CN210011585U

CN210011585U - Modularization power assembly integration chassis

Info

Publication number: CN210011585U
Application number: CN201920683700.3U
Authority: CN
Inventors: 王文龙; 陆文文; 文鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-02-04
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses a modularization power assembly integration chassis, including battery module, BMS, power module, total controller, common mode reactor, battery module and BMS integration are installed in structure A in an organic whole, power module and total controller are installed in structure B, common mode reactor, structure A, structure B are installed in structure C. The battery module is connected with the power modules through the electric connecting piece, the power modules are connected through the electric connecting piece, a first heat dissipation assembly is arranged in the power modules, the master controller controls the power modules to be switched on and off through the electric connecting piece, and a second heat dissipation assembly is arranged inside the structural piece C. Integrate battery, BMS, motor drive ware, OBC and BDU in an organic whole, reduced electric automobile driving system's complexity, production and maintenance cost by a wide margin, can effectively improve the utilization ratio and the duration of car inner space.

Description

Modularization power assembly integration chassis

Technical Field

The utility model relates to a modularization power assembly integration chassis belongs to new forms of energy power assembly technical field.

Background

In recent years, with the vigorous development of the new energy electric automobile industry, the vehicle-mounted electronic equipment tends to be miniaturized, integrated and high in power density. However, batteries, a BMS, a motor driving unit, a DC/DC unit, a PDU unit, an OBC charging unit, and the like in the pure electric vehicle power assembly system industry are mostly designed individually and installed in the entire vehicle through structural combination, resulting in low energy density, complex control, difficult installation and maintenance, low system reliability and higher cost of the power assembly system, and are not suitable for the development trends of modularization, integration, platformization, light weight, intellectualization, and the like of the entire vehicle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modularization power assembly integration chassis to solve among the prior art power assembly system energy density low, control complicacy, installation maintenance difficulty, the low just higher defect of cost of system reliability.

The utility model provides a modularization power assembly integration chassis, includes battery module, BMS, power module, total controller, common mode reactor, battery module and BMS integration are installed in structure A in an organic whole, power module and total controller are installed in structure B, common mode reactor, structure A, structure B are installed in structure C, the battery module passes through electric connecting piece and is connected with power module, connect through electric connecting piece between the power module, be equipped with first radiator unit in the power module, total controller passes through switching on and shutting off of electric connecting piece control power module, the inside second radiator unit that is equipped with of structure C.

Preferably, a first positive electrode port, a first negative electrode port and a first battery signal port are led out of the battery module, the battery module is formed by connecting a plurality of single batteries in a U-shaped series end to end mode, the single batteries are connected through an electric connecting piece, and the BMS is integrated in the electric connecting piece.

Preferably, the power module externally leads out a second positive electrode port, a second negative electrode port, a second battery signal port, a first control signal port and an alternating current port, and the second positive electrode port, the second negative electrode port and the second battery signal port are respectively and correspondingly connected with the externally led first positive electrode port, the externally led first negative electrode port and the externally led first battery signal port of the battery module.

Preferably, the alternating current ports are an alternating current first port and an alternating current second port, the alternating current second port is connected with the alternating current first ports of the adjacent submodules, each bridge arm is formed by connecting a plurality of submodules in series, the alternating current first port of the first submodule and the alternating current second port of the last submodule in the bridge arm are used as system alternating current electrical ports to be connected with two ends of a common mode reactor, a middle port of the common mode reactor is connected to the motor and an alternating current charging port, and the alternating current first port of the first module in the upper bridge arm and the alternating current second port of the tail module of the lower bridge arm are used as system direct current bus ports to be connected with a DC/DC and a direct current charging port.

Preferably, the master controller externally leads out a sampling port and a second control signal port, and the second control signal port is connected with the first signal ports of the plurality of power modules through an electric connecting piece.

Preferably, the common mode reactor externally leads out a reactor alternating current one port, a reactor alternating current two port and a middle port, and the common mode reactor adopts two single reactors to share one iron core.

Preferably, the electrical connector is a PCB, a copper bar, a lead and an optical fiber.

Preferably, an installation space for installing the high power box, the DC/DC module, the circuit breaker and the fuse is preset in the structural member C.

Compared with the prior art, the utility model discloses the beneficial effect who reaches: the power assembly integrated chassis system adopts a modular multilevel converter topology, the converter output level number is in direct proportion to the self power module number, and the power assembly integrated chassis system has the operating characteristics of multilevel output, low harmonic content, low switching frequency and low loss. Each power module independently manages and controls each battery module, energy management among the battery modules and charging/discharging functions of an alternating current side/direct current side are added, good expansibility is achieved, complexity of system design is reduced, production and maintenance cost of an electric automobile power system is greatly reduced, and utilization rate and cruising ability of space in an automobile can be effectively improved.

Drawings

FIG. 1 is a schematic view of an integrated structure of a power assembly of the present invention;

fig. 2 is a schematic structural diagram of a power module of the present invention;

FIG. 3 is a schematic structural view of a powertrain control system of the present invention;

fig. 4 is a schematic structural view of a battery module according to the present invention;

FIG. 5 is a schematic structural diagram of the general controller of the present invention;

fig. 6 is a schematic diagram of the common mode reactor of the present invention;

fig. 7 is a partially enlarged schematic view of the heat dissipation assembly of the present invention;

fig. 8 is a partial enlarged view of the phase sequence of the power module voltage a according to the present invention.

In the figure: 1. a battery module; 11. a first positive port; 12. a first negative port; 13. a first battery signal port; 14. a single battery; 15. a BMS; 16. an electrical connector; 2. a power module; 21. a second positive port; 22. a second negative port; 23. a second battery signal terminal; 24. an alternating current port; 241. a first port for communication; 242. an AC second port; 25. a first control signal port; 26. a system ac electrical port; 261. an upper alternating current electrical port; 262. a lower alternating current electrical port; 27. a DC bus port 271, a DC bus positive port; 272. a DC bus negative port; 3. a master controller; 31. a sampling port; 32. a second control signal port; 4. a common mode reactor; 41. a reactor AC port; 42. a reactor alternating current two-port; 43. an intermediate port; 5. a first heat dissipation assembly; 6. a structural member A; 7. a structural member B; 8. a structural member C; 10. and a second heat dissipation assembly.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-8, a modularized power assembly integrated chassis is disclosed, such as the modularized power assembly integrated chassis shown in fig. 1, which comprises a battery module 1, a BMS15, a power module 2, a general controller 3, and a common mode reactor 4, wherein the battery module 1 and the BMS15 are integrally installed in a structural component a6, the power module 2 and the general controller 3 are installed in a structural component B7, the common mode reactor 4, the structural component a6, and the structural component B7 are installed in a structural component C8, the battery module 1 is connected with the power module 2 through an electrical connector, the power modules 2 are connected through an electrical connector 16, a first heat dissipation assembly 5 is arranged in the power module 2, the general controller 3 controls the power module 2 to be turned on and off through the electrical connector 16, a second heat dissipation assembly 10 is arranged in the structural component C8, power module 2 is all installed on first radiator unit 5 two sides, second radiator unit 10 is integrated in structure C8, and the both sides of battery cell 14 are hugged closely to the inserted sheet.

Specifically, as shown in fig. 4, a first positive electrode port 11, a first negative electrode port 12 and a first battery signal port 13 are led out of the battery module 1, the battery module 1 is formed by connecting a plurality of unit batteries 14 in an end-to-end "U" shape in series, the unit batteries 14 are connected by an electrical connector 16, the BMS15 is integrated in the electrical connector 16, the BMS monitors the working state of the battery module 1, the installation space of the BMS is saved, and the shape and the capacity of the battery module 1 can be changed arbitrarily by the number of the unit batteries 14.

Specifically, as shown in fig. 2 and fig. 3, a second positive port 21, a second negative port 22, a second battery signal port 23, a first control signal port 25, and an ac port 24 are externally led out from the power module 2, the second positive port 21, the second negative port 22, and the second battery signal port 23 are respectively connected to the first positive port 11, the first negative port 12, and the first battery signal port 13 externally led out from the battery module, the power module 2 controls the charging and discharging processes of the battery module 1, and performs active equalization and fault isolation, and when the battery between the battery modules 1 is unbalanced, the power externally output by the power module 2 corresponding to the battery module 1 is adjusted under the condition that the externally output power of the system is not changed, so that the active energy equalization of the battery is realized, and at the same time, the battery module 1 provides energy for the power module 2.

Specifically, the ac port 24 is an ac first port 241 and an ac second port 242, the ac second port 242 is connected to the ac first port 241 of the adjacent sub-modules, each bridge arm is formed by connecting a plurality of sub-modules in series, the ac first port 241 of the first sub-module and the ac second port 242 of the last sub-module in a bridge arm are used as the system ac electrical port 26 to be connected to two ends of the reactor 4, the middle port 43 of the common mode reactor 4 is connected to the motor and the ac charging port, the ac first port 241 of the first module in the upper bridge arm and the ac second port 242 of the last sub-module in the lower bridge arm are used as the system DC bus port 27 to be connected to the DC/DC and DC charging ports, the system ac electrical port 26 realizes the functions of motor driving, ac fast charging, ac V2V and ac V2G in the finished automobile, and the DC bus port 27 realizes the power control on the ac/DC side and the power supply of the auxiliary equipment in, Direct current fast charging, direct current V2V, direct current V2G. Meanwhile, the power grade and capacity of the system are adjusted by changing the number of the power modules 2 connected in series in the bridge arm or changing the number of the single batteries connected in series in the battery module, so that the system is suitable for new energy electric vehicles with different power grades, and the utilization rate and the cruising ability of the space in the vehicle are effectively improved.

As shown in fig. 3, there are 24 power modules 2 and a master controller 3, each 8 power modules 2 form a phase, each phase is composed of an upper and a lower bridge arm, and the upper and the lower bridge arms are respectively composed of 4 power modules 2. The specific connection mode between the power modules 2 is as follows: the ac second port 242 of the power module 2a1 is connected to the ac first port 241 of the adjacent power module 2a2, the ac second port 242 of the power module 2a2 is connected to the ac first port 241 of the power module 2A3, the ac second port 242 of the power module 2A3 is connected to the ac first port 241 of the power module 2a4, the ac second port 242 of the power module 2a5 is connected to the ac first port 241 of the power module 2A6, the ac second port 242 of the power module 2A6 is connected to the ac first port 241 of the power module 2a7, and the ac second port 242 of the power module 2a7 is connected to the ac first port 241 of the power module 2 A8.

The ac first port 241 of the power module 2a1 is used as the system DC bus positive port 271, the ac second port 242 of the power module 2A8 is used as the system DC bus negative port 272, and the DC bus port 27 is connected to the DC/DC and DC charging ports; the ac second port 242 of the power module 2a4 serves as an ac electrical port 261 on the system a phase, the ac first port 241 of the power module 2a5 serves as a ac electrical port 262 on the system a phase, the ac electrical port 261 and the ac electrical port 262 on the a phase are respectively connected to the reactor ac first port 41 and the reactor ac second port 42, and the intermediate port 43 of the common mode reactor 4 is connected to the motor and the ac charging port. The system dc bus port 27 and the system ac electrical port 26 exchange power externally.

The phase B is the same as the phase C, the phase A is the same as the phase C, A, B, C phases of direct current bus positive electrode ports 271 are connected together in parallel, and a direct current bus negative electrode port 272 is connected together in parallel.

Specifically, as shown in fig. 5, a sampling port 31 and a second control signal port 32 are externally led out of the master controller 3, and the second control signal port 32 is connected with the first control signal ports 25 of the plurality of power modules 2 through the electrical connector 16 to control the on and off of the power modules 2, so as to control the rotation of the motor, the active equalization of the battery, the fault isolation, the fast charging, the power supply of the auxiliary power supply, and the like.

Specifically, as shown in fig. 6, a reactor ac one port 41, a reactor ac two port 42, and a middle port 43 are externally led out of the common mode reactor 4, and the common mode reactor 4 uses two single reactors to share one iron core, thereby greatly reducing the reactor volume and the cost.

Specifically, the electrical connector can be a PCB, a copper bar, a lead and an optical fiber, and the electrical connector adopts the PCB, the copper bar, the lead and the optical fiber to simplify wiring harnesses in the vehicle, enhance communication speed between modules and reduce complexity of system design.

Specifically, the installation space for installing the high-voltage distribution box, the DC/DC module, the circuit breaker and the fuse wire is preset in the structural part C8, parts such as OBC, PDU, DC/DC, BDU, a motor driver, BMS and a battery are integrated with the chassis, the complexity of the design of an electric automobile power system is greatly reduced, the production and maintenance cost is greatly reduced, and the utilization rate and the cruising ability of the space in the automobile can be effectively improved.

The working principle is as follows: the battery module 1 is connected with a first positive electrode port 21 and a first negative electrode port 22 of the power module 2 after a plurality of single batteries are connected in series, the power module 2 is used as a core component of the power chassis, the power assembly integrated system adopts a multi-level converter topological structure, a three-phase system alternating current electric port 26 and a direct current bus port 27 are led out externally and connected with an external load or a power supply through a switch and a protection device (such as a contactor, a fuse and the like), and the master controller 3 controls the output state of electric energy by controlling the on-off of a power electronic switch device in the power module 2, so that the battery energy of the power assembly integrated chassis is converted into energy required by the load (energy is provided outwards) or the external input electric energy is converted into energy required by the battery module 1 (energy is stored internally). BMS15 in the integrated power chassis manages battery module 1 and the series connection single cell 14 in the battery module 1, has realized the initiative equilibrium and the trouble excision function between battery module 1, monitors and the passive balanced function to the series connection single cell 14 in the battery module 1 simultaneously, ensures the safe and reliable operation of battery. The utility model discloses a many level converter topological structure who adopts, multiport output function has, the motor drive converter, the direct current charges the mouth, the different ports of the same physical circuit of mouth and auxiliary power source port sharing are charged in the alternating current, possess voltage current regulation ability, V2V "to charging" function between super large power charging and the different electric automobile has been realized, electric automobile's cost and volume have been reduced, can effectively improve the utilization ratio and the duration of car space, realize OBC, PDU, DC/DC, BDU, motor driver, the integration of BMS function.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The integrated chassis of the modular power assembly is characterized by comprising a battery module (1), a BMS (15), a power module (2), a master controller (3) and a common mode reactor (4), wherein the battery module (1) and the BMS (15) are integrated and installed in a structural part A (6), the power module (2) and the master controller (3) are installed in a structural part B (7), the common mode reactor (4), the structural part A (6) and the structural part B (7) are installed in a structural part C (8), the battery module (1) is connected with the power module (2) through an electric connecting piece (16), the power modules (2) are connected through an electric connecting piece (16), a first heat dissipation assembly (5) is arranged in the power module (2), and the master controller (3) controls the power module (2) to be turned on or turned off through the electric connecting piece (16), and a second heat dissipation assembly (10) is arranged in the structural member C (8).

2. The integrated chassis of the modular power assembly as claimed in claim 1, wherein the battery module (1) is externally provided with a first positive port (11), a first negative port (12) and a first battery signal port (13), the battery module (1) is formed by connecting a plurality of single batteries (14) in an end-to-end U-shaped series connection, the single batteries (14) are connected with each other through an electrical connector (16), and the BMS (15) is integrated in the electrical connector (16).

3. The integrated chassis of the modular power assembly as claimed in claim 1, wherein the power module (2) has a second positive port (21), a second negative port (22), a second battery signal port (23), a first control signal port (25) and an alternating current port (24) led out to the outside, and the second positive port (21), the second negative port (22) and the second battery signal port (23) are respectively connected with the battery module (1) having a first positive port (11), a first negative port (12) and a first battery signal port (13) led out to the outside.

4. The modular powertrain integration chassis of claim 3, the alternating current port (24) is an alternating current first port (241) and an alternating current second port (242), the alternating current second port (242) is connected with the alternating current first port (241) of the adjacent submodule, each bridge arm is formed by connecting a plurality of submodules in series, the alternating current first port (241) of the first submodule and the alternating current second port (242) of the last submodule in the bridge arm are used as system alternating current electric ports (26) to be connected with two ends of the common mode reactor (4), and a middle port (43) of the common mode reactor (4) is connected to a motor and an alternating current charging port, and an alternating current first port (241) of a head module in an upper bridge arm and an alternating current second port (242) of a tail module in a lower bridge arm are used as a system direct current bus port (27) to be connected with a DC/DC and direct current charging port.

5. The integrated chassis of the modular power assembly as set forth in claim 1, wherein the master controller (3) externally leads out a sampling port (31) and a second control signal port (32), and the second control signal port (32) is connected with the first control signal ports (25) of the plurality of power modules (2) through an electrical connector (16).

6. The integrated chassis of the modular power assembly as claimed in claim 1, wherein the common mode reactor (4) externally leads out a reactor alternating current first port (41), a reactor alternating current second port (42) and a middle port (43), and the common mode reactor (4) adopts two single reactors to share one iron core.

7. The modular powertrain-integrated chassis of claim 1, wherein the electrical connectors (16) are PCB boards, copper bars, wires, optical fibers.

8. The integrated chassis of modular powertrain according to claim 1, characterized in that the structural component C (8) is pre-installed with installation space for installing high-voltage distribution box, DC/DC module, circuit breaker, fuse.