CN211455889U

CN211455889U - Power supply redistribution system, power system and device of multi-core series BMS system

Info

Publication number: CN211455889U
Application number: CN202020507531.0U
Authority: CN
Inventors: 吴晓东
Original assignee: Suzhou Sinlion Battery Co ltd
Current assignee: Changzhou Motianzhichu Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-09-08
Anticipated expiration: 2030-04-09

Abstract

The utility model discloses a many electric core cluster combination BMS system power redistribution system, driving system and device. The power redistribution system of the multi-core serial BMS system comprises a power taking module, a detection module and a control module; the battery pack comprises a first battery cell string and a second battery cell string which are connected in series; the detection module is matched with the first battery cell string; the control module is matched with the second battery cell string; the detection module and the control module are also respectively connected with the power taking module and are powered by the power taking module. By the utility model discloses, can avoid wherein different electric core power consumptive unbalance scheduling problem when realizing carrying out effective management to the group battery, make the group battery have better performance.

Description

Power supply redistribution system, power system and device of multi-core series BMS system

Technical Field

The utility model relates to a power Management System (BMS) System, in particular to many electric core cluster usefulness BMS System power redistribution System, driving System and device belong to the power Management System field.

Background

Currently, lithium batteries are widely used because of their advantages such as high capacity density, high output power, and fast charging and discharging speed. For devices such as electric vehicles, high requirements are imposed on power, capacity and the like of a power supply, and therefore, a plurality of battery cells are generally required to be combined to form a power battery pack. Further, BMS systems have been developed to manage the cells in a battery pack and serve as intelligent hubs for power battery packs and bridges for the battery packs to communicate with other electrical systems.

Referring to fig. 1, a conventional BMS system is shown, which generally includes two functional modules, namely a detecting module 10 and a control module 20, wherein one detecting module 10 is matched with a corresponding one of the battery cell strings 301 of the battery pack 30 and detects the operating state of each battery cell in the one battery cell string 301, and the control module 20 is matched with another corresponding battery cell string 302, on one hand, the operating state of each battery cell in the battery cell string 302 needs to be detected, and on the other hand, the detecting module is connected to control the detecting module. However, since the number of cells contained in each cell string in the battery pack is not completely the same, and the energy consumption of the control module 20 is higher, the energy consumption of each cell string in the battery pack is not uniform, and the use performance of the battery pack is finally affected.

Disclosure of Invention

A primary object of the utility model is to provide a many electric core series connection use BMS system power redistribution system and use to overcome prior art's not enough.

In order to achieve the purpose of the invention, the utility model adopts the following scheme:

the embodiment of the utility model provides a many electric core series connection BMS system power redistribution system, it includes getting electric module, detecting module and control module; the battery pack comprises a first battery cell string and a second battery cell string which are connected in series; the detection module is matched with the first battery cell string and can acquire information of each battery cell in the first battery cell string; the control module is matched with the second battery cell string and can acquire information of each battery cell in the second battery cell string, and meanwhile, the control module is also connected with the detection module; the detection module and the control module are also respectively connected with the power taking module and are powered by the power taking module.

In some embodiments, the first cell string and the detecting modules are both multiple, and each detecting module is disposed in cooperation with a corresponding one of the first cell strings.

In some embodiments, the plurality of detecting modules are connected to and powered by the power-taking module.

In some embodiments, the plurality of detection modules are all connected with the control module.

In some embodiments, the first cell string and the second cell string each include a plurality of cells arranged in series.

The embodiment of the utility model provides a still provides a device, including group battery, load equipment and the aforesaid any kind many electric core series connection BMS system power redistribution system.

Further, the load device may be a motor, an electronic device, an optoelectronic device, a mechanical device, and the like, and is not limited thereto. And the devices may be various electromechanical, electronic, etc. devices known in the art.

The embodiment of the utility model provides a still provide a driving system, including group battery, motor and the aforesaid any kind many electric core series connection BMS system power redistribution system.

Further, the power system may be applied to vehicles, ships, aerospace equipment, machining equipment, and the like, without being limited thereto.

Compare prior art, by the utility model provides a many electric core cluster combination BMS system power redistribution system can avoid wherein different electric core power consumption unbalanced problem when realizing carrying out effective management to the group battery, makes the group battery have better performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic diagram illustrating an operation principle of a conventional BMS system;

fig. 2 is a schematic diagram of a power redistribution system of a multi-cell serial BMS system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the technical solutions of the present invention are further described in detail below by way of examples and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connect" or "connect" as used herein includes both direct and indirect connections (connections), unless otherwise specified.

Referring to fig. 2, the system for redistributing power supply of a multi-core serial BMS system according to the embodiment includes a power-taking module 40, a detecting module 10 'and a control module 20'; the power taking module is connected with the battery pack 30 to form a power taking working loop.

The battery pack 30 includes a first battery cell string 301 and a second battery cell string 302 connected in series, the first battery cell string 301 and the detecting modules 10 'may be multiple, and each detecting module 10' is matched with a corresponding first battery cell string 301, and can collect information of each battery cell in the first battery cell string.

Each of the first cell string 301 and the second cell string 302 may include a plurality of cells arranged in series.

The control module 20 'is disposed in cooperation with the second cell string 302, and on one hand, the control module can collect information of each cell in the second cell string 302, and on the other hand, the control module is further connected to the detection module 10'.

The aforementioned "information of each cell" includes, but is not limited to, a remaining battery capacity, a terminal voltage and a temperature of the battery, a charge and discharge current, and the like.

The detecting module 10 'and the control module 20' are further connected to the power taking module 40, and are powered by the power taking module.

The power-taking module 40, the detecting module 10 'and the control module 20' may all adopt corresponding elements or modules known in the art. For example, the power-taking module 40 may be a voltage-dividing power-taking module, a current-coupling power-taking module, or a combination thereof. For another example, the detecting module 10' may include a current and/or voltage sensor, a temperature sensor, and the like, but is not limited thereto.

In this embodiment, the power taking module 40 is connected to the battery pack, the power taking module 40 obtains electric energy from the battery pack, and the power taking module 40 supplies power to the detecting modules 10 'and the control module 20', respectively, so that the problem of energy consumption imbalance of the cell strings due to different cell numbers in the cell strings and the fact that the first cell string 301 and the second cell string 302 supply power to the detecting modules 10 'and the control module 20' respectively can be avoided.

The multi-core tandem BMS system power redistribution system provided by this embodiment may be applied in a variety of fields, such as in a power system that includes a battery pack, a motor, and the multi-core tandem BMS system power redistribution system. By means of the power supply redistribution system of the multi-core series BMS system, the running performance of the power system can be improved.

Of course, the power redistribution system of the multi-core tandem BMS system provided in this embodiment may also be applied to other devices, such as battery powered electronic devices (e.g., laptop computers), heating equipment, marine vessels, aerospace devices, and the like.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A power supply redistribution system of a multi-core series BMS system is characterized by comprising a power taking module, a detection module and a control module; the battery pack comprises a first battery cell string and a second battery cell string which are connected in series; the detection module is matched with the first battery cell string and can acquire information of each battery cell in the first battery cell string; the control module is matched with the second battery cell string and can acquire information of each battery cell in the second battery cell string, and meanwhile, the control module is also connected with the detection module; the detection module and the control module are also respectively connected with the power taking module and are powered by the power taking module.

2. The multi-cell tandem BMS system power redistribution system of claim 1, wherein: the first battery cell string and the detecting modules are multiple, and each detecting module is matched with one corresponding first battery cell string.

3. The multi-die tandem BMS system power redistribution system of claim 2, wherein: the plurality of detection modules are connected with the power taking module and powered by the power taking module.

4. The multi-die tandem BMS system power redistribution system of claim 2, wherein: the plurality of detecting modules are all connected with the control module.

5. The multi-cell tandem BMS system power redistribution system of claim 1, wherein: the first battery cell string and the second battery cell string comprise a plurality of battery cells which are connected in series.

6. A power system comprising a battery pack and an electric machine, further comprising the multi-cell tandem BMS system power redistribution system of any one of claims 1-5.

7. An apparatus comprising a battery pack and a load device, further comprising the multi-cell tandem BMS system power redistribution system of any one of claims 1-5.