CN107947145B - A kind of anti-battery reversal connection circuit of charged pool power module - Google Patents

A kind of anti-battery reversal connection circuit of charged pool power module Download PDF

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CN107947145B
CN107947145B CN201711326339.0A CN201711326339A CN107947145B CN 107947145 B CN107947145 B CN 107947145B CN 201711326339 A CN201711326339 A CN 201711326339A CN 107947145 B CN107947145 B CN 107947145B
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current node
battery
line
power mos
resistor
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CN107947145A (en
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肖波
李松磊
张洪镇
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Zhengzhou Yunhai Information Technology Co Ltd
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Zhengzhou Yunhai Information Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本发明涉及电源防护技术领域，提供一种带电池电源模块的防电池反接电路，包括串接在正母排DC+上的二极管D124、继电器K103以及由功率MOS管Q306和功率MOS管Q307组成的信号驱动电路，当电池反接时，继电器K103不吸合，功率MOS管Q306和功率MOS管Q307不导通，电池产生的反向电压加载在二极管D124上，从而保护电路上的元器件，提升产品质量。

The invention relates to the technical field of power supply protection, and provides an anti-battery reverse connection circuit with a battery power supply module, comprising a diode D124 connected in series on a positive busbar DC+, a relay K103, and a power MOS transistor Q306 and a power MOS transistor Q307. In the signal drive circuit, when the battery is reversely connected, the relay K103 does not pull in, the power MOS transistor Q306 and the power MOS transistor Q307 are not conducting, and the reverse voltage generated by the battery is loaded on the diode D124, thereby protecting the components on the circuit and improving the product quality.

Description

A kind of anti-battery reversal connection circuit of charged pool power module
Technical field
The invention belongs to a kind of anti-battery of power supply technical field more particularly to charged pool power module reversal connection electricity Road.
Background technique
In order to power in system cut-off to disk array or entire disk array, after many storage power configurations have now Standby battery can save relevant information in computer room power-off, and this battery is usually to be embedded in power source internal, by golden finger or Terminal is connected with power supply, can have detachable handle, and battery is facilitated to install or replace.
Wherein, the output of backup battery is positive minus two terminals, for convenience of installing and dismantling battery, when structure designs Generally by the cell shapes after encapsulation and the space of battery is installed all it is made into symmetrically, once so backup battery is being just Cathode is reversed to be likely to result in burning for power supply media board.
Summary of the invention
The purpose of the present invention is to provide a kind of anti-batteries of charged pool power module to be reversely connected circuit, it is intended to solve existing skill In art when the positive and negative anodes of backup battery are reversed, the problem of burning of power supply media board is caused.
The invention is realized in this way a kind of anti-battery of charged pool power module is reversely connected circuit, the anti-battery reversal connection Circuit includes that relay a K103, the relay K103 is equipped with stationary contact 3, normally opened contact 5, normally-closed contact 4 and electromagnet Input terminal 2 and output end 1, the normally opened contact 5 of the relay K103 connect with the positive busbar DC+ of backup battery, it is described after Route between the normally opened contact 5 and positive busbar DC+ of electric appliance K103 is equipped with the first current node, and first current node is drawn Diode 124 is connected on route out, the other end of the diode 124 is connected to the stationary contact 3 of the relay K103, Route between the diode 124 and the stationary contact 3 of the relay K103 is equipped with the second current node, second electricity Flow connection that node is drawn to resistance R373, the normally opened contact 5 of the relay K103 and first current node it Between route be equipped with the 5th current node, the connection that the 5th current node is drawn to negative busbar D-；
The input terminal 2 of the electromagnet connects the drain electrode of power MOS pipe Q306, and the output end 1 of the electromagnet connects The end VCC2；
The source electrode of the power MOS pipe Q306 is connect after being sequentially connected in series two diode D329 with the end VCC2, the power The grid of metal-oxide-semiconductor Q306 is connected to the source electrode of power MOS pipe Q307, the drain electrode series resistor R374 of the power MOS pipe Q307 After be connected to the end VCC2, the end VCC2, the resistance R377 are connected to after the grid series resistor R377 of the power MOS pipe Q307 It is connect after concatenation bleeder circuit with the positive busbar DC+ of backup battery.
As an improvement scheme, between the diode 124 and second current node route be equipped with resistance R128。
As an improvement scheme, route between the output end 1 of the electromagnet and the end VCC2 is equipped with electricity Hinder R129；
Capacitor C143 is parallel on the resistance R129.
As an improvement scheme, the power MOS pipe Q306 drain electrode the input terminal 2 of the electromagnet between Route is equipped with the 4th current node, and the route between two diode D329 is equipped with third current node, the third electricity Connection that node is drawn is flowed to the 4th current node.
As an improvement scheme, the bleeder circuit include be serially connected between the resistance R377 and positive busbar DC+ Route on capacitor C347, resistance R378, capacitor D325 and resistance R373.
As an improvement scheme, route between the capacitor C347 and resistance C378 is equipped with the 6th electric current section Point is successively arranged the 7th current node on the route between the 6th current node and the source electrode of the power MOS pipe Q306；
Route between the source electrode of the power MOS pipe Q307 and the grid of the power MOS pipe Q306 is equipped with the 8th Current node；
It is connect after the route series resistor R385 that 7th current node is drawn with the 8th current node.
As an improvement scheme, the route between route and the negative busbar D- that the 5th current node is drawn On be serially connected with resistance R148；
Route between the resistance R148 and the negative busbar D- is equipped with the 9th current node, the resistance R148 with The tenth current node is equipped between 5th current node, between the 9th current node and the tenth current node Capacitor C140 and capacitor C141 are in series in connection line.
As an improvement scheme, route between the capacitor C140 and capacitor C141 is equipped with the 11st electric current section Point is connect after the route series diode D125 that the 11st current node is drawn with the negative busbar D-.
As an improvement scheme, the route between the output end 1 of the electromagnet and the resistance R129 is equipped with 12nd current node；
Route between the input terminal 2 of the electromagnet and the drain electrode of the power MOS pipe Q306 is equipped with the 13rd electricity Flow node；
Series diode D114 on route between 12nd current node and the 13rd current node.
In embodiments of the present invention, the anti-battery reversal connection circuit of charged pool power module includes being serially connected on positive busbar DC+ Diode D124, relay K103 and the signal drive circuit that is made of power MOS pipe Q306 and power MOS pipe Q307, When battery reversal connection, relay K103 is not attracted, and power MOS pipe Q306 and power MOS pipe Q307 are not turned on, and battery generates anti- To voltage-drop loading on diode D124, to protect the component on circuit, Improving The Quality of Products.
Detailed description of the invention
Fig. 1 is the schematic diagram of the anti-battery reversal connection circuit of charged pool power module provided by the invention；
Wherein, the first current node of 1-, the second current node of 2-, 3- third current node, the 4th current node of 4-, 5- Five current nodes, the 6th current node of 6-, the 7th current node of 7-, the 8th current node of 8-, the 9th current node of 9-, 10- Ten current nodes, the 11st current node of 11-, the 12nd current node of 12-.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
Fig. 1 shows the schematic diagram of the anti-battery reversal connection circuit of charged pool power module provided by the invention, wherein in figure Only give part related to the embodiment of the present invention.
Anti- battery reversal connection circuit includes a relay K103, and the relay K103 is equipped with stationary contact 3, normally opened contact 5, often The input terminal 2 and output end 1 of closed contact 4 and electromagnet, the normally opened contact 5 of the relay K103 and the positive pole of backup battery DC+ connection is arranged, the route between the normally opened contact 5 and positive busbar DC+ of the relay K103 is equipped with the first current node, institute It states and is connected with diode 124 on the route of the first current node extraction, the other end of the diode 124 is connected to the relay The stationary contact 3 of device K103, the route between the diode 124 and the stationary contact 3 of the relay K103 are equipped with the second electricity Flow node, the connection that second current node is drawn to resistance R373, the normally opened contact 5 of the relay K103 and institute It states route between the first current node and is equipped with the 5th current node, the connection that the 5th current node is drawn is to negative Busbar D-；
The input terminal 2 of the electromagnet connects the drain electrode of power MOS pipe Q306, and the output end 1 of the electromagnet connects The end VCC2；
The source electrode of the power MOS pipe Q306 is connect after being sequentially connected in series two diode D329 with the end VCC2, the power The grid of metal-oxide-semiconductor Q306 is connected to the source electrode of power MOS pipe Q307, the drain electrode series resistor R374 of the power MOS pipe Q307 After be connected to the end VCC2, the end VCC2, the resistance R377 are connected to after the grid series resistor R377 of the power MOS pipe Q307 It is connect after concatenation bleeder circuit with the positive busbar DC+ of backup battery.
Wherein, as shown in connection with fig. 1, route is equipped with resistance between the diode 124 and second current node R128。
In embodiments of the present invention, the route between the output end 1 of electromagnet and the end VCC2 is equipped with resistance R129；
Capacitor C143 is parallel on resistance R129.
In this embodiment, the route between the drain electrode and the input terminal 2 of the electromagnet of power MOS pipe Q306 is equipped with 4th current node, the route between two diode D329 are equipped with third current node, and the third current node is drawn Connection to the 4th current node.
In embodiments of the present invention, the bleeder circuit includes being serially connected between the resistance R377 and positive busbar DC+ Capacitor C347, resistance R378, capacitor D325 and resistance R373 on route.
In this embodiment, the route between the capacitor C347 and resistance C378 is equipped with the 6th current node, described The 7th current node is successively arranged on route between 6th current node and the source electrode of the power MOS pipe Q306；
Route between the source electrode of power MOS pipe Q307 and the grid of the power MOS pipe Q306 is equipped with the 8th electric current Node；
It is connect after the route series resistor R385 that 7th current node is drawn with the 8th current node.
As shown in connection with fig. 1, electricity is serially connected on the route between route and the negative busbar D- that the 5th current node is drawn Hinder R148；
Route between resistance R148 and the negative busbar D- is equipped with the 9th current node, the resistance R148 with it is described The tenth current node, the connection between the 9th current node and the tenth current node are equipped between 5th current node Capacitor C140 and capacitor C141 are in series on route.
In embodiments of the present invention, the route between the capacitor C140 and capacitor C141 is equipped with the 11st electric current section Point is connect after the route series diode D125 that the 11st current node is drawn with the negative busbar D-.
In embodiments of the present invention, the route between the output end 1 of the electromagnet and the resistance R129 is equipped with the 12 current nodes；
Route between the input terminal 2 of the electromagnet and the drain electrode of the power MOS pipe Q306 is equipped with the 13rd electricity Flow node；
Series diode D114 on route between 12nd current node and the 13rd current node.
In order to make it easy to understand, providing the anti-battery reversal connection circuit of charged pool power module provided by the invention in conjunction with Fig. 1 Working principle:
The end VCC2 be 15V supply voltage, HOTPLUG signal be control relay coil signal, power MOS pipe Q306 with Power MOS pipe Q307 forms two-stage amplifying circuit, to drive HOTPLUG signal；
When power MOS pipe Q307 be connected, power MOS pipe Q306 saturation conduction, HOTPLUG signal be low level when, relay Device K103 is attracted.Conversely, then K103 is disconnected for power MOS pipe Q306 cut-off when power MOS pipe Q307 ends；
The key whether control relay is attracted is exactly to control the base potential of power MOS pipe Q307.Power MOS pipe Q307 Base stage by diode D325 and resistance R373 be connected to output positive busbar DC+；
Under normal circumstances, the current potential of positive busbar DC+ is higher than negative busbar DC-, and diode D325 bears blocking voltage, positive pole The current potential of row DC+ does not change the grid potential of power MOS pipe Q307.If battery is reversed, the current potential of the current potential ratio DC- of DC+ is low, then The grid of power MOS pipe Q307 is determined by the current potential of R373, R377 and R378 bleeder circuit formed and DC+, VCC2, DC- Current potential.When the negative potential of DC+ is sufficiently low, power MOS pipe Q307 cut-off, then power MOS pipe Q306 ends, and relay K103 is not It is attracted, to realize the purpose of protection output capacitance.
In embodiments of the present invention, the positive and negative of voltage is judged from output port collection voltages, if on the occasion of then normal work Make, if voltage is negative value, is switched off output relay or power MOS.
In embodiments of the present invention, the anti-battery reversal connection circuit of charged pool power module includes being serially connected on positive busbar DC+ Diode D124, relay K103 and the signal drive circuit that is made of power MOS pipe Q306 and power MOS pipe Q307, When battery reversal connection, relay K103 is not attracted, and power MOS pipe Q306 and power MOS pipe Q307 are not turned on, and battery generates anti- To voltage-drop loading on diode D124, to protect the component on circuit, Improving The Quality of Products.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (9)

1.一种带电池电源模块的防电池反接电路，其特征在于，所述防电池反接电路包括一继电器K103，所述继电器K103设有静触点3、常开触点5、常闭触点4以及电磁铁的输入端2和输出端1，所述继电器K103的常开触点5与后备电池的正母排DC+连接，所述继电器K103的常开触点5与正母排DC+之间的线路上设有第一电流节点，所述第一电流节点引出的线路上连接有二极管124，所述二极管124的另一端连接在所述继电器K103的静触点3，所述二极管124与所述继电器K103的静触点3之间的线路上设有第二电流节点，所述第二电流节点引出的线路连接至电阻R373，所述继电器K103的常开触点5与所述第一电流节点之间的线路上设有第五电流节点，所述第五电流节点引出的线路连接至负母排D-；1. an anti-battery reverse-connection circuit with a battery power supply module, is characterized in that, described anti-battery reverse-connection circuit comprises a relay K103, and described relay K103 is provided with static contact 3, normally open contact 5, normally closed Contact 4 and the input end 2 and output end 1 of the electromagnet, the normally open contact 5 of the relay K103 is connected to the positive busbar DC+ of the backup battery, and the normally open contact 5 of the relay K103 is connected to the positive busbar DC+ There is a first current node on the line between the two, and a diode 124 is connected to the line drawn from the first current node. The other end of the diode 124 is connected to the static contact 3 of the relay K103. The diode 124 A second current node is provided on the line between the relay K103 and the static contact 3 of the relay K103, the line drawn from the second current node is connected to the resistor R373, and the normally open contact 5 of the relay K103 is connected to the first current node. A fifth current node is provided on the line between the current nodes, and the line drawn from the fifth current node is connected to the negative busbar D-; 所述电磁铁的输入端2连接功率MOS管Q306的漏极，所述电磁铁的输出端1连接VCC2端；The input end 2 of the electromagnet is connected to the drain of the power MOS transistor Q306, and the output end 1 of the electromagnet is connected to the VCC2 end; 所述功率MOS管Q306的源极依次串接两个二极管D329后与VCC2端连接，所述功率MOS管Q306的栅极连接至功率MOS管Q307的源极，所述功率MOS管Q307的漏极串接电阻R374后连接至VCC2端，所述功率MOS管Q307的栅极串接电阻R377后连接至VCC2端，所述电阻R377串接分压电路后与后备电池的正母排DC+连接。The source of the power MOS transistor Q306 is connected in series with two diodes D329 and then connected to the VCC2 terminal, the gate of the power MOS transistor Q306 is connected to the source of the power MOS transistor Q307, and the drain of the power MOS transistor Q307 The resistor R374 is connected in series to the VCC2 terminal, the gate of the power MOS transistor Q307 is connected in series with the resistor R377 and then connected to the VCC2 terminal. 2.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述二极管124与所述第二电流节点之间线路上设有电阻R128。2 . The anti-battery reverse connection circuit with a battery power module according to claim 1 , wherein a resistor R128 is provided on the line between the diode 124 and the second current node. 3 . 3.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述电磁铁的输出端1与所述VCC2端之间的线路上设有电阻R129；3. The anti-battery reverse connection circuit with a battery power module according to claim 1, wherein a resistor R129 is provided on the line between the output end 1 of the electromagnet and the VCC2 end; 所述电阻R129上并联有电容C143。A capacitor C143 is connected in parallel with the resistor R129. 4.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述功率MOS管Q306的漏极与所述电磁铁的输入端2之间的线路上设有第四电流节点，两个二极管D329之间的线路上设有第三电流节点，所述第三电流节点引出的线路连接至所述第四电流节点。4. The anti-battery reverse connection circuit with a battery power module according to claim 1, wherein a circuit between the drain of the power MOS transistor Q306 and the input end 2 of the electromagnet is provided with a first Four current nodes, a third current node is provided on the line between the two diodes D329, and the line drawn from the third current node is connected to the fourth current node. 5.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述分压电路包括串接在所述电阻R377和正母排DC+之间的线路上的电容C347、电阻R378、电容D325和电阻R373。5. The anti-battery reverse connection circuit with a battery power module according to claim 1, wherein the voltage divider circuit comprises a capacitor C347, a capacitor C347, Resistor R378, Capacitor D325 and Resistor R373. 6.根据权利要求5所述的带电池电源模块的防电池反接电路，其特征在于，所述电容C347和电阻C378之间的线路上设有第六电流节点，所述第六电流节点与所述功率MOS管Q306的源极之间的线路上依次设有第七电流节点；6. The anti-battery reverse-connection circuit with a battery power module according to claim 5, wherein a sixth current node is provided on the line between the capacitor C347 and the resistor C378, and the sixth current node is connected to the circuit. A seventh current node is sequentially arranged on the line between the sources of the power MOS transistor Q306; 所述功率MOS管Q307的源极与所述功率MOS管Q306的栅极之间的线路上设有第八电流节点；An eighth current node is provided on the line between the source of the power MOS transistor Q307 and the gate of the power MOS transistor Q306; 所述第七电流节点引出的线路串接电阻R385后与所述第八电流节点连接。The line drawn from the seventh current node is connected to the eighth current node after being connected to the resistor R385 in series. 7.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述第五电流节点引出的线路与所述负母排D-之间的线路上串接有电阻R148；7 . The anti-battery reverse connection circuit with a battery power module according to claim 1 , wherein a resistor is connected in series between the line drawn from the fifth current node and the line between the negative busbar D- 7 . R148; 所述电阻R148与所述负母排D-之间的线路上设有第九电流节点，所述电阻R148与所述第五电流节点之间设有第十电流节点，所述第九电流节点与所述第十电流节点之间的连接线路上串联有电容C140和电容C141。A ninth current node is set on the line between the resistor R148 and the negative busbar D-, a tenth current node is set between the resistor R148 and the fifth current node, and the ninth current node A capacitor C140 and a capacitor C141 are connected in series with the connection line between the tenth current node. 8.根据权利要求7所述的带电池电源模块的防电池反接电路，其特征在于，所述电容C140和电容C141之间的线路上设有第十一电流节点，所述第十一电流节点引出的线路串接二极管D125后与所述负母排D-连接。8 . The anti-battery reverse connection circuit with a battery power module according to claim 7 , wherein an eleventh current node is provided on the line between the capacitor C140 and the capacitor C141 , and the eleventh current The line drawn from the node is connected to the negative bus bar D- after being connected in series with the diode D125. 9.根据权利要求1所述的带电池电源模块的防电池反接电路，其特征在于，所述电磁铁的输出端1与所述电阻R129之间的线路上设有第十二电流节点；9. The anti-battery reverse connection circuit with a battery power module according to claim 1, wherein a twelfth current node is provided on the line between the output end 1 of the electromagnet and the resistor R129; 所述电磁铁的输入端2与所述功率MOS管Q306的漏极之间的线路上设有第十三电流节点；A thirteenth current node is provided on the line between the input end 2 of the electromagnet and the drain of the power MOS transistor Q306; 所述第十二电流节点与所述第十三电流节点之间的线路上串接二极管D114。A diode D114 is connected in series between the twelfth current node and the thirteenth current node.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3368124B2 (en) * 1995-10-26 2003-01-20 キヤノン株式会社 Overcharge prevention circuit
CN202586793U (en) * 2012-03-05 2012-12-05 无锡盛莱得新能源科技有限公司 Photovoltaic grid-connected inverter with input reverse-connection protection
CN103199503A (en) * 2013-03-29 2013-07-10 奇瑞汽车股份有限公司 Protective circuit of vehicle-mounted charger
CN204349564U (en) * 2014-11-12 2015-05-20 宁波中博电器有限公司 Solar recharging all-in-one
CN105978123A (en) * 2016-06-06 2016-09-28 东南大学 Dynamic adjustment system for phase shift full bridge type vehicle-mounted charger dead zone time
CN206041474U (en) * 2016-09-22 2017-03-22 东莞市港奇电子有限公司 Power supply protection circuit of battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3368124B2 (en) * 1995-10-26 2003-01-20 キヤノン株式会社 Overcharge prevention circuit
CN202586793U (en) * 2012-03-05 2012-12-05 无锡盛莱得新能源科技有限公司 Photovoltaic grid-connected inverter with input reverse-connection protection
CN103199503A (en) * 2013-03-29 2013-07-10 奇瑞汽车股份有限公司 Protective circuit of vehicle-mounted charger
CN204349564U (en) * 2014-11-12 2015-05-20 宁波中博电器有限公司 Solar recharging all-in-one
CN105978123A (en) * 2016-06-06 2016-09-28 东南大学 Dynamic adjustment system for phase shift full bridge type vehicle-mounted charger dead zone time
CN206041474U (en) * 2016-09-22 2017-03-22 东莞市港奇电子有限公司 Power supply protection circuit of battery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
防止MOSFET驱动器与电池反接;红林;《电子设计应用》;20030731(第07期);第94页

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