TWM245664U - DC motor protection circuit - Google Patents
DC motor protection circuit Download PDFInfo
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- TWM245664U TWM245664U TW92219368U TW92219368U TWM245664U TW M245664 U TWM245664 U TW M245664U TW 92219368 U TW92219368 U TW 92219368U TW 92219368 U TW92219368 U TW 92219368U TW M245664 U TWM245664 U TW M245664U
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M245664 ?、創作說明Q) 【新型所屬之技術領域】 種直流馬達保護電路, 電源反接時造成驅動電路或直種設置有防止 【先前技術】 飞1肌馬達燒毀之保護電路。M245664? Creative Instructions Q) [Technical field of the new type] A kind of DC motor protection circuit. When the power supply is reversed, the drive circuit or the direct type is provided with a protection circuit that prevents the motor from being burned.
k者電腦各部件的功率 A 大。在這方S,以CPUS斬升两’其發熱量也越來越 時代的幾十萬顆,發展到:大。當CPU晶體管數目從386 普通的咖表面溫度都可以夺—代 =0。多萬顆時’二 是高達80甚至於上百声J\j 5 0 80 C。而CPU内部則更 越高了。由此電腦世對散熱的要求也就越來 最普遍的就是風冷散熱法心;J =散熱設備’當中 鍵部件< τ λ ^政熱風扇作為風冷散熱器的關 厥丨仟之,引起了人們對它的關注。 風扇的電機技術是風扇裏最關鍵 扇電機的種類’可以把風扇分為直流;=::j 用無碳刷直流馬達且無碳二而直流風扇多使 產味鑤彳h的磁i日水册Γ i L馬達是用内部的控制電路 產生k化的磁劳來▼動扇葉轉動,轉 而變化,請參考第一圖,第m:?工作電[的间低 保護電路方塊圖,《中電路所使用:σ無碳刷直流馬達 -搞辦苴击接π “二保護元件24係為整流 一桎體其串接於直“源22與驅動電路The power A of each component of the computer is large. On this side, the CPUS cuts two's, and its heat generation is also increasing by the hundreds of thousands of times, and has developed to: large. When the number of CPU transistors from 386 ordinary coffee surface temperature can be captured-generation = 0. When there are more than 10,000, the second is as high as 80 or even hundreds of sounds. J \ j 5 0 80 C. The CPU is even higher. As a result, the computer world ’s requirements for heat dissipation have become more and more common. The most common is the air-cooled cooling method; J = the key component of the heat dissipation device < τ λ ^ The government thermal fan as the air-cooled radiator has been caused, which has caused People pay attention to it. The motor technology of the fan is the most critical type of fan motor in the fan. 'The fans can be divided into direct current; = :: j uses a carbon brushless DC motor and no carbon two, and the DC fan mostly produces magnetic water that produces miso h. The Γ i L motor uses the internal control circuit to generate k-shaped magnetic force to move the fan blades to change. Please refer to the first figure, the block diagram of the low-protection circuit of the m :? working power [, Used in the middle circuit: σ carbonless brushless DC motor-to deal with tapping π "the two protection elements 24 are rectifiers and the body is connected in series" the source 22 and the drive circuit
路係由驅動Κ261與霍爾元件⑽組成,並當夂J 可藉由整流一極體之特性於逆向電壓時止、 “】:巧當f,22反接時所造成直 流馬達之相害’但是於正常工作中,㈣二圖習知無碳刷 M245664The circuit is composed of driving K261 and Hall element ⑽, and when 夂 J can be used to reverse the voltage by the characteristics of rectifying a pole body, "]: coincidence of DC motor caused by f, 22 reverse connection ' However, in normal work, the second picture is familiar with carbon brushless M245664
以ΐίΐ!:之電路電廢分配方塊圖所示,整流二極 ΐ有大約〇.7伏特之電麼壓降,如果使用5伏 、堅之電壓源驅動,則實際上,驅動電腺? β 口古你田 使传風扇整體之散熱效率降低。 【新型内容】 作之主 止電源 保護元 的保護 降的情 達成上 有:一 流馬達 於該直 與該直 保護電 身之電 高之電 的情形 使貴 請參閱 僅提供 驅動該 該驅動 藉此, ,並且 小於習 可明顯 風扇之 能更進 本創作 明用, 在於提供一 造成電路及 順向導通時 此可明顯的 昇風扇之散 本創作提供 ;一直流馬 直流 電路 當直 當正 知之 的改 散熱 一步 之詳 並非 本創 ’具有防 ,並且此 小於傳統 減少而下 為了 路,包括 接於該直 件,連接 驅動電路 元件用來 護元件本 電路有更 少而下降 為了 術内容, 所附圖式 制。 反接時所 件於電路 元件,因 形,並提 述目的, 直流電源 ,係用以 流電源與 流馬達。 路及馬達 壓壓降遠 壓,所以 ,並提昇 審查委員 以下有關 參考與說 馬達損害 其本身之 改善馬達 熱效率。 一種直流 達;一驅 馬達動作 之間,係 流電源反 常工作導 保護元件 善馬達轉 效率。 瞭解本創 細說明與 用來對本 達保護電路 之保護元件 電壓壓降遠 轉速因電壓 馬達保護電 動電路,連 ;一保護元 用以保護該 接時該保護 通時,該保 使得驅動 速因電壓減 作特徵及技 附圖,然而 創作加以As shown in the block diagram of the circuit's electrical waste distribution, the rectifier diode ΐ has a voltage drop of about 0.7 volts. If it is driven by a 5 volt, strong voltage source, in fact, the electrical glands are driven? β 口 古田 Reduces the overall heat dissipation efficiency of the fan. [New content] The main reason for the protection of the main power supply protection unit is that the first-class motor has a high electric power in the direct and the direct protection electrical body. Please refer to only providing the drive. , And less than Xi Ke obviously the fan's ability can be further used in this creative application, which is to provide a loose version of the fan that can obviously increase the circuit and the forward direction; the straight-flow DC circuit should be directly known Changing the details of the heat dissipation step is not original, and it is less than the traditional reduction and is for the road, including connecting to the straight piece, connecting the driving circuit components to protect the components. This circuit has fewer and is reduced to technical content. Attached Schema. When connected in reverse, the components are in the circuit components, due to the shape, and for the purpose mentioned, the DC power supply is used for current power and current motor. The road and the motor pressure drop far pressure, so and improve the review committee The following related references and comments Motor damage itself improves the thermal efficiency of the motor. One kind of direct current; between the drive of the first drive motor, the DC power supply works abnormally and the protection element improves the motor's efficiency. Understand the detailed description of this invention and the voltage drop of the protective element used to protect the circuit of the circuit. The voltage motor protects the electric circuit due to the voltage motor. A protection element is used to protect the connection when the protection is on. Reduced features and technical drawings, but the creation of
M245664 四、創作說明(3) ----- 【實施方式】 y第二圖為本創作無碳刷直流馬達保護電路1 〇方塊圖, 係使用於散熱風扇驅動電路i 6與直流馬達i 8之保護,其中 包括,:直流電源1 2、一直流馬達1 8、一驅動電路丨6及 保蒦元件1 4,上述中該直流馬達係為一無碳刷直流 ,且該保護元件1 4係為一蕭特基二極體。 復请參考第三圖,其中該驅動電路1 6更包含有—驅動 IC161連接一霍爾元件162,該驅動ΙΠ61連接到直流馬達 18内部之感應線圈,經由霍爾元件162感應出直流馬達工 内部磁場的變冑,並分別產生高、⑻電位之訊號,用以控 制驅動IC1 6 1之動作並進而驅動直流馬達丨8運轉,其中I 爾元件162與參考電位19之間更可串接一電阻器1^,藉由電 阻器R之特性可以限制流過霍爾元件162之電流,用以保護 當電流過大時而造成霍爾元件丨6 2之損害。 復請參考第三圖,其中直流電源丨2係提供整個保護電 路與直流馬達動作時所需之電能,該直流電源丨2與驅動電 路1 6之間串接一保護元件丨4,用以當直流電源丨2反接時將 電路截止(OFF),使得驅動電路16與直流馬達18不至於 造成重大損害,且可於驅動電路16與保護元件14之間並接 一電容器C,用以當直流電源12開啟(〇N)瞬間,在電路 中所造成之突波電壓導致驅動電路丨6無法承受而燒毀。 復請參考第三圖,其中該保護元件丨4係為一蕭特基二 極體’由於蕭特基二極體之順向導通偏壓一般為〇 · 2伏特 ,遠小於習知整流二極體之〇. 7伏特,所以可以減少因為M245664 IV. Creation Instructions (3) ----- [Embodiment] y The second picture is a block diagram of the creation of a carbonless brushless DC motor protection circuit 10, which is used for the cooling fan drive circuit i 6 and DC motor i 8 The protection includes: DC power supply 1 2. DC motor 1 8. A drive circuit 6 and protection element 14. The DC motor is a carbon brushless DC, and the protection element 1 4 is For a Schottky diode. Please refer to the third figure again, wherein the driving circuit 16 further includes a driving IC 161 connected to a Hall element 162, and the driving IC 61 is connected to an induction coil inside the DC motor 18, and the inside of the DC motor is induced via the Hall element 162. The magnetic field changes and generates high and low potential signals respectively, which are used to control the operation of the driving IC 1 6 1 and then drive the DC motor 丨 8 to run. Among them, a resistance can be connected in series between the element 162 and the reference potential 19 The device 1 ^ can limit the current flowing through the Hall element 162 by the characteristics of the resistor R, so as to protect the Hall element 6 2 from being damaged when the current is too large. Please refer to the third figure again, in which the DC power source 丨 2 provides the power required for the entire protection circuit and the DC motor to operate. A protection element 丨 4 is connected in series between the DC power source 丨 2 and the drive circuit 16 for When the DC power source 2 is reversely connected, the circuit is turned OFF, so that the driving circuit 16 and the DC motor 18 will not cause significant damage, and a capacitor C can be connected in parallel between the driving circuit 16 and the protection element 14 for direct current. Immediately after the power source 12 is turned on (ON), the surge voltage caused in the circuit causes the drive circuit 6 to withstand and burn out. Please refer to the third figure again, in which the protection element 丨 4 is a Schottky diode. Due to the Schottky diode's forward conduction bias voltage is generally 0.2 volts, which is much smaller than the conventional rectifier diode. Body 0.7 volts, so it can be reduced because
第7頁Page 7
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流馬達18轉速下降的現象,並提昇直 風扇散熱效率:以達到保護”咸少轉逮變化及提昇 路電壓ί ί;:闻係為習知無碳刷直流馬達保護電路之電 ,者電路正a私θ ,其中直流電源2 2係為5伏特直流電源 —i流二^ 時保護元件24導通,該保護元件㈣為 俠性;^體,一般整流二極體導通時其兩端壓& ,特’因此供應到驅動電路26之工作電壓只有广:為:,7 广時會導致直流馬達28之轉速降低而影響風扇之散熱效率 參考第四圖,係為本創作無碳刷直流馬達保嗜 電路電壓分配方塊圖,其中直流電源12係為5伏平特蔓直電流路之 f,當電路正常動作時保護元件14導通,該保護元件14係 ^一蕭特基二極體,一般蕭特基二極體導通時其兩端壓降 馬ϋ· 2伏特,因此供應到驅動電路16之工作電壓係為4 8伏 特:因此可明顯改善轉速下降之情形以達到保護減少 速變化及提耳風扇散熱效率之功能。 如上所述,本創作可以提供一保護元件丨4用以防止直 〜l電壓1 2之反接所造成之驅動電路1 6及直流馬達1 8之損宝 ’、並可藉由該保護元件1 4蕭特基二極體極小的順向導通; 壓’使得直流電源1 2供應較咼的電壓給驅動電路1 6,並辦 加直流馬達1 8之運轉能力進而提昇風扇之散熱效率。W曰 綜上所述’本創作完全符合專利申請之要件,故美依 專利法提出申請,請詳查並請早曰惠准專利,實感德便^The phenomenon that the speed of the flow motor 18 decreases, and the cooling efficiency of the direct fan is improved: to achieve protection, change, and increase the voltage of the road. Ί :: The system is known as the carbonless brushless DC motor protection circuit. a private θ, where the DC power supply 22 is a 5 volt DC power supply-when the current flow element ^ is turned on, the protection element 24 is conductive; the protection element ; is chivalrous; ^ body, general rectifier diodes when the two ends of the voltage & Therefore, the operating voltage supplied to the drive circuit 26 is only wide: 7: When wide, 7 will cause the speed of the DC motor 28 to decrease and affect the cooling efficiency of the fan. A block diagram of the voltage distribution of the circuit, where the DC power supply 12 is a f of a 5 volt pintrat straight current circuit. When the circuit is operating normally, the protection element 14 is turned on. The protection element 14 is a Schottky diode, generally Xiao The voltage drop between the two ends of the dynode when it is turned on is 2 volts, so the operating voltage supplied to the drive circuit 16 is 48 volts: Therefore, the situation of the speed reduction can be significantly improved to achieve protection to reduce the speed change and raise the ear. Fan cooling effect As mentioned above, this creation can provide a protection element to prevent the damage of the drive circuit 16 and the DC motor 18 caused by the reverse connection of the direct voltage to the voltage 12, and can be used by the The protection element 14 has a small Schottky diode with smooth forward conduction; the voltage 'makes the DC power supply 12 to supply a relatively high voltage to the drive circuit 16 and increases the operating capacity of the DC motor 18 to improve the cooling efficiency of the fan. .W said in summary, 'This creation is fully in line with the requirements of patent application, so the United States filed an application in accordance with the patent law.
M245664M245664
釣局之貴審查委員有任何的稽 以保障創作者之權益,若 疑’睛不吝來函指示。 詳細說明:i:述::為本創作最佳之-的具體實施例之 類似變化之實本創作申請專利範圍之精神與其 悉該項技藝:iL’,:包ί於本創作之範嘴中,任何熟 飾皆可涵蓋在 ,可輕易思及之變化或修 卿白』油急在以下本案之專利範圍。 人ιThe fishing inspection committee has any inspection committee to protect the rights and interests of the creators. If in doubt, please follow the instructions of the letter. Detailed description: i: description :: the best embodiment of this creation-similar changes to the actual implementation of the spirit of the patent scope of this creation and its knowledge of the technology: iL ',: Bao ί in the mouth of this creative fan Any kind of decoration can be covered, the changes that can be easily considered or Xiu Qingbai 'are in the patent scope of the following case. Person
第9頁 M245664 圖式簡單說明 (1 )圖示說明 弟,一圖為習知無礙刷直流馬達保護電路方塊圖; 第二圖為習知無碳刷直流馬達保護電路之電路電壓分 配方塊圖; 第三圖為本創作無碳刷直流馬達保護電路方塊圖;及 第四圖為本創作無碳刷直流馬達保護電路之電路電壓 分配方塊圖。 (2 )圖號說明 習知: 22直流電源 24保護元件 2 6驅動電路 2 8直流馬達 2 6 1驅動I C 2 6 2霍爾元件 本創作: 1 0無碳刷直流馬達保護電路 1 2直流電源 1 4保護元件 1 6驅動電路 1 6 1驅動IC 1 6 2霍爾元件 1 8直流馬達 1 9參考電位The M245664 diagram on the ninth page (1) illustrates the diagram, one is a block diagram of a conventional brushless DC motor protection circuit; the second is a circuit voltage distribution block diagram of a conventional carbon brushless DC motor protection circuit The third figure is the block diagram of the protection circuit of the carbonless brushless DC motor of the creation; and the fourth figure is the block diagram of the voltage distribution of the circuit of the protection of the carbonless brushless DC motor. (2) Description of drawing number: 22 DC power source 24 protection element 2 6 drive circuit 2 8 DC motor 2 6 1 drive IC 2 6 2 Hall element Original creation: 1 0 carbon brushless DC motor protection circuit 1 2 DC power source 1 4 Protective element 1 6 Drive circuit 1 6 1 Drive IC 1 6 2 Hall element 1 8 DC motor 1 9 Reference potential
第10頁 M245664 圖式簡單說明 R電阻器 C電容器 millPage 10 M245664 Schematic description R resistor C capacitor mill
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8922964B2 (en) | 2012-09-28 | 2014-12-30 | Industrial Technology Research Institute | Motor controller with reverse-bias preventing mechanism |
TWI558047B (en) * | 2015-07-01 | 2016-11-11 | 茂達電子股份有限公司 | Motor driving circuit with power reversal protection and fan device |
-
2003
- 2003-10-31 TW TW92219368U patent/TWM245664U/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8922964B2 (en) | 2012-09-28 | 2014-12-30 | Industrial Technology Research Institute | Motor controller with reverse-bias preventing mechanism |
TWI558047B (en) * | 2015-07-01 | 2016-11-11 | 茂達電子股份有限公司 | Motor driving circuit with power reversal protection and fan device |
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