CN104192018B - Battery management system and method for vehicle and vehicle - Google Patents

Battery management system and method for vehicle and vehicle Download PDF

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Publication number
CN104192018B
CN104192018B CN201410435952.6A CN201410435952A CN104192018B CN 104192018 B CN104192018 B CN 104192018B CN 201410435952 A CN201410435952 A CN 201410435952A CN 104192018 B CN104192018 B CN 104192018B
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China
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battery case
vehicle
cells
negative
positive electrode
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CN201410435952.6A
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Chinese (zh)
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CN104192018A (en
Inventor
狄彼德
彦斯·贝肯
罗伯特·丁力
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观致汽车有限公司
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    • Y02T10/7005

Abstract

The invention discloses a battery management system and method for a vehicle and the vehicle. The system comprises a system insulation fault detection module, a connection control module, an internal insulation fault detection module and a notification module. The system insulation fault detection module is used for detecting whether a first insulation resistor between the positive electrode or the negative electrode of a battery pack and a vehicle chassis meets a first preset condition after the positive electrode or the negative electrode of the battery pack in a battery compartment is connected with a wiring terminal of a motor of the vehicle. The connection control module is used for controlling the positive electrode or the negative electrode of the battery pack to be disconnected from the wiring terminal of the motor of the vehicle if the first insulation resistor does not meet the first preset condition. The internal insulation fault detection module is used for detecting whether a second insulation resistor between the positive electrode or the negative electrode of the battery pack and the battery compartment meets a second preset condition. The notification module is used for generating an external insulation fault message and sending the external insulation fault message to the vehicle if the second insulation resistor meets the second preset condition, and generating an internal insulation fault message and sending the internal insulation fault message to the vehicle if the second insulation resistor does not meets the second preset condition.

Description

For the battery management system of vehicle, method and vehicle

Technical field

The present invention relates to battery technology, more particularly to a kind of battery management system and method and bag for vehicle Include the vehicle of the system.

Background technology

The insulation protection of high pressure (HV) system of electric or hybrid automobile is a basic safety requirements.First, High-pressure system and vehicle chassis need to carry out electrical isolation, electrical isolation require the negative or positive electrode of high-pressure system with vehicle bottom The insulation of disk, only when above two insulation system breaks down, user can just be in dangerous situation..Secondly, battery case The metal that any circuit ingredient is not belonging in body and Battery case is also required to carry out electrical isolation, and this can pass through vehicle chassis Ground connection completes.

Insulation failure detection is a kind of basic safety protecting mechanism, and this insulation failure detection is in the set of cells runtime Between be carried out continuously, thus can detect in time in high-pressure system with insulation between electrical component and vehicle chassis etc. Level.Generally, insulation failure detection breaks down detecting the insulation between the negative or positive electrode of high-pressure system and vehicle chassis, That is, user took safety measures before dangerous situation, for example, directly remove high-voltage potential, or control device or battery Management system (BATTERY MANAGEMENT SYSTEM, BMS) closes battery, and the other parts of set of cells and vehicle are electric Isolate to avoid further electrical hazard.

The generation of insulation fault is likely due to there occurs insulation fault between set of cells and vehicle, it is also possible to due to electricity Insulation fault is there occurs inside the group of pond, the generation of built-in electrical insulation failure enters set of cells often caused by the extraneous air with dust It is interior, define condensed water afterwards to the cold.Traditional insulation failure detection is difficult to differentiate between the Crack cause of insulation fault, when insulating High voltage power supply is removed during failure or is cut off the electricity supply, high-voltage electrical apparatus element (traction motor as promoted vehicle) cannot restart, This will cause performance to decline immediately, and possibly even cause secondary dangerous situation due to losing motorized motions.

The content of the invention

In view of the above problems, it is proposed that the present invention, overcome the problems referred to above or solve at least in part to provide one kind The battery management system for vehicle of the problems referred to above, method and vehicle.

According to one aspect of the present invention, there is provided a kind of battery management system for vehicle, the vehicle includes electricity Pond group and the Battery case for set battery group, the system includes:System insulation fault detection module, connection control mould Block, built-in electrical insulation fault detection module and notification module.Wherein, the system insulation fault detection module is used in battery case After in vivo the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle, set of cells in Battery case is detected It is pre-conditioned whether the first insulation resistance between negative or positive electrode and vehicle chassis meets first.The link control module with The system insulation fault detection module and the built-in electrical insulation fault detection module are connected, for controlling electricity in Battery case The negative or positive electrode of pond group is connected with the binding post of the motor of vehicle/disconnects, and the link control module is described first Insulation resistance be unsatisfactory for first it is pre-conditioned when control the motor of negative or positive electrode and the vehicle of set of cells in Battery case Binding post disconnects.The built-in electrical insulation fault detection module is used for the negative or positive electrode and vehicle of the set of cells in Battery case Motor binding post disconnect after, detect Battery case in set of cells negative or positive electrode and the Battery case between The second insulation resistance whether to meet second pre-conditioned.The notification module connects with the built-in electrical insulation fault detection module Connect, for when second insulation resistance satisfaction second is pre-conditioned, producing and simultaneously sending exterior insulation failure message to vehicle; Second insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously send built-in electrical insulation failure message to vehicle.

Alternatively, the notification module is further configured to produce and sends after built-in electrical insulation failure message to vehicle, Notify that vehicle sends the control instruction for improving the temperature in the Battery case to the heating element heater in the Battery case, To reduce the condensate in the Battery case.

Alternatively, the built-in electrical insulation detection module is further configured to after the condensate in the battery case is reduced, Whether the 3rd insulation resistance in detection Battery case between the negative or positive electrode and the Battery case of set of cells meets second It is pre-conditioned.

The link control module is configured to when the 3rd insulation resistance satisfaction second is pre-conditioned, controls battery case The connection of the binding post of the motor of the negative or positive electrode of set of cells and vehicle in vivo;The notification module is further configured Be the 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce simultaneously to the fault management apparatus of vehicle send it is internal absolutely Edge failure message.

Alternatively, the notification module is further configured to produce and sends the Battery case built-in electrical insulation event to vehicle After the failure message of barrier, notify that vehicle is sent for being lowered into the battery to heating ventilation and air-conditioning control system The humidity of the gas in casing, or the control instruction of the temperature of the gas entered in the Battery case is improved, it is described to reduce Condensate in Battery case.

Alternatively, the built-in electrical insulation detection module is further configured to be examined after the condensate in the battery case is reduced It is pre- whether the 3rd insulation resistance in survey Battery case between the negative or positive electrode and the Battery case of set of cells meets second If condition.

The link control module is further configured to the 3rd insulation resistance is detected that to meet second pre-conditioned When, control the connection of the binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case;The notice mould Block be further configured to the 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously set to the fault management of vehicle Preparation send the failure message of the Battery case built-in electrical insulation failure.

Alternatively, the built-in electrical insulation fault detection module be further configured in Battery case the positive pole of set of cells or Before negative pole is connected with the binding post of the motor of vehicle, the negative or positive electrode and the electricity of set of cells in Battery case is detected It is pre-conditioned whether the 4th insulation resistance between the casing of pond meets second.

The link control module is further configured to when the 4th insulation resistance satisfaction second is pre-conditioned, connection The binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case;The notification module is further configured to The 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, to vehicle send built-in electrical insulation failure message.

According to another aspect of the present invention, a kind of hybrid vehicle or electric vehicle are additionally provided, its bag Include:The fault management apparatus of vehicle and battery management system as above, wherein the fault management apparatus of the vehicle are used In the failure message for receiving the battery management system transmission.

According to an additional aspect of the present invention, a kind of battery management method for vehicle is additionally provided.The vehicle bag Set of cells and the battery case for set battery group are included, methods described includes:Connection Battery case in set of cells positive pole or The binding post of the motor of negative pole and vehicle.The negative or positive electrode of set of cells and the motor of vehicle connects in Battery case After line terminals connection, detect that the first insulation resistance in Battery case between the negative or positive electrode and vehicle chassis of set of cells is No satisfaction first is pre-conditioned.First insulation resistance be unsatisfactory for first it is pre-conditioned when, disconnect Battery case in battery The negative or positive electrode of group is connected with the binding post of the motor of vehicle.The negative or positive electrode and car of set of cells in Battery case Motor binding post disconnect after, detect Battery case in set of cells negative or positive electrode and the Battery case it Between the second insulation resistance whether to meet second pre-conditioned.When second insulation resistance satisfaction second is pre-conditioned, produce Life simultaneously sends the failure message of the Battery case exterior insulation failure to vehicle;Second is unsatisfactory in second insulation resistance When pre-conditioned, produce and send the failure message of the Battery case built-in electrical insulation failure to vehicle.

Alternatively, methods described also includes:The Battery case built-in electrical insulation failure message is sent in generation and to vehicle Afterwards, notify that vehicle sends the control for improving the temperature in the Battery case to the heating element heater in the Battery case Instruction, to reduce the condensate in the Battery case.

Alternatively, methods described also includes:

Producing and to after the vehicle transmission Battery case built-in electrical insulation failure message, notifying vehicle to heating ventilation The electricity is entered with the humidity that air-conditioning control system sends the gas for being lowered in the Battery case, or raising The control instruction of the temperature of the gas in the casing of pond, to reduce the condensate in the Battery case.

Alternatively, methods described also includes:

After the condensate in the Battery case is reduced, the negative or positive electrode of set of cells and institute in Battery case are detected Stating the 3rd insulation resistance between Battery case, whether to meet second pre-conditioned.

When the 3rd insulation resistance satisfaction second is pre-conditioned, the negative or positive electrode of set of cells in Battery case is controlled With the connection of the binding post of the motor of vehicle;The 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce simultaneously The failure message of the Battery case built-in electrical insulation failure is sent to the fault management apparatus of vehicle.

Alternatively, methods described also includes:

Before the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle in the Battery case, detection electricity Whether the 4th insulation resistance in the casing of pond between the negative or positive electrode of set of cells and the Battery case meets second default article Part.

When the 4th insulation resistance satisfaction second is pre-conditioned, connect the negative or positive electrode of set of cells in Battery case With the binding post of the motor of vehicle;The 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and to vehicle Send the failure message of the Battery case built-in electrical insulation failure.

The invention provides the above-mentioned battery management system for vehicle, method and vehicle.It is of the invention Embodiment, once detecting insulation fault, can disconnect circuit and battery inside Battery case in vehicle during normal operation Casing external circuit connects.Then Battery case built-in electrical insulation resistance is checked.Will if Battery case built-in electrical insulation is resistor satisfied Ask, then can be determined that the insulation fault for detecting before is Battery case exterior insulation failure;If Battery case built-in electrical insulation Resistance is unsatisfactory for requiring, then to can be determined that and there is insulation fault inside at least Battery case.Due in an embodiment of the present invention It is Battery case exterior insulation failure or battery case that the insulation fault detected during normal operation in vehicle can be distinguished Internal portion insulation fault so that vehicle driver will appreciate that insulation fault Producing reason, and then can in time take reply Measure solves the insulation fault, improves vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

Further, when Battery case interior insulation failure during normal operation, is detected in vehicle, can carry out reducing electricity The process of the condensate in the casing of pond, so as to improve the insulation resistance between battery anode or negative pole and Battery case, repairs Battery case built-in electrical insulation failure, improves vehicle reliability of operation.

Further, after repairing telegram in reply pond box house insulation fault, battery anode or negative can also again be detected Whether pole meets the requirements with the insulation resistance of Battery case, when battery anode or negative pole meet with the insulation resistance of Battery case During requirement, can trigger and receive the instruction that the circuit inside Battery case is connected with Battery case external circuit so that battery case In vivo the circuit in portion is connected with Battery case external circuit, and that realizes set of cells restarts operation so that the high-voltage electrical apparatus unit of vehicle Part (such as the traction motor of vehicle) can be continued to run with.Avoid vehicle performance from declining, and avoid due to losing motorized motions And the generation of secondary dangerous situation may be caused.

Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of description, and in order to allow the above and other objects of the present invention, feature and advantage can Become apparent, below especially exemplified by the specific embodiment of the present invention.

Description of the drawings

By the detailed description for reading hereafter preferred implementation, various other advantages and benefit is common for this area Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as to the present invention Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings:

Fig. 1 schematically shows the block diagram of the battery management system for being used for vehicle according to an embodiment of the invention;

Fig. 2 schematically shows the circuit diagram of electric or hybrid automobile according to an embodiment of the invention;

Fig. 3 has schematically shown the circuit diagram for measuring insulation resistance according to an embodiment of the invention;

Fig. 4 schematically shows the flow chart of the battery management method for being used for vehicle according to an embodiment of the invention; And

Fig. 5 schematically show according to an embodiment of the invention be used for vehicle battery management method flow chart it Two.

Specific embodiment

The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here Limited.On the contrary, there is provided these embodiments are able to be best understood from the disclosure, and can be by the scope of the present disclosure Complete conveys to those skilled in the art.

Although it should be appreciated that those skilled in the art are not it is contemplated that being expressly recited in this manual or remembering But load realizes the present invention and the various structures being included in spirit of the invention, principle and scope.

The all examples and conditional language quoted from this specification are all in order at explanation and the purpose instructed, to help read Person understands the principle and concept that inventor makes contributions to prior art, and should be understood that and be not limited to these concrete citations Example and condition.

Additionally, quoting from all of the principle of the present invention, each side and each embodiment and its specific example in this specification Description and explanation are intended to cover equivalent in its structure and functionally or equivalent.In addition, such equivalent or equivalent Thing should include currently known and in the future exploitation equivalent or equivalent, i.e. not tubular construction how, be carried out it is identical The developmental achievement of function.

It should be appreciated by those skilled in the art that the block diagram presented in Figure of description represents the structure or electricity for realizing the present invention The schematic illustration on road.Similarly, it should be appreciated that the expression such as any flow chart presented in Figure of description actually can be by each The various process of computer or computing device are planted, but regardless of whether being explicitly shown such computer or process in figure Device.

In detail in the claims, the module for performing specified function is intended to perform any mode of the function, bag Include such as (a) perform the function component combination or (b) any type of software, therefore including firmware, microcode Etc., it is combined with proper circuit, for performing the software for realizing function.The function of being provided by various modules is by with claim The mode advocated is combined, thus it is believed that any module, part or the element of these functions can be provided all It is equivalent to the module limited in claim.

Term " embodiment " in description means that combining specific features, structure that the embodiment is described etc. is included In at least one embodiment of the present invention, therefore, the term " in embodiment " occurred everywhere in description is not necessarily all referring to Identical embodiment.

As shown in figure 1, the battery management system 100 for vehicle in embodiments in accordance with the present invention can be wrapped mainly Include:System insulation fault detection module 101, link control module 103, built-in electrical insulation fault detection module 105 and notice mould Block 107.It should be appreciated that the annexation of modules represented in Fig. 1 is merely illustrative, those skilled in the art completely can be with Using other annexations, as long as modules can also realize the function of the present invention under such annexation.

In this manual, the function of modules can be by using specialized hardware or can be with appropriate software Combine to perform the hardware of process to realize.Such hardware or specialized hardware can include special IC (ASIC), Various other circuits, various processors etc..When being realized by processor, the function can be by single application specific processor, single common Enjoy processor or multiple independent processors (some of which may be shared) to provide.In addition, processor should not be managed Solve to refer exclusively to be able to carry out the hardware of software, and can be to implicitly include and be not limited to digital signal processor (DSP) firmly Part, the read only memory (ROM) for storing software, random access memory (RAM) and non-volatile memory apparatus.

In an embodiment of the present invention, system insulation fault detection module 101 is used for that set of cells to be just in Battery case After pole or negative pole are connected with the binding post of the motor of vehicle, the negative or positive electrode and car of set of cells in Battery case is detected It is pre-conditioned whether the first insulation resistance between chassis meets first.

As shown in Fig. 2 for the circuit diagram of electric or hybrid automobile, the wherein set of cells in Battery case 201 The electric current of 203 outputs can be delivered to motor 209 after the change of current of inverter 207.Specifically, catalyst 205 is in closure State when, the negative or positive electrode of the set of cells 203 in Battery case 201 can be by outside catalyst 205 and Battery case 201 Motor 209 binding post connection.

Alternatively, in an embodiment of the present invention, whether the first insulation resistance meets first and pre-conditioned may refer to One insulation resistance should be greater than default first insulation resistance threshold value.In an embodiment of the present invention, the first insulation set in advance The value of resistance threshold can set in the following manner:The international standard regulation of electric automobile:Insulating resistance value is divided by electronic Automobile straight-flow system nominal voltage U, as a result should be greater than 100 Ω/V, just meet safe requirement.Therefore, in the enforcement of the present invention In example, above-mentioned first insulation resistance threshold value set in advance can be set according to the regulation of the international standard of above-mentioned electric automobile It is fixed, i.e.,:(insulation resistance threshold value set in advance/electric automobile straight-flow system nominal voltage U) 100 Ω of >/V.It is of course possible to manage Solution, does not limit in an embodiment of the present invention the concrete value of the first insulation resistance threshold value set in advance.

In an embodiment of the present invention, system insulation fault detection module 101 can adopt insulation resistance as shown in Figure 3 to survey The first insulating resistance value in amount circuit measuring Battery case between the negative or positive electrode and vehicle chassis of set of cells.It is of course possible to It is understood by, system insulation fault detection module 101 is not limited in an embodiment of the present invention and measures battery in Battery case The concrete mode of the first insulating resistance value between the negative or positive electrode and vehicle chassis of group.

Referring to Fig. 3, it is assumed that the straight-flow system voltage of electric automobile (Electric Vehicle) or hybrid vehicle is (i.e. Electrokinetic cell voltage) it is U, the positive pole of electrokinetic cell to be measured, the insulation resistance between negative pole and vehicle chassis are respectively RP、RN, Voltage between positive pole, negative pole and vehicle chassis is respectively UP、UN, then the dotted line frame of the equivalent model of straight-flow system to be measured such as Fig. 3 Shown in interior.

Measuring principle is as shown in figure 3, R in figureC1、RC2For the measuring resistance of measuring known resistance.Operation principle is such as Under:

When switching S1, S2 and being all off, the positive pole of electrokinetic cell, the voltage difference between negative pole and Battery case are measured For UPO、UNO, can be obtained by circuital law:

When switch S1 closures, when S2 disconnects, then standard bias electricity is added between the positive pole and Battery case of electrokinetic cell Resistance RC1, measure the positive pole of electrokinetic cell, the voltage between negative pole and Battery case and be respectively UPP、UNP, equally can obtain:

Can be obtained by above-mentioned formula (1), the solution of formula (2) joint

Equally, insulation resistance can also be obtained in following two situations:

(1) S1, S2 are all off and S1 disconnects, S2 is closed;

(2) S1 closures, S2 disconnect and S1 disconnects, S2 is closed.

Insulation resistance is similar to the above in both the above situation metering system, and here is no longer applied and stated.

In an embodiment of the present invention, link control module 103 and system insulation fault detection module 101 and built-in electrical insulation Fault detection module 105 is connected, for controlling connecing for the negative or positive electrode of set of cells and the motor of vehicle in Battery case Line terminals connection/disconnect;Link control module 103 the first insulation resistance be unsatisfactory for first it is pre-conditioned when control Battery case The negative or positive electrode of interior set of cells disconnects with the binding post of the motor of vehicle.

In an embodiment of the present invention, built-in electrical insulation fault detection module 105 is used for that set of cells to be just in Battery case After pole or negative pole disconnect with the binding post of the motor of vehicle, the negative or positive electrode of set of cells and institute in Battery case are detected Stating the second insulation resistance between Battery case, whether to meet second pre-conditioned.

Alternatively, in an embodiment of the present invention, whether the second insulation resistance meets second and pre-conditioned may refer to Two insulation resistances should be greater than default second insulation resistance threshold value.In an embodiment of the present invention, the second insulation set in advance The value of resistance threshold can set in the following manner:The international standard regulation of electric automobile:Insulating resistance value is divided by electronic Automobile straight-flow system nominal voltage U, as a result should be greater than 100 Ω/V, just meet safe requirement.Therefore, in the enforcement of the present invention In example, above-mentioned second insulation resistance threshold value set in advance can be set according to the regulation of the international standard of above-mentioned electric automobile It is fixed, i.e.,:(insulation resistance threshold value set in advance/electric automobile straight-flow system nominal voltage U) 100 Ω of >/V.It is of course possible to manage Solution, does not limit in an embodiment of the present invention the concrete value of the second insulation resistance threshold value set in advance.

In an embodiment of the present invention, built-in electrical insulation fault detection module 105 can adopt insulation resistance as shown in Figure 3 to survey The second insulating resistance value in amount circuit measuring Battery case between the negative or positive electrode and Battery case of set of cells.It is of course possible to It is understood by, built-in electrical insulation fault detection module 105 is not limited in an embodiment of the present invention and measures battery in Battery case The concrete mode of the second insulating resistance value between the negative or positive electrode and Battery case of group.

In an embodiment of the present invention, notification module 107 is connected with built-in electrical insulation fault detection module 105, for When two insulation resistances satisfaction second is pre-conditioned, produces and simultaneously send exterior insulation to vehicle (such as the fault management apparatus of vehicle) Failure message;The second insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and to vehicle, (fault management of such as vehicle sets It is standby) send built-in electrical insulation failure message.

Alternatively, Battery case exterior insulation failure is referred in Battery case and existed between negative or positive electrode and vehicle chassis Conductive path, causes the insulation resistance in Battery case between negative or positive electrode and vehicle chassis to reduce.The exterior insulation failure Message can be used for pointing out the driver of vehicle to take correspondingly measure to solve the problems, such as that insulation resistance is reduced.

Alternatively, Battery case built-in electrical insulation failure is referred in Battery case and existed between negative or positive electrode and Battery case Conductive path (such as because of the conductive path of the condensate formation in Battery case), causes negative or positive electrode and electricity in Battery case Insulation resistance between the casing of pond is reduced.The built-in electrical insulation failure message can be used for pointing out the driver of vehicle to take correspondingly Measure removes the condensate in Battery case, to improve the insulated electro in Battery case between negative or positive electrode and Battery case Resistance.

In the prior art, in vehicle during normal operation (catalyst closure), when insulation fault is detected, due to electricity The circuit of pond box house is electrically connected with the circuit outside Battery case, causes BMS (battery management system) cannot be distinguished by The insulation fault is built-in electrical insulation failure or exterior insulation failure.

And in an embodiment of the present invention, separation detection Battery case built-in electrical insulation failure and exterior insulation event can be caused Barrier so that built-in electrical insulation failure or exterior insulation failure when BMS can distinguish the insulation fault for detecting.Specifically, in car During normal operation, once detecting insulation fault, catalyst is opened, outside the circuit inside Battery case and Battery case Circuit is disconnected.Then Battery case built-in electrical insulation resistance can individually be checked.If Battery case built-in electrical insulation resistance Meet and require, then the insulation fault detected before illustrating is Battery case exterior insulation failure;If Battery case inside is absolutely Edge resistance is unsatisfactory for requiring that the insulation fault detected before then illustrating at least includes Battery case built-in electrical insulation failure.Due to Connecing in the Battery case negative or positive electrode of set of cells and the motor of vehicle can be distinguished in an embodiment of the present invention The insulation fault that detects is Battery case exterior insulation failure or Battery case built-in electrical insulation failure after line terminals connection, Allow users to understand insulation fault Producing reason, and then can in time take counter-measure to solve the insulation fault, carry High vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

Alternatively, in an embodiment of the present invention, if subsequently detecting Battery case built-in electrical insulation failure, can be to car The control instruction for removing condensate in Battery case is sent, to solve Battery case built-in electrical insulation failure, for example, improved described Temperature in Battery case, is also not limited to this certainly.

Specifically, in an embodiment of the present invention, notification module 107 can be further configured to produce and to vehicle (example As vehicle fault management apparatus) send built-in electrical insulation failure message after, notify vehicle to the heating element heater in Battery case The control instruction for improving the temperature in Battery case is sent, to reduce the condensate in Battery case.

Alternatively, in an embodiment of the present invention, in order to avoid because of the negative or positive electrode and car of set of cells in Battery case The binding post of motor disconnect, cause high-voltage electrical apparatus element (traction motor as the promoted vehicle) nothing of vehicle Method is continued to run with, and then causes vehicle performance to decline, and may cause secondary dangerous situation due to losing motorized motions Occur.Insulation resistance in the Battery case between the negative or positive electrode and Battery case of set of cells disclosure satisfy that when requiring, can To restart set of cells operation.

Specifically, in an embodiment of the present invention, built-in electrical insulation detection module 105 is further configured to reducing battery case After interior condensate, whether the 3rd insulation resistance in detection Battery case between the negative or positive electrode and Battery case of set of cells Meet second pre-conditioned;Link control module 103 is configured to when the 3rd insulation resistance satisfaction second is pre-conditioned, control electricity The connection of the binding post of the motor of the negative or positive electrode of set of cells and vehicle in the casing of pond;Notification module 107 further by Be configured to the 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce simultaneously to the fault management apparatus of vehicle send it is internal absolutely Edge failure message.

Alternatively, in an embodiment of the present invention, if subsequently detecting Battery case built-in electrical insulation failure, can be to car Send remove Battery case in condensate control instruction, to solve Battery case built-in electrical insulation failure, for example, be lowered into The humidity of the gas in the Battery case, is also not limited to this certainly.

Specifically, in an embodiment of the present invention, notification module 107 can also be further configured to produce and send out to vehicle After sending the failure message of the Battery case built-in electrical insulation failure, notify vehicle to heating ventilation and air-conditioning control system (Heating Ventilation and Air Conditioning, HVAC) is sent for being lowered in the Battery case Gas humidity, or the control instruction of temperature into the gas in the Battery case is improved, to reduce the battery case Internal condensate.

Alternatively, in an embodiment of the present invention, built-in electrical insulation detection module 105 can also be further configured to reducing The in Battery case between the negative or positive electrode and the Battery case of set of cells is detected after condensate in the battery case It is pre-conditioned whether three insulation resistances meet second;

The link control module 103 is further configured to detecting default article of the 3rd insulation resistance satisfaction second During part, the connection of the binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case is controlled;The notice Module 107 be further configured to the 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and to the failure of vehicle Management equipment sends the failure message of the Battery case built-in electrical insulation failure.

In a preferred embodiment, notification module 107 is further connected with system insulation fault detection module 101, Detect the 3rd insulation resistance meet second it is pre-conditioned when, set of cells in the control Battery case of link control module 103 The connection of the binding post of the motor of negative or positive electrode and vehicle, further detection is electric for system insulation fault detection module 101 Whether the insulation resistance in the casing of pond between the negative or positive electrode and vehicle chassis of set of cells meets first pre-conditioned, if not Meet, notification module is produced and sends exterior insulation failure message to vehicle.

Alternatively, in an embodiment of the present invention, set of cells in Battery case can be judged before set of cells is run Whether the insulation resistance between negative or positive electrode and Battery case meets requirement, when satisfaction is required so that battery in Battery case The negative or positive electrode of group is connected with the binding post of the motor of vehicle;When being unsatisfactory for requiring, failure can be sent to vehicle and disappeared Breath, improves vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

Specifically, in an embodiment of the present invention, built-in electrical insulation fault detection module 105 can be further configured in electricity Before the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle in the casing of pond, battery in detection Battery case It is pre-conditioned whether the 4th insulation resistance between the negative or positive electrode and the Battery case of group meets second;

Link control module 103 can be further configured to when the 4th insulation resistance satisfaction second is pre-conditioned, connection The binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case;Notification module 107 can further match somebody with somebody Be set to the 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, to vehicle send built-in electrical insulation failure message.

According to another aspect of the present invention, a kind of hybrid vehicle or electric vehicle are additionally provided, its bag Include:The fault management apparatus of vehicle and battery management system as above, the wherein fault management apparatus of vehicle are used to connect Receive the failure message that battery management system sends.Embodiments of the invention, in vehicle during normal operation, once detect insulation Failure, can disconnect the circuit inside Battery case and be connected with Battery case external circuit.Then Battery case inside is checked absolutely Edge resistance.If the resistor satisfied requirement of Battery case built-in electrical insulation, the insulation fault detected before illustrating is Battery case Exterior insulation failure;If Battery case built-in electrical insulation resistance is unsatisfactory for requiring that the insulation fault detected before illustrating is Battery case built-in electrical insulation failure.Detected during normal operation in vehicle due to distinguishing in an embodiment of the present invention Insulation fault be Battery case exterior insulation failure or Battery case built-in electrical insulation failure so that vehicle driver can be much of that Solution insulation fault Producing reason, and then can in time take counter-measure to solve the insulation fault, improve vehicle operation Reliability, it is ensured that the safety of vehicle driver and passenger.

According to the third aspect of the invention we, with battery management system 100 according to an embodiment of the invention as above It is corresponding, present invention also offers a kind of battery management method 400.

As shown in figure 4, one of flow chart of battery management method for vehicle for embodiments of the invention, the vehicle Including set of cells and the battery case for set battery group, the battery management method 400 includes:

The binding post of the motor of the negative or positive electrode and vehicle of set of cells in step S401, connection Battery case.

As shown in Fig. 2 for the circuit diagram of electric or hybrid automobile, the wherein set of cells in Battery case 201 The electric current of 203 outputs can be delivered to motor 209 after the change of current of inverter 207.Specifically, catalyst 205 is in closure State when, the negative or positive electrode of the set of cells 203 in Battery case 201 can be by outside catalyst 205 and Battery case 201 Motor 209 binding post connection.

Step S403, the negative or positive electrode of set of cells is connected it with the binding post of the motor of vehicle in Battery case Afterwards, detect whether the first insulation resistance in Battery case between the negative or positive electrode and vehicle chassis of set of cells meets first pre- If condition.

Alternatively, in an embodiment of the present invention, whether the first insulation resistance meets first and pre-conditioned may refer to One insulation resistance should be greater than default first insulation resistance threshold value.In an embodiment of the present invention, the first insulation set in advance The value of resistance threshold can set in the following manner:The international standard regulation of electric automobile:Insulating resistance value is divided by electronic Automobile straight-flow system nominal voltage U, as a result should be greater than 100 Ω/V, just meet safe requirement.Therefore, in the enforcement of the present invention In example, above-mentioned first insulation resistance threshold value set in advance can be set according to the regulation of the international standard of above-mentioned electric automobile It is fixed, i.e.,:(insulation resistance threshold value set in advance/electric automobile straight-flow system nominal voltage U) 100 Ω of >/V.It is of course possible to manage Solution, does not limit in an embodiment of the present invention the concrete value of the first insulation resistance threshold value set in advance.

In an embodiment of the present invention, electricity in insulation resistance measurement circuit measurement Battery case as shown in Figure 3 can be adopted The first insulating resistance value between the negative or positive electrode and vehicle chassis of pond group.Of course, it should be understood that in the reality of the present invention Apply and the first insulating resistance value measured in Battery case between the negative or positive electrode and vehicle chassis of set of cells is limited in example Concrete mode.

Referring to Fig. 3, it is assumed that the straight-flow system voltage (i.e. electrokinetic cell voltage) of electric automobile (Electric Vehicle) For U, the positive pole of electrokinetic cell to be measured, the insulation resistance between negative pole and vehicle chassis are respectively RP、RN, positive pole, negative pole and car Voltage between chassis is respectively UP、UN, then the equivalent model of straight-flow system to be measured is as shown in the dotted line inframe of Fig. 3.

Measuring principle is as shown in figure 3, R in figureC1、RC2For the measuring resistance of measuring known resistance.Operation principle is such as Under:

When switching S1, S2 and being all off, the positive pole of electrokinetic cell, the voltage difference between negative pole and Battery case are measured For UPO、UNO, can be obtained by circuital law:

When switch S1 closures, when S2 disconnects, then standard bias electricity is added between the positive pole and Battery case of electrokinetic cell Resistance RC1, measure the positive pole of electrokinetic cell, the voltage between negative pole and Battery case and be respectively UPP、UNP, equally can obtain:

Can be obtained by above-mentioned formula (1), the solution of formula (2) joint

Equally, insulation resistance can also be obtained in following two situations:

(1) S1, S2 are all off and S1 disconnects, S2 is closed;

(2) S1 closures, S2 disconnect and S1 disconnects, S2 is closed.

Insulation resistance is similar to the above in both the above situation metering system, and here is no longer applied and stated.

Step S405, the first insulation resistance be unsatisfactory for first it is pre-conditioned when, disconnect Battery case in set of cells just Pole or negative pole are connected with the binding post of the motor of vehicle.

Specifically, vehicle can be notified to produce and sends the order of unlatching catalyst 205, to disconnect in Battery case 201 The negative or positive electrode of set of cells 203 is connected with the binding post of the motor 209 of vehicle.

Step S407, the binding post of the motor of the negative or positive electrode of set of cells and vehicle disconnects it in Battery case Afterwards, detect whether the second insulation resistance in Battery case between the negative or positive electrode and the Battery case of set of cells meets the Two is pre-conditioned;

Alternatively, in an embodiment of the present invention, whether the second insulation resistance meets second and pre-conditioned may refer to Two insulation resistances should be greater than default second insulation resistance threshold value.In an embodiment of the present invention, the second insulation set in advance The value of resistance threshold can set in the following manner:The international standard regulation of electric automobile:Insulating resistance value is divided by electronic Automobile straight-flow system nominal voltage U, as a result should be greater than 100 Ω/V, just meet safe requirement.Therefore, in the enforcement of the present invention In example, above-mentioned second insulation resistance threshold value set in advance can be set according to the regulation of the international standard of above-mentioned electric automobile It is fixed, i.e.,:(insulation resistance threshold value set in advance/electric automobile straight-flow system nominal voltage U) 100 Ω of >/V.It is of course possible to manage Solution, does not limit in an embodiment of the present invention the concrete value of the second insulation resistance threshold value set in advance.

In an embodiment of the present invention, electricity in insulation resistance measurement circuit measurement Battery case as shown in Figure 3 can be adopted The second insulating resistance value between the negative or positive electrode and Battery case of pond group.Of course, it should be understood that in the reality of the present invention Apply and the second insulating resistance value measured in Battery case between the negative or positive electrode and Battery case of set of cells is limited in example Concrete mode.

Step S409, the second insulation resistance meet second it is pre-conditioned when, produce and simultaneously send outside Battery case to vehicle The failure message of portion's insulation fault;The second insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously send described to vehicle The failure message of Battery case built-in electrical insulation failure.

Alternatively, Battery case exterior insulation failure is referred in Battery case and existed between negative or positive electrode and vehicle chassis Conductive path, causes the insulation resistance in Battery case between negative or positive electrode and vehicle chassis to reduce.The failure message can be with Driver for pointing out vehicle takes correspondingly measure to solve the problems, such as that insulation resistance is reduced.

Alternatively, Battery case built-in electrical insulation failure is referred in Battery case and existed between negative or positive electrode and Battery case Conductive path (such as because of the conductive path of the condensate formation in Battery case), causes negative or positive electrode and electricity in Battery case Insulation resistance between the casing of pond is reduced.The failure message can be used for pointing out the driver of vehicle to take correspondingly measure to remove Condensate in Battery case, to improve the insulation resistance in Battery case between negative or positive electrode and Battery case.

In the prior art, in vehicle during normal operation (catalyst closure), when insulation fault is detected, due to electricity The circuit of pond box house is electrically connected with the circuit outside Battery case, causes BMS (battery management system) cannot be distinguished by It is built-in electrical insulation failure or exterior insulation failure to the insulation fault.

And in an embodiment of the present invention, separation detection Battery case built-in electrical insulation failure and exterior insulation event can be caused Barrier so that built-in electrical insulation failure or exterior insulation failure when can distinguish the insulation fault for detecting.Specifically, in vehicle just Normal run duration, once detecting insulation fault, catalyst is opened, the circuit inside Battery case and Battery case external circuit Disconnect.Then Battery case built-in electrical insulation resistance can individually be checked.If Battery case built-in electrical insulation is resistor satisfied Require, then the insulation fault detected before illustrating is Battery case exterior insulation failure;If Battery case built-in electrical insulation is electric Resistance is unsatisfactory for requiring that the insulation fault detected before then illustrating at least includes Battery case built-in electrical insulation failure.Due at this The terminals of the motor of the negative or positive electrode of set of cells and vehicle in Battery case can be distinguished in inventive embodiment The insulation fault detected after son connection is Battery case exterior insulation failure or Battery case built-in electrical insulation failure so that User will appreciate that insulation fault Producing reason, and then can in time take counter-measure to solve the insulation fault, improve Vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

Alternatively, in an embodiment of the present invention, if subsequently detecting Battery case built-in electrical insulation failure, can be to car The control instruction for removing condensate in Battery case is sent, to solve Battery case built-in electrical insulation failure, for example, improved described The humidity of temperature in Battery case, the gas being lowered in the Battery case, or improve and enter in the Battery case Gas temperature, this is also not limited to certainly.

Alternatively, in an embodiment of the present invention, after step S409, methods described 400 also includes:

Producing and to after the vehicle transmission Battery case built-in electrical insulation failure message, notifying vehicle to the battery Heating element heater in casing sends the control instruction for improving the temperature in the Battery case, to reduce the Battery case Interior condensate.

Alternatively, in an embodiment of the present invention, after step S409, method 400 also includes:

Producing and to after the vehicle transmission Battery case built-in electrical insulation failure message, notifying vehicle to heating ventilation Send for reducing with air-conditioning control system (Heating Ventilation and Air Conditioning, HVAC) Into the humidity of the gas in the Battery case, or the control improved into the temperature of the gas in the Battery case refers to Order, to reduce the condensate in the Battery case.

In an embodiment of the present invention, by sending the control instruction for reducing the condensate in Battery case to vehicle, from And realize removing the condensate in Battery case, to guarantee the negative or positive electrode of set of cells and the Battery case in Battery case Between insulation resistance meet require, improve vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

In order to avoid connecting because the binding post of the negative or positive electrode of set of cells in Battery case and the motor of vehicle disconnects Connect, causing the high-voltage electrical apparatus element (traction motor as promoted vehicle) of vehicle cannot continue to run with, and then cause vehicle Can decline, and the generation that secondary dangerous situation may be caused due to losing motorized motions.Alternatively, in the enforcement of the present invention In example, the insulation resistance in the Battery case between the negative or positive electrode and Battery case of set of cells disclosure satisfy that when requiring, can To restart set of cells operation.

Specifically, in an embodiment of the present invention, method 400 also includes:

After the condensate in the Battery case is reduced, the negative or positive electrode of set of cells and institute in Battery case are detected Stating the 3rd insulation resistance between Battery case, whether to meet second pre-conditioned;

When the 3rd insulation resistance satisfaction second is pre-conditioned, the negative or positive electrode of set of cells in Battery case is controlled With the connection of the binding post of the motor of vehicle;The 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce simultaneously The failure message of the Battery case built-in electrical insulation failure is sent to the fault management apparatus of vehicle.

In an embodiment of the present invention, can before set of cells is run, judge in Battery case the positive pole of set of cells or Whether the insulation resistance between negative pole and Battery case meets requirement, when satisfaction is required so that set of cells is being just in Battery case Pole or negative pole are connected with the binding post of the motor of vehicle;When being unsatisfactory for requiring, failure message can be sent to vehicle, be improved Vehicle reliability of operation, it is ensured that the safety of vehicle driver and passenger.

Alternatively, in an embodiment of the present invention, method 400 also includes:

Before the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle in the Battery case, detection electricity Whether the 4th insulation resistance in the casing of pond between the negative or positive electrode of set of cells and the Battery case meets second default article Part;

When the 4th insulation resistance satisfaction second is pre-conditioned, connect the negative or positive electrode of set of cells in Battery case With the binding post of the motor of vehicle;The 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and to vehicle Send the failure message of the Battery case built-in electrical insulation failure.

In a preferred embodiment, detect the 3rd insulation resistance meet second it is pre-conditioned when, connection control The binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case;Further detect battery in Battery case Whether the insulation resistance between the negative or positive electrode and vehicle chassis of group meets first pre-conditioned, if be unsatisfactory for, produces simultaneously Exterior insulation failure message is sent to vehicle.

As shown in figure 5, two of the flow chart for the cell tube for vehicle of embodiments of the invention.

Step S501, reception battery operation request, carry out BMS initialization;

Step S503, execution Battery case built-in electrical insulation resistance detection;

In an embodiment of the present invention, electricity in insulation resistance measurement circuit measurement Battery case as shown in Figure 3 can be adopted Insulating resistance value between the negative or positive electrode and Battery case of pond group.Of course, it should be understood that in embodiments of the invention In limit measurement Battery case in set of cells negative or positive electrode and vehicle tank between insulating resistance value concrete side Formula.

Step S505, judge whether Battery case built-in electrical insulation resistance meets the requirements, if it is, into step S509;It is no Then, into step S507;

Step S507, to vehicle report Battery case built-in electrical insulation failure;

Step S509, reception catalyst close request, subsequently into step S511;

Step S511, closure catalyst, subsequently into step S513;

Step S513, alternatively referred to as execution Battery case exterior insulation resistance, detecting system insulation resistance;

Step S515, judge whether Battery case exterior insulation resistance meets the requirements, if so, normally run, and return step Rapid S513;Otherwise enter step S517;

Step S517, report Battery case exterior insulation resistance are undesirable, subsequently into step S519;

Step S519, unlatching catalyst, that is, disconnect the company between Battery case internal circuit and Battery case external circuit Connect.

Step S521, execution Battery case built-in electrical insulation resistance detection;

In an embodiment of the present invention, electricity in insulation resistance measurement circuit measurement Battery case as shown in Figure 3 can be adopted Insulating resistance value between the negative or positive electrode and Battery case of pond group.Of course, it should be understood that in embodiments of the invention In limit measurement Battery case in set of cells negative or positive electrode and vehicle tank between insulating resistance value concrete side Formula.

Step S523, judge whether Battery case built-in electrical insulation resistance meets the requirements, if so, into step S525;Otherwise, Into step S527;

Step S525, report Battery case exterior insulation failure;

Step S527, report Battery case built-in electrical insulation failure, subsequently into step S529;

Condensed water in step S529, removing Battery case, subsequently into step S531;

Step S531, execution Battery case built-in electrical insulation resistance detection.

In an embodiment of the present invention, electricity in insulation resistance measurement circuit measurement Battery case as shown in Figure 3 can be adopted Insulating resistance value between the negative or positive electrode and Battery case of pond group.Of course, it should be understood that in embodiments of the invention In limit measurement Battery case in set of cells negative or positive electrode and vehicle tank between insulating resistance value concrete side Formula.

Step S533, judge whether Battery case built-in electrical insulation resistance meets the requirements, if so, execution step S537;Otherwise, Into step S535;

Step S535, report Battery case built-in electrical insulation fault clearance, are then back to step S509, realize that battery is restarted.

Step S537, to vehicle report Battery case built-in electrical insulation failure, be then back to step S531.

Because above-mentioned each method embodiment is corresponding with aforementioned each device embodiment, therefore no longer each method embodiment is entered Row is described in detail.

In this manual, substantial amounts of detail is illustrated.It will be appreciated, however, that embodiments of the invention can be Implement without in the case of these details.In certain embodiments, known method, structure and skill is not been shown in detail Art, so as not to make reader obscure the understanding of the principle to this specification.

It will be understood by those skilled in the art that can adaptively be changed to the module in the device in each embodiment Become, and they are arranged in one or more devices different from the embodiment.Can be some modules in embodiment A module or unit or component are combined into, multiple submodule or subelement or sub-component can also be divided into.Except spy Levy or process outside mutually exclusive situation, any combinations can be adopted, to all of any method disclosed in this specification All modules of step or any device are combined.Unless expressly stated otherwise, each feature disclosed in this specification Can be replaced by identical, equivalent or similar purpose alternative features are provided.

The present invention each device embodiment can be realized with hardware, or with one or more processor operation Software module realize, or with combinations thereof realization.It will be understood by those of skill in the art that can use in practice Microprocessor or digital signal processor (DSP) to realize device according to embodiments of the present invention in some or all moulds The some or all functions of block.The present invention is also implemented as the program of device (example for performing method as described herein Such as, computer program and computer program).

It should be noted that above-described embodiment the present invention will be described rather than limits the invention, and this area Technical staff can design various alternate embodiments in the case of without departing from scope of the following claims.In claim In book, the sequence of feature is not meant to any particular order of feature, and especially, each step in claim to a method Order is not meant to that these steps must sequentially be performed according to this.On the contrary, these steps can be with any appropriate suitable Sequence is performed.Equally, the order that each module execution is processed in device claim also should not be sorted by each module in claim Limit, and can be to perform process in any suitable order.In detail in the claims, should not be by any ginseng in bracket Examine labelling and be understood as limitations on claims.Term " including " or "comprising" do not exclude the presence of mould not listed in the claims Block or step.Term "a" or "an" before module or step does not exclude the presence of multiple such modules or step. The present invention can come real by means of the hardware including some disparate modules or by means of properly programmed computer or processor It is existing.In the device claim enumerating several means, some items in these modules can be by same hardware module To realize.The use of term " first ", " second " and " the 3rd " etc. does not indicate that any order, can be construed to these terms Title.Term " connection ", " coupling " etc. are defined as operationally being connected in any desired form when using in this manual Connect, for example, mechanically, electronically, digitally, simulation ground, directly, indirectly, by software, by modes such as hardware carry out Connection.

Claims (12)

1. a kind of battery management system for vehicle, the vehicle includes set of cells and the battery case for set battery group Body, it is characterised in that the system includes:System insulation fault detection module, link control module, built-in electrical insulation fault detect Module and notification module;Wherein,
The system insulation fault detection module is used for the motor of the negative or positive electrode of set of cells and vehicle in Battery case Binding post connection after, detect Battery case in set of cells negative or positive electrode and vehicle chassis between the first insulated electro It is pre-conditioned whether resistance meets first;
The link control module is connected with the system insulation fault detection module and the built-in electrical insulation fault detection module Connect, be connected with the binding post of the motor of vehicle/disconnect for controlling the negative or positive electrode of set of cells in Battery case;It is described Link control module first insulation resistance be unsatisfactory for first it is pre-conditioned when control Battery case in set of cells positive pole Or negative pole disconnects with the binding post of the motor of vehicle;
The built-in electrical insulation fault detection module is used for the motor of the negative or positive electrode of set of cells and vehicle in Battery case Binding post disconnect after, detect second exhausted between the negative or positive electrode and the Battery case of set of cells in Battery case It is pre-conditioned whether edge resistance meets second;
The notification module is connected with the built-in electrical insulation fault detection module, for meeting second in second insulation resistance When pre-conditioned, produce and send exterior insulation failure message to vehicle;Second is unsatisfactory in second insulation resistance to preset During condition, produce and send built-in electrical insulation failure message to vehicle.
2. system according to claim 1, it is characterised in that:
The notification module is further configured to produce and sends after built-in electrical insulation failure message to vehicle, notifies vehicle to institute State the heating element heater in Battery case and send control instruction for improving the temperature in the Battery case, to reduce the electricity Condensate in the casing of pond.
3. system according to claim 2, it is characterised in that:
The built-in electrical insulation fault detection module is further configured to after the condensate in the Battery case is reduced, detection electricity Whether the 3rd insulation resistance in the casing of pond between the negative or positive electrode of set of cells and the Battery case meets second default article Part;
The link control module is configured to when the 3rd insulation resistance satisfaction second is pre-conditioned, in control Battery case The connection of the binding post of the negative or positive electrode of set of cells and the motor of vehicle;The notification module is configured to 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce simultaneously send built-in electrical insulation to the fault management apparatus of vehicle therefore Barrier message.
4. system according to claim 1, it is characterised in that:
The notification module is further configured to produce and sends after the Battery case built-in electrical insulation failure message to vehicle, Notify that vehicle sends the wet of the gas for being lowered in the Battery case to heating ventilation and air-conditioning control system Degree, or the control instruction of the temperature of the gas entered in the Battery case is improved, to reduce the condensation in the Battery case Water.
5. system according to claim 4, it is characterised in that:
The built-in electrical insulation fault detection module is further configured to the detection electricity after the condensate in the Battery case is reduced Whether the 3rd insulation resistance in the casing of pond between the negative or positive electrode of set of cells and the Battery case meets second default article Part;
The link control module be further configured to detect the 3rd insulation resistance meet second it is pre-conditioned when, control The connection of the binding post of the motor of the negative or positive electrode of set of cells and vehicle in Battery case processed;The notification module enters one Step be configured to the 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously send to the fault management apparatus of vehicle The Battery case built-in electrical insulation failure message.
6. system according to claim 1, it is characterised in that:
The built-in electrical insulation fault detection module is further configured to the negative or positive electrode and vehicle of the set of cells in Battery case Motor binding post connection before, detect Battery case in set of cells negative or positive electrode and the Battery case between The 4th insulation resistance whether to meet second pre-conditioned;
The link control module is further configured to when the 4th insulation resistance satisfaction second is pre-conditioned, connects battery The binding post of the motor of the negative or positive electrode of set of cells and vehicle in casing;The notification module is further configured in institute State the 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, to vehicle send built-in electrical insulation failure message.
7. a kind of hybrid vehicle or electric vehicle, it includes:The fault management apparatus of vehicle and as right will The battery management system described in any one of 1 to 6 is sought, wherein the fault management apparatus of the vehicle are used to receive the battery The failure message that management system sends.
8. a kind of battery management method for vehicle, the vehicle includes set of cells and the battery case for set battery group Body, it is characterised in that methods described includes:
The binding post of the motor of the negative or positive electrode and vehicle of set of cells in connection Battery case;
After the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle in the Battery case, battery case is detected It is pre-conditioned whether the first insulation resistance between the negative or positive electrode and vehicle chassis of internal set of cells meets first;
First insulation resistance be unsatisfactory for first it is pre-conditioned when, disconnect Battery case in set of cells negative or positive electrode with The binding post connection of the motor of vehicle;
After the negative or positive electrode of set of cells disconnects with the binding post of the motor of vehicle in the Battery case, battery case is detected It is pre-conditioned whether the second insulation resistance between the negative or positive electrode and the Battery case of internal set of cells meets second;
When second insulation resistance satisfaction second is pre-conditioned, produces and simultaneously send the Battery case exterior insulation to vehicle Failure message;Second insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously send the Battery case to vehicle Built-in electrical insulation failure message.
9. method according to claim 8, it is characterised in that methods described also includes:
Producing and to after the vehicle transmission Battery case built-in electrical insulation failure message, notifying vehicle to the Battery case Interior heating element heater sends the control instruction for improving the temperature in the Battery case, to reduce in the Battery case Condensate.
10. method according to claim 8, it is characterised in that methods described also includes:
Producing and to after the vehicle transmission Battery case built-in electrical insulation failure message, notifying vehicle to heating ventilation and sky Gas regulation and control system sends the humidity of the gas for being lowered in the Battery case, or improves into the battery case The control instruction of the temperature of internal gas, to reduce the condensate in the Battery case.
11. methods according to claim 9 or 10, it is characterised in that methods described also includes:
After the condensate in the Battery case is reduced, the negative or positive electrode and the electricity of set of cells in Battery case is detected It is pre-conditioned whether the 3rd insulation resistance between the casing of pond meets second;
When the 3rd insulation resistance satisfaction second is pre-conditioned, the negative or positive electrode and car of set of cells in Battery case are controlled Motor binding post connection;The 3rd insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and to car Fault management apparatus send the Battery case built-in electrical insulation failure message.
12. methods according to claim 8, it is characterised in that methods described also includes:
Before the negative or positive electrode of set of cells is connected with the binding post of the motor of vehicle in the Battery case, battery case is detected It is pre-conditioned whether the 4th insulation resistance between the negative or positive electrode and the Battery case of internal set of cells meets second;
When the 4th insulation resistance satisfaction second is pre-conditioned, connect the negative or positive electrode and car of set of cells in Battery case Motor binding post;The 4th insulation resistance be unsatisfactory for second it is pre-conditioned when, produce and simultaneously send to vehicle The Battery case built-in electrical insulation failure message.
CN201410435952.6A 2014-08-29 2014-08-29 Battery management system and method for vehicle and vehicle CN104192018B (en)

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