CN204011596U - Vehicular battery group management system - Google Patents
Vehicular battery group management system Download PDFInfo
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- CN204011596U CN204011596U CN201420396731.8U CN201420396731U CN204011596U CN 204011596 U CN204011596 U CN 204011596U CN 201420396731 U CN201420396731 U CN 201420396731U CN 204011596 U CN204011596 U CN 204011596U
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- 238000010438 heat treatment Methods 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 6
- 230000004044 response Effects 0.000 claims description 6
- 238000007726 management method Methods 0.000 description 85
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
- 230000005855 radiation Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
The utility model discloses a kind of Vehicular battery group management system.Described system comprises: be separately positioned between the positive pole of described battery pack and negative pole and vehicle load and the positive switch and the negative switch that are in series electrically connected to described battery pack and described vehicle load; Be arranged on the pre-charge resistance and the precharge switch that are in series electrically connected between described battery pack and vehicle load; The first switch, the first end of described the first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described the first switch is connected between described negative switch and described vehicle load; And battery management unit, be used for controlling closure and/or disconnect positive switch, negative switch, precharge switch and/or the first switch, take realize by described battery pack as vehicle load precharge, by battery pack to vehicle load power supply or by pre-charge resistance, vehicle load is discharged.
Description
Technical field
The utility model relates generally to vehicle electric field, relates more specifically to a kind of Vehicular battery group management system.
Background technology
In vehicle, high pressure (HV) system, comprises battery, inverter, motor etc., has strict security requirement.Particularly in case of emergency, as while having an accident, fast and reliably by high voltage source, battery pack for example, from other parts of high-pressure system, for example vehicle load disconnects, and is vital.In addition the important point is as quickly as possible by other partial discharges of high-pressure system, to prevent that electric charge from dissipating out of control.For example, prevent system component, as cable, when damaged, produce arc event.In addition, in vehicle load, as electro-motor or power supply inverter unit other parts to high-pressure system continue in the situation of power supply, as due to after accident or lose causing after the control of transducer in situation that wheel rotates freely, although high voltage bus, high-tension battery disconnect completely, but the delivery system of dump energy will lose efficacy, and to cause other parts of high-pressure system be unsafe at concerned power in long-time.In this case, when vehicle collision occurs, need to provide sooner, more reliable solution disconnects battery pack and vehicle load or make vehicle load electric discharge.
On the other hand, the battery using in vehicle, in certain temperature range, lithium battery for example, the marked change along with the variation of temperature of its internal resistance.When temperature raises, lithium battery interior resistance reduces, and the efficiency of lithium battery improves thereupon, and battery can be in higher power level work.And when temperature is very low, lithium battery can not be worked at all.Therefore, when the temperature of lithium battery is too low, lithium battery need to be heated, could in cold environment, use.Conventionally, utilize the air cooling system of vehicle, by the air in use driver's cabin, as heating or cooling source, come lithium battery to heat.Yet when temperature is very low, damp and hot driver's cabin air can cause steam to condense on cold battery pack parts.If need to remove and to condense, still need to battery pack, heat from inside, extra heater block need to be provided and for heater block provides the power supply of electric energy, make the structure of battery circuit more complicated, increased cost.
Utility model content
In view of the above problems, the utility model has been proposed, to a kind of Vehicular battery group management system is provided, to overcome the problems referred to above or to address the above problem at least in part.
According to first aspect of the present utility model, a kind of Vehicular battery group management system is provided, described system comprises: positive switch, be arranged between the positive pole and vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load; Negative switch, is arranged between the negative pole and vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack; The first switch, the first end of described the first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described the first switch is connected between described negative switch and described vehicle load; Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, described battery management unit is used for disconnecting described positive switch and described negative switch, and closed described the first switch, take and discharged as described vehicle load by described pre-charge resistance.
According to an execution mode of the present utility model, described battery management unit also for: by described battery pack after vehicle load power supply, by described the first switch of closure to battery pack heating and disconnect closed described the first switch after heating completes.
According to an execution mode of the present utility model, wherein said battery management unit is also for the temperature of measuring described battery pack; Measured temperature is compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.
According to an execution mode of the present utility model, wherein said battery pack is a plurality of battery units that are in series electrically connected to, described pre-charge resistance be set to each battery unit in described a plurality of battery units between distance equate.
According to an execution mode of the present utility model, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance is arranged on the air intake place of described air cooling system.
According to an execution mode of the present utility model, wherein said battery pack comprises a plurality of battery units that are in series electrically connected to, described pre-charge resistance is several pre-charge resistances that are in series electrically connected to, and described several pre-charge resistances are evenly distributed in around described a plurality of battery unit.
According to an execution mode of the present utility model, wherein said a plurality of battery units are dispelled the heat by the liquid cooling system of described vehicle; Described several pre-charge resistances are near described a plurality of battery units.
According to an execution mode of the present utility model, described system also comprises: several second switches, and each in described several second switches is electrically connected in parallel with each pre-charge resistance in described several pre-charge resistances respectively; And described battery management unit is also for closed described the first switch; Closed or disconnect each in second switch described in several respectively, to control each the temperature in described a plurality of battery unit.
According to an execution mode of the present utility model, wherein said battery management unit is used for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described the first switch be take and discharged as described vehicle load by described pre-charge resistance.
According to an execution mode of the present utility model, described battery management unit also for: when vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described the first switch, by described pre-charge resistance, consumed the energy of described battery pack.
According to an execution mode of the present utility model, wherein at described pre-charge resistance, be outside equipped with metal-back.
According to an execution mode of the present utility model, described system also comprises: described pre-charge resistance is set to prism-shaped, cylindric or sheet.
According to second aspect of the present utility model, a kind of Vehicular battery group management system is provided, described system comprises: positive switch, be arranged between the anodal and described vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load; Negative switch, is arranged between the negative pole and described vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack; The first switch, the first end of described the first switch is connected in and is being connected between described negative switch and described vehicle load between the first end of described pre-charge resistance and the first end of described precharge switch and by the second end of described the first switch; Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; Whether and when vehicle has an accident, detecting described positive switch and described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, described battery management unit, for closed described the first switch, is consumed the energy of described battery pack by described pre-charge resistance.
According to an execution mode of the present utility model, described battery management unit is used for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch and described negative switch and whether cannot disconnect.
According to an execution mode of the present utility model, wherein said battery management unit also for: by described battery pack after vehicle load power supply, by described the first switch of closure to battery pack heating and disconnect closed described the first switch after heating completes.
According to an execution mode of the present utility model, wherein said battery management unit is also for the temperature of measuring described battery pack; Measured temperature is compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.
In a word, the Vehicular battery group management system that execution mode of the present utility model provides, a kind of quick, reliable and safe scheme is provided, not only can effectively avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load, and effectively by the residual charge electric discharge in vehicle load; Even if battery pack and vehicle load cannot disconnect, also can vehicle load be discharged by resistance, this scheme is effective and reliable; Can control the temperature of vehicle battery packs, control respectively each region of battery pack heat around, each battery unit is adjusted respectively to temperature, can control as required the speed that battery pack heats up simultaneously, heat is evenly distributed, so that the heating of all battery units has identical temperature; The a large amount of amount of localized heat that produce in the time of can working to battery circuit manage; Use the resistance that self can produce heat after energising as heating element, do not need to be set to the extra power supply of heater element power supply, simplified the structure of battery circuit, reduced cost; In addition, the Vehicular battery group management system that execution mode of the present utility model provides had both been applicable to use the vehicle of air cooling system, was also applicable to use the vehicle of liquid cooling system.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other objects, features and advantages of the present utility model can be become apparent, below especially exemplified by embodiment of the present utility model.
Accompanying drawing explanation
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skills.Accompanying drawing is only for the object of preferred implementation is shown, and do not think restriction of the present utility model.And in whole accompanying drawing, by identical reference symbol, represent identical parts.In the accompanying drawings:
Fig. 1 be according in the utility model one execution mode for controlling the schematic diagram of device of the temperature of battery pack;
Fig. 2 is according to the schematic diagram of a plurality of battery units and several the first resistance in battery pack in the utility model one execution mode; And
The curve chart of the voltage of vehicle load and the variations in temperature of battery pack when Fig. 3 is or disconnection closed according to each switch in the system 100 of the utility model one execution mode.
Embodiment
Illustrative embodiments of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown illustrative embodiments of the present disclosure in accompanying drawing, yet should be appreciated that and can realize the disclosure and the execution mode that should do not set forth limits here with various forms.On the contrary, it is in order more thoroughly to understand the disclosure that these execution modes are provided, and can by the scope of the present disclosure complete convey to those skilled in the art.Although should be appreciated that those skilled in the art can dream up not clearly description or record in this manual, still realize the utility model and be included in the various structures in the utility model spirit, principle and scope.All examples of quoting from this specification and conditional language are all the objects for explanation and instruction, with principle and the concept that helps reader understanding inventor to contribute to prior art, and should be understood to be not limited to these concrete example and conditions of quoting from.In addition, in order to be illustrated more clearly in, omitted the detailed description for known devices and circuit, not obscure description of the present utility model.Should be understood that unless stated otherwise, the feature in each execution mode described herein can combine mutually.
The quantity that it will be understood by those skilled in the art that each parts cited in exemplary execution mode of the present utility model is only for illustrative purposes, and not should be understood to restriction of the present utility model.In the utility model, each parts can have other quantity, and do not depart from scope of the present utility model.
In this manual, the function of each unit can by with specialized hardware or the hardware that can combine with suitable software to carry out processing realize.Such hardware or specialized hardware can comprise application-specific integrated circuit (ASIC) (ASIC), various other circuit, various processors etc.When being realized by processor, this function can be provided by single application specific processor, single shared processing device or a plurality of independently processor (wherein some may be shared).In addition, processor should not be understood to the hardware that special finger can executive software, but can impliedly comprise and be not limited to digital signal processor (DSP) hardware, be used for read-only memory (ROM), random access memory (RAM) and the non-volatile memory apparatus of storing software.
Execution mode one
According to first aspect of the present utility model, a kind of Vehicular battery group management system is provided, described system comprises: positive switch, be arranged between the positive pole and vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load; Negative switch, is arranged between the negative pole and vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack; The first switch, the first end of described the first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described the first switch is connected between described negative switch and described vehicle load; Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, described battery management unit is used for disconnecting described positive switch and described negative switch, and closed described the first switch, take and discharged as described vehicle load by described pre-charge resistance.
According to execution mode of the present utility model, battery pack, as lithium battery group, is other parts to the high-pressure system of vehicle, as inverter or motor, and the power supply of power supply.
Fig. 1 shows a non-limiting and exemplary execution mode of the present utility model.The annexation that should be appreciated that each unit represented in Fig. 1 is only example, and those skilled in the art can adopt other annexation completely, as long as function of the present utility model also can be realized in each unit under such annexation.
As shown in Figure 1, according to the Vehicular battery group management system 100 of illustrative embodiments of the present utility model, comprise positive switch 120 and negative switch 130.Positive switch 120 is arranged between the anodal and described vehicle load 101 of described battery pack 110, and described positive switch 120 is in series electrically connected to described battery pack 110 and described vehicle load 101.Negative switch 130 is arranged between the negative pole and described vehicle load 101 of described battery pack 110, and described negative switch 130 is in series electrically connected to described battery pack 110 and described vehicle load 101.
System 100 also comprises pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected to, and described pre-charge resistance 140 and the described precharge switch 150 of series connection are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, the second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110.
System 100 also comprises the first switch 160, the first end of described the first switch 160 is connected between the first end of described pre-charge resistance 140 and the first end of described precharge switch 150, and the second end of described the first switch 160 is connected between described negative switch 130 and described vehicle load 101.
System 100 also comprises battery management unit 170, and for disconnecting described the first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, take by described battery pack 110 is described vehicle load 101 precharge.When positive switch 120, negative switch 130 and the first switch 160 all disconnect, in whole battery circuit, there is no electric current.If without pre-charge process, and battery pack 110 is directly set to the normal power supply state to vehicle load, need closed positive switch 120 and negative switch 130 simultaneously, now can in circuit, produce an immediate current spike, have a strong impact on the useful life of each element in battery circuit.Therefore, closed positive switch 120 and negative switch 130 with by battery pack 110 to before vehicle load 101 power supplies, battery management unit 170 first disconnects described the first switch 160 and described positive switch 120, makes circuit in off-position; Then, the closed precharge switch 150 of battery management unit 170 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and load 101, by pre-charge resistance 140, serve as a part of load, thereby avoid immediate current spike, extend the useful life of each element in battery circuit.After precharge completes, described battery management unit 170 is for the described positive switch 120 of closure and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, now in pre-charge resistance 140, there is no electric current.When vehicle has an accident, described battery management unit 170 is for disconnecting described positive switch 120 and described negative switch 130, so that power-off between battery pack 110 and vehicle load 101, and closed described the first switch 160, now pre-charge resistance 140 is connected in series with vehicle load 101, by pre-charge resistance 140, is described vehicle load 101 electric discharges.
According to illustrative embodiments of the present utility model, described battery management unit 170 also for: by described battery pack 110 after vehicle load 101 power supply, by 110 heating of 160 pairs of battery pack of described the first switch of closure and disconnect closed described the first switch 160 after heating completes.After being powered to vehicle load 101 by described battery pack 110, positive switch 120 and negative switch 130 are all closed; When closed the first switch 160, thereby pre-charge resistance 140 energisings produce heat heating battery group 110; After heating completes, while disconnecting the first switch 160, in pre-charge resistance 140, there is no electric current, no longer produce heat, thereby maintain the temperature of battery pack or the temperature of battery pack is reduced gradually through heat radiation.This mode is used the resistance that self can produce heat after energising as heating element, does not need to be set to the extra power supply of heater element power supply, has simplified the structure of battery circuit, has reduced cost.
According to illustrative embodiments of the present utility model, described battery management unit 170 is also for the temperature of measuring described battery pack; Measured temperature is compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.As shown in Figure 1, the closed positive switch 120 of battery management unit 170 and negative switch 130 are to be powered to vehicle load by battery pack 110; Battery management unit 170 is measured the temperature T of battery pack 110; By the temperature T of measured battery pack and predetermined temperature threshold T
0compare, alternatively, predetermined temperature threshold T
0can be the temperature of battery pack operating efficiency when the highest.Alternatively, described in the temperature T of the battery pack that detects can be the temperature directly being recorded by a temperature sensor, can be also the mean value of the temperature that detects of one group of temperature sensor or the battery pack temperature drawing according to other algorithms.When measured temperature T is less than temperature threshold T
0, closed the first switch 160 of battery management unit 170, the first switch 160 is electrically connected to pre-charge resistance 140 in parallel with battery pack 110, after pre-charge resistance 140 energisings, produces heat, thus heating battery group 110.When measured temperature T is equal to or greater than temperature threshold T
0, battery management unit 170 disconnects the first closed switch 160, in pre-charge resistance 140, there is no electric current, no longer produces heat, thereby the temperature T of battery pack 110 is maintained to temperature threshold T
0or make the temperature T of battery pack 110 be reduced to gradually temperature threshold T through heat radiation
0.This mode is used the resistance that self can produce heat after energising as heating element, does not need to be set to the extra power supply of heater element power supply, has simplified the structure of battery circuit, has reduced cost.
According to illustrative embodiments of the present utility model, described battery pack 110 is a plurality of battery units that are in series electrically connected to, described pre-charge resistance 140 be set to each battery unit in described a plurality of battery units between distance equate.Alternatively, battery pack can comprise a plurality of battery units, and these battery units can and/or be connected in parallel with various combined serial, so that required voltage and energy to be provided.For example, battery pack can comprise a plurality of battery units that are connected in series, and each battery unit also can comprise a plurality of series connection and/or the battery being connected in parallel.In order to pack, the object such as installation, safety management and control, these battery units can be set to independently module.For example, for a battery pack with 96 batteries that are connected in series, can battery pack be set to 12 battery units that are connected in series, each battery unit can be set to independently module, and each module comprises 8 batteries that are connected in series.The quantity that it will be understood by those skilled in the art that each parts cited in exemplary execution mode of the present utility model is only for illustrative purposes, and not should be understood to restriction of the present utility model.In the utility model, each parts can have other quantity, and do not depart from scope of the present utility model.Alternatively, a plurality of battery units can be evenly distributed on and take on the circumference that pre-charge resistance 140 is the center of circle.Alternatively, a plurality of battery units can be evenly distributed on and take on the sphere that pre-charge resistance 140 is the centre of sphere.This mode makes pre-charge resistance heat equably each battery unit in battery pack.
According to illustrative embodiments of the present utility model, described battery pack 110 is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance 140 is arranged on the air intake place of described air cooling system.Air in the air cooling system use driver's cabin of vehicle, as heating or cooling source, comes battery pack 110 heating or heat radiation.By pre-charge resistance 140 being arranged on to the air intake place of described air cooling system, make air in driver's cabin when through air intake place, be arranged on pre-charge resistance 140 heating of the air intake of described air cooling system, air after heating arrives and surrounds battery pack 110 fast, to battery pack 110 heating.This mode, can be delivered to battery pack quickly by heat, and has increased the contact area that battery pack participation heat is transmitted, thereby battery pack is heated up quickly.
According to illustrative embodiments of the present utility model, described battery pack comprises a plurality of battery units that are in series electrically connected to, described pre-charge resistance is several pre-charge resistances that are in series electrically connected to, described several pre-charge resistances are evenly distributed in around described a plurality of battery unit, can control more equably the temperature of battery pack.Alternatively, the quantity of battery unit can equal the quantity of pre-charge resistance, also can be not equal to the quantity of pre-charge resistance.Alternatively, as shown in Figure 2, battery pack 110 can comprise a plurality of, as 9 battery unit 111-119 that are in series electrically connected to, pre-charge resistance 140 is several, as four pre-charge resistance 141-144 that are in series electrically connected to, these four pre-charge resistance 141-144 can be configured to be evenly distributed in battery pack, around battery unit 111-119.Alternatively, this battery pack can have the battery unit of other quantity.Alternatively, pre-charge resistance can be also the pre-charge resistance of other quantity.Fig. 2 shows according to the schematic diagram of a plurality of battery units and several pre-charge resistances in battery pack in illustrative embodiments of the present utility model.As shown in Figure 2, when the battery unit 111-119 in battery pack equidistantly arranges along a straight line successively, pre-charge resistance 141 can be arranged on battery unit 112 places, pre-charge resistance 142 is arranged on battery unit 114 places, pre-charge resistance 143 is arranged on battery unit 116 places, pre-charge resistance 144 is arranged on battery unit 118 places, so that the each several part homogeneous heating of battery pack.Alternatively, can be set to a module by four pre-charge resistance 141-144,9 battery unit 111-119 are evenly distributed on and are take on the circumference that this module is the center of circle.Alternatively, can be set to a module by 9 battery unit 111-119, four pre-charge resistance 141-144 are evenly distributed on and are take on the sphere that this module is the centre of sphere.Alternatively, can be set to a module by 9 battery unit 111-119, four pre-charge resistance 141-144 are evenly distributed on and are take on the circumference that this module is the center of circle.Alternatively, pre-charge resistance can, near battery pack setting, also can be set to apart from battery pack one segment distance.
According to illustrative embodiments of the present utility model, described a plurality of battery units are dispelled the heat by the liquid cooling system of described vehicle; Described several pre-charge resistances are near described a plurality of battery units, so that heat can be directly delivered to battery pack from pre-charge resistance, thereby by the each several part homogeneous heating of battery pack.As shown in Figure 2, the battery pack of system 100 comprises 9 battery unit 111-119, and 4 pre-charge resistance 141-144 are evenly distributed in around battery unit 111-119.When liquid cooling system when heat radiation of battery pack by described vehicle, pre-charge resistance 141 is set near battery unit 112, pre-charge resistance 142 is set near battery unit 114, pre-charge resistance 143 is set near battery unit 116, pre-charge resistance 144 is set near battery unit 118, so that heat can be directly delivered to battery pack from pre-charge resistance, thereby by the each several part homogeneous heating of battery pack.Alternatively, can be set to a module by four pre-charge resistance 141-144,9 battery unit 111-119 are uniformly distributed near this module.Alternatively, can be set to a module by 9 battery unit 111-119, four pre-charge resistance 141-144 are uniformly distributed near this module.
According to illustrative embodiments of the present utility model, system 100 also comprises: several second switches, and each in described several second switches is electrically connected in parallel with each pre-charge resistance in described several pre-charge resistances respectively; And described battery management unit is also for closed described the first switch; Closed or disconnect each in second switch described in several respectively, to control each the temperature in described a plurality of battery unit.
As shown in Figure 2, described battery pack 110 comprises a Battery pack unit of series connection, for example, comprise a Battery pack unit of 9 battery unit 111-119 of series connection, and several pre-charge resistances of series connection, for example 4 pre-charge resistance 141-144.System 100 also comprises several second switches, 4 second switch 181-184 for example, each second switch is electrically connected in parallel with a pre-charge resistance respectively, for example second switch 181 is electrically connected in parallel with pre-charge resistance 141, second switch 182 is electrically connected in parallel with pre-charge resistance 142, second switch 183 is electrically connected in parallel with pre-charge resistance 143, and second switch 184 is electrically connected in parallel with pre-charge resistance 144.Battery management unit 170 is also for closed positive switch 120 and negative switch 130, by battery pack, vehicle load is powered, and closed the first switch 160, so that the pre-charge resistance 141-144 of series connection with it energising; Closed or disconnect each in second switch 181-184 described in several respectively, make respectively the pre-charge resistance 141-144 short circuit in parallel with it or normally work, to control respectively each the temperature in described a plurality of battery unit.For example, closed positive switch 120 and negative switch 130, and after closed the first switch 160, battery management unit 170 can closed second switch 182, makes the pre-charge resistance in parallel with it 142 short circuits and does not produce heat; Disconnect second switch 181,183 and 184 simultaneously, make the pre-charge resistance in parallel with it 141,143 and 144 normal work and generation heat, thereby heating is arranged on pre-charge resistance 141,143 and near 144 a plurality of battery units.Alternatively, battery management unit 170 is closed a plurality of second switches simultaneously, disconnect other second switches.Alternatively, battery management unit 170 can be within a plurality of time intervals closed a plurality of second switch successively, in each time interval, an only closed second switch, disconnects other second switches.
According to illustrative embodiments of the present utility model, alternatively, described battery management unit 160 and control unit for vehicle or the communication connection of air bag control unit.Described battery management unit 170 for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, disconnect described positive switch 120 and described negative switch 130, and closed described the first switch 160, take and discharged as described vehicle load by described pre-charge resistance 140.
According to illustrative embodiments of the present utility model, wherein said battery management unit 170 also for: when vehicle has an accident, when described positive switch 120 and described negative switch 130 cannot disconnect, disconnect described precharge switch 150 and closed described the first switch 160, by described pre-charge resistance, consumed the energy of described battery pack 110.When positive switch 120 and negative switch 130 lost efficacy, cannot disconnect, battery management unit 170 disconnects precharge switch 150 and closed described the first switch 160, pre-charge resistance 140 is electrically connected to, by the energy of pre-charge resistance 140 consuming cells groups 110 with battery pack 110 and vehicle load 101.Whether detection positive switch 120 and negative switch 130 cannot disconnect can be used any mode of the prior art, such as realizing by detecting battery pack temperature or testing circuit electric current etc.
According to illustrative embodiments of the present utility model, wherein, at described pre-charge resistance 140, be outside equipped with metal-back, with heat release more quickly and efficiently.
According to illustrative embodiments of the present utility model, described pre-charge resistance 140 is set to prism-shaped, cylindric or sheet.
The curve chart of the voltage of vehicle load and the variations in temperature of battery pack when Fig. 3 shows or disconnection closed according to each switch in the system 100 of execution mode of the present utility model.
As shown in Figure 3, at time interval t
1in, battery management unit 170 disconnects positive switch 120, negative switch 130, precharge switch 150 and the first switch 160.Now, battery pack 110 is to vehicle load power supply, there is no electric current, heating battery group not in pre-charge resistance 140, and the voltage of vehicle load is 0, and the temperature T of battery pack equals ambient temperature and lower than temperature threshold T
0.Alternatively, when vehicle has an accident, battery management unit 170 disconnects positive switch 120, negative switch 130, precharge switch 150, and closed the first switch 160, vehicle load 101 is discharged by pre-charge resistance 140.
At time interval t
2in, for fear of simultaneously closed positive switch 120 and negative switch 130, causing producing immediate current spike in circuit, battery management unit 170 still remains open the first switch 160 and positive switch 120, and now circuit is in off-position; Then, the closed precharge switch 150 of battery management unit 170 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and vehicle load 101, pre-charge resistance 140 serves as a part of load, by battery pack 110, to vehicle load 101, powered, the voltage V rising of vehicle load, thus avoid immediate current spike.When the voltage V of vehicle load reaches normal working voltage V
0time, closed positive switch 120, disconnects precharge switch 150 subsequently, no current in pre-charge resistance 140 now, and battery pack 110 is in the normal power supply state to vehicle load 101.At time interval t
2in, the first switch 160 remains open always, heating battery group not, and the temperature T of battery pack still equals ambient temperature and lower than temperature threshold T
0.
At time interval t
3in, battery management unit 170 remains closed positive switch 120 and negative switch 130, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open, now no current in pre-charge resistance 140; The voltage V of vehicle load remains on normal working voltage V
0.At time interval t
3in, the first switch 160 remains open always, there is no electric current, heating battery group not in pre-charge resistance 140, and the temperature T of battery pack still equals ambient temperature and lower than temperature threshold T
0.
At time interval t
4in, battery management unit 170 remains closed positive switch 120 and negative switch 130, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open; The voltage V of vehicle load remains on normal working voltage V
0.The temperature T that battery pack detected when battery management unit 170 is less than temperature threshold T
0, closed the first switch 160, has electric current and produces heat in pre-charge resistance 140, and heating battery group 110, and the temperature T of battery pack is increased to temperature threshold T
0.
At time interval t
5in, battery management unit 170 remains closed positive switch 120 and negative switch 130, and battery pack 110 is in the normal power supply state to vehicle load 101; Precharge switch 150 remains open; The voltage V of vehicle load remains on normal working voltage V
0.The temperature T that battery pack detected when battery management unit 170 is equal to or greater than temperature threshold T
0, disconnect the first switch 160, in pre-charge resistance 140, there is no electric current and no longer produce heat, the temperature T of battery pack remains on temperature threshold T
0or be reduced to gradually temperature threshold T through heat radiation
0.
At time interval t
6in, for example, when vehicle has an accident, battery management unit 170 disconnects described positive switch 120 and described negative switch 130, so that power-off between battery pack 110 and vehicle load 101, and closed described the first switch 160, now pre-charge resistance 140 is connected in series with vehicle load 101, by pre-charge resistance 140, is described vehicle load 101 electric discharges, and the voltage fast reducing that makes vehicle load 101 is 0.Now, pre-charge resistance 140 has electric current and produces heat, and of short duration heating battery group 110, because of discharge time very short, therefore the temperature T of battery pack rises and is not obvious.
After electric discharge completely, at time interval t
7in, battery management unit 170 disconnects positive switch 120, negative switch 130, the first switch 160 and precharge switch 150.Now, battery pack 110 is to vehicle load power supply, there is no electric current, heating battery group not in pre-charge resistance 140, and the voltage of vehicle load is 0, and the temperature T of battery pack drops to ambient temperature gradually.Alternatively, battery management unit 170 is closed the first switch 160 always, until battery pack is carried out to precharge.
In a word, the Vehicular battery group management system that execution mode of the present utility model provides, a kind of quick, reliable and safe scheme is provided, not only can effectively avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load, and effectively by the residual charge electric discharge in vehicle load; Even if battery pack and vehicle load cannot disconnect, also can vehicle load be discharged by resistance, this scheme is effective and reliable; Can control the temperature of vehicle battery packs, control respectively each region of battery pack heat around, each battery unit is adjusted respectively to temperature, can control as required the speed that battery pack heats up simultaneously, heat is evenly distributed, so that the heating of all battery units has identical temperature; The a large amount of amount of localized heat that produce in the time of can working to battery circuit manage; Use the resistance that self can produce heat after energising as heating element, do not need to be set to the extra power supply of heater element power supply, simplified the structure of battery circuit, reduced cost; In addition, the Vehicular battery group management system that execution mode of the present utility model provides had both been applicable to use the vehicle of air cooling system, was also applicable to use the vehicle of liquid cooling system.
Execution mode two
According to second aspect of the present utility model, a kind of Vehicular battery group management system is provided, described system comprises: positive switch, be arranged between the anodal and described vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load; Negative switch, is arranged between the negative pole and described vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load; Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack; The first switch, the first end of described the first switch is connected in and is being connected between described negative switch and described vehicle load between the first end of described pre-charge resistance and the first end of described precharge switch and by the second end of described the first switch; Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; Whether and when vehicle has an accident, detecting described positive switch and described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, described battery management unit, for closed described the first switch, is consumed the energy of described battery pack by described pre-charge resistance.
According to execution mode of the present utility model, battery pack, as lithium battery group, is other parts to the high-pressure system of vehicle, as inverter or motor, and the power supply of power supply.
As shown in Figure 1, according to the Vehicular battery group management system 100 of illustrative embodiments of the present utility model, comprise positive switch 120 and negative switch 130.Positive switch 120 is arranged between the anodal and described vehicle load 101 of described battery pack 110, and described positive switch 120 is in series electrically connected to described battery pack 110 and described vehicle load 101.Negative switch 130 is arranged between the negative pole and described vehicle load 101 of described battery pack 110, and described negative switch 130 is in series electrically connected to described battery pack 110 and described vehicle load 101.
System 100 also comprises pre-charge resistance 140 and precharge switch 150, described pre-charge resistance 140 and described precharge switch 150 are in series electrically connected to, and described pre-charge resistance 140 and the described precharge switch 150 of series connection are arranged between described battery pack 110 and vehicle load 101, wherein, the first end of described pre-charge resistance 140 is connected with the first end of described precharge switch 150, the second end of described pre-charge resistance 140 is connected between described positive switch 120 and described vehicle load 101, and the second end of described precharge switch 150 is connected between described positive switch 120 and the positive pole of described battery pack 110.
System 100 also comprises the first switch 160, the first end of described the first switch 160 is connected between the first end of described pre-charge resistance 140 and the first end of described precharge switch 150, and the second end of described the first switch 160 is connected between described negative switch 130 and described vehicle load 101.
System 100 also comprises battery management unit 170, and for disconnecting described the first switch 160 and described positive switch 120, closed described negative switch 130 and described precharge switch 150, take by described battery pack 110 is described vehicle load 101 precharge.When positive switch 120, negative switch 130 and the first switch 160 all disconnect, in whole battery circuit, there is no electric current.If without pre-charge process, and battery pack is directly set to the normal power supply state to vehicle load, need closed positive switch 120 and negative switch 130 simultaneously, now can in circuit, produce an immediate current spike, have a strong impact on the useful life of each element in battery circuit.Therefore, closed positive switch 120 and negative switch 130 with by battery pack 110 to before vehicle load 101 power supplies, battery management unit 170 first disconnects described the first switch 160 and described positive switch 120, makes circuit in off-position; Then, the closed precharge switch 150 of battery management unit 170 and negative switch 130, now, pre-charge resistance 140 is connected in series with battery pack 110 and load 101, by pre-charge resistance 140, serve as a part of load, thereby avoid immediate current spike, extend the useful life of each element in battery circuit.After precharge completes, described battery management unit 170 is for the described positive switch 120 of closure and described negative switch 130, disconnect described precharge switch 150, to be powered to vehicle load 101 by described battery pack 110, now in pre-charge resistance 140, there is no electric current.When vehicle has an accident, described battery management unit 170 is also suitable for: when vehicle has an accident, detect described positive switch 120 and whether described negative switch 130 disconnects; When positive switch 120 and negative switch 130 lost efficacy, cannot disconnect, closed described the first switch 160 of battery management unit 170, pre-charge resistance 140 is electrically connected to, by the energy of pre-charge resistance 140 consuming cells groups 110 with battery pack 110 and vehicle load 101.
According to execution mode of the present utility model, described battery management unit 170 for: when vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit; In response to described trouble signal, detect described positive switch 120 and whether described negative switch 130 cannot disconnect.Alternatively, battery management unit 170 and control unit for vehicle or the communication connection of air bag control unit.
According to execution mode of the present utility model, described battery management unit 170 also for: by described battery pack after vehicle load power supply, by described the first switch of closure to battery pack heating and disconnect closed described the first switch after heating completes.After being powered to vehicle load 101 by described battery pack 110, positive switch 120 and negative switch 130 are all closed; Closed the first switch 160 of battery management unit 170, thus pre-charge resistance 140 energisings produce heat heating battery group 110; After heating completes, battery management unit 170 disconnects the first switch 160, in pre-charge resistance 140, there is no electric current, no longer produces heat, thereby maintains the temperature of battery pack or the temperature of battery pack is reduced gradually through heat radiation.This mode is used the resistance that self can produce heat after energising as heating element, does not need to be set to the extra power supply of heater element power supply, has simplified the structure of battery circuit, has reduced cost.
According to execution mode of the present utility model, described battery management unit 170 is also for the temperature of measuring described battery pack; Measured temperature is compared with predetermined temperature threshold; When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.As shown in Figure 1, the closed positive switch 120 of battery management unit 170 and negative switch 130 are to be powered to vehicle load by battery pack 110; Battery management unit 170 is measured the temperature T of battery pack 110; By the temperature T of measured battery pack and predetermined temperature threshold T
0compare, alternatively, predetermined temperature threshold T
0can be the temperature of battery pack operating efficiency when the highest.Alternatively, described in the temperature T of the battery pack that detects can be the temperature directly being recorded by a temperature sensor, can be also the mean value of the temperature that detects of one group of temperature sensor or the battery pack temperature drawing according to other algorithms.When measured temperature T is less than temperature threshold T
0, closed the first switch 160 of battery management unit 170, the first switch 160 is electrically connected to pre-charge resistance 140 in parallel with battery pack 110, after pre-charge resistance 140 energisings, produces heat, thus heating battery group 110.When measured temperature T is equal to or greater than temperature threshold T
0, battery management unit 170 disconnects the first closed switch 160, in pre-charge resistance 140, there is no electric current, no longer produces heat, thereby the temperature T of battery pack 110 is maintained to temperature threshold T
0or make the temperature T of battery pack 110 be reduced to gradually temperature threshold T through heat radiation
0.This mode is used the resistance that self can produce heat after energising as heating element, does not need to be set to the extra power supply of heater element power supply, has simplified the structure of battery circuit, has reduced cost.
The foregoing description of the Vehicular battery group management system in execution mode one also be can be applicable to according to the Vehicular battery group management system in execution mode two of the present utility model, and the object for concise and to the point, does not repeat them here.
In a word, the Vehicular battery group management system that execution mode of the present utility model provides, a kind of quick, reliable and safe scheme is provided, not only can effectively avoid the immediate current spike in battery circuit, extend the useful life of each parts, battery can also be disconnected from vehicle load, and effectively by the residual charge electric discharge in vehicle load; Even if battery pack and vehicle load cannot disconnect, also can vehicle load be discharged by resistance, this scheme is effective and reliable; Can control the temperature of vehicle battery packs, control respectively each region of battery pack heat around, can control as required the speed that battery pack heats up simultaneously, a large amount of amount of localized heat that produce in the time of can working to battery circuit manage; Use the resistance that self can produce heat after energising as heating element, do not need to be set to the extra power supply of heater element power supply, simplified the structure of battery circuit, reduced cost.
In this manual, a large amount of details has been described.Yet, should be appreciated that execution mode of the present utility model can not implement in the situation that there is no these details.In some embodiments, be not shown specifically known method, structure and technology, to do not make reader obscure the understanding to the principle of this specification.
It will be understood by those skilled in the art that and can the module in the device in each execution mode adaptively be changed, and they are arranged in one or more devices different from this execution mode.Except feature or the mutual situation about repelling of processing, can adopt any combination, all modules of disclosed any device in this specification are combined.Unless clearly statement in addition, in this specification disclosed each feature can be by providing identical, be equal to or similar object alternative features replaces.
It should be noted that above-mentioned execution mode describes the utility model rather than the utility model is limited, and those skilled in the art are not in the situation that depart from the scope of claims, can design various alternate embodiments.In claims, the sequence of feature does not also mean that any particular order of feature.In claims, any reference marker that is positioned at bracket should be understood as to limitations on claims.Term " comprises " or " comprising " do not got rid of existence and be not listed as module or step in the claims.Being positioned at term " " before module or step or " one " does not get rid of and has a plurality of such modules or step.The use of term " first ", " second " and " the 3rd " etc. does not represent any order, can be title by these terminological interpretations.
Claims (16)
1. a Vehicular battery group management system, is characterized in that, described system comprises:
Positive switch, is arranged between the positive pole and vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load;
Negative switch, is arranged between the negative pole and vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load;
Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack;
The first switch, the first end of described the first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch, and the second end of described the first switch is connected between described negative switch and described vehicle load;
Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; And when vehicle has an accident, described battery management unit is used for disconnecting described positive switch and described negative switch, and closed described the first switch, take and discharged as described vehicle load by described pre-charge resistance.
2. the system as claimed in claim 1, wherein said battery management unit also for:
After being powered to vehicle load by described battery pack, described the first switch that battery pack is heated and disconnect closure after heating completes by described the first switch of closure.
3. system as claimed in claim 2, wherein said battery management unit also for:
Measure the temperature of described battery pack;
Measured temperature is compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.
4. system as claimed in claim 2, wherein said battery pack is a plurality of battery units that are in series electrically connected to, described pre-charge resistance be set to each battery unit in described a plurality of battery units between distance equate.
5. system as claimed in claim 2, wherein said battery pack is dispelled the heat by the air cooling system of described vehicle; And described pre-charge resistance is arranged on the air intake place of described air cooling system.
6. system as claimed in claim 2, wherein said battery pack comprises a plurality of battery units that are in series electrically connected to, described pre-charge resistance is several pre-charge resistances that are in series electrically connected to, and described several pre-charge resistances are evenly distributed in around described a plurality of battery unit.
7. system as claimed in claim 6, wherein said a plurality of battery units are dispelled the heat by the liquid cooling system of described vehicle; Described several pre-charge resistances are near described a plurality of battery units.
8. the system as described in claim 6 or 7, also comprises:
Several second switches, each in described several second switches is electrically connected in parallel with each pre-charge resistance in described several pre-charge resistances respectively; And described battery management unit also for:
Closed described the first switch;
Closed or disconnect each in second switch described in several respectively, to control each the temperature in described a plurality of battery unit.
9. the system as claimed in claim 1, wherein said battery management unit is used for:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, disconnect described positive switch and described negative switch, and closed described the first switch be take and discharged as described vehicle load by described pre-charge resistance.
10. the system as claimed in claim 1, wherein said battery management unit also for:
When vehicle has an accident, when described positive switch and described negative switch cannot disconnect, disconnect described precharge switch and closed described the first switch, by described pre-charge resistance, consumed the energy of described battery pack.
11. the system as claimed in claim 1, wherein
At described pre-charge resistance, be outside equipped with metal-back.
12. the system as claimed in claim 1, also comprise:
Described pre-charge resistance is set to prism-shaped, cylindric or sheet.
13. 1 kinds of Vehicular battery group management systems, is characterized in that, described system comprises:
Positive switch, is arranged between the anodal and described vehicle load of described battery pack, and described positive switch is in series electrically connected to described battery pack and described vehicle load;
Negative switch, is arranged between the negative pole and described vehicle load of described battery pack, and described negative switch is in series electrically connected to described battery pack and described vehicle load;
Pre-charge resistance and precharge switch, described pre-charge resistance and described precharge switch are in series electrically connected to, and described pre-charge resistance and the described precharge switch of series connection are arranged between described battery pack and vehicle load, wherein, the first end of described pre-charge resistance is connected with the first end of described precharge switch, the second end of described pre-charge resistance is connected between described positive switch and described vehicle load, and the second end of described precharge switch is connected between described positive switch and the positive pole of described battery pack;
The first switch, the first end of described the first switch is connected between the first end of described pre-charge resistance and the first end of described precharge switch and by the second end of described the first switch and is connected between described negative switch and described vehicle load;
Battery management unit, for disconnecting described the first switch and described positive switch, closed described negative switch and described precharge switch, take by described battery pack is described vehicle load precharge; After precharge completes, described battery management unit, for closed described positive switch and described negative switch, disconnects described precharge switch, to be powered to vehicle load by described battery pack; Whether and when vehicle has an accident, detecting described positive switch and described negative switch cannot disconnect; When described positive switch and described negative switch cannot disconnect, described battery management unit, for closed described the first switch, is consumed the energy of described battery pack by described pre-charge resistance.
14. systems as claimed in claim 13, wherein said battery management unit is used for:
When vehicle has an accident, receive the trouble signal of control unit for vehicle or air bag control unit;
In response to described trouble signal, detect described positive switch and described negative switch and whether cannot disconnect.
15. systems as claimed in claim 13, wherein said battery management unit also for:
After being powered to vehicle load by described battery pack, described the first switch that battery pack is heated and disconnect closure after heating completes by described the first switch of closure.
16. systems as claimed in claim 15, wherein said battery management unit also for:
Measure the temperature of described battery pack;
Measured temperature is compared with predetermined temperature threshold;
When measured temperature is less than described temperature threshold, closed described the first switch; And when measured temperature is equal to or greater than described temperature threshold, disconnect closed described the first switch, to control the temperature of described battery pack.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396731.8U CN204011596U (en) | 2014-07-17 | 2014-07-17 | Vehicular battery group management system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420396731.8U CN204011596U (en) | 2014-07-17 | 2014-07-17 | Vehicular battery group management system |
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|---|---|
| CN204011596U true CN204011596U (en) | 2014-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336994A (en) * | 2014-07-17 | 2016-02-17 | 观致汽车有限公司 | System and method used for vehicle battery pack management |
| CN110719856A (en) * | 2017-04-07 | 2020-01-21 | 三星Sdi株式会社 | Power supply system for driving vehicle |
-
2014
- 2014-07-17 CN CN201420396731.8U patent/CN204011596U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336994A (en) * | 2014-07-17 | 2016-02-17 | 观致汽车有限公司 | System and method used for vehicle battery pack management |
| CN105336994B (en) * | 2014-07-17 | 2018-04-13 | 观致汽车有限公司 | For Vehicular battery group management system and method |
| CN110719856A (en) * | 2017-04-07 | 2020-01-21 | 三星Sdi株式会社 | Power supply system for driving vehicle |
| CN110719856B (en) * | 2017-04-07 | 2024-03-15 | 三星Sdi株式会社 | Power supply system for driving vehicle |
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Denomination of utility model: Management system and method for vehicle battery pack Effective date of registration: 20170104 Granted publication date: 20141210 Pledgee: American quantum Corporation|Wuhu Chery Automobile Investment Co., Ltd. Pledgor: Ooros Automotive Co., Ltd. Registration number: 2016990001207 |
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