M420923 五、新型說明： 【新型所屬之技術領域】 本創作係有關-種過電流保護裝置，尤指_種可偵測電流 超載之保護裝置。 【先前技術】 如第4圖所示，為習用之過電流保護裝置，包含一霍爾 電流感測H 9 Q、-放大器9 !比較器9 2，電流可由 該霍爾電流感測器9 〇之輸入端流入，霍爾電流感測器9 〇 於輸出端並聯一電阻9 3，且與該放大器9 j並聯，於放大 器9 1之輸出端電性連接該比較器9 2，當過電流產生（即 電路短路）時，便能藉此過電流保護裝置偵測，以便施予保 護措施，例如藉由過電流產生之訊號自動將輪入電源切斷。 惟習用之過電流保護裝置具有以下問題： 1、所述之隹爾電流感測器9 〇，於應用時必須外加其 他控制電路，如前述之放大器9 1及比較器9 2，故其電路 體積相對較大。 2、所述之霍爾電流感測器9 〇、放大器9 1及比較器9 2 ’二者於應用b卞皆需輔助電源’其中該比較器9 2更需要 一參考電源。 3 '習知之過電流保護裝置，於啟動保護機制時，需要 一組比較器啟動。 4、習知之過電流保護裝置，多為單一保護迴路，因此 在保護機制啟動時，過電流已流經電路元件，故保護機制雖 已啟動’惟電路元件仍因電流通過而損毀。 3 M4.20923 【新型内容】 本創作之主要目的，在於解決上述的問題而提供一種過 電流保護裝置，藉此可縮小電路體積，且不需要比較器即可 啟動保護機制，故不必提供參考電源，且於保護機制啟動時 可避免電路元件或設備損毀。 為達前述之目的，本創作係包括： 所應用之電路中包含一負載以及一供應此負載電源之電 源模組，此電源模組包括一供電流流出至負載之輸出端，以 及一供電流流經負載流回之輸入端，此述之過電流保護裝置 包含一第一功率晶體保護電路及一第二功率晶體保護電路， 其中該第一功率晶體保護電路設於該輸出端與負載之間，係 以多數個包含電阻及電容串並聯構成，且包含一啟動電路， 另該苐二功率晶體保護電路設於該負載與輸入端之間，亦以 多數個包含電阻及電容串並聯構成，且包含一保護訊號驅動 單元，此保護訊號驅動單元接地且與一過電流保護單元電性 連接，該第一功率晶體保護電路的啟動電路與該第二功率晶 體保護電路之間串接一齊納二極體； 藉此，當過電流產生時，電流將流經第一功率晶體保護電路並觸 發該啟動電路，且電流經齊納二極體流通至該第二功率晶體保護電 路，且經該保護訊號驅動單元觸發並產生一保護訊號傳送至該過電流 保護單元，以產生對應之保護措施。 本創作之上述及其他目的與優點，不難從下述所選用實施例之詳 4 M4.20923 細說明與附圖中，獲得深入了解。 當然’本創作在某些另件上，或另件之安排上容許有所不同，但 所選用之實施例，則於本說明書中，予以詳細綱，並於附圖中展示 其構造。 【實施方式】 •月參閱第1圖至第3圖’圖中所示者為本創作所選用之 實_結構’此僅供說明之用’在專射請上並不受此種結 構之限制。 本實施例提供-種過電流保護裝置，如第丄圖所示，此 過電流保«置所應狀電針，包含—負載i以及—供應 此負載1電源之電源模組2，此電源模組2包括__供電流流 出至負載1之輸出端2 〇 ’以及一供電流流經負載i流回之 輸入端21 ，於本實施例中的電源模組2以提供直流電源為 例。 如第2圖所示，此述之過電流保護裝置包含一第一功率 晶體保護電路3及一第二功率晶體保護電路4，其中該第一 功率晶體保護電路3設於該輸出端2 ◦與負之間，係以 多數個包含電阻3 〇及電容3 i串並聯構成，且包含一啟動 電路3 2，另該第二功率晶體保護電路4設於該負載丄與輸 入端2 1之間’亦以多數個包含電阻4 〇及電容4工串並聯 構成，且包含一保護訊號驅動單元4 2，此保護訊號驅動單 元4 2接地，且與一過電流保護單元5電性連接，該第一功 率晶體保護電路3的啟動電路3 2與該第二功率晶體保護電 路4之間串接一齊納二極體6。 5 如第3圖所示，告禍φ + n Α 田電流產生時，電流將流經第一功率 日日體保護電路3並觸發兮 體6流通至該第二功率 ^ η _ 赞°亥啟動電路3 2，且電流經齊納二極 晶體保護電路4，且經該保護訊號驅 動單元42觸發並產生—# 4 „ _「 一保護訊號’且傳送至該過電流保護 早兀5，以產生對應之彳 又措施。此外，若過電流係自負載 1產生再由輸出端2 〇 W/)，L至電源模組2時，此時過電流訊 號可不必經過保護訊號 偟- $兮況中ώ 鉴動早元4 2，而直接將過電流訊號 傳达至該過電流保護單 凡b ’亦可產生對應之保護措施。 由上述之說明不難 現本創作之優點，在於： 1、本創作之過雷汐 H — 电叫保護裝置，其使用簡易的電路架構 即可實現過流電保護之 双果’故可相對於習用之過電流保護 裝置達到縮小電路體積之效果。 2 ϋι作之過電流保護裝置，其保護電路所使用之元 件白為被動Utl件，因此可不必提供參考電源。 3本;lj作之過電流保護裝置，於啟動保護機制時，不 需要比較11，因此不需要提供參考電源。 4、本創作之過電流保護裝置，可提供多重迴路之過電 流保護，故於保護機制啟動時，可避免造成電路元件或設備 的損毁。 乂上所尤貝;例之揭示係用以說明本創作，並非用以限制本創作 故舉凡數值之’憂更或等效元件之置換仍應隸屬本創作之範嘴。 由以上洋細說明，可使熟知本項技藝者明瞭本創作的確可達成前 述目的，貫已符合專利法之規定，爰提出專利申請。 【圖式簡單說明】 M420923 弟1圖係貫施例之過電流保護電路間易電路不意圖 弟2圖係貫施例之過電流保護電路細部電路不意圖 第3圖係實施例之過電流保護電路作動狀態示意圖 第4圖係習用之過電流保護電路示意圖。 【主要元件符號說明】 (習用部分） 霍爾電流感測器9 0 放大器9 1 比較器9 2 (本創作部分） 電阻9 3 負載1 電源模組2 輸出端2 0 輸入端2 1 第一功率晶體保護電路3 電阻3 0 電容3 1 啟動電路3 2 第二功率晶體保護電路4 電阻4 0 電容4 1 保護訊號驅動單元4 2 過電流保護單元5 齊納二極體6 7M420923 V. New description: [New technical field] This creation is related to an overcurrent protection device, especially a protection device that can detect current overload. [Prior Art] As shown in Fig. 4, the conventional overcurrent protection device includes a Hall current sensing H 9 Q, an amplifier 9 ! Comparator 9 2 , and the current can be obtained by the Hall current sensor 9 The input terminal flows in, and the Hall current sensor 9 is connected in parallel with a resistor 9 3 at the output end, and is connected in parallel with the amplifier 9 j , and is electrically connected to the comparator 9 2 at the output end of the amplifier 9 1 when an overcurrent is generated. When the circuit is short-circuited, it can be detected by the overcurrent protection device to apply protection measures, such as automatically turning off the power supply by the signal generated by the overcurrent. However, the conventional overcurrent protection device has the following problems: 1. The described current sensor 9 〇 must be applied with other control circuits, such as the aforementioned amplifier 9 1 and comparator 9 2, so the circuit volume thereof relatively bigger. 2. The Hall current sensor 9 〇, the amplifier 9 1 and the comparator 9 2 ' both require an auxiliary power supply for the application b ′ where the comparator 9 2 requires a reference power supply. 3 'The conventional overcurrent protection device requires a set of comparators to start when the protection mechanism is activated. 4. The conventional overcurrent protection device is mostly a single protection circuit. Therefore, when the protection mechanism is started, the overcurrent has flowed through the circuit components, so the protection mechanism has been activated. However, the circuit components are still damaged by the current passing. 3 M4.20923 [New Content] The main purpose of this creation is to solve the above problems and provide an overcurrent protection device, which can reduce the circuit volume and start the protection mechanism without a comparator, so it is not necessary to provide a reference power supply. And avoid damage to circuit components or equipment when the protection mechanism is activated. For the purposes of the foregoing, the present invention includes: The applied circuit includes a load and a power module for supplying the load power, the power module includes an output for supplying current to the load, and a current supply The overcurrent protection device includes a first power crystal protection circuit and a second power crystal protection circuit, wherein the first power crystal protection circuit is disposed between the output end and the load. The plurality of resistors and capacitors are connected in series and in parallel, and include a starting circuit. The second power crystal protection circuit is disposed between the load and the input end, and is also composed of a plurality of resistors and capacitors connected in series and in parallel, and includes a protection signal driving unit, the protection signal driving unit is grounded and electrically connected to an overcurrent protection unit, and a Zener diode is connected in series between the starting circuit of the first power crystal protection circuit and the second power crystal protection circuit Thereby, when an overcurrent is generated, the current will flow through the first power crystal protection circuit and trigger the startup circuit, and the current is passed through The nano diode is circulated to the second power crystal protection circuit, and is triggered by the protection signal driving unit to generate a protection signal to the overcurrent protection unit to generate corresponding protection measures. The above and other objects and advantages of the present invention are readily apparent from the detailed description of the selected embodiments described below. Of course, the present invention is allowed to differ on certain parts or arrangements of parts, but the selected embodiments are detailed in this specification and their construction is shown in the drawings. [Embodiment] • Please refer to the figure 1 to 3 in the month. The figure shown in the figure is the actual use of the structure. The structure is for illustrative purposes only. . In this embodiment, an overcurrent protection device is provided. As shown in the figure, the overcurrent protection device is provided with an electric needle, and includes a load i and a power supply module 2 for supplying the load 1 power supply. The group 2 includes an __ current supply to the output terminal 2 of the load 1 and an input terminal 21 for the current to flow through the load i. The power module 2 in this embodiment provides a DC power supply as an example. As shown in FIG. 2, the overcurrent protection device includes a first power crystal protection circuit 3 and a second power crystal protection circuit 4, wherein the first power crystal protection circuit 3 is disposed at the output terminal 2 Between negatives, a plurality of resistors 3 〇 and capacitors 3 i are connected in series and in parallel, and includes a start-up circuit 32, and the second power crystal protection circuit 4 is disposed between the load port and the input terminal 2 1' The plurality of resistors 4 〇 and the capacitors 4 are connected in parallel, and include a protection signal driving unit 42. The protection signal driving unit 42 is grounded and electrically connected to an overcurrent protection unit 5, the first A Zener diode 6 is connected in series between the starting circuit 32 of the power crystal protection circuit 3 and the second power crystal protection circuit 4. 5 As shown in Figure 3, when the current is generated, the current will flow through the first power day protection circuit 3 and trigger the body 6 to flow to the second power ^ η _ The circuit 3 2, and the current is passed through the Zener diode protection circuit 4, and is triggered by the protection signal driving unit 42 to generate -#4 „ _ "a protection signal" and transmitted to the overcurrent protection early 5 to generate Corresponding measures and measures. In addition, if the overcurrent is generated from the load 1 and then from the output terminal 2 〇W/), L to the power module 2, the overcurrent signal can be passed through the protection signal 偟-$兮鉴 Identifying the early element 4 2, and directly transmitting the overcurrent signal to the overcurrent protection unit b ' can also produce corresponding protection measures. The above description is not difficult to present the advantages of this creation, namely: The creation of Thunder H - electric protection device, which can achieve the effect of over-current protection with a simple circuit structure, can achieve the effect of reducing the circuit volume compared with the conventional over-current protection device. 2 ϋι作之Overcurrent protection device, used in its protection circuit The component white is a passive Utl device, so it is not necessary to provide a reference power supply. 3; lj is used as an overcurrent protection device, when starting the protection mechanism, there is no need to compare 11, so there is no need to provide a reference power supply. The protection device can provide over-current protection of multiple circuits, so that when the protection mechanism is started, the circuit components or equipment can be prevented from being damaged. The above disclosure is used to illustrate the creation, not to limit the present. The creation of the value of the 'worry or equivalent component replacement should still belong to the scope of this creation. From the above description, the skilled person can make it clear that the creation can achieve the above objectives, and has been in compliance with the patent law. The stipulations, 爰 filed a patent application. [Simple description of the diagram] M420923 Brother 1 is a method of over-current protection circuit between the circuit is not intended to be brother 2 Figure is an over-current protection circuit detailed circuit is not intended to be the third FIG. 4 is a schematic diagram of an overcurrent protection circuit used in the diagram of the overcurrent protection circuit of the embodiment of the present invention. [Explanation of main component symbols] (Practical part) Hall Current Sensor 9 0 Amplifier 9 1 Comparator 9 2 (This authoring part) Resistor 9 3 Load 1 Power Module 2 Output 2 0 Input 2 1 First Power Crystal Protection Circuit 3 Resistor 3 0 Capacitor 3 1 Start circuit 3 2 second power crystal protection circuit 4 resistor 4 0 capacitor 4 1 protection signal drive unit 4 2 over current protection unit 5 Zener diode 6 7