CN211995182U - Extremely fast charging source for vehicle and circuit thereof - Google Patents

Extremely fast charging source for vehicle and circuit thereof Download PDF

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Publication number
CN211995182U
CN211995182U CN202020772020.1U CN202020772020U CN211995182U CN 211995182 U CN211995182 U CN 211995182U CN 202020772020 U CN202020772020 U CN 202020772020U CN 211995182 U CN211995182 U CN 211995182U
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circuit
mcu
battery
internal resistance
battery pack
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CN202020772020.1U
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刘纪真
范晟淞
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Shenzhen Kaiyuan Shengshi Technology Co ltd
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Shenzhen Kaiyuan Shengshi Technology Co ltd
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Abstract

The utility model discloses a very fast charging source and its circuit for vehicle, wherein the circuit is including the charge-discharge interface, battery pack, detection control circuit and the ultralow internal resistance switch circuit that are used for receiving external input power or external load, and the positive pole of battery pack is connected with the positive pole of charge-discharge interface, includes the first group battery that is formed by six lithium batteries in series and the second group battery that is formed by seven lithium batteries in series; the detection control circuit comprises a first MCU and a second MCU which are connected through a communication pin, the first MCU or the second MCU detects that the battery in the battery pack is overcharged or undervoltage, and the second MCU switches off the ultra-low internal resistance switch circuit to stop charging or discharging. The utility model discloses, adopt columniform high magnification graphite alkene power lithium cell, the cooperation possesses integrated protect function's circuit board, and ultralow internal resistance switch circuit adopts COOL-MOS pipe, possesses the low-power consumption characteristic, has reduced monomer MOSFET's on the system product conduction loss, and sustainable 50A charges and discharges has improved the efficiency of system product.

Description

Extremely fast charging source for vehicle and circuit thereof
Technical Field
The utility model relates to a portable power source technical field, concretely relates to extremely fast charging source and circuit for vehicle.
Background
A detachable power supply for a vehicle is finding more and more applications in various fields, commonly referred to as a battery, as a means of instantly charging the vehicle. The storage battery is generally internally provided with a battery, has an electric power storage function and can charge the vehicle body.
The common storage battery adopts a lead-acid battery or a lithium battery, and the lead-acid storage battery has short service life and poor energy-saving and environment-friendly performance. In order to overcome the defect and prolong the service life of the battery, chinese patent CN106058342A discloses a starting battery, which comprises a battery assembly and a battery management system, wherein the battery assembly is composed of a plurality of lithium ion batteries with positive and negative electrodes led out in the same direction, the positive electrode of the battery assembly is electrically connected with a positive electrode head through the battery management system, the negative electrode of the battery assembly is electrically connected with a negative electrode head through the battery management system, and the battery management system is used for managing the battery assembly. However, in the technical scheme, the charging and discharging circuit adopts a plurality of MOS tubes and resistors to control the magnitude of the charging or discharging current, but the on-state impedance is large, so that large conduction loss exists, the charging efficiency is low, and the charging time is long.
In view of this, there is a need for an improved power supply structure for a vehicle, which is convenient to use and improves charging efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that there is inconvenient to use, problem that charge efficiency is low in the power structure that current vehicle used.
In order to solve the technical problem, the utility model provides a technical scheme who adopts provides a circuit that is used for the extremely fast quick charging source of vehicle, including the charge-discharge interface that is used for receiving external input power or external load, still include:
the positive electrode of the battery assembly is connected with the positive electrode of the charge-discharge interface, and the battery assembly comprises a first battery pack formed by connecting six lithium batteries in series and a second battery pack formed by connecting seven lithium batteries in series;
the detection control circuit comprises a first MCU and a second MCU which are connected through a communication pin, wherein an overcharge and overdischarge detection circuit is arranged between the first MCU and the first battery pack, and an overcharge and overdischarge detection circuit is arranged between the second MCU and the second battery pack;
the ultralow internal resistance switch circuit adopts two groups of COOL-MOS tubes which are connected in parallel, wherein two COOL-MOS tubes in each group are connected in series and are arranged between the detection control circuit and the negative electrode of the charge-discharge interface; and the first MCU or the second MCU detects that the battery in the battery pack is overcharged or undervoltage, and the second MCU switches off the ultralow internal resistance switching circuit to stop charging or discharging.
In another preferred embodiment, an over-current acceleration turn-off circuit is arranged between the second MCU and the ultra-low internal resistance switch circuit, and the over-current acceleration turn-off circuit is communicated with a DO pin of the second MCU.
In another preferred embodiment, the ultra-low internal resistance switching circuit is connected to a gate set driving amplification circuit, and one end of the gate set driving amplification circuit is communicated with a CO pin of the second MCU.
In another preferred embodiment, the second MCU is connected to an over-temperature protection circuit, and the second MCU turns off the ultra-low internal resistance switching circuit according to the temperature of the over-temperature protection circuit exceeding a predetermined temperature.
In another preferred embodiment, the second MCU is provided with an overcurrent and short-circuit detection circuit, and the second MCU turns off the ultra-low internal resistance switching circuit according to an abnormal signal of the overcurrent and short-circuit detection circuit.
In another preferred embodiment, an overvoltage locking diode is respectively arranged between the first MCU and the second MCU and the overcharge and overdischarge detection circuit.
The utility model also discloses a very fast charging source for vehicle, include the casing and arrange in the circuit of above-mentioned structure in the casing, the battery adopts columniform high magnification graphite alkene power lithium cell.
Compared with the prior art, the utility model discloses, following advantage has:
1. the ultra-low internal resistance switching circuit adopts a COOL-MOS tube, has the characteristics of low power consumption, low internal resistance, high current and high voltage resistance, greatly reduces the conduction loss of a single MOSFET on a system product, can charge and discharge by 50A continuously, and improves the efficiency of the system product.
2. The dual-core MCU and the high-integration detection chip are adopted to replace the conventional multi-triode component mode, the integration level and the energy efficiency ratio of the whole circuit are enhanced, and the size of the circuit board is greatly reduced.
3. Applicable on electric vehicles such as all kinds of electric bicycle, electric tricycle, electric motorcycle, electric automobile, can make the storage battery of various different capacities as required, solve the long pain point of present electric vehicle storage battery charge time, use the charger of standard on the market to do the utility model discloses charge, charge time T (minute) 60 storage battery capacity/50, can be full of the standard storage battery of a 48V, 15AH in 30 minutes the fastest.
Drawings
Fig. 1 is a schematic circuit block diagram of the present invention;
fig. 2 is a circuit diagram of the present invention.
Detailed Description
The utility model provides a very fast charging source and circuit for vehicle, it is right to combine the description attached drawing and detailed implementation mode below the utility model discloses make the detailed description.
As shown in fig. 1 and fig. 2, the utility model provides a circuit for very fast quick charging source of vehicle, including the charge-discharge interface that is used for receiving external input power or external load, still include battery pack 20, detect control circuit 10 and ultra-low internal resistance switch circuit 40.
The positive electrode of the battery assembly 20 is connected to the positive electrode of the charge/discharge interface 80, and the battery assembly 20 includes a first battery pack 21 formed by connecting six lithium batteries in series and a second battery pack 22 formed by connecting seven lithium batteries in series.
The detection control circuit 10 comprises a first MCU 11 and a second MCU 12 connected through communication pins, an overcharge and overdischarge detection circuit 72 is arranged between the first MCU 11 and the first battery pack 21, and an overcharge and overdischarge detection circuit 72 is arranged between the second MCU 12 and the second battery pack 22.
The ultra-low internal resistance switch circuit 40 adopts two groups of COOL-MOS tubes 41 which are connected in parallel, wherein each group of COOL-MOS tubes 41 is two in series and is arranged between the detection control circuit 10 and the negative electrode of the charge-discharge interface 80; when the first MCU 11 or the second MCU 12 detects that the battery in the battery pack 20 is overcharged or undervoltage, the second MCU 12 turns off the ultra-low internal resistance switching circuit 40 to stop charging or discharging. As shown in fig. 2, one group of COOL-MOS transistors 41 close to the negative electrode of the charge-discharge interface 80 is responsible for turning off the battery pack when the battery pack is overcharged and charged at high temperature, and the other group of COOL-MOS transistors 41 is responsible for turning off the battery pack when the battery is undervoltage, external short circuit, external overcurrent, and internal battery pack is over-temperature.
The utility model discloses the interface integration that will charge and discharge is one, and it is more convenient to use. In actual production and use, the charging interface and the discharging interface are also suitable for the condition that the charging interface and the discharging interface are independently arranged.
The utility model discloses, utilize COOL-MOS pipe 41 to replace prior art's VDMOS pipe, the sustainable 50A of ultralow internal resistance switch circuit 40 discharges, and 15 AH's level charge time T is 60 15000/50000 is 18 min.
In another preferred embodiment, an excess current acceleration turn-off circuit 30 is arranged between the second MCU 12 and the ultra-low internal resistance switch circuit 40, and the excess current acceleration turn-off circuit 30 is communicated with the DO pin of the second MCU 12. In a normal state, the DO pin of the second MCU 12 is at a high voltage, the MOS transistor 41 of the ultra-low internal resistance switching circuit 40 is normally turned on, and if an under-voltage occurs, the DO pin output is 0, the MOS transistor 41 is turned off, and the discharging is stopped.
In another preferred embodiment, the ultra-low internal resistance switching circuit 40 is connected to the gated set driving amplifying circuit 50, and one end of the gated set driving amplifying circuit 50 is connected to the CO pin of the second MCU 12. In a normal state, the CO pin of the second MCU 12 is at a high voltage, the MOS transistor 41 of the ultra-low internal resistance switching circuit 40 is normally turned on, and if overcharge occurs, the CO pin is changed to a voltage of 0 to turn off the MOS, and the charging is stopped. The gate set driving amplifying circuit 50 is used to improve the driving capability of the circuit.
In another preferred embodiment, the second MCU 12 is connected to the over-temperature protection circuit 80, and the second MCU 12 turns off the ultra-low internal resistance switching circuit 40 according to the temperature of the over-temperature protection circuit 80 exceeding a predetermined temperature. The over-temperature protection circuit 80 is used for detecting the temperature on the circuit board outside the battery pack 20, the detected signal TS1 is connected to pins 16 and 17 of the second MCU 12, if the over-temperature occurs, the pins CO and DO of the second MCU 12 will be at 0 voltage at the same time, the MOS is turned off, and the operation state is suspended.
In another preferred embodiment, the second MCU 12 is provided with an over-current and short-circuit detection circuit 60, and the second MCU 12 turns off the ultra-low internal resistance switching circuit 40 according to an abnormal signal of the over-current and short-circuit detection circuit 60. The utility model discloses in, whether utilize overcurrent, short circuit detection circuitry 60 to detect to charge or discharge in have the electric current too big, the electric current phenomenon, if there is MOS pipe 41 who closes off ultralow internal resistance switch circuit 40 immediately, play the electric current guard action.
In another preferred embodiment, an over-voltage locking diode 71 is provided between the first MCU 11 and the second MCU 12 and the over-charge and over-discharge detection circuit 72, respectively. The utility model discloses, overcharge overdischarge detection circuitry 72 is used for the voltage of each section battery of real-time detection, and when under-voltage or overcharging, second MCU 12 turn-offs ultra-low internal resistance switch circuit 40, and battery pack 20's battery performance, increase of service life are further protected to superpressure locking diode 71.
The utility model also discloses a very fast charging source for vehicle, including the casing with arrange the circuit of the above-mentioned structure in the casing in, the battery adopts columniform high magnification graphite alkene power lithium cell.
The utility model discloses, following advantage has:
1. the ultra-low internal resistance switching circuit adopts a COOL-MOS tube, has the characteristics of low power consumption, low internal resistance, high current and high voltage resistance, greatly reduces the conduction loss of a single MOSFET on a system product, can charge and discharge by 50A continuously, and improves the efficiency of the system product.
2. The dual-core MCU and the high-integration detection chip are adopted to replace the conventional multi-triode component mode, the integration level and the energy efficiency ratio of the whole circuit are enhanced, and the size of the circuit board is greatly reduced.
3. Applicable on electric vehicles such as all kinds of electric bicycle, electric tricycle, electric motorcycle, electric automobile, can make the storage battery of various different capacities as required, solve the long pain point of present electric vehicle storage battery charge time, use the charger of standard on the market to do the utility model discloses charge, charge time T (minute) 60 storage battery capacity/50, can be full of the standard storage battery of a 48V, 15AH in 30 minutes the fastest.
The present invention is not limited to the above-mentioned best mode, and any person should learn the structural change made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.

Claims (7)

1. A circuit that is used for very fast charge power supply of vehicle, is including the charge-discharge interface that is used for receiving external input power supply or external load, its characterized in that still includes:
the positive electrode of the battery assembly is connected with the positive electrode of the charge-discharge interface, and the battery assembly comprises a first battery pack formed by connecting six lithium batteries in series and a second battery pack formed by connecting seven lithium batteries in series;
the detection control circuit comprises a first MCU and a second MCU which are connected through a communication pin, wherein an overcharge and overdischarge detection circuit is arranged between the first MCU and the first battery pack, and an overcharge and overdischarge detection circuit is arranged between the second MCU and the second battery pack;
the ultralow internal resistance switch circuit adopts two groups of COOL-MOS tubes which are connected in parallel, wherein two COOL-MOS tubes in each group are connected in series and are arranged between the detection control circuit and the negative electrode of the charge-discharge interface; and the first MCU or the second MCU detects that the battery in the battery pack is overcharged or undervoltage, and the second MCU switches off the ultralow internal resistance switching circuit to stop charging or discharging.
2. The circuit of claim 1, wherein an over-current acceleration turn-off circuit is arranged between the second MCU and the ultra-low internal resistance switch circuit, and the over-current acceleration turn-off circuit is communicated with a DO pin of the second MCU.
3. The circuit of claim 1, wherein the ultra-low internal resistance switching circuit is connected to a gate set driving amplification circuit, and one end of the gate set driving amplification circuit is communicated with the CO pin of the second MCU.
4. The circuit of claim 1, wherein the second MCU is connected to an over-temperature protection circuit, and the second MCU turns off the ultra-low internal resistance switching circuit according to the over-temperature protection circuit temperature exceeding a predetermined temperature.
5. The circuit of claim 1, wherein the second MCU is provided with an over-current and short-circuit detection circuit, and the second MCU turns off the ultra-low internal resistance switching circuit according to an abnormal signal of the over-current and short-circuit detection circuit.
6. The circuit of claim 1, wherein an over-voltage locking diode is disposed between each of the first and second MCUs and the overcharge and overdischarge detection circuit.
7. A very fast charging source for vehicles, which is characterized by comprising a shell and the circuit of any one of claims 1 to 6 arranged in the shell, wherein the battery adopts a cylindrical high-rate graphene power lithium battery.
CN202020772020.1U 2020-05-11 2020-05-11 Extremely fast charging source for vehicle and circuit thereof Active CN211995182U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020772020.1U CN211995182U (en) 2020-05-11 2020-05-11 Extremely fast charging source for vehicle and circuit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020772020.1U CN211995182U (en) 2020-05-11 2020-05-11 Extremely fast charging source for vehicle and circuit thereof

Publications (1)

Publication Number Publication Date
CN211995182U true CN211995182U (en) 2020-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020772020.1U Active CN211995182U (en) 2020-05-11 2020-05-11 Extremely fast charging source for vehicle and circuit thereof

Country Status (1)

Country Link
CN (1) CN211995182U (en)

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