CN110994708B - Waste battery residual energy recovery circuit - Google Patents
Waste battery residual energy recovery circuit Download PDFInfo
- Publication number
- CN110994708B CN110994708B CN201911077252.3A CN201911077252A CN110994708B CN 110994708 B CN110994708 B CN 110994708B CN 201911077252 A CN201911077252 A CN 201911077252A CN 110994708 B CN110994708 B CN 110994708B
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- Prior art keywords
- circuit
- electric energy
- waste battery
- transfer
- battery
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- 239000010926 waste battery Substances 0.000 title claims abstract description 55
- 238000011084 recovery Methods 0.000 title claims abstract description 27
- 238000002955 isolation Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000003139 buffering effect Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 description 10
- 238000003306 harvesting Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
-
- 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
- H02J7/007—Regulation of charging or discharging current or voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a waste battery residual energy recovery circuit which comprises an electric energy collection circuit, an electric energy buffer unit and an electric energy transfer circuit, wherein the electric energy collection circuit is a first DC/DC circuit, and the electric energy transfer circuit is a second DC/DC circuit; the input end of the electric energy collection circuit is used for being connected with the electric energy output end of the waste battery, and the output end of the electric energy collection circuit is connected with the electric energy caching unit and used for caching the energy in the waste battery into the electric energy caching unit; the input end of the electric energy transfer circuit is connected with the electric energy buffer unit, and the output end of the electric energy transfer circuit is used for being connected with the transfer battery and transferring the energy buffered in the electric energy buffer unit into the transfer battery. The invention can simultaneously consider the performances of the waste battery and the dump battery, and avoid the damage of the electric energy recovery to the safety and the service life of the waste battery and the dump battery.
Description
Technical Field
The invention relates to a waste battery residual energy recovery circuit, and belongs to the technical field of power electronics.
Background
With the development of the switching power supply technology and the wide application of various handheld devices, various batteries are widely applied to electronic devices and systems in various industries, and the total application amount of the various batteries is very large, so that a large amount of waste batteries are generated. The waste battery still has residual electric quantity, especially the electric automobile has strict performance requirement on the power battery, so the power battery eliminated by the electric automobile generally has about 80% of residual energy, the residual electric quantity can not normally work the electric equipment, but if the electric equipment is directly scrapped, huge waste of energy is caused, and the residual energy can be recovered and stored into the storage battery by the recovery device for use.
At present, the recovery of the residual electric quantity of the waste battery is studied at home and abroad. The road lamp has the advantages that the road lamp is foreign, the residual electric quantity of the waste battery can be fully utilized, and meanwhile, the road lamp has the function of a recycling station. The street lamp bottom is provided with a plurality of holes with different sizes, so that the street lamp can adapt to batteries with different models, and the high-efficiency LED lamp is adopted to provide illumination, so that the residual electric quantity in the batteries can be fully exhausted. When in use, a user only needs to put the used waste battery into the corresponding hole. The street lamp effectively utilizes the excess energy of the waste battery, but cannot effectively extract and store the excess energy of the waste battery. Domestic researchers have proposed that the electric energy in the waste battery is recovered to the rechargeable battery through a boost circuit, but in the electric energy recovery process, the electric energy in the waste battery can only be obtained currently, and the control of the boost circuit cannot simultaneously consider the performances of the waste battery and the rechargeable battery, for example, the problems of reduced battery safety and reduced service life caused by taking electricity according to the maximum power and storing electricity according to the maximum conversion power.
Disclosure of Invention
The invention aims to provide a waste battery residual energy recovery circuit which is used for solving the problems that the performance of a waste battery and a rechargeable storage battery cannot be simultaneously considered in the existing waste battery energy recovery mode, so that the safety of the battery is reduced and the service life of the battery is shortened.
In order to solve the technical problems, the invention provides a waste battery residual energy recovery circuit which comprises an electric energy collection circuit, an electric energy buffer unit and an electric energy transfer circuit, wherein the electric energy collection circuit is a first DC/DC circuit, and the electric energy transfer circuit is a second DC/DC circuit; the input end of the electric energy collection circuit is used for being connected with the electric energy output end of the waste battery, and the output end of the electric energy collection circuit is connected with the electric energy caching unit and used for caching the energy in the waste battery into the electric energy caching unit; and the input end of the electric energy transfer circuit is connected with the electric energy buffer unit, and the output end of the electric energy transfer circuit is used for being connected with the transfer battery and transferring the energy buffered in the electric energy buffer unit into the transfer battery.
The beneficial effects of the invention are as follows: through setting up the electric energy buffer unit, can take out the energy in the abandonment battery and temporarily store in the electric energy buffer unit, when needs carry out energy transfer, transfer the energy of storing in the electric energy buffer unit again into the transfer battery, because electric energy collection circuit and electric energy transfer circuit can control alone, can compromise the performance of abandonment battery and transfer battery simultaneously, avoided the electric energy to retrieve the security and the life-span of abandonment battery and transfer battery and cause the harm.
Further, in order to reliably realize energy buffering, the electric energy buffering unit comprises an energy storage capacitor.
Further, in order to reliably take out energy from the waste battery for buffering and transfer the buffered energy to the transfer battery, the first DC/DC circuit and/or the second DC/DC circuit are/is a boost circuit.
Further, in order to control the boost circuit, the device further comprises a controller, and the controller is in control connection with the boost circuit.
Further, in order to reliably control the boost circuit, the controller is in control connection with the boost circuit through a PWM control circuit.
Further, in order to make the controller work normally, the controller also comprises an auxiliary power supply, and the auxiliary power supply is in power supply connection with the controller.
Further, the boost circuit comprises a boost inductor, a control switch and a unidirectional conduction device; one end of the boost inductor is connected with the first input end of the boost circuit, the other end of the boost inductor is connected with the anode of the unidirectional conduction device, the cathode of the unidirectional conduction device is connected with the first output end of the boost circuit, the first conduction end of the control switch is connected with the connection ends of the boost inductor and the unidirectional conduction device, and the second conduction end of the control switch is respectively connected with the second input end and the second output end of the boost circuit.
Further, the control switch is a MOS tube.
Further, the unidirectional conduction device is a unidirectional isolation diode.
Drawings
FIG. 1 is a schematic diagram of a waste battery residual energy recovery circuit of the present invention;
fig. 2 is a circuit diagram of the waste battery residual energy recovery circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment provides a waste battery residual energy recovery circuit, which comprises an electric energy collection circuit, an electric energy buffer unit, an electric energy transfer circuit, a controller and an auxiliary power supply for supplying power to the controller, as shown in fig. 1. The input end of the electric energy collection circuit is used for being connected with the electric energy output end of the waste battery, the output end of the electric energy collection circuit is connected with the electric energy caching unit, and the electric energy collection circuit is used for caching the energy in the waste battery into the electric energy caching unit. The input end of the electric energy transfer circuit is connected with the electric energy buffer unit, and the output end of the electric energy transfer circuit is used for being connected with the transfer battery and transferring the energy buffered in the electric energy buffer unit into the transfer battery.
As shown in fig. 2, the power harvesting circuit is a DC/DC circuit, which is embodied as a boost circuit including a boost inductor L 1 MOS tube Q 1 And unidirectional isolation diode D 1 . Wherein, boost inductance L 1 Is used as the first input end of the electric energy collection circuit for connecting with the anode of the waste battery. Boost inductor L 1 The other end of (a) is connected with a unidirectional isolation diode D 1 Is one-way isolation diode D 1 The cathode of the power collecting circuit is used as a first output end of the power collecting circuit and is used for being connected with a first connecting end of the power buffer unit. MOS tube Q 1 Is connected with the boost inductor L 1 And unidirectional isolation diode D 1 Is connected with MOS tube Q 1 The source electrode of the (a) is respectively used as a second input end and a second output end of the electric energy collection circuit and is respectively used for connecting the cathode of the waste battery and a second connecting end of the electric energy buffer unit.
It should be noted that the boost circuit in fig. 2 is only one specific embodiment of the DC/DC circuit, and the boost circuit may be modified accordingly. For example, MOS transistor Q 1 Can be replaced by other types of control switches such as triodes and the like, and a unidirectional isolation diode D 1 Can be used instead ofAnd is replaced by other types of unidirectional conductive devices. Of course, as other embodiments, the power harvesting circuit may take other forms of DC/DC circuits known in the art.
As shown in fig. 2, the power dump circuit is a DC/DC circuit, which is embodied as a boost circuit including a boost inductor L 2 MOS tube Q 2 And unidirectional isolation diode D 2 . Wherein, boost inductance L 2 One end of the power transfer circuit is used as a first input end of the power transfer circuit and is used for being connected with a first connection end of the power buffer unit, and the boost inductor L 2 The other end of (a) is connected with a unidirectional isolation diode D 2 Is one-way isolation diode D 2 The cathode of the electric energy transfer circuit is used as a first output end of the electric energy transfer circuit and is connected with the anode of the transfer battery. MOS tube Q 2 Is connected with the boost inductor L 2 And unidirectional isolation diode D 2 Is connected with MOS tube Q 2 The source electrodes of the power buffer unit are respectively used as a second input end and a second output end of the power transfer circuit and are respectively connected with a second connection end of the power buffer unit and a cathode of the buffer battery.
Similar to the power harvesting circuit, the power dump circuit is only provided as one specific embodiment, and as other embodiments, the power dump circuit may also use other types of DC/DC circuits in the prior art, and the specific circuit may be the same as or different from the power harvesting circuit.
As shown in fig. 2, the power buffer unit is an energy storage capacitor C, and one end of the energy storage capacitor C is used as a first connection end of the power buffer unit and is respectively used for connecting a first output end of the power collecting circuit and a first input end of the power transferring circuit; the other end of the energy storage capacitor C is used as a second connecting end of the electric energy buffer unit and is respectively used for connecting a second output end of the electric energy collecting circuit and a second input end of the electric energy transferring circuit. Of course, as other embodiments, the electric energy buffer unit may also be formed by connecting a plurality of energy storage capacitors in series, in parallel or in series-parallel.
As shown in fig. 2, the controller (detection and controller) is connected with the MOS tube Q 1 Sum MOS tube Q 2 ，s 1 Is MOS tube Q 1 Control signal s of (2) 2 Is MOS tube Q 2 Is controlled by a control signal of (a). During specific control, the controller can control the MOS tube in the boost circuit through the PWM control circuit. The controller is powered by an auxiliary power supply, the auxiliary power supply takes energy from the waste battery and the dump battery in parallel, only one of the waste battery and the dump battery has electric energy, the controller has a step-up/step-down adaptive function, and the controller is provided with a working power supply input after DC/DC conversion. In addition, the controller can also collect the terminal voltage u of the waste battery c1 Discharge current i of waste battery c1 Terminal voltage u of dump cell c2 Discharge current i of dump cell c2 Flows through MOS tube Q 1 Is the current i of (2) q1 And flow through MOS transistor Q 2 Is the current i of (2) q2 。
In the above-mentioned surplus energy recovery circuit of abandoned battery, under the control of the controller, the electric energy collection circuit is responsible for taking out the surplus energy in abandoned battery completely and thoroughly with high efficiency, MOS pipe Q 1 Boost inductance L during conduction 1 Energy storage MOS tube Q 1 Boost inductance L at turn-off 1 Releasing energy, and temporarily buffering the energy into an energy storage capacitor C; the electric energy transfer circuit is responsible for completely and thoroughly taking out the energy buffered in the energy storage capacitor C with high efficiency, and the MOS tube Q 2 Boost inductance L during conduction 2 Energy storage MOS tube Q 2 Boost inductance L at turn-off 2 Releasing energy and transferring the energy to a transfer battery. The energy storage capacitor C is used as an electric energy caching container, can cache the electric energy taken out from the waste battery for a short time, waits for the electric energy transfer circuit to be taken out, and has the function of enabling the electric energy collection circuit and the electric energy transfer circuit to work independently and can operate optimally according to respective requirements independently. In addition, in order to avoid the energy to charge the dump battery when the electric energy collection circuit works, the dump battery and the unidirectional isolation diode D can be used for the purpose of 2 A switch is connected in series between the two.
Because the electric energy collecting circuit and the electric energy transfer circuit are mutually independent, the control can be implemented by adopting mutually independent control methods. For example, the electric energy collecting circuit and the electric energy transfer circuit can both adopt a current control mode, and after energy buffering, the electric energy collecting circuit and the electric energy transfer circuit can independently work under the control of the controller. Therefore, the electric energy collection circuit can work in a mode of meeting the maximum power output condition of the waste battery, so that the electric energy collection of the waste battery is maximized, and the energy loss in the collection process is reduced. The electric energy transfer-storage stage circuit can work in a mode of optimizing the comprehensive performance of the transfer-storage battery and maximizing the transfer-storage power, ensures the safety and service life of the transfer-storage battery to be maximized, maximizes the transfer-storage power and reduces the energy loss in the transfer-storage process.
Because the electric energy collection circuit and the electric energy transfer circuit can adopt the existing control method in the prior art to realize respective control, the details are not repeated here.
Because the electric energy collecting circuit and the electric energy transferring circuit are connected by the electric energy buffer unit, the two circuits can respectively operate according to own rules. The electric energy collection circuit operates according to the rule of the maximum power output of the waste battery, and can maximize the collection efficiency of residual energy. The electric energy transfer circuit operates according to the optimization rule of the comprehensive performance of the transfer battery, and can optimize the comprehensive performance of the transfer battery. The invention can simultaneously consider the performances of the waste battery and the dump battery, such as maximization of the energy recovery efficiency of the waste battery and the optimal comprehensive performance of the dump battery, and avoid the contradiction between the energy recovery efficiency and the optimal performance of the dump battery and the damage of the electric energy recovery to the safety and the service life of the waste battery and the dump battery.
Claims (9)
1. The waste battery surplus energy recovery circuit is characterized by comprising an electric energy collection circuit, an electric energy buffer unit and an electric energy transfer circuit, wherein the electric energy collection circuit is a first DC/DC circuit, the electric energy transfer circuit is a second DC/DC circuit, and the electric energy collection circuit and the electric energy transfer circuit work independently; the input end of the electric energy collection circuit is used for being connected with the electric energy output end of the waste battery, the output end of the electric energy collection circuit is connected with the electric energy buffer unit, and the electric energy collection circuit works in a mode of meeting the maximum power output condition of the waste battery and is used for buffering the energy in the waste battery into the electric energy buffer unit; the input end of the electric energy transfer circuit is connected with the electric energy buffer unit, the output end of the electric energy transfer circuit is used for being connected with the transfer battery, and the electric energy transfer circuit works in a mode of optimizing the comprehensive performance of the transfer battery and maximizing the transfer power and is used for transferring the energy buffered in the electric energy buffer unit into the transfer battery.
2. The waste battery residual energy recovery circuit of claim 1, wherein the power buffer unit includes a storage capacitor.
3. The waste battery residual energy recovery circuit of claim 1 or 2, wherein the first DC/DC circuit and/or the second DC/DC circuit is a boost circuit.
4. The waste battery residual energy recovery circuit of claim 3, further comprising a controller, said controller controlling connection to said boost circuit.
5. The waste battery residual energy recovery circuit of claim 4, wherein the controller is controllably connected to the boost circuit via a PWM control circuit.
6. The waste battery residual energy recovery circuit of claim 4, further comprising an auxiliary power source, the auxiliary power source being electrically connected to the controller.
7. The waste battery residual energy recovery circuit of claim 3, wherein the boost circuit comprises a boost inductor, a control switch, and a unidirectional-on device; one end of the boost inductor is connected with the first input end of the boost circuit, the other end of the boost inductor is connected with the anode of the unidirectional conduction device, the cathode of the unidirectional conduction device is connected with the first output end of the boost circuit, the first conduction end of the control switch is connected with the connection ends of the boost inductor and the unidirectional conduction device, and the second conduction end of the control switch is respectively connected with the second input end and the second output end of the boost circuit.
8. The waste battery residual energy recovery circuit of claim 7, wherein the control switch is a MOS transistor.
9. The waste battery residual energy recovery circuit of claim 7, wherein the unidirectional conduction device is a unidirectional isolation diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077252.3A CN110994708B (en) | 2019-11-06 | 2019-11-06 | Waste battery residual energy recovery circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077252.3A CN110994708B (en) | 2019-11-06 | 2019-11-06 | Waste battery residual energy recovery circuit |
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| Publication Number | Publication Date |
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| CN110994708A CN110994708A (en) | 2020-04-10 |
| CN110994708B true CN110994708B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911077252.3A Active CN110994708B (en) | 2019-11-06 | 2019-11-06 | Waste battery residual energy recovery circuit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688406B (en) * | 2020-12-16 | 2023-11-14 | 维沃移动通信有限公司 | Energy harvesting circuit and electronic terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202651811U (en) * | 2012-03-16 | 2013-01-02 | 安徽理工大学 | Environmental-protection micro electric energy collection converter |
| CN104158248A (en) * | 2014-08-12 | 2014-11-19 | 中科宇图天下科技有限公司 | Device of a plurality of microbial fuel cells outputting energy jointly, and method of a plurality of microbial fuel cells outputting energy jointly |
| CN106026330A (en) * | 2016-06-22 | 2016-10-12 | 江苏大学 | Energy recovery and storage circuit of hybrid suspension of overall vehicle and control method of energy recovery and storage circuit |
-
2019
- 2019-11-06 CN CN201911077252.3A patent/CN110994708B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202651811U (en) * | 2012-03-16 | 2013-01-02 | 安徽理工大学 | Environmental-protection micro electric energy collection converter |
| CN104158248A (en) * | 2014-08-12 | 2014-11-19 | 中科宇图天下科技有限公司 | Device of a plurality of microbial fuel cells outputting energy jointly, and method of a plurality of microbial fuel cells outputting energy jointly |
| CN106026330A (en) * | 2016-06-22 | 2016-10-12 | 江苏大学 | Energy recovery and storage circuit of hybrid suspension of overall vehicle and control method of energy recovery and storage circuit |
Non-Patent Citations (1)
| Title |
|---|
| 微生物燃料电池的电能采集***;莫冰等;《光学精密工程》;1707-1711 * |
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| CN110994708A (en) | 2020-04-10 |
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