Battery management system and corresponding electronic system
Technical field
The utility model relates to the battery technology field, particularly relates to a kind of battery management system and corresponding electronic system.
Background technology
In the battery applications process, because load, for example powerful battery-operated motor cycle or the like; Usually need big electric current to carry out work, therefore, in the unlatching and turn off process of big electric current; It can produce rush of current and big hear rate, and in addition, it also can damage big current control device.
Present main solution is to adopt big relay or contactor directly to open or turn-off big electric current.But, when being big electric current through big current control device, the shortcoming of such scheme can produce hear rate, reduce the energy efficiency of whole system.Simultaneously, in big electric current unlatching or turn off process, can produce the surge impact of big electric current, thus the infringement battery management system.In addition, the action that big electric current was opened or turn-offed to big current control device itself continually then can reduce its life-span.Therefore, needing badly provides a kind of new battery management system, to address the above problem.
The utility model content
In order to address the deficiencies of the prior art, the purpose of the utility model is to provide a kind of new battery management system and corresponding electronic system.
The utility model provides a kind of battery management system; It comprises the discharge loop that is connected between a battery apparatus and the load, and detects the state of this battery apparatus and when this battery apparatus is in abnormality, produce the main discharge control module of control signal corresponding.
Preferably; This main discharge control module comprises the state that detects this battery apparatus when this battery apparatus is in abnormality, producing the battery operated state-detection module of this control signal corresponding, and is connected the relay between this battery operated state-detection module and this load.
Preferably, this battery management system further comprises the auxiliary discharge control module, and it is connected between the power supply port of this battery apparatus and this load.
Preferably, this auxiliary discharge control module comprises switch, is connected between this power supply port of this battery apparatus and this load, and receives this control signal corresponding that this main discharge control module is produced.
Preferably, this auxiliary discharge control module further comprises resistance and fuse, and itself and this switch is connected between this power supply port of this battery apparatus and this load.
The utility model also provides a kind of electronic system, and it comprises battery apparatus, load and battery management system.This battery management system comprises the discharge loop that is connected between this battery apparatus and this load, and detects the state of this battery apparatus and when this battery apparatus is in abnormality, produce the main discharge control module of control signal corresponding.
Preferably, this load comprises the abnormality detection port, and it connects this main discharge control module, to receive this control signal corresponding.
Preferably, this load comprises the power supply port.
Preferably, this battery management system further comprises the auxiliary discharge control module, is connected between this power supply port of this battery apparatus and this load.
Preferably, this auxiliary discharge control module comprises switch, is connected between this power supply port of this battery apparatus and this load, and receives this control signal corresponding that this main discharge control module is produced.
In sum, the utility model is to utilize the state of battery management system detecting battery apparatus and determine whether to make battery apparatus to supply power to load, and when battery apparatus is in abnormality, forces load initiatively to quit work, to reach the purpose of turn-offing big electric current.Simultaneously; Owing on the discharge loop between battery apparatus and the load control element is not set; Therefore in the unlatching of big electric current with when turn-offing; Big electric current can't pass through main discharge control module and the auxiliary discharge control module as control element, so the thermal losses of battery management system is less.And; The unlatching of big electric current and when turn-offing is a loaded work piece and initiatively quit work and open or cut off the electric connection between battery apparatus and the load realizing, does not exist control element to open and shutoff in big electric current moment down; Therefore can not produce heavy current impact; Then the battery management system of the utility model is simple in structure, cost is lower, and it adopts the duplicate protection of main discharge control module and auxiliary discharge control module, so its reliability is higher.
Above-mentioned explanation only is the general introduction of the utility model technical scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of specification, and for let the above-mentioned of the utility model with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is the sketch map of the electronic system that disclosed of the utility model one preferred embodiment.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked; Below in conjunction with accompanying drawing and preferred embodiment; To battery management system and its embodiment of electronic system, method, step, structure, characteristic and the effect thereof that proposes according to the utility model, specify as follows.Aforementioned and other technology contents, characteristics and the effect of relevant the utility model can be known to appear in the following detailed description that cooperates with reference to graphic preferred embodiment.Explanation through embodiment; When can being to reach technological means and the effect that predetermined purpose takes to be able to more deeply and concrete understanding to the utility model; Yet the appended graphic usefulness that only provides reference and explanation is not to be used for the utility model is limited.
Fig. 1 is the sketch map of the electronic system that disclosed of the utility model one preferred embodiment.As shown in Figure 1, the electronic system 100 of the utility model comprises battery apparatus 110, battery management system 120 and load 130.Wherein, battery apparatus 110 is used for that its electric energy stored is transferred to load 130 and gives load 130 with power supply, and battery management system 120 is connected between battery apparatus 110 and the load 130 to determine whether make battery apparatus 110 power supplies give load 130.In the utility model, battery apparatus 110 provides big electric current to load 130, so that work is carried out in load 130.
Battery apparatus 110 can be formed by a plurality of battery combination, for example, is in series by a plurality of batteries.And load 130 can be the motor of all kinds of motor vehicles (for example battery-operated motor cycle or automobile or the like); Wherein load 130 also comprises controller 131 (for example motor controller), and controller 131 has positive and negative electrode (not indicating), abnormality detection port one 311 and power supply port 1312.
Battery management system 120 comprises discharge loop 121, main discharge control module 122 and auxiliary discharge control module 123.Discharge loop 121 is connected between battery apparatus 110 and the load 130, so that battery apparatus 110 is supplied power to load 130 through discharge loop 121.In the present embodiment, battery apparatus 110 is to supply power to the motor controller in the load 130 131 through discharge loop 121, supplies power to motor (not indicating) through motor controller 131 again.Discharge loop 121 can be lead, and promptly the positive and negative electrode of battery apparatus 110 directly electrically connects the positive and negative electrode of load 130 respectively.Certainly, it will be appreciated by persons skilled in the art that the electronic device that can also comprise in the discharge loop 121 that some is commonly used, fuse (Fuse) 1210 for example is with protection load 130.
Main discharge control module 122 comprises battery operated state-detection module 1221 and relay 1222.Wherein, battery operated state-detection module 1221 is used to detect the state of battery apparatus 110, whether is in abnormality and produces control signal corresponding CS to judge battery apparatus 110.Relay 1222 is connected between the abnormality detection port one 311 of battery operated state-detection module 1221 and load 130, so that control signal CS is passed to load 130.Therefore; When battery apparatus 110 is in abnormality; Main discharge control module 122 can produce control signal corresponding CS, and after load 130 received control signal CS, it can initiatively quit work; Thereby cut off the electric connection between battery apparatus 110 and the load 130, promptly forced battery apparatus 110 to stop power supply to load 130.
Auxiliary discharge control module 123 mainly comprises switch 1231; PMOS for example; It is connected between the power supply port 1312 of battery apparatus 110 and load 130; And switch 1231 also further connects the control signal that main discharge control module 122 is produced with reception main discharge control signal 122, and utilizes control signal and the state of determine switch 1231.Therefore; When main discharge control module 122 detects battery apparatus 110 when being in abnormality and producing control signal corresponding CS; The control of switch 1231 suspension control signal CS in the auxiliary discharge control module 123 and be in off-state, thus the electric connection between the power supply port 1312 of battery apparatus 110 and load 130 cut off, that is to say; The power supply port 1312 of load 130 can not sensed the voltage on the positive electrode of battery apparatus 110; Then it can force load 130 to quit work, thereby has cut off the electric connection between battery apparatus 110 and the load 130, promptly forces battery apparatus 110 to stop power supply to load 130.
In addition; As shown in Figure 1, in the present embodiment, auxiliary discharge control module 123 also can further comprise resistance 1232 and fuse 1233; It is connected between the power supply port 1312 of battery apparatus 110 and load 130 with switch 1231, thereby obtains electrical characteristics preferably.
Therefore; The battery management system 120 main discharge control modules 122 capable of using of the utility model are detected battery apparatus 110 and whether are in abnormality; And, battery apparatus 110 produces corresponding control signal CS when being in abnormality; Thereby force load 130 to quit work, to cut off the electric connection between battery apparatus 110 and the load 130.In addition; For fear of when main discharge control module 122 produces corresponding control signal CS; And load 130 situation of accepting battery apparatus 110 power supply that works on occurs, and the battery management system 120 of the utility model also further comprises auxiliary discharge control module 123, and it also receives main discharge control module 122 and produces corresponding control signal CS; Thereby cut off the electric connection between the power supply port 1312 of battery apparatus 110 and load 130, further forced load 130 to quit work.Therefore; Even main discharge control module 122 lost efficacy; Auxiliary discharge control module 123 in the battery management system 120 also can guarantee further when battery apparatus 110 is in abnormality, and it can force load 130 initiatively to cut off the electric connection between itself and the battery apparatus 110.
In addition; It will be understood by those skilled in the art that; The utility model can be when battery apparatus 110 need stop discharge to load 130; Can be abnormality with the setting state of battery apparatus 110, thereby utilize main discharge control module 122 and the auxiliary discharge control module 123 in the battery management system 120 and force load 130 initiatively to quit work, to cut off the electric connection between battery apparatus 110 and the load 130.And need releasing to stop discharge condition at battery apparatus 110; Be that battery apparatus 110 discharges when giving load 130 again; Can with the setting state of battery apparatus 110 non-abnormality; Therefore battery management system 120 can detect battery apparatus 110 and is in non-abnormality, thereby recovers the electric connection between battery apparatus 110 and the load 130 automatically.That is to say the utility model battery management system 120 capable of using and determine whether to make battery apparatus 110 to provide big electric current to load 130.
In sum, the utility model is to utilize the state of battery management system detecting battery apparatus and determine whether to make battery apparatus to supply power to load, and when battery apparatus is in abnormality, forces load initiatively to quit work, to reach the purpose of turn-offing big electric current.Simultaneously; Owing on the discharge loop between battery apparatus and the load control element is not set; Therefore in the unlatching of big electric current with when turn-offing; Big electric current can't pass through main discharge control module and the auxiliary discharge control module as control element, so the thermal losses of battery management system is less.And; The unlatching of big electric current and when turn-offing is a loaded work piece and initiatively quit work and open or cut off the electric connection between battery apparatus and the load realizing, does not exist control element to open and shutoff in big electric current moment down; Therefore can not produce heavy current impact; Then the battery management system of the utility model is simple in structure, cost is lower, and it adopts the duplicate protection of main discharge control module and auxiliary discharge control module, so its reliability is higher.
Though the utility model discloses as above with embodiment; Right its is not in order to limit the utility model; Any the utility model person of ordinary skill in the field; In spirit that does not break away from the utility model and scope, when can doing various changes and retouching, so the protection range of the utility model is as the criterion when looking appended the claim person of defining.