CN1190273A - Rechargeable battery block - Google Patents
Rechargeable battery block Download PDFInfo
- Publication number
- CN1190273A CN1190273A CN97106274A CN97106274A CN1190273A CN 1190273 A CN1190273 A CN 1190273A CN 97106274 A CN97106274 A CN 97106274A CN 97106274 A CN97106274 A CN 97106274A CN 1190273 A CN1190273 A CN 1190273A
- Authority
- CN
- China
- Prior art keywords
- charging
- circuit
- battery block
- rechargeable battery
- relay
- 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.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery block with a charging and discharging protection circuit, which is a battery pack formed by connecting more than two single batteries in series, and also comprises a center tap, a charging and discharging circuit, a low-current charging circuit and a control charging voltage protection circuit which are connected with the battery pack. Therefore, the phenomenon that the charging battery block is damaged due to the fact that the charging voltage of the charger is not matched with or is too high than the rated voltage of the battery block can be avoided, the battery block is suitable for being made into a battery block formed by various lithium batteries or nickel-cadmium batteries, nickel-hydrogen batteries, zinc-nickel batteries, zinc-manganese batteries, zinc-silver batteries and the like, and the battery block can be matched with any charger which is equal to or exceeds the rated voltage of the battery block.
Description
The invention relates to a battery module, in particular to a rechargeable battery module with a charge-discharge protection circuit.
High-energy rechargeable battery blocks are generally used in high-tech electronic equipment such as wireless digital mobile phones, high-frequency wireless phones, video cameras, microcomputers and the like. Although these battery blocks have relatively good charging performance, they have the following disadvantages: 1. the price is high, and each battery block is about thousands of yuan; 2. since the operating voltages used by the electrical devices are different, and therefore the rated output voltages of the battery blocks are also different, when using these batteries, chargers with corresponding charging voltages must be provided, otherwise the rechargeable battery blocks are damaged during charging. For example, the S-4 wireless mobile phone manufactured by siemens of germany uses a lithium cobalt oxide lithium ion battery rated at 8.4 volts, and is equipped with a charger having a charging voltage of only 8.4 volts. 3. Besides several single battery combinations, the highest level is only provided with an overvoltage breaking circuit, and no other protection function exists.
The invention aims to solve the defects of the high-energy rechargeable battery block and provides a rechargeable battery block which comprises a charge-discharge protection circuit and can be matched with any charger with the voltage equal to or exceeding the rated voltage of the battery block.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a rechargeable battery block, which is composed of a battery box and a rechargeable battery pack arranged in the battery box, is characterized in that: the group battery by more than two single section battery series connection constitute, still including establish in the battery box with the charge-discharge protection circuit that the group battery links to each other, this charge-discharge protection circuit includes: A. a center tap arranged between any two single batteries; B. a charging and discharging circuit connected with the center tap; C. a low current charging circuit connected to the positive electrode of the battery pack; and D, a control charging voltage protection circuit connected between the charging and discharging circuit and the small current charging circuit.
Because the invention adopts the technical scheme, the charging and discharging circuit, the charging voltage control protection circuit and the low-current charging circuit are added in the rechargeable battery block, so that the battery block is automatically disconnected with the normal charging circuit after being charged to 90% of the rated voltage, and the low-current charging circuit continuously charges to the rated voltage of the battery block, thereby avoiding the phenomenon that the rechargeable battery block is damaged due to overhigh charging voltage of the charger. The rechargeable battery block can be matched with any charger with the voltage equal to or exceeding the rated voltage of the battery block, so that the cost is saved, and convenience is brought to a user.
The properties, features and advantages of the present invention are further illustrated below with reference to examples and figures.
FIG. 1 is an electrical block diagram of the present invention;
FIG. 2 is an electrical schematic of a first embodiment of the invention;
fig. 3 is an electrical schematic of a second embodiment of the invention.
Please refer to fig. 1: the battery pack block of the invention is composed of a battery box 10 and a rechargeable battery pack 1 arranged in the battery box, wherein the battery pack 1 is formed by connecting more than two single batteries in series, and the battery pack block also comprises a charge and discharge protection circuit which is arranged in the battery box 10 and connected with the battery pack, and the charge and discharge protection circuit comprises: a center tap 2 arranged between any two single batteries, a charging and discharging circuit 3 connected with the center tap 2, and a low current charging circuit 4 connected with the anode of the battery pack 1, and a control charging voltage protection circuit 5 is also connected between the input end of the low current charging circuit 4 and the input end of the charging and discharging circuit 3.
The first embodiment of the present invention is shown in FIG. two: the battery pack 1 of the present embodiment is formed by connecting four single batteries 11 in series, and the single battery 11 may be various lithium ion batteries, nickel cadmium batteries, nickel hydrogen batteries, zinc-nickel batteries, zinc-manganese batteries, zinc-silver batteries, and the like. A center tap 2 is arranged between any two single batteries, and the center tap 2 of the embodiment is arranged between the front two single batteries and the rear two single batteries; a charging and discharging circuit 3 is connected between the center tap 2 and the negative electrode of the battery pack 1, the charging and discharging circuit is composed of an adjustable resistor R2 and a capacitor C2, the resistance value of the adjustable resistor R2 is adjusted, namely, the charging voltage preset value of the battery pack 1 is determined, and generally, the voltage is about 90% of the rated output voltage of the battery pack. The battery block of the present embodiment is a battery used in a wireless digital mobile phone, and the rated voltage of the battery block is generally between 7.6 volts and 8.4 volts, and if the rated voltage of the battery pack is set to 8.4 volts, the present embodiment sets the main charging voltage adjusted by the adjustable resistor R2 to a predetermined value of 7.6 volts. In order to ensure the charging and discharging performance of the invention, a diode V is connected in series between the center tap 2 and the charging and discharging circuit 3.
A low current charging circuit 4 is connected to the positive pole of the battery 1 and continues to charge the battery 1 with a low current to supplement the continued charging of the battery with insufficient voltage to the nominal voltage, for example, from 7.6 volts to 8.4 volts. The low-current charging circuit is composed of an adjustable resistor R1 and a diode V1 connected with the adjustable resistor R1. The adjustable resistor R1 in the low-current charging circuit may be connected in parallel with the diode V1, or may be connected in series with the diode V1. In this embodiment, the resistance of the resistor R1 is adjusted by connecting the adjustable resistor R1 and the diode in parallel, that is, the voltage value of the low-current charging is adjusted.
A control charging voltage protection circuit 5 is also connected between the input end of the low current charging circuit 4 and the output end of the charging and discharging circuit 3, and the control charging voltage protection circuit 5 consists of a switch circuit K2 and a mechanical relay K1 connected with the switch circuit K2. And one switch end K2-1 of the switch circuit K2 is connected with a tap of an adjustable resistor R2 in the charging and discharging circuit, and the K2-2 end of the switch circuit K2 is connected with the positive pole of the charging power supply. The K2-3 end of the switch circuit is connected with a coil of the relay K1 of the control charging voltage protection circuit, a normally closed contact K1-1 of the relay K1 is connected with a charging power supply, and a normally open contact K1-2 of the relay K1 is connected with the low-current charging circuit. The switch circuit K2 in the present invention may be an opto-electronic coupled relay including a CMOS integrated circuit, such as AQV41 type opto-electronic coupled relay, or other electronic switch circuit, or may be a time relay. In this example K2, AQV41 opto-electronic coupled relay was used.
In order to accurately control the charging voltage, a thermistor RT can be connected in parallel between the tap of the adjustable resistor R2 in the charging and discharging circuit 3 and the negative electrode of the battery pack 1 so as to automatically adjust the influence of the temperature on the charging voltage.
A self-recovery fuse can be connected in series between the two single-pole batteries with the center tap, so that the purpose of protecting the battery pack is achieved.
The working principle of the invention is as follows:
when the battery block is inserted into a charger for charging, charging voltage is applied to the battery block, a voltage drop between the central tap 2 and the cathode of the battery pack 1 is added to enable the diode V to be conducted, and the charging and discharging circuit 3 works to charge the battery pack; when the voltage of the battery pack exceeds the preset voltage value, the switch circuit K2 is switched on, the charging voltage protection circuit is controlled to work, the end K2-1 of the switch circuit K2 is disconnected with the charging and discharging circuit 3, and is closed with the end K2-3, and the coil of the relay K1 is switched on. The normally closed contact K1-1 of the relay K1 is disconnected with the positive charging end of the battery component 1, and is closed with the normally open contact K1-2 of the relay K1, so that the low-current charging circuit 4 is connected. Therefore, the charging and discharging circuit 3 for charging the battery pack is disconnected with the charging power supply, and the low-current charging circuit 4 is used for continuously and slightly charging the battery pack 1, so that the voltage of the battery pack 1 gradually approaches to a rated voltage value, and the charging process of the battery pack is completed.
A second embodiment of the invention is shown in figure three. The second embodiment is different from the first embodiment in size in electric principle, and also comprises a battery pack 1 formed by connecting more than two single batteries in series, a center tap 2 arranged between any two single batteries, a charging and discharging current circuit 3 connected with the center tap 2 and a small current charging circuit 4 connected with the anode of the battery pack 1, wherein a charging voltage control protection circuit 5 is also connected between the input end of the small current charging circuit 4 and the charging and discharging circuit. The difference is that the charging voltage control protection circuit is composed of a relay K1, a coil of the relay K1 is connected with the output end of the charging and discharging circuit 3, a normally closed contact K1-1 of the relay K1 is connected with a charging power supply, and a normally open contact K1-2 of the relay K1 is connected with the input end of the low-current charging circuit 4. When the voltage of the battery pack exceeds a set voltage value, the coil of the relay K1 is conducted, the normally closed contact K1-1 of the relay K1 is disconnected with the positive charging end of the battery pack 1, and the normally open contact K1-2 of the relay K1 is closed, so that the low-current charging circuit 4 is connected. Therefore, the charging and discharging circuit for charging the battery pack originally is disconnected from the charging power supply due to the fact that the charging and discharging circuit K1-3 is switched to the low-current charging circuit 4 to continue micro-charging the battery pack 1, the voltage of the battery pack 1 gradually tends to a rated voltage value, and the charging process of the battery pack is completed.
The invention is suitable for manufacturing various chargeable lithium ion batteries, nickel cadmium batteries, nickel hydrogen batteries, zinc-nickel batteries, zinc-manganese batteries, zinc-silver batteries and the like, the manufactured battery block has good charging and discharging performance and low production cost, and can be matched with any charger which is equal to or exceeds the rated voltage of the battery block.
Claims (10)
1. A rechargeable battery block, which is composed of a battery box and a rechargeable battery pack arranged in the battery box, is characterized in that: the group battery by more than two single section battery series connection constitute, still including establish in the battery box with the charge-discharge protection circuit that the group battery links to each other, this charge-discharge protection circuit includes:
A. a center tap arranged between any two single batteries;
B. a charging and discharging circuit connected with the center tap;
C. a low current charging circuit connected to the positive electrode of the battery pack; and the number of the first and second groups,
D. and the charging voltage control protection circuit is connected between the charging and discharging circuit and the low-current charging circuit.
2. A rechargeable battery block according to claim 1, characterized in that: and a diode V is also connected in series between the center tap and the charge-discharge circuit.
3. The rechargeable battery block of claim 1, wherein: the charging and discharging circuit consists of an adjustable resistor R2 and a capacitor C.
4. The rechargeable battery block of claim 1, wherein: the charging voltage control protection circuit is composed of a switch circuit K2 and a relay K1 connected with the switch circuit K2, wherein the K2-1 end of the switch circuit K2 is connected with a tap of an adjustable resistor R2 in the charging and discharging circuit, and the K2-2 end of the switch circuit K2 is connected with the anode of a charging power supply.
5. The rechargeable battery block of claim 1, wherein: the low-current charging circuit is composed of an adjustable resistor R1 and a diode V1 connected with the adjustable resistor R1.
6. A rechargeable battery block according to claim 1 or 3, characterised in that: the coil of the relay K1 of the control charging voltage protection circuit is connected with the K2-3 end of the switch circuit, a normally closed contact K1-1 of the relay K1 is connected with a charging power supply, and a normally open contact K1-2 of the relay K1 is connected with the low-current charging circuit.
7. A rechargeable battery block according to claim 1, characterized in that: the charging voltage control protection circuit is composed of a relay K1, a coil of the relay K1 is connected with a charging and discharging circuit, a normally closed contact K1-1 of the relay is connected with a charging power supply, and a normally open contact K1-2 of the relay is connected with a low-current charging circuit.
8. A rechargeable battery block according to claim 1, characterized in that: a thermistor RT can be connected in parallel between a tap of the adjustable resistor R2 in the charging and discharging circuit and the cathode of the battery pack.
9. A rechargeable battery block according to claim 1 or 4, characterized in that: the adjustable resistor R1 in the small-current charging circuit can be connected with the diode V1 in parallel or connected with the diode V1 in series.
10. A rechargeable battery block according to claim 1, characterized in that: a self-recovery fuse can be connected in series between the two single batteries with the center tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97106274A CN1084945C (en) | 1997-02-06 | 1997-02-06 | Rechargeable battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97106274A CN1084945C (en) | 1997-02-06 | 1997-02-06 | Rechargeable battery module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1190273A true CN1190273A (en) | 1998-08-12 |
| CN1084945C CN1084945C (en) | 2002-05-15 |
Family
ID=5168530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97106274A Expired - Fee Related CN1084945C (en) | 1997-02-06 | 1997-02-06 | Rechargeable battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1084945C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779420A (en) * | 2015-03-11 | 2015-07-15 | 小米科技有限责任公司 | Battery charging method and device |
| CN105538212A (en) * | 2015-12-31 | 2016-05-04 | 宁波中旺工具有限公司 | Electric screw driver with external key |
| CN105563401A (en) * | 2015-12-31 | 2016-05-11 | 宁波中旺工具有限公司 | Electric screwdriver provided with circuit protection unit storage batteries |
| CN110549290A (en) * | 2019-09-27 | 2019-12-10 | 山东中车同力达智能机械有限公司 | intelligent digital display torque wrench circuit control system and control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3121963B2 (en) * | 1993-06-30 | 2001-01-09 | 太陽誘電株式会社 | battery pack |
| JP3435613B2 (en) * | 1994-12-26 | 2003-08-11 | 日産自動車株式会社 | Battery pack charging device |
-
1997
- 1997-02-06 CN CN97106274A patent/CN1084945C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779420A (en) * | 2015-03-11 | 2015-07-15 | 小米科技有限责任公司 | Battery charging method and device |
| CN104779420B (en) * | 2015-03-11 | 2018-09-25 | 小米科技有限责任公司 | Method for charging batteries and device |
| CN105538212A (en) * | 2015-12-31 | 2016-05-04 | 宁波中旺工具有限公司 | Electric screw driver with external key |
| CN105563401A (en) * | 2015-12-31 | 2016-05-11 | 宁波中旺工具有限公司 | Electric screwdriver provided with circuit protection unit storage batteries |
| CN110549290A (en) * | 2019-09-27 | 2019-12-10 | 山东中车同力达智能机械有限公司 | intelligent digital display torque wrench circuit control system and control method |
| CN110549290B (en) * | 2019-09-27 | 2022-02-15 | 山东中车同力达智能装备有限公司 | Intelligent digital display torque wrench circuit control system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1084945C (en) | 2002-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1307742C (en) | Back-up battery for cellular telephone | |
| CN109347154B (en) | Lithium battery charging and discharging drive protection system | |
| CN101916983A (en) | Battery protection circuit and portable light | |
| US6057670A (en) | Smart connector for rechargeable battery | |
| CN202014087U (en) | Lithium battery charging protection circuit for portable system | |
| CN2922235Y (en) | Power lithium ion cell protecting circuit | |
| CN106026244B (en) | Lithium ion battery charge-discharge protection circuit and lithium-ion battery systems | |
| CN208094170U (en) | A kind of battery protecting circuit and dust catcher | |
| CN1084945C (en) | Rechargeable battery module | |
| CN205900734U (en) | Lithium cell with reduce output voltage function | |
| CN2938522Y (en) | Overload protection circuit of power lithium ion battery | |
| CN111181205A (en) | Parallel high-voltage control box of battery system | |
| CN201150006Y (en) | Charging-discharging device for lithium ion battery set | |
| CN115549264A (en) | Battery management system and charge equalization control method | |
| CN2922233Y (en) | Over-charging protecting circuit for power lithium ion cell | |
| CN212137299U (en) | Parallel high-voltage control box of battery system | |
| JPH06290815A (en) | Equipment system | |
| CN1858934A (en) | Grouping charging and discharging work method for accumulator | |
| CN209913490U (en) | Battery protection chip and battery system | |
| CN2857299Y (en) | Charging protective circuit of lithium cell | |
| CN209982096U (en) | Battery pack management device for replacing storage battery monomer | |
| CN202695637U (en) | Lithium ion battery | |
| CN202076776U (en) | Multifunctional charging and discharging protective circuit for nickel-metal hydride battery | |
| CN2293124Y (en) | Rechargeable battery block | |
| CN100589261C (en) | Chargeable battery |
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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |