CN1104769C - Circuit arrangement for preventing deep discharge of a battery - Google Patents
Circuit arrangement for preventing deep discharge of a battery Download PDFInfo
- Publication number
- CN1104769C CN1104769C CN 98802051 CN98802051A CN1104769C CN 1104769 C CN1104769 C CN 1104769C CN 98802051 CN98802051 CN 98802051 CN 98802051 A CN98802051 A CN 98802051A CN 1104769 C CN1104769 C CN 1104769C
- Authority
- CN
- China
- Prior art keywords
- interrupt
- voltage
- circuit board
- printed circuit
- signal
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a printed circuit board arrangement comprising a printed circuit board (1) provided with connectors (3, 49) for connecting the printed circuit board to a battery (5, 6), an interrupt circuit (2) comprising a first (15) and a second (16) input and output (14) connected to said connectors (3, 4), and a power supply module (17, 18) comprising a first (7) and a second (10) input connected to said connectors (3, 4), means for producing operating voltage (Uout) from battery voltage, and an interrupt input (9) for interrupting the feed of the operating voltage (Uout) in response to an interrupt signal. To allow the use of the same interrupt circuit at several different battery voltages, the power supply module (17, 18) comprises a control output (8) connected to the control input (9) of the interrupt circuit (2) for feeding a control signal to the interrupt circuit (2), said control signal indicating to the interrupt circuit (2) the voltage level at which the interrupt circuit (2) feeds the interrupt signal to the power supply module (16, 17).
Description
The present invention relates to a kind of printed circuit board arrangement, comprising: have the circuit board of first and second joints, this joint is used for this circuit board is connected to battery; Interrupt circuit comprises first and second inputs that are connected with this joint, is used to measure the device of cell voltage, and an output is used for when cell voltage is lower than predetermined voltage level, the predetermined interrupt signal of feeding; With the power module that is attached to this printed circuit board (PCB), this power module comprises first and second inputs that are connected with this joint, be used for from produce the device of operating voltage by this input cell voltage transmission and that be fed into this printed circuit board (PCB), and with the corresponding interrupting input end of the output of this interrupt circuit, be used to respond this interrupt signal and interrupt the operating voltage of being fed.
The invention particularly relates to the under voltage work that prevents battery powered telecommunication device, but the present invention also can be applicable to other occasion.When battery in use discharges, use the work of the battery powdered device of battery to be interrupted, in order to avoid cell voltage is fallen below the preset limit; Otherwise deep discharge can damage battery.Voltage pole limit value when the load of battery must stop especially depends on the rated voltage of this battery, and in other words, the limiting value that for example stops the load of a 24V and a 48V battery departs from each other.
Known printed circuit board (PCB) comprises an interrupt circuit, is used to be controlled at the voltage that offers power module that obtains from battery on this printed circuit board (PCB), and is used for falling preset limit when following when cell voltage, interrupts the work of this power module.If this known printed circuit board (PCB) is to use under some different cell voltages, then this power module should be replaced when each special time uses, with to should cell voltage.Under these circumstances, be used for when reaching a scheduled voltage, interrupting interrupt circuit existing problems just on this printed circuit board (PCB) of work of this power module originally.Like this, if cell voltage for example exceeds the interrupt circuit limit in when design, then this interrupt circuit can not work according to needed mode, because the limit of this interrupt circuit only just can reach after battery experiences deep discharge.
The objective of the invention is to address the above problem, and provide a solution, promptly can give fixed printed circuit board (PCB) and interrupt circuit thereof and for example under some different cell voltages, work, battery operated to prevent under voltage, and need not manual adjustment or replace interrupt circuit.The printed circuit board arrangement of the present invention that reaches this purpose is characterised in that, this power module comprises a control output end that is connected with the control input end of interrupt circuit, be used for predetermined control signal is fed into this interrupt circuit, this control signal indicates this predetermined voltage level to this interrupt circuit, at this voltage level, this interrupt circuit is fed into power module with interrupt signal.
Design of the present invention is to provide a control output end that is connected with the control input end of this interrupt circuit to this power module, makes this power module use control signal to indicate to this interrupt circuit at the voltage level that this level place cell load should interrupt.Therefore, same interrupt circuit can use under some different cell voltages, because the control of this power module is depended in the work of this interrupt circuit.Under any circumstance, all can select power module as the case may be, with corresponding with the rated voltage of employed battery, thereby all necessary parts that are used for appropriate control signals is fed into this interrupt circuit can be integrated into this power module of working under different cell voltages.Like this, the topmost advantage of printed circuit board (PCB) of the present invention is that same printed circuit board (PCB) and interrupt circuit thereof can be used for different cell voltages, and need not to regulate interrupt circuit.Having more, the same printed circuit board (PCB) of extensive use only needs sub-fraction different essential printed circuit board (PCB) and interrupt circuit with same interrupt circuit.
Give more detailed description below in conjunction with 1 pair of the preferred embodiments of the present invention of accompanying drawing, accompanying drawing 1 shows first preferred embodiment of printed circuit board layout of the present invention.
Accompanying drawing 1 shows two identical printed circuit board (PCB)s 1, and each comprises identical interrupt circuit 2.A 24V rated voltage battery 5 is connected with last printed circuit board (PCB) with 4 by joint 3.A 48V rated voltage battery 6 is connected with following printed circuit board (PCB) in a similar fashion by joint 3 and 4.
In order to ensure suitable operating voltage is provided to printed circuit board (PCB), can select a corresponding power module of the rated voltage with the battery that is connected in this printed circuit board (PCB) by mode known per se.Therefore, the power module 17 that will work and comprise a first input end 7 that is connected with this joint 3 and second input 10 that is connected with joint 4 under the 24V primary voltage is attached to printed circuit board (PCB) on this.The power module 18 that to work and comprise a first input end 7 that is connected with this joint 3 and second input 10 that is connected with joint 4 under the 48V primary voltage is attached to this time printed circuit board (PCB) in a similar manner.
This power module 17 and 18 can be any kind known per se, for example switched-mode power supply.This power module can be attached to this printed circuit board (PCB) 1 by for example quick breakaway.For example, power module 17 of printed circuit board (PCB) can be separated on this, and replace with another power module, is connected with this last printed circuit board (PCB) as long as its rated voltage departs from another battery of the rated voltage of battery 5.Under the situation shown in the accompanying drawing 1, the output voltage U out that obtains from the output 11 and 12 of the power supply of upper and lower two printed circuit board (PCB)s is identical, as 3.3V.Therefore, on this upper and lower printed circuit board (PCB), provide same operating voltage, irrelevant with the rated voltage of the battery that is connected with this printed circuit board (PCB).
In order to ensure the deep discharge that prevents battery 5 and 6, on this printed circuit board (PCB) 1, arrange an interrupt circuit 2, it comprises the first input end 15 and second input 16 that is connected with 4 with joint 3.This interrupt circuit also comprises a control input end 13 that is connected with the control output end 8 of this power module.As a result, this power module can use the control signal of feeding by this control input end to control this interrupt circuit, makes this interrupt circuit interrupt the work of this power module at the appropriate voltage level place based on employed battery.Accompanying drawing 1 is presented in the power module 17 that is attached to printed circuit board (PCB) on this, and input 7 and control output end 8 interconnect each other, and they are not to interconnect each other in the power module 18 of following printed circuit board (PCB).Therefore, power module 17 with 18 with different control signals this interrupt circuit 2 of feeding, thereby which power module this interrupt circuit 2 can be discerned and be attached to described printed circuit board (PCB).
Under the situation shown in the accompanying drawing 1, this interrupt circuit comprises a comparator 19, and it comprises that an input 15,16 and 13 with this interrupt circuit passes through resistance R 1, the first input end that R2 is connected with R3.Like this, the level of voltage signal U1 that is fed into the first input end of this comparator 19 also depends on the control input end control signals transmitted by this power supply, in other words, the type (this power supply depends on the rated voltage of employed battery again) that depends on this power supply exactly.The voltage signal U1 that 19 pairs of comparators are fed into its first input end compares with the reference voltage Uref that is fed into its second input.If the voltage level of voltage signal U1 is lower than this reference voltage Uref, then comparator 19 produces an interrupt signal, is fed into the interrupting input end 9 of this power module by the output 14 of this interrupt circuit.The work of this power module 17 has been interrupted in the appearance of interrupt signal, perhaps similarly, interrupts the work of this power module 18, thereby correspondingly stops the load of battery 5 or battery 6.
Should be appreciated that foregoing description and relevant drawings only are used to disclose the present invention.For the those of ordinary skill of prior art, a lot of corrections of the present invention and variation are very tangible, only otherwise deviate from the scope and spirit of the present invention disclosed in the claims.
Claims (3)
1, a kind of printed circuit board arrangement comprises:
Printed circuit board (PCB) (1) comprises first joint (3) and second joint (4), is used for this printed circuit board (PCB) and battery (5,6) are connected; Interrupt circuit (2), comprise and this joint (3,4) first input end of Lian Jieing (15) and second input (16), be used to measure device (R1, R2, the R3 of cell voltage, 19), and output (14), be used for when cell voltage is lower than predetermined voltage level the predetermined interrupt signal of feeding; With
Be attached to the power module (17 of this printed circuit board (PCB) (1), 18), described power module comprises and described joint (3,4) first input end of Lian Jieing (7) and second input (10), be used for from passing through described input (7,10) cell voltage generation operating voltage of transmitting (Uout) and the device that is fed into this printed circuit board (PCB) (1), and with the corresponding interrupting input end of output (14) (9) of this interrupt circuit, be used to respond this interrupt signal and interrupt this operating voltage (Uout) and feed, it is characterized in that:
This power module (17,18) comprise the control output end (8) that is connected with the control input end (13) of this interrupt circuit (2), be used for predetermined control signal is fed into this interrupt circuit (2), described control signal is to the described predetermined voltage level of this interrupt circuit (2) indication, at this voltage level place, this interrupt circuit (2) is fed into this power module (16,17) with interrupt signal.
2, according to the printed circuit board arrangement of claim 1, it is characterized in that
This interrupt circuit (2) comprises the device that is used for producing from the signal that receives by the first, the second input and control input end (15,16,13) voltage signal (U1),
This interrupt circuit (2) comprises comparison means (19), be used for described voltage signal (U1) and predetermined reference voltage (Uref) are compared, with measure this cell voltage and
This interrupt circuit (2) is arranged to when this comparison means (19) indicates the voltage level of this voltage signal (U1) to be lower than this reference voltage (Uref), the described interrupt signal of feeding.
3, according to the printed circuit board arrangement of claim 1, the voltage level that it is characterized in that described control signal is indicated this predetermined voltage level to this interrupt circuit (2), at this voltage level place, this interrupt circuit (2) is fed into this power module (17,18) with interrupt signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI970337A FI970337A (en) | 1997-01-27 | 1997-01-27 | Printed circuit board arrangement |
| FI970337 | 1997-01-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1244965A CN1244965A (en) | 2000-02-16 |
| CN1104769C true CN1104769C (en) | 2003-04-02 |
Family
ID=8547850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98802051 Expired - Fee Related CN1104769C (en) | 1997-01-27 | 1998-01-26 | Circuit arrangement for preventing deep discharge of a battery |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0960458A1 (en) |
| CN (1) | CN1104769C (en) |
| AU (1) | AU5864898A (en) |
| FI (1) | FI970337A (en) |
| WO (1) | WO1998036483A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2783979B1 (en) * | 1998-09-28 | 2000-11-10 | Cit Alcatel | PORTABLE ELECTRONIC DEVICE WITH BATTERY DISCHARGE CONTROL CIRCUIT, AND ASSOCIATED METHOD |
| CA2625685C (en) | 2005-10-14 | 2012-04-24 | Research In Motion Limited | System and method for managing battery slump |
| JP2010055394A (en) * | 2008-08-28 | 2010-03-11 | Sanyo Electric Co Ltd | Projection video display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2061642A (en) * | 1979-10-12 | 1981-05-13 | Contronic Controls | Back-up power supply |
| US5742148A (en) * | 1992-11-24 | 1998-04-21 | Seiko Instruments Inc. | Charge/discharge control circuit and chargeable electric power source apparatus |
| JP3272108B2 (en) * | 1993-07-07 | 2002-04-08 | 三洋電機株式会社 | Battery pack |
-
1997
- 1997-01-27 FI FI970337A patent/FI970337A/en unknown
-
1998
- 1998-01-26 WO PCT/FI1998/000069 patent/WO1998036483A1/en active Application Filing
- 1998-01-26 AU AU58648/98A patent/AU5864898A/en not_active Abandoned
- 1998-01-26 CN CN 98802051 patent/CN1104769C/en not_active Expired - Fee Related
- 1998-01-26 EP EP98901985A patent/EP0960458A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FI970337A (en) | 1998-07-28 |
| WO1998036483A1 (en) | 1998-08-20 |
| FI970337A0 (en) | 1997-01-27 |
| EP0960458A1 (en) | 1999-12-01 |
| CN1244965A (en) | 2000-02-16 |
| AU5864898A (en) | 1998-09-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20030402 Termination date: 20120126 |