CN111196156A - Equalization circuit fault detection method and system of battery monitoring unit and vehicle - Google Patents
Equalization circuit fault detection method and system of battery monitoring unit and vehicle Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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Abstract
The invention discloses a method and a system for detecting faults of an equalizing circuit of a battery monitoring unit and a vehicle. The method for detecting the faults of the equalizing circuit of the battery monitoring unit comprises the following steps: judging whether the condition that two adjacent equalization circuit switches are both conducted exists; and if so, determining that the equalizing circuit of the battery monitoring unit is in fault. The method for detecting the faults of the equalizing circuit of the battery monitoring unit can accurately detect whether the equalizing circuit of the battery monitoring unit has the faults or not, so that the problem of simultaneous equalization of adjacent single batteries can be effectively solved, the burning of the circuit or the single batteries caused by overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a system for detecting faults of an equalizing circuit of a battery monitoring unit and a vehicle.
Background
The structure of a battery monitoring unit in the related art is shown in fig. 1, and fig. 2 is a schematic diagram of an equalizing circuit structure of an analog acquisition front-end chip of the battery monitoring unit in the related art. Referring to fig. 1 and 2, a logic module in the analog acquisition front end controls a switch SW of the equalization control to be closed according to an instruction, so that a single voltage forms a loop through an equalization resistor R, and the electric energy is consumed to achieve the equalization purpose.
Under the equalizing circuit architecture, when one of the switches SW1 is closed and SW2 is opened, CELL1 forms an equalizing loop through equalizing resistors R0, R1 and SW1 at two ends, the equalizing current is U/2R, and the equalizing power on R0 and R1 is P0-U2The ratio of/4R; if SW1 and SW2 are closed simultaneously, CELL1 and CELL2 form an equalizing loop through R2, SW2, SW1 and R0, the current flowing through R2 and R0 is U/R, and the equalizing power on R0 and R2 is P1-U2/R. As can be seen from the above, since P1 is 4P0, when the circuit works normally, it is to be avoided that two adjacent equalization switches are closed at the same time, otherwise, the current on the equalization resistor is too large, and the circuit is overheated due to overheating, which causes adverse effects.
Aiming at the balance architecture, in order to avoid the problem of overlarge current caused by simultaneous balance of two adjacent monomers, the current mode is controlled by software. (i.e., the switch control commands of the SW come from the logic module, the instructions of the logic module come from the control instructions of the software, and the control instructions of the software are controlled to avoid the simultaneous closing of two adjacent SW). The related art is mainly completed through software control, and the main process is shown in fig. 3, and the process is as follows:
1) the software sends a balance control command to a logic module of the battery monitoring unit;
2) the logic module sends out a corresponding SW control command according to the instruction;
3) and the SW control command controls the corresponding SW to be closed, so that the equalizing circuit works.
Namely: the control commands for equalizing adjacent cells simultaneously are prevented from occurring in the software of the first step to prevent equalizing adjacent cells simultaneously.
The above control is an open-loop control, which can ensure that the issued balancing control command does not have a problem, but the links from the command received by the LOGIC module to the SW control balancing circuit may have a problem, so that the problem of simultaneous balancing of adjacent cells is not fundamentally solved, for example: the instructions received by the LOGIC module are interfered, so that errors occur, the LOGIC module has problems, SW is damaged, short circuits occur and the like, or the problem that adjacent single bodies are balanced simultaneously can be caused.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art described above.
To this end, a first object of the present invention is to provide a method for detecting a failure of an equalization circuit of a battery monitoring unit. The method can avoid the burning of the circuit or the single battery caused by overlarge equalizing current, and improve the safety and the reliability of battery equalization.
The second objective of the present invention is to provide a system for detecting faults of an equalizing circuit of a battery monitoring unit.
A third object of the present invention is to provide a battery management system.
A fourth object of the invention is to propose a vehicle.
In order to achieve the above object, a first aspect of the present invention discloses a method for detecting faults of an equalization circuit of a battery monitoring unit, where the battery monitoring unit includes N equalization circuits corresponding to N single batteries in a power battery, and each equalization circuit is provided with an equalization circuit switch, and the method includes the following steps: judging whether the condition that two adjacent equalization circuit switches are both conducted exists; and if so, determining that the equalizing circuit of the battery monitoring unit is in fault.
According to the method for detecting the faults of the equalizing circuit of the battery monitoring unit, whether the equalizing circuit of the battery monitoring unit has the faults or not can be accurately detected, so that the problem that adjacent single batteries are equalized at the same time can be effectively solved, the phenomenon that the circuit or the single batteries are burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
In some examples, before determining whether there is a case where both of the two adjacent equalization circuit switches are turned on, the method further includes: respectively detecting the voltage at two ends of each equalizing circuit switch in the N equalizing circuits; and judging whether the corresponding equalizing circuit switch is conducted or not according to the voltage at the two ends of each equalizing circuit switch.
In some examples, the determining whether the corresponding equalization circuit switch is on according to the voltage across each equalization circuit switch includes: judging whether the voltages at two ends of each equalizing circuit switch are consistent or not; if yes, the corresponding equalization circuit switch is judged to be connected, otherwise, the corresponding equalization circuit switch is judged to be disconnected.
The second aspect of the present invention discloses a system for detecting faults of an equalization circuit of a battery monitoring unit, wherein the battery monitoring unit comprises N equalization circuits corresponding to N single batteries in a power battery one by one, each equalization circuit is provided with an equalization circuit switch, and the system comprises: the adjacent switch state logic judgment module is used for judging whether the two adjacent equalization circuit switches are conducted simultaneously; and the fault state logic judgment module is used for determining that the equalizing circuit of the battery monitoring unit has a fault when the adjacent switch state logic judgment module judges that at least one adjacent two equalizing circuit switches are simultaneously conducted.
According to the equalizing circuit fault detection system of the battery monitoring unit, whether the equalizing circuit of the battery monitoring unit has a fault or not can be accurately detected, so that the problem of simultaneous equalization of adjacent single batteries can be effectively solved, the phenomenon that the circuit or the single battery is burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
In some examples, further comprising: and the switch state monitoring module is used for monitoring the voltages at two ends of each equalizing circuit switch in the N equalizing circuits and judging whether the corresponding equalizing circuit switch is switched on or not according to the voltages at two ends of each equalizing circuit switch.
In some examples, the switch state monitoring module includes: and the voltage comparison circuits comprise output ends, and the N voltage comparison circuits are connected with the N equalizing circuit switches in a one-to-one correspondence manner so as to detect the voltages at two ends of the corresponding equalizing circuit switches and compare the voltages at two ends of the corresponding equalizing circuit switches so as to output switch logic signals through the output ends.
In some examples, the adjacent switch state logic determination module includes: and two input ends of an Mth AND gate in the N AND gates are connected with the output end of an Mth voltage comparison circuit in the N voltage comparison circuits and the output end of an M +1 th voltage comparison circuit in a one-to-one correspondence manner so as to carry out logic AND operation on a switch logic signal at the output end of the Mth voltage comparison circuit and a switch logic signal at the output end of the M +1 th voltage comparison circuit and output a logic AND signal.
In some examples, the fault status logic determination module includes: and the OR gate circuit is respectively connected with the output ends of the N AND gate circuits so as to carry out logical OR operation on the N logical AND signals output by the output ends of the N AND gate circuits and judge whether the equalizing circuit of the battery monitoring unit has faults or not according to the output logical OR signals.
A third aspect of the present invention discloses a battery management system, comprising: the equalization circuit fault detection system of the battery monitoring unit according to the embodiment of the second aspect described above. The battery management system can accurately detect whether the equalizing circuit of the battery monitoring unit has faults or not, so that the problem that adjacent single batteries are equalized simultaneously can be effectively solved, further, the circuit or the single batteries are burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
A fourth aspect of the invention discloses a vehicle, comprising: the battery management system according to the embodiment of the third aspect described above. The vehicle is an electric automobile, and the vehicle can accurately detect whether the equalizing circuit of the battery monitoring unit has faults or not, so that the problem of simultaneous equalization of adjacent single batteries can be effectively avoided, further, the phenomenon that the circuit or the single battery is burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is an architecture diagram of a battery monitoring unit in the related art;
fig. 2 is a diagram of an equalizing circuit architecture of an analog acquisition front-end chip of a battery monitoring unit in the related art;
fig. 3 is a flowchart of equalization control of a battery monitoring unit in the related art;
FIG. 4 is a flow chart of a method of equalization circuit fault detection for a battery monitoring unit according to one embodiment of the present invention;
fig. 5 is a block diagram of an equalizer circuit failure detection system of a battery monitoring unit according to an embodiment of the present invention;
FIG. 6 is an architectural diagram of a battery monitoring unit in accordance with one embodiment of the present invention;
FIG. 7 is a circuit diagram of a equalization switch fault monitoring module of one embodiment of the present invention;
fig. 8 is a schematic diagram of functional modules of a balanced switch fault monitoring module according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes a method, a system and a vehicle for detecting faults of an equalization circuit of a battery monitoring unit according to an embodiment of the invention with reference to the accompanying drawings.
Before describing the method for detecting the fault of the equalization circuit of the battery monitoring unit according to the embodiment of the invention, the equalization circuit of the battery monitoring unit is described first, wherein the battery monitoring unit comprises N equalization circuits which correspond to N single batteries in the power battery one by one.
Fig. 4 is a flowchart of an equalization circuit fault detection method of a battery monitoring unit according to an embodiment of the present invention. As shown in fig. 4, the method for detecting the failure of the equalization circuit of the battery monitoring unit according to one embodiment of the present invention includes the following steps:
s401: and judging whether the condition that two adjacent equalization circuit switches are both conducted exists.
S402: and if so, determining that the equalizing circuit of the battery monitoring unit is in fault.
In an embodiment of the present invention, before step S401, the method may further include: and respectively detecting the voltage at two ends of each equalizing circuit switch in the N equalizing circuits, and judging whether the corresponding equalizing circuit switch is conducted or not according to the voltage at two ends of each equalizing circuit switch.
Further, whether the corresponding equalization circuit switch is conducted or not is judged according to the voltage at the two ends of each equalization circuit switch, and the method comprises the following steps: judging whether the voltages at two ends of each equalizing circuit switch are consistent or not; if yes, the corresponding equalization circuit switch is judged to be connected, otherwise, the corresponding equalization circuit switch is judged to be disconnected.
According to the method for detecting the faults of the equalizing circuit of the battery monitoring unit, whether the equalizing circuit of the battery monitoring unit has the faults or not can be accurately detected, so that the problem that adjacent single batteries are equalized at the same time can be effectively solved, the phenomenon that the circuit or the single batteries are burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
Fig. 5 is a block diagram of a configuration of an equalization circuit failure detection system of a battery monitoring unit according to an embodiment of the present invention. As shown in fig. 5, an equalizing circuit fault detecting system 500 of a battery monitoring unit according to an embodiment of the present invention includes: a switch state monitoring module 510, an adjacent switch state logic judgment module 510, and a fault state logic judgment module 520.
The adjacent switch state logic determining module 510 is configured to determine whether two adjacent equalization circuit switches are turned on simultaneously. The failure state logic determining module 520 is configured to determine that the balancing circuit of the battery monitoring unit fails when the adjacent switch state logic determining module 510 determines that at least one adjacent two balancing circuit switches are turned on simultaneously.
Wherein, still include: and the switch state monitoring module 530 is configured to monitor voltages at two ends of each equalization circuit switch in the N equalization circuits, and determine whether the corresponding equalization circuit switch is turned on according to the voltages at two ends of each equalization circuit switch.
As shown in fig. 6-8, the switch state monitoring module 530 includes: and the voltage comparison circuits comprise output ends, and the N voltage comparison circuits are connected with the N equalizing circuit switches in a one-to-one correspondence manner so as to detect the voltages at two ends of the corresponding equalizing circuit switches and compare the voltages at two ends of the corresponding equalizing circuit switches so as to output switch logic signals through the output ends.
The adjacent switch state logic determining module 510 includes: and two input ends of an Mth AND gate in the N AND gates are connected with the output end of an Mth voltage comparison circuit in the N voltage comparison circuits and the output end of an M +1 th voltage comparison circuit in a one-to-one correspondence manner so as to carry out logic AND operation on a switch logic signal at the output end of the Mth voltage comparison circuit and a switch logic signal at the output end of the M +1 th voltage comparison circuit and output a logic AND signal.
The fault status logic determination module 520 includes: and the OR gate circuit is respectively connected with the output ends of the N AND gate circuits so as to carry out logical OR operation on the N logical AND signals output by the output ends of the N AND gate circuits and judge whether the equalizing circuit of the battery monitoring unit has faults or not according to the output logical OR signals.
Specifically, with reference to fig. 5 to 8, an equalization failure monitoring module is added to monitor the equalization control signal and output the monitoring result, where the equalization control signal may be output to the analog front-end chip through the GPIO and then transmitted to the BCU, or of course, the monitoring result may be directly sent to the BCU or other external controllers). The working principle is as follows:
taking the example of including 13 single batteries, namely: the BTT0 to BTT12 introduce the control signal of the equalizing circuit, namely the signals of the S0-S12 pins;
the S1 and S0, S2 and S1 up to the S12 and S11 signals enter the comparator circuit (i.e., voltage comparison circuit), respectively;
when SWn is closed, Sn is short-circuited with Sn-1, then: let the comparator circuit output State _ SWn be low (i.e. output logic level is 0);
when SWn is switched off, Sn is short-circuited with Sn-1, and the voltage at Sn is larger than that at Sn-1 according to the circuit structure, then: making the comparator circuit output State _ SWn be high level (i.e. output logic level is 1);
the signals State _ SW1 to State _ SW12 of each switch of SW1 to SW12 are respectively input to the logic judgment module of the adjacent switch State, the circuit in the module is an AND gate circuit, the logic judgment output is carried out on the State of every two adjacent switches, wherein,
if both State _ SWn-1 and State _ SWn are 1, both switches are closed, and the fault State is output as 1;
if at least one of State _ SWn-1 and State _ SWn is 0, at least one of the two switches is disconnected, the two switches are in a non-fault State, and 0 is output;
the state logic judgment of every two adjacent groups of two-way switches enters a fault processing circuit (namely a fault state logic judgment module 5), the circuit is an OR gate and can carry out logic judgment on all input signals, wherein,
if at least one of all the input signals is 1, outputting 1, and outputting a fault signal (which indicates that at least one path of fault exists);
if all the input signals are 0, 0 is output, and the circuit is normal.
And then, whether the two adjacent switches are simultaneously closed or not can be judged according to the final output signal, so that the purpose of carrying out fault monitoring on the fault is achieved.
According to the equalizing circuit fault detection system of the battery monitoring unit, whether the equalizing circuit of the battery monitoring unit has a fault or not can be accurately detected, so that the problem of simultaneous equalization of adjacent single batteries can be effectively solved, the phenomenon that the circuit or the single battery is burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
Further, an embodiment of the present invention discloses a battery management system, including: the system for detecting the faults of the equalization circuit of the battery monitoring unit according to the embodiment. The battery management system can accurately detect whether the equalizing circuit of the battery monitoring unit has faults or not, so that the problem that adjacent single batteries are equalized simultaneously can be effectively solved, further, the circuit or the single batteries are burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
Further, an embodiment of the present invention discloses a vehicle, including: a battery management system according to any of the embodiments described above. The vehicle is an electric automobile, for example, the vehicle can accurately detect whether the equalizing circuit of the battery monitoring unit has a fault or not, so that the problem of simultaneous equalization of adjacent single batteries can be effectively avoided, further, the phenomenon that the circuit or the single battery is burnt due to overlarge equalizing current can be avoided, and the safety and the reliability of battery equalization are improved.
In addition, other configurations and functions of the vehicle according to the embodiment of the present invention are known to those skilled in the art, and will not be described herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are used in a broad sense, and may be, for example, mechanically or electrically connected, or may be connected by two elements, directly or indirectly through an intermediate medium, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A method for detecting faults of equalizing circuits of a battery monitoring unit is characterized in that the battery monitoring unit comprises N equalizing circuits which correspond to N single batteries in a power battery one by one, and each equalizing circuit is provided with an equalizing circuit switch, and the method comprises the following steps:
judging whether the condition that two adjacent equalization circuit switches are both conducted exists;
and if so, determining that the equalizing circuit of the battery monitoring unit is in fault.
2. The method for detecting faults of equalization circuits of battery monitoring units according to claim 1, wherein before the step of judging whether the two adjacent equalization circuit switches are both on, the method further comprises the following steps:
respectively detecting the voltage at two ends of each equalizing circuit switch in the N equalizing circuits;
and judging whether the corresponding equalizing circuit switch is conducted or not according to the voltage at the two ends of each equalizing circuit switch.
3. The method for detecting faults of equalization circuits of battery monitoring units according to claim 1, wherein the step of judging whether the corresponding equalization circuit switch is conducted according to the voltage at two ends of each equalization circuit switch comprises the following steps:
judging whether the voltages at two ends of each equalizing circuit switch are equal or not;
if yes, the corresponding equalization circuit switch is judged to be connected, otherwise, the corresponding equalization circuit switch is judged to be disconnected.
4. The utility model provides a balanced circuit fault detection system of battery monitoring unit, its characterized in that, battery monitoring unit includes a N balanced circuit of a N battery cell in the one-to-one correspondence power battery, is equipped with the balanced circuit switch on every balanced circuit, the system includes:
the adjacent switch state logic judgment module is used for judging whether the two adjacent equalization circuit switches are conducted simultaneously;
and the fault state logic judgment module is used for determining that the equalizing circuit of the battery monitoring unit has a fault when the adjacent switch state logic judgment module judges that at least one adjacent two equalizing circuit switches are simultaneously conducted.
5. The equalization circuit fault detection system of a battery monitoring unit of claim 4, further comprising:
and the switch state monitoring module is used for monitoring the voltages at two ends of each equalizing circuit switch in the N equalizing circuits and judging whether the corresponding equalizing circuit switch is switched on or not according to the voltages at two ends of each equalizing circuit switch.
6. The system of claim 5, wherein the switch state monitoring module comprises:
and the voltage comparison circuits comprise output ends, and the N voltage comparison circuits are connected with the N equalizing circuit switches in a one-to-one correspondence manner so as to detect the voltages at two ends of the corresponding equalizing circuit switches and compare the voltages at two ends of the corresponding equalizing circuit switches so as to output switch logic signals through the output ends.
7. The system of claim 6, wherein the adjacent switch state logic determination module comprises:
and two input ends of an Mth AND gate in the N AND gates are connected with the output end of an Mth voltage comparison circuit in the N voltage comparison circuits and the output end of an M +1 th voltage comparison circuit in a one-to-one correspondence manner so as to carry out logic AND operation on a switch logic signal at the output end of the Mth voltage comparison circuit and a switch logic signal at the output end of the M +1 th voltage comparison circuit and output a logic AND signal.
8. The system of claim 7, wherein the fault status logic determining module comprises:
and the OR gate circuit is respectively connected with the output ends of the N AND gate circuits so as to carry out logical OR operation on the N logical AND signals output by the output ends of the N AND gate circuits and judge whether the equalizing circuit of the battery monitoring unit has faults or not according to the output logical OR signals.
9. A battery management system, comprising: the equalization circuit fault detection system of a battery monitoring unit according to any of claims 4-8.
10. A vehicle, characterized by comprising: the battery management system of claim 9.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593909A (en) * | 2012-03-02 | 2012-07-18 | 宁德新能源科技有限公司 | Reliability detecting system for battery balancing circuit |
| JP2016134948A (en) * | 2015-01-16 | 2016-07-25 | トヨタ自動車株式会社 | Power supply system |
| CN107097668A (en) * | 2017-05-03 | 2017-08-29 | 东莞钜威动力技术有限公司 | The passive equalizing circuit and its equalization methods and abatement detecting method of electric automobile |
| CN107528353A (en) * | 2016-06-21 | 2017-12-29 | 赖永利 | One kind series winding battery voltage balanced method and equalizing circuit |
| CN207098691U (en) * | 2017-07-31 | 2018-03-13 | 北京新能源汽车股份有限公司 | Power battery system, equalizing circuit thereof and electric automobile |
| CN108020777A (en) * | 2017-12-28 | 2018-05-11 | 北京普莱德新能源电池科技有限公司 | The fault detection method and failure detector of battery equalizing circuit |
| CN108110841A (en) * | 2017-12-29 | 2018-06-01 | 北京智行鸿远汽车有限公司 | Battery equalizing circuit and battery equalizing circuit detection method |
-
2018
- 2018-11-16 CN CN201811365843.6A patent/CN111196156B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593909A (en) * | 2012-03-02 | 2012-07-18 | 宁德新能源科技有限公司 | Reliability detecting system for battery balancing circuit |
| JP2016134948A (en) * | 2015-01-16 | 2016-07-25 | トヨタ自動車株式会社 | Power supply system |
| CN107528353A (en) * | 2016-06-21 | 2017-12-29 | 赖永利 | One kind series winding battery voltage balanced method and equalizing circuit |
| CN107097668A (en) * | 2017-05-03 | 2017-08-29 | 东莞钜威动力技术有限公司 | The passive equalizing circuit and its equalization methods and abatement detecting method of electric automobile |
| CN207098691U (en) * | 2017-07-31 | 2018-03-13 | 北京新能源汽车股份有限公司 | Power battery system, equalizing circuit thereof and electric automobile |
| CN108020777A (en) * | 2017-12-28 | 2018-05-11 | 北京普莱德新能源电池科技有限公司 | The fault detection method and failure detector of battery equalizing circuit |
| CN108110841A (en) * | 2017-12-29 | 2018-06-01 | 北京智行鸿远汽车有限公司 | Battery equalizing circuit and battery equalizing circuit detection method |
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