CN200966004Y - Battery charger - Google Patents
Battery charger Download PDFInfo
- Publication number
- CN200966004Y CN200966004Y CNU2006200170431U CN200620017043U CN200966004Y CN 200966004 Y CN200966004 Y CN 200966004Y CN U2006200170431 U CNU2006200170431 U CN U2006200170431U CN 200620017043 U CN200620017043 U CN 200620017043U CN 200966004 Y CN200966004 Y CN 200966004Y
- Authority
- CN
- China
- Prior art keywords
- voltage
- charging
- constant
- battery
- current
- 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 - Lifetime
Links
- 238000007600 charging Methods 0.000 abstract description 49
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 description 12
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 230000005669 field effect Effects 0.000 description 4
- 238000010280 constant potential charging Methods 0.000 description 3
- 238000010277 constant-current charging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a battery charging device, which is composed of a voltage converter and a constant voltage control circuit; wherein the voltage converter can output the charging voltage at a certain initially preset value while increasing charging voltage as the time goes by. When the output voltage reaches the preset charging voltage, the constant voltage control circuit controls the voltage converter to output a constant voltage. The utility model provides a battery charging device with simple embody manner, low production cost and high efficiency and energy saving.
Description
Technical field
The utility model relates to a kind of battery charger, especially the charging device of lithium ion battery.Be specially adapted to charging to the lithium ion battery of a plurality of unprotected circuits.
Background technology
At present, to usually use in the charging of battery first constant current again the mode of constant voltage charge, at first utilize and decide electric current and charge to given upper voltage limit, remain on this voltage then.Especially lithium ion battery in the battery production manufacture process, also needs to carry out the batch charging without any the lithium ion battery of protective circuit after changing into.Be traditional charging device constant-current control circuit figure as shown in Figure 1, during constant current charge, field effect transistor T of charge circuit
1And feedback sample voltage U
2Realize the constant current charge of battery, as seen from Figure 1, Switching Power Supply 6.3V---field effect transistor---rechargeable battery constitutes charge circuit, wherein a T
1Be the field effect transistor of control charging, U
1Be the battery both end voltage.For field effect transistor, work as V
GSPipe conducting during greater than the conducting threshold values of pipe; And V
GSOne regularly, no matter V
DsWhy be worth, flow through the electric current I of field effect transistor
DConstant (as shown in Figure 2), work as V
GSAfter the increase, I
DAlso increase, at this moment sampled voltage U
2Increase, feed back to the control constant-current circuit, make V
GSDescend, cause charging current I
DAlso descend.Charge circuit is exactly by sampled voltage U
2Feedback regulate V
GSSize, thereby control I
DConstant current, realize constant current charge.After constant current charge reaches predetermined voltage 4.2V (usually predetermined voltage is set at 4.2V), with constant voltage 4.2V battery is being carried out constant voltage charge then, when charging current during less than predetermined current value, complete charge.Fig. 2 is traditional first constant current charging modes curve chart of constant voltage again.For above-mentioned charging scheme, each battery all needs independently constant current control module, constant voltage control module, charging device cost height.Correspondingly, charging device self energy consumption height, caloric value is big, utilization rate of electrical is low.Further, for timely heat radiation, also, therefore increased the detecting box energy consumption greatly specially for the constant current charge control circuit is equipped with radiator fan.
The traditional charging device that with the model is 9083A is an example, this charging device has 336 battery charge positions, reach a conclusion through experiment: when simultaneously 336 batteries being charged, at the used electric energy of whole charging process, roughly three parts such as heat radiation energy consumption that absorbed in energy consumption, charging circuit energy consumption and the cabinet by battery consume, and the three respectively accounts for about 1/3rd.Like this, the utilization rate of electrical of charging device is just very low, has only about 33%.From energy consumption curve figure Fig. 3 of this charging device as can be known: energy consumption accounts for the overwhelming majority the constant current charge process.And utilization rate of electrical is low in the constant current charge process, therefore needs to improve this charging modes and charging device.
Summary of the invention
The utility model purpose provides the battery charger that a kind of implementation is simple, cost of manufacture is low, energy-efficient.
Realize the technical scheme of the utility model purpose:
A kind of battery charger, comprise voltage changer and constant-voltage control circuit, As time goes on described voltage changer can and constantly increase the charging voltage of output with a certain initial set value output charging voltage, when the charging voltage of output reaches the charging voltage of setting, by the constant charging voltage of described constant-voltage control circuit control voltage changer output.
Further, comprise a timer, this timing phase is used to control the time of charge power supply constant voltage charge, after constant voltage charging time reaches predetermined value, stops to export charging voltage by timer control voltage changer.Comprise current sensing means and control device, described current sensing means is in order to detect charging current, when predetermined little current value that the charging current of each battery reaches that an expression battery charges fully, stop to export charging voltage by control device control voltage changer.
Adopt technique scheme, the utility model beneficial technical effects is: 1, charge by the mode that adopts control voltage, broken the traditional concept of conventional constant-current constant-voltage charging mode.2, those of ordinary skill in the art can understand, since the realization circuit of constant current charge than the realization circuit complexity of control voltage many, the energy consumption of constant current charger is far longer than the energy (referring to Fig. 3) that battery absorbs, therefore, adopt the realization circuit of control voltage, the one, saved the cost of charging device, the 2nd, greatly reduce the circuit energy consumption of charging device.Simultaneously,, do not need radiator fan, further reduced energy consumption again because of the circuit energy consumption of control voltage is little.
In sum, adopt the utility model, utilization rate of electrical is greatly enhanced,
Description of drawings
Fig. 1 is traditional charging device constant-current control circuit figure;
Fig. 2 is traditional first constant current charging modes curve chart of constant voltage again;
Fig. 3 is the energy consumption curve figure of Fig. 1 charging device;
Fig. 4 is the structural representation of a kind of lithium ion cell charging device of the utility model;
Fig. 5 is the structural representation of the another kind of lithium ion cell charging device of the utility model;
Embodiment
Embodiment 1, and a kind of lithium ion cell charging device as shown in Figure 4, comprises voltage changer 1, constant-voltage control circuit 2 and timer 5.It is the Switching Power Supply of TASN-4V5-250 that voltage changer 1 can adopt model, by voltage changer 1 with the initial charge voltage U
Min=3.8 pairs of batteries charge, and the charging voltage that raises simultaneously, time-dependent current are to a plurality of battery 4 charged in parallels, when charging voltage is increased to setting voltage U
MaxBehind=the 4.2V, keep this setting voltage U by constant-voltage control circuit 2 control voltage changers 1
Max=4.2V carries out constant voltage charge.Timer 5 is used to control constant voltage charging time, finishes the charging to all batteries after constant voltage charging time reaches 110 minutes.
Claims (3)
1, a kind of battery charger is characterized in that: comprise voltage changer and constant-voltage control circuit, the output control voltage changer of described constant-voltage control circuit.
2, battery charger as claimed in claim 1 is characterized in that: comprise a timer, the output signal control voltage changer of described timer.
3, battery charger as claimed in claim 2 is characterized in that: comprise current sensing means, the output of voltage changer connects current sensing means, detects the output current of voltage changer by current sensing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200170431U CN200966004Y (en) | 2006-07-17 | 2006-07-17 | Battery charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200170431U CN200966004Y (en) | 2006-07-17 | 2006-07-17 | Battery charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200966004Y true CN200966004Y (en) | 2007-10-24 |
Family
ID=38870023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200170431U Expired - Lifetime CN200966004Y (en) | 2006-07-17 | 2006-07-17 | Battery charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200966004Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964431A (en) * | 2010-10-14 | 2011-02-02 | 林道勇 | Charging and discharging method of lithium secondary battery |
| CN101976744A (en) * | 2010-10-14 | 2011-02-16 | 林道勇 | Charging and discharging method for secondary battery |
| CN111799497A (en) * | 2020-06-30 | 2020-10-20 | 欣旺达电子股份有限公司 | Battery formation system and battery formation method |
-
2006
- 2006-07-17 CN CNU2006200170431U patent/CN200966004Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964431A (en) * | 2010-10-14 | 2011-02-02 | 林道勇 | Charging and discharging method of lithium secondary battery |
| CN101976744A (en) * | 2010-10-14 | 2011-02-16 | 林道勇 | Charging and discharging method for secondary battery |
| CN111799497A (en) * | 2020-06-30 | 2020-10-20 | 欣旺达电子股份有限公司 | Battery formation system and battery formation method |
| CN111799497B (en) * | 2020-06-30 | 2022-04-15 | 欣旺达电子股份有限公司 | Battery formation system and battery formation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071024 |
|
| EXPY | Termination of patent right or utility model |