CN105337328B - Charging circuit and system for rechargeable battery - Google Patents
Charging circuit and system for rechargeable battery Download PDFInfo
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- CN105337328B CN105337328B CN201410390624.9A CN201410390624A CN105337328B CN 105337328 B CN105337328 B CN 105337328B CN 201410390624 A CN201410390624 A CN 201410390624A CN 105337328 B CN105337328 B CN 105337328B
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Abstract
The invention discloses a kind of charging circuits and system for rechargeable battery.Wherein, which includes: the first IGBT, and drain electrode is connected with the anode of DC bus, and source electrode is connected with the anode of rechargeable battery；First diode, cathode are connected with the drain electrode of the first IGBT, and anode is connected with the source electrode of the first IGBT；2nd IGBT, drain electrode are connected with the source electrode of the first IGBT, and source electrode is connected with the cathode of DC bus；Second diode, cathode are connected with the drain electrode of the 2nd IGBT, and anode is connected with the source electrode of the first IGBT；First current sensor is connected between the source electrode of the first IGBT and the anode of rechargeable battery；Second current sensor is connected between the source electrode of the first IGBT and the anode of rechargeable battery；And control circuit, it is respectively connected with the grid of the first IGBT, grid, the first current sensor and the second current sensor of the 2nd IGBT.Through the invention, the reliability for improving charging station system has been achieved the effect that.
Description
Technical field
The present invention relates to charging equipment fields, in particular to a kind of charging circuit and system for rechargeable battery.
Background technique
For the energy that electric car uses from the power battery of large-capacity high-power density, power battery is can be repeatedly
What charging used.In view of the characteristic of power battery itself, it is necessary to which using direct current to it to charging, and power plant issues
And the electricity for carrying out transmission distribution belongs to alternating current, cannot be used directly to battery and charge, so must design
Suitable supply convertor carries out the conversion of electric energy.According to the design method of electric automobile charging station, the charging of electric car
Equipment can be divided into AC/DC charging equipment and DC/DC charging equipment, and DC/DC charging equipment needs carry under DC bus.With
AC/DC equipment is compared, and DC/DC charging equipment can save the conversion process of an AC-to DC, therefore efficiency in principle
It is higher.
Above-mentioned AC/DC charging equipment and DC/DC charging equipment, energy is all one-way flow, that is to say, that can only
It charges the battery, and can not discharge battery.When needing to discharge to battery, it usually needs unidirectional by two
DC/DC equipment reverse parallel connection use, this has the following problems charging equipment:
Increased costs: mostly increase a set of equipment, cost also correspondingly increase.
It reduces reliability: due to increasing a set of equipment, so that circuit node increases, reducing the reliable of charging station system
Property.
Increase difficulty: when needing to change battery charging and discharging mode, then needing to reconnect route, increase scene
The difficulty of work.
Aiming at the problem that increasing the reliability reduction for leading to charging station system due to circuit node in the prior art, at present still
It does not put forward effective solutions.
Summary of the invention
The main purpose of the present invention is to provide a kind of charging circuits and system for rechargeable battery, to solve existing skill
Since circuit node increases the problem of causing the reliability of charging station system to reduce in art.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of charging electricity for rechargeable battery
Road.Charging circuit according to the present invention includes: the first IGBT, and the drain electrode of the first IGBT is connected with the anode of DC bus, the
The source electrode of one IGBT is connected with the anode of rechargeable battery；First diode, the leakage of the cathode of first diode and the first IGBT
Pole is connected, and the anode of first diode is connected with the source electrode of the first IGBT；2nd IGBT, the drain electrode and first of the 2nd IGBT
The source electrode of IGBT is connected, and the source electrode of the 2nd IGBT is connected with the cathode of DC bus；Second diode, the second diode
Cathode is connected with the drain electrode of the 2nd IGBT, and the anode of the second diode is connected with the source electrode of the first IGBT；First electric current passes
Sensor is connected between the source electrode of the first IGBT and the anode of rechargeable battery, for detecting the charging current of rechargeable battery；Second
Current sensor is connected between the source electrode of the first IGBT and the anode of rechargeable battery, for detecting the electric discharge electricity of rechargeable battery
Stream；And control circuit, grid, the first current sensor and the second current sense with the grid of the first IGBT, the 2nd IGBT
Device is respectively connected with, for controlling being switched on or switched off for the first IGBT, and control second according to charging current and discharge current
IGBT's is switched on or switched off.
Further, charging circuit further include: Absorption Capacitance, the first end of Absorption Capacitance are connected with the drain electrode of the first IGBT
It connects, the second end of Absorption Capacitance is connected with the source electrode of the 2nd IGBT, releases for absorbing during the first IGBT is switched on or switched off
The spike energy put, alternatively, for absorbing the spike energy discharged during the 2nd IGBT is switched on or switched off.
Further, charging circuit further include: the first filter capacitor is connected between the anode of DC bus and cathode,
For being filtered to the direct current that DC bus exports；Second filter capacitor, be connected to rechargeable battery anode and cathode it
Between, for being filtered to the direct current that rechargeable battery inputs.
Further, charging circuit further include: the first absorption resistance, it is in parallel with the first filter capacitor, for absorbing first
The electric energy of filter capacitor release；Second absorption resistance, it is in parallel with the second filter capacitor, for absorbing the release of the second filter capacitor
Electric energy.
Further, charging circuit further include: the first load is connected between the anode of DC bus and cathode；Second
Load, is connected between the anode of rechargeable battery and cathode.
Further, charging circuit further include: first voltage sensor, be connected to DC bus anode and cathode it
Between, for detecting the voltage at DC bus both ends；Second voltage sensor, is connected between the anode of rechargeable battery and cathode,
For detecting the voltage at rechargeable battery both ends.
Further, charging circuit further include: the first sub- charging circuit is connected to the power delivery circuit of the anode of DC bus
On, for limiting the surge current of DC bus output；Second sub- charging circuit is connected to the transmission of electricity electricity of the anode of rechargeable battery
On the road, for limiting the surge current of rechargeable battery output.
Further, the first sub- charging circuit includes: the first branch and second branch, and the first branch and second branch are simultaneously
Connection, the first branch are arranged on the power delivery circuit of anode of DC bus, wherein and the first branch includes the first D.C. contactor,
Second branch includes the first relay and first resistor, and the first relay is connected with first resistor, and the second sub- charging circuit includes:
The transmission of electricity of the anode of rechargeable battery is arranged in third branch and the 4th branch, third branch and the 4th branch circuit parallel connection, third branch
On circuit, wherein third branch include the second D.C. contactor, the 4th branch include the second relay and second resistance, second
Relay is connected with second resistance.
Further, charging circuit further include: energy storage inductor, the source electrode of the first end of energy storage inductor and the first IGBT and the
The drain electrode of two IGBT is respectively connected with, and the second end of energy storage inductor is connected with the anode of rechargeable battery.
To achieve the goals above, according to another aspect of the present invention, a kind of Charging for rechargeable battery is provided
System.Charging system according to the present invention includes: the above-mentioned charging circuit for rechargeable battery.
According to embodiments of the present invention, using the first IGBT11, the 2nd IGBT12, first diode D1, the second diode D2,
The charging circuit that first current sensor 13, the second current sensor 14 and control circuit 15 are formed, without increasing new DC/DC
The charging and discharging control of rechargeable battery can be realized in equipment, and solve causes to fill since circuit node increases in the prior art
The problem of reliability of electric power station system reduces has achieved the effect that the reliability for improving charging station system.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the circuit diagram of the charging circuit according to an embodiment of the present invention for rechargeable battery；
Fig. 2 is the circuit diagram for being preferably used in the charging circuit of rechargeable battery according to embodiments of the present invention；And
Fig. 3 is a kind of schematic diagram of charging system for rechargeable battery according to an embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
The embodiment of the invention provides a kind of charging circuits for rechargeable battery.
Fig. 1 is the circuit diagram of the charging circuit according to an embodiment of the present invention for rechargeable battery.The charging circuit includes:
First IGBT11, the 2nd IGBT12, first diode D1, the second diode D2, the first current sensor 13, the second current sense
Device 14 and control circuit 15.
The drain electrode of first IGBT11 is connected with the positive V+ of DC bus, the source electrode of the first IGBT11 and rechargeable battery
Positive VBAT+ is connected；The cathode of first diode D1 is connected with the drain electrode of the first IGBT11, the anode of first diode D1
It is connected with the source electrode of the first IGBT11；The drain electrode of 2nd IGBT12 is connected with the source electrode of the first IGBT11, the 2nd IGBT12
Source electrode be connected with the cathode V- of DC bus；The cathode of second diode D2 is connected with the drain electrode of the 2nd IGBT12, the
The anode of two diode D2 is connected with the source electrode of the first IGBT11；First current sensor 13 is connected to the source of the first IGBT11
Between pole and the positive VBAT+ of rechargeable battery, for detecting the charging current i of rechargeable batteryo；The connection of second current sensor 14
Between the source electrode of the first IGBT11 and the positive VBAT+ of rechargeable battery, for detecting the discharge current i of rechargeable batteryi；Control
Grid, the first current sensor 13 and the second current sensor 14 of the grid of circuit 15 and the first IGBT11, the 2nd IGBT12
It is respectively connected with, for according to charging current ioWith discharge current iiControl being switched on or switched off for the first IGBT11, and control the
Two IGBT12's is switched on or switched off.In Fig. 1, V- is the cathode of DC bus, and VBAT- is the cathode of rechargeable battery.
First current sensor 13 and 14 differential concatenation of the second current sensor in circuit, are respectively used to detection battery and fill
Electric current when electricity and battery discharge；Control circuit 15 receives the first current sensor 13 and the second current sensor 14 is sent
The parameters such as electric current the PWM wave of certain duty ratio is generated by internal logic judgment and control algolithm, for controlling two
IGBT's turns on and off, and maintains energy smooth transport.
The topological structure that the charging circuit of the embodiment of the present invention uses charges the battery for bi-directional half bridge converter
When, bi-directional half bridge converter is equivalent to a Buck circuit.When discharging battery, bi-directional half bridge converter is equivalent to one
Boost circuit.Relative to other two-way DC/DC converters, bi-directional half bridge converter has switch element (the first IGBT11 and the
Two IGBT12) and the voltage and current stress of diode (first diode D1 and the second diode D2) it is small, the conducting of active device
The advantages that small, high-efficient is lost.
According to embodiments of the present invention, using the first IGBT11, the 2nd IGBT12, first diode D1, the second diode D2,
The charging circuit that first current sensor 13, the second current sensor 14 and control circuit 15 are formed, without increasing new DC/DC
The charging and discharging control of rechargeable battery can be realized in equipment, and solve causes to fill since circuit node increases in the prior art
The problem of reliability of electric power station system reduces has achieved the effect that the reliability for improving charging station system.
As shown in Fig. 2, charging circuit further include: Absorption Capacitance C1, the first end of Absorption Capacitance C1 and the first IGBT11's
Drain electrode is connected, and the second end of Absorption Capacitance C1 is connected with the source electrode of the 2nd IGBT12, connects for absorbing the first IGBT11
Or the spike energy discharged in disconnection process, alternatively, for absorbing the spike discharged during the 2nd IGBT12 is switched on or switched off
Energy.
Absorption Capacitance can be axial noninductive Absorption Capacitance, the noninductive absorption electricity of an axial direction in parallel at two both ends IGBT
Hold, for absorbing the spike energy discharged in two IGBT switching processes, avoids the spike energy due to release to charging station system
The damage of system.
Preferably, charging circuit further include: the first filter capacitor C2, be connected to DC bus positive V+ and cathode V- it
Between, for being filtered to the direct current that DC bus exports；Second filter capacitor C3 is connected to the positive VBAT of rechargeable battery
+ between cathode VBAT-, for being filtered to the direct current that rechargeable battery inputs.
First filter capacitor C2 is used for the voltage and current ripple of smooth DC bus output, and the second filter capacitor C3 is for putting down
The voltage and current ripple of sliding rechargeable battery input.
Preferably, charging circuit further include: the first absorption resistance R1, it is in parallel with the first filter capacitor C2, for absorbing the
The electric energy of one filter capacitor C2 release；Second absorption resistance R2, it is in parallel with the second filter capacitor C3, for absorbing the second filtered electrical
Hold the electric energy of C2 release.
During the work time due to the first filter capacitor C2 and the second filter capacitor C3, certain electric energy can be stored, is being filled
When battery stops charge or discharge, these electric energy can be discharged into circuit, by using the first absorption resistance R1 and second
Absorption resistance R2 is used to absorb the energy of above-mentioned capacitor release when shutting down.
Preferably, charging circuit further include: the first load 16 is connected between the positive V+ of DC bus and cathode V-；
Second load 17, is connected between the positive VBAT+ of rechargeable battery and cathode VBAT-.First load 16 is in DC bus
Circuit is protected when lateral circuit zero load, the second load 17 is for protecting circuit in rechargeable battery lateral circuit zero load
Shield.
Preferably, charging circuit further include: first voltage sensor 18 is connected to the positive V+ and cathode V- of DC bus
Between, for detecting the voltage at DC bus both ends；Second voltage sensor 19, be connected to rechargeable battery positive VBAT+ and
Between cathode VBAT-, for detecting the voltage at rechargeable battery both ends.
Wherein, control circuit is also respectively connected with first voltage sensor 18 and second voltage sensor 19, for connecing
The voltage signal of voltage sensor output is received, to realize the control to circuit.
Preferably, charging circuit further include: the first sub- charging circuit is connected to the power delivery circuit of the anode of DC bus
On, for limiting the surge current of DC bus output；Second sub- charging circuit is connected to the transmission of electricity electricity of the anode of rechargeable battery
On the road, for limiting the surge current of rechargeable battery output.
Specifically, the first sub- charging circuit includes: the first branch and second branch, and the first branch and second branch are in parallel,
The first branch is arranged on the power delivery circuit of positive V+ of DC bus, wherein and the first branch includes the first D.C. contactor 20,
Second branch includes the first relay K1 and first resistor R3, and the first relay K1 connect with first resistor R3, and second sub charges
Circuit includes: third branch and the 4th branch, and rechargeable battery is being arranged in just in third branch and the 4th branch circuit parallel connection, third branch
On the power delivery circuit of pole VBAT+, wherein third branch includes the second D.C. contactor 21, and the 4th branch includes the second relay
K2 and second resistance R4, the second relay K2 connect with second resistance R4.
The both ends of charging circuit are respectively connected to by resistance, pre-charge circuit that relay and D.C. contactor are constituted (i.e. the
One sub- charging circuit and the second sub- charging circuit), it can be used for limiting DC bus and battery in start process and filtered to first
Surge current caused by capacitor C2 and the second filter capacitor C3 instantaneously charges.
Preferably, charging circuit further include: the source electrode of energy storage inductor L, the first end of energy storage inductor L and the first IGBT11 and
The drain electrode of 2nd IGBT12 is respectively connected with, and the second end of energy storage inductor L is connected with the positive VBAT+ of rechargeable battery.
Energy storage inductor L can be used for electric energy, complete energy conversion.
The embodiment of the invention provides a kind of charging systems for rechargeable battery.
The charging system for being used for rechargeable battery includes: the charging electricity provided in an embodiment of the present invention for rechargeable battery
Road.
Specifically, PID control is a kind of technology maturation, widely used control method.Its structure is simple, does not need really
The mathematical model cut, it is easy to accomplish.The digital control method that the present invention uses is increment type PI control, belongs to PID control method
One of.
Digitial controller used in the embodiment of the present invention is TMS320F28335, it is a floating type that TI company releases
Digital signal dsp processor, the processor have merged the integrated functionality of control peripheral hardware and the ease for use of microprocessor, have had powerful
Control and signal handling capacity and C language programming efficiency, can be realized complicated control algolithm, obtained in Industry Control
It is widely applied.Meanwhile the processor is able to carry out complicated floating-point operation, can save code and execute time and storage sky
Between, there are high high precision, at low cost, small power consumption, peripheral hardware integrated level, data and program amount of storage is big and A/D conversion is more accurate fast
The advantages that fast.TMS320F28335 passes through the circuit parameters such as voltage-current sensor and processing of circuit circuit collection voltages electric current,
PI adjusting is completed by software algorithm internal, the PWM wave of duty ratio needed for exporting is used to drive the on-off of IGBT pipe, guarantees
The smooth transport of amount.
The embodiment of the present invention is protected with input and output overvoltage/undervoltage, overcurrent protection, driving power protection and driving overcurrent
The defencive functions such as protection.As shown in figure 3, voltage/current sensor acquires input and output voltage electric current, by voltage current transformation
Circuit transmission is given to Complex Programmable Logic Devices (Complex Programmable Logic Device, referred to as CPLD),
By the combination of logical relation inside CPLD, one group of output by 4 two-stage system arrays at fault code, the fault code of generation
4 road general input/output ports of dsp chip are connected to by 4 pins of CPLD, DSP is by reading the output of these universal inputs
The state of mouth, it can be determined that the specific failure of generation.
The charging system of the embodiment of the present invention also has display screen, the operation interface straightforward on the display screen.Behaviour
Make interface be touch LCD screen, by the liquid crystal display can easily set charging equipment charge parameter,
The information such as Protection parameters and operating mode, while the liquid crystal display can also show charge mode, charged state and failure shape
The information such as state.
The embodiment of the present invention has the CAN interface of two-way correspondence with foreign country in real time, can be connected to host computer all the way, by upper
Machine carries out remote monitor to charging equipment；It can be connected to battery management system (BMS system) all the way, by logical with BMS system
Letter, charging equipment can obtain the status information of battery at any time, to automatically adjust charge parameter.
The running parameter of the charging system of the embodiment of the present invention are as follows:
Input voltage: 700 ± 40V；
Output voltage: 150-300V；
Charging current: 0-75A；
Discharge current: 0-75A；
The precision of voltage regulation :≤± 1%；
Precision of steady current :≤± 1%；
Ripple factor :≤± 1%；
Full load efficiency: >=92%；
Fig. 3 is system block diagram of the invention, as shown in figure 3, dsp controller TMS320F28335 is control core, input
Input terminal is sampled by being sent into the AD of dsp chip after CPLD logical process after the sampled processing of the voltage and current signal of output, is adopted
Sample data are handled by internal algorithm, realize that PI adjusts algorithm inside dsp chip, and the PWM wave of duty ratio needed for generating should
PWM wave inputs CPLD, IGBT drive circuit is sent to after the logical process of CPLD, after the amplification of IGBT drive circuit
It is given to the control terminal of IGBT again, for turning on and off for IGBT, to achieve the purpose that closed-loop control.In addition, dsp chip is logical
It crosses CAN interface to be connected with display screen, the operating mode of charger can be set by manual setting display screen, display screen can also
To be used to show the parameters such as charging/discharging voltage, electric current and charge and discharge time under charger normal operating conditions, meanwhile, display screen
There are two-way CAN interface, it can be respectively connected to BMS system and master system, realize charger and BMS system and host computer
Communication.
Pass through foregoing description, it can be seen that the embodiment of the present invention can achieve following effect:
1. the embodiment of the present invention can both charge to battery, it can also be used to battery discharge.Each parameter of charge and discharge, which is fully met, to be set
Meter requires.
2. the charging system of the embodiment of the present invention charges to battery, there are constant-voltage charge mode and constant current charging mode；It is right
It is constant-current discharge mode when battery discharge.
3. the charging system of the embodiment of the present invention can be communicated when carrying out charge and discharge with battery management system, according to
The demand of battery management system exports certain voltage and current.And it can be automatically complete according to the requirements of battery management system
At the switching between constant current charging mode and constant-voltage charge mode.
4. the charging system of the embodiment of the present invention can with communicated from the background, by from the background come the operation feelings of control module
Condition, the monitor screen that can also be carried by equipment carry out the setting of operating mode.
5. the charging system of the embodiment of the present invention works normally, monitoring display screen can show given charge and discharge electricity
The parameters such as pressure, current value and actual charging/discharging voltage, current value and the time of charge and discharge.
6. the charging system of the embodiment of the present invention breaks down, meeting autostop, while display screen can show failure generation
Code information, the type of failure can be detected by fault code, provides indicative function for malfunction elimination.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of charging circuit for rechargeable battery characterized by comprising
The drain electrode of first IGBT, the first IGBT are connected with the anode of DC bus, the source electrode of the first IGBT with fill
The anode of battery is connected；
First diode, the cathode of the first diode are connected with the drain electrode of the first IGBT, the first diode
Anode be connected with the source electrode of the first IGBT；
The drain electrode of 2nd IGBT, the 2nd IGBT are connected with the source electrode of the first IGBT, the source electrode of the 2nd IGBT
It is connected with the cathode of the DC bus；
Second diode, the cathode of second diode are connected with the drain electrode of the 2nd IGBT, second diode
Anode be connected with the source electrode of the first IGBT；
First current sensor is connected between the source electrode of the first IGBT and the anode of the rechargeable battery, for detecting
The charging current of the rechargeable battery；
Second current sensor is connected between the source electrode of the first IGBT and the anode of the rechargeable battery, for detecting
The discharge current of the rechargeable battery；And
Control circuit, grid, the first current sensor and the second electric current with the grid of the first IGBT, the 2nd IGBT
Sensor is respectively connected with, and connects on-off for control the first IGBT according to the charging current and the discharge current
It opens, and controls being switched on or switched off for the 2nd IGBT；
Wherein, the charging circuit further include: the first filter capacitor is connected between the anode and cathode of the DC bus,
Direct current for exporting to the DC bus is filtered；Second filter capacitor is connected to the anode of the rechargeable battery
Between cathode, the direct current for inputting to the rechargeable battery is filtered；
Wherein, the charging circuit further include: the first absorption resistance, it is in parallel with first filter capacitor, it is described for absorbing
The electric energy of first filter capacitor release；Second absorption resistance, it is in parallel with second filter capacitor, for absorbing second filter
The electric energy of wave capacitor release；
Wherein, the topological structure that the charging circuit for rechargeable battery uses is bi-directional half bridge converter；
Wherein, the charging circuit further include: the first sub- charging circuit is connected to the power delivery circuit of the anode of the DC bus
On, for limiting the surge current of the DC bus output；
Wherein, the described first sub- charging circuit includes: the first branch and second branch, the first branch and the second branch
Parallel connection, the first branch are arranged on the power delivery circuit of anode of the DC bus, wherein the first branch includes the
One D.C. contactor, the second branch include the first relay and first resistor, and first relay is electric with described first
Resistance series connection.
2. charging circuit according to claim 1, which is characterized in that the charging circuit further include:
Absorption Capacitance, the first end of the Absorption Capacitance are connected with the drain electrode of the first IGBT, and the of the Absorption Capacitance
Two ends are connected with the source electrode of the 2nd IGBT, for absorbing the spike discharged during the first IGBT is switched on or switched off
Energy, alternatively, for absorbing the spike energy discharged during the 2nd IGBT is switched on or switched off.
3. charging circuit according to claim 1, which is characterized in that the charging circuit further include:
First load, is connected between the anode and cathode of the DC bus；
Second load, is connected between the anode and cathode of the rechargeable battery.
4. charging circuit according to claim 1, which is characterized in that the charging circuit further include:
First voltage sensor is connected between the anode and cathode of the DC bus, for detecting the DC bus two
The voltage at end；
Second voltage sensor is connected between the anode and cathode of the rechargeable battery, for detecting the rechargeable battery two
The voltage at end.
5. charging circuit according to claim 1, which is characterized in that the charging circuit further include:
Second sub- charging circuit is connected on the power delivery circuit of anode of the rechargeable battery, for limiting the rechargeable battery
The surge current of output.
6. charging circuit according to claim 5, which is characterized in that the second sub- charging circuit includes:
Third branch and the 4th branch, the third branch and the 4th branch circuit parallel connection, the third branch are arranged described
On the power delivery circuit of the anode of rechargeable battery, wherein the third branch includes the second D.C. contactor, the 4th branch packet
The second relay and second resistance are included, second relay is connected with the second resistance.
7. charging circuit according to claim 1, which is characterized in that the charging circuit further include:
The drain electrode of the source electrode and the 2nd IGBT of energy storage inductor, the first end of the energy storage inductor and the first IGBT is distinguished
It is connected, the second end of the energy storage inductor is connected with the anode of the rechargeable battery.
8. a kind of charging system for rechargeable battery characterized by comprising use described in any one of claims 1 to 7
In the charging circuit of rechargeable battery.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410390624.9A CN105337328B (en) | 2014-08-08 | 2014-08-08 | Charging circuit and system for rechargeable battery |
| PCT/CN2014/093198 WO2016019667A1 (en) | 2014-08-08 | 2014-12-05 | Charging circuit and system for rechargeable battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107154666A (en) * | 2017-07-20 | 2017-09-12 | 山东圣阳电源股份有限公司 | A kind of batteries management system and electric power system |
| CN107154665B (en) * | 2017-07-20 | 2024-01-02 | 山东圣阳电源股份有限公司 | Charging and discharging combiner and power supply system |
| WO2019037033A1 (en) * | 2017-08-24 | 2019-02-28 | 海门市品格工业设计有限公司 | Electric vehicle direct-current charger based on dsp_cpld control |
| CN108279728A (en) * | 2018-04-08 | 2018-07-13 | 深圳市必易微电子有限公司 | Exchange turns direct current linear voltage-stabilizing circuit |
| CN108736873A (en) * | 2018-08-23 | 2018-11-02 | 深圳市德利和能源技术有限公司 | Electronic DC switch |
| CN111479350A (en) * | 2020-04-15 | 2020-07-31 | 上海赫爽太阳能科技有限公司 | Method for controlling solar simulator flash waveform by combining discharge network with IGBT |
| CN112744101B (en) * | 2020-12-25 | 2023-02-17 | 中国第一汽车股份有限公司 | Charging and discharging control system and method and vehicle |
| CN113036723A (en) * | 2021-03-30 | 2021-06-25 | 国网河北省电力有限公司雄安新区供电公司 | DC-DC converter and overcurrent protection circuit thereof |
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| CN105337328A (en) | 2016-02-17 |
| WO2016019667A1 (en) | 2016-02-11 |
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