^ M327597 八、新型說明： 【新型所屬之技術領域】 本新型是有關於一種混合供電電路，且特別是有關於 一種應用於LED交通號諸之混合供電電路。 【先前技術】 目前常見的交通號誌係採用白熾燈為光源，雖然價格 便宜，但其壽命短，耗電量大，且在白熾鎢絲燈泡壞掉以 前，其亮度會因燈絲上蒸發出來之鎢原子沉積於玻璃内側 而逐漸降低，故壽命與耗能已漸不符合能源效益。由於發 光二極體（Light Emitting Diode，LED)之交通號誌燈壽命長 (通常約8〜10年），耗電量低（約為丨5界），大概約為現有白 熾燈耗電量的十分之一，因此歐、美、日等先進國家之交 通號諸，莫不積極開始以LED燈取代白熾燈。 由於太1%光取之不盡、用之不竭，此外又無污染，加 上近年來太陽能電池之積極研究發展，已可達相當高的效 率，因此已有將其應用在路燈、警告標誌等，但是尚未見 著將其使用於LED交通號誌。一般常見以太陽能供電的作 法係直接以定電流的方式對蓄電池充電，但是由於太陽能 板之輸出電壓與輸出電流特性受溫度及照度之影響極 大’所以必須根據太陽能板所產生的電力自動調節輸出， 使其與負載配合以達到最大功率輸出。 目前所見之交通號誌皆為單一供電方式，一旦發生停 電事故’將使得各地區道路交通號諸指示功能完全喪失， 6^ M327597 VIII. New Description: [New Technology Field] The present invention relates to a hybrid power supply circuit, and in particular to a hybrid power supply circuit for LED traffic signals. [Prior Art] At present, the common traffic number uses incandescent lamps as the light source. Although the price is cheap, its life is short and the power consumption is large. Before the incandescent tungsten filament bulb is broken, its brightness will be evaporated due to the filament. The tungsten atoms are deposited on the inside of the glass and gradually decrease, so the life and energy consumption are gradually not in line with energy efficiency. Since the traffic light of the Light Emitting Diode (LED) has a long life (usually about 8 to 10 years), the power consumption is low (about 界5 circles), which is about the power consumption of the existing incandescent lamp. One tenth, so the traffic numbers of advanced countries such as Europe, America and Japan are not actively starting to replace incandescent lamps with LED lights. Because too much 1% of the light is inexhaustible, inexhaustible, and there is no pollution, coupled with the active research and development of solar cells in recent years, it has reached a very high efficiency, so it has been applied to street lamps and warning signs. Wait, but have not seen it used in the LED traffic sign. Generally, the solar power supply method directly charges the battery in a constant current manner. However, since the output voltage and output current characteristics of the solar panel are greatly affected by temperature and illuminance, it is necessary to automatically adjust the output according to the power generated by the solar panel. It is mated with the load to achieve maximum power output. The traffic signs that we have seen so far are all a single power supply method. In the event of a power outage, the road traffic number indication function in each area will be completely lost. 6
.M327597 造成嚴重之交通安全威脅。 【新型内容】 本新型的目的是在楹也 ^ 電電路，經由控制電路之斷_具有太陽能之混合型供 樣化的提供負載電力切換供電模式，可多 Λ徒呵供電之可靠度。 本新型的另一目的是在 型供雷雷政，處田檀具有太％能之混合 二：交通號諸，使其以太陽能與市電 ==電’並配合蓄電池儲能作為緊急電源，以提供 、准人貝在不預塾《 >(意φ 夕丨 个孭s 1τ电下多些修復時間。 脖新型—較佳實施狀—種具#太陽能之混合 型供電電路，包含有-第-供電單元、-第二供電單元、 itm«置以及—蓄電裝置並連接於 裝置以供應其電力。 ^ 該第-供電單元所產生之訊號，經由該控制裝置用以 ㈣該充電裝置，使該第—供電單元透過該充電裝置對該 蓄，裝置進行充電。該蓄電裝置所產生之訊號，經由該控 制裝置用以控制該第二供電單元加入供電給該蓄電裝置 之守機°玄負載裝置連接於該蓄電裝置吸收其所需之電 力0 其中该第一供電單元包含一太陽能模組、一最大功率 追蹤裝置及一第一開關。該太陽能模組係用以接收太陽光 能，並將其轉換為電能，作為主要供電來源。該最大功率 追縱裝置包含有一電流感測器與一第一電壓感測器，係用 一電壓訊號。該 並受控制裝置之 電裝置連接或斷 電源轉換裝置及.M327597 poses a serious traffic safety threat. [New content] The purpose of this new type is to switch the power supply mode of the load power through the control circuit and the hybrid power supply with solar energy, which can provide more reliable power supply. Another purpose of this new type is to supply Lei Leizheng in the form, and Tian Tan has a mix of too much energy: the traffic number, so that it uses solar energy and utility power == electricity' and cooperates with battery energy storage as an emergency power source to provide , the prospective person is not pre-emptive " > (meaning φ 丨 丨 孭 1 s 1τ electric more repair time. The neck new - better implementation - the type of equipment - solar hybrid power supply circuit, including - the first a power supply unit, a second power supply unit, an itm«, and a power storage device are connected to the device to supply its power. ^ The signal generated by the first power supply unit is used by the control device to (4) the charging device - the power supply unit charges the device through the charging device. The signal generated by the power storage device is controlled by the control device to control the second power supply unit to add power to the power storage device. The power storage device absorbs the required power 0. The first power supply unit includes a solar module, a maximum power tracking device, and a first switch. The solar module is configured to receive solar energy, and Converting it into electrical energy as the main source of power supply. The maximum power tracking device comprises a current sensor and a first voltage sensor, and a voltage signal is used. The electrical device of the control device is connected or disconnected from the power supply. Conversion device and
，M327597 以分別擷取該太陽能模組之電流訊號與第 第一開關係連接於該最大功率追縱裝置， 控制而動作，使該第一供電單元與該充 開。 w苐_供電單元包含一市電電源 一第二開關。該電源轉換裝置用以將該市電電源之： 源轉換，直流電源。該第二開關係連接於該電源轉㈣ 置並又控制裝置之控制而動作，使該第二供条 蓄電裝置連接或斷開。 …與該 該充電裝置連接於該第-供電單元，並包含一升 換裝置。該升壓轉換裝置係用以將第—供電單元所輸出之 直流電壓作-提升，用以提供f電裝置及負载裝置所需之 直抓電塵。該升壓轉換裝置同時受到控制裝置之控制，由 最大功率追縱裝置所擷取之第一㈣訊號與電流訊號，送 入控制裝置計算出功率，以決定所要送出之脈寬調變控制 訊號給升壓轉換裝置之電晶體開關，使第—供電單元藉由 充電裝置以最大功率追蹤控制方式對蓄電裝置充電：對 負載裝置供電。 控制裝置包含一微電腦控制裝置。該微電腦控制裝 置依據所擷取之太陽能模組之第—電屢訊號與電流訊號 及蓄電裝置之第二電壓訊號，經由内部程式加以運算及判 斷’用以控制第-開關、第二開關及第三開關，進而控制 第ί、電單元及第一供電單元加入供電之時機，以及負載 裝置切離蓄電裝置之時機。 8 ，M327597 人，：裝置與該充電裝置及該第二供電單元連接，並包 #蓄電杈組、一第二電壓感測器及一第三開關。該蓄電 杈組用以儲存該第一供電單元經由該充電裝置與第二供 電：兀所：供之電力。該第二電壓感測器，用以擷取該蓄 ^ '、、、之苐一電壓訊號。該第三開關係用以連接該蓄電裝 置與該負載裝置，並受控制裝置之控制而動作。其中該負 載裝置用以接收該蓄電裝置所提供之電力。 【實施方式】 i請參照第1圖及第2圖，其繪示分別為本新型一較佳 貫施例的-種具有太陽能之混合型供電電路之方塊圖與 電=圖。此混合供電電路100包含一第—供電單元11〇、 -弟二供電單元120、一充電裝置13〇、—控制裝置1仙 蓄電裝請，並連接於一負載裝置16〇以供應其 電力。 ㈣：：新型一較佳實施例中，該混合供電電路氣經由 玉哀0榻取第一供電單元110以及蓄電裝置150之 訊號，以控制該第-供電單元i ισ和該第二供電單元咖 :應=以及控制該蓄電裝置15。切離負載裝置_ 機，同日劍充電裝置130,使該第—供電單& 在最大功率輸出之狀態下提供電力。 、夺 第一供電單元110包含一太陽能模組、一 率:縱裝置112及-第-開關113。在本實施例;取= /、電WU0為提供電力之主要來源’且所輪出之電堡The M327597 is connected to the maximum power tracking device by the current signal and the first open relationship of the solar module, and is controlled to operate to enable the first power supply unit to be charged. w苐_The power supply unit contains a mains power supply and a second switch. The power conversion device is used to: convert the source of the utility power to a source of direct current power. The second open relationship is connected to the power supply (four) and is controlled by the control device to connect or disconnect the second supply storage device. ...the charging device is connected to the first power supply unit and includes a switching device. The boost converter is used to boost the DC voltage outputted by the first power supply unit to provide the direct electric dust required for the electric device and the load device. The boost converter device is simultaneously controlled by the control device, and the first (four) signal and current signal captured by the maximum power tracking device are sent to the control device to calculate the power to determine the pulse width modulation control signal to be sent. The transistor switch of the boost converter device causes the first power supply unit to charge the power storage device by the charging device in a maximum power tracking control mode: powering the load device. The control device includes a microcomputer control device. The microcomputer control device calculates and judges by using an internal program based on the first electrical signal of the selected solar module and the current signal and the second voltage signal of the power storage device to control the first switch, the second switch, and the second The three switches, in turn, control the timing at which the ί, the electric unit, and the first power supply unit are added to the power supply, and the timing at which the load device is disconnected from the power storage device. 8 , M327597 person: the device is connected to the charging device and the second power supply unit, and includes a power storage group, a second voltage sensor and a third switch. The power storage unit is configured to store the first power supply unit via the charging device and the second power supply: the power supply. The second voltage sensor is configured to capture a voltage signal of the ', ', and . The third open relationship is for connecting the power storage device and the load device and is controlled by the control device. The load device is configured to receive power provided by the power storage device. [Embodiment] Please refer to FIG. 1 and FIG. 2 for a block diagram and an electric diagram of a hybrid power supply circuit having solar energy, respectively, which is a preferred embodiment of the present invention. The hybrid power supply circuit 100 includes a first power supply unit 11A, a second power supply unit 120, a charging device 13A, a control device, and is connected to a load device 16 to supply power. (4): In a new preferred embodiment, the hybrid power supply circuit controls the first power supply unit i ισ and the second power supply unit via the signal of the first power supply unit 110 and the power storage device 150. : Should = and control the power storage device 15. The load-off device _ machine, the same day sword charging device 130, enables the first power supply unit & to provide power in the state of maximum power output. The first power supply unit 110 includes a solar module, a rate: a vertical device 112 and a - first switch 113. In this embodiment; taking = /, electric WU0 is the main source of power supply' and the electric bunker
' M327597 約在1 7〜20伏特之間。該太陽能模組} 1丨係依所需之電壓 與電流由複數個太陽能板經由串聯、並聯及串並聯組合而 成。該最大功率追蹤裝置112包含有一電流感測器與一第 一電壓感測器，係用以分別擷取該太陽能模組111之電流 Λ號/、第黾壓汛號。其中，在本實施例中，該第一電壓 感測器係採用兩電阻分壓之方式來取得電壓。該第一開關 113連接於最大功率追蹤裝置112，並受控制裝置14〇之控 制而動作。 第二供電單元12〇包含一市電電源121、一電源轉換 装置122及—第二開關123。在本實施例+，該市電電源 121為電力公司系統所提供之交流電源，該交流電源可為 110或220伏特且頻率為6〇赫茲（Ηζ)。該電源轉換裝置 122係為一反馳式電源轉換器用以 將該市電電源121之交流電源轉換為f電裝置15()盘負載 裝置⑽所需之24伏特直流電源。該第二㈣123連接 該電源轉換裝置122,並受控制裝置⑷之控制而動作。 該第二供電單$ 120為一備用電源’當控制裝置140债測 到第-供電單元11〇與蓄電裝置15〇無法供電時，該第二 供電單元120會提供電力對蓄電裝 人 載裝置16。所需之電力。以置150充電，並提供負 ”裝置13〇包含一升壓轉換裝£ 131。 中，該升壓轉換裝置131為-直流對直流升壓轉換器(DC to DC Boost Converter)，係用以將第一 Λ , ，、電早兀 110 所輸 伙特之直肌电昼作—提升，以滿足蓄電裝置150 10 M327597 6G所需之24伏特直流電壓。該升壓轉換裝 置31同日寸受到控制裳置刚之控制，由最大功率追蹤裝 置掏取之第一電摩訊號與電流訊號，送入控制裝置 τ出力帛卩决疋所要送出之脈寬調變控制訊號給 [換破置131之電晶體開關，使第一供電單元㈣藉 由充電裝置130以最大功率追縱控制方式對 充電及對負載裝置160供電。 在本實施例中，採用擾動觀察法來進行太陽能模組 U1之最大輸出功率追蹤控制，其藉由升壓轉換裝置Ur :期，地增加或減少蓄電裝置15〇充電電流的大小，以改 變域能模組⑴的端電M及輸出功率，並觀察和比較蓄 電放置150充電電流變動前後之太陽能模組i 11輸出電壓 及輸出功率的變化情形，以決定下一步升壓轉換裝置i3i 中功率電晶體之脈寬調變信號責任週期的增加或減少。 控制裝置140包含一微電腦控制裝置141。在本實施 例中，錢電腦控制裝^ 141為―由賽普微系統^沖簡 吣⑽System )公司生產之可程式化系統晶片 曰(Pr0grammable System 〇n Chip，ps〇c )。此可程式化系統 ，片中内建了許多電路設計上常用的元件，如··脈寬調變 态（Pulse Width Modulation，PWM )、計數器、計時器、放 濾波器、類比/數位轉換器、數位/類比轉換器及隨 機信號等。本實施例使用可程式m日日片巾< pwMi6 元件來產生脈寬調變信號，另外還使用到ADCINci2元件 將類比信號轉為數位信號。 11 ' M327597 因此在本實施例中，透過三組ADCINC12元件分別擷 取太陽能模組1U之輸出電壓訊號和電流訊號，以及蓄電 裝置151之端電壓訊號，而pWM16元件則是經由 算後，再將PWM信號輸出，用以控制升塵轉換裝置\31 之電晶體開關導通時間。 。。蓄電裝置150包含一蓄電模，組151、一第二電壓感測 器m及一第三開關153。在本實施例中，該蓄電模組⑸ 可由複數個蓄電池，依所需供電時間之長短、體積大小等 考量因素，加以串聯、並聯及串並聯組合而成。該第二電 壓感測器i52,係用以擷取該蓄電模組151之第二電塵气 ^在本新型-較佳實施例中，該第二電㈣測器係採用 =電阻㈣之方式來取得電遂。該第三_ US連接㈣ 弟電壓感測器152與負載裝置⑽之間，並受控制裝置 4 0之控制而動作。盆中琴g截 號結裝置。 負載以16°，*—咖交通 之控制裝置141 ’依據所擷取之太陽能模組⑴ 輪=-電愿訊號與電流訊號及蓄電裝置i5i端電麼之 ::訊號’經由内部程式加以判斷，用以控制第-開 3、弟一開關123及第三開關153， 單元11。及第二供電單元120加入#電=制"電 裝置⑽切離之時機。 U之日守機’以及負載 在本實施例中，微電腦控制裝置 為當升壓轉換震置131所提升 之内隸式判斷 £ 15〇 電辽無法繼續提供蓄電裝 “電或是負載裝置160所需之電力時，則透過 12 、M327597 第一開關113作為第-供電單元11G連接充電裝置130之 控制開關，使充電裝置130可切離第一供電單$ ιι〇，直 到第一供電單元110輸出電壓值達第一預設值（15V)時 再使供電單元UQ與充電裝置13G連接。而第-開關 113畊開後’會由蓄電裝置i 5〇的蓄電模组⑸繼續對負 載裝置160供電，當f電模組151放電至低於第二預設值 (22V)時，就必須使第二開關123導通讓市電電源i2i 經電源轉換裝置122並聯供電。 另外，當蓄電模組151充電將近第三預設值（28v) 日守，為避免蓄電模組151過充以確保其壽命，因此亦可透 過第-開M 113斷開第一供電單元110，使其不再對蓄電 裝置150充電。 若連、’、ί陰雨天使彳于太陽能模組111無法對蓄電模組 151作足夠之充電，甚至連市電電源12丨也發生停電時， 將使得蓄電模組151之電壓位準降低，#其低於第四預設 值（21V)日可’為了避免蓄電模組151過度放電，所以必 須適時的將蓄電裝置15〇切離負載裝置16〇，以延長蓄電 模組151的壽命。因此設置了第三Μ 153，當第三開關 153切離後，蓄電模組151因而停止放電，直到當市電電 源121之電力恢復或是太陽能模組iu提供之電源對蓄電 模組151充電至高於第五預設值（24v)日寺，才再將第三 開關153導通恢復對負載裝置16〇供電。 雖然本新型已以一較佳實施例揭露如上，然其並非用 以限定本新型，任何㈣此技藝者，在不脫離本新型之精 13 M327597 神和範圍内，當可作各種之更動盘 > μ , F 口裡之更勁與濶飾，因此本新型之保 濩範圍當視後附之申請專利範圍所界定者為準。 【圖式簡單說明】 &為讓本新型之上述和其他目的、特徵、優點與實施例 旎更明顯易懂，所附圖式之詳細說明如下·· 4第1圖係缚示依照本新型—較佳實施例的_種具有太 陽能之混合型供電電路之方塊圖。 第2圖係繪示第i圖中混合型供電電路之電路圖。 【主要元件符號說明】 1 〇〇 ·混合供電電路 m·太陽能模組 113:第一開關 121 :市電電源 123 :第二開關 131:升壓轉換裝置 141 :微電腦控制裝置 151:蓄電模組 153:第三開關 110 第一供電單元 112 最大功率追蹤褒置 120 第二供電單元 122 電源轉換裝置 130 充電裝置 140 控制裝置 150 蓄電裝置 152 •第一電壓感測器 160 :負載裝置 14'M327597 is between 1 7 and 20 volts. The solar module is composed of a plurality of solar panels connected in series, in parallel, and in series and parallel according to the required voltage and current. The maximum power tracking device 112 includes a current sensor and a first voltage sensor for respectively capturing the current Λ/, 黾 汛 of the solar module 111. In the embodiment, the first voltage sensor adopts two resistors to divide the voltage to obtain the voltage. The first switch 113 is coupled to the maximum power tracking device 112 and is controlled by the control device 14A. The second power supply unit 12A includes a mains power supply 121, a power conversion device 122, and a second switch 123. In the present embodiment, the commercial power source 121 is an AC power source provided by the power company system, and the AC power source may be 110 or 220 volts and have a frequency of 6 Hz. The power conversion device 122 is a flyback power converter for converting the AC power of the commercial power source 121 into a 24 volt DC power source required for the disk device (10). The second (four) 123 is connected to the power conversion device 122 and is controlled by the control device (4). The second power supply unit $120 is a backup power supply. When the control device 140 detects that the first power supply unit 11 and the power storage device 15 are unable to supply power, the second power supply unit 120 provides power to the power storage device. . The power required. The device is charged at 150 and provides a negative "device 13" including a boost converter. 131. The boost converter 131 is a DC to DC Boost Converter. The first Λ , , , 电 兀 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 110 After the control, the first electric motor signal and the current signal captured by the maximum power tracking device are sent to the control device τ to output the pulse width modulation control signal to be sent to the transistor. The switch enables the first power supply unit (4) to supply power to the load device 160 by the charging device 130 in a maximum power tracking control mode. In this embodiment, the maximum output power tracking of the solar module U1 is performed by using the disturbance observation method. Control, which increases or decreases the magnitude of the charging current of the power storage device 15 by the boost converter Ur: to change the terminal power M and the output power of the domain energy module (1), and observe and compare the power storage 150 charging The change of the output voltage and the output power of the solar module i 11 before and after the flow change determines the increase or decrease of the duty cycle of the pulse width modulation signal of the power transistor in the next step of the boost converter i3i. The control device 140 includes a microcomputer. The control device 141. In the present embodiment, the money computer control device 141 is a programable system chip (Pr0grammable System 〇n Chip, ps〇c) manufactured by the Saip Microsystems (10) System. This programmable system has many components commonly used in circuit design, such as Pulse Width Modulation (PWM), counters, timers, discharge filters, analog/digital converters, Digital/analog converters, random signals, etc. This embodiment uses a programmable m-day wiper <pwMi6 component to generate a pulse width modulation signal, and an ADCINci2 component to convert an analog signal into a digital signal. 11 ' M327597 Therefore, in the embodiment, the output voltage signal and the current signal of the solar module 1U and the voltage of the terminal of the power storage device 151 are respectively captured by the three sets of ADCINC12 components. No., and the pWM16 component outputs the PWM signal after the calculation to control the on-time of the transistor switch of the dust-removing converter device\31. The power storage device 150 includes a storage module, a group 151, and a second voltage. The sensor m and a third switch 153. In this embodiment, the power storage module (5) can be connected in series, parallel, and series-parallel according to a plurality of batteries according to the length and volume of the required power supply time. The second voltage sensor i52 is configured to capture the second electric dust gas of the power storage module 151. In the novel-better embodiment, the second electric (four) detector adopts a = resistance (four) The way to get electricity. The third_US connection (four) is between the voltage sensor 152 and the load device (10) and is controlled by the control device 40. Potted piano g-cut knot device. The load is controlled by 16°, *- coffee traffic control device 141 'based on the selected solar module (1) wheel = - electricity signal and current signal and power storage device i5i terminal:: signal 'by internal program to judge, It is used to control the first-open, the third-switch 123 and the third switch 153, the unit 11. And the second power supply unit 120 joins the timing of the #电=制" electric device (10). In the present embodiment, the microcomputer control device is within the boost of the boost conversion oscillator 131. When the power is required, the first switch 113 of the M327597 is used as the first power supply unit 11G to connect the control switch of the charging device 130, so that the charging device 130 can be switched away from the first power supply unit $ ιι〇 until the first power supply unit 110 outputs When the voltage value reaches the first preset value (15V), the power supply unit UQ is connected to the charging device 13G. After the first switch 113 is ploughed, the power storage module (5) of the power storage device i 5〇 continues to supply power to the load device 160. When the f-electric module 151 is discharged below the second preset value (22V), the second switch 123 must be turned on to allow the mains power supply i2i to be powered in parallel via the power conversion device 122. In addition, when the power storage module 151 is charged The third preset value (28v) is used to prevent the power storage module 151 from being overcharged to ensure its life. Therefore, the first power supply unit 110 can be disconnected through the first open M 113 so that the power storage device 150 is no longer charged. If even, ', ί rain Therefore, the solar module 111 cannot be sufficiently charged to the power storage module 151, and even when the mains power supply 12 停 is powered off, the voltage level of the power storage module 151 is lowered, and # is lower than the fourth preset value. (21V), in order to avoid excessive discharge of the power storage module 151, it is necessary to cut the power storage device 15 away from the load device 16〇 in time to extend the life of the power storage module 151. Therefore, the third 153 153 is provided. After the three switches 153 are separated, the power storage module 151 stops discharging until the power of the commercial power source 121 is restored or the power supplied by the solar module iu charges the power storage module 151 to a higher than a fifth preset value (24v). Then, the third switch 153 is turned on to restore the power supply to the load device 16 . Although the present invention has been disclosed in a preferred embodiment as above, it is not intended to limit the present invention, and any (4) skilled person may not deviate from the present invention. 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 . 【figure BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. A block diagram of a hybrid power supply circuit with solar energy of the embodiment. Fig. 2 is a circuit diagram of the hybrid power supply circuit of Fig. i. [Description of main component symbols] 1 混合·hybrid power supply circuit m·solar mode Group 113: First switch 121: Mains power supply 123: Second switch 131: Boost conversion device 141: Microcomputer control device 151: Power storage module 153: Third switch 110 First power supply unit 112 Maximum power tracking device 120 Second Power supply unit 122 power conversion device 130 charging device 140 control device 150 power storage device 152 • first voltage sensor 160: load device 14