CN103326905B - Discharge circuit, communication equipment and charging method - Google Patents
Discharge circuit, communication equipment and charging method Download PDFInfo
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- CN103326905B CN103326905B CN201310298559.2A CN201310298559A CN103326905B CN 103326905 B CN103326905 B CN 103326905B CN 201310298559 A CN201310298559 A CN 201310298559A CN 103326905 B CN103326905 B CN 103326905B
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Abstract
The invention discloses a kind of discharge circuit, communication equipment and charging method, it is related to communication technical field, can effectively accelerate the velocity of discharge, thus the wafer damage that in the case of avoiding electric discharge not complete during test verification, maloperation causes.This discharge circuit, including：Supply line；Division module, its input is connected to described supply line；Relay, described relay includes control end and normally-closed contact group, described control end is connected to the outfan of described division module, and the second contact portion in described supply line, described normally-closed contact group for the first contact portion in described normally-closed contact group is in earth terminal；Power resistor, described power resistor is series between described first contact and described supply line, or described power resistor is series between described second contact and described earth terminal.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of discharge circuit, communication equipment and charging method.
Background technology
At present, contain substantial amounts of storage capacitor in the communication equipment such as most of routers, switch, therefore fall in equipment
When electric, need longer time just can complete to discharge, during testing equipment is checked, equipment electric discharge often occurs
Do not complete and operated and led to wafer damage.
For accelerating the velocity of discharge of communication equipment, most communications equipment vendor are using the side increasing " fictitious load " on power supply
Formula is designed, and provides a path arriving ground for equipment, and " fictitious load " herein is generally and stops very big resistance, this electric discharge
Electric current very little on loop, the therefore effect of the quickening velocity of discharge are simultaneously inconspicuous.
Content of the invention
The present invention provides a kind of discharge circuit, communication equipment and charging method, effectively can accelerate the velocity of discharge, thus
The wafer damage that in the case of avoiding electric discharge not complete during test verification, maloperation causes.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that：
On the one hand, a kind of discharge circuit is provided, including：
Supply line；
Division module, its input is connected to described supply line；
Relay, described relay includes control end and normally-closed contact group, and described control end is connected to described division module
Outfan, the first contact portion in described normally-closed contact group in described supply line, described normally-closed contact group second
Contact portion is in earth terminal；
Power resistor, described power resistor is series between described first contact and described supply line, or described work(
Rate resistant series are between described second contact and described earth terminal.
Specifically, described relay includes common, normally-closed contact and normally opened contact, described common and normally closed touch
Point forms described normally-closed contact group, described common and normally opened contact composition normally opened contact group；
Described normally opened contact is vacantly arranged；
Described common is described first contact, and described normally-closed contact is described second contact；
Or, described common is described second contact, and described normally-closed contact is described first contact.
Specifically, described supply line includes mains supply line and secondary supply line；
The input of described division module is connected to described mains supply line；
Described normally-closed contact group includes main normally-closed contact group and secondary normally-closed contact group；
Described earth terminal includes main earth terminal and secondary earth terminal；
Described power resistor is including main power resistor and secondary power resistor；
The first contact portion in described main normally-closed contact group in described mains supply line, in described main normally-closed contact group
Second contact portion in described main earth terminal, described main power resistor be series at the first contact in described main normally-closed contact group with
Between described mains supply line, or described main power resistor be series at the second contact in described main normally-closed contact group with described
Between main earth terminal；
The first contact portion in described pair normally-closed contact group is in described pair supply line, described pair normally-closed contact group
Second contact portion in described pair earth terminal, described pair power resistor be series at described pair normally-closed contact group in the first contact with
Described pair supply line between, or described pair power resistor be series at described pair normally-closed contact group in the second contact with described
Between secondary earth terminal.
Alternatively, described division module be Zener diode, its negative electrode as the input of described division module, its anode
Outfan as described division module.
Alternatively, described division module includes：First divider resistance and the second divider resistance, described first divider resistance and
Second divider resistance is connected in series, and its one end, as the input of described division module, another terminates to described input
Corresponding earth terminal；Its serial connection point is as the outfan of division module.
Specifically, described first divider resistance at least includes a resistance and/or described second divider resistance at least includes
One resistance.
On the other hand, provide a kind of communication equipment, including equipment mainboard and power module, also include：
Above-mentioned discharge circuit；
Described equipment mainboard is connected to described power module by the supply line in described discharge circuit.
Specifically, described supply line includes mains supply line and secondary supply line；
One end of described mains supply line is connected to power module, and the other end is connected to equipment mainboard, for for equipment master
Plate provides and runs required low-voltage dc power supply；
One end of described pair supply line is connected to power module, and the other end is connected to equipment mainboard, for for equipment master
Plate provides the DC source of high voltage with the work of other devices on holding equipment mainboard.
Specifically, described mains supply line is different with the voltage that described pair supply line provides.
On the other hand, a kind of charging method is provided, for above-mentioned communication equipment, including：
When power module power down, the first contact of normally-closed contact group and second closing of contact, equipment mainboard in relay
The loop electric discharge being formed with earth terminal by power resistor.
The present invention provides discharge circuit, communication equipment and charging method, by switching characteristic and the power resistor of relay
Power consumption characteristic match, realize the repid discharge of communication equipment, thus avoid during test verification electric discharge not complete
The wafer damage that in the case of one-tenth, maloperation causes.And, " fictitious load " can produce work(in equipment normal work in prior art
Rate consumes, thus leading to generate heat, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of discharge circuit in the embodiment of the present invention；
Fig. 2 is the schematic diagram of another kind of discharge circuit in the embodiment of the present invention；
Fig. 3 is the schematic diagram of another kind of discharge circuit in the embodiment of the present invention；
Fig. 4 is the schematic diagram of another kind of discharge circuit in the embodiment of the present invention；
Fig. 5 is a kind of flow chart of charging method in the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
As shown in figure 1, the embodiment of the present invention provides a kind of discharge circuit, including：Supply line 1；Division module 2, it is defeated
Enter end and be connected to supply line 1；Relay 3, relay 3 includes control end O and normally-closed contact group, and control end O is connected to partial pressure
The outfan of module 2, the first contact A in normally-closed contact group is connected to supply line 1, the second contact B in normally-closed contact group
It is connected to earth terminal G；Power resistor R, as shown in Fig. 2 power resistor R is series between the first contact A and supply line 1, or
Person is as shown in figure 1, power resistor R is series between the second contact B and earth terminal G.Division module 2 is specifically as follows resistance.
This discharge circuit can be used for the electric discharge after communication equipment power down, and specifically, one end of above-mentioned supply line 1 connects
In power module, the other end is connected to equipment mainboard, and power module is equipment main board power supply by supply line 1, due to power supply
The voltage generally greater than relay 3 that module exports equipment mainboard realizes preset value when controlling it is therefore desirable to division module 2 will
Voltage in supply line 1 transmits after carrying out partial pressure to control end O of relay 3, in normal power supply, normally closed in relay 3
The first contact A in contact sets is separated with the second contact B's, and now this discharge circuit will not be to the normal work of communication equipment
Impact；In power module power down, that is, when stopping the power supply to equipment mainboard, voltage in supply line 1 reduces, when continuing
When the control end voltage of electrical equipment 3 is reduced to preset value, the first contact A is electric with power with the second contact B closure, i.e. supply line 1
Form the discharge loop of a high current between resistance R and earth terminal G, so that electric current on equipment mainboard is put by power resistor R
Electricity, due to the power resistor R power consumption characteristic of itself, it is possible to achieve the repid discharge of equipment mainboard.
Discharge circuit in the present embodiment, is matched by the power consumption characteristic of the switching characteristic of relay and power resistor
Close, realize the repid discharge of communication equipment, thus maloperation causes in the case of avoiding electric discharge not complete during test verification
Wafer damage.And, " fictitious load " can produce power consumption in equipment normal work in prior art, thus leading to send out
Heat, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
Embodiment two
On the basis of embodiment one, further, above-mentioned relay can only comprise normally-closed contact group, but, commonly use
Relay be usually SPDT.SPDT relay includes common, normally-closed contact and normally opened contact, public
Contact and normally-closed contact form above-mentioned normally-closed contact group, common and normally opened contact composition normally opened contact group, when relay
When control terminal voltage is below preset value, common is closed with normally-closed contact, and common is disconnected with normally opened contact, works as relay
When the control terminal voltage of device is more than preset value, common is disconnected with normally-closed contact, and common is closed with normally opened contact；This
In embodiment, normally opened contact is vacantly arranged；As shown in figure 1, common is above-mentioned first contact A, normally-closed contact is above-mentioned second
Contact B；Or, common is above-mentioned second contact, and normally-closed contact is above-mentioned first contact.It should be noted that in Fig. 1 not
Normally opened contact is shown.
The other structures of discharge circuit are identical with embodiment one with concrete operating principle and process, will not be described here.
Discharge circuit in the present embodiment, is matched by the power consumption characteristic of the switching characteristic of relay and power resistor
Close, realize the repid discharge of communication equipment, thus maloperation causes in the case of avoiding electric discharge not complete during test verification
Wafer damage.And, " fictitious load " can produce power consumption in equipment normal work in prior art, thus leading to send out
Heat, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
Embodiment three
On the basis of embodiment one or embodiment two, further, as shown in figure 3, supply line can include main confession
Electric line 11 and secondary supply line 12；The input of division module 2 is connected to mains supply line 11, the outfan of division module 2
It is connected to control end O of relay 3；Normally-closed contact group includes main normally-closed contact group 31 and secondary normally-closed contact group 32；Earth terminal bag
Include main earth terminal G1 and secondary earth terminal G2；Power resistor is including main power resistor R1 and secondary power resistor R2；Main normally-closed contact
The first contact A in group 31 is connected to mains supply line 11, and the second contact B in main normally-closed contact group 31 is connected to main earth terminal
G1, main power resistor is series between the first contact and the mains supply line in main normally-closed contact group, or main power resistor R1
It is series between the second contact B in main normally-closed contact group 31 and main earth terminal G1；The first contact A in secondary normally-closed contact group 32
It is connected to secondary supply line 12, the second contact B in secondary normally-closed contact group 32 is connected to secondary earth terminal G2, secondary power resistor series connection
Between the first contact in secondary normally-closed contact group and secondary supply line, or secondary power resistor R2 is series at secondary normally-closed contact group
Between the second contact B in 32 and secondary earth terminal G2.Division module 2 can be Zener diode, and its negative electrode is as division module 2
Input, its anode is as the outfan of division module 2.
Specifically, one end of mains supply line 11 is connected to power module, and the other end is connected to equipment mainboard, main supply lines
Road 11 is used for providing for equipment mainboard runs required low-voltage dc power supply, and one end of secondary supply line 12 is connected to power supply mould
Block, the other end is connected to equipment mainboard, and secondary supply line 12 is used for providing the DC source of high voltage to prop up for equipment mainboard
The voltage that on holding equipment mainboard, the work of other devices is typically due to mains supply line 11 with secondary supply line 12 provides is different, because
The voltage of this main earth terminal G1 and secondary earth terminal G2 is also different.According to the reverse characteristic of Zener diode, when power module is normal
Work, when the supply voltage that is, mains supply line 11 provides reaches the critical voltage value of Zener diode, reverses current through, from
And control relay 3 action, the first contact A in each normally-closed contact group in relay 3 and the second contact B disconnect, and now should
Discharge circuit does not work；When power module power down, the supply voltage that is, mains supply line 11 provides is less than facing of Zener diode
During boundary's voltage, reverse current cannot pass through, thus control relay 3 action, first in each normally-closed contact group in relay 3
Contact A and the second contact B closure, by main power resistor R1 and secondary power resistor R2 and main earth terminal G1 and secondary earth terminal G2
Realize carrying out repid discharge to the device of voltages different on equipment mainboard.
In addition, in the present embodiment can according to equipment mainboard be actually needed setting a plurality of pair supply line, continue simultaneously
Electrical equipment has multiple pair normally-closed contact groups accordingly, multiple pair power resistors and multiple pair earth terminal.Need in prior art
Each printed panel is respectively provided with " fictitious load ", thus increased cost, and the discharge circuit in the present embodiment only needs to set
Put between whole equipment mainboard and power module, cost is relatively low.
Discharge circuit in the present embodiment, is matched by the power consumption characteristic of the switching characteristic of relay and power resistor
Close, realize the repid discharge of communication equipment, thus maloperation causes in the case of avoiding electric discharge not complete during test verification
Wafer damage.And, " fictitious load " can produce power consumption in equipment normal work in prior art, thus leading to send out
Heat, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
Example IV
On the basis of embodiment one, two, three, the shown division module 2 in Fig. 3 can substitute voltage stabilizing with divider resistance
Diode.As shown in figure 4, described division module 2 includes the first divider resistance 23 and the second divider resistance 24, described first partial pressure
Resistance 23 and the second divider resistance 24 are connected in series, and its one end, as the input of described division module 2, another terminates to
The corresponding earth terminal G1 of described input；Its serial connection point is as the outfan of division module 2.Described first divider resistance 23
At least include a resistance including a resistance and/or described second divider resistance 24.
Embodiment five
On the basis of embodiment one, embodiment two, embodiment three and example IV, present embodiments provide a kind of communication
Equipment, including equipment mainboard and power module, also includes：Any one discharge circuit in the various embodiments described above；Equipment mainboard
Power module is connected to by the supply line in this discharge circuit.
Specifically, this supply line can include mains supply line and secondary supply line；One end of this mains supply line is even
It is connected to power module, the other end is connected to equipment mainboard, run required low-voltage dc power supply for providing for equipment mainboard；
One end of this secondary supply line is connected to power module, and the other end is connected to equipment mainboard, higher for providing for equipment mainboard
The DC source of voltage is with the work of other devices on holding equipment mainboard.
Specifically, this mains supply line is different with the voltage that this secondary supply line provides.
The concrete structure of this discharge circuit is identical with the various embodiments described above with operation principle, will not be described here.This communication
Equipment can be router or switch etc..
Communication equipment in the present embodiment, is provided with discharge circuit, wherein passes through switching characteristic and the power electricity of relay
The power consumption characteristic of resistance matches, and realizes the repid discharge of communication equipment, thus avoiding electric discharge during test verification not
The wafer damage that under performance, maloperation causes.And, " fictitious load " can produce in equipment normal work in prior art
Power consumption, thus leading to generate heat, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
Embodiment six
On the basis of Shi Liyi, embodiment two, embodiment three and example IV, present embodiments provide a kind of electric discharge side
Method, for the communication equipment in embodiment five, as shown in figure 5, this charging method includes：
Step 101, when power module power down, the first contact of normally-closed contact group and second closing of contact in relay,
Equipment mainboard passes through the loop electric discharge that power resistor is formed with earth terminal.
The concrete structure of this communication equipment and relay is identical with the various embodiments described above with principle, will not be described here.
Charging method in the present embodiment, wherein passes through the switching characteristic of relay and the power consumption characteristic of power resistor
Match, realize the repid discharge of communication equipment, thus maloperation in the case of avoiding electric discharge not complete during test verification
The wafer damage causing.And, in prior art, " fictitious load " can produce power consumption in equipment normal work, thus leading to
Heating, and the discharge circuit in the present embodiment does not interfere with the normal work of equipment.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by described scope of the claims.
Claims (10)
1. a kind of discharge circuit is it is characterised in that include：
Supply line；
Division module, its input is connected to described supply line；
Relay, described relay includes control end and normally-closed contact group, and described control end is connected to the defeated of described division module
Go out end, the second contact in described supply line, described normally-closed contact group for the first contact portion in described normally-closed contact group
It is connected to earth terminal；
Power resistor, described power resistor is series between described first contact and described supply line, or described power electricity
Resistance is series between described second contact and described earth terminal.
2. discharge circuit according to claim 1 it is characterised in that
Described relay includes common, normally-closed contact and normally opened contact, and described common and normally-closed contact composition are described
Normally-closed contact group, described common and normally opened contact composition normally opened contact group；
Described normally opened contact is vacantly arranged；
Described common is described first contact, and described normally-closed contact is described second contact；
Or, described common is described second contact, and described normally-closed contact is described first contact.
3. discharge circuit according to claim 1 and 2 it is characterised in that
Described supply line includes mains supply line and secondary supply line；
The input of described division module is connected to described mains supply line；
Described normally-closed contact group includes main normally-closed contact group and secondary normally-closed contact group；
Described earth terminal includes main earth terminal and secondary earth terminal；
Described power resistor is including main power resistor and secondary power resistor；
The first contact portion in described main normally-closed contact group in described mains supply line, in described main normally-closed contact group second
Contact portion in described main earth terminal, described main power resistor be series at the first contact in described main normally-closed contact group with described
Between mains supply line, or the second contact that described main power resistor is series in described main normally-closed contact group is connect with described master
Between ground terminal；
Described pair normally-closed contact group in the first contact portion in described pair supply line, described pair normally-closed contact group in second
Contact portion in described pair earth terminal, described pair power resistor be series at described pair normally-closed contact group in the first contact with described
Between secondary supply line, or the second contact that described pair power resistor is series in described pair normally-closed contact group is connect with described pair
Between ground terminal.
4. discharge circuit according to claim 1 and 2 it is characterised in that
Described division module is Zener diode, and, as the input of described division module, its anode is as described point for its negative electrode
The outfan of die block.
5. discharge circuit according to claim 1 and 2 it is characterised in that
Described division module includes：First divider resistance and the second divider resistance, described first divider resistance and the second partial pressure electricity
Resistance is connected in series, and its one end, as the input of described division module, another terminates to the corresponding ground connection of described input
End；Its serial connection point is as the outfan of division module.
6. discharge circuit according to claim 5 is it is characterised in that described first divider resistance at least includes a resistance
And/or described second divider resistance at least includes a resistance.
7. a kind of communication equipment, including equipment mainboard and power module it is characterised in that also including：
Discharge circuit as described in any one in claim 1 to 6；
Described equipment mainboard is connected to described power module by the supply line in described discharge circuit.
8. the communication equipment as described in right 7 is it is characterised in that described supply line includes mains supply line and secondary supply lines
Road；
One end of described mains supply line is connected to power module, and the other end is connected to equipment mainboard, for carrying for equipment mainboard
For running required low-voltage dc power supply；
One end of described pair supply line is connected to power module, and the other end is connected to equipment mainboard, for carrying for equipment mainboard
For high voltage DC source with the work of other devices on holding equipment mainboard.
9. the communication equipment as described in right 8 it is characterised in that described mains supply line and described pair supply line provide electricity
Pressure is different.
10. a kind of charging method, for the communication equipment as described in any one in claim 7 to 9 it is characterised in that wrapping
Include：
When power module power down, the first contact of normally-closed contact group and second closing of contact in relay, equipment mainboard passes through
The loop electric discharge that power resistor is formed with earth terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298559.2A CN103326905B (en) | 2013-07-16 | 2013-07-16 | Discharge circuit, communication equipment and charging method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310298559.2A CN103326905B (en) | 2013-07-16 | 2013-07-16 | Discharge circuit, communication equipment and charging method |
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| CN103326905A CN103326905A (en) | 2013-09-25 |
| CN103326905B true CN103326905B (en) | 2017-03-08 |
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| CN201310298559.2A Active CN103326905B (en) | 2013-07-16 | 2013-07-16 | Discharge circuit, communication equipment and charging method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462218A (en) * | 2018-01-29 | 2018-08-28 | 上海科众恒盛云计算科技有限公司 | A kind of accumulator online monitoring system and its method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327019A (en) * | 2018-10-17 | 2019-02-12 | 广东美的厨房电器制造有限公司 | A kind of circuit board discharge control method, discharge control device and circuit board |
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| EP0090336A2 (en) * | 1982-03-29 | 1983-10-05 | Siemens Aktiengesellschaft | Circuit arrangements for discharging capacitors by means of a relay |
| CN203056953U (en) * | 2012-12-31 | 2013-07-10 | 北京配天大富精密机械有限公司 | Driver and bus capacitor discharge circuit thereof |
| CN103199685A (en) * | 2012-01-06 | 2013-07-10 | 现代摩比斯株式会社 | Input part discharging circuit of high-capacity converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6605921B2 (en) * | 2001-08-31 | 2003-08-12 | Denso Corporation | Electric power supply system for engine starters |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090336A2 (en) * | 1982-03-29 | 1983-10-05 | Siemens Aktiengesellschaft | Circuit arrangements for discharging capacitors by means of a relay |
| CN103199685A (en) * | 2012-01-06 | 2013-07-10 | 现代摩比斯株式会社 | Input part discharging circuit of high-capacity converter |
| CN203056953U (en) * | 2012-12-31 | 2013-07-10 | 北京配天大富精密机械有限公司 | Driver and bus capacitor discharge circuit thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462218A (en) * | 2018-01-29 | 2018-08-28 | 上海科众恒盛云计算科技有限公司 | A kind of accumulator online monitoring system and its method |
| CN108462218B (en) * | 2018-01-29 | 2020-02-21 | 上海科众恒盛云计算科技有限公司 | Storage battery online monitoring system and method thereof |
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| CN103326905A (en) | 2013-09-25 |
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