Electric vehicle without on-board charger, and battery-swappable extended-range electric vehicle

Abstract

An electric vehicle without an on-board charger, and a battery-swappable extended-range electric vehicle. The electric vehicle comprises a charging interface (1), wherein the interior of the charging interface (1) is connected to a control unit and an on-board battery (6), and the exterior of the charging interface (1) is electrically connected to an external device (3) or a cable. The electric vehicle is not provided with an on-board charger (a) or an on-board charging system which is connected to the charging interface (1). A built-in charger of a vehicle is removed, but an on-board charging interface is kept, such that the vehicle structure can be simplified, thereby reducing the vehicle manufacturing cost.

Description

An electric vehicle without an on-board charger and a battery-swap extended-range electric vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 29, 2023, with application number 202311847906.2 and application name “An electric vehicle without an on-board charger and a battery-swap extended-range electric vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of battery-swap electric vehicles and range-extended electric vehicles, and in particular to an electric vehicle without an on-board charger and a battery-swap range-extended electric vehicle. Background Art

[0003] The slow charging system of new energy vehicles mainly consists of charging piles, charging wiring harnesses, on-board chargers, high-voltage control boxes, power batteries, DC-DC converters, low-voltage batteries, and various high-voltage wiring harnesses and low-voltage control wiring harnesses.

[0004] As shown in Figure 1, fast charging is also called DC charging, that is, the off-board charger a (fast charging pile) converts the AC power of the grid into high-voltage DC power to charge the battery pack. It has high power and can efficiently and quickly charge the electric vehicle in a short time.

[0005] On-board charger (OBC), also known as vehicle charger, is a charger fixed on an electric vehicle. It has the ability to safely and automatically charge the electric vehicle's power battery. It is mainly used in electric vehicles that must be charged, such as pure electric vehicles (BEV, pure battery drive) and plug-in hybrid electric vehicles (PHEV).

[0006] Most commercially available models are equipped with an external charging port, and the vehicle is equipped with an onboard charger connected to the external charging port. During use, consumers need to determine whether to use the fast charging port or the slow charging port based on the type of external charging pile. The entire use process requires users to make a selection, and the use logic is relatively cumbersome. Electronic products such as mobile phones are more convenient to use. Mobile phones use an external charging head, and the external charging head is connected to the mobile phone charging port with only a type-C fast plug. Consumers can use it very easily and can also choose to use fast charging and slow charging on their mobile phones. Summary of the Invention

[0007] The technical problem to be solved by the present invention is that in the prior art, there are too many redundant technologies for operating vehicle mileage anxiety and vehicle power supplementation, which are complex to manufacture and have high costs.

[0008] In order to solve the problems existing in the prior art, the present invention discloses an electric vehicle without an on-board charger and a battery-swap extended-range electric vehicle, wherein the vehicle includes a charging interface;

[0009] The interior of the charging interface is connected to the control unit and the vehicle battery, and the exterior of the charging interface is electrically connected to an external device or cable; and the vehicle is not equipped with an on-board charger or on-board charging system connected to the charging interface.

[0010] Furthermore, the charging interface is a standard charging interface that complies with international or national standards, and the standard interface is a DC charging port.

[0011] Furthermore, the external device is a high-voltage DC charger or a low-voltage DC charger.

[0012] Furthermore, a charging port cover is provided on the side of the charging port.

[0013] Furthermore, the vehicle includes at least one of a battery-swap electric vehicle, an extended-range electric vehicle, a pure electric vehicle, and a plug-in hybrid vehicle.

[0014] The present invention also provides a battery-swap and range-extended electric vehicle, which includes the above-mentioned electric vehicle and further includes a battery-swap unit, a range-extending unit, a drive unit, and a control unit;

[0015] A battery-swap unit, comprising a battery-swap battery and a battery-swap lock body, through which the battery-swap battery can be quickly connected to the electric vehicle;

[0016] The range extender unit includes an engine and a generator. The engine drives the generator to generate electricity and supply power to the battery.

[0017] The drive unit and the range extender unit are electrically connected to the control unit respectively.

[0018] Further, the drive unit includes at least one of a front-wheel drive motor and a rear-wheel drive motor, or the drive unit includes a four-wheel drive motor.

[0019] Furthermore, the control unit includes a motor controller and a range extender controller.

[0020] Furthermore, the range extender unit also includes a fuel tank and a fuel filler port connected to the engine through pipelines, and the engine is also provided with an exhaust pipe.

[0021] Furthermore, a longitudinal groove is provided on the top of the battery-swap battery, and the cavity of the longitudinal groove is used for longitudinally arranging the exhaust pipe.

[0022] Furthermore, at least one of a quick-change water connector and a quick-change electrical connector is provided in the longitudinal groove of the exhaust pipe.

[0023] The electric vehicle without an onboard charger provided by the present invention eliminates the built-in charger of the vehicle, and the structure of the entire vehicle is simpler, but it can completely eliminate the mileage anxiety of consumers and operating vehicles, and can reduce the manufacturing cost of the entire vehicle.

[0024] The electric vehicle without an on-board charger provided by the present invention eliminates the built-in charger of the vehicle, and the circuit and control system are simpler. By eliminating the charger, the range extender controller and the motor controller can be integrated into one, and the entire control unit has a higher degree of integration.

[0025] The electric vehicle without an onboard charger provided by the present invention can avoid having to cut a notch in the battery swap and reserve installation space by arranging the quick water-swap connector and the quick electricity-swap connector in the avoidance groove on the top of the battery swap. This can reduce the difficulty of assembling and manufacturing the battery swap and prevent the quick water-swap connector and the quick electricity-swap connector from affecting the battery swap body when damaged or replaced, thereby further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0027] FIG1 is a schematic diagram of the prior art;

[0028] Figure 2 is a schematic diagram of the prior art eliminating the on-board charger;

[0029] FIG3 is a schematic diagram of a charging principle without a charger according to an embodiment of the present invention;

[0030] FIG4 is a schematic diagram of a battery-swap extended-range electric vehicle provided by an embodiment of the present invention;

[0031] FIG5 is a schematic diagram of an installation of a battery replacement provided by an embodiment of the present invention;

[0032] FIG6 is a schematic diagram of a battery replacement arrangement provided by an embodiment of the present invention;

[0033] FIG7 is a schematic diagram of another battery replacement provided by an embodiment of the present invention.

[0034] Explanation of the accompanying drawings: 1-charging interface, 2-AC charging pile (slow charging), 21-DC charging pile (slow charging), 3-DC charging pile (fast charging), 4-range extender unit, 41-engine, 42-generator, 43-fuel tank, 44-exhaust pipe, 5-control unit (motor driver), 6-battery, 61-battery replacement battery, 62-battery replacement lock body, 63-longitudinal groove, 64-quick water replacement connector, 65-quick battery replacement connector, 71-front drive motor, 72-rear drive motor, 8-vehicle chassis. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Example 1

[0037] Figure 1 shows the charging structure and charging principle of an electric vehicle in the prior art, which includes an AC charging pile 2, which is connected to an external charging port and an on-board charger a via a cable, and the on-board charger a is connected to a control unit 5 and a battery 6 to achieve AC slow charging.

[0038] The DC charging pile is connected to the vehicle control unit 5 and the battery 6 via the external charging interface 1 to achieve DC fast charging.

[0039] As shown in Figure 2, in existing electric vehicles, the onboard charger is merely a redundant backup component. At the national level, every vehicle carries an onboard charger. Driving around with the backup charger increases vehicle weight and wastes energy. Therefore, the onboard charger can be eliminated entirely and combined with existing AC charging stations to create a DC slow-charging station. This reduces vehicle weight and purchase costs, while also reducing energy consumption, increasing onboard installation space, and improving the integration of onboard equipment. Due to space constraints, some components, such as controllers, need to be installed separately. While the annual cost and energy savings for a single vehicle are small, the cumulative cost and energy savings are substantial given the millions of electric vehicles sold nationwide.

[0040] Furthermore, charging stations can be standardized, with all being converted to DC charging stations. By improving and optimizing vehicles, we can unify charging patterns across the board and reduce the social investment costs associated with the plethora of charging options in the domestic market.

[0041] As shown in FIG3 , the present invention discloses an electric vehicle without an on-board charger and a battery-swap range-extended electric vehicle, wherein the vehicle includes a charging interface 1 .

[0042] The interior of the charging interface 1 is connected to the control unit 5 and the vehicle battery 6, and the exterior of the charging interface 1 is electrically connected to the external device 3 or cable. The vehicle is not equipped with an onboard charger a or onboard charging system connected to the charging interface 1. The charging interface 1 includes a fast charging connector or a slow charging connector.

[0043] Furthermore, the charging interface 1 is a standard charging interface that complies with international or national standards, and the standard interface is a DC charging port.

[0044] Furthermore, the external device 3 is a high-voltage DC charger or a low-voltage DC charger.

[0045] Furthermore, a charging port cover is provided on the side of the charging interface 1 .

[0046] Furthermore, vehicles include battery-swap electric vehicles, range-extended electric vehicles, pure electric vehicles, and plug-in hybrid vehicles.

[0047] Example 2

[0048] 3 and 4 , the present invention further provides a battery-swap extended-range electric vehicle, which includes the above-mentioned electric vehicle, that is, except for the on-board charger, further includes a battery-swap unit, a range-extending unit 4 , a drive unit, and a control unit;

[0049] The range extender unit includes an engine 41 and a generator 42. The engine 41 drives the generator 42 to generate electricity and supply power to the battery 61.

[0050] Furthermore, the drive unit includes at least one of a front drive motor 71 and a rear drive motor 72, or the drive unit includes a four-wheel drive motor. The drive mode can be selected from front drive, rear drive or four-wheel drive. Figure 4 of the present invention is only for illustration.

[0051] Furthermore, the control unit includes a motor controller 5 and a range extender controller. The front drive motor 71 and the range extender unit 4 are electrically connected to the control unit.

[0052] Furthermore, the range extender unit also includes a fuel tank 43 and a fuel filler port connected to the engine through pipelines, and an exhaust pipe 44 is also provided on the engine.

[0053] As shown in Figures 5 and 6, the battery swap unit includes a battery swap battery 61 and a battery swap lock body 62. The battery swap lock body adopts the battery swap lock body technology disclosed in the market, which will not be exemplified in this article. The battery swap lock body 62 fixes the battery swap battery 61 to the vehicle chassis 8 or the bottom of the frame.

[0054] Furthermore, as shown in Figure 6, a longitudinal groove 63 is provided on the top of the battery-swap battery. The longitudinal groove 63 extends roughly along the length direction of the electric vehicle. The cavity of the longitudinal groove 63 is used to longitudinally arrange the exhaust pipe 44. At least one of a quick-change water connector 64 and a quick-change electricity connector 65 is provided on the top of the battery-swap battery.

[0055] As shown in Figure 7, further, a quick water change connector 64 and a quick electricity change connector 65 are provided in the longitudinal groove 63. This is an alternative method, in which the quick water change connector 64 and the quick electricity change connector 65 are arranged in the longitudinal groove 63. At this time, the quick water change connector 64 and the quick electricity change connector 65 are arranged in the avoidance groove 63 and close to the battery replacement battery 61. Compared with Figure 6, this layout of the present invention can avoid reserving installation space in the battery replacement battery, ensuring that the battery replacement battery is a complete whole, reducing the difficulty of assembly and manufacturing of the battery replacement battery, and preventing the quick water change connector 11 and the quick electricity change connector 12 from being damaged or replaced, which affects the battery replacement battery body. It can further improve safety.

[0056] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0057] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other.

[0058] The above disclosures are merely some preferred embodiments of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

[0059] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, "plurality" means two or more groups.

[0060] In addition, in the embodiments of the present application, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to changes in the orientation of the components in the drawings.

[0061] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0062] In the embodiments of the present application, the terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0063] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0064] The serial numbers of the embodiments of this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are only preferred embodiments of this application and do not limit the scope of the patent of this application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of this application.

Claims

1. An electric vehicle without an on-vehicle charger, characterized in that, The vehicle includes a charging interface (1); The interior of the charging interface (1) is connected to a control unit and an on-vehicle battery (6), and the exterior of the charging interface (1) is electrically connected to an external device (3) or a cable; and the vehicle is not provided with an on-vehicle charger (a) or an on-vehicle charging system connected to the charging interface (1).

2. An electric vehicle without an on-vehicle charger according to claim 1, characterized in that The charging interface (1) is a DC charging port.

3. An electric vehicle without an on-vehicle charger according to claim 1, characterized in that The external device (3) is a high-voltage DC charger or a low-voltage DC charger.

4. An electric vehicle without an on-board charger according to claim 1, characterized in that, A charging port cover is further provided beside the charging interface (1).

5. An electric vehicle without an on-vehicle charger according to claim 1, characterized in that, The vehicle includes at least one of a battery-swapping electric vehicle, an extended-range electric vehicle, a pure electric vehicle, and a plug-in hybrid vehicle.

6. A battery swapping range-extended electric vehicle, comprising the electric vehicle according to any one of claims 1-5, characterized in that, It further includes a battery-swapping unit, an extended-range unit (4), a driving unit, and a control unit; The battery-swapping unit, which includes a battery-swapping battery (61) and a battery-swapping lock body, and the battery-swapping battery (61) is detachably connected to the electric vehicle through the battery-swapping lock body; The extended-range unit, which includes an engine (41) and a generator (42), and the engine (41) drives the generator (42) to generate electricity and supply power to the battery-swapping battery (61); The driving unit (4) and the extended-range unit are respectively electrically connected to the control unit.

7. The range-extended electric vehicle with battery swapping according to claim 6, wherein The driving unit includes at least one of a front-wheel drive motor (71) and a rear-wheel drive motor (72), or the driving unit includes a four-wheel drive motor.

8. The range-extended electric vehicle with battery swapping according to claim 7, wherein The control unit, which includes a motor controller (5) and an extended-range controller.

9. The range-extended electric vehicle with battery swapping according to claim 8, characterized in that, The extended-range unit further includes a fuel tank (43) and a fuel filler port connected to the engine (41) through a pipeline, and an exhaust pipe (44) is further provided on the engine.

10. A battery swapping type range-extended electric vehicle according to claim 9, characterized in that, A longitudinal groove is provided at the top of the battery-swapping battery, and the cavity of the longitudinal groove (63) is used for longitudinally arranging the exhaust pipe (44).

11. A battery swapping type range-extended electric vehicle according to claim 10, characterized in that, At least one of a quick water-changing connector (64) and a quick electricity-changing connector (65) is provided in the longitudinal groove.

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