All fill device
This utility model relates to one and all fills device, it is possible to make the electricity of each battery in battery module to be on average full of, to improve the service efficiency of battery module and to increase the service life.
Battery management system (BatteryManagementSystem, BMS) for the requisite core system of electric vehicle, battery module is carried out security monitoring and management by primary responsibility, to improve service efficiency and the reliability of battery module, and extends the service life of battery module. Battery management system mainly includes a battery module managing unit (BatteryManagementUnit, BMU) and a battery module control unit (BatteryControlUnit, BCU). Relevant information can be transmitted by various communications protocol between battery module managing unit (BMU), communicate information to battery module control unit (BCU), battery module to be managed, warns and safety protection control.
After electric vehicle starts and makes the battery module repeated charge of series connection, it will causing the phenomenon having voltage differences, capacity uneven between battery, this phenomenon can allow the service efficiency of battery module be deteriorated, and will also result in the lost of life of battery module. Battery module managing unit (BMU) is except can monitoring the state of battery, it is also possible to carry out active or passive type battery equilibrium, compensates slight battery and does not mate, to extend the service life of battery module.
Balance control circuit in battery module managing unit (BMU) is broadly divided into passive type balance and active balance two kinds. Wherein, the energy of the battery of high voltage is directly done work by passive type balance on load resistance, converts unnecessary energy to heat and consumes, and this kind of method is only applicable to suppress the voltage climbs of the strongest battery under charge mode, for restriction power attenuation. It is for the combination of multiple battery modules, after one of them battery is fully charged, namely system can show charging complete, but actually still there may be multiple battery still in the state that electricity is not enough, therefore, to make the electricity of each battery on average be full of, a lot of energy namely can be consumed.
The excess energy of the battery of multiple high voltages is carried out energy and moves by active balance one by one, and the battery relatively low to other voltages uses. But when regulating the charge volume of each battery with multiple switching circuitry, too much switch can reduce reliability. Switch, once the phenomenon that is short-circuited, namely can cause battery to overcharge impaired, even catching fire. Therefore, the management mode of above two battery equilibrium, its space still had much room for improvement in balance efficiency, manufacturing cost and reliability.
Utility model content
In view of this, in order to provide a kind of structure being different from prior art, and improving disadvantages mentioned above, inventor amasss experience for many years and constantly researches and develops improvement, then has generation of the present utility model.
Main purpose of the present utility model is in that providing one, with charger, at least one battery module is carried out string fills, and the battery electricity in each battery module is monitored by battery monitoring unit, device is all filled again with what the battery that electricity is too low was charged by charhing unit respectively, need to install active or passive type cell balancing circuit additional solving existing battery module, thus increasing manufacturing cost, cannot effectively reaching balance efficiency and the problem of safety reliability deficiency, and then balance efficiency can be effectively improved to increase the service life, to reduce cost, and guarantee to use safety.
In order to achieve the above object, what this utility model provided all fills device at least one battery module of connection, and battery module has multiple battery, all fills device and includes multiple charhing unit and multiple battery monitoring unit. Wherein, multiple charhing units are electrically connected with multiple battery respectively; Multiple battery monitoring unit and multiple battery are electrically connected, and to monitor the electricity of each battery respectively, and multiple battery monitoring unit is electrically connected with multiple charhing units respectively, respectively corresponding battery are charged controlling multiple charhing unit.
During enforcement, this utility model also includes a housing, multiple charhing units and multiple battery monitoring unit and is contained in housing.
During enforcement, the plurality of charhing unit is serially connected.
During enforcement, this utility model also includes first control unit, and control unit such as grade is connected with multiple charhing units, with the voltage of average multiple charhing units such as gradeization.
For further appreciating that the present invention, below lift preferred embodiment, coordinate graphic, figure number, the concrete constitution content of the present invention and effect of reaching thereof are described in detail as follows.
Accompanying drawing explanation
Fig. 1 all fills, for what this utility model provided, the three-dimensional appearance schematic diagram that device connects the preferred embodiment of battery module;
Fig. 2 all fills, for what this utility model provided, the circuit box schematic diagram that device connects the preferred embodiment of battery module.
Description of reference numerals: 1-all fills device; 2-housing; 21-the first link; 3-charhing unit; 4-etc. change control unit; 5-battery monitoring unit; 51-monitoring means; 52-control unit; 6-battery module; 61-the second link; 62-battery; 7-cable; 8-charger.
Detailed description of the invention
The utility model discloses one and all fill device, wherein, this all fills device and connects at least one battery module, has multiple battery side by side in battery module.
As shown in Figure 1 and Figure 2, the preferred embodiment all filling device 1 that this utility model provides includes a housing 2, multiple charhing unit 3, first control unit 4 and multiple battery monitoring unit 5. Wherein, this housing 2, substantially in rectangular shape, has an accommodation space inside it, with hold and position multiple charhing unit 3, multiple battery monitoring unit 4 and etc. change control unit 5. The one side of housing 2 is provided with the first link 21. The one side of battery module 6 is provided with the second link 61, connects via the joint at cable 7 two ends, all fills device 1 and is electrically connected with battery module 6.
Multiple charhing units 3 are serially connected, and control unit 4 is changed in multiple charhing unit 3 connection etc., by the voltage of average multiple charhing units 3 such as control unit such as gradeization 4 gradeization.The positive and negative electrode of multiple charhing units 3 concentrates on the first link 21 of housing 2, connection via cable 7, make multiple charhing unit 3 be electrically connected with the multiple battery 62 in battery module 6 respectively, and make the positive and negative electrode correspondence of a charhing unit 3 connect the positive and negative electrode of a battery 62.
This battery monitoring unit 5 has monitoring means 51 and a control unit 52. One of them battery 62 in the corresponding multiple battery 62 of one of them battery monitoring unit 5 in multiple battery monitoring unit 5. Multiple battery monitoring unit 5 are electrically connected with multiple battery 62 respectively, to monitor the electricity of each corresponding battery 62 respectively. Multiple control units 52 are electrically connected with multiple charhing units 3 respectively, corresponding battery 62 are charged controlling multiple charhing unit 3 respectively.
Therefore, this utility model has the advantage that
1, battery module is carried out string with charger and fills by this utility model, and monitor the electricity of battery in each battery module by battery monitoring unit, respectively the battery that electricity is too low is charged respectively with charhing unit again, therefore, not only can be effectively improved balance efficiency to extend the service life of battery module, and owing to battery module need not install active or passive type cell balancing circuit again additional, thus production cost can be reduced, and guarantee to use safety.
2, multiple battery that electricity is too low are charged respectively respectively by this utility model with multiple charhing units, then through the voltage being changed average multiple charhing units by control unit such as gradeization etc., therefore, charge efficiency can be effectively improved and extend the service life of charhing unit.
In sum, according to content disclosed above, this utility model really can reach intended purpose, there is provided a kind of balance efficiency that can not only be effectively improved to extend the service life of battery module and charhing unit, production cost can be reduced, and can ensure that all filling device and using this all to fill the charging battery module method of device of use safety, the value that great industry utilizes.