CN218216679U - Battery reverse connection prevention detection device - Google Patents
Battery reverse connection prevention detection device Download PDFInfo
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- CN218216679U CN218216679U CN202222677866.9U CN202222677866U CN218216679U CN 218216679 U CN218216679 U CN 218216679U CN 202222677866 U CN202222677866 U CN 202222677866U CN 218216679 U CN218216679 U CN 218216679U
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Abstract
The utility model relates to a reverse connection detection device is prevented to battery, reverse connection detection device is prevented to battery includes: the input end of the switch component is connected with the positive battery input end, and the output end of the switch component is connected with the positive pole of the UPS equipment; the battery reverse connection prevention detection circuit is connected in parallel between the battery positive connection end and the battery negative connection end, is connected with the input end of the switch assembly, and is used for generating a battery reverse connection signal when detecting that the battery positive connection end is connected with the battery negative electrode; the tripper control circuit is connected with the output end of the battery reverse connection prevention detection circuit and the control end of the switch assembly, and is used for controlling the switch assembly to be in a tripping state according to a received battery reverse connection signal, blocking the input of large current of the battery, even if the switch inside the switch assembly is closed, the contact inside the switch assembly cannot be switched on, the UPS equipment and personal safety are effectively protected, unnecessary loss is avoided, the circuit structure is simple, and the cost is effectively reduced.
Description
Technical Field
The utility model relates to a power protection technical field especially relates to a reverse connection detection device is prevented to battery.
Background
As an energy storage device capable of storing energy, a battery has been widely used in various fields such as aerospace, transportation, mobile communication, photovoltaic energy storage, and the like, and thus, management or application of the battery has been applied.
When a user uses an uninterruptible Power Supply (UPS for short) to charge and discharge a large battery, if the polarity of an output current line of the UPS equipment is reverse to that of the battery, the output current line is connected in series with rectified voltage in the UPS equipment, the current is large, a fuse is easily burnt out, the battery and the equipment can be damaged in serious conditions, personal safety can be injured, and even dangerous accidents such as serious fire disasters and the like which cannot be judged in advance can occur. The existing UPS power supply is designed with an anti-reverse diode, when a battery is reversely connected with the output current of equipment, the anti-reverse diode cuts off a loop, but the long-time reverse connection of the diode can also have unpredictable results. Therefore, the current UPS power supply design lacks a reverse-connection-prevention battery detection circuit.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a device for detecting reverse connection of a battery, which is disposed at the front end of a UPS power supply, and when the battery is connected reversely to the UPS device, a control switch assembly is in a trip state to block the input of a large current of the battery, so as to protect the UPS device and personal safety, avoid unnecessary loss, and reduce the cost effectively.
The utility model provides a detection device is prevented joining conversely by battery, include:
the input end of the switch component is connected with the positive battery input end, and the output end of the switch component is connected with the positive pole of the UPS equipment;
the battery reverse connection prevention detection circuit is connected between the battery positive connection end and the battery negative connection end in parallel, is connected with the input end of the switch assembly, and is used for generating a battery reverse connection signal when detecting that the battery positive connection end is connected with the battery negative electrode;
and the release control circuit is connected with the output end of the battery reverse connection prevention detection circuit and the control end of the switch assembly and is used for controlling the switch assembly to be in a release state according to the received battery reverse connection signal.
In one embodiment, the switch assembly comprises a plurality of groups of air switches and release units connected in parallel with each other;
each group of air switches has the input end connected with the positive battery input end and the output end connected with the positive pole of the UPS equipment;
and the release unit is connected with the control end of each group of air switches and is used for controlling each group of air switches to be in a release state by opening the brake when the battery reverse connection signal is received.
In one embodiment, the trip unit comprises a shunt trip.
In one embodiment, the battery reverse connection prevention detection device further includes:
a trip unit coil connected in series between the trip unit control circuit and the trip unit;
the fuse is connected between the output end of the switch assembly and the anode of the UPS equipment in series;
the first capacitor is connected between the anode of the UPS equipment and the cathode of the UPS equipment in parallel;
and the second capacitor is mutually connected with the first capacitor in parallel.
In one embodiment, the battery reverse connection prevention detection circuit includes:
a first current limiting unit, the first end of which is connected with the positive battery connecting end;
a first end of the second current limiting unit is connected with the battery negative access end;
the first end of the isolation optocoupler is connected with the second end of the first current limiting unit, the second end of the isolation optocoupler is connected with the second end of the second current limiting unit, the third end of the isolation optocoupler is grounded, the fourth end of the isolation optocoupler is connected with a direct current power supply, and the fifth end of the isolation optocoupler is connected with the release control circuit;
when the positive battery connection end is connected with the negative electrode of the battery, the isolation optocoupler is in a cut-off state, and the isolation optocoupler outputs a reverse battery connection signal; and
when the positive connection end of the battery is connected with the positive electrode of the battery, the isolation optocoupler is in a conduction state, and the isolation optocoupler outputs a positive connection signal of the battery.
In one embodiment, the battery reverse connection signal is a low level signal, and the battery forward connection signal is a high level signal.
In one embodiment, the first current limiting unit includes a resistor R1, a resistor R2, and a resistor R3 connected in series in sequence;
the second current limiting unit comprises a resistor R4, a resistor R5 and a resistor R6 which are sequentially connected in series.
In one embodiment, the battery reverse connection prevention detection circuit further includes:
a first voltage division unit, a first end of which is connected with both the first end of the isolation optocoupler and the second end of the first current limiting unit, and a second end of which is connected with both the second end of the isolation optocoupler and the second end of the second current limiting unit;
the transient diode is mutually connected with the first voltage division unit in parallel;
and the first end of the second voltage division unit is connected with the third end of the isolation optocoupler, the second end of the second voltage division unit is grounded, the third end of the second voltage division unit is connected with the fifth end of the isolation optocoupler, and the fourth end of the second voltage division unit is connected with the release control circuit.
In one embodiment, the first voltage division unit comprises a resistor R7 and a resistor R8 which are sequentially connected in series;
the second voltage division unit includes:
a first end of the resistor R9 is connected with a third end of the isolation optocoupler;
and the first end of the resistor R10 is connected with the second end of the resistor R9, the fifth end of the isolation optocoupler and the tripper control circuit, and the second end of the resistor R is grounded.
In one embodiment, the battery reverse connection prevention detection circuit further includes:
a resistor R11 having a first end connected to a dc power supply;
and the anode of the light-emitting diode is connected with the second end of the resistor R11, and the cathode of the light-emitting diode is connected with the fourth end of the isolation optocoupler.
In the utility model discloses in the battery prevents reverse-connection detection device that above-mentioned embodiment provided, through setting up the switch module, the battery prevents reverse-connection detection circuit and release control circuit, prevent reverse-connection detection device with the battery and set up in the front end of UPS, when the battery connects reversely with UPS equipment, the battery prevents reverse-connection detection circuit and detects the anti-reverse-connection signal of battery that generates, release control circuit is in the dropout state according to battery reverse-connection signal control switch module is instantaneous, block the input of battery heavy current, even close switch module internal switch, switch module internal contact can not put through yet, effectively protect UPS equipment and personal safety, avoid the unnecessary loss, and circuit structure is simple, effective reduce cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain drawings of other embodiments according to these drawings without creative efforts.
Fig. 1 is a schematic circuit structure diagram of a device for detecting reverse connection of a battery according to an embodiment of the present invention;
fig. 2 is a schematic structural circuit diagram of a battery reverse connection prevention detection device provided in another embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a reverse connection prevention detection circuit for a battery according to another embodiment of the present invention.
The reference numbers indicate: 10. a switch assembly; 20. a battery reverse connection prevention detection circuit; 30. a release control circuit; 21. a first current limiting unit; 22. a second current unit; 23. an isolation optocoupler; 24. a first voltage division unit; 25. and a second voltage division unit.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Where the terms "comprising," "having," and "including" are used herein, another component can be added unless an explicit limitation is used, such as "only," "consisting of … …," and the like. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "connecting" are used broadly and encompass, for example, direct connection, indirect connection via an intermediate, connection between two elements, or interaction between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In order to explain the above technical means of the present invention, the following description will be made by way of specific examples.
In an embodiment of the present invention, as shown in fig. 1, a battery reverse connection prevention detection device is provided, which includes a switch assembly 10, a battery reverse connection prevention detection circuit 20, and a release control circuit 30. The input end of the switch component 10 is connected with the positive battery access end BAT +, and the output end is connected with the positive electrode UPS _ BUS + of the UPS equipment; the battery reverse connection prevention detection circuit 20 is connected in parallel between the battery positive connection terminal BAT + and the battery negative connection terminal BAT-, is connected with the input end of the switch assembly 10, and is used for generating a battery reverse connection signal when detecting that the battery positive connection terminal BAT + is connected with the battery negative electrode; the release control circuit 30 is connected to both the output terminal of the battery reverse connection prevention detection circuit 20 and the control terminal of the switch assembly 10, and is used for controlling the switch assembly 10 to be in a tripping state according to the received battery reverse connection signal, and controlling the switch in advance, so that the battery access detection is completed at the front end of the UPS power supply equipment, and the effect of foreknowing and precedent is achieved, the battery is prevented from being accessed wrongly, and the UPS equipment and personal safety are protected.
In the utility model discloses in the anti-detection device that connects is prevented to battery that above-mentioned embodiment provided, through setting up the switch module, the battery prevents reverse-connection detection circuitry and release control circuit, prevent reverse-connection detection device with the battery and set up in the front end of UPS power, when battery and UPS equipment connect reversely, the battery prevents reverse-connection detection circuitry and detects the anti-signal that prevents of generation battery, release control circuit is in the dropout state according to battery reverse-connection signal control switch module is instantaneous, block the input of battery heavy current, even close switch module internal switch, switch module internal contact also can not put through, effectively protect UPS equipment and personal safety, avoid the unnecessary loss, and circuit structure is simple, effective reduce cost.
In one embodiment, the device for detecting reverse connection prevention of a battery further includes a controller MCU (not shown in the figure), and the controller MCU is connected to the circuit 20 for detecting reverse connection prevention of a battery, and is configured to receive a dry contact signal transmitted by the circuit 20 for detecting reverse connection prevention of a battery, and determine the dry contact signal, so as to alert a user through a display screen or a buzzer.
In one embodiment, as shown in fig. 2, the switch assembly 10 includes a plurality of sets of air switch and trip units connected in parallel with each other; the input end of each group of air switches is connected with the positive battery input end, and the output end of each group of air switches is connected with the positive electrode UPS _ BUS + of the UPS equipment; the release unit is connected to the control end of each air switch (not shown in the figure), and is used for controlling each air switch to be in a release state when receiving a reverse connection signal of the battery.
Above-mentioned tripper unit and multiunit air switch mode of combining each other, when the battery mistake inserts the battery access port, the tripper unit can trigger immediately for each air switch of group drops off, even air switch is closed, the inside contact of air switch also can not put through, jumps out in the twinkling of an eye, blocks the input of battery voltage, is showing the fail safe nature who has improved UPS equipment, prevents to connect conversely to cause the heavy current of battery to discharge and damage UPS equipment. If the battery is correctly connected, the battery reverse connection prevention detection circuit generates a battery forward connection signal, the release unit does not work, and the air switch is closed.
As an example, the trip unit includes, but is not limited to, a shunt trip; the shunt release is used for remotely operating the brake-separating control of the low-voltage circuit breaker, when the brake-separating operation is needed, the normally open button is pressed to enable the electromagnet of the shunt release to be electrified and attract the armature, and the free release mechanism is pushed through the transmission mechanism to enable the low-voltage circuit breaker to be subjected to brake-separating.
Referring to fig. 2, the battery reverse connection prevention detection apparatus further includes a release coil, a fuse F1, a first capacitor C1, and a second capacitor C2. Specifically, a release coil is connected in series between a release control circuit and a release unit; the fuse F1 is connected in series between the output end of the switch assembly 10 and the anode UPS _ BUS + of the UPS equipment; the first capacitor C1 is connected between the anode UPS _ BUS + of the UPS device and the cathode UPS _ BUS-of the UPS device in parallel; the second capacitor C2 is connected in parallel with the first capacitor C1.
In one embodiment, as shown in FIG. 3, the battery reverse connection prevention detection circuit 20 includes: a first current limiting unit 21, a second current limiting unit 22 and an isolation optocoupler 23. A first end of the first current limiting unit 21 is connected to the positive battery access terminal BAT +; a first end of the second current limiting unit 22 is connected with the battery negative access terminal BAT-; the first end of the isolation optocoupler 23 is connected with the second end of the first current limiting unit 21, the second end of the isolation optocoupler 23 is connected with the second end of the second current limiting unit 22, the third end of the isolation optocoupler 23 is grounded, the fourth end of the isolation optocoupler 23 is connected with a direct current power supply VDD, and the fifth end of the isolation optocoupler 23 is connected with the release control circuit 20.
Specifically, when the positive battery access terminal BAT + is connected to the negative electrode of the battery, the isolation optocoupler 23 is in a cut-off state, and the isolation optocoupler 23 outputs a battery reverse connection signal; and when the positive battery connection end BAT + is connected with the positive electrode of the battery, the isolation optocoupler 23 is in a conducting state, and the isolation optocoupler outputs a positive battery connection signal.
As an example, the battery reverse connection signal is a low level signal, and the battery forward connection signal is a high level signal.
As an example, the isolation optocoupler 23 is formed by combining a photodiode D2 and a phototransistor, converts an electrical signal input from the positive electrode of the battery into an optical signal, and converts the optical signal into an electrical signal again, so that unidirectional transmission is achieved, the anti-interference capability is strong, a good isolation effect is achieved, and the interference influence of strong electricity on a weak current signal generated by the positive electrode of the battery is avoided. When the positive pole of the battery is connected to the positive connection terminal BAT +, the current input by the positive pole of the battery passes through the first current limiting unit 21, the isolation optocoupler 23 is turned on, and a part of the current passes through the isolation optocoupler 23 and then returns to the negative connection terminal BAT-of the battery through the second current limiting unit 22.
In one embodiment, with reference to fig. 3, the first current limiting unit 21 includes a resistor R1, a resistor R2 and a resistor R3 connected in series in sequence; the second current limiting unit 22 includes a resistor R4, a resistor R5, and a resistor R6 connected in series in sequence.
Specifically, a first end of the resistor R1 is connected to the positive battery access terminal BAT +, and a second end of the resistor R1 is connected to a first end of the resistor R2; the second end of the resistor R2 is connected with the first end of the resistor R3; the second end of the resistor R3 is connected with the first end of the isolation optocoupler.
Specifically, a first end of the resistor R4 is connected with the battery negative access terminal BAT-, and a second end of the resistor R4 is connected with a first end of the resistor R5; the second end of the resistor R5 is connected with the first end of the resistor R6; and the second end of the resistor R6 is connected with the second end of the isolating optocoupler.
In one embodiment, with continued reference to fig. 3, the battery reverse connection prevention detection circuit 20 further includes: a first voltage division unit 24, a transient diode D1, and a second voltage division unit 25. A first end of the first voltage division unit 24 is connected with a first end of the isolation optocoupler 23 and a second end of the first current limiting unit 21, and a second end of the first voltage division unit 24 is connected with a second end of the isolation optocoupler 23 and a second end of the second current limiting unit 22; the transient diode D1 and the first voltage division unit 24 are connected in parallel with each other; the first end of the second voltage division unit 25 is connected with the third end of the isolation optocoupler 23, the second end is grounded, the third end is connected with the fifth end of the isolation optocoupler 23, and the fourth end is connected with the release control circuit 20.
Specifically, the first voltage division unit 24 includes a resistor R7 and a resistor R8 connected in series in this order; the first end of resistance R7 and the first end of keeping apart opto-coupler 23 and the second end of first current limiting unit 21 are all connected, and the second end of resistance R7 and the first end of resistance R8 are connected, and the second end of resistance R8 and the second end of keeping apart opto-coupler 23 and the second end of second current limiting unit 22 are all connected.
Specifically, the second pressure dividing unit 25 includes: a resistor R9 and a resistor R10; specifically, a first end of the resistor R9 is connected to a third end of the isolation optocoupler 23; and a first end of the resistor R10 is connected with a second end of the resistor R9, a fifth end of the isolation optocoupler 23 and the release control circuit 30, and a second end of the resistor R is grounded.
In one embodiment, with continued reference to fig. 3, the battery reverse connection prevention detection circuit 20 further includes: a resistor R11 and a light emitting diode LED; a resistor R11 having a first end connected to a dc power supply VDD; and the anode of the light emitting diode LED is connected with the second end of the resistor R11, and the cathode of the light emitting diode LED is connected with the fourth end of the isolation optocoupler 23. When the isolation optocoupler 23 is conducted, the light emitting diode LED emits light to play a role in indicating and alarming.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A battery reverse connection prevention detection device is characterized by comprising:
the input end of the switch component is connected with the positive battery input end, and the output end of the switch component is connected with the positive pole of the UPS equipment;
the battery reverse connection prevention detection circuit is connected between the battery positive connection end and the battery negative connection end in parallel, is connected with the input end of the switch assembly, and is used for generating a battery reverse connection signal when detecting that the battery positive connection end is connected with the battery negative electrode;
and the release control circuit is connected with the output end of the battery reverse connection prevention detection circuit and the control end of the switch assembly and is used for controlling the switch assembly to be in a release state according to the received battery reverse connection signal.
2. The battery reverse connection prevention detection apparatus according to claim 1, wherein the switch assembly includes a plurality of sets of air switch and release units connected in parallel with each other;
each group of air switches has the input end connected with the positive battery input end and the output end connected with the positive pole of the UPS equipment;
and the release unit is connected with the control end of each group of air switches and is used for controlling each group of air switches to be in a release state by opening the brake when the battery reverse connection signal is received.
3. The battery reverse connection prevention detection apparatus according to claim 2, wherein said trip unit comprises a shunt trip.
4. The battery reverse connection prevention detection device according to claim 2, further comprising:
a trip unit coil connected in series between the trip unit control circuit and the trip unit;
the fuse is connected between the output end of the switch assembly and the anode of the UPS equipment in series;
the first capacitor is connected between the anode of the UPS device and the cathode of the UPS device in parallel;
and the second capacitor is mutually connected with the first capacitor in parallel.
5. The battery reverse connection prevention detection device according to any one of claims 1 to 4, wherein the battery reverse connection prevention detection circuit includes:
a first current limiting unit, the first end of which is connected with the positive battery connecting end;
the first end of the second current limiting unit is connected with the negative access end of the battery;
the first end of the isolation optocoupler is connected with the second end of the first current limiting unit, the second end of the isolation optocoupler is connected with the second end of the second current limiting unit, the third end of the isolation optocoupler is grounded, the fourth end of the isolation optocoupler is connected with a direct current power supply, and the fifth end of the isolation optocoupler is connected with the release control circuit;
when the positive battery connection end is connected with the negative electrode of the battery, the isolation optocoupler is in a cut-off state, and the isolation optocoupler outputs a reverse battery connection signal; and
when the positive connection end of the battery is connected with the positive electrode of the battery, the isolation optocoupler is in a conduction state, and the isolation optocoupler outputs a positive connection signal of the battery.
6. The device for detecting reverse battery connection according to claim 5, wherein the reverse battery connection signal is a low level signal, and the forward battery connection signal is a high level signal.
7. The device for detecting reverse connection prevention of the battery according to claim 5, wherein the first current limiting unit comprises a resistor R1, a resistor R2 and a resistor R3 which are sequentially connected in series;
the second current limiting unit comprises a resistor R4, a resistor R5 and a resistor R6 which are sequentially connected in series.
8. The battery reverse connection prevention detection device according to claim 5, wherein the battery reverse connection prevention detection circuit further comprises:
a first voltage division unit, a first end of which is connected with both the first end of the isolation optocoupler and the second end of the first current limiting unit, and a second end of which is connected with both the second end of the isolation optocoupler and the second end of the second current limiting unit;
the transient diode is mutually connected with the first voltage division unit in parallel;
and the first end of the second voltage division unit is connected with the third end of the isolation optocoupler, the second end of the second voltage division unit is grounded, the third end of the second voltage division unit is connected with the fifth end of the isolation optocoupler, and the fourth end of the second voltage division unit is connected with the release control circuit.
9. The device for detecting reverse battery connection according to claim 8, wherein the first voltage division unit comprises a resistor R7 and a resistor R8 which are connected in series in sequence;
the second voltage division unit includes:
a first end of the resistor R9 is connected with a third end of the isolation optocoupler;
and the first end of the resistor R10 is connected with the second end of the resistor R9, the fifth end of the isolation optocoupler and the release control circuit, and the second end of the resistor R is grounded.
10. The battery reverse connection prevention detection device according to claim 5, wherein the battery reverse connection prevention detection circuit further comprises:
a resistor R11 having a first end connected to a dc power supply;
and the anode of the light-emitting diode is connected with the second end of the resistor R11, and the cathode of the light-emitting diode is connected with the fourth end of the isolation optocoupler.
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| CN202222677866.9U CN218216679U (en) | 2022-10-12 | 2022-10-12 | Battery reverse connection prevention detection device |
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| CN202222677866.9U CN218216679U (en) | 2022-10-12 | 2022-10-12 | Battery reverse connection prevention detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118884307A (en) * | 2024-07-30 | 2024-11-01 | 深圳市永铨源储能有限公司 | Battery balancing interface detection system and detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118884307A (en) * | 2024-07-30 | 2024-11-01 | 深圳市永铨源储能有限公司 | Battery balancing interface detection system and detection method |
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