CN109004699A - A kind of vehicle-mounted charge dynamic adjusting system and its adjusting method - Google Patents
A kind of vehicle-mounted charge dynamic adjusting system and its adjusting method Download PDFInfo
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- CN109004699A CN109004699A CN201810674110.4A CN201810674110A CN109004699A CN 109004699 A CN109004699 A CN 109004699A CN 201810674110 A CN201810674110 A CN 201810674110A CN 109004699 A CN109004699 A CN 109004699A
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Classifications
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- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
-
- 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
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
-
- 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
Abstract
The present invention relates to vehicle-mounted charge method and technology field more particularly to a kind of vehicle-mounted charge dynamic adjusting systems and its adjusting method, including DCDC module and two charging modules；The input pin of the DCDC module accesses automobile batteries, and output pin is respectively connected to two charging modules, for the 14V voltage of the automobile batteries to be switched to 5V voltage, and provides 5V operating voltage for two charging modules；Two charging modules provide CDP and SDP charging communications protocol respectively, and realize externally charging by HUB charge port.Goal of the invention of the invention is to provide a kind of vehicle-mounted charge dynamic adjusting system and its adjusting method, solves existing vehicle-mounted USB port using technical solution provided by the invention while the technical issues of the fever generated when CDP being supported to charge leads to HUB charging failure.
Description
Technical field
The present invention relates to vehicle-mounted charge method and technology field more particularly to a kind of vehicle-mounted charge dynamic adjusting systems and its tune
Section method.
Background technique
It can be generally set in current automobile market, at automobile center console there are two USB port, one is special charging mouth
(Charging Downstream Port), one is standard down pin mouth (Standard Downstream Port).
If user vehicle is needed in the process of moving for charging of mobile devices, user need to find corresponding charge port into
Row quick charge, otherwise charging rate is slow, and this operation mode convenience is low.Especially when user is in nighttime driving automobile,
Such operation will increase the risk in driving process.
And since two charge ports of automobile export electric current always as 2A, it is unable to satisfy two charge ports and all supports CDP
The demand of (1.5A) mode.If two charge ports of HUB export the electric current of 1.5A simultaneously, i.e. two mouths are filled using high current simultaneously
Electricity calculates: dissipated power Pd=pin-Pout=(3A*5V)/15%-3A*5V=according to switch power efficiency 85%
2.65W can generate amount of heat, and two charge ports are generally set up on HUB, and HUB dimensional space is limited, and heat dissipation performance is poor, electricity
Source IC temperature is higher, easily leads to HUB charging failure, and be unable to satisfy that vehicle-mounted product works normally under 85 DEG C of environment temperatures wants
It asks.
Summary of the invention
Goal of the invention of the invention is to provide a kind of vehicle-mounted charge dynamic adjusting system and its adjusting method, using this hair
The technical solution of bright offer solves existing vehicle-mounted USB port while the fever generated when CDP being supported to charge leads to HUB charging failure
The technical issues of.
In order to solve the above-mentioned technical problem, one aspect of the present invention provides a kind of vehicle-mounted charge dynamic adjusting system, including
DCDC module and two charging modules；
The input pin of the DCDC module accesses automobile batteries, and output pin is respectively connected to two charging modules,
For the 14V voltage of the automobile batteries to be switched to 5V voltage, and 5V operating voltage is provided for two charging modules；
Two charging modules provide CDP and SDP charging communications protocol respectively, and are realized externally by HUB charge port
Charging.
Preferably, two charging modules are provided with IN pin, CTL1 pin, CTL2 pin and STATUS pin；
The CTL1 pin and CTL2 pin are that two charge modes of the charging module control pin, and the STATUS pin is institute
State the status register pin of charging module；
The output pin of the DCDC module is respectively connected to the IN pin of two charging modules；
The CTL1 pin of two charging modules pulls up the output pin for accessing the DCDC module, CTL2 pin point
The STATUS pin of another charging module is not accessed, and is drawn by the output that pull-up resistor accesses the DCDC module
Foot.
Preferably, two charging modules further respectively have OUT pin, the DM_ of access external USB TYPE mother's A mouth
IN pin and DP_IN pin further respectively have the ILIM_LO pin being grounded by pull down resistor；The charging module passes through institute
State the output voltage of OUT pin described in the dynamic regulation of the information transmission of CTL1 pin, CTL2 pin and STATUS pin.
Preferably, the resistance value of the pull-up resistor is 100k Ω.
Based on above-mentioned vehicle-mounted charge dynamic adjusting system, another aspect of the present invention also provides a kind of vehicle-mounted charge dynamic regulation
Method, the charge mode of the charging module include SDP mode and CDP mode；The following steps are included:
Under S100, standby mode, two charging modules are light condition, and charge mode is each configured to CDP mode；
After S200, mobile device are inserted in one of external USB mother's TYPEA mouth of the charging module, the load is detected
Whether the output electric current of charging module is greater than the set value；
If S300, the output electric current for loading charging module are greater than the set value, filling for another unloaded charging module is adjusted
Power mode is SDP mode；
If S400, the output electric current for loading charging module are less than setting value, filling for another unloaded charging module is kept
Power mode is CDP mode.
In the step s 100, under standby mode, the charge mode of two charging modules is each configured to CDP mode；It is excellent
Choosing, further include that the CTL1 pin of two charging modules and the level state of CTL2 pin are 1, and enabled STATUS draws
The detection function of foot.
In step s 200, after mobile device is inserted in one of external USB TYPE mother's A mouth of the charging module,
Whether the output electric current for detecting the load charging module is greater than the set value；Preferably, the STATUS pin of the load charging module
Whether the charging current of detection ILIM_LO pin is greater than the set value.
Preferably, the numerical relation between the setting value and corresponding pull down resistor is inversely proportional, and product is 5V.
In step S300, if the output electric current of load charging module is greater than the set value, another zero load charging is adjusted
The charge mode of module is SDP mode；Preferably, further include load charging module STATUS pin output 0 to zero load charge
The CTL2 pin of module；CTL1, CTL2 configuration of unloaded charging module are respectively 1 and 0, and charge mode is by CDP pattern configurations
The detection function of SDP mode, STATUS pin is closed, and output high level is kept.
In step S400, if the output electric current of load charging module is less than setting value, another zero load charging is kept
The charge mode of module is CDP mode；Preferably, further include load charging module STATUS pin output 1 to zero load charge
The CTL2 pin of module；CTL1, CTL2 configuration of unloaded charging module are respectively 1 and 1, and charge mode remains CDP mode.
Technical solution provided by the invention is transmitted by the status pin of charging module and the information of charge control pin
The charge mode of dynamic regulation charging module, effectively solves two charge ports of vehicle-mounted HUB, any one mouth support CDP charging and
The excessively high problem for leading to failure of HUB temperature.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, the present invention will be implemented below
Attached drawing needed in the description of example or the prior art is briefly described.It should be evident that the accompanying drawings in the following description
Only a part of the embodiments of the present invention, for those of ordinary skill in the art, in not making the creative labor property
Under the premise of, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is vehicle-mounted charge of embodiment of the present invention dynamic adjusting system electrical block diagram；
Fig. 2 is vehicle-mounted charge of embodiment of the present invention dynamic regulating method flow diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is 2A since two charge ports of automobile always export electric current, if two charge ports export the electric current of 1.5A simultaneously, can produces
Raw amount of heat easily leads to HUB charging failure, is unable to satisfy the requirement that vehicle-mounted product works normally under 85 DEG C of environment temperatures.
Referring to Figure 1, in order to solve the above-mentioned technical problem, on the one hand the present embodiment provides a kind of vehicle-mounted charge dynamic regulation
System, including DCDC module and two charging modules.
Wherein, the input pin of DCDC module accesses automobile batteries, and output pin is respectively connected to two charging modules, is used for
The 14V voltage of automobile batteries is switched into 5V voltage, and provides 5V operating voltage for two charging modules.Two charging module difference
CDP and SDP charging communications protocol is provided, and externally charging is realized by HUB charge port.
Before illustrating the embodiment of the present invention, above-mentioned CDP and SDP charging communications protocol is described briefly at this, so as to
In understanding technical solution provided in this embodiment.USBBC1.2 standard promulgation referred to directly closing just in 2010
The charging of portable device battery becomes the key criterion established through the correct way that USB port is battery charging.BC1.2 specification
Briefly define three kinds of different types of USB ports and two kinds of key objects, three kinds of USBBC1.2 port types be respectively SDP,
DCP and CDP.
Wherein, SDP is standard down port, identical as the port of USB2.0 specification definition, USB data line D+ and D- points
It is not grounded by 15k Ω.When hang-up, maximum load current 2.5mA；It is 100mA under connection and non-suspended state, can configures
Electric current is 500mA (maximum).
Wherein, CDP is charging downlink port, and this port can provide up to 1.5A electric current, also support completely compatible
The data of USB2.0 are transmitted.15k Ω pull down resistor necessary to there is D+ and D- to communicate for port, it may have charger detects rank
The internal circuit of section switching.
In conjunction with above-mentioned charge protocol, vehicle-mounted charge dynamic adjusting system provided in this embodiment, two charging modules are all provided with
It is equipped with IN pin, CTL1 pin, CTL2 pin and STATUS pin.Wherein CTL1 pin and CTL2 pin are the two of charging module
A charge mode controls pin, and STATUS pin is the status register pin of charging module.Above-mentioned pin is as vehicle-mounted charge
The charging current of dynamic adjusting system detects and switching circuit pin.
Wherein the output pin of DCDC module is respectively connected to the IN pin of two charging modules；The CTL1 of two charging modules
Pin pulls up the output pin of access DCDC module, and CTL2 pin is respectively connected to the STATUS pin of another charging module,
And the output pin of DCDC module is accessed by pull-up resistor.Wherein the resistance value of pull-up resistor is 100k Ω.Foregoing circuit connects
The charging current of vehicle-mounted charge dynamic adjusting system that binding structure is then used as detects and switching circuit.
Two charging modules further respectively have OUT pin, DM_IN pin and the DP_IN of access external USB mother TYPEA mouth
Pin further respectively has the ILIM_LO pin being grounded by pull down resistor；Charging module by CTL1 pin, CTL2 pin and
The output voltage of the dynamic regulation OUT pin of the information transmission of STATUS pin.
Fig. 2 is referred to, above-mentioned vehicle-mounted charge dynamic adjusting system is based on, on the other hand the embodiment of the present invention also provides one kind
Vehicle-mounted charge dynamic regulating method, the charge mode of charging module include SDP mode and CDP mode；The following steps are included:
Under S100, standby mode, two charging modules are light condition, and charge mode is each configured to CDP mode.
Wherein, two charging modules are insertion mobile device, are in light condition, and two charging modules can be described as sky
Charging module is carried, after being inserted into mobile device, corresponding charging module then can be described as load charging module.
In this step, further include that the CTL1 pin of two charging modules and the level state of CTL2 pin are 1, make
The detection function of energy STATUS pin.
After S200, mobile device are inserted in one of external USB mother's TYPEA mouth of charging module, load charging is detected
Whether the output electric current of module is greater than the set value.
In this step, the load charging module by STATUS pin detect ILIM_LO pin charging current whether
It is greater than the set value.
Wherein the numerical relation between setting value and corresponding pull down resistor is inversely proportional, and product is 5V, table specific as follows
It is shown:
If S300, the output electric current for loading charging module are greater than the set value, filling for another unloaded charging module is adjusted
Power mode is SDP mode.
In this step, if the output electric current of load charging module is greater than the set value, it can determine that and be inserted into load charging
The mobile device of module supports cdp protocol, carries out large current charge after mobile device insertion.Load the output electric current of charging module
It is greater than the set value, loads the STATUS pin output 0 of charging module to the CTL2 pin of unloaded charging module；Unloaded charging module
CTL1, CTL2 configuration be respectively 1 and 0, charge mode by CDP pattern configurations be SDP mode, the detection function of STATUS pin
It closes, keeps output high level.CTL1 pin and the specific control mode of CTL2 pin are as shown in the table:
| CTL1 | CTL2 | Charge mode | STATUS detection |
| 1 | 0 | SDP | OFF |
| 1 | 1 | CDP | ON |
When the insertion of an other mobile device is configured to the unloaded charging module of SDP mode, normalized current can only be carried out
Charge (SDP), thus guarantee the operating temperature of HUB in normal interval, not easy burn-out.
If S400, the output electric current for loading charging module are less than setting value, filling for another unloaded charging module is kept
Power mode is CDP mode.
In this step, if the output electric current of load charging module is less than setting value, it can determine that and be inserted into load charging
The mobile device non-CDP-capable agreement of module carries out normalized current charging after mobile device insertion.Load the output of charging module
Electric current is less than setting value, loads the STATUS pin output 1 of charging module to the CTL2 pin of unloaded charging module；Zero load charging
CTL1, CTL2 configuration of module are respectively 1 and 1, and charge mode remains CDP mode.
When the insertion of an other mobile device remains the unloaded charging module of CDP mode, if mobile device supports CDP
Agreement then carries out standard large current charge；If mobile device non-CDP-capable agreement, carries out normalized current charging.
Technical solution provided in an embodiment of the present invention passes through the status pin of charging module and the information of charge control pin
The charge mode of the dynamic regulation charging module of transmission, effectively solves two charge ports of vehicle-mounted HUB, any one mouth supports CDP
Charging and the excessively high problem for leading to failure of HUB temperature.
Embodiments described above does not constitute the restriction to the technical solution protection scope.It is any in above-mentioned implementation
Made modifications, equivalent substitutions and improvements etc., should be included in the protection model of the technical solution within the spirit and principle of mode
Within enclosing.
Claims (10)
1. a kind of vehicle-mounted charge dynamic adjusting system, it is characterised in that: including DCDC module and two charging modules；
The input pin of the DCDC module accesses automobile batteries, and output pin is respectively connected to two charging modules, is used for
The 14V voltage of the automobile batteries is switched into 5V voltage, and provides 5V operating voltage for two charging modules；
Two charging modules provide CDP and SDP charging communications protocol respectively, and realize externally charging by HUB charge port.
2. vehicle-mounted charge dynamic adjusting system according to claim 1, it is characterised in that: two charging modules are all provided with
It is equipped with IN pin, CTL1 pin, CTL2 pin and STATUS pin；The CTL1 pin and CTL2 pin are the charging module
Two charge modes control pin, the STATUS pin be the charging module status register pin；
The output pin of the DCDC module is respectively connected to the IN pin of two charging modules；
The CTL1 pin of two charging modules pulls up the output pin for accessing the DCDC module, and CTL2 pin connects respectively
Enter the STATUS pin of another charging module, and accesses the output pin of the DCDC module by pull-up resistor.
3. vehicle-mounted charge dynamic adjusting system according to claim 2, it is characterised in that: two charging modules also divide
The OUT pin, DM_IN pin and DP_IN pin that external USB TYPE mother's A mouth She You not accessed, further respectively have under
The ILIM_LO pin of pull-up resistor ground connection；The charging module passes through the CTL1 pin, CTL2 pin and STATUS pin
The output voltage of OUT pin described in the dynamic regulation of information transmission.
4. vehicle-mounted charge dynamic debugging system according to claim 3, it is characterised in that: the resistance value of the pull-up resistor
For 100k Ω.
5. a kind of adjusting method based on vehicle-mounted charge dynamic adjusting system as claimed in claim 4, it is characterised in that: described to fill
The charge mode of electric module includes SDP mode and CDP mode；The following steps are included:
Under S100, standby mode, two charging modules are light condition, and charge mode is each configured to CDP mode；
After S200, mobile device are inserted in one of external USB TYPE mother's A mouth of the charging module, detect the load and fill
Whether the output electric current of electric module is greater than the set value；
If S300, the output electric current for loading charging module are greater than the set value, the charging mould of another unloaded charging module is adjusted
Formula is SDP mode；
If S400, the output electric current for loading charging module are less than setting value, the charging mould of another unloaded charging module is kept
Formula is CDP mode.
6. adjusting method according to claim 5, in the step s 100, under standby mode, two charging modules
Charge mode is each configured to CDP mode；It is characterized by also including,
The CTL1 pin of two charging modules and the level state of CTL2 pin are 1, enable the detection of STATUS pin
Function.
7. adjusting method according to claim 6, in step s 200, mobile device are inserted in one of the charging mould
After external USB TYPE mother's A mouth of block, whether the output electric current for detecting the load charging module is greater than the set value；Its feature exists
In: whether the charging current of the STATUS pin detection ILIM_LO pin of the load charging module is greater than the set value.
8. adjusting method according to claim 7, it is characterised in that: between the setting value and corresponding pull down resistor
Numerical relation is inversely proportional, and product is 5V.
9. adjusting method according to claim 8 is set in step S300 if the output electric current of load charging module is greater than
Definite value, then the charge mode for adjusting another unloaded charging module is SDP mode；It is characterized by also including,
The STATUS pin output 0 of charging module is loaded to the CTL2 pin of unloaded charging module；The CTL1 of unloaded charging module,
CTL2 configuration is respectively 1 and 0, and charge mode is SDP mode by CDP pattern configurations, and the detection function of STATUS pin is closed, protected
Hold output high level.
10. adjusting method according to claim 9, in step S400, if the output electric current of load charging module is less than
Setting value, then keeping the charge mode of another unloaded charging module is CDP mode；It is characterized by also including,
The STATUS pin output 1 of charging module is loaded to the CTL2 pin of unloaded charging module；The CTL1 of unloaded charging module,
CTL2 configuration is respectively 1 and 1, and charge mode remains CDP mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674110.4A CN109004699B (en) | 2018-06-27 | 2018-06-27 | Vehicle-mounted charging dynamic adjusting system and adjusting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810674110.4A CN109004699B (en) | 2018-06-27 | 2018-06-27 | Vehicle-mounted charging dynamic adjusting system and adjusting method thereof |
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| Publication Number | Publication Date |
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| CN109004699B CN109004699B (en) | 2020-12-01 |
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Cited By (1)
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| CN109004699B (en) | 2020-12-01 |
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