CN215771326U - Centralized modular battery architecture - Google Patents
Centralized modular battery architecture Download PDFInfo
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- CN215771326U CN215771326U CN202121505976.6U CN202121505976U CN215771326U CN 215771326 U CN215771326 U CN 215771326U CN 202121505976 U CN202121505976 U CN 202121505976U CN 215771326 U CN215771326 U CN 215771326U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a centralized modular battery architecture, which comprises a first battery module, a second battery module, a battery cut-off control unit and a battery management system, wherein the first battery module is connected with the second battery module through a first cable; the capacity of the first battery module is half of that of the second battery module; the nominal voltage of the first battery module is twice that of the second battery module; a preset number of the first battery modules are connected in series to form a first high-voltage loop; the second battery modules with twice of the preset number are connected in series to form a second high-voltage loop; the plurality of first high-voltage loops and/or the plurality of second high-voltage loops are connected in parallel with the battery cut-off control unit and the battery management system to form battery packs with different energies; the first battery module and the second battery module are the same in size. The battery pack with different energy and different capacity configurations can be realized, the requirements of various vehicle types under a battery framework are met, and the development cost and the development period are reduced.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a centralized modular battery architecture.
Background
The new energy automobile becomes an important direction for transformation and upgrading of automobile industry in China, when a pure electric exclusive automobile framework is developed, the framework scheme of the battery pack has an extremely important position and is one of key cores for whole automobile framework development, the good battery framework scheme has high expandability and is suitable for various platform automobile types, the development cost and the material cost of the platform automobile types are greatly reduced, and meanwhile, the development period can be shortened on the premise of ensuring the quality and the reliability.
The existing battery pack technology is mainly to connect the same battery cell in parallel and then in series to form modules with the same parallel number, then to connect all the modules in series to form a high-voltage system, and then to integrate the high-voltage system, a battery cut-off control unit BDU, a battery management system BMS, a cooling system part and the like into a sealed shell.
Such an integration approach has limited scalability, is often not fully compatible for matching different vehicle models and configurations, and may require a new battery pack to be developed, thereby incurring a portion of new development costs and development cycles.
Disclosure of Invention
Therefore, a centralized modular battery architecture needs to be provided to solve the problem
In order to achieve the above object, the present invention provides a centralized modular battery architecture, which includes a first battery module, a second battery module, a battery cut-off control unit, and a battery management system;
the capacity of the first battery module is half of that of the second battery module;
the nominal voltage of the first battery module is twice that of the second battery module;
a preset number of the first battery modules are connected in series to form a first high-voltage loop;
the second battery modules with twice of the preset number are connected in series to form a second high-voltage loop;
the plurality of first high-voltage loops and/or the plurality of second high-voltage loops are connected in parallel with the battery cut-off control unit and the battery management system to form battery packs with different energies;
the first battery module and the second battery module are the same in size.
Further preferably, the first battery module and the second battery module are mounted in the same manner.
Further optimizing, further comprising a pre-discharge differential pressure balancing loop;
the pre-discharge differential pressure balancing circuit is arranged between the first high-voltage circuit and the second high-voltage circuit.
Further preferably, the pre-discharge differential pressure balancing circuit is arranged in the battery cut-off control unit.
Further optimizing, the first high-voltage loop and the second high-voltage loop are both internally provided with a battery collecting plate.
Further preferably, a first high voltage loop is connected to a battery cut-off control unit and a battery management system to form a double energy battery pack.
Further optimized, the two second high-voltage loops are connected with a battery cut-off control unit and a battery management system to form a double-energy battery pack.
Further preferably, a first high voltage loop and a second high voltage loop are connected in parallel to a battery cut-off control unit and a battery management system to form a triple energy battery pack.
Further optimized, the four second high-voltage loops are connected to a battery cut-off control unit and a battery management system to form a quadruple energy battery pack.
Different from the prior art, according to the technical scheme, the two different modules, namely the first battery module and the second battery module, are respectively connected in series to form the two high-voltage loops of the same voltage platform, and the battery packs with different energy and different capacity configurations can be realized through different parallel combinations between the two high-voltage loops, so that the requirements of various vehicle types under a battery framework are met, the development cost and the development period are reduced, only the two modules need to be developed, the battery pack can be suitable for all vehicle types under the framework, and the cost and the development period caused by repeated development are greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a centralized modular battery rack according to an embodiment;
fig. 2 is a schematic structural diagram of a single-energy battery pack according to an embodiment;
fig. 3 is a schematic structural diagram of a double energy battery pack according to an embodiment;
FIG. 4 is a schematic diagram of one embodiment of a triple energy battery pack;
FIG. 5 is a schematic diagram of a quad-energy battery pack according to an embodiment;
fig. 6 is another schematic structural diagram of a triple-energy battery pack according to an embodiment.
Description of reference numerals:
110. a first battery module 120, a second battery module 130, a battery cut-off control unit 140, and a battery management system; 210. and a pre-discharge differential pressure balancing loop.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the present embodiment provides a centralized modular battery architecture, which includes a first battery module 110, a second battery module 120, a battery cut-off control unit 130 and a battery management system 140;
the capacity of the first battery module 110 is half of the capacity of the second battery module 120;
the nominal voltage of the first battery module 110 is twice the nominal voltage of the second battery module 120;
a preset number of the first battery modules 110 are connected in series to form a first high-voltage loop;
twice the preset number of the second battery modules 120 are connected in series to form a second high-voltage loop;
the plurality of first high-voltage loops and/or the plurality of second high-voltage loops are connected in parallel with the battery cut-off control unit 130 and the battery management system 140 to form battery packs with different energies;
the first battery module 110 and the second battery module 120 have the same size.
The capacity of the first battery module 110 is set to be half of the capacity of the second battery module 120, the nominal voltage of the first battery module 110 is set to be twice of the nominal voltage of the second battery module 120, so that the energy between the first battery module 110 and the second battery module 120 is the same, a preset number of the first battery modules 110 are connected in series to form a first high-voltage loop, and a preset number of the second battery modules 120 are connected in series to form a second high-voltage loop, so that the same voltage platform is arranged between the first high-voltage loop and the second high-voltage loop, and battery packs with different energy sizes can be formed by connecting a plurality of the first high-voltage loops and a plurality of the second high-voltage loops in parallel to the battery cutoff control unit 130 and the battery management system 140. The system can easily realize various electric quantity configurations and meet the requirements of various vehicle types under the framework, such as mini vehicles, medium and small vehicles, commercial vehicles and the like. The development cost and the development period are reduced, two modules are developed in the early stage, the system can be suitable for all vehicle types under the framework, and the cost and the development period caused by repeated development are greatly reduced. And compare in adopting a battery module to make up into different energy battery package, if in the high-voltage circuit of double energy, adopt the same module still to connect in parallel, the circuit is more complicated like this, and the sampling channel also can double in addition, and the cost also can increase, and two kinds of high-voltage circuit that constitute through the series connection of two kinds of different battery modules have the same voltage platform can reduce the circuit complexity. In order to facilitate the installation and the matching between the first battery module 110 and the second battery module 120, the first battery module 110 and the second battery module 120 have the same size. The battery packs with different energies formed by the first high-voltage loop and the second high-voltage loop have the same width dimension (W) and height dimension (H), namely the combined battery packs have fixed width dimension (W) and height dimension (H), and according to the energy difference of the battery packs, the length dimension of the battery packs changes with the number of the high-voltage components of the first high-voltage loop and the second high-voltage loop correspondingly by the change of n x delta L. In other embodiments, the size between the first battery module 110 and the second battery module 120 may be different, for example, the first battery module 110 and the second battery module 120 have the same length and height, but the width is different, and the size between the first battery module 110 and the second battery module 120 may be set according to actual practice.
In this embodiment, a first high voltage circuit is formed by connecting two first battery modules 110 in series, and a second high voltage circuit is formed by connecting four second battery modules 120 in series, and a battery collecting plate is disposed in each of the first high voltage circuit and the second high voltage circuit. Is connected to a battery cut-off control unit 130 and a battery management system 140 through a first high voltage loop to form a double energy battery pack. Two second high voltage loops are connected to a battery cut-off control unit 130 and a battery management system 140 to form a double energy battery pack. A first high voltage circuit and a second high voltage circuit are connected in parallel to a battery cut-off control unit 130 and a battery management system 140 to form a triple energy battery pack. Four second high voltage loops are connected to a battery cut-off control unit 130 and a battery management system 140 to form a quadruple energy battery pack. The battery pack with four types of energy can be realized, and the battery pack is suitable for different vehicle types.
In the present embodiment, for convenience of installation, the first battery module 110 and the second battery module 120 are installed in the same manner. In other embodiments, the first battery module 110 and the second battery module 120 may be mounted differently.
In the embodiment, in order to consider the problem that the pressure difference between the first high-pressure loop and the second high-pressure loop is inconsistent in the process of maintenance or assembly, a pre-discharge pressure difference balancing loop 210 is further included; the pre-discharge differential pressure balancing circuit 210 is disposed between the first high voltage circuit and the second high voltage circuit. The pre-discharge differential pressure balancing circuit 210 prevents the generation of a large transient current due to an excessive differential pressure. Wherein the pre-discharge differential pressure balancing circuit 210 is disposed within the battery cut-off control unit 130. In other embodiments, the pre-discharge differential pressure balancing circuit 210 is a stand-alone device by being installed in an assembly tool.
It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (9)
1. A centralized modular battery architecture is characterized by comprising a first battery module, a second battery module, a battery cut-off control unit and a battery management system;
the capacity of the first battery module is half of that of the second battery module;
the nominal voltage of the first battery module is twice that of the second battery module;
a preset number of the first battery modules are connected in series to form a first high-voltage loop;
the second battery modules with twice of the preset number are connected in series to form a second high-voltage loop;
the plurality of first high-voltage loops and/or the plurality of second high-voltage loops are matched with the battery cut-off control unit and the battery management system to form battery packs with different energies;
the first battery module and the second battery module are the same in size.
2. The centralized modular battery architecture of claim 1, wherein the first battery module and the second battery module are mounted in the same manner.
3. The centralized modular battery architecture of claim 1, further comprising a pre-discharge differential pressure balancing loop;
the pre-discharge differential pressure balancing circuit is arranged between the first high-voltage circuit and the second high-voltage circuit.
4. The centralized modular battery architecture of claim 3, wherein the pre-discharge differential pressure balancing loop is disposed within a battery shutdown control unit.
5. The centralized modular battery architecture of claim 1, wherein a battery capture board is disposed within each of the first high voltage loop and the second high voltage loop.
6. The centralized modular battery architecture of claim 1, wherein a first high voltage loop is connected to a battery cut-off control unit and a battery management system to form a double energy battery pack.
7. The centralized modular battery architecture of claim 1, wherein two second high voltage loops are connected to a battery cut-off control unit and a battery management system to form a double energy battery pack.
8. The centralized modular battery architecture of claim 1, wherein a first high voltage loop and a second high voltage loop are connected in parallel to a battery cut-off control unit and a battery management system to form a triple energy battery pack.
9. The centralized modular battery architecture of claim 1, wherein four second high voltage loops are connected to a battery cut-off control unit and a battery management system to form a quad-energy battery pack.
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| CN202121505976.6U CN215771326U (en) | 2021-07-02 | 2021-07-02 | Centralized modular battery architecture |
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| CN202121505976.6U CN215771326U (en) | 2021-07-02 | 2021-07-02 | Centralized modular battery architecture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113352906A (en) * | 2021-07-02 | 2021-09-07 | 云度新能源汽车有限公司 | Centralized modular battery architecture |
| CN114590138A (en) * | 2022-03-08 | 2022-06-07 | 法法汽车(中国)有限公司 | Electric vehicle battery pack system |
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2021
- 2021-07-02 CN CN202121505976.6U patent/CN215771326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113352906A (en) * | 2021-07-02 | 2021-09-07 | 云度新能源汽车有限公司 | Centralized modular battery architecture |
| CN114590138A (en) * | 2022-03-08 | 2022-06-07 | 法法汽车(中国)有限公司 | Electric vehicle battery pack system |
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