CN107991568A - A kind of hardware testing circuit for supporting to test multiple CSC products - Google Patents
A kind of hardware testing circuit for supporting to test multiple CSC products Download PDFInfo
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- CN107991568A CN107991568A CN201711205629.XA CN201711205629A CN107991568A CN 107991568 A CN107991568 A CN 107991568A CN 201711205629 A CN201711205629 A CN 201711205629A CN 107991568 A CN107991568 A CN 107991568A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/01—Subjecting similar articles in turn to test, e.g. "go/no-go" tests in mass production; Testing objects at points as they pass through a testing station
- G01R31/013—Testing passive components
Abstract
The invention discloses a kind of hardware testing circuit for supporting to test multiple CSC products, includes hardware circuit, battery pack and the 1 point of multi-line plate of the multigroup voltage of output, the hardware circuit of 12 groups of voltage of output is that battery pack charges, and battery pack connects 1 point of multi-line plate；Hardware circuit includes at least two groups of voltage follower circuits, and the quantity of voltage follower circuit is n, and the hardware circuit for exporting multigroup voltage is respectively first voltage output circuit and subsequent voltage output circuit, and the quantity of subsequent voltage output circuit is n 1；Each voltage follower circuit includes 12V input circuits, 12V turns 5V circuits and 5V turns 1.2~5V circuits；The 12V of voltage follower circuit turn 5V circuits and 5V turn 1.2~5V circuit structures correspond to it is consistent.The present invention powers CSC by battery, supports to test the hardware testing circuit of multiple CSC products, frock can not meet current needs when solving the problems, such as once to test multiple CSC products.
Description
Technical field
The present invention relates to a kind of hardware testing circuit for supporting to test multiple CSC products.
Background technology
Batteries of electric automobile bag is in series by the power lithium cell electric core of tens to hundreds of string, these batteries used
The balanced of voltage is by CSC (Cell Supervisory between the monitoring of cell voltage and battery and battery in journey
Controller) module is realized, use is to 6~8pcs CSC modules, 1 survey of foundries producing line in a current electric automobile
Try 1pcs, 2 minutes testing times.Follow-up test plan can increase burn-in test, it is necessary to power on burn-in test 5 it is small when, if after
It is continuous to continue to use old test mode, production efficiency can be caused extremely low, burn-in test scheme can not import.New hardware testing circuit side
Case, can once test multiple (most 15pcs) CSC products, and producing line resources of production can be made full use of by being performed according to this scheme,
Smoothly import aging power up test scheme.
Factory end CSC is tested, and test is two following at present：1. 12 groups of electricity are mainly simulated by the hardware circuit of test fixture
Pressure voltage output give CSC to be tested, and CSC reads magnitude of voltage size, with the standard CSC readings voltage difference of test fixture whether
In specification limit；2. issuing orders by the harness that communicates, it is balanced to be opened to CSC, euqalizing current size is read, whether is Cutoff current value
In specification.Judge whether tested CSC is non-defective unit by 2 points above.
The shortcomings that existing：
1. current factory end testing scheme can only once test 1pcs, follow-up producing line increase powers on the burn-in test time, one
The scheme of secondary test 1pcs can not import.
2. balanced open of 12 groups of the hardware circuit of this scheme every group of voltage output maximum output current 0.6A, 1pcs CSC is surveyed
Examination moment needs 0.2A electric currents, so this scheme, which cannot also upgrade to 1 time, tests multiple CSC.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of support survey powered by battery to CSC
The hardware testing circuit of multiple CSC products is tried, current needs can not be met by solving frock when once testing multiple CSC products
Problem.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of hardware for supporting to test multiple CSC products
Test circuit, includes hardware circuit, battery pack and the 1 point of multi-line plate of the multigroup voltage of output, exports the hardware electricity of 12 groups of voltage
Road is charged for battery pack, and battery pack connects 1 point of multi-line plate；
Exporting the hardware circuit of multigroup voltage includes at least two groups of voltage follower circuits, and the quantity of voltage follower circuit is n,
N is the integer more than 1, and the hardware circuit for exporting multigroup voltage is respectively first voltage output circuit and subsequent voltage output electricity
Road, the quantity of subsequent voltage output circuit is n-1；
Each voltage follower circuit includes 12V input circuits, 12V turns 5V circuits and 5V turns 1.2~5V circuits；
Wherein, the 12V of each voltage follower circuit turn 5V circuits and 5V turn 1.2~5V circuit structures correspond to it is consistent；
When the quantity of subsequent voltage output circuit is greater than or equal to 2, it is defeated that subsequent voltage output circuit includes middle part voltage
Go out circuit and last voltage follower circuit all the way, when middle part voltage follower circuit quantity is more than 1, each middle part voltage follower circuit
12V input circuit structures it is consistent, finally the 12V input circuits of voltage follower circuit and middle part voltage follower circuit all the way
12V input circuit structures are inconsistent.
It is preferred that the hardware circuit for exporting multigroup voltage is the hardware circuit of 12 groups of voltage of output, battery pack is
12 18650 batteries are in series.
It is preferred that the 12V input circuits of first voltage output circuit include 12V voltage input ends and the first electricity
Resistance, 12V voltage input ends connect first resistor respectively and 12V turns 5V circuits.
It is preferred that the 12V input circuits of middle part voltage follower circuit include second resistance, 3rd resistor, the 4th
Resistance, the 5th resistance, the first P-MOS pipes, the first capacitance, the first triode and the first diode；
Second resistance and the first capacitance are in parallel, and one end of parallel circuit connects first resistor and the first diode respectively, in parallel
The other end ground connection of circuit；
First diode is connected with the first triode, and the emitter ground connection of the first triode, the base stage of the first triode connects
The first diode is connect, the collector of the first triode is connected with the 4th resistance, and the 4th resistance is connected with 3rd resistor, the 4th resistance
It is connected with the common node of 3rd resistor with the grid of the first P-MOS pipes, the source electrode of the first P-MOS pipes connects 12V power supplys respectively
And 3rd resistor, the drain electrode of the first P-MOS pipes are connected with the 5th resistance.
It is preferred that when middle part voltage follower circuit quantity is more than 1, the 12V inputs of each middle part voltage follower circuit
Circuit is sequentially connected.
It is preferred that finally all the way the 12V input circuits of voltage follower circuit include the 6th resistance, the 7th resistance,
8th resistance, the 2nd P-MOS pipes, the second capacitance, the second triode and the second diode；
Finally the 12V input circuits of voltage follower circuit are connected with the 12V input circuits of middle part voltage follower circuit all the way,
Wherein, the 8th resistance is in parallel with the second capacitance, and one end of the parallel circuit connects the second diode and upper middle part voltage all the way respectively
5th resistance of the 12V input circuits of output circuit, the other end ground connection of the parallel circuit；
Second diode is connected with the second triode, and the emitter ground connection of the second triode, the base stage of the second triode connects
The second diode is connect, the collector of the second triode is connected with the 7th resistance, and the 7th resistance is connected with the 6th resistance, the 7th resistance
It is connected with the common node of the 6th resistance with the grid of the 2nd P-MOS pipes, the source electrode of the 2nd P-MOS pipes connects 12V power supplys respectively
With the 6th resistance.
It is preferred that 12V turn 5V circuits include the 3rd capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance,
WRB1205S-3WR2 modules and inductance；
The Vin ends of WRB1205S-3WR2 modules are connected by inductance with 12V input circuits, WRB1205S-3WR2 modules
GND ends are grounded, and the both ends of inductance connect the 3rd capacitance and the 4th capacitance, the 3rd capacitance and the 4th capacity earth respectively；
+ V0 the ends of WRB1205S-3WR2 modules and indirect 6th capacitance at 0V ends, the 0V ends of WRB1205S-3WR2 modules
The 5th capacitance is connected between CS ends.
It is preferred that 5V turn 1.2~5V circuits include the 7th capacitance, the 8th capacitance, the 9th capacitance, the tenth capacitance,
9th resistance, slide rheostat, TPS786 voltage-stablizers, the 3rd diode and the 4th diode；
The EN ends and IN ends of TPS786 voltage-stablizers are connected with+V0 the ends of WRB1205S-3WR2 modules, TPS786 voltage-stablizers
GND ends connection WRB1205S-3WR2 modules 0V ends, between the IN ends and GND ends of TPS786 voltage-stablizers connect the 7th capacitance,
The 9th resistance is connected between the FB ends and GND ends of TPS786 voltage-stablizers, is provided between the OUT terminal of TPS786 voltage-stablizers and FB ends
The parallel circuit of slide rheostat and the 8th capacitance；
The 9th capacitance is provided between the OUT terminal of TPS786 voltage-stablizers and GND ends, the cathode of the 3rd diode connects respectively
The OUT terminal of TPS786 voltage-stablizers and the 9th capacitance, the anode of the 3rd diode connect the tenth capacitance and the 4th diode respectively
Anode, the tenth capacitance and the 4th diodes in parallel, the 9th capacitance, the tenth capacitance and the 4th diode with TPS786 voltage-stablizers
GND ends connect.
The beneficial effects of the invention are as follows：Powered by battery to CSC, support to test the hardware testing electricity of multiple CSC products
Road, frock can not meet current needs when solving the problems, such as once to test multiple CSC products.
Brief description of the drawings
Fig. 1 is circuit block diagram；
Fig. 2 is the hardware circuit diagram of 12 groups of voltage of output；
Fig. 3 is I circuit structure diagram in Fig. 2；
Fig. 4 is II circuit structure diagram in Fig. 2；
Fig. 5 is III circuit structure diagram in Fig. 2；
Fig. 6 is IV circuit structure diagram in Fig. 2；
Fig. 7 is branching structure schematic diagram.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
Term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
As shown in Fig. 1~Fig. 7, a kind of hardware testing circuit for supporting to test multiple CSC products, including the multigroup voltage of output
Hardware circuit, (such as CSC distributor plates in Fig. 7 can divide 16 road power supply harness, 16 roads electricity for battery pack and 1 point of multi-line plate
Source harness is used to power for 16 CSC, such as frock CSC, CSC_1 to be measured, CSC_2 to be measured,..., CSC_15 to be measured), CSC
It is connected by data cable with SCM system, SCM system reads data, and the hardware circuit of 12 groups of voltage of output is battery pack
Charging, battery pack connect 1 point of multi-line plate；
Exporting the hardware circuit of multigroup voltage includes at least two groups of voltage follower circuits, and the quantity of voltage follower circuit is n,
N is the integer more than 1, and the hardware circuit for exporting multigroup voltage is respectively first voltage output circuit and subsequent voltage output electricity
Road, the quantity of subsequent voltage output circuit is n-1；
Each voltage follower circuit includes 12V input circuits, 12V turns 5V circuits and 5V turns 1.2~5V circuits；
Wherein, the 12V of each voltage follower circuit turn 5V circuits and 5V turn 1.2~5V circuit structures correspond to it is consistent；
When the quantity of subsequent voltage output circuit is greater than or equal to 2, it is defeated that subsequent voltage output circuit includes middle part voltage
Go out circuit and last voltage follower circuit all the way, when middle part voltage follower circuit quantity is more than 1, each middle part voltage follower circuit
12V input circuit structures it is consistent, finally the 12V input circuits of voltage follower circuit and middle part voltage follower circuit all the way
12V input circuit structures are inconsistent.When the quantity of subsequent voltage output circuit is only 1, subsequent voltage output circuit is most
Voltage follower circuit all the way afterwards.
In a preferred embodiment, the hardware circuit for exporting multigroup voltage is the hardware circuit of 12 groups of voltage of output, electric
Pond group is in series for 12 18650 batteries.
In a preferred embodiment, as shown in Fig. 3 (i.e. I circuit in Fig. 2), the 12V of first voltage output circuit is defeated
Entering circuit includes 12V voltage input ends and first resistor, and 12V voltage input ends connect first resistor respectively and 12V turns 5V circuits.
In a preferred embodiment, as shown in Figure 4 (i.e. II circuit in Fig. 2), the 12V of middle part voltage follower circuit is defeated
Entering circuit includes second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first P-MOS pipes, the first capacitance, the first triode
With the first diode；
Second resistance and the first capacitance are in parallel, and one end of parallel circuit connects first resistor and the first diode respectively, in parallel
The other end ground connection of circuit；
First diode is connected with the first triode, and the emitter ground connection of the first triode, the base stage of the first triode connects
The first diode is connect, the collector of the first triode is connected with the 4th resistance, and the 4th resistance is connected with 3rd resistor, the 4th resistance
It is connected with the common node of 3rd resistor with the grid of the first P-MOS pipes, the source electrode of the first P-MOS pipes connects 12V power supplys respectively
And 3rd resistor, the drain electrode of the first P-MOS pipes are connected with the 5th resistance.
In a preferred embodiment, when voltage follower circuit quantity in middle part is more than 1, each middle part voltage follower circuit
12V input circuits are sequentially connected.
In a preferred embodiment, finally the 12V input circuits of voltage follower circuit include the 6th resistance, the 7th all the way
Resistance, the 8th resistance, the 2nd P-MOS pipes, the second capacitance, the second triode and the second diode；
Finally the 12V input circuits of voltage follower circuit are connected with the 12V input circuits of middle part voltage follower circuit all the way,
Wherein, the 8th resistance is in parallel with the second capacitance, and one end of the parallel circuit connects the second diode and upper middle part voltage all the way respectively
5th resistance of the 12V input circuits of output circuit, the other end ground connection of the parallel circuit；
Second diode is connected with the second triode, and the emitter ground connection of the second triode, the base stage of the second triode connects
The second diode is connect, the collector of the second triode is connected with the 7th resistance, and the 7th resistance is connected with the 6th resistance, the 7th resistance
It is connected with the common node of the 6th resistance with the grid of the 2nd P-MOS pipes, the source electrode of the 2nd P-MOS pipes connects 12V power supplys respectively
With the 6th resistance.
In a preferred embodiment, as shown in Figure 5 (i.e. III circuit in Fig. 2), 12V, which turns 5V circuits, includes the 3rd electricity
Appearance, the 4th capacitance, the 5th capacitance, the 6th capacitance, WRB1205S-3WR2 modules and inductance；
The Vin ends of WRB1205S-3WR2 modules are connected by inductance with 12V input circuits, WRB1205S-3WR2 modules
GND ends are grounded, and the both ends of inductance connect the 3rd capacitance and the 4th capacitance, the 3rd capacitance and the 4th capacity earth respectively；
+ V0 the ends of WRB1205S-3WR2 modules and indirect 6th capacitance at 0V ends, the 0V ends of WRB1205S-3WR2 modules
The 5th capacitance is connected between CS ends.
In a preferred embodiment, as shown in Figure 6 (i.e. IV circuit in Fig. 2), 5V, which turns 1.2~5V circuits, includes the 7th
(by adjusting this resistance, adjustment is defeated for capacitance, the 8th capacitance, the 9th capacitance, the tenth capacitance, the 9th resistance, slide rheostat
Go out voltage), TPS786 voltage-stablizers, the 3rd diode and the 4th diode；
The EN ends and IN ends of TPS786 voltage-stablizers are connected with+V0 the ends of WRB1205S-3WR2 modules, TPS786 voltage-stablizers
GND ends connection WRB1205S-3WR2 modules 0V ends, between the IN ends and GND ends of TPS786 voltage-stablizers connect the 7th capacitance,
The 9th resistance is connected between the FB ends and GND ends of TPS786 voltage-stablizers, is provided between the OUT terminal of TPS786 voltage-stablizers and FB ends
The parallel circuit of slide rheostat and the 8th capacitance；
The 9th capacitance is provided between the OUT terminal of TPS786 voltage-stablizers and GND ends, the cathode of the 3rd diode connects respectively
The OUT terminal of TPS786 voltage-stablizers and the 9th capacitance, the anode of the 3rd diode connect the tenth capacitance and the 4th diode respectively
Anode, the tenth capacitance and the 4th diodes in parallel, the 9th capacitance, the tenth capacitance and the 4th diode with TPS786 voltage-stablizers
GND ends connect.
The advantage of this programme：
1st, 12 groups of output voltages of hardware circuit are exported to 12 group of 18650 battery of series connection, and real time charging is carried out to battery,
12 Battery packs are powered CSC to be tested, do not have current limit problem.
2nd, 12 groups of output voltages of hardware circuit, every group in real time can be charged battery, is filled with maximum output 1.5A electric currents
Cell voltage will not be pulled low because of over-discharge in code insurance card test process.
3rd, the output voltage of hardware circuit, can be adjusted by slide rheostat, can basis in actual use
Need to adjust (adjustable extent 1.2V~5V, tentative at present to be adjusted to 4.2V).
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (8)
- A kind of 1. hardware testing circuit for supporting to test multiple CSC products, it is characterised in that：It is hard that it includes the multigroup voltage of output Part circuit, battery pack and 1 point of multi-line plate, the hardware circuit for exporting 12 groups of voltage charge for battery pack, and battery pack is connected more than 1 point Wiring board；Exporting the hardware circuit of multigroup voltage includes at least two groups of voltage follower circuits, and the quantity of voltage follower circuit is n, and n is Integer more than 1, the hardware circuit for exporting multigroup voltage are respectively first voltage output circuit and subsequent voltage output circuit, after The quantity of continuous voltage follower circuit is n-1；Each voltage follower circuit includes 12V input circuits, 12V turns 5V circuits and 5V turns 1.2~5V circuits；Wherein, the 12V of each voltage follower circuit turn 5V circuits and 5V turn 1.2~5V circuit structures correspond to it is consistent；When the quantity of subsequent voltage output circuit is greater than or equal to 2, subsequent voltage output circuit includes middle part voltage output electricity Road and last voltage follower circuit all the way, when middle part voltage follower circuit quantity is more than 1, each middle part voltage follower circuit 12V input circuit structures are consistent, finally the 12V of the 12V input circuits of voltage follower circuit and middle part voltage follower circuit all the way Input circuit structure is inconsistent.
- A kind of 2. hardware testing circuit for supporting to test multiple CSC products according to claim 1, it is characterised in that：It is defeated The hardware circuit for going out multigroup voltage is the hardware circuit of 12 groups of voltage of output, and battery pack is in series for 12 18650 batteries.
- A kind of 3. hardware testing circuit for supporting to test multiple CSC products according to claim 1 or 2, it is characterised in that： The 12V input circuits of first voltage output circuit include 12V voltage input ends and first resistor, and 12V voltage input ends connect respectively Connect first resistor and 12V turns 5V circuits.
- A kind of 4. hardware testing circuit for supporting to test multiple CSC products according to claim 3, it is characterised in that：In The 12V input circuits of portion's voltage follower circuit include second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first P-MOS Pipe, the first capacitance, the first triode and the first diode；Second resistance and the first capacitance are in parallel, and one end of parallel circuit connects first resistor and the first diode, parallel circuit respectively The other end ground connection；First diode is connected with the first triode, the emitter of the first triode ground connection, the base stage connection of the first triode the One diode, the collector of the first triode are connected with the 4th resistance, and the 4th resistance is connected with 3rd resistor, the 4th resistance and The common node of three resistance is connected with the grid of the first P-MOS pipes, and the source electrode of the first P-MOS pipes connects 12V power supplys and respectively Three resistance, the drain electrode of the first P-MOS pipes are connected with the 5th resistance.
- A kind of 5. hardware testing circuit for supporting to test multiple CSC products according to claim 4, it is characterised in that：In When portion's voltage follower circuit quantity is more than 1, the 12V input circuits of each middle part voltage follower circuit are sequentially connected.
- A kind of 6. hardware testing circuit for supporting to test multiple CSC products according to claim 4 or 5, it is characterised in that： Finally all the way voltage follower circuit 12V input circuits include the 6th resistance, the 7th resistance, the 8th resistance, the 2nd P-MOS pipe, Second capacitance, the second triode and the second diode；Finally the 12V input circuits of voltage follower circuit are connected with the 12V input circuits of middle part voltage follower circuit all the way, its In, the 8th resistance is in parallel with the second capacitance, and one end of the parallel circuit connects the second diode respectively and the upper voltage of middle part all the way is defeated Go out the 5th resistance of the 12V input circuits of circuit, the other end ground connection of the parallel circuit；Second diode is connected with the second triode, the emitter of the second triode ground connection, the base stage connection of the second triode the Two diodes, the collector of the second triode are connected with the 7th resistance, and the 7th resistance is connected with the 6th resistance, the 7th resistance and The common node of six resistance is connected with the grid of the 2nd P-MOS pipes, and the source electrode of the 2nd P-MOS pipes connects 12V power supplys and respectively Six resistance.
- A kind of 7. hardware testing circuit for supporting to test multiple CSC products according to claim 6, it is characterised in that：12V Turning 5V circuits includes the 3rd capacitance, the 4th capacitance, the 5th capacitance, the 6th capacitance, WRB1205S-3WR2 modules and inductance；The Vin ends of WRB1205S-3WR2 modules are connected by inductance with 12V input circuits, the GND of WRB1205S-3WR2 modules End ground connection, the both ends of inductance connect the 3rd capacitance and the 4th capacitance, the 3rd capacitance and the 4th capacity earth respectively；+ V0 the ends of WRB1205S-3WR2 modules and indirect 6th capacitance at 0V ends, the 0V ends of WRB1205S-3WR2 modules and CS The 5th capacitance is connected between end.
- A kind of 8. hardware testing circuit for supporting to test multiple CSC products according to claim 7, it is characterised in that：5V Turn 1.2~5V circuits include the 7th capacitance, the 8th capacitance, the 9th capacitance, the tenth capacitance, the 9th resistance, slide rheostat, TPS786 voltage-stablizers, the 3rd diode and the 4th diode；The EN ends and IN ends of TPS786 voltage-stablizers are connected with+V0 the ends of WRB1205S-3WR2 modules, TPS786 voltage-stablizers GND ends connect the 0V ends of WRB1205S-3WR2 modules, and the 7th capacitance is connected between the IN ends and GND ends of TPS786 voltage-stablizers, The 9th resistance is connected between the FB ends and GND ends of TPS786 voltage-stablizers, is provided between the OUT terminal of TPS786 voltage-stablizers and FB ends The parallel circuit of slide rheostat and the 8th capacitance；The 9th capacitance is provided between the OUT terminal of TPS786 voltage-stablizers and GND ends, the cathode of the 3rd diode connects respectively The OUT terminal of TPS786 voltage-stablizers and the 9th capacitance, the anode of the 3rd diode connect the tenth capacitance and the 4th diode respectively Anode, the tenth capacitance and the 4th diodes in parallel, the 9th capacitance, the tenth capacitance and the 4th diode with TPS786 voltage-stablizers GND ends connect.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711205629.XA CN107991568B (en) | 2017-11-27 | 2017-11-27 | Hardware test circuit supporting test of multiple CSC products |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711205629.XA CN107991568B (en) | 2017-11-27 | 2017-11-27 | Hardware test circuit supporting test of multiple CSC products |
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| Publication Number | Publication Date |
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| CN107991568A true CN107991568A (en) | 2018-05-04 |
| CN107991568B CN107991568B (en) | 2020-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137818A (en) * | 2021-12-03 | 2022-03-04 | 北斗天汇（北京）科技有限公司 | Beidou short message watch with novel power supply method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100077141A (en) * | 2010-06-18 | 2010-07-07 | 안나영 | Battery charging system |
| CN205489605U (en) * | 2016-01-14 | 2016-08-17 | 深圳市创维群欣安防科技股份有限公司 | Time delay starting circuit and mobile unit |
| CN206489447U (en) * | 2017-02-22 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery management system hardware-in―the-loop test system |
-
2017
- 2017-11-27 CN CN201711205629.XA patent/CN107991568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100077141A (en) * | 2010-06-18 | 2010-07-07 | 안나영 | Battery charging system |
| CN205489605U (en) * | 2016-01-14 | 2016-08-17 | 深圳市创维群欣安防科技股份有限公司 | Time delay starting circuit and mobile unit |
| CN206489447U (en) * | 2017-02-22 | 2017-09-12 | 宁德时代新能源科技股份有限公司 | Battery management system hardware-in―the-loop test system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114137818A (en) * | 2021-12-03 | 2022-03-04 | 北斗天汇（北京）科技有限公司 | Beidou short message watch with novel power supply method |
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| CN107991568B (en) | 2020-03-31 |
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