CN216069630U - Integrated control system of extended-range automobile and new energy automobile - Google Patents

Abstract

The utility model discloses an integrated control system of an extended range type automobile and a new energy automobile, and the integrated control system comprises a generator controller and a power distribution unit, wherein the generator controller is connected with a generator, the power distribution unit is connected with a battery pack, a quick charge positive relay and a quick charge negative relay in the battery pack are integrated in the power distribution unit, and the power distribution unit and the generator controller are also integrated. The integrated control system of the extended range type automobile disclosed by the utility model effectively saves the arrangement space of the whole automobile and reduces the cost and the weight of the whole automobile; the structure of high-voltage interlocking is simplified, and the detection difficulty and the maintenance difficulty are simplified; the adhesion detection difficulty of the quick charge relay is reduced; the energy density of the battery pack and the driving range of the whole vehicle are improved.

Description

Integrated control system of extended-range automobile and new energy automobile

Technical Field

The utility model belongs to the field of new energy automobiles, and particularly relates to an integrated control system of a range-extended automobile.

Background

In recent years, international petroleum energy is gradually lacking, a new energy automobile which provides vehicle running power by electric energy becomes the research and development direction of various automobile manufacturers and is limited by the trouble of short pure electric running mileage, a range-extended electric automobile is produced, under the condition that the whole automobile does not meet the charging condition, a range extender (namely an assembly of an engine and a generator) provides energy for charging a power battery, the range-extended electric automobile is driven by output power of a driving motor, and meanwhile, the range-extended electric automobile has the related structure of a fuel automobile, is complex in structure and more in part number, and is limited in arrangement space under the condition that the assembly, maintenance, attractiveness and functions need to be met. Although the extended range electric automobile solves the pain point of mileage anxiety, the whole automobile has more parts, heavy weight, high cost, complex pipeline arrangement, complex structure, messy trend of high-voltage lines and more related interfaces, and simultaneously, the high-voltage interlocking fault frequency is improved, and the fault troubleshooting is difficult.

How to design an automobile control system which is integrated, light in weight and capable of reducing the burden of the whole automobile is a technical problem which needs to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an integrated control system of an extended-range automobile, which aims to solve the problems of dispersed and complicated parts, complex structure, messy trend of high-voltage lines, multiple related interfaces, multiple fault frequencies and difficult troubleshooting in the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the integrated control system of the extended-range automobile comprises a generator controller and a power distribution unit, wherein the generator controller is connected with a generator, the power distribution unit is connected with a battery pack, a quick-charging positive relay and a quick-charging negative relay in the battery pack are integrated in the power distribution unit, and the power distribution unit and the generator controller are also integrated.

Furthermore, the battery pack also comprises a quick-charging high-voltage wire, wherein the quick-charging high-voltage wire and the high-voltage wire of the integrated control system are shared and connected into the battery pack.

Further, the battery pack comprises a power battery pack, a battery anode and cathode contactor, a pre-charging contactor and a BMS.

Further, the integrated power distribution unit is also connected with an automobile heater and a compressor.

Furthermore, the quick charging positive and negative relays are further connected with a quick charging port of the integrated AC/DC base, and a slow charging port of the integrated AC/DC base is connected with a two-in-one OBC + DCDC charger.

The utility model further provides a new energy automobile which comprises the integrated control system in any one of the above aspects.

Compared with the prior art, the integrated control system of the extended range type automobile provided by the utility model has the following technical effects:

1. the problem that the arrangement of the engine room is compact and the pipeline is messy is solved through the integrated design of the GCU and the PDU.

2. The GCU + PDU two unifications possess high-pressure interlocking self-checking function, and each high-pressure interface of high-pressure annex all assembles here after integrated design, and the high-pressure interlocking return circuit that forms detects by the GCU, if the interlocking trouble takes place for the return circuit, sends to VCU through the CAN message after the GCU detects the trouble, has reduced past tedious high-pressure interlocking return circuit design, has improved troubleshooting efficiency greatly, and the design degree of difficulty.

3. In the GCU + PDU two unification schemes, still integrated design the positive, negative pole relay that fills soon in the primary battery package, liberated battery package inner space, improved battery package energy density, and then improved the continuation of the journey mileage.

4. In the two unification schemes of GCU + PDU, when filling soon, the electric current gets into the battery package through two unification high-voltage lines, has reduced battery package high voltage interface, has solved whether the battery package possesses the function of filling soon, all can share a battery package structure, does benefit to battery package platformization and impels.

5. In the two unification schemes of GCU + PDU, the adhesion of filling positive and negative electrode relay soon detects by GCU the control unit detects, greatly reduced BMS's burden.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a circuit diagram of a control system of an extended range vehicle in the prior art.

Fig. 2 is a circuit diagram of an integrated control system of an extended range vehicle according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 2, an integrated control system of an extended range vehicle according to an embodiment of the present invention includes: the power generation device comprises a generator controller GCU and a power distribution unit PDU, wherein the generator controller GCU is connected with a generator, the generator generates power and enters a battery pack after passing through the GCU, and the power distribution unit PDU is connected with the battery pack. The battery pack comprises a power battery pack, a battery anode contactor, a battery cathode contactor, a pre-charging contactor and a BMS.

Compared with the scheme shown in fig. 1 and fig. 2, in the original scheme of the automobile control system, the PDU of the automobile is separated from the GCU, the middle of the PDU is connected through a plurality of lines, the GCU in the original state does not have the high-voltage interlocking self-checking function, after the high-voltage interlocking loop of the PDU is connected with the GCU in series, the PDU is connected out and detected by the VCU, the loop is long, and the lines are complicated. In one embodiment of the utility model, the GCU and the PDU are integrated into a whole physically, so that the number of parts and the number of wires are reduced, and after the GCU + + PDU is integrated into a whole, the GCU + + PDU has a high-voltage interlocking self-checking function, all high-voltage interfaces of high-voltage accessories are gathered together after integrated design, formed high-voltage interlocking loops are all connected to a GCU controller and are detected by the GCU, if the loops have interlocking faults, the GCU sends the faults to the VCU through CAN messages after detecting the faults, and does not need to be connected out by hard wires to the VCU (vehicle control unit), so that the redundant design of the high-voltage interlocking loops is reduced, the fault troubleshooting efficiency is greatly improved, and the design difficulty is greatly reduced. The high-voltage interlocking principle is that high-voltage connector interfaces of all high-voltage parts are connected in series through low-voltage lines and detected through an externally connected controller or internally detected, whether an open circuit exists or not is judged, if the open circuit shows that the high-voltage connectors are not connected firmly, high-voltage buckling risks and arcing and firing risks exist, and therefore the high-voltage parts need to be designed with high-voltage interlocking.

In this embodiment, after the power distribution unit and the generator controller are also integrated, the fast charging positive and negative relays originally arranged in the battery pack are integrated in the power distribution unit. In the prior art, a quick-charging positive and negative electrode relay is arranged in a battery pack, and the control and adhesion detection of the relay are finished by a BMS (battery management system); in the GCU + PDU two-in-one integrated design scheme, the quick charging relay is also arranged in the GCU, the relay is adhered and detected by the GCU control unit and does not pass through the BMS any more, and the burden of the BMS is greatly reduced; meanwhile, the relay is moved out of the battery pack to the two-in-one, so that the battery pack has more space arrangement battery cores under the same condition, the energy density is improved, and the driving range is increased. High voltage system load power is generally great, and the electric current has the risk of overflowing, and when the electric current was too big in the twinkling of an eye, the relay switch probably can not throw off, and the relay adhesion this moment, high voltage load will be in the access state always, takes the high pressure always, has the risk of electrocution, and the adhesion detects then can effectively avoid this phenomenon to take place, reduces the incidence of this phenomenon.

Preferably, in an embodiment of the present invention, the fast charging high voltage line is common to the high voltage line of the integrated control system and is connected to the battery pack. Referring to fig. 1, a fast charging high-voltage line is directly connected to a battery pack, the battery pack has three interfaces, the battery pack is reduced into two interfaces, the fast charging high-voltage line is connected to a GCU + PDU two-in-one, and the fast charging high-voltage line is connected to the battery pack through a shared high-voltage line after the two-in-one; by adopting the scheme of the utility model, the high-voltage interfaces of the battery pack are reduced, the battery pack states of the vehicle type with the quick charge function and the vehicle type without the quick charge function are unified, and the platformization of the battery pack is facilitated.

After the integration, the quick-charging positive and negative electrode relays in the power distribution unit are further connected with a quick-charging port of an AC-DC integrated seat, the AC-DC integrated seat in the figure 2 comprises a quick-charging button and a slow-charging port, and the slow-charging port is connected with a vehicle-mounted two-in-one OBC + DCDC charger. Because the interface of the fast charging positive and negative relays originally existing in the battery pack is integrated in the two-in-one GCU + PDU, when the fast charging positive and negative relays are connected with the vehicle-mounted two-in-one OBC + DCDC charger, only one interface is shared, and compared with the prior art, the interface of one battery pack can be reduced. The MCU is a core power electronic unit special for the new energy automobile, and controls the motor to output specified torque and rotating speed by receiving a vehicle running control command of the VCU so as to drive the vehicle to run. The direct current electric energy of the power battery is converted into the required high-voltage alternating current, and the motor body is driven to output mechanical energy. Meanwhile, the MCU has the functions of motor system fault diagnosis protection and storage.

In addition, the integrated power distribution unit is also connected to the vehicle heater PTC and the compressor CCU to provide the electrical power required for distribution.

The integrated controller of the extended range type automobile disclosed by the utility model effectively saves the arrangement space of the whole automobile and reduces the cost and weight of the whole automobile; the structure of high-voltage interlocking is simplified, and the detection difficulty and the maintenance difficulty are simplified; the adhesion detection difficulty of the quick charge relay is reduced; the energy density of the battery pack and the driving range of the cross car are improved.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims (6)

1. The integrated control system of the extended-range automobile comprises a generator controller and a power distribution unit, wherein the generator controller is connected with a generator, the power distribution unit is connected with a battery pack, and the integrated control system is characterized in that a quick-charging positive relay and a quick-charging negative relay in the battery pack are integrated in the power distribution unit, and the power distribution unit and the generator controller are also integrated.

2. The integrated control system of the extended range vehicle of claim 1, further comprising a fast charging high voltage line, wherein the fast charging high voltage line is common to the high voltage lines of the integrated control system and is connected to the battery pack.

3. The integrated control system of an extended range vehicle of claim 2, wherein the battery pack comprises a power battery pack, a battery positive and negative contactor, a pre-charge contactor, and a BMS.

4. The integrated control system of claim 2, wherein the integrated power distribution unit is further connected to a vehicle heater and a compressor.

5. The integrated control system of the extended range vehicle of claim 2, wherein the fast charging positive and negative relays are further connected to a fast charging port of the integrated ac/dc base, and a slow charging port of the integrated ac/dc base is connected to a two-in-one OBC + DCDC charger.

6. A new energy vehicle comprising the integrated control system of the extended range vehicle of any preceding claim.

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