CN109861382A - A kind of power-supply system of anti-surge voltage impact - Google Patents
A kind of power-supply system of anti-surge voltage impact Download PDFInfo
- Publication number
- CN109861382A CN109861382A CN201910267823.3A CN201910267823A CN109861382A CN 109861382 A CN109861382 A CN 109861382A CN 201910267823 A CN201910267823 A CN 201910267823A CN 109861382 A CN109861382 A CN 109861382A
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- Prior art keywords
- power supply
- relay
- lithium battery
- battery group
- ups
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 82
- 230000005611 electricity Effects 0.000 claims abstract description 32
- 230000001052 transient effect Effects 0.000 claims abstract description 8
- 230000002459 sustained effect Effects 0.000 claims description 24
- 230000002618 waking effect Effects 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention proposes a kind of power-supply system of anti-surge voltage impact, including lithium battery group, battery management system BMS, Switching Power Supply, control circuit and uninterruptible power supply UPS, the lithium battery group passes through control circuit and the uninterruptible power supply UPS circuit connection；The first end of the Switching Power Supply is connect with the cathode traces of uninterruptible power supply UPS, and the second end of the Switching Power Supply accesses control circuit；The battery management system BMS by control control circuit make when uninterruptible power supply UPS charges Switching Power Supply to lithium battery group taken from uninterruptible power supply UPS electricity, when lithium battery group and uninterruptible power supply UPS cut off charging transient or cutting electric discharge Switching Power Supply from lithium battery group from take electricity.Present invention reduces the consumption of lithium battery group, and play a protective role to Switching Power Supply, the surge voltage damage Switching Power Supply for avoiding UPS from generating when stopping output or instantaneous trip charge and discharge.
Description
Technical field
The present invention relates to power technique fields, and in particular to a kind of power-supply system of anti-surge voltage impact.
Background technique
Uninterruptible power supply UPS is that battery is connected with main frame, by inverter circuit by the direct current of battery
Electricity is converted into the system equipment of electric main.It is mainly used for supplying to single computer, the continual electric power of computer network system
It answers.When alternating current input is normal, uninterruptible power supply UPS uses commercial power supply to load, while it also charges to battery.When
When commercial power interruption (forced outage), uninterruptible power supply UPS by the direct current energy of battery, passes through the side of inverter switching conversion immediately
Normal load continues to supply 220V alternating current, makes load continue to work normally certain time, when user can use this section
Between handle scene and shutdown, to protect negative computer soft and hardware not damaged.
Wherein, battery management system BMS has played important function wherein, for guaranteeing that uninterruptible power supply UPS is to pass through
Alternating current takes electricity or takes electricity from lithium battery group, and is in time lithium battery group charging etc. when there is alternating current input.And Switching Power Supply
As for the DC voltage of battery pack or uninterruptible power supply UPS to be converted into 24V voltage as battery management system BMS confession
Electricity, it is therefore desirable to guarantee that the Switching Power Supply moment is under normal operating conditions.
Existing Switching Power Supply, Switching Power Supply is cut when uninterruptible power supply UPS stops output (such as forced outage) in order to prevent
It is disconnected to cause system crash, it is all in-line power to be carried out using lithium battery, therefore be easy to cause the loss of lithium battery；If occurring suddenly
Forced outage, the deficiency of electric quantity of lithium battery will also result in the damage of computer soft and hardware.Moreover, according to uninterruptible power supply UPS
For Switching Power Supply power supply, when UPS stops charge or discharge suddenly, the high pressure that UPS moment generates is easy breakdown switch power supply
Device damages.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of power-supply system of anti-surge voltage impact, when uninterrupted electricity
When source UPS charges to lithium battery group, Switching Power Supply takes electricity from uninterruptible power supply UPS；When lithium battery group and uninterruptible power supply UPS
When cutting off charging transient or cutting electric discharge, Switching Power Supply takes electricity from lithium battery group, reduces the consumption of lithium battery group, and split
Powered-down source plays a protective role.
The technical scheme of the present invention is realized as follows: a kind of power-supply system of anti-surge voltage impact, including lithium battery
Group, battery management system BMS, Switching Power Supply, control circuit and uninterruptible power supply UPS, the lithium battery group pass through control circuit
With the uninterruptible power supply UPS circuit connection；The first end of the Switching Power Supply and the cathode traces of uninterruptible power supply UPS connect
It connects, the second end of the Switching Power Supply accesses control circuit；The battery management system BMS is made by controlling control circuit:
When uninterruptible power supply UPS charges to lithium battery group, Switching Power Supply takes electricity from uninterruptible power supply UPS；
When lithium battery group and uninterruptible power supply UPS cutting charging transient or cutting are discharged, Switching Power Supply is from lithium battery group
Place takes electricity.
Optionally, the control circuit includes total positive relay S1, charge relay S2, wakes up relay in key S3, DC
The outer relay S5 of device S4, DC, discharge diode, sustained diode 1 and sustained diode 2, the cathode of the discharge diode,
The anode of sustained diode 2 and one end of charge relay S2 come together in first node a, the first node a and uninterrupted electricity
The cathode circuit of source UPS connects；The other end of the charge relay S2 and the anode of the discharge diode come together in second
The first end circuit connection of node b, the second node b and total positive relay S1；The second end of total positive relay S1 with
The anode of sustained diode 1 collects and third node c, the cathode circuit connection of the third node c and lithium battery group；It is described
The cathode of sustained diode 1, the first end for waking up key S3, the first end of relay S4 comes together in fourth node d, institute in DC
It states and wakes up that the second end of key S3, the second end of relay S4, the first end of the outer relay S5 of DC come together in the 5th node in DC
E, the second end circuit connection of the 5th node e and Switching Power Supply, the first end of the Switching Power Supply, lithium battery group it is negative
Pole, uninterruptible power supply UPS cathode come together in the 6th node f；The negative electricity of the DC outer relay S5 and sustained diode 2
Road connection；The closure of the outer relay S5 of relay S4, DC passes through battery in total positive relay S1, charge relay S2, DC
Management system BMS control.
Optionally, circuit connection has and is spaced apart switch S6 between the 5th node e and Switching Power Supply.
Optionally, circuit connection has current divider between the third node c and lithium battery group.
Optionally, fuse FU1, the cathode of the lithium battery group are connected between the Switching Power Supply and the 6th node f
Fuse FU2 is connected between the 6th node f.
Optionally, battery management system BMS to outside relay S4, DC in total positive relay S1, charge relay S2, DC after
The control of electric appliance S5 are as follows:
When uninterruptible power supply UPS charges to lithium battery group or lithium battery group is discharged to uninterruptible power supply UPS, the battery
The total positive relay S1 of management system BMS closure, the outer relay S5 of charge relay S2, DC, and disconnect relay S4 in DC；
When lithium battery group charges over-voltage, lithium battery group and uninterruptible power supply UPS disconnect charging connection, battery management system
Relay S4 in BMS closure total positive relay S1, DC, and disconnect the outer relay S5 of charge relay S2, DC；
When lithium battery group electric discharge is under-voltage, lithium battery group and uninterruptible power supply UPS disconnect electric discharge connection, battery management system
Relay S4 in BMS closed DC, and disconnect total positive relay S1, the outer relay S5 of charge relay S2, DC.
Compared with prior art, the invention has the following advantages that the present invention is by battery management system BMS to control circuit
Control can make the Switching Power Supply when uninterruptible power supply UPS charges to lithium battery group take electricity from uninterruptible power supply UPS, when lithium electricity
Switching Power Supply takes electricity from lithium battery group when Chi Zuyu uninterruptible power supply UPS cutting charging transient or cutting electric discharge, reduces lithium
The consumption of battery pack, and play a protective role to Switching Power Supply, avoid UPS from generating when stopping output or instantaneous trip charge and discharge
Surge voltage damages Switching Power Supply.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the system block diagram of power-supply system one embodiment of anti-surge voltage of the present invention impact；
Fig. 2 is the circuit structure diagram of power-supply system one embodiment of anti-surge voltage of the present invention impact.
Attached drawing mark: a first node；B second node；C third node；D fourth node；The 5th node of e；The 6th node of f.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figures 1 and 2, the power-supply system of a kind of anti-surge voltage impact disclosed by the invention, including lithium battery group,
Battery management system BMS, Switching Power Supply, control circuit and uninterruptible power supply UPS, lithium battery group is by control circuit and uninterruptedly
Power supply UPS circuit connection；The first end of Switching Power Supply is connect with the cathode traces of uninterruptible power supply UPS, and the second of Switching Power Supply
It terminates into control circuit；Battery management system BMS is made by controlling control circuit:
When uninterruptible power supply UPS charges to lithium battery group, Switching Power Supply takes electricity from uninterruptible power supply UPS；
When lithium battery group and uninterruptible power supply UPS cutting charging transient or cutting are discharged, Switching Power Supply is from lithium battery group
Place takes electricity.
Specifically, as shown in Fig. 2, the control circuit includes total positive relay S1, charge relay S2, wakes up key
The outer relay S5 of relay S4, DC, discharge diode, sustained diode 1 and sustained diode 2, the electric discharge two in S3, DC
The cathode of pole pipe, one end of the anode and charge relay S2 of sustained diode 2 come together in first node a, the first node
A is connect with the cathode circuit of uninterruptible power supply UPS；The other end of the charge relay S2 and the anode of the discharge diode
Come together in second node b, the first end circuit connection of the second node b and total positive relay S1；Total positive relay S1
Second end and the anode of sustained diode 1 collect and third node c, the cathode circuit of the third node c and lithium battery group
Connection；The cathode of the sustained diode 1, the first end for waking up key S3, the first end of relay S4 comes together in the 4th in DC
Node d, the second end of relay S4, the first end of the outer relay S5 of DC come together in the second end for waking up key S3, DC
5th node e, the second end circuit connection of the 5th node e and Switching Power Supply, the first end of the Switching Power Supply, lithium battery
The cathode of group, the cathode of uninterruptible power supply UPS come together in the 6th node f；The outer relay S5 of the DC and sustained diode 2
Cathode traces connection；The closure of the outer relay S5 of relay S4, DC is logical in total positive relay S1, charge relay S2, DC
Cross battery management system BMS control.
Wherein, circuit connection has and is spaced apart switch S6 between the 5th node e and Switching Power Supply, when needing to use power supply of the present invention
It is just opened when system and is spaced apart switch S6.
In addition, waking up key S3 is non-self-lock-ing key, it is to disconnect under default conditions, is only manually pressed by and is just closed, hand
It is off-state after release.
Specifically, battery management system BMS to outside relay S4, DC in total positive relay S1, charge relay S2, DC after
The control of electric appliance S5 are as follows:
When uninterruptible power supply UPS charges to lithium battery group or lithium battery group is discharged to uninterruptible power supply UPS, the battery
The total positive relay S1 of management system BMS closure, the outer relay S5 of charge relay S2, DC, and disconnect relay S4 in DC；
When lithium battery group charges over-voltage, lithium battery group and uninterruptible power supply UPS disconnect charging connection, battery management system
Relay S4 in BMS closure total positive relay S1, DC, and disconnect the outer relay S5 of charge relay S2, DC；
When lithium battery group electric discharge is under-voltage, lithium battery group and uninterruptible power supply UPS disconnect electric discharge connection, battery management system
Relay S4 in BMS closed DC, and disconnect total positive relay S1, the outer relay S5 of charge relay S2, DC.
As shown in Fig. 2, specific control process are as follows:
(1) under system initial state, total positive relay S1, charge relay S2, relay in key S3, DC is waken up
S4, it is spaced apart switch S6 and is in an off state, the outer relay S5 of DC is normally closed relay, is in closed state；
(2) when needing to start power-supply system of the present invention, manual closing is spaced apart switch S6；
(3) do not power in system and when uninterruptible power supply UPS Non voltage output, be manually pressed by and wake up key S3, system into
Enter self-test state (i.e. init state), the total positive relay S1 of battery management system BMS control, charge relay S2, DC it is outer after
Electric appliance S5 closure, and relay S4 in DC is disconnected, Switching Power Supply takes electricity from lithium battery group at this time, has two-way electric current access switch electric
Source, current direction are respectively as follows: B+ → total positive outer relay S5 of relay S1 → charge relay S2 → 2 → DC of sustained diode
→ Switching Power Supply → B-, B+ → sustained diode 1 → wake-up key S3 → Switching Power Supply → B- detect control circuit with this
In each device whether damage；
When unclamping wake-up key S3, current direction becomes: B+ → total positive relay S1 → charge relay S2 → afterflow
The outer relay S5 → Switching Power Supply → B- of diode D2 → DC；
Detect whether the device in control circuit is under normal operating conditions with this.
(4) when system does not power on and uninterruptible power supply UPS has voltage output, system is again at self-test state, battery
The total positive relay S1 of management system BMS control, the outer relay S5 closure of charge relay S2, DC, and relay S4 in DC is disconnected,
And wake up key S3 and be then in an off state, Switching Power Supply takes electricity from uninterruptible power supply UPS at this time, current direction are as follows: and P+ →
Whether the outer relay S5 → Switching Power Supply → P- of 2 → DC of sustained diode, be in this come each device detected in control circuit
Under normal operating conditions；
(5) when uninterruptible power supply is that lithium battery group charges, the total positive relay S1 of battery management system BMS control, charging
The outer relay S5 closure of relay S2, DC, and relay S4 in DC is disconnected, and wake up key S3 and be then in an off state, at this time
Switching Power Supply takes electricity, current direction from uninterruptible power supply UPS are as follows: the outer relay S5 → switch of P+ → 2 → DC of sustained diode
Power supply → P-；
(6) when lithium battery charges over-voltage, lithium battery group and uninterruptible power supply UPS disconnect charging connection, at this time cell tube
Relay S4 closure in reason system BMS control total positive relay S1, DC, and the outer relay S5 of charge relay S2, DC is disconnected, and
It wakes up key S3 to be then in an off state, Switching Power Supply becomes taking electricity from lithium battery group at this time, and lithium battery group is avoided to cut with UPS
The device for the high-voltage breakdown Switching Power Supply that the positive P+ of disconnected charging transient uninterruptible power supply UPS is generated, current direction becomes at this time:
Relay S4 → Switching Power Supply → B- in B+ → 1 → DC of sustained diode；
(7) it when lithium battery group is discharged to uninterruptible power supply UPS, the total positive relay S1 of battery management system BMS control, fills
The outer relay S5 closure of electrical relay S2, DC, and wake up key S3 and be then in an off state, and disconnect relay S4 in DC, this
When Switching Power Supply from lithium battery group take electricity, current direction are as follows: B+ → total positive relay S1 → charge relay S2 → two pole of afterflow
The outer relay S5 → Switching Power Supply → B- of pipe D2 → DC；
(8) when lithium battery group electric discharge is under-voltage, lithium battery group and uninterruptible power supply UPS disconnect electric discharge connection, battery management
System BMS controls relay S4 closure in DC, and disconnects total positive relay S1, the outer relay S5 of charge relay S2, DC, and calls out
The key S3 that wakes up then is in an off state, and Switching Power Supply takes electricity from lithium battery group at this time, and current direction becomes: B+ → freewheeling diode
Relay S4 → Switching Power Supply → B- in D1 → DC；Since positive relay S1 total at this time, charge relay S2 are disconnected, uninterruptedly
Power supply UPS can not take electricity from lithium battery group.
In above-mentioned control process, due to discharge diode, sustained diode 1, sustained diode 2 can only one-way flow,
In conjunction with the stability of lithium battery group voltage, therefore it is electric to avoid the surge voltage damage switch that uninterruptible power supply UPS moment generates
Source.
In above-described embodiment, circuit connection has current divider between third node c and lithium battery group, for detecting the big of electric current
Small and direction, battery management system BMS calculate the size of lithium battery group capacity with this.
Wherein, fuse FU1, the cathode of lithium battery group and the 6th node f are connected between Switching Power Supply and the 6th node f
Between be connected with fuse FU2, with protective loop.
The present invention controls control circuit by battery management system BMS, can make when uninterruptible power supply UPS is to lithium battery group
Switching Power Supply takes electricity, when lithium battery group and uninterruptible power supply UPS cut off charging transient or cut from uninterruptible power supply UPS when charging
Switching Power Supply takes electricity from lithium battery group when disconnected electric discharge, reduces the consumption of lithium battery, and play a protective role to Switching Power Supply,
The surge voltage damage Switching Power Supply for avoiding uninterruptible power supply UPS from generating when stopping output or instantaneous trip charge and discharge.
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
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of power-supply system of anti-surge voltage impact, which is characterized in that including lithium battery group, battery management system BMS, open
Powered-down source, control circuit and uninterruptible power supply UPS, the lithium battery group pass through control circuit and uninterruptible power supply UPS electricity
Road connection；The first end of the Switching Power Supply is connect with the cathode traces of uninterruptible power supply UPS, the second end of the Switching Power Supply
Access control circuit；The battery management system BMS is made by controlling control circuit:
When uninterruptible power supply UPS charges to lithium battery group, Switching Power Supply takes electricity from uninterruptible power supply UPS；
When lithium battery group and uninterruptible power supply UPS cutting charging transient or cutting are discharged, Switching Power Supply takes from lithium battery group
Electricity.
2. the power-supply system of anti-surge voltage as described in claim 1 impact, which is characterized in that the control circuit include it is total just
Relay S1, charge relay S2, the outer relay S5 of relay S4, DC in key S3, DC, discharge diode, afterflow two are waken up
Pole pipe D1 and sustained diode 2, the cathode of the discharge diode, sustained diode 2 anode with charge relay S2's
One end comes together in first node a, and the first node a is connect with the cathode circuit of uninterruptible power supply UPS；The charge relay
The anode of the other end of S2 and the discharge diode comes together in second node b's, the second node b and total positive relay S1
First end circuit connection；The second end of total positive relay S1 and the anode of sustained diode 1 collect and third node c, institute
The cathode circuit for stating third node c and lithium battery group connects；The cathode of the sustained diode 1, wake up key S3 first
The first end of relay S4 comes together in fourth node d in end, DC, relay S4 in the second end for waking up key S3, DC
The first end of the outer relay S5 of second end, DC comes together in the 5th node e, the second end electricity of the 5th node e and Switching Power Supply
Road connection, the first end of the Switching Power Supply, the cathode of lithium battery group, uninterruptible power supply UPS cathode come together in the 6th node
f；The outer relay S5 of the DC is connect with the cathode traces of sustained diode 2；Total positive relay S1, charge relay S2,
The closure of the outer relay S5 of relay S4, DC is controlled by battery management system BMS in DC.
3. the power-supply system of anti-surge voltage impact as claimed in claim 2, which is characterized in that the 5th node e and switch
There is circuit connection between power supply is spaced apart switch S6.
4. the power-supply system of anti-surge voltage impact as claimed in claim 2, which is characterized in that the third node c and lithium electricity
Circuit connection has current divider between the group of pond.
5. the power-supply system of anti-surge voltage impact as claimed in claim 2, which is characterized in that the Switching Power Supply and Section six
It is connected with fuse FU1 between point f, is connected with fuse FU2 between the cathode of the lithium battery group and the 6th node f.
6. the power-supply system of anti-surge voltage impact as claimed in claim 2, which is characterized in that battery management system BMS is to total
The control of the outer relay S5 of relay S4, DC in positive relay S1, charge relay S2, DC are as follows:
When uninterruptible power supply UPS charges to lithium battery group or lithium battery group is discharged to uninterruptible power supply UPS, the battery management
The total positive relay S1 of system BMS closure, the outer relay S5 of charge relay S2, DC, and disconnect relay S4 in DC；
When lithium battery group charges over-voltage, lithium battery group and uninterruptible power supply UPS disconnect charging connection, battery management system BMS
Relay S4 in closure total positive relay S1, DC, and disconnect the outer relay S5 of charge relay S2, DC；
When lithium battery group electric discharge is under-voltage, lithium battery group and uninterruptible power supply UPS disconnect electric discharge connection, battery management system BMS
Relay S4 in closed DC, and disconnect total positive relay S1, the outer relay S5 of charge relay S2, DC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267823.3A CN109861382B (en) | 2019-04-03 | 2019-04-03 | Power supply system capable of preventing surge voltage from impacting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910267823.3A CN109861382B (en) | 2019-04-03 | 2019-04-03 | Power supply system capable of preventing surge voltage from impacting |
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| CN109861382A true CN109861382A (en) | 2019-06-07 |
| CN109861382B CN109861382B (en) | 2023-11-21 |
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| CN110429697A (en) * | 2019-09-11 | 2019-11-08 | 杭州协能科技股份有限公司 | Under-voltage protecting circuit and guard method |
| CN110994781A (en) * | 2019-12-28 | 2020-04-10 | 广州宝狮新能源有限公司 | UPS lithium battery integrated power supply system |
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| CN208585115U (en) * | 2018-06-26 | 2019-03-08 | 河南锂动电源有限公司 | A kind of lithium battery high voltage system being exclusively used in shield electric traction locomotive |
| CN208469567U (en) * | 2018-06-27 | 2019-02-05 | 珠海银隆电器有限公司 | A kind of high-voltage control circuit and high voltage control case |
| CN209571874U (en) * | 2019-04-03 | 2019-11-01 | 广州宝狮新能源有限公司 | A kind of power-supply system of anti-surge voltage impact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110429697A (en) * | 2019-09-11 | 2019-11-08 | 杭州协能科技股份有限公司 | Under-voltage protecting circuit and guard method |
| CN110994781A (en) * | 2019-12-28 | 2020-04-10 | 广州宝狮新能源有限公司 | UPS lithium battery integrated power supply system |
| CN110994781B (en) * | 2019-12-28 | 2024-05-03 | 广州宝狮新能源有限公司 | UPS lithium battery integrated power supply system |
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