CN217469504U - Multi-battery branch parallel control device - Google Patents
Multi-battery branch parallel control device Download PDFInfo
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- CN217469504U CN217469504U CN202221134240.7U CN202221134240U CN217469504U CN 217469504 U CN217469504 U CN 217469504U CN 202221134240 U CN202221134240 U CN 202221134240U CN 217469504 U CN217469504 U CN 217469504U
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Abstract
The utility model relates to a many battery branch road parallel control device, including a plurality of battery cells and execution unit, execution unit and a plurality of battery cell are connected in order to constitute the parallelly connected setting of a plurality of charge-discharge branch roads of charge-discharge branch road, and the charge-discharge branch road is still including slave control unit and secondary main control unit, slave control unit with battery cell connects and gathers battery cell basic parameter, and secondary main control unit still with execution unit electric signal connection, the utility model discloses a branch road parallel control device is high-efficient, controls many branch road parallel system safely, when there is pressure differential between the branch road, can carry out corresponding charge-discharge adjustment by the execution unit of each branch road, carries out signal transmission by slave control unit, does not disturb other branch roads, when a branch road is out of order, need not whole system and need not wholly withdraw from, secondary main control corresponds the adjustment can; meanwhile, the design of the battery system can be well expanded, and when larger electric quantity is needed, only corresponding number of branches are needed to be added, so that the design is standardized.
Description
Technical Field
The utility model relates to a fill of group battery, the technical field that discharges, more specifically relate to a many battery branch road parallel control device.
Background
In a battery backup system and a battery energy storage system, such as a new energy electric vehicle and other comprehensive application systems which relate to a plurality of batteries, in order to improve the endurance time or improve the charging and discharging current, the parallel charging or discharging of a plurality of batteries or a plurality of battery packs is inevitable. When charging or discharging in parallel, if a simple circuit is directly connected in parallel, the current imbalance phenomenon occurs between each battery and the battery pack due to the difference of voltage among multiple batteries or between multiple battery packs. The following two methods are adopted in parallel
The multi-branch strong union system: the branches are firstly connected in parallel and then connected in series to form a branch circuit, and the branch circuits are then connected in parallel. When the branches are used in parallel, the branches are directly connected in parallel, the branches do not have a high-voltage execution unit and a control device, and the branch systems are controlled by a total high-voltage execution control unit and a control system after being connected in parallel; when the branches are connected in parallel, the voltage of the branches needs to be measured manually, the voltage difference between the branches is judged manually, whether the voltage difference is faulty or not is judged manually, and then the branches are connected in parallel manually, when the voltage difference is generated between the branches, the high-voltage branch can charge the low-voltage branch, instantaneous impact current can be generated, and high-voltage loop components and parts can be damaged or personal injury can be caused. When one branch circuit has a fault, the whole system needs to be wholly withdrawn from use; when the voltage among the branches is unbalanced, the manual mode is needed to supplement the power until the voltage is balanced. Causing great difficulty in the use and maintenance of the system. The multi-branch strong parallel system cannot realize the parallel use of more than 3 branches due to limited control and safety consideration of top-level main control unit management, and has poor expandability.
A multi-parallel-serial connection system: the batteries are firstly connected in parallel and then connected in series, the number of the batteries is large to form a large-capacity system, the number of the batteries is large, the batteries are connected in series, the batteries are limited by the cost and the volume of an electric part, the use current cannot be increased, and the batteries are only suitable for a small-current application scene.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a many battery branch road parallel control device has solved the poor problem of many battery branch road scalability.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the utility model provides a many battery branch road parallel control device, including a plurality of battery cells and execution unit, execution unit and a plurality of battery cell connects in order to constitute the charge-discharge branch road for switch on or break off the charge-discharge branch road at battery cell place, a plurality of the parallelly connected setting of charge-discharge branch road, the charge-discharge branch road still including following accuse unit and secondary main control unit, follow accuse unit with battery cell connects and gathers battery cell basic parameter, secondary main control unit includes two way CAN buses at least, secondary main control unit's CAN bus respectively with follow accuse unit and top level main control unit and be connected, secondary main control unit still with execution unit electric signal connection.
Preferably, the top main control unit at least comprises three CAN buses, and the CAN buses of the top main control unit are respectively connected with the external control unit, the secondary main control unit and the external charging equipment.
Preferably, the slave control unit comprises a calculation module, a storage module, a CAN bus transceiving module, a controller address coding module and a collection module.
Preferably, the secondary main control unit comprises a calculation module, a storage module, a CAN bus transceiver module, a controller address coding module, a collection module and a driving module, and the driving module is connected with the execution unit through an electric signal.
Preferably, the top-level main control unit comprises a calculation module, a storage module, a CAN bus transceiver module, a controller address coding module, an acquisition module, a driving module and a display module, wherein the display module displays the working mode of the whole battery system.
Preferably, the execution unit comprises a positive relay, a negative relay, a pre-charging relay and a pre-charging resistor.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses a many battery branch road parallel control device, including a plurality of battery cells and execution unit, execution unit and battery cell are connected in order to constitute the charge-discharge branch road, execution unit is used for switching on or breaking off the charge-discharge branch road at its place, the parallelly connected setting of a plurality of charge-discharge branch roads, every charge-discharge branch road is still including slave control unit and secondary main control unit, slave control unit is connected with battery cell and is gathered battery cell basic parameter and convey to secondary main control unit, secondary main control unit includes two way CAN buses at least, be connected with slave control unit and top level main control unit respectively, secondary main control unit still with execution unit electric signal connection simultaneously, control execution unit's action and then the charge-discharge condition of control charge-discharge branch road. The branch parallel control device of the utility model is a high-efficiency and safe control multi-branch parallel system, when pressure difference exists between branches, the execution unit of each branch can carry out corresponding charging and discharging adjustment, the slave control unit carries out signal transmission, other branches are not interfered, when one branch has a fault, the whole system does not need to be withdrawn integrally, and the secondary main control unit can carry out corresponding adjustment according to feedback information; meanwhile, the design of the battery system can be well expanded, and when larger electric quantity is needed, only corresponding number of branches are needed to be added, so that the design is standardized.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings;
fig. 1 is a schematic diagram of a connection state of an embodiment of the present invention;
FIG. 2 is a multi-branch parallel control device CAN topology;
FIG. 3 is an architecture diagram of a slave unit;
FIG. 4 is an architectural diagram of a secondary master unit;
fig. 5 is an architecture diagram of a top level master control unit.
Wherein the reference numerals are as follows:
1. a battery cell;
2. an execution unit; 21. a positive electrode relay; 22. a negative relay; 23. a pre-charging relay; 24. pre-charging a resistor;
3. a slave control unit;
4. a secondary master control unit; 41. A drive module;
5. a top level master control unit; 51. and a display module.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and fig. 2, the embodiment of the present invention includes a plurality of battery units 1 and an execution unit 2, each battery unit 1 is connected with an execution unit 2 to form a charging and discharging branch, the execution unit 2 is used to turn on or off the charging and discharging branch where the battery unit 1 is located, a plurality of charging and discharging branches are arranged in parallel, each charging and discharging branch further includes a slave control unit 3 and a secondary master control unit 4, the quantity of the slave control unit 3 is matched with the battery unit 1 to receive basic information parameters of each battery unit 1, such as current, voltage, temperature value and other information, and the basic information parameters are fed back to the secondary master control unit 4; the secondary main control unit 4 at least comprises two CAN buses, the CAN bus of the secondary main control unit 4 in the embodiment comprises two CAN buses, one CAN bus is connected with the secondary control unit 3 and receives information transmitted by the secondary control unit, the other CAN bus is connected with the top main control unit 5 and calculates the collected information and reports the information to the top main control unit 5, the top main control unit 5 at least comprises three CAN buses, the CAN bus of the top main control unit 5 in the embodiment comprises three CAN buses, one CAN bus is connected with the external control unit, the other CAN bus is connected with the secondary main control unit 4, and the other CAN bus is connected with the external charging equipment. Meanwhile, the secondary main control unit 4 is also in electric signal connection with the execution unit 2, and controls the execution unit 2 after receiving the instruction of the top main control unit 5, so as to control the state of each charging and discharging branch.
Referring to fig. 3, the slave control unit 3 includes a calculation module, a storage module, a CAN bus transceiver module, a controller address coding module, and an acquisition module. The acquisition module sends the acquired battery voltage temperature value to the calculation module for calculation and processing, and then the battery voltage temperature value is sent to the secondary main control unit 4 through the CAN bus transceiving module, and the important information is stored in the storage module according to rules. The controller address coding module identifies and stores own ID according to external input information, the ID can be stored in the storage module, and the ID is updated and stored when the input is changed. Each ID is unique, facilitating management by the secondary master unit 4.
Referring to fig. 4, the secondary main control unit 4 is composed of a calculation module, a storage module, a CAN bus transceiver module, a controller address coding module, an acquisition module, a driving module 41 and the like, the CAN bus transceiver module receives information transmitted from the control unit 3, the information acquired by the acquisition module is added, the information is calculated by the calculation module and then reported to the top main control unit 5, and important information is stored in the storage module according to rules. The controller address coding module identifies and stores own ID according to external input information, the ID can be stored in the storage module, and the ID is updated and stored when the input is changed. Each ID is unique, facilitating management by the top level master control unit 5. The driving module 41 is used for driving the execution unit 2 and managing branch joining or exiting. The secondary main control unit 4 is mainly used for reporting branch circuit states and executing top-level main control instructions.
Referring to fig. 5, the top main control unit 5 is composed of a calculation module, a storage module, a CAN bus transceiver module, an acquisition module, a driving module, etc., the CAN bus transceiver module receives information sent by the secondary main control unit 4, adds information acquired by the acquisition module and command/state information of the vehicle control unit, and forms basic system information and control information after calculation by the calculation module, the basic system information is reported to the overall control unit (external communication) and receives command of the vehicle control unit, the top main control unit 5 transmits the command to the secondary main control unit 4 through the CAN bus transceiver module, and important information is stored in the storage module according to rules. The driving module of the top-level main control unit 5 is used for driving other structures such as thermal management and the like, and the charging process can be managed through the charging management module. The display module 51 is used for displaying the working mode of the whole battery system and guiding the user to perform the operation, maintenance and repair.
The execution unit 2 is composed of a positive relay 21, a negative relay 22, a pre-charging relay 23 and a pre-charging resistor 24, the on-off and the charging and discharging current of the branch circuits are controlled, the addition and the exit of the branch circuits are executed, and a pre-charging loop formed by the pre-charging relay 23 and the pre-charging resistor 24 can reduce the circulating current of charging between the high-voltage branch circuit and the low-voltage branch circuit when the high-voltage branch circuit and the low-voltage branch circuit are connected in parallel.
When the charging and discharging device is used specifically, each charging and discharging branch is controlled by the secondary main control unit 4 of the branch, the secondary main control units 4 are controlled by the top main control unit 5, and the top main control unit 5 can control the on-off and current of each branch.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides a many battery branch road parallel control device, its characterized in that includes a plurality of battery cells and execution unit, execution unit and a plurality of battery cell connects in order to constitute the charge-discharge branch road for switch on or break off the charge-discharge branch road at battery cell place, a plurality of the parallelly connected setting of charge-discharge branch road, the charge-discharge branch road still including following accuse unit and secondary main control unit, follow accuse unit with battery cell connects and gathers battery cell basic parameter, secondary main control unit includes two way CAN buses at least, secondary main control unit's CAN bus is connected with following accuse unit and top level main control unit respectively, secondary main control unit still with execution unit electric signal connection.
2. The multi-cell branch parallel control device according to claim 1, wherein: the top level main control unit at least comprises three CAN buses, and the CAN buses of the top level main control unit are respectively connected with the external control unit, the secondary main control unit and the external charging equipment.
3. The multi-cell branch parallel control device according to claim 1, wherein: the slave control unit comprises a calculation module, a storage module, a CAN bus transceiving module, a controller address coding module and a collection module.
4. The multi-battery-branch parallel control device according to claim 3, wherein the secondary main control unit comprises a calculation module, a storage module, a CAN bus transceiver module, a controller address coding module, an acquisition module and a driving module, and the driving module is electrically connected with the execution unit.
5. The multi-cell branch parallel control device according to claim 1, wherein: the top-level main control unit comprises a calculation module, a storage module, a CAN bus transceiving module, an acquisition module, a driving module, a charging management module and a display module, wherein the display module displays the working mode of the whole battery system.
6. The multi-cell branch parallel control device according to claim 1, wherein: the execution unit comprises a positive relay, a negative relay, a pre-charging relay and a pre-charging resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221134240.7U CN217469504U (en) | 2022-05-12 | 2022-05-12 | Multi-battery branch parallel control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221134240.7U CN217469504U (en) | 2022-05-12 | 2022-05-12 | Multi-battery branch parallel control device |
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| Publication Number | Publication Date |
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| CN217469504U true CN217469504U (en) | 2022-09-20 |
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| CN202221134240.7U Active CN217469504U (en) | 2022-05-12 | 2022-05-12 | Multi-battery branch parallel control device |
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- 2022-05-12 CN CN202221134240.7U patent/CN217469504U/en active Active
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