TW201406001A - Parallel charging and serial discharging method for lithium battery and device thereof - Google Patents
Parallel charging and serial discharging method for lithium battery and device thereof Download PDFInfo
- Publication number
- TW201406001A TW201406001A TW101127083A TW101127083A TW201406001A TW 201406001 A TW201406001 A TW 201406001A TW 101127083 A TW101127083 A TW 101127083A TW 101127083 A TW101127083 A TW 101127083A TW 201406001 A TW201406001 A TW 201406001A
- Authority
- TW
- Taiwan
- Prior art keywords
- battery
- charging
- control circuit
- circuit
- parallel
- Prior art date
Links
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
本發明係有關一種鋰電池並聯充電串聯放電之方法及其裝置，尤指一種於電池充電時，電池充電迴路接上電源後，會給予控制電路一充電訊號，進而使控制電路將電池之電連接切換為並聯，而形成電池充電迴路對電池進行並聯充電(3~4.2V)，當電池充電迴路未接上電源使控制電路未收到充電訊號時，控制電路會將電池之電連接切換為串聯，電池電壓將會疊加(6~8.4V)輸出至DC-DC降壓轉換器，轉換成所需要電壓輸出，而形成電池串聯放電輸出動作之鋰電池並聯充電串聯放電之方法及其裝置設計。 The invention relates to a method and a device for parallel charging and discharging of a lithium battery in parallel, in particular, when the battery is charged, the battery charging circuit is connected to the power supply, and then a charging signal is given to the control circuit, so that the control circuit electrically connects the battery. Switch to parallel, and form a battery charging circuit to parallel charge the battery (3~4.2V). When the battery charging circuit is not connected to the power supply and the control circuit does not receive the charging signal, the control circuit will switch the battery's electrical connection to series. The battery voltage will be superimposed (6~8.4V) output to the DC-DC buck converter, converted into the required voltage output, and the lithium battery parallel charging and series discharge method for forming the battery series discharge output action and its device design.
有鑑於現今移動式設備(手機，GPS，平板電腦等等…)皆使用5VUSB作為電源，並且電流需求日益增大，相較於鋰電池的容量也越來越大，行動電源的需求也日益增大。 In view of the fact that today's mobile devices (mobile phones, GPS, tablets, etc.) use 5VUSB as the power source, and the current demand is increasing, the capacity of the lithium battery is also increasing, and the demand for mobile power is increasing. Big.
目前習知的充電線路結構為5V對3.7V的鋰電池充電，然後再由3.7V升壓至5V輸出，如第四圖所示，這類型的迴路在大電流輸出(1A以上)會對電池造成較大的負擔。 At present, the conventional charging circuit structure is to charge a 5V to 3.7V lithium battery, and then boost from 3.7V to 5V output. As shown in the fourth figure, this type of circuit will have a large current output (above 1A). Cause a greater burden.
另一種習知之串聯充放電線路，如第五圖所示，5V輸入先經過升壓使之大過於串聯電壓值，由於單顆電池是不能過電壓(4.2V)，所以需再使用平衡充電線路(電壓平衡)來保護電池不會過充電，而會增加充電消耗，使得單位充電時間加長。 Another conventional series charge and discharge line, as shown in the fifth figure, the 5V input is boosted to be greater than the series voltage value. Since the single battery cannot be overvoltage (4.2V), the balanced charging line needs to be used again. (Voltage balance) to protect the battery from overcharging, which will increase the charging cost, making the unit charging time longer.
且習知充放電線路中均為升壓線路，而使用升壓線路對於電 池及電壓轉換特性如下： And the conventional charging and discharging lines are all boosting lines, and the boosting line is used for electricity. The pool and voltage conversion characteristics are as follows:
1、基於線路架構因素，降壓線路比升壓線路容易實現較高的轉換效率，並且在同樣的輸出電壓及電流下，降壓線路輸入電流較小，因此所需要的功率元件的耐電流也較小，相對成本亦會較小，且功率轉換線路所產生的熱亦會較小，升壓元件的耐電流需要5A，而降壓元件的耐電流只需要3A。 1. Based on the line architecture factor, the buck line is easier to achieve higher conversion efficiency than the boost line, and under the same output voltage and current, the input current of the buck line is small, so the current resistance of the required power component is also Smaller, the relative cost will be smaller, and the heat generated by the power conversion circuit will be smaller, the booster component needs 5A, and the buck component requires only 3A.
例一：效率皆為85%輸出5V2A Example 1: Efficiency is 85% output 5V2A
2、基於電池物理特性，放電電流較大會造成較大之電壓降，導致保護線路判定沒電。 2. Based on the physical characteristics of the battery, a large discharge current will cause a large voltage drop, resulting in the protection line being judged to be out of power.
例：假設電壓還有3.4V時，輸出電流0.5A電壓會降至3.3V，輸出電流2A時，電壓會降至3.1V， 輸出電流3A時，電壓會降至2.8V而使得保護線路啟動，然後關閉電池輸出。 Example: Assuming a voltage of 3.4V, the output current 0.5A will drop to 3.3V, and when the output current is 2A, the voltage will drop to 3.1V. When the output current is 3A, the voltage drops to 2.8V, causing the protection line to start and then turning off the battery output.
本發明人有鑑於上述習知鋰電池充放電電路之實用困難及有待改善之缺失，盼能提供一突破性之設計，以增進實用效果，乃潛心研思、設計組製，綜集其多年從事相關產品設計產銷之專業技術知識與實務經驗及研思設計所得之成果，終研究出本發明一種鋰電池並聯充電串聯放電之方法及其裝置，以提供使用者。 The present inventors have in view of the practical difficulties of the above-mentioned conventional lithium battery charging and discharging circuit and the lack of improvement, and hope to provide a breakthrough design to enhance the practical effect, which is devoted to research and design, and has been engaged for many years. The professional technical knowledge and practical experience of the related product design and production and the results obtained from the research and design have finally developed a method and a device for parallel charging and series discharge of the lithium battery of the present invention to provide users.
本發明係根據電池及電壓轉換特性，基於並聯充電的便利及串聯放電的優勢，設計出一個並聯充電串聯放電的切換系統，此一系統能提高電池之有效利用率，減少元件消耗並且能輸出更大的電流及提供穩定的輸出。 The invention designs a switching system of parallel charging series discharge according to battery and voltage conversion characteristics, based on the convenience of parallel charging and the advantages of series discharge, the system can improve the effective utilization of the battery, reduce component consumption and output more. Large current and stable output.
1、提高輸出效率。 1. Improve output efficiency.
2、能得到更大的輸出電流。 2, can get a larger output current.
3、同樣的電流輸出，只需較小耐電流的功率元件。 3. The same current output requires only a small current-resistant power component.
4、不需要去擔心充電時的電壓平衡。 4, do not need to worry about the voltage balance during charging.
5、更穩定的輸出。 5. More stable output.
為使 貴審查委員能更了解本發明之結構特徵及其功效，茲配合圖式並詳細說明於后。 In order to enable the reviewing committee to better understand the structural features and the efficacy of the present invention, the drawings will be described in detail and will be described in detail later.
請參閱第一圖、第二圖及第三圖所示，本發明係有關一種鋰電池並聯充電串聯放電之方法及其裝置，其主要方法係於電池充電時，電池充電迴路(2)接上電源後，會給予控制電路(1)一充電訊號，進而使控制電路(1)將電池(4)之電連接切換為並聯，而形成電池充電迴路(2)對電池(4)進行並聯充電(3~4.2V)，當電池充電迴路(2)未接上電源使控制電路(1)未收到充電訊號時，控制電路(1)會將電池(4)之電連接切換為串聯，電池(4)電壓將會疊加(6~8.4V)輸出至DC-DC降壓轉換器(3)，轉換成所需要電壓輸出，而形成電池(4)串聯放電輸出動作，以兩個電池(4)串並聯為例，本發明主要裝置包括控制電路(1)及並聯於控制電路(1)之電池充電迴路(2)及DC-DC降壓轉換器(3)，其中該控制電路(1)包括充放電控制器(11)及一組以上分別控制每一電池(4)電連接方式之電路切換元件(12)，當電池充電迴路(2)接上電源後，會給予控制電路(1)一充電訊號，進而使控制電路(1)中之充放電控制器(11)來控制電路切換元件(12)將電池(4)之電連接切換為並聯充電，當電池充電迴路(2)未接上電源使控 制電路(1)未收到充電訊號時，控制電路(1)中之充放電控制器(11)來控制電路切換元件(12)將電池(4)之電連接切換為串聯，使電池(4)電壓將會疊加(6~8.4V)輸出至DC-DC降壓轉換器(3)，轉換成所需要電壓輸出，而形成電池(4)串聯放電輸出動作。 Referring to the first, second and third figures, the present invention relates to a method and a device for parallel charging and discharging of a lithium battery in parallel. The main method is when the battery is charged, and the battery charging circuit (2) is connected. After the power supply, the control circuit (1) is given a charging signal, so that the control circuit (1) switches the electrical connection of the battery (4) into parallel, and forms a battery charging circuit (2) to charge the battery (4) in parallel ( 3~4.2V), when the battery charging circuit (2) is not connected to the power supply so that the control circuit (1) does not receive the charging signal, the control circuit (1) switches the battery (4) electrical connection to the series, the battery ( 4) The voltage will be superimposed (6~8.4V) output to the DC-DC buck converter (3), converted into the required voltage output, and the battery (4) series discharge output action, with two batteries (4) In series and parallel connection, the main device of the present invention comprises a control circuit (1) and a battery charging circuit (2) and a DC-DC buck converter (3) connected in parallel to the control circuit (1), wherein the control circuit (1) comprises a charge and discharge controller (11) and a plurality of circuit switching elements (12) for controlling the electrical connection mode of each battery (4), respectively, when the battery charging circuit (2) After the power is connected, a control signal (1) is given to the charging circuit, so that the charging and discharging controller (11) in the control circuit (1) controls the circuit switching component (12) to switch the electrical connection of the battery (4) to Parallel charging, when the battery charging circuit (2) is not connected to the power supply to control When the circuit (1) does not receive the charging signal, the charging and discharging controller (11) in the control circuit (1) controls the circuit switching element (12) to switch the electrical connection of the battery (4) into a series connection, so that the battery (4) The voltage will be superimposed (6~8.4V) output to the DC-DC buck converter (3), converted into the required voltage output, and the battery (4) series discharge output action will be formed.
其中之充放電控制器(11)係可為IC或晶體電路所構成，電路切換元件(12)係可為開關晶體或繼電器。 The charge and discharge controller (11) may be an IC or a crystal circuit, and the circuit switching element (12) may be a switch crystal or a relay.
綜上所述，本發明具提高電池之有效利用率，減少元件消耗並且能輸出更大的電流及提供穩定的輸出功效，為一甚具新穎性、進步性及可供產業上應用之發明，實已符合發明專利之給予要件，爰依法提出專利申請，尚祈 貴審查委員能詳予審查，並早日賜准本案專利，實為德便。 In summary, the invention has the advantages of improving the effective utilization rate of the battery, reducing the component consumption, and outputting a larger current and providing a stable output effect, and is an invention which is novel, progressive, and applicable to the industry. It has already met the requirements for the invention patents, and has filed a patent application in accordance with the law. The members of the review committee can review it in detail and give the patent in this case as soon as possible.
唯以上所述者，僅為本發明所舉之其中較佳實施例，當不能以之限定本發明之範圍，舉凡依本發明申請專利範圍所作之均等變化與修飾，皆應仍屬本發明專利涵蓋之範圍內。 The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent variation and modification according to the scope of the present invention should still belong to the present invention. Within the scope of coverage.
(1)‧‧‧控制電路 (1)‧‧‧Control circuit
(11)‧‧‧充放電控制器 (11)‧‧‧Charge and discharge controller
(12)‧‧‧電路切換元件 (12)‧‧‧Circuit switching components
(2)‧‧‧電池充電迴路 (2) ‧‧‧Battery charging circuit
(3)‧‧‧DC-DC降壓轉換器 (3) ‧‧‧DC-DC Buck Converter
(4)‧‧‧電池 (4) ‧‧‧Battery
第一圖係本發明電池並聯充電時之控制電路圖。 The first figure is a control circuit diagram of the battery of the present invention when charged in parallel.
第二圖係本發明電池串聯放電輸出時之控制電路圖。 The second figure is a control circuit diagram of the battery in series discharge output of the present invention.
第三圖係本發明之方塊圖。 The third figure is a block diagram of the present invention.
第四圖係習知充放電線路結構方塊圖。 The fourth figure is a block diagram of a conventional charging and discharging circuit structure.
第五圖係另一種習知之串聯充放電線路結構方塊圖。 The fifth figure is a block diagram of another conventional series charge and discharge line structure.
(1)‧‧‧控制電路 (1)‧‧‧Control circuit
(11)‧‧‧充放電控制器 (11)‧‧‧Charge and discharge controller
(12)‧‧‧電路切換元件 (12)‧‧‧Circuit switching components
(2)‧‧‧電池充電迴路 (2) ‧‧‧Battery charging circuit
(3)‧‧‧DC-DC降壓轉換器 (3) ‧‧‧DC-DC Buck Converter
(4)‧‧‧電池 (4) ‧‧‧Battery
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101127083A TW201406001A (en) | 2012-07-27 | 2012-07-27 | Parallel charging and serial discharging method for lithium battery and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101127083A TW201406001A (en) | 2012-07-27 | 2012-07-27 | Parallel charging and serial discharging method for lithium battery and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW201406001A true TW201406001A (en) | 2014-02-01 |
Family
ID=50550169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101127083A TW201406001A (en) | 2012-07-27 | 2012-07-27 | Parallel charging and serial discharging method for lithium battery and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TW201406001A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309397A (en) * | 2017-07-28 | 2019-02-05 | 西安中兴新软件有限责任公司 | A kind of mobile power source |
| TWI676334B (en) * | 2017-10-19 | 2019-11-01 | 富晶電子股份有限公司 | A device and a method of switches for charging and discharging lithium battery |
| CN112952968A (en) * | 2021-04-21 | 2021-06-11 | 五羊—本田摩托（广州）有限公司 | Electricity storage device and electric vehicle power supply system comprising same |
-
2012
- 2012-07-27 TW TW101127083A patent/TW201406001A/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109309397A (en) * | 2017-07-28 | 2019-02-05 | 西安中兴新软件有限责任公司 | A kind of mobile power source |
| CN109309397B (en) * | 2017-07-28 | 2024-05-14 | 西安中兴新软件有限责任公司 | Mobile power supply |
| TWI676334B (en) * | 2017-10-19 | 2019-11-01 | 富晶電子股份有限公司 | A device and a method of switches for charging and discharging lithium battery |
| CN112952968A (en) * | 2021-04-21 | 2021-06-11 | 五羊—本田摩托（广州）有限公司 | Electricity storage device and electric vehicle power supply system comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015117515A1 (en) | Charge/discharge circuit and corresponding mobile terminal | |
| US9711975B2 (en) | Power bank circuit and the method thereof | |
| CN104901354A (en) | Battery system and power device provided with battery system | |
| JP2012524516A5 (en) | ||
| CN106464005A (en) | Uninterruptible power supply unit | |
| CN204407954U (en) | Multiinputoutput fills portable power source soon | |
| CN106464006A (en) | Uninterruptible power-supply system | |
| US11588391B1 (en) | Power conversion structure, system, method, electronic device including power conversion structure, and chip unit | |
| CN112968481B (en) | Charging circuit and electronic device | |
| CN103825294A (en) | Energy storage inverter suitable for distributed new energy electric power | |
| TW201406001A (en) | Parallel charging and serial discharging method for lithium battery and device thereof | |
| CN204376508U (en) | A kind of quick-charging circuit | |
| JP2016036239A (en) | Battery capable of quick charge with low voltage | |
| CN109309397B (en) | Mobile power supply | |
| WO2016090852A1 (en) | Terminal device battery and method for control of charge and discharge thereof | |
| CN203166552U (en) | Mobile power supply | |
| CN116707051B (en) | Dual-battery charge-discharge circuit, dual-battery charge-discharge method, electronic device and medium | |
| CN104052091A (en) | Novel battery management architecture capable of charging in subareas and discharging in series areas | |
| CN204103559U (en) | A kind of power circuit | |
| CN203911511U (en) | Parallel charging circuit for multiple lithium batteries | |
| CN207652058U (en) | A kind of charging unit and electronic equipment | |
| CN110892603A (en) | Battery control circuit, battery and unmanned aerial vehicle | |
| CN201450084U (en) | Usb multifunctional battery | |
| CN201947182U (en) | Bi-directional DC/DC (direct current to direct current) power supply | |
| CN201742123U (en) | Notebook computer battery charger |