * 2017-06-22 2018-04-20 上海耘硅电子有限公司 Automobile solar energy charger
CN108045336A (en) * 2017-12-01 2018-05-18 北京新能源汽车股份有限公司 Charging control method and device and vehicle
CN109075585A (en) * 2016-03-31 2018-12-21 西门子移动有限公司 The device and method of charging process for regulating cell

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5641455A (en) * 1979-09-12 1981-04-18 Hitachi Ltd Ignition timing control circuit of internal combustion engine
CN101345433A (en) * 2007-07-12 2009-01-14 刘王雍杰 Solar energy and commercial power hybrid power supply apparatus and its power supply process
CN203911569U (en) * 2014-06-16 2014-10-29 陕西科技大学 Power supply apparatus for electric car
CN109075585A (en) * 2016-03-31 2018-12-21 西门子移动有限公司 The device and method of charging process for regulating cell
US20180083446A1 (en) * 2016-09-22 2018-03-22 Sunpower Corporation Plug-In Distributed Energy Resource
CN106300700A (en) * 2016-09-26 2017-01-04 江苏天安智联科技股份有限公司 A kind of onboard wireless charger
CN107947691A (en) * 2017-06-22 2018-04-20 上海耘硅电子有限公司 Automobile solar energy charger
CN108045336A (en) * 2017-12-01 2018-05-18 北京新能源汽车股份有限公司 Charging control method and device and vehicle

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Application publication date: 20220201