CN206321769U - A kind of lithium cell charging detection means - Google Patents
A kind of lithium cell charging detection means Download PDFInfo
- Publication number
- CN206321769U CN206321769U CN201621300732.3U CN201621300732U CN206321769U CN 206321769 U CN206321769 U CN 206321769U CN 201621300732 U CN201621300732 U CN 201621300732U CN 206321769 U CN206321769 U CN 206321769U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- processor
- supply loop
- lithium battery
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of lithium cell charging detection means, including the power supply loop to the lithium battery power supply and the current detection circuit being arranged between the power supply loop and lithium battery, the current detection circuit includes electric capacity sampling module, clock controller, high-speed comparator and processor, the electric capacity sampling module is made up of sense resistance and amplifier, the electric capacity sampling module is coupled with the high-speed comparator, and the processor carries out the resistance value that Digital Logic control changes the sense resistance；The clock controller is connected with the processor, controls the break-make of the power supply loop.Current detection circuit is provided between lithium battery and power supply loop in the utility model, excessively stream, short circuit current flow can be protected, can be used for accurately calculating the relevant parameters such as battery impedance, electricity, it is ensured that the charging safety of lithium battery.
Description
Technical field
The utility model is related to a kind of battery current detection means, and in particular to a kind of lithium cell charging detection means.
Background technology
Current portable set has penetrated into the various aspects of routine work life, mobile phone, panel computer, digital photographing
Machine, various portable equipments etc..And these portable sets typically using environmental protection, high power capacity, small size, memory-less effect,
The good lithium battery power supply of long lifespan, high temperature performance.Due to most of lithium battery charger because its is cheap, circuit design phase
To simple, thus when circuit occurs abnormal, the lithium battery charged can be caused damage.Therefore, not only it is unable to reach most
Excellent charging effect, but also the service life of lithium battery can be shortened.
The content of the invention
Goal of the invention：The utility model purpose is in view of the shortcomings of the prior art can be to excessively stream, short circuit electricity there is provided one kind
Flow the lithium cell charging detection means protected.
Technical scheme：Lithium cell charging detection means described in the utility model, including to the power supply of the lithium battery power supply
Loop and the current detection circuit being arranged between the power supply loop and lithium battery, the current detection circuit include electric capacity
Sampling module, clock controller, high-speed comparator and processor, the electric capacity sampling module is by sense resistance and amplifier group
Into the sense resistance is amplified, the electric capacity to current sample between the power supply loop both positive and negative polarity by the amplifier
Sampling module is coupled with the high-speed comparator, and the sampled data that the high-speed comparator receives the electric capacity sampling module is gone forward side by side
After row quantifies, the processor is transferred to, the processor carries out the resistance value that Digital Logic control changes the sense resistance；
The clock controller is connected with the processor, controls the break-make of the power supply loop.
Further preferably technical scheme is the utility model, and voltage is additionally provided between the power supply loop and lithium battery
Detection module, the voltage detection module is made up of three-terminal voltage-stabilizing circuit, bleeder circuit and comparison circuit, the comparison circuit by
Some voltage comparators composition, the positive pole output of power supply loop voltage is by three-terminal voltage-stabilizing circuit partial pressure and passes through the bleeder circuit
Into the comparison circuit, the comparison circuit detects the voltage input and current between both positive and negative polarity the processor of circuit, by institute
State the break-make that processor controls the power supply loop by clock controller.
Preferably, the power supply loop includes charging circuit, discharge circuit and charge-discharge control circuit, the charging electricity
The both positive and negative polarity of road, the two poles of the earth of discharge circuit respectively with the lithium battery is connected, and is filled described in the charge-discharge control circuit control
The break-make of circuit, discharge circuit, the charge-discharge control circuit is connected with the clock controller, receives the clock control
The control signal that device is sent.
Preferably, the power supply loop also includes battery handover module, and the battery handover module is by several switching electricity
Road array composition, each switching circuit array is by drive circuit and relay group into each switching circuit array
A battery cell with the lithium battery is corresponding, and the processor of the battery handover module and the current detection circuit connects
Connect.
Beneficial effect：（1）Current detection circuit is provided between lithium battery and power supply loop in the utility model, is passed through
The sense resistance of current detection circuit is sampled to electric current, and uses clock switch, electric capacity operational amplifier and high speed
Comparator, realizes the conversion from analog signal to data signal, and the computing of precision current amount is carried out within a processor, can be to mistake
Stream, short circuit current flow are protected, and can be used for accurately calculating the relevant parameters such as battery impedance, electricity, it is ensured that the charging of lithium battery
Safety；
（2）Voltage detection module is also provided with the utility model, the level exported by the comparator of voltage detection module
State, can judge the charge condition and laying state of present battery.These status signals are as detection signal, then send back to
Single-chip microcomputer, is worked, and battery status is indicated by Single-chip Controlling charge-discharge circuit.
（3）Power supply loop of the present utility model has battery handover module, is touched using that can change the double of two paths of signals simultaneously
Electrical relay, realization is switched over simultaneously to charging and discharging circuit and battery status measure loop, utilizes the interruption control of external interrupt
Function processed, and detection judgement is carried out to two switching key states by single-chip microcomputer, while " moving up " and " moving down " button is utilized,
Realize the manual switching between battery cell.
Brief description of the drawings
Fig. 1 is the system block diagram of charging detection device described in the utility model.
Embodiment
Technical solutions of the utility model are described in detail below by accompanying drawing, but protection domain of the present utility model
It is not limited to the embodiment.
Embodiment：A kind of lithium cell charging detection means, including to lithium battery power supply power supply loop and be arranged on confession
Current detection circuit and voltage detection module between electric loop and lithium battery.
Power loop include charging circuit, discharge circuit, charge-discharge control circuit and battery handover module, charging circuit,
The two poles of the earth of discharge circuit are respectively connected with the both positive and negative polarity of lithium battery, charge-discharge control circuit control charging circuit, discharge circuit
Break-make, charge-discharge control circuit is connected with current detection circuit, receives the control of current detection circuit；Battery handover module by
Several switching circuit arrays are constituted, and each switching circuit array is by drive circuit and relay group into each switching circuit
Array is corresponding with a battery cell of lithium battery, the processor connection of battery handover module and current detection circuit, by electricity
Current detection circuit Based Intelligent Control.
Current detection circuit includes electric capacity sampling module 1, clock controller 2, high-speed comparator 3 and processor 4, and electric capacity is adopted
Egf block 1 is made up of sense resistance 11 and amplifier 12, current sample between 11 pairs of power supply loop both positive and negative polarities of sense resistance, and is led to
Cross amplifier 12 to amplify, electric capacity sampling module 1 is coupled with high-speed comparator 3, high-speed comparator 3 receives electric capacity sampling module 1
Sampled data and after being quantified, is transferred to processor 4, processor 4 carries out the resistance that Digital Logic control changes sense resistance
Value；Clock controller 2 is connected with processor 4, the break-make of control power supply loop.
Voltage detection module is made up of three-terminal voltage-stabilizing circuit, bleeder circuit and comparison circuit, and comparison circuit is by some voltages
Comparator is constituted, and the voltage of power supply loop positive pole output by three-terminal voltage-stabilizing circuit partial pressure and enters more electric by bleeder circuit
Road, comparison circuit detects the voltage input and current between both positive and negative polarity the processor of circuit, and clock controller is passed through by processor
The break-make of control power supply loop.
As described above, although the utility model has been represented and described with reference to specific preferred embodiment, it must not
It is construed to the limitation to the utility model itself.The spirit and scope of the present utility model that appended claims are defined are not being departed from
Under the premise of, can various changes can be made in the form and details to it.
Claims (4)
1. a kind of lithium cell charging detection means, including to the lithium battery power supply power supply loop and be arranged on the power supply
Current detection circuit between loop and lithium battery, it is characterised in that the current detection circuit include electric capacity sampling module, when
Clock controller, high-speed comparator and processor, the electric capacity sampling module are made up of sense resistance and amplifier, the sensitive electricity
Resistance is amplified, the electric capacity sampling module and institute to current sample between the power supply loop both positive and negative polarity by the amplifier
High-speed comparator coupling is stated, after the high-speed comparator receives the sampled data of the electric capacity sampling module and quantified, is passed
The processor is defeated by, the processor carries out the resistance value that Digital Logic control changes the sense resistance；Clock when described
Device processed is connected with the processor, controls the break-make of the power supply loop.
2. lithium cell charging detection means according to claim 1, it is characterised in that the power supply loop and lithium battery it
Between be additionally provided with voltage detection module, the voltage detection module is made up of three-terminal voltage-stabilizing circuit, bleeder circuit and comparison circuit,
The comparison circuit is made up of some voltage comparators, power supply loop positive pole output voltage is by three-terminal voltage-stabilizing circuit partial pressure and leads to
The bleeder circuit is crossed into the comparison circuit, the voltage input and current between both positive and negative polarity is detected circuit by the comparison circuit
Processor, by the processor by clock controller control it is described power supply loop break-make.
3. lithium cell charging detection means according to claim 1, it is characterised in that the power supply loop includes charging electricity
Road, discharge circuit and charge-discharge control circuit, the charging circuit, discharge circuit the two poles of the earth respectively with the lithium battery just
Negative pole is connected, and the charge-discharge control circuit controls the charging circuit, the break-make of discharge circuit, the charge-discharge control circuit
It is connected with the clock controller, receives the control signal that the clock controller is sent.
4. lithium cell charging detection means according to claim 3, it is characterised in that the power supply loop also includes battery
Handover module, the battery handover module is made up of several switching circuit arrays, and each switching circuit array is by drive
Dynamic circuit and relay group are into each switching circuit array is corresponding with a battery cell of the lithium battery, described
Battery handover module is connected with the processor of the current detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300732.3U CN206321769U (en) | 2016-11-30 | 2016-11-30 | A kind of lithium cell charging detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621300732.3U CN206321769U (en) | 2016-11-30 | 2016-11-30 | A kind of lithium cell charging detection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206321769U true CN206321769U (en) | 2017-07-11 |
Family
ID=59264939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621300732.3U Expired - Fee Related CN206321769U (en) | 2016-11-30 | 2016-11-30 | A kind of lithium cell charging detection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206321769U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594004A (en) * | 2018-07-09 | 2018-09-28 | 珠海市微半导体有限公司 | bidirectional current detection circuit and detection method |
-
2016
- 2016-11-30 CN CN201621300732.3U patent/CN206321769U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108594004A (en) * | 2018-07-09 | 2018-09-28 | 珠海市微半导体有限公司 | bidirectional current detection circuit and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104348234B (en) | A kind of battery management system with active equalization system | |
| CN102097844A (en) | Intelligent battery management system | |
| CN201789318U (en) | Mobile phone power supply device with leather case battery for power supply | |
| CN205753523U (en) | A kind of energy-storage battery group charge and discharge control and detection device | |
| CN104617616B (en) | A kind of portable power source test charge-discharge control circuit and portable power source test device | |
| CN104300606A (en) | Multi-string battery protection system | |
| CN204144974U (en) | The protection of lithium battery and inversion system | |
| WO2014187415A1 (en) | Charging cable and charging system | |
| CN105356421A (en) | Charge and discharge protective circuit for lithium battery pack | |
| CN201528214U (en) | Intelligent pulse charging circuit | |
| CN206321769U (en) | A kind of lithium cell charging detection means | |
| CN206023249U (en) | A kind of Intelligent controller for recharging/discharging for accumulator of electric car | |
| CN204925232U (en) | Accurate detection circuitry of lithium cell group monomer voltage | |
| CN206498211U (en) | A kind of battery control circuit | |
| CN206894270U (en) | Battery management system | |
| CN203278384U (en) | Power supply system of vehicle-mounted video terminal | |
| CN205407324U (en) | Digital lithium battery measurement device | |
| CN204967367U (en) | Notebook computer battery protection circuit | |
| CN205070409U (en) | Switch transistor pressure drop holding circuit and applied this pressure drop holding circuit's lithium battery protection circuit | |
| CN202872419U (en) | LED emergency lamp battery management device | |
| CN102832674B (en) | Charging/discharging protection circuit of lithium battery | |
| CN202888786U (en) | Large power charger output reverse polarity protection circuit | |
| CN204651977U (en) | A kind of ups system of intelligent management battery | |
| CN204761016U (en) | New energy automobile power battery's protection circuit | |
| CN203690438U (en) | Intelligent protection system for accumulator overcharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20171130 |