M240730 C7 ------—D7____ 五、創作說明（I ) 本創作係關於一種改良型直流無刷風扇馬達驅動電 路，係可藉由除頻電路設計，以適用於不同定子極片數的 風扇馬達的驅動電路。 目刖小型直流風扇廣泛運用於各式電器及資訊產品 上，以提供其散熱功效，而被大量生產並廣泛使用。 在資訊產品上如筆記型電腦之中央處理器會偵測直流 無刷風扇馬達之轉速（RPM風扇每分鍾之轉動速度），因 此直流無刷風扇馬達會以第三條導線（FG風扇運轉時輸 出方波）可以讓中央處理器偵測，但目前中央處理器偵測 無刷風扇馬達之轉速是以四極定子為基數之習用方式。 請參閱第三圖所示，係為習用四極片定子的直流無刷 風扇馬達結構分解圖，其包含有 一定子（50)，係於上、下極片組（51) (5 2)間設一線圈所組成， 一轉子（6 0 )，係内設一相對上、下極片組（5 1)(52)之極片位置的環狀永久磁鐵，其中心設有一 樞軸以與定子（5 0)軸心樞接， 一電路板（70)，其上設有一兼具檢知電磁場變換 功用的驅動電路，該驅動電路係包含有一設置對應於上、 下極片組（51) (52)任二極片交錯位置的霍爾元件 (7 1)，以檢知定子（50)與轉子（6〇)間的相對 電磁場變化，又該電路板上設有一 FG輸出端，供電腦主機 之中央處理器偵測， 由於該等風扇所使用的直流馬達係為無刷型式的直流 - — — — — —------I---— 丨丨訂·---I I I I 1 (請先閱讀背面之注意事項再填寫本頁} 3 M240730 C7 -----— D7__ 五、創作說明（V ) 馬達，其所需配合兼具檢知電磁場變換功用的驅動電路， 將檢知定子與轉子間電磁場變化後，作為反相電流輸入線 圈的依據，當此一風扇裝設至一般筆記型電腦之中央處理 器，將會讀* FG輸出端，以讀取該直流無刷風扇馬達之 轉速，由於此一風扇為四極片的定子，故其叩輸出端輸出 信號為每週期有四脈波，因此恰可配合中央處理器上的預 設基數，倘若更換為八或十六定子極片或者更多極數之定 子時，電腦之中央處理器將會偵測到風扇轉速為2倍值、 4倍值或更多倍值，因此習用直流風扇馬達於搭配電腦主 機方面，仍不具良好的共通性，往往令使用者須再重新設 定中央處理器偵測方式，亦對不甚瞭解風扇特性的使用者 感到困惑。 由上述可知，不同極片數的風扇馬達並無法應用於具 有特定極數基數的電腦主機上，故共同性不佳造成使用上 的不便。 為此，本創作之主要目的係提供一種可將不同極片數 直流風扇馬達適用於特定極數基數的電腦上，使用者僅需 調整一參數，即時改變馬達交變訊號輸出的頻率，亦即， 在不衫響主機偵測風扇之轉速的數值前提下，令電腦主機 裝設高轉速的直流無刷風扇。 欲達上述目的所使用的主要技術手段係令該直流風扇 馬達驅動電路包含有 一霍爾元件，係設置於定子轴座下，位於上、下極片 交錯位置，用以感應檢知極片與轉子間的電磁場變換， -------------裝-------訂--------線 (請先閱讀背面之注意事項再填寫本頁) 4 M240730 C7 五、創作說明（ 輸出對應電y信號， -除頻單元，係内設—除頻參數，其連接霍爾元件的 ^端，並將輸出的信號除頻後輸出，作為_無刷風扇 馬達之轉速之用，該除頻參數（倍數）可調整， 一驅動單元，係設於該霍爾元件的輸出端，其具有兩 ζ流訊號輸出端，供單線或雙線圈使用，又該驅動單元係 藉由該霍爾元件的輸出信號改變其輸出交變訊號電流的週 期， 上述直流風扇電路主要將該除頻單元設於該霍爾元件 的輸出端，由於霍爾元件係偵測轉子與定子極片間電磁場 變化，故其輸出信號可作為偵測風扇轉速之用，將其輸出 信號加以除頻後，作為供該電腦主機偵測馬達轉速的信 號，亦即，該除頻電路内設的參數係為馬達定子極數與電 月自主機預5又極數基數之間的倍數，如此一來，即可將霍爾 70件真正代表馬達轉速的信號轉換為與電腦主機預設極數 基數相同，由是可知，使用者毋需因使用不同於主機極數 基數的馬達，而需於安裝後至BIOS内重新設定，相當具有 實用性、創作性。 為使貴審查委員能進一步瞭解本創作之結構特徵及 其他目的，茲附以圖式詳細說明如后 (一）圖式部份 第一圖係本創作的一電路方塊圖。 第二圖係第一圖除頻單元經設定不同除頻倍數的輸出信 號波形圖。 5 本紙張尺度適用^S"ii?7cNS)A4規格⑵〇 X 297公釐) "~-- M240730 C7 五、創作說明（4) 第二圖係習^直流無刷風扇馬達的部份立體分解圖 揭示一四極定子的風扇馬達。 (二）圖號部份 其 (1 0)霍爾元件 (1 3)除頻單元 (1 5)保護單元 (5 1 )上極片組 (6 0)轉子 (12)放大電路 (1 4)驅動單元 (5 0)定子 (5 2)下極片組 (7 0)電路板 (7 1 )霍爾元件 本創作係為一種調整型的直流風扇馬達驅動電路，其 可經由調整而適用不同極片數定子的風扇馬達，而該馬達 係包含有一定子、一轉子及一定子線圈組，該定子係由 上、下極片組組成，而該轉子係具有一相對極片組端面的 複數磁極對環狀永久磁鐵。 請參閱第一圖所示，係本創作一較佳實施例的電路方 塊圖’即配合前揭風扇馬達使用，該風扇馬達的線圈組係 為雙線圈，該馬達驅動電路包含有· 一霍爾元件（10)，係設置於上、下極片組兩極片 交錯位置，用以感應檢知極片與轉子間電磁場變換，而輸 出對應電子信號，其直流電源端係連接有一由突波吸收器 或電容組成的穩壓單元Z3，以穩定的直流電壓， 一放大器（12)，係連接於該霍爾元件（1〇)的 輸出端’以放大霍爾元件（1〇)的輸出信號， 一除頻單元（1 3 )，係設於該放大器（1 2 )的輸 -------------裝— I (請先閱讀背面之注意事項再填寫本頁)M240730 C7 ------— D7____ V. Creation Instructions (I) This creation is about an improved DC brushless fan motor drive circuit, which can be designed by a frequency divider circuit to apply to different stator pole pieces. Drive circuit for fan motor. This small DC fan is widely used in various electrical appliances and information products to provide its heat dissipation effect, and has been mass-produced and widely used. In information products, the central processing unit of a notebook computer will detect the speed of the DC brushless fan motor (RPM fan rotation speed per minute), so the DC brushless fan motor will use the third wire (output when the FG fan is running Square wave) can be detected by the central processing unit, but the central processing unit detects the speed of the brushless fan motor based on the conventional method of four-pole stator. Please refer to the third figure, which is an exploded view of the structure of a conventional DC brushless fan motor with a four-pole stator. It includes a stator (50), which is arranged between the upper and lower pole group (51) (5 2). It consists of a coil and a rotor (60). It is a ring-shaped permanent magnet with a pole piece position relative to the upper and lower pole piece groups (51) (52). A pivot is arranged at the center to connect with the stator ( 50) The axis is pivotally connected. A circuit board (70) is provided with a driving circuit having the function of detecting electromagnetic field conversion. The driving circuit includes a set corresponding to the upper and lower pole piece groups (51) (52). ) Any Hall element (71) with staggered positions of two poles to detect the relative electromagnetic field change between the stator (50) and the rotor (60), and the circuit board is provided with an FG output terminal for the computer host. The CPU detects that the DC motor used by these fans is a brushless DC --- — — — — ————— I ---— 丨 丨 Order --- IIII 1 (Please Please read the precautions on the back before filling in this page} 3 M240730 C7 -----— D7__ V. Creation Instructions (V) Motor, the required cooperation is also a detection electric The drive circuit for the field conversion function will detect the change in the electromagnetic field between the stator and the rotor as the basis for the inverse current input coil. When this fan is installed in the central processor of a general notebook computer, it will read * FG output In order to read the speed of the DC brushless fan motor, since this fan is a four-pole stator, the output signal of its 叩 output terminal has four pulses per cycle, so it can just match the preset base on the central processor. If you replace the stator with eight or sixteen pole pieces or more poles, the CPU of the computer will detect that the fan speed is 2 times, 4 times or more, so the DC fan is used. The motors still do not have good commonality in matching with the host computer, which often makes users have to reset the CPU detection method, and it is also confusing for users who do not know much about the characteristics of fans. From the above, we can see that the number of different poles The fan motor cannot be applied to a computer host with a specific number of poles, so the commonality is inconvenient. Therefore, the main purpose of this creation is to mention Provides a DC fan motor with different number of pole pieces applicable to a computer with a specific pole number. Users only need to adjust one parameter to change the frequency of the alternating signal output of the motor in real time. Under the premise of the numerical value of the rotation speed, the host computer is equipped with a high-speed DC brushless fan. The main technical means used to achieve the above purpose is to make the DC fan motor drive circuit include a Hall element, which is arranged on the stator shaft seat. It is located at the staggered position of the upper and lower pole pieces. It is used to detect and detect the electromagnetic field change between the pole piece and the rotor. ----- line (please read the precautions on the back before filling this page) 4 M240730 C7 V. Creation instructions (output corresponding electric y signal,-frequency division unit, built-in-frequency division parameter, which is connected to Hall The ^ terminal of the element, and divides the output signal and outputs it as the speed of the _ brushless fan motor. The frequency division parameter (multiplier) can be adjusted. A driving unit is provided at the output terminal of the Hall element. , Which has two ζ stream signal output terminals for single wire or double wire Use, and the driving unit changes the period of its output alternating signal current by the output signal of the Hall element, the above-mentioned DC fan circuit mainly sets the frequency division unit at the output end of the Hall element, because the Hall element It detects the change of the electromagnetic field between the rotor and the stator pole piece, so its output signal can be used to detect the speed of the fan. After dividing the output signal, it can be used as a signal for the host computer to detect the speed of the motor. The parameter set in the frequency division circuit is a multiple between the number of poles of the motor stator and the base number of 5 and the number of poles from the host. In this way, 70 Hall signals that truly represent the speed of the motor can be converted into a computer. The preset base number of the host is the same. It is known that the user does not need to use a motor different from the base number of the host and needs to be reset in the BIOS after installation, which is quite practical and creative. In order to allow your reviewers to further understand the structural characteristics and other purposes of this creation, I have attached detailed illustrations as follows (a) Schematic part The first figure is a circuit block diagram of this creation. The second diagram is the output signal waveform diagram of the first division unit with different division multiples. 5 This paper size is applicable ^ S " ii? 7cNS) A4 specification ⑵〇X 297mm) " ~-M240730 C7 V. Creation instructions (4) The second picture is a part of a stereo DC brushless fan motor Exploded view reveals a four-pole stator fan motor. (2) Part of the figure: (1 0) Hall element (1 3) Frequency division unit (1 5) Protection unit (5 1) Upper pole piece group (60) Rotor (12) Amplifying circuit (1 4) Drive unit (50), stator (52), lower pole piece group (70), circuit board (71), Hall element. This creation is an adjustable DC fan motor drive circuit, which can be adjusted to apply different poles. Fan motor with a number of stators, and the motor system includes a stator, a rotor, and a certain sub-coil group, the stator system is composed of upper and lower pole groups, and the rotor system has a plurality of magnetic poles opposite to the end face of the pole group For ring-shaped permanent magnets. Please refer to the first figure, which is a circuit block diagram of a preferred embodiment of the present invention. That is, it is used in conjunction with a front fan motor. The coil of the fan motor is a double coil. The motor drive circuit includes The element (10) is arranged at the staggered position of the two pole pieces of the upper and lower pole piece groups, and is used to sense and detect the electromagnetic field conversion between the pole piece and the rotor, and output the corresponding electronic signal. The DC power terminal is connected with a surge absorption. The voltage stabilizing unit Z3 composed of a voltage regulator or a capacitor is connected to the output terminal of the Hall element (10) by an amplifier (12) with a stable DC voltage to amplify the output signal of the Hall element (10). A frequency division unit (1 3), which is set at the output of the amplifier (1 2) ------------- installation-I (Please read the precautions on the back before filling this page)
^-T°J —線 6 M240730 C7 --______D7__ 五、創作說明（二） 出山端，以將放大後的霍爾信號進行除頻後輸出，又其輸出 端則為無刷風扇馬達轉速輸出端FG，其中該除頻單元（工 3 )的除頻參數係可調整，亦即，該除頻參數為霍爾輸出 信號與電腦主機預設極數基數值的倍數該除頻單元（工 3 )可為一積體電路， 一驅動單元（14)，係連接連接至放大器（1 2 )_，即該驅動單元（i 4)的電流交變頻率係由霍爾元 件經放大器後（1〇) (12)輸出的脈波信號決定之， 該驅動單元（1 4)可為-驅動ic’亦可與該除頻單元製 成一積體電路， 保遵單tl(15)，係包含有-由二極體D1及兩穩 壓單元Z卜Z2,其中該二極體D1係、連接於該驅動單^ (1 4 )的直流電壓端與定子線圈L1、L2組連接至直流電 壓端點之間，而兩穩壓單元21、22分別連接驅動單元 4 )兩電流輸出端〇1、〇2與直流低電壓端點間，其中該二 極體D1係防止兩線圈2卜Z2在交變電流相位變化的^ 間，所產生反電動勢突波直接饋入直流電壓v+以及保護 驅動電路内部所能承受的突波，藉以保護與直流電壓連接 的各單元元件。 又，該除頻單元（1 3 )輸出端係透過一電壓提升電 阻器R3，且串接濾雜訊電容器C2，其目的可提供使用者無 雜訊之訊號，其中該電壓提升電阻器可依使用者之需求 接R3及可不接R3。 再請配合參閱第二圖所示，係為不同定子極片霍 -------------^-------^---------線 (請先閱讀背面之注咅)事項再填寫本頁} 7 M240730 C7 D7 五、創作說明（1 ) 件的輸出信號波形圖。 一般四極片定子的風扇馬達，因極片面積較大，與轉 子對應的面積亦較大，於一時間週期，將會產生四個脈 波’圖示僅標示半時間週基的波形圖，故僅為二個脈波， 因此，對於設定為四極數基數的電腦主機而言，該風扇馬 達的除頻參數設為1 = 2 0。 而八極片定子的風扇馬達，因極片數增加，各極片與 轉子對應的面積縮減，故其間的電磁場交換時間相對縮 短，因此霍爾元件輸出一較高頻的感知信號，如第二圖所 示，其輸出頻率為四極風扇的二倍，對於設定為四極數基 數的電腦主機而言，該風扇馬達的除頻參數設為2 = 2 1， 對除頻電路而言即除以1次2的數值。 同理，針對十六極片定子風扇馬達同樣需要，各極片 與轉子對應的面積縮減，故其間的電磁場交換時間相對縮 短，因此除頻單元也需配合霍爾元件，該除頻單元可設定 除頻參數為4 = 22，對除頻電路而言即除以2次2的數 值。 由上述可知，本創作係提供一馬達驅動電路的創新設 計，令不同定子極數的風扇馬達皆可適用具有相同極數基 數的電腦主機，亦即，電腦主機可應用此類風扇馬達而達 到方便更換具高轉速、高效能，而且使用者毋需再進入 BIOS更動極數基數的設定，因此，具有相當高的實用性、 新穎性及進步性。 因此，本創作之設計符合新型專利之要件，爰依法具 本紙張尺錢对_家鮮(CNS)A4規格⑵“ 297公£ -------------裝-------訂--------線 (請先閱讀背面之注意事項再填寫本頁) M240730 C7 D7 五、創作說明（ 文提出申請 9 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項再填寫本頁)^ -T ° J —line 6 M240730 C7 --______ D7__ V. Creative Instructions (2) Out of the mountain, the amplified Hall signal is divided and output, and its output is the brushless fan motor speed output FG, where the frequency division parameter of the frequency division unit (factor 3) is adjustable, that is, the frequency division parameter is a multiple of the Hall output signal and a preset base number of the computer host. The frequency division unit (factor 3) It can be an integrated circuit, a driving unit (14), which is connected to the amplifier (1 2), that is, the current alternating frequency of the driving unit (i 4) is passed by the Hall element through the amplifier (1〇). (12) The output pulse signal determines that the driving unit (1 4) can be-driving ic 'or can be made into an integrated circuit with the frequency division unit. Guaranteed compliance with tl (15) includes- A diode D1 and two voltage stabilizing units Z2 and Z2, wherein the diode D1 is connected to the DC voltage terminal of the driving unit ^ (1 4) and the stator coils L1 and L2 are connected to the end of the DC voltage And the two voltage stabilizing units 21 and 22 are respectively connected to the driving unit 4) between the two current output terminals 〇1, 〇2 and the DC low voltage terminals, where The diode D1 prevents the two coils Z2 and Z2 from changing the phase of the alternating current, and the back-EMF surge generated directly feeds the DC voltage v + and protects the surge that the drive circuit can withstand. Voltage-connected unit elements. In addition, the output end of the frequency dividing unit (1 3) passes through a voltage boosting resistor R3 and is connected in series with a noise filtering capacitor C2, the purpose of which is to provide users with no noise signals. The voltage boosting resistor can be The user's needs are connected to R3 and may not be connected to R3. Please refer to the second figure for cooperation. It is different stator pole pieces Huo ------------- ^ ------- ^ --------- line ( Please read the note on the back side) and fill in this page} 7 M240730 C7 D7 V. Creation instruction (1) The output signal waveform diagram of the part. Generally, the fan motor of a four-pole stator has a larger pole piece area and a larger area corresponding to the rotor. In a time period, four pulse waves will be generated. There are only two pulse waves. Therefore, for a computer host set to a base of four poles, the frequency division parameter of the fan motor is set to 1 = 2 0. For an eight-pole stator fan motor, due to the increase in the number of pole pieces, the area corresponding to each pole piece and the rotor decreases, so the electromagnetic field exchange time between them is relatively shortened, so the Hall element outputs a higher-frequency sensing signal, such as As shown in the figure, the output frequency is twice that of a four-pole fan. For a computer host set to a four-pole base, the fan motor's frequency division parameter is set to 2 = 2 1 and for the frequency division circuit, it is divided by 1. Number of times 2. Similarly, for the 16-pole stator fan motor, the area corresponding to each pole piece and the rotor is reduced, so the electromagnetic field exchange time is relatively shortened. Therefore, the frequency division unit also needs to cooperate with the Hall element. The frequency division unit can be set. The frequency division parameter is 4 = 22, which is a value divided by 2 for the frequency division circuit. As can be seen from the above, this creation provides an innovative design of a motor drive circuit, so that fan motors with different stator pole numbers can be applied to computer hosts with the same number of pole bases, that is, computer hosts can use such fan motors for convenience The replacement has a high speed and high performance, and the user does not need to enter the BIOS to change the setting of the base number of the pole. Therefore, it has a very high practicability, novelty and progress. Therefore, the design of this creation complies with the requirements of a new type of patent. According to the law, this paper has a pair of paper and a pair of _home fresh (CNS) A4 specifications ⑵ "297 Kg £ ------------- install --- ---- Order -------- line (please read the notes on the back before filling in this page) M240730 C7 D7 V. Creative Instructions (The application is submitted on 9 pages. The paper size applies to Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) (Please read the notes on the back before filling this page)