CN107947145A - 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 PDFInfo
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- CN107947145A CN107947145A CN201711326339.0A CN201711326339A CN107947145A CN 107947145 A CN107947145 A CN 107947145A CN 201711326339 A CN201711326339 A CN 201711326339A CN 107947145 A CN107947145 A CN 107947145A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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- 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
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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 present invention relates to the technical field of power supply protection, and provides a battery reverse connection prevention circuit with a battery power module, including a diode D124 connected in series to the positive busbar DC+, a relay K103, and a power MOS tube Q306 and a power MOS tube Q307. 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 do not conduct, and the reverse voltage generated by the battery is loaded on the diode D124, thereby protecting the components on the circuit and improving product quality.
Description
技术领域technical field
本发明属于电源防护技术领域，尤其涉及一种带电池电源模块的防电池反接电路。The invention belongs to the technical field of power supply protection, and in particular relates to a battery reverse connection prevention circuit with a battery power supply module.
背景技术Background technique
为了在系统断电时给磁盘阵列或整个磁盘阵列供电，现在很多存储电源配置有后备电池，在机房断电时能够保存相关信息，这种电池一般是镶嵌在电源内部，通过金手指或端子与电源相连，会带有可拆卸把手，方便电池安装或更换。In order to supply power to the disk array or the entire disk array when the system is powered off, many storage power supplies are now equipped with backup batteries, which can save relevant information when the computer room is powered off. This kind of battery is generally embedded in the power supply, connected to the power supply through gold fingers or terminals. Connected to the power supply, it will have a detachable handle for easy battery installation or replacement.
其中，后备电池的输出为一正一负两个端子，为方便安装及拆卸电池，结构设计时一般将封装后的电池形状及安装电池的空间全部做成对称的，这样一来一旦后备电池的正负极接反可能会造成电源板卡的烧毁。Among them, the output of the backup battery is two terminals, one positive and one negative. Reverse connection of positive and negative poles may cause burning of the power board.
发明内容Contents of the invention
本发明的目的在于提供一种带电池电源模块的防电池反接电路，旨在解决现有技术中当后备电池的正负极接反时，造成电源板卡的烧毁的问题。The object of the present invention is to provide an anti-battery reverse connection circuit with a battery power supply module, aiming to solve the problem in the prior art that the power supply board is burned when the positive and negative poles of the backup battery are reversed.
本发明是这样实现的，一种带电池电源模块的防电池反接电路，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-；The present invention is achieved in this way, a battery reverse connection prevention circuit with a battery power module, the battery reverse connection prevention circuit includes a relay K103, the relay K103 is provided with a static contact 3, a normally open contact 5, a normally open contact The closed contact 4 and the input terminal 2 and output terminal 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 A first current node is provided on the line between DC+, a diode 124 is connected to the line drawn from the first current node, and the other end of the diode 124 is connected to the static contact 3 of the relay K103, and the diode 124 The line between 124 and the static contact 3 of the relay K103 is provided with a second current node, and the line drawn from the second current node is connected to a resistor R373, and the normally open contact 5 of the relay K103 is connected to the A fifth current node is provided on the line between the first 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 terminal 2 of the electromagnet is connected to the drain of the power MOS transistor Q306, and the output terminal 1 of the electromagnet is connected to the VCC2 terminal;
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 to the VCC2 terminal after two diodes D329 are connected in series, 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 to the VCC2 terminal after the resistor R377 is connected in series, and the resistor R377 is connected in series to the voltage divider circuit and connected to the positive busbar DC+ of the backup battery.
作为一种改进的方案，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。As an improved solution, a resistor R128 is provided on the line between the diode 124 and the second current node.
作为一种改进的方案，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；As an improved solution, a resistor R129 is provided on the line between the output terminal 1 of the electromagnet and the VCC2 terminal;
所述电阻R129上并联有电容C143。A capacitor C143 is connected in parallel with the resistor R129.
作为一种改进的方案，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。As an improved solution, a fourth current node is provided on the circuit between the drain of the power MOS transistor Q306 and the input terminal 2 of the electromagnet, and a third current node is provided on the circuit between the two diodes D329. A current node, the line drawn from the third current node is connected to the fourth current node.
作为一种改进的方案，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。As an improved solution, the voltage dividing circuit includes a capacitor C347, a resistor R378, a capacitor D325 and a resistor R373 connected in series on the line between the resistor R377 and the positive busbar DC+.
作为一种改进的方案，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；As an improved solution, a sixth current node is provided on the line between the capacitor C347 and the resistor C378, and the line between the sixth current node and the source of the power MOS transistor Q306 is sequentially provided with seventh current node;
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 leading out from the seventh current node is connected to the eighth current node after being connected in series with a resistor R385.
作为一种改进的方案，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；As an improved solution, a resistor R148 is connected in series between the line drawn from the fifth current node and the negative busbar D-;
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 provided on the line between the resistor R148 and the negative busbar D-, a tenth current node is provided 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 tenth current node.
作为一种改进的方案，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。As an improved solution, an eleventh current node is provided on the line between the capacitor C140 and the capacitor C141, and the line drawn from the eleventh current node is connected to the negative busbar D- connect.
作为一种改进的方案，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；As an improved solution, a twelfth current node is provided on the line between the output terminal 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 terminal 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 on the line between the twelfth current node and the thirteenth current node.
在本发明实施例中，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。In the embodiment of the present invention, the anti-battery reverse connection circuit with a battery power module includes a diode D124 connected in series to the positive busbar DC+, a relay K103, and a signal drive circuit composed of a power MOS transistor Q306 and a power MOS transistor Q307. When the battery is reversely connected, the relay K103 does not pull in, the power MOS transistor Q306 and the power MOS transistor Q307 do not conduct, and the reverse voltage generated by the battery is loaded on the diode D124, thereby protecting the components on the circuit and improving product quality.
附图说明Description of drawings
图1是本发明提供的带电池电源模块的防电池反接电路的示意图；Fig. 1 is the schematic diagram of the anti-battery reverse connection circuit with battery power supply module provided by the present invention;
其中，1-第一电流节点，2-第二电流节点，3-第三电流节点，4-第四电流节点，5-第五电流节点，6-第六电流节点，7-第七电流节点，8-第八电流节点，9-第九电流节点，10-第十电流节点，11-第十一电流节点，12-第十二电流节点。Among them, 1-first current node, 2-second current node, 3-third current node, 4-fourth current node, 5-fifth current node, 6-sixth current node, 7-seventh current node , 8-eighth current node, 9-ninth current node, 10-tenth current node, 11-eleventh current node, 12-twelfth current node.
具体实施方式Detailed ways
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
图1示出了本发明提供的带电池电源模块的防电池反接电路的示意图，其中，图中仅给出了与本发明实施例相关的部分。Fig. 1 shows a schematic diagram of an anti-battery reverse connection circuit with a battery power supply module provided by the present invention, wherein only the parts related to the embodiment of the present invention are shown in the figure.
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-；The anti-battery reverse connection circuit includes a relay K103, and the relay K103 is provided with a static contact 3, a normally open contact 5, a normally closed contact 4, and an input terminal 2 and an output terminal 1 of the electromagnet. The open contact 5 is connected to the positive busbar DC+ of the backup battery, and the line between the normally open contact 5 of the relay K103 and the positive busbar DC+ is provided with a first current node, and the line drawn from the first current node A diode 124 is connected to it, and the other end of the diode 124 is connected to the static contact 3 of the relay K103, and a second current node is arranged on the line between the diode 124 and the static contact 3 of the relay K103 , the line drawn from the second current node is connected to the resistor R373, the line between the normally open contact 5 of the relay K103 and the first current node is provided with a fifth current node, and the fifth current node The outgoing line 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 terminal 2 of the electromagnet is connected to the drain of the power MOS transistor Q306, and the output terminal 1 of the electromagnet is connected to the VCC2 terminal;
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 to the VCC2 terminal after two diodes D329 are connected in series, 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 to the VCC2 terminal after the resistor R377 is connected in series, and the resistor R377 is connected in series to the voltage divider circuit and connected to the positive busbar DC+ of the backup battery.
其中，结合图1所示，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。Wherein, as shown in FIG. 1 , a resistor R128 is provided on the line between the diode 124 and the second current node.
在本发明实施例中，电磁铁的输出端1与所述VCC2端之间的线路上设有电阻R129；In the embodiment of the present invention, a resistor R129 is provided on the line between the output terminal 1 of the electromagnet and the VCC2 terminal;
电阻R129上并联有电容C143。A capacitor C143 is connected in parallel with the resistor R129.
在该实施例中，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。In this embodiment, a fourth current node is provided on the circuit between the drain of the power MOS transistor Q306 and the input terminal 2 of the electromagnet, and a third current node is provided on the circuit between the two diodes D329, A line drawn from the third current node is connected to the fourth current node.
在本发明实施例中，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。In the embodiment of the present invention, the voltage dividing circuit includes a capacitor C347, a resistor R378, a capacitor D325 and a resistor R373 connected in series on the line between the resistor R377 and the positive busbar DC+.
在该实施例中，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；In this embodiment, a sixth current node is provided on the line between the capacitor C347 and the resistor C378, and a sixth current node is sequentially provided on the line between the sixth current node and the source of the power MOS transistor Q306. Seven current nodes;
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;
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 leading out from the seventh current node is connected to the eighth current node after being connected in series with a resistor R385.
结合图1所示，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；As shown in Figure 1, a resistor R148 is connected in series between the line drawn from the fifth current node and the negative busbar D-;
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 provided on the line between the resistor R148 and the negative busbar D-, a tenth current node is provided between the resistor R148 and the fifth current node, and the ninth current node is connected to the fifth current node. A capacitor C140 and a capacitor C141 are connected in series on the connecting line between the tenth current nodes.
在本发明实施例中，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。In the embodiment of the present invention, an eleventh current node is provided on the line between the capacitor C140 and the capacitor C141, and the line drawn from the eleventh current node is connected with the negative busbar D- connect.
在本发明实施例中，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；In the embodiment of the present invention, a twelfth current node is provided on the line between the output terminal 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 terminal 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 on the line between the twelfth current node and the thirteenth current node.
为了便于理解，结合图1给出本发明提供的带电池电源模块的防电池反接电路的工作原理：For ease of understanding, the working principle of the anti-battery reverse connection circuit with battery power module provided by the present invention is given in conjunction with FIG. 1:
VCC2端为15V供电电压，HOTPLUG信号为控制继电器线圈的信号，功率MOS管Q306和功率MOS管Q307组成两级放大电路，来驱动HOTPLUG信号；The VCC2 terminal is the 15V power supply voltage, the HOTPLUG signal is the signal for controlling the relay coil, and the power MOS transistor Q306 and the power MOS transistor Q307 form a two-stage amplifier circuit to drive the HOTPLUG signal;
当功率MOS管Q307导通，功率MOS管Q306饱和导通，HOTPLUG信号为低电平时，继电器K103吸合。反之，当功率MOS管Q307截止，功率MOS管Q306截止则K103断开；When the power MOS transistor Q307 is turned on, the power MOS transistor Q306 is saturated and turned on, and the HOTPLUG signal is at low level, the relay K103 is turned on. On the contrary, when the power MOS transistor Q307 is cut off, the power MOS transistor Q306 is cut off, and K103 is turned off;
控制继电器是否吸合的关键就是控制功率MOS管Q307的基极电位。功率MOS管Q307的基极通过二极管D325和电阻R373接至输出正母排DC+；The key to controlling whether the relay pulls in is to control the base potential of the power MOS transistor Q307. The base of the power MOS transistor Q307 is connected to the output positive busbar DC+ through the diode D325 and the resistor R373;
在正常情况下，正母排DC+的电位高于负母排DC-，二极管D325承受阻断电压，正母排DC+的电位不改变功率MOS管Q307的栅极电位。若电池接反，DC+的电位比DC-的电位低，则由R373、R377和R378组成的分压电路及DC+、VCC2、DC-的电位来确定功率MOS管Q307的栅极电位。当DC+的负电位足够低时，功率MOS管Q307截止，则功率MOS管Q306截止，继电器K103不吸合，从而实现保护输出电容的目的。Under normal circumstances, the potential of the positive busbar DC+ is higher than that of the negative busbar DC-, the diode D325 bears the blocking voltage, and the potential of the positive busbar DC+ does not change the gate potential of the power MOS transistor Q307. If the battery is reversed and the potential of DC+ is lower than that of DC-, the voltage divider circuit composed of R373, R377 and R378 and the potential of DC+, VCC2 and DC- determine the gate potential of the power MOS transistor Q307. When the negative potential of DC+ is low enough, the power MOS transistor Q307 is turned off, the power MOS transistor Q306 is turned off, and the relay K103 is not pulled in, so as to achieve the purpose of protecting the output capacitor.
在本发明实施例中，从输出端口采集电压来判断电压的正负，若为正值则正常工作，若电压为负值，就切断输出继电器或功率MOS。In the embodiment of the present invention, the voltage is collected from the output port to determine whether the voltage is positive or negative. If the voltage is positive, it will work normally. If the voltage is negative, the output relay or power MOS will be cut off.
在本发明实施例中，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。In the embodiment of the present invention, the anti-battery reverse connection circuit with a battery power module includes a diode D124 connected in series to the positive busbar DC+, a relay K103, and a signal drive circuit composed of a power MOS transistor Q306 and a power MOS transistor Q307. When the battery is reversely connected, the relay K103 does not pull in, the power MOS transistor Q306 and the power MOS transistor Q307 do not conduct, and the reverse voltage generated by the battery is loaded on the diode D124, thereby protecting the components on the circuit and improving product quality.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.
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