CN109586382A - A kind of charger and its charging method - Google Patents
A kind of charger and its charging method Download PDFInfo
- Publication number
- CN109586382A CN109586382A CN201811467103.3A CN201811467103A CN109586382A CN 109586382 A CN109586382 A CN 109586382A CN 201811467103 A CN201811467103 A CN 201811467103A CN 109586382 A CN109586382 A CN 109586382A
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- CN
- China
- Prior art keywords
- module
- battery
- battery pack
- soc
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 33
- 230000005611 electricity Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
-
- 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
Abstract
The present invention relates to a kind of charger and its charging method, which includes exchange interface, the first charging interface, the second charging interface, the first AC/DC module, the 2nd AC/DC module and DC/DC module；Exchange the exchange side that interface connects the first AC/DC module, the DC side of first AC/DC module is connected with the first charging interface, exchange interface is also connected with the exchange side of the 2nd AC/DC module, the DC side of 2nd AC/DC module is connected with the second charging interface, and the first charging interface connects the second charging interface by DC/DC module.The present invention meets some requirements simultaneously as the SOC of battery pack and the SOC of battery, battery pack is charged by the DC/DC module in charger to battery, and vehicle-mounted DC/DC is not used, the access times of vehicle-mounted DC/DC are reduced, the service life of vehicle-mounted DC/DC is further increased.
Description
Technical field
The present invention relates to a kind of charger and its charging methods.
Background technique
The battery pack charging modes of existing market application mainly have direct current charge electricity and exchanging trickle charge and future can the phase
Wireless electromagnetic charging etc. several ways.The electric current of direct current charge is big, and additional function is few, although in contrast charging time pole
It is big to shorten, but the temperature rise of the process battery pack of DC charging is larger, along with some side reactions, such as electrolyte decomposition, electrode
Upper generation deposit, causes invertibity to reduce, battery capacity also will reduction slowly, reduce battery life, reduce cell performance
Can, influence vehicle course continuation mileage.
Under the background of technological innovation, under the functional experience of direct current charge, the charge mode of exchanging trickle charge also can not or
It lacks.Application publication number be 107623360 A of CN Chinese invention patent application document disclose vehicle charge control method,
Device, system and automobile, the charging method are as follows: when meeting the condition that battery pack charges to battery, control battery pack and storage
Vehicle-mounted DC/DC conducting between battery, battery pack charges to battery, so that battery remains certain electricity, it can
To the other equipment normal power supply of vehicle.Vehicle-mounted DC/DC use is more frequent in the charging method, since vehicle-mounted DC/DC is compared
It is more expensive for other kinds of DC/DC, moreover, damage after be not easy to replace, therefore, if vehicle-mounted DC/DC use than
It more frequently talks about, the service life of vehicle-mounted DC/DC can be reduced.
Summary of the invention
The purpose of the present invention is to provide a kind of charger and its charging methods, compare for solving vehicle-mounted DC/DC use
The problem of frequently reducing the service life of vehicle-mounted DC/DC.
To achieve the above object, the present invention proposes a kind of charger, including for accessing electric main exchange interface,
The first charging interface for being connected with battery pack, the second charging interface for being connected to the battery, the first AC/DC module,
2nd AC/DC module and DC/DC module；Exchange interface connect the first AC/DC module exchange side, the first AC/DC module it is straight
Stream side is connected with the first charging interface, exchanges interface and is also connected with the exchange side of the 2nd AC/DC module, the 2nd AC/DC module it is straight
Stream side is connected with the second charging interface, and the first charging interface connects the second charging interface by DC/DC module.
In the case where charger to be connect with vehicle, the SOC of real-time monitoring battery pack and the SOC of battery work as electricity
The SOC of Chi Bao and the SOC of battery meet some requirements simultaneously, and battery pack passes through the DC/DC module in charger to electric power storage
Pond charging, and vehicle-mounted DC/DC is not used, the access times of vehicle-mounted DC/DC are reduced, the use of vehicle-mounted DC/DC is further increased
Service life.
Further, charger further includes for obtaining electric main access signal, accumulator electric-quantity and battery pack electricity
Monitoring modular, monitoring modular is connected with control module, control module control connection the first AC/DC module, the 2nd AC/DC mould
Block and DC/DC module.
The automation that charging monitoring is realized by monitoring modular and control module is not necessarily to artificial monitoring, further to save
Human resources can also improve working efficiency.
In addition, it is also proposed that a kind of charging method for being exclusively used in charger, comprising the following steps:
(1) SOC of the SOC and battery of real-time monitoring battery pack；
(2) when the SOC of battery less than first setting charging upper limit value, and the SOC of battery pack be greater than setting discharge threshold
When, control starting DC/DC module makes battery pack charge a battery.
In the case where charger to be connect with vehicle, the SOC of real-time monitoring battery pack and the SOC of battery work as electricity
The SOC of Chi Bao and the SOC of battery meet some requirements simultaneously, and battery pack passes through the DC/DC module in charger to electric power storage
Pond charging, and vehicle-mounted DC/DC is not used, the access times of vehicle-mounted DC/DC are reduced, the use of vehicle-mounted DC/DC is further increased
Service life.
Further, charging method further include:
Charge threshold is set when the SOC for monitoring battery pack is less than, and the SOC of battery is less than in the second setting charging
Limit value, control the first AC/DC module of starting and the 2nd AC/DC module, make electric main charge to battery pack and battery.
When the SOC of battery pack is less than setting low value, charges to battery pack, guarantee the normal operation of vehicle.
Detailed description of the invention
Fig. 1 is the structure chart of charger of the present invention；
Fig. 2 is the schematic diagram of charger of the present invention；
Fig. 3 is work flow diagram of the invention.
Specific embodiment
Charger embodiment:
As shown in Figure 1, 2, charger includes exchange interface, the first charging interface and the second charging interface, and exchange interface connects
It is connected to the exchange side of the first AC/DC module, the DC side of the first AC/DC module is connected with the first charging interface；Exchange interface also
The exchange side of the 2nd AC/DC module is connected, the DC side of the 2nd AC/DC module is connected with the second charging interface, and charger also wraps
DC/DC module is included, DC/DC module is connected with the first charging interface, the second charging interface.
Wherein, exchange interface is for accessing electric main, and the first charging interface with battery pack for being connected, the second charging
Interface is for being connected to the battery, and the first AC/DC module is the AC/DC voltage changing module (battery pack) in Fig. 2, for that will exchange
Alternating current is converted into charged with direct current in battery pack, and the 2nd AC/DC module is the AC/DC voltage reduction module (battery) in Fig. 2, uses
In converting charged with direct current in battery for electric main, DC/DC module is used to convert battery for the voltage of battery pack
Voltage make battery pack charging in battery, DC/DC module is the DC/DC voltage reduction module in Fig. 2.
In the present embodiment, in order to realize automatic control charge mode, charger further includes monitoring modular and control module,
Monitoring modular is connected with control module, the first AC/DC module of control module control connection, the 2nd AC/DC module and DC/DC mould
Block, monitoring modular are used to monitor the access of electric main and the SOC of battery pack and battery, are used as other embodiment party certainly
Formula, in the case where personal monitoring, monitoring modular can also not have with control module, or using other interior control moulds
Block is controlled together, and monitoring modular directly can also provide data by BMS monitoring modular, is analyzed, is controlled, so also
Space can further be saved.
The course of work that charger charges as shown in figure 3, specifically:
1) SOC of the SOC and battery of charger monitoring modular real-time monitoring battery pack, while monitoring electric main and be
It is no to have connection, it is mainly realized and is monitored by signal acquisition.
2) when lower limit value (setting charge threshold) of the SOC of monitoring module monitors to battery pack lower than setting, vehicle is mentioned
Show that battery pack needs to charge (by battery pack SOC numerical value in instrument or vehicle-carrying display screen or battery pack SOC progress bar or electricity
Pond packet SOC numerical value shows etc. that display patterns are shown, redden with color state or show state with certain in conjunction with progress bar
One frequency scintillation is prompted).After monitoring module monitors are connected to charger to electric main, monitoring module is to acquisition
After data are handled, output services are instructed to control module, and charger is connected to external electric main (generally to be exchanged
220V), control module controls the first AC/DC module output high direct voltage (determining according to the voltage platform of battery pack) to battery
Packet charging；Monitoring modular also monitors the SOC of battery simultaneously, when (the second setting charging upper limit of SOC < 100% of battery
Value) when, control module controls the 2nd AC/DC module output low-voltage direct (determining according to the voltage platform of battery) to electric power storage
Pond charging.Until monitoring module monitors reach 100% to battery pack SOC and battery SOC, control system controls charger
Stop charging, charger and external electric main connected state disconnect.
For this charging process, it is to charge simultaneously to battery pack and battery, as other embodiments, is also possible to
It first charges to battery pack, battery pack charges a battery full of after, until battery pack and battery are completely filled with.
3) when (charger is not accessing electric main, electricity to the SOC for monitoring battery pack in the normal range (NR) of setting
Abundance does not need charged state, when being also possible to be greater than setting discharge threshold), but battery SOC is lower than the lower limit value of setting
When (the first setting charging upper limit value), monitoring modular sends the signal to control module, and control battery pack passes through DC/DC module
Direct current is exported, is charged a battery, until monitoring that the SOC of battery reaches 100%, control module control battery pack is stopped
It only charges, charger and battery pack and battery disconnect.
The present invention essentially consists in the link circuit by charger, battery pack and battery, is carried out according to monitoring data
Control analysis controls existing electric main and reversely exports direct current to the positive input dc power and battery pack of battery pack, battery
Control, while can realize high voltage direct current input conversion low-voltage direct output function.
It is exclusively used in the charging method embodiment of above-mentioned charger:
Charging method, comprising the following steps:
(1) SOC of the SOC and battery of real-time monitoring battery pack；
(2) when the SOC of battery less than first setting charging upper limit value, and the SOC of battery pack be greater than setting discharge threshold
When, control starting DC/DC module makes battery pack charge a battery.
The detailed process of charging method has been discussed in detail in above-mentioned charger embodiment, is not described herein.
Claims (4)
1. a kind of charger, which is characterized in that including for accessing electric main exchange interface, for what is be connected with battery pack
First charging interface, the second charging interface for being connected to the battery, the first AC/DC module, the 2nd AC/DC module and DC/
DC module；The exchange interface connects the exchange side of the first AC/DC module, the DC side of the first AC/DC module with
First charging interface is connected, and the exchange interface is also connected with the exchange side of the 2nd AC/DC module, the 2nd AC/DC mould
The DC side of block is connected with the second charging interface, and first charging interface is filled by DC/DC module connection described second
Electrical interface.
2. charger according to claim 1, which is characterized in that the charger further includes connecing for obtaining electric main
Enter the monitoring modular of signal, accumulator electric-quantity and battery pack electricity, the monitoring modular is connected with control module, the control mould
The first AC/DC module of block control connection, the 2nd AC/DC module and DC/DC module.
3. a kind of charging method for being exclusively used in charger described in claim 1, which comprises the following steps:
(1) SOC of the SOC and battery of real-time monitoring battery pack；
(2) when the SOC of battery is less than the first setting charging upper limit value, and the SOC of battery pack is greater than setting discharge threshold, control
System starting DC/DC module, makes battery pack charge a battery.
4. the charging method of charger according to claim 3, which is characterized in that the charging method further include:
Charge threshold is set when the SOC for monitoring battery pack is less than, and the SOC of battery sets charging upper limit value less than second,
Control the first AC/DC module of starting and the 2nd AC/DC module, make electric main charge to battery pack and battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467103.3A CN109586382A (en) | 2018-12-03 | 2018-12-03 | A kind of charger and its charging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811467103.3A CN109586382A (en) | 2018-12-03 | 2018-12-03 | A kind of charger and its charging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109586382A true CN109586382A (en) | 2019-04-05 |
Family
ID=65925927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811467103.3A Pending CN109586382A (en) | 2018-12-03 | 2018-12-03 | A kind of charger and its charging method |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491083A (en) * | 2020-11-12 | 2021-03-12 | 清华四川能源互联网研究院 | Micro-grid structure based on fuel cell and operation control method |
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