CN2598158Y - Lithium primary battery pack with residual capacity display device - Google Patents
Lithium primary battery pack with residual capacity display device Download PDFInfo
- Publication number
- CN2598158Y CN2598158Y CNU032330405U CN03233040U CN2598158Y CN 2598158 Y CN2598158 Y CN 2598158Y CN U032330405 U CNU032330405 U CN U032330405U CN 03233040 U CN03233040 U CN 03233040U CN 2598158 Y CN2598158 Y CN 2598158Y
- Authority
- CN
- China
- Prior art keywords
- battery
- residual capacity
- capacity display
- lithium primary
- cell group
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 24
- 238000005070 sampling Methods 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y02E60/12—
Landscapes
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The utility model discloses a take residual capacity display device's former battery pack of lithium, it installs a residual capacity display device additional on lithium cell group, and this residual capacity display device's constitution is: the discharge current sampling resistor is connected in series in the discharge circuit of the battery pack, two ends of the sampling resistor are connected with two input ends of the battery monitor, and the output end of the microprocessor is connected with the display circuit. The method has the advantages that the residual electric quantity of the battery pack can be monitored at any time, a user can conveniently and timely prepare for replacement, and the problem of endless scrapping or misunderstanding of the battery on the performance of the battery due to the hysteresis of the initial voltage is avoided; the battery can be prevented from entering an over-discharge state, the battery is prevented from being deflated, leaking and even exploding to cause equipment loss and personal injury, and the use safety of the battery is ensured.
Description
Affiliated technical field
The utility model relates to a kind of lithium primary cell group, relates in particular to a kind of lithium primary cell group that can monitor battery capacity.
Background technology
Lithium primary cell group voltage can height can be low, capacity is changeable, can be suitable for different power supply requirements, applied range.But because lithium primary cell is that disposable battery had not both had charging process, discharge curve is steady substantially again, and when electric weight exhausted substantially, voltage just can obviously descend.Therefore it does not have the method for the such a kind of simple detection dump energy of rechargeable battery pack.The user often can only use down always, enters " cross and put " state until battery.But lithium battery does not allow " cross and put ", and battery pack is lost heart, leakage otherwise can make, even blast, causes equipment loss and personal injury.In addition, because there is the starting voltage hysteresis in lithium primary cell, when detection or use, though electric there's plenty of it during initial, but voltage is lower, makes the user think that battery pack do not have electricity or electric weight deficiency by mistake, causes battery to be scrapped in advance for no reason, form waste, perhaps cause user and battery manufacturer to produce unnecessary misunderstanding, the dispute of avenging a grievance, return goods.
Summary of the invention
The purpose of this utility model just provides a kind of lithium primary cell group that can monitor battery electric quantity at any time, be convenient in time perform the preparation of replacing, also can avoid the misunderstanding of user to battery performance, can prevent that more battery from entering " cross and put " state, avoid that battery loses heart, leakage even blast, cause equipment loss and personal injury, guarantee the safe in utilization of battery.
The utility model solves its technical problem, the technical scheme that is adopted is: a kind of lithium primary cell group with the dump energy display unit, its design feature is: install a residual capacity display unit on the lithium primary cell group additional, consisting of of this residual capacity display unit: the sampling resistor of discharging current is connected in the battery power discharge circuit, the sampling resistor two ends link to each other with two inputs of battery monitor, and the output of microprocessor links to each other with display circuit.
The beneficial effects of the utility model are: the lithium primary cell group is in discharge process, the discharging current sampling resistor of flowing through, produce and the proportional pressure drop signal of discharging current at the sampling resistor two ends, after this pressure drop signal is sent into battery monitor, by battery monitor conversion playback electricity current value and with carry out integral operation discharge time and draw the discharge electricity amount value, send in the microprocessor, subtract each other with the theoretical capacity value of this battery pack that writes in advance, promptly draw the current residual capacity of battery pack, output signal to display circuit by microprocessor then, demonstrate the residual capacity of battery pack.Thereby make the utility model can monitor the residual capacity of battery at any time, both be convenient to the user and in time performed and change to prepare, also avoided battery because of scrapping for no reason of causing of starting voltage hysteresis or to the misunderstanding of battery performance.Can prevent that more battery from entering " cross put " state, avoid that battery loses heart, leakage even blast, cause equipment loss and personal injury, guarantee the safe in utilization of battery.
After above-mentioned battery pack is connected in series a switch, to display circuit and microprocessor power supply.
Closed this switch shows residual capacity by display circuit when needing like this; On the contrary, disconnect this switch, display circuit and microprocessor promptly cut off the power supply, and no longer show, with save power.
Above-mentioned battery monitor adopts DS2438 battery monitor chip, and microprocessor adopts the PIC12CE518 microprocessor chip.
Adopt this type battery intelligent monitor chip of Dallas semiconductor company, its function is strong and oneself power consumption is very low.Its detectable input pressure drop signal value is low, and 10mv gets final product.Thereby make the pressure drop (also being the discharge voltage reduction of battery pack to subscriber equipment) on the sampling resistor, only ten to tens millivolts, very little to the discharge voltage influence, the power consumption that sampling resistor produces is also very small.In a word, device of the present utility model, power consumption is faint, does not influence or influence hardly the regular picture work of battery.
One end of above-mentioned sampling resistor links to each other with the respective signal input of battery monitor after being connected in series a divider resistance again, between two signal input parts of battery monitor and be connected to electric capacity.
Adopt such circuit structure, make the battery pack of the utility model applicable to big electric current, big capacity discharge.In such cases, the pressure drop that produces on the sampling resistor is bigger, and this pressure drop signal is after divider resistance and electric capacity carry out dividing potential drop, and the pressure drop signal at electric capacity two ends input battery monitor only is to adapt to the very little needs of battery monitor requirement applied signal voltage value.Adjust the resistance of divider resistance and the capacity of electric capacity, can make the utility model be applicable to the lithium primary cell group of various different voltages, capacity, flash-over characteristic.
Above-mentioned sampling resistor is serially connected in the battery pack negative pole place in the battery power discharge circuit.
Above-mentioned display circuit is made of at least one light-emitting diode, perhaps is made of liquid crystal display circuit.Adopt light-emitting diode, its simple structure, cost are low, for segmentation shows, are applicable to residual capacity is worth less demanding occasion.Liquid crystal display circuit is then constructed more complicated, and cost is more expensive, but the dump energy that shows is applicable to the more accurate occasion of residual capacity monitoring for quantizing the numeral demonstration.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is the circuit structure diagram of the utility model embodiment.
Embodiment
Embodiment one
Accompanying drawing illustrates, and a kind of embodiment of the present utility model is: a kind of lithium primary cell group with the residual capacity display unit, install a residual capacity display unit additional, the consisting of of this residual capacity display unit: discharging current sampling resistor R on lithium primary cell group E
1Be connected in the battery pack E discharge line sampling resistor R
1Two ends link to each other with two inputs of battery monitor BM, and the output of microprocessor CPU links to each other with display circuit.
After battery pack E is connected in series a K switch, to display circuit DP and microprocessor CPU power supply.This K switch can be selected sensitive switch K for use, pins sensitive switch K and promptly shows residual capacity, and the back of loosing one's grip shows i.e. disappearance.Easy to use, economize on electricity.
Battery monitor BM adopts DS2438 battery monitor chip, and microprocessor CPU adopts the PIC12CE518 microprocessor chip.
Sampling resistor R
1An end be connected in series a divider resistance R
2After link to each other with the respective signal input of battery monitor BM again, between two signal input parts of battery monitor BM and be connected to a capacitor C.This divider resistance R
2Constitute a capacitance-resistance bleeder circuit with capacitor C, obviously, divider resistance R
2Both can be serially connected on the voltage signal negative input end circuit of battery comparator BM, also can be serially connected on another input circuit, and divider resistance R
2Also interchangeable with the capacitor C position.
Sampling resistor R
1Be serially connected in the battery pack E negative pole place in the battery pack E discharge line.Also be the positive terminal V+ of the external discharge of battery pack E of present embodiment, directly link to each other with the anodal of battery pack E; And negative pole end V-, then the sampling resistor R through being connected in series
1After, the negative pole with battery pack E links to each other again.
Display circuit DP is made of at least one light-emitting diode D.
If 5 of the quantity of the light-emitting diode D of display circuit DP then can be by 5 grades, 100%, 80%, 60%, 40%, 20% shows the residual capacity value of battery pack E.Write the software difference according to CPU, display mode is varied, as it is bright to can be the 5th diode D, and the expression residual capacity is 100%; It is bright entirely also to can be five diodes, and the expression residual capacity is 100%.
Embodiment two
It is that the liquid crystal digital display circuit constitutes that this example is removed display circuit DP, and microprocessor CPU writes software, and driver and interface change, different with embodiment one outside; Remaining formation, operation principle and process are all basic identical with embodiment one.
Claims (6)
1, a kind of lithium primary cell group with the residual capacity display unit, it is characterized in that: on the lithium primary cell group, install a residual capacity display unit additional, consisting of of this residual capacity display unit: the sampling resistor of discharging current is connected in the battery power discharge circuit, the sampling resistor two ends link to each other with two inputs of battery monitor, and the output of microprocessor links to each other with display circuit.
2, a kind of lithium primary cell group with the residual capacity display unit according to claim 1 is characterized in that: after described battery pack is connected in series a switch, to display circuit and microprocessor power supply.
3, a kind of lithium primary cell group with the residual capacity display unit according to claim 1 is characterized in that: described battery monitor adopts DS2438 battery monitor chip, and microprocessor adopts the PIC12CE518 microprocessor chip.
4, a kind of lithium primary cell group according to claim 1 with the residual capacity display unit, it is characterized in that: an end of described sampling resistor links to each other with the respective signal input of battery monitor after being connected in series a divider resistance again, between two signal input parts of battery monitor and be connected to electric capacity.
5, a kind of lithium primary cell group with the residual capacity display unit according to claim 1, it is characterized in that: described sampling resistor is serially connected in the battery pack negative pole place in the battery power discharge circuit.
6, a kind of lithium primary cell group with the residual capacity display unit according to claim 1, it is characterized in that: described display circuit is made of at least one light-emitting diode, perhaps is made of liquid crystal display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032330405U CN2598158Y (en) | 2003-01-27 | 2003-01-27 | Lithium primary battery pack with residual capacity display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032330405U CN2598158Y (en) | 2003-01-27 | 2003-01-27 | Lithium primary battery pack with residual capacity display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598158Y true CN2598158Y (en) | 2004-01-07 |
Family
ID=34165547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032330405U Expired - Fee Related CN2598158Y (en) | 2003-01-27 | 2003-01-27 | Lithium primary battery pack with residual capacity display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2598158Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541904C (en) * | 2005-11-30 | 2009-09-16 | 比亚迪股份有限公司 | A kind of dump energy display circuit of secondary cell |
| CN102064287A (en) * | 2010-12-07 | 2011-05-18 | 乔丹洋 | Replaceable inner core type alkaline battery |
| CN107748328A (en) * | 2017-09-12 | 2018-03-02 | 莱克电气股份有限公司 | Digitize display system and method |
| CN111929595A (en) * | 2020-06-09 | 2020-11-13 | 山东北固新材料科技有限公司 | Method for measuring electric quantity state of lithium iron phosphate battery pack through hybrid series connection |
| CN112147523A (en) * | 2019-06-28 | 2020-12-29 | 烽火通信科技股份有限公司 | Button cell allowance measuring method and measuring device |
| CN112968223A (en) * | 2013-12-06 | 2021-06-15 | 深圳市大疆创新科技有限公司 | Power pack and unmanned vehicles |
-
2003
- 2003-01-27 CN CNU032330405U patent/CN2598158Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100541904C (en) * | 2005-11-30 | 2009-09-16 | 比亚迪股份有限公司 | A kind of dump energy display circuit of secondary cell |
| CN102064287A (en) * | 2010-12-07 | 2011-05-18 | 乔丹洋 | Replaceable inner core type alkaline battery |
| CN112968223A (en) * | 2013-12-06 | 2021-06-15 | 深圳市大疆创新科技有限公司 | Power pack and unmanned vehicles |
| CN112968223B (en) * | 2013-12-06 | 2024-03-08 | 深圳市大疆创新科技有限公司 | Power pack and unmanned aerial vehicle |
| CN107748328A (en) * | 2017-09-12 | 2018-03-02 | 莱克电气股份有限公司 | Digitize display system and method |
| CN112147523A (en) * | 2019-06-28 | 2020-12-29 | 烽火通信科技股份有限公司 | Button cell allowance measuring method and measuring device |
| CN112147523B (en) * | 2019-06-28 | 2023-11-14 | 烽火通信科技股份有限公司 | Button cell allowance measuring method and measuring device |
| CN111929595A (en) * | 2020-06-09 | 2020-11-13 | 山东北固新材料科技有限公司 | Method for measuring electric quantity state of lithium iron phosphate battery pack through hybrid series connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040107 Termination date: 20110127 |