經濟部中央標準局員工消費合作社印製 Α7 Β7 五、發明説明（1) 本發明係有親於一自動電池充電電壓控制電路。 一電池充電電壓控制電路通常被提供於一車上電池與 在相關內燃發電機内被致動之一自動ACG(AC發電機）間 ，且車上設備的各式工作件係被該電池與（或）該ACG所 供電。典型而言，就算該電池因某些原因被完全放電或切 斷，其必須能持鏞車輛之操作。 第4圖顯示之電路係機車用之習知慣用的電池充電電 壓控制電路，其被併有一措施以防電池切斷。在第4圔中 ，ACG1被改造Μ被圖中未顯示之内燃發動機致動，且ACG1 之電懕輸出接頭被連接於一電池充電電壓控制電路12之充 電接頭。 為電池充電電壓控制電路作用成電壓輪出接頭之電池 接頭ΒΤ被連接於一斷續繼電器3、一停車燈與一點火控制 電路CDI (這些為車上設備之例），Μ及被連接於一電池 4。該斷續繼電器3被連接於左、右方向燈，且該等方向 燈任一可被一選擇器開關SW1選擇Μ間歇地點亮。停車燈 SW2亦被開開SW2之閉合而被點亮。 電池充電電壓控制電路12包括一閛滾體SCR，其被連 接於二接頭CH與ΒΤ間。充電接頭CH與閛滾體SCR之正極間 的節點經由Μ串聯被連接之電阻器R1、二極體D1與電晶體 Q1被接地。電晶體R1與二極髏D1間之節點經由一正常連接 之二極體D2被連接被閛流體SCR之一閘，且此闊經由電阻 器R2亦被連接於閛流翳SCR之陰極與電池接頭。 閘流髏SCR之陰極與電池接頭ΒΤ間的節點經由Μ二極 本纸張尺度適用中國國家標準（CNS〉Α4規格（210Χ297公釐） ---------^2'Ύ裝-- (請也聞讀#-面之注意事項再填寫本頁) 訂 經濟部中央標準局員工消費合作社印製 A7 B7 五、發明説明（2 ) 體D3、電阻器R3與電容器Cl之順序串聯的正常連接被接地 。二極體D3與電阻器R3間之節點經由一曾納二極體ZD2被 連接於電晶體Q1之基極。 在此具有上述構造之電池充電電壓控制電路12内，當 電池4被電氣式充電之正常狀況下，該電池被出現在接頭 BT之電壓的正半波成份加Μ充電。當電池電壓變成高於曾 納二極體ZD2之門_電壓時，電晶體Q1被打開Μ阻斷蘭電 流或降低在閘流體之閘的電壓，Μ防止蘭流體SCR之接通 且因而避免電池之過度充電。 現在參照第5圖，電池4故障、切斷或在別的狀態之 能供應實際無電氣電壓之情況被考慮。當電池被切斷時， 電容器C1被ACG1施加至電池接頭ΒΤ之電壓的正半波成份所 充電，且一經穿過電容器C1之電壓超過曾納二極體ZD2之 門鑑電壓時，電晶體Q1立邸接通。此再造成SCR被斷開* 且穿透電容器C1之電壓因而停止一段時間。電晶體Q1之此 接通狀態的時間長短被電容器C1與電阻器R3所定義的時間 常數所決定，且在電池充電ΒΤ之電壓波|形被給予成第5圖 由上算起第二値圖形所顯示者。換言之，在電晶體Q1接通 之際，閘流體SCR維持斷開，就算在充遒接頭CH產生有正 電壓且在電池接頭ΒΤ無電壓被產生亦然。因而，在電池接 頭ΒΤ之電壓被調節以不致增加超過某一規定之水準，且電 池4之過度充電可被避免。 然而，當方向燈LL與LR之一被接通而電池被切斷時， 因為在斷纗繼電器3之電感應，在電池接頭ΒΤ會如第5圖 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Α7 Β7 V. Description of the Invention (1) The present invention is related to an automatic battery charging voltage control circuit. A battery charging voltage control circuit is usually provided between a vehicle battery and an automatic ACG (AC generator) activated in the relevant internal combustion generator, and various working parts of the equipment on the vehicle are connected by the battery and ( Or) The ACG is powered. Typically, even if the battery is completely discharged or cut off for some reason, it must be able to sustain the operation of the vehicle. The circuit shown in Fig. 4 is a conventional battery charging voltage control circuit for locomotive, which is combined with a measure to prevent the battery from being cut off. In Section 4, ACG1 is modified. It is actuated by an internal combustion engine (not shown), and the ACG1 output connector is connected to a charging connector of a battery charging voltage control circuit 12. The battery connector BT, which acts as a voltage wheel output connector for the battery charging voltage control circuit, is connected to an intermittent relay 3, a parking light and an ignition control circuit CDI (these are examples of on-board equipment), and M is connected to a Battery 4. The intermittent relay 3 is connected to the left and right direction lights, and any of these direction lights can be lit intermittently by a selector switch SW1. The stop lamp SW2 is also turned on and turned on by SW2 and is turned on. The battery charging voltage control circuit 12 includes a roller SCR, which is connected between the two terminals CH and BT. The node between the charging terminal CH and the positive electrode of the roller SCR is connected in series through a resistor R1, a diode D1, and a transistor Q1 which are connected in series to ground. The node between transistor R1 and diode D1 is connected via a normally connected diode D2, and is connected to one of the fluidic SCRs, and this resistor is also connected to the cathode of the fluidic SCR and the battery connector via resistor R2. . The node between the cathode of the thyristor SCR and the battery connector BT applies the Chinese national standard (CNS> A4 specification (210 × 297 mm)) through the M dipole paper size --------- ^ 2 'equipment- -(Please also read the # -face's notes before filling out this page) Order A7 B7 printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 5. Description of the invention (2) The sequence of the body D3, resistor R3 and capacitor Cl is in series The normal connection is grounded. The node between the diode D3 and the resistor R3 is connected to the base of the transistor Q1 via a Zener diode ZD2. In the battery charging voltage control circuit 12 having the above structure, when the battery 4 Under normal conditions of electrical charging, the battery is charged by the positive half-wave component of the voltage appearing at the connector BT plus M. When the battery voltage becomes higher than the gate voltage of the Zener diode ZD2, the transistor Q1 is charged. Opening M blocks the blue current or reduces the voltage at the gate fluid, M prevents the blue fluid SCR from being turned on and thus prevents the battery from being overcharged. Now referring to Figure 5, the battery 4 is faulty, cut off, or in another state. It can be considered that it can supply practically no electrical voltage. When the cell is cut off, capacitor C1 is charged by the positive half-wave component of the voltage applied to the battery connector BT by ACG1, and once the voltage across capacitor C1 exceeds the threshold voltage of Zona diode ZD2, transistor Q1 stands Di is turned on. This causes the SCR to be turned off * and the voltage across the capacitor C1 is stopped for a period of time. The length of this on state of transistor Q1 is determined by the time constant defined by capacitor C1 and resistor R3, And when the voltage waveform of the battery charging BTT is given as shown in the second figure from Figure 5 above, in other words, when the transistor Q1 is turned on, the brake fluid SCR remains off, even if it is charged. A positive voltage is generated at the connector CH and no voltage is generated at the battery connector BT. Therefore, the voltage at the battery connector BT is adjusted so as not to increase above a certain level, and overcharging of the battery 4 can be avoided. However, When one of the direction indicators LL and LR is turned on and the battery is cut off, because of the electrical induction of the relay 3, the battery connector BTT will apply the Chinese National Standard (CNS) Α4 specification as shown in Figure 5. 210X 297 mm) (Please read the notes on the back before filling this page)
一 5 — 五、發明説明（3 ) A7 B7 經濟部中央標準局員工消費合作社印製 由上算起第三個圖形所示地生成一負電壓。因此，就算電 晶體Q1被接通且節點A為接地狀態，閘流體SCR之陰極接 頭可能變成負的，且電流可能經由電阻器R1與二極體D2流 * . 入閘流體SCR之陰極。所K，閘流體SCR之接通可能無法禁 止，且一正波形可能在每一週期出現於電池接頭BT，使得 在電池接頭BT之電壓未被控制，且連接於電池接頭BT之負 載可能遭到額外的高電壓。 當適當作用的電池被連接於電池接頭時，此慣用的電 池充電電壓控制電路可满意地操作。就算一感應負載被電 阻器於該控制電路之輸出接頭，只要該電池被連接而作用 ，其可吸收該感應負載之接通與斷開造成的貪電壓。然而 ，當一感應負載被連接於控制電路之輪出接頭時，且沒有 該電池，則該控制電路輸出端之負電壓可能阻止控制電路 之適當控制動作，且所形成之在控制電路產生的高電壓可 能導致不希望有的後果，諸如必須使用容忍高電壓之相當 昂貴的元件，及對車上設備施加不欲有之高電壓。 在看到習知技藝之這些問題下，本發明之主要目檁為 提供一種電池充電電壓控制電路，其可避免過高之電壓生 成，就算其電池被切斷時亦然。 本發明之一第二目標為提供一種電池充電電壓控制電 其可維持滿意的操作，就算其負載包括一感應成份亦 路 然 本發明之一第三目檫爲提供一種電池充電電壓控制電 路，其製造經濟且在所有狀況下均使用可靠。 本紙浪尺度適用中國國家標準（CNS ) A4規格（2I0X297公釐） 請 閲 背· 面 之 注 意1-5. Description of the invention (3) A7 B7 Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A negative voltage is generated as shown in the third figure from the previous figure. Therefore, even if transistor Q1 is turned on and node A is grounded, the cathode of the gate fluid SCR may become negative, and the current may flow through the resistor R1 and the diode D2 *. The cathode of the gate fluid SCR. Therefore, the turning on of the brake fluid SCR may not be prohibited, and a positive waveform may appear at the battery terminal BT every cycle, so that the voltage at the battery terminal BT is not controlled, and the load connected to the battery terminal BT may be subject to Extra high voltage. When a properly functioning battery is connected to the battery connector, this conventional battery charge voltage control circuit operates satisfactorily. Even if an inductive load is connected to the output connector of the control circuit by a resistor, as long as the battery is connected to function, it can absorb the greedy voltage caused by the inductive load being turned on and off. However, when an inductive load is connected to the wheel-out connector of the control circuit and the battery is not present, the negative voltage at the output of the control circuit may prevent the proper control action of the control circuit, and the resulting high Voltage can lead to undesired consequences, such as having to use rather expensive components that tolerate high voltages, and applying undesirably high voltages to the equipment on the vehicle. In view of these problems of the conventional art, the main object of the present invention is to provide a battery charging voltage control circuit which can prevent the generation of excessive voltage even when the battery is cut off. A second object of the present invention is to provide a battery charging voltage control circuit which can maintain satisfactory operation, even if the load includes an inductive component. A third aspect of the present invention is to provide a battery charging voltage control circuit, which Economical to manufacture and reliable to use in all conditions. The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (2I0X297mm). Please read the notes on the back
I 装 訂 -6 一 A7 B7 五、發明説明（4 ) 依據本發明，這些及其他目標可藉由提供一種電池充 電電壓控制電路而達成，包含：一充電接頭被連接於一 AC 發電器之輸出接頭；一電池接頭被修改Μ連接至一電池與 一負載；一閘流體Μ串聯被連接於該充電接頭與該電池接 頭間；與電池過度電壓防止設施，用於在電池接頭所偵测 之電壓高於一門檻值時，禁止該閛流體之接通Μ避免在該 電池接頭生成任何過度電壓；Μ及閛電流控制設施被連接 於該充電接頭與該閛流體之一閘間，用於在該過度電壓防 止設施操作且一貪電壓在該電池接頭被偵测時，防止電流 流入該閘内。 經濟部中央標隼局員工消費合作社印製 該電池接頭在例如具有感應元件之貪載Μ該電池被切 斷，或Μ該電池完全放電下被接通或斷開時可具有一負電 壓。由該負載產生之負電壓可因此被施加於該電池接頭。 角於選擇性地禁止該閘流體接通之電池過度電壓防止設施 可用任何設施加Μ實作，其藉由在適當時機使閘流體接通 與斷開而維持在電池接頭之電壓為固定。典型而言，該電 池過度電壓防止設施包含如電晶髏之開關元件，其被修改 成在被致動時選擇性地將閘流體之閘處的電壓拉低，Μ及 如CR時間固定電路之計時電路，其在電池接頭處所偵測之 電壓高於一門檻值時，Μ—段規定的時間長度保持該開關 元件為被致動的。 為準確地決定在電池接頭之可允許的貪電壓，該閘電 流控制設施可包含一曾納二極體，其被建接於該閘流體之 閛與該開關元件間，Μ讓閘之電壓被該開關元件拉低，就 本紙張尺度適用中國國家標隼（CNS ) Μ規格（21〇.χ297公釐） -7 - A7 ---—_B7__—一 . _ 五、發明説明（5 ) 算在該電池接頭有某些貪電壓被產生亦然。替選的是，一 電阻器或一陣列的二極髏可被用於取代一曾納二極體。 現在本發明在下面參照附圖被描述，其中： 第1圖為依據本發明之一電池充電電壓控制電路主要 部位的電路圔； 第2圖為顯示依據本發明的各種波形之圔； 第3(a)圔類似於第1圖，顯示本發明之一第二實施例； 第3 <b〉圖類似於第1圖，顯示本發明之一第三實施例； 第4圖爲一儋甩之電池充電電壓控制電路主要部位的 電路圖；Μ及 第5圖顯示依據習知技藝之各種波形之圖。 第1圖顯示一電池充電電壓控制電路2，本發明係實 施於此，其中對應於上述習知技蕕之部位係Μ相同的數字 表示。第1圖為電路包括一曾納二極髏ZD1用於閛電流控 制，其被連接於電阻器R1及二極體D1與二極髏D2之陰極間 作為閘電流控制設施，用Μ控制該SCR之陽極相對於陰極 之電壓。 若電池4在第1圖之電路中被切斷，電晶髏Q1M規則 的間隔重覆接通與斷開，其視電容器C1與電阻器R1M習知 技藝相同方式所定義的時間常數而定。類似於習知技藝者 ，當電池接頭ΒΤ之電壓超過曾納二極體ZD2之門檻電壓時 ，電晶體Q1接通，此防止閘流體SCR之閘電流不致於接通 閘流體SCR。同樣地，在以一 CR時間常數適當地決定電晶 體Q1接通狀態的期間長度，由ACG1來之正電壓被防止在每 本紙張尺度k用中國國家標準（CNS ) A4規格（2丨0X297公釐） -8 - A 7 B7 五、發明说明（6 ). 一週期被供應至電池接頭BT，但有遇期性之中斷，且在電 池接頭BT的上升可被適當地控制。此根據閘流體SCR接通 之禁止的電池過度電壓防止設施因而被形成。 在此實施例中，被閘電流控制曾纳二極髏ZD1之曾納 電壓Vz所決定之貪門檻值（-Vz)被選擇成大於炱電壓（-Vf〉 ，其在斷續繼電器3或其他感應負載如第2圖中由上算起 第二痼圖形般地Μ該電池被切斷而操作時出現。 因此，當斷續繼電器3操作所形成的負電壓被產生時 ，閘流體SCR之陽極具有比起陰極高的電壓，但其反而流 入該閘之電流被闊電流控制二極體ZD1阻斷。結果為：其 無閘電流，且閘流體SCR如第2圖由上算起第四値圖形顯 示般地變成無法在每一週期接通。換言之，閛流體SCRM 降低的頻次接通，且電池接頭ΒΤ處之電壓可如所欲地裨控 制。 在節點Α處相對於閛流體SCR之電壓如第2圖底部之I Binding-6 A7 B7 5. Invention Description (4) According to the present invention, these and other objectives can be achieved by providing a battery charging voltage control circuit, including: a charging connector is connected to the output of an AC generator Connector; a battery connector is connected to a battery and a load; a gate fluid M is connected in series between the charging connector and the battery connector; and a battery overvoltage prevention facility for the voltage detected at the battery connector Above a threshold value, the connection of the tritium fluid is prohibited to avoid generating any excessive voltage at the battery connector; the tritium and tritium current control facilities are connected between the charging connector and a gate of the tritium fluid for use in the The excessive voltage prevents the facility from operating and a greedy voltage prevents current from flowing into the gate when the battery connector is detected. Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. The battery connector may have a negative voltage when the battery is cut off, for example, with an inductive element, or the battery is turned on or off with the battery fully discharged. The negative voltage generated by the load can therefore be applied to the battery terminal. The battery overvoltage prevention facility for selectively prohibiting the switching fluid from being turned on can be implemented by any facility plus M, which maintains the voltage at the battery connector to be fixed by turning on and off the switching fluid at the appropriate time. Typically, the battery overvoltage prevention facility includes a switching element such as an electric crystal skull, which is modified to selectively pull down the voltage at the gate of the gate fluid when actuated, such as a CR time fixed circuit. Timing circuit, when the voltage detected at the battery connector is higher than a threshold value, the switching element is kept activated for a specified length of time in the M-segment. In order to accurately determine the allowable greedy voltage at the battery connector, the gate current control facility may include a Zener diode, which is built between the gate fluid and the switching element. The switching element is pulled down, and the Chinese national standard (CNS) M specification (20.1 × 297 mm) is applied to the paper size. -7-A7 ---—_ B7 __— I. _ 5. Description of the invention (5) Some battery voltages are also generated at the battery connector. Alternatively, a resistor or an array of diodes can be used in place of a Zener diode. The present invention is now described below with reference to the accompanying drawings, in which: FIG. 1 is a circuit of a main part of a battery charging voltage control circuit according to the present invention; FIG. 2 is a diagram showing various waveforms according to the present invention; FIG. a) is similar to FIG. 1 and shows a second embodiment of the present invention; FIG. 3 < b> is similar to FIG. 1 and shows a third embodiment of the present invention; FIG. Circuit diagrams of the main parts of the battery charge voltage control circuit; M and Fig. 5 show diagrams of various waveforms according to conventional techniques. Fig. 1 shows a battery charging voltage control circuit 2. The present invention is implemented here, in which parts corresponding to the above-mentioned conventional techniques are represented by the same numerals. Figure 1 shows that the circuit includes a Zener diode ZD1 for current control. It is connected between resistor R1 and the cathode of diode D1 and diode D2 as the gate current control facility. The SCR is controlled by M. The voltage of the anode relative to the cathode. If the battery 4 is cut off in the circuit of Fig. 1, the regular interval of the transistor Q1M is repeatedly turned on and off, depending on the time constant defined by the capacitor C1 and the resistor R1M in the same manner. Similar to a skilled artist, when the voltage of the battery terminal BTT exceeds the threshold voltage of the Zener diode ZD2, the transistor Q1 is turned on, which prevents the gate current of the gate fluid SCR from being turned on. Similarly, the length of the period in which transistor Q1 is turned on is appropriately determined by a CR time constant, and the positive voltage from ACG1 is prevented from using the Chinese National Standard (CNS) A4 specification (2 丨 0X297) at each paper size. (Centi) -8-A 7 B7 V. Description of the invention (6). One cycle is supplied to the battery connector BT, but there is a periodic interruption, and the rise in the battery connector BT can be properly controlled. This prohibition of an excessive battery voltage prevention facility based on the switching of the brake fluid SCR is thus formed. In this embodiment, the threshold voltage (-Vz) determined by the Zona voltage Vz of the Zona diode ZD1 controlled by the gate current is selected to be greater than the 炱 voltage (-Vf>), which is in the intermittent relay 3 or other The inductive load appears when the battery is cut off and operated as shown in the second figure from Figure 2 above. Therefore, when the negative voltage formed by the intermittent relay 3 operation is generated, the anode of the brake fluid SCR is generated. It has a higher voltage than the cathode, but the current flowing into the gate is blocked by the wide-current control diode ZD1. As a result, it has no gate current, and the gate fluid SCR is the fourth from the above figure. The graphic display becomes impossible to switch on every cycle. In other words, the tritium fluid SCRM is turned on at a reduced frequency, and the voltage at the battery terminal BT can be controlled as desired. The voltage at node A relative to the tritium SCR As shown at the bottom of Figure 2
J 經濟部中央標準局員工消費合作社印製 圖形所示地變化。當節點A處之電壓超過曾納二極體ZD1 之曾納電壓、穿過二極體D2之下降電壓Vd舆閘陰極電壓 Veic之和所得的門檻值Vth時，閘流體SCR接通（第2圖由 上算起第四個圖形）。因而，當閘電流控制曾纳二極體 D1不出現時，該門檻值將Μ—對應值變得較低，且每次節 點Α處之電壓升到一正值時，閘流體SCR將接通使得在電 池處之電壓能不受控制地上升。 依據本發明，因曾納二極體ZD1之曾納電壓Vz對門檻 值Vth有貢獻，由於電晶體Q1接通在節點A處之電壓上升 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） 9 經濟部中央標準局員工消費合作社印製 Α7 Β7 五、發明説明（7) 不足Μ接通閘流髖SCR。 閘電流控制曾納二極體ZD1在第1圖所示之實施例中 被用作為閘電流控制設施，但此閘電流控制設施並不限定 為一曾納二極體。例如，於第3(a)圖顯示者，電阻器R4可 被用於代替一曾納二極髏ZD1。在此例中，電阻器R4適當 地具有相當大的電阻值，例如當電阻器R2之電阻值為2ΚΩ 時為10ΚΏ。 其可能使用一陣列之二極體Dn (其Κ串聯被連接）如 第3(b)圖顯示地取代一曾納二極體。第3圖顯示之實施例 可達成第1圖顯示之實施例的類似結果。 因此，依據本發明，就算因如斷绪繼電器之感應負荷 的接通或斷開，以該電池被切斷或Μ該電池完全放電；促 成閘電流被供應給閘流體之閛，而在電池接頭處產生有負 電壓時，藉由提供閘電流控制設施較佳地包含一曾納二極 體，其被修改Μ產生一電壓大於在閘流體之陰極與陽極間 因前述充電接頭與閘間貪電壓所產生的電壓差下，其可能 防止該閘電流被實際地供應至蘭流體之閘。其因而可能Μ 該電池被連接抑或該電池被切斷來實施有利的電池充電電 壓控制，並在所有狀況下防止在電池接頭處電壓之任何不 正常上升。 雖然本發明已Μ其較佳實施例之角度被描逑，對熟習 該技藝者而言很明顯的是，各種變化與修改為可能的，而 不致偏離本發明在申請專利範圍所設立之領域。 本紙張尺度逋用中國國家標準（CNS ) Α4規格（210X297公釐） (請也閲讀f面之注意事項再填寫本頁) 訂 Μ Β7 五、發明説明（8) 元件標號對照J Printed by the Central Consumers' Bureau of the Ministry of Economic Affairs, Consumer Cooperatives. When the voltage at the node A exceeds the threshold value Vth obtained by the sum of the Zener voltage of the Zener diode ZD1, the drop voltage Vd across the diode D2, and the gate cathode voltage Veic, the gate fluid SCR is turned on (second The fourth figure from the top). Therefore, when the gate current control Zener diode D1 does not appear, the threshold value will reduce the M-corresponding value, and each time the voltage at node A rises to a positive value, the gate fluid SCR will be turned on. This allows the voltage at the battery to rise uncontrolled. According to the present invention, because the Zener voltage Vz of the Zener diode ZD1 contributes to the threshold value Vth, the voltage of the transistor Q1 connected at the node A rises. This paper applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) 9 Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs A7 B7 V. Description of the invention (7) Insufficient M to switch on the thyristor SCR. The gate current control Zener diode ZD1 is used as a gate current control facility in the embodiment shown in FIG. 1, but the gate current control facility is not limited to a Zener diode. For example, as shown in Figure 3 (a), the resistor R4 can be used in place of a Zenna dipole ZD1. In this example, the resistor R4 suitably has a relatively large resistance value, for example, 10KΏ when the resistance value of the resistor R2 is 2KΩ. It is possible to replace an Zener diode with an array of diodes Dn (whose K is connected in series) as shown in Figure 3 (b). The embodiment shown in Fig. 3 can achieve similar results to the embodiment shown in Fig. 1. Therefore, according to the present invention, even if the inductive load such as a break relay is turned on or off, the battery is cut off or the battery is completely discharged; the gate current is supplied to the gate fluid, and the battery connector When a negative voltage is generated, the gate current control facility preferably includes a Zener diode, which is modified to generate a voltage greater than the voltage between the cathode and anode of the gate fluid due to the aforementioned voltage between the charging connector and the gate. With the resulting voltage difference, it may prevent the gate current from being actually supplied to the gate of the blue fluid. It is therefore possible that the battery is connected or the battery is cut off to implement favorable battery charging voltage control and to prevent any abnormal rise in voltage at the battery connector under all conditions. Although the present invention has been described in terms of its preferred embodiments, it will be apparent to those skilled in the art that various changes and modifications are possible without departing from the scope of the present invention established in the scope of patent application. This paper uses the Chinese National Standard (CNS) Α4 specification (210X297 mm) (please also read the precautions on the f side and fill out this page) Order Μ B7 V. Description of the invention (8) Component reference
1 ____ ACG 2 ....電池充電電壓控制電路 3 ....斷續繼電器 4 ·...電池 12 ...電池充電電壓控制電路 ----------rJ-^— (請先閎讀#·面之注意事項再填寫本頁) 訂 4 經濟部中央標準局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -11 -1 ____ ACG 2 .... Battery charge voltage control circuit 3 .... Intermittent relay 4 · ... Battery 12 ... Battery charge voltage control circuit ---------- rJ-^ — (Please read the notes on # · 面 before filling out this page) Order 4 Printed by the Central Consumers Bureau of the Ministry of Economic Affairs, this paper is printed in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -11-