CN107546819A - A kind of adaptive charge control system of battery charging circuit and method - Google Patents
A kind of adaptive charge control system of battery charging circuit and method Download PDFInfo
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- CN107546819A CN107546819A CN201711013702.3A CN201711013702A CN107546819A CN 107546819 A CN107546819 A CN 107546819A CN 201711013702 A CN201711013702 A CN 201711013702A CN 107546819 A CN107546819 A CN 107546819A
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Abstract
The invention discloses a kind of adaptive charge control system of battery charging circuit and method, the control system includes output voltage sampling module, output current sampling module, compares control module, constant pressure loop control circuit, constant current loop control circuit, takes minimum value moding circuit and drive circuit.The present invention can solve the problem that space industry conventional charging circuit is only the technical barrier of single battery charging.
Description
Technical field
The present invention relates to Space power sources administrative skill field, more particularly to a kind of adaptive inductive charging control of battery charging circuit
System and method processed.
Background technology
As the core component of spacecraft, spacecraft energy resource system main task is to be carried during flight for spacecraft
For high-quality, highly reliable uninterruptable power, meet the power demand of various aerial missions and load.
Traditional space battery charging adjuster is charged just for the batteries of fixed voltage scope, it is impossible to
For the battery charging of different string numbers.With the development of space technology, the increase of load categories, battery tension grade is not
Together, higher demand is proposed to adaptive charging circuit and its control method.
At present, the conventional accumulator battery voltage grade in space includes 1 string lithium ion battery (3.0V~4.2V), 3 go here and there lithiums from
Sub- battery (9.0V~12.6V) and 7 string lithium ion batteries (21.0V~29.4V).How the storage of different voltage class is embodied as
The adaptive inductive charging of battery pack is a urgent problem to be solved.
The content of the invention
It is an object of the invention to provide a kind of adaptive charge control system of battery charging circuit and method, solves space flight
Field conventional charging circuit is only the technical barrier of single battery charging.
In order to realize the above object the present invention is achieved by the following technical solutions：
A kind of adaptive charge control system of battery charging circuit, is characterized in, comprising：
Output voltage sampling module, its input is connected to the output end of battery charging circuit, for according to battery
Charging voltage UoOne battery charging voltage sampled value U of corresponding outputo'；
Output current sampling module, its input is connected to the output end of battery charging circuit, for according to battery
Charging current IoOne battery charging current sampled value I of corresponding outputo'；
Compare control module, its input is connected to output voltage sampling module output end, for according to obtained electric power storage
The different interval ranges that pond charging voltage sampled value is located at, reference voltage corresponding to output；
Constant pressure loop control circuit, constant current loop control circuit, described constant pressure loop control circuit input are connected to ratio
Compared with control circuit output end and output voltage sampling module output end, described constant current ring control module input is connected to output
Current sample module output end；
Minimum value moding circuit, drive circuit are taken, described takes minimum value moding circuit input to be connected to constant pressure ring control electricity
Road and the output end of constant current loop control circuit, its output end connect battery charging circuit by drive module.
Described comparison control module includes：Some groups of comparison circuits, the switching tube for being connected to each comparison circuit
And take maximum value circuit；
The corresponding interval range that described comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe
Closure, the reference voltage of described switching tube is by taking maximum value circuit to export.
Described battery charging voltage sampled value Uo' less than a reference value U of constant pressure ring control modulerefWhen, described perseverance
Pressure ring control circuit works and by taking minimum value to export, and drive circuit controls battery charging circuit with constant current to electric power storage
Pond group charging.
Described battery charging voltage sampled value Uo' reach a reference value U of constant pressure ring control modulerefWhen, described perseverance
Flow loop control circuit work and by taking minimum value to export, drive circuit controls battery charging circuit with constant voltage to electric power storage
Pond group charging.
A kind of adaptive charge control method of battery charging circuit, is characterized in, described method includes：
According to battery charging voltage UoOne battery charging voltage sampled value U of corresponding outputo'；
According to battery charging current IoOne battery charging current sampled value I of corresponding outputo'；
The different interval ranges that battery charging voltage sampled value according to obtaining is located at, export corresponding with reference to electricity
Pressure；
Constant current charging mode or constant-voltage charge pattern are selected, to battery charging.
The different interval ranges that the battery charging voltage sampled value that described basis obtains is located at, export corresponding join
Voltage is examined to include：
The corresponding interval range that comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe closure,
The reference voltage of described switching tube is by taking maximum value circuit to export.
Charge mode corresponding to described selection, is included to battery charging：
Described battery charging current sampled value Io' reach the reference value I of constant current ring control modulerefWhen, described perseverance
Flow loop control circuit work and by taking minimum value to export, drive circuit controls battery charging circuit with constant current to electric power storage
Pond group charging.
Described battery charging voltage sampled value Uo' reach a reference value U of constant pressure ring control modulerefWhen, described perseverance
Pressure ring control circuit works and by taking minimum value to export, and drive circuit controls battery charging circuit with constant voltage to electric power storage
Pond group charging.
Described method also includes：
By the reference voltage for setting each switching tube so that the maximum charging voltage of batteries is limited in preset value.
The present invention compared with prior art, has advantages below：
Using the mode of hardware circuit, the adaptive inductive charging to different voltage battery groups is realized, being adapted to space should
With demand, solves the technical barrier that space industry conventional charging circuit is only single battery charging.
Brief description of the drawings
Fig. 1 is spacecraft battery charging circuit composition frame chart of the present invention；
Fig. 2 is a kind of circuit diagram of the adaptive charge control system of battery charging circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferable specific embodiment in detail, the present invention is further elaborated.
As shown in figure 1, spacecraft battery charging circuit is made up of power supply, battery charging circuit and batteries.
As shown in Fig. 2 a kind of adaptive charge control system of battery charging circuit, comprising：
Output voltage sampling module, its input is connected to the output end of battery charging circuit, for according to battery
Charging voltage UoOne battery charging voltage sampled value U of corresponding outputo', Uo'=Uo×k2
Output current sampling module, its input is connected to the output end of battery charging circuit, for according to battery
Charging current IoOne battery charging current sampled value I of corresponding outputo', Io'=Io×k1；
Compare control module, its input is connected to output voltage sampling module output end, for according to obtained electric power storage
The different interval ranges that pond charging voltage sampled value is located at, reference voltage corresponding to output；
Constant pressure loop control circuit, constant current loop control circuit, described constant pressure loop control circuit input are connected to ratio
Compared with control circuit output end and output voltage sampling module output end, described constant current ring control module input is connected to output
Current sample module output end；
Minimum value moding circuit, drive circuit are taken, described takes minimum value moding circuit input to be connected to constant pressure ring control electricity
Road and the output end of constant current loop control circuit, its output end connect battery charging circuit by drive module.
Described comparison control module includes：Some groups of comparison circuits, the switching tube for being connected to each comparison circuit
And take maximum value circuit；
The corresponding interval range that described comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe
Closure, the reference voltage of described switching tube is by taking maximum value circuit to export.
Described battery charging voltage sampled value Uo' reach a reference value U of constant pressure ring control modulerefWhen, described perseverance
Pressure ring control circuit is by PI adjustment works in linear amplification region, and PI operation values are by taking minimum value circuit output, drive circuit
Control battery charging circuit with constant voltage to battery charging；Described battery charging voltage sampled value Uo' be less than
The a reference value U of constant pressure ring control modulerefWhen, described constant pressure loop control circuit is by PI adjustment works in saturation region, PI computings
Value output high level.
Described battery charging current sampled value Io' reach the reference value I of constant current ring control modulerefWhen, described perseverance
Loop control circuit is flowed by PI adjustment works in linear amplification region, and PI operation values are by taking minimum value circuit output, drive circuit
Control battery charging circuit with constant current to battery charging；Described battery charging current sampled value Io' be less than
The reference value I of constant current ring control modulerefWhen, described constant current loop control circuit is by PI adjustment works in saturation region, PI computings
Value output high level.
A kind of adaptive charge control method of battery charging circuit, method include：
S1, according to one battery charging voltage sampled value U of the corresponding output of battery charging voltageo'；
S2, according to one battery charging current sampled value I of the corresponding output of battery charging currento'；
S3, the different interval ranges being located at according to obtained battery charging voltage sampled value, export corresponding refer to
Voltage；
S4, constant current charging mode or constant-voltage charge pattern are selected, to battery charging.
Described step S3 is included：
The corresponding interval range that comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe closure,
The reference voltage of described switching tube is by taking maximum value circuit to export.
In a particular embodiment, also included after step S3：
By the reference voltage for setting each switching tube so that the maximum charging voltage of batteries is limited in preset value,
Specially：
In the preferred embodiment of the invention, accumulator battery voltage grade includes 1 string lithium ion battery (3.0V~4.2V), and 3
String lithium ion battery (9.0V~12.6V) and 7 string lithium ion batteries (21.0V~29.4V), therefore, output voltage sampling electricity
Detect the current charging voltage of battery, battery tension certainty 3.0V~4.2V, 9.0V~12.6V and 21.0V~29.4V in road
In the range of.
When storage battery is pressed between 3.0V~4.2V, comparison circuit 1 exports high level, comparison circuit 2 and more electric
Road 3 exports low level, switching tube S1 closures, and switching tube S2 and S3 disconnect, reference voltage Vref1By taking maximum value circuit to export,
Now UrefEqual to Vref1, by setting rational Vref1Value so that the maximum charging voltage of battery is limited in 4.2V, realization pair
The pressure limiting charging of 1 string lithium ion battery.
When storage battery is pressed between 9.0V~12.6V, comparison circuit 2 exports high level, comparison circuit 1 and more electric
Road 3 exports low level, switching tube S2 closures, and switching tube S1 and S3 disconnect, reference voltage Vref2By taking maximum value circuit to export,
Now UrefEqual to Vref2, by setting rational Vref2Value so that the maximum charging voltage of battery is limited in 12.6V, realizes
Pressure limiting charging to 3 string lithium ion batteries.
When storage battery is pressed between 21.0V~29.4V, comparison circuit 3 exports high level, comparison circuit 1 and compares
Circuit 2 exports low level, switching tube S3 closures, and switching tube S1 and S2 disconnect, reference voltage Vref3By taking maximum value circuit defeated
Go out, now UrefEqual to Vref3, by setting rational Vref3Value so that the maximum charging voltage of battery is limited in 29.4V, real
The now pressure limiting charging to 7 string lithium ion batteries.
Described step S4 is included：
When selection constant current charging mode, i.e. described battery charging voltage sampled value Uo' it is less than constant pressure ring control module
A reference value UrefWhen, batteries are underfill electricity condition, and constant pressure loop control circuit is operated in saturation region, output high level, permanent
Stream loop control circuit is operated in linear amplification region, and constant current loop control circuit works and by taking minimum value to export, drive circuit control
Battery charging circuit processed is with constant current to battery charging；Have：
Io'=Iref
Io=Iref÷k1
In formula, IrefIt is a reference value of constant current loop control circuit, k1It is that battery charging current samples ratio, Io' it is battery
Charge current sample value.
As selection constant-voltage charge pattern, described battery charging voltage sampled value Uo' reach constant pressure ring control module
A reference value UrefWhen, batteries are to work full of electricity condition, described constant current loop control circuit and by taking minimum value to export,
Drive circuit controls battery charging circuit with constant voltage to battery charging；Have：
Uo'=Uref
Uo=Uref÷k2
In formula, UrefIt is a reference value of constant pressure loop control circuit, k2It is that battery tension samples ratio, Uo' it is battery tension
Sampled value.
The present invention is by adaptively changing constant-voltage control circuit reference voltage value Uref, so as to change batteries most
Big charging voltage.
The adaptive charging control circuit of battery charging circuit proposed by the present invention and method, detect the electricity of batteries
Pressure, the maximum charging voltage of Auto-matching batteries.When accumulator battery voltage scope is in 3.0V~4.2V, automatic setting charging
Upper voltage limit value is 4.2V；When accumulator battery voltage scope is in 9.0V~12.6V, it is automatic set charging voltage higher limit as
12.6V；When accumulator battery voltage scope is in 21.0V~29.4V, charging voltage higher limit is set as 29.4V automatically, is realized to 1
String, 3 strings, the adaptive charge control of 7 string batteries.
In summary, a kind of adaptive charge control system of battery charging circuit of the present invention and method, solve space flight neck
Domain conventional charging circuit is only the technical barrier of single battery charging.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (8)
1. a kind of adaptive charge control system of battery charging circuit, it is characterised in that include：
Output voltage sampling module, its input are connected to the output end of battery charging circuit, for being charged according to battery
Voltage UoOne battery charging voltage sampled value U of corresponding outputo'；
Output current sampling module, its input are connected to the output end of battery charging circuit, for being charged according to battery
Electric current IoOne battery charging current sampled value I of corresponding outputo'；
Compare control module, its input is connected to output voltage sampling module output end, for being filled according to obtained battery
The different interval ranges that piezoelectric voltage sampled value is located at, reference voltage corresponding to output；
Constant pressure loop control circuit, constant current loop control circuit, described constant pressure loop control circuit input, which is connected to, compares control
Circuit output end and output voltage sampling module output end processed, described constant current ring control module input are connected to output current
Sampling module output end；
Take minimum value moding circuit, drive circuit, it is described take minimum value moding circuit input be connected to constant pressure loop control circuit and
The output end of constant current loop control circuit, its output end connect battery charging circuit by drive module.
2. the adaptive charge control system of battery charging circuit as claimed in claim 1, it is characterised in that described comparison
Control module includes：Some groups of comparison circuits, it is connected to the switching tube of each comparison circuit and takes maximum value circuit；
The corresponding interval range that described comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe close
Close, the reference voltage of described switching tube is by taking maximum value circuit to export.
3. the adaptive charge control system of battery charging circuit as claimed in claim 2, it is characterised in that described electric power storage
Pond charge current sample value Io' reach the reference value I of constant current ring control modulerefWhen, described constant current loop control circuit works simultaneously
By taking minimum value to export, drive circuit controls battery charging circuit with constant current to battery charging.
4. the adaptive charge control system of battery charging circuit as claimed in claim 2, it is characterised in that described electric power storage
Pond charging voltage sampled value Uo' reach a reference value U of constant pressure ring control modulerefWhen, described constant pressure loop control circuit works simultaneously
By taking minimum value to export, drive circuit controls battery charging circuit with constant voltage to battery charging.
5. a kind of adaptive charge control method of battery charging circuit, it is characterised in that described method includes：
According to one battery charging voltage sampled value U of the corresponding output of battery charging voltageo'；
According to one battery charging current sampled value I of the corresponding output of battery charging currento'；
The different interval ranges that battery charging voltage sampled value according to obtaining is located at, reference voltage corresponding to output；
Constant current charging mode or constant-voltage charge pattern are selected, to battery charging.
6. the adaptive charge control method of battery charging circuit as claimed in claim 5, it is characterised in that described basis
The different interval ranges that obtained battery charging voltage sampled value is located at, reference voltage corresponding to output include：
The corresponding interval range that comparison circuit is located at according to battery charging voltage sampled value, controlling switch pipe closure are described
Switching tube reference voltage by taking maximum value circuit to export.
7. the adaptive charge control method of battery charging circuit as claimed in claim 5, it is characterised in that described selection
Corresponding charge mode, is included to battery charging：
Described battery charging current sampled value Io' reach the reference value I of constant current ring control modulerefWhen, described constant current ring
Control circuit works and by taking minimum value to export, and drive circuit controls battery charging circuit with constant current to batteries
Charging；
Described battery charging voltage sampled value Uo' reach a reference value U of constant pressure ring control modulerefWhen, described constant pressure ring
Control circuit works and by taking minimum value to export, and drive circuit controls battery charging circuit with constant voltage to batteries
Charging.
8. the adaptive charge control method of battery charging circuit as claimed in claim 6, it is characterised in that described method
Also include：
By the reference voltage for setting each switching tube so that the maximum charging voltage of batteries is limited in preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711013702.3A CN107546819A (en) | 2017-10-25 | 2017-10-25 | A kind of adaptive charge control system of battery charging circuit and method |
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| CN201711013702.3A CN107546819A (en) | 2017-10-25 | 2017-10-25 | A kind of adaptive charge control system of battery charging circuit and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057241A1 (en) * | 2019-09-25 | 2021-04-01 | 上海类比半导体技术有限公司 | Minimum output selection circuit and battery charging and discharging circuit |
-
2017
- 2017-10-25 CN CN201711013702.3A patent/CN107546819A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 符进升: "一种充电器的恒流/恒压自动转换控制电路", 《汽车电器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021057241A1 (en) * | 2019-09-25 | 2021-04-01 | 上海类比半导体技术有限公司 | Minimum output selection circuit and battery charging and discharging circuit |
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Application publication date: 20180105 |