CN108825728A - A kind of no gear shift power interruption two-level electric gear shift(ing) - Google Patents
A kind of no gear shift power interruption two-level electric gear shift(ing) Download PDFInfo
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- CN108825728A CN108825728A CN201811004797.7A CN201811004797A CN108825728A CN 108825728 A CN108825728 A CN 108825728A CN 201811004797 A CN201811004797 A CN 201811004797A CN 108825728 A CN108825728 A CN 108825728A
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- gear
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- engaging element
- input shaft
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/091—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears including a single countershaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/037—Gearboxes for accommodating differential gearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
Abstract
The present invention relates to a kind of no gear shift power interruption two-level electric gear shift(ing)s,Including sequentially connected driving motor,Transmission gear component and differential mechanism,Transmission gear component includes the first engaging element,Second engaging element,Input shaft,Jackshaft,Output shaft,One grade of driving gear,First speed driven gear,Two grades of driving gears,Two grades of driven gears,Main reducing gear driving gear and main reducing gear driven gear,Input shaft is connect with driving motor,One grade,Two grades of driving gears are separately connected input shaft,One grade,Two grades of driven gears,Main reducing gear driving gear is separately connected jackshaft,Main reducing gear driven gear is connect with differential mechanism,First engaging element includes left-interface part,Right side bonding part and sync section,Sync section and input shaft or intermediate axis connection,Second engaging element is set to two grades between driving gear and input shaft or first speed driven gear and jackshaft.Compared with prior art, the present invention has many advantages, such as power failure-free, compact-sized.
Description
Technical field
The present invention relates to transmission technology fields, more particularly, to a kind of no gear shift power interruption two-level electric shift
Device.
Background technique
Currently, most of pure electric vehicle speed changers are single speed transmission, although automatically controlled difficulty is small, drivability is good,
Driving motor drive efficiency is easy to be affected under high-speed working condition, and the demand power of motor is excessive, cause motor volume and
Cost is excessively high；And existing two speed gear gear shift can effectively improve driving motor working efficiency, and can reduce driving electricity
The maximum power requirement of machine, but its engaging element is general double clutch or bilateral synchronous device structure, using it is double from
Gearshift procedure power may be implemented without gear shift, but automatically controlled difficulty and structure complexity increase is interrupted, using synchronizer system in clutch
Although automatically controlled difficulty is low, system complexity is reduced, and it is the higher selection of current cost performance that cost is therefore relatively low, is existed and is changed
Shelves power interruption.But either clutch system or synchronizer system, complexity is relatively still higher, volume and cost
It is difficult to decrease, entire speed changer overall volume and weight are larger.In addition, most of transmission system uses distributed structure,
Motor and controller is not integrated into inside case of transmission and its in controller, and it is not tight enough to also result in speed changer structure
It gathers.
105805260 A of patent CN discloses a kind of rear axle of electric automobile driving device, equally uses 2 grades of forms, changes
Shelves element is synchronizer system, and engaging element is located on jackshaft, for opposite input shaft, increases transmission shaft to ruler
Very little, driving motor is also not integrated into inside speed changer.In addition, there is power interruption in gearshift procedure, vehicle is influenced
Driving performance.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide in a kind of no gear shift power
Disconnected two-level electric gear shift(ing).
The purpose of the present invention can be achieved through the following technical solutions：
A kind of no gear shift power interruption two-level electric gear shift(ing), including driving motor, the transmission gear being internally integrated
Component and differential mechanism, driving motor, transmission gear component, differential mechanism are sequentially connected, and the transmission gear component includes
First engaging element, the second engaging element, input shaft, jackshaft, output shaft, one grade of driving gear, first speed driven gear, two grades
Driving gear, two grades of driven gears, main reducing gear driving gear and main reducing gear driven gear, the input shaft and driving electricity
Machine connection, one grade of driving gear, two grades of driving gears respectively with input axis connection, first speed driven gear, main reducing gear driving tooth
Wheel and two grades of driven gears respectively with intermediate axis connection, the main reducing gear driven gear connect with differential mechanism after set on export
On axis, first engaging element includes left-interface part, right side bonding part and sync section, the sync section
Two grades of driving gears and input shaft or first speed driven gear are set to input shaft or intermediate axis connection, second engaging element
Between jackshaft.
Preferably, when the sync section is with input axis connection, the sync section is changed along input shaft first
Shelves element moves left and right, and second engaging element is separately connected with two grades of driving gears, input shafts, one grade of driving gear,
On input shaft, the right side bonding part is connected two grades of equal empty sets of driving gear with one grade of driving gear.Work as sync section
Right side in the first engaging element and it is connected with right side bonding part, the power of driving motor is transferred to one grade of driving gear；
When the second engaging element is in close state, the power of driving motor is transferred to two grades of driving gears.
Preferably, the sync section and when intermediate axis connection, second engaging element and first speed driven gear,
Jackshaft is separately connected, and one grade of driving gear, two grades of driving gears are affixed with input shaft respectively, first speed driven gear, two grades from
Moving gear is placed on jackshaft respectively, and the left side bound fraction is connected with two grades of driven gears.The sync section
When with intermediate axis connection, left-interface part and sync section are in engagement state, and the power of driving motor is driven by two grades
Gear is transferred to jackshaft；When the second engaging element is in close state, the power of driving motor is passed by first speed driven gear
It is handed to jackshaft.Preferably, first engaging element uses gear clutch or synchronizer.
Preferably, second engaging element uses wet type or dry clutch.
Preferably, the sync section is moved left and right by electronic or Ye Ye executing agency along input shaft.
Preferably, the transmission gear component further includes the parking ratchet wheel for realizing parking, and the parking ratchet wheel is solid
It is scheduled on jackshaft.
Compared with prior art, the present invention has the following advantages that：
1, compact-sized：Two engaging elements of the invention use gear clutch and dry type or wet clutch, and
And driving motor is integrated in inside speed changer, keep electric control controller and gearbox controller integrated, further increases
The compactedness of drive system is added；
2, power failure-free：Electric-powered transfer device of the invention uses two engaging elements, the first engaging element
For engagement sleeve (can be hydraulic or electric operator), the second engaging element be that ordinary clutch (can be hydraulic
Or electric operator), rather than two clutch systems pass through the association of clutch and engagement sleeve in gearshift procedure
Regulation system, may be implemented gearshift procedure power failure-free gear shift, effectively improves the driving performance of vehicle；
3, long service life：Engagement sleeve of the invention does not use friction mode synchronous, is not necessarily to friction material, Neng Gouyou
Effect extends the service life of engaging element；
4, volume weight is small, at low cost：It is extremely simple using engagement sleeve engaging element structure, it can be by gear clutch
The bonding part of device is integrated into corresponding gear internal (close to the part of transmission shaft), can be effectively reduced the volume of speed changer,
Weight and cost；
5, shift time is short：Utilize the coordinated control active synchronization principal and subordinate of the faster response characteristic of driving motor and clutch
Rotational speed difference and outer corner difference are held, realize the Fast synchronization process without rotational speed difference and outer corner difference, while reducing engaging element itself
Difficulty is controlled, drivability is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the two-level electric gear shift(ing) of first embodiment；
Fig. 2 is the structural schematic diagram of the two-level electric gear shift(ing) of second embodiment；
Shown in figure label：
1, driving motor, 2, input shaft, 3, one grades of driving gears, 4, right side bonding part, 5, sync section, 6, second changes
Shelves element, 7, two grades of driving gears, 8, jackshaft, 9, parking ratchet wheel, 10, two grades of driven gears, 11, main reducing gear driving tooth
Wheel, 12, first speed driven gear, 13, main reducing gear driven gear, 14, differential mechanism, 15, output shaft, 16, left-interface part.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1, the present invention relates to a kind of no gear shift power interruption two-level electric gear shift(ing)s, mainly by driving motor
1, transmission gear component, 14 three parts of differential mechanism composition；The driving motor 1 is integrated in inside speed changer；The change
Fast device gear assembly is by 12, two grades of 2, one grades of input shaft, 3, two grades of driving gear driving gear 7, first speed driven gear driven gears
10, the first engaging element, the second engaging element 6, parking ratchet wheel 9, main reducing gear driving gear 11, main reducing gear driven gear
13, jackshaft 8, output shaft 15 form.
First engaging element includes right side bonding part 4, sync section 5 and left-interface part 16.Input shaft 2 directly with
Driving motor 1 is connected, and one grade of driving gear 3 and two grades of equal empty sets of driving gear 7 are on input shaft 2.Right side bonding part 4 is solid
It is connected in one grade of driving gear 3, sync section 5 is fixed on input shaft 2 and can hold by its corresponding electronic or liquid liquid
Row mechanism is moved left and right along input shaft 2 in the first engaging element.Second engaging element 6 is for connecting two grades of 7 Hes of driving gear
Input shaft 2.When sync section 5 is in right side and is connected with right side bonding part 4, the power of driving motor 1 can be transferred to one
Shelves driving gear 3；When the second engaging element 6 is in close state, the power of driving motor 1 can be transferred to two grades of driving gears
7.First speed driven gear 12, parking ratchet wheel 9, main reducing gear driving gear 11 and two grades of driven gears 10 are respectively fixedly connected in centre
On axis 8, wherein one grade of driving gear 3 is engaged with first speed driven gear 12, two grades of driving gears 7 are nibbled with two grades of driven gears 10
It closes.Main reducing gear driven gear 13 is connected with differential mechanism 14 and is located on output shaft 15, can be defeated by power by differential mechanism 14
Out to vehicle.Parking ratchet wheel 9 can realize that parking is made by parking system (generally electric operator is, it can be achieved that P gear)
With.
The preferred gear clutch of first engaging element.Gear clutch carries out revolving speed using non-friction type and synchronizes, and does not need
Clutch system or synchronizer system friction material.Gear clutch can be unilateral or bilateral clutch.In order into
One step reduces speed changer axial dimension, and the bonding part of left and right sides can be directly integrated into the gear internal connected with it and (lean on
The part of nearly transmission shaft).(depending primarily on transmitting torque needs for the preferably common dry type of second engaging element 6 or wet clutch
Ask, executing agency can be hydraulic or electric operator), rather than in order to realize gear shift power failure-free in existing system
And the double clutch system used.
The working principle of speed changer of the present invention is：
When sync section 5 is on the right side of the first engaging element, and it is connected with right side bonding part 4, the power of driving motor 1
One grade of driving gear 3, i.e. low gear can be transferred to；When the second engaging element 6 is in close state, driving motor 1 is moved
Power can be transferred to two grades of driving gears 7, i.e. high gear.Entire gearshift procedure is complete by its electronic or hydraulic actuating mechanism
At.
For its low gear to high speed gear switch process, specific operation process is as follows：
1) degree of engagement of the second engaging element 6, the torque transferred that the first engaging element is transmitted to are controlled first
Two engaging elements 6 are realized and are unloaded to the first engaging element；
2) shelves are plucked to engaged gear (i.e. the first engaging element) using the first engaging element executing agency；
3) revolving speed and the second engaging element 6 for controlling driving motor 1, complete the engagement of the second engaging element 6；
4) according to the torque of current driver's demand torque recovery driving motor 1 to corresponding level.
For high gear to low gear handoff procedure, specific operation process is as follows：
1) the second engaging element of control, which executes structure, is gradually disengaged it, and the second engaging element principal and subordinate moved end is in the sliding shape that rubs
State；
2) revolving speed for controlling driving motor 1, actively adjusts principal and subordinate in the first engaging element of target gear using driving motor 1
The rotational speed difference and outer corner difference at end guarantee its rotational speed difference and outer corner difference in a certain range (at this point, its angular position may need
Obtained by sensor), the double-deck tracing control is needed at this time, by controlling the output torque of motor, while guaranteeing principal and subordinate end
Rotational speed difference and outer corner difference are to target level；
3) target gear is carried out using the first engaging element executing agency quickly hanging shelves, engages corresponding engaging element master
From end part, and it is kept completely separate the second engaging element；
4) according to the torque of current driver's demand torque recovery driving motor 1 to corresponding level.
Embodiment 2
As shown in Fig. 2, the present embodiment is on the basis of first embodiment, original engaging element is mobile from input shaft 2
To on jackshaft 8.One grade of driving gear 3 and two grades of driving gears 7 are fixed on input shaft 2 at this time；One grade driven
Gear 12 and two grades of driven gears 10 are then placed on jackshaft 8.Left-interface part 16 and two grades of 10 phases of driven gear
Even, when left-interface part 16 and sync section 5 are in engagement state, then the power of driving motor 1 can work as driven tooth by 2
Wheel 10 is transmitted to jackshaft 8；Second engaging element 6 closes shape for connecting first speed driven gear 12 and jackshaft 8, when it is in
The power of state, driving motor 1 can be transferred to jackshaft 8 by first speed driven gear 12.
Other structures are same as Example 1 in the present embodiment.The gear switch process of the present embodiment is same as Example 1,
Details are not described herein.
Certainly, it is only a part of preferred embodiment of the invention that this two kinds of embodiments are described, rather than all real
Example is applied, therefore, anything that does not depart from the technical scheme of the invention according to the technical essence of the invention make above embodiments
Any simple modifications, equivalents, and modifications, belong to the protection scope of technical solution of the present invention.Such as change one grade, two
The position of shelves driving gear or one grade, two grades driven gear, or change the location of the first gear shift and the second engaging element
Obtained similar embodiment is within the scope of patent protection.
Claims (9)
1. a kind of no gear shift power interruption two-level electric gear shift(ing), which is characterized in that including the driving motor being internally integrated
(1), transmission gear component and differential mechanism (14), driving motor (1), transmission gear component, differential mechanism (14) are sequentially connected,
The transmission gear component includes the first engaging element, the second engaging element (6), input shaft (2), jackshaft (8), output
Axis (15), one grade of driving gear (3), first speed driven gear, two grades of driving gears (7), two grades of driven gears (10), main reducing gears
Driving gear (11) and main reducing gear driven gear (13), the input shaft (2) are connect with driving motor (1), one grade of active
Gear (3), two grades of driving gears (7) connect with input shaft (2) respectively, first speed driven gear, main reducing gear driving gear (11)
And two grades of driven gears (10) connect with jackshaft (8) respectively, the main reducing gear driven gear (13) and differential mechanism (14)
It is set on output shaft (15) after connection, first engaging element includes left-interface part (16), right side bonding part (4)
With sync section (5), the sync section (5) is connect with input shaft (2) or jackshaft (8), second engaging element
(6) it is set between two grades of driving gears (7) and input shaft (2) or first speed driven gear and jackshaft (8).
2. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 1, which is characterized in that described
When sync section (5) is connect with input shaft (2), the sync section (5) is along input shaft (2) in first engaging element or so
Mobile, second engaging element (6) is separately connected with two grades of driving gears (7), input shaft (2), one grade of driving gear
(3), two grades of driving gear (7) empty sets are on input shaft (2), the right side bonding part (4) and one grade of driving gear (3)
It is connected.
3. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 2, which is characterized in that work as synchronization
Partially (5) are in the right side of the first engaging element and are connected with right side bonding part (4), and the power of driving motor (1) is transferred to
One grade of driving gear (3)；When the second engaging element (6) is in close state, the power of driving motor (1) is transferred to two grades of actives
Gear (7).
4. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 1, which is characterized in that described
When sync section (5) is connect with jackshaft (8), second engaging element (6) and first speed driven gear, jackshaft (8) point
Do not connect, one grade of driving gear (3), two grades of driving gears (7) are affixed with input shaft (2) respectively, first speed driven gear, two grades from
Moving gear (10) is placed in respectively on jackshaft (8), and the left side bound fraction is connected with two grades of driven gears (10).
5. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 4, which is characterized in that described
When sync section (5) is connect with jackshaft (8), left-interface part (16) and sync section (5) are in engagement state, driving electricity
The power of machine (1) is transferred to jackshaft (8) by two grades of driven gears (10)；When the second engaging element (6) is in close state,
The power of driving motor (1) is transferred to jackshaft (8) by first speed driven gear.
6. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 1, which is characterized in that described
First engaging element uses gear clutch or synchronizer.
7. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 1, which is characterized in that described
Second engaging element (6) uses wet type or dry clutch.
8. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 2, which is characterized in that described
Sync section (5) is moved left and right by electronic or Ye Ye executing agency along input shaft (2).
9. a kind of no gear shift power interruption two-level electric gear shift(ing) according to claim 1, which is characterized in that described
Transmission gear component further includes the parking ratchet wheel (9) for realizing parking, which is fixed on jackshaft (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004797.7A CN108825728A (en) | 2018-08-30 | 2018-08-30 | A kind of no gear shift power interruption two-level electric gear shift(ing) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004797.7A CN108825728A (en) | 2018-08-30 | 2018-08-30 | A kind of no gear shift power interruption two-level electric gear shift(ing) |
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| Publication Number | Publication Date |
|---|---|
| CN108825728A true CN108825728A (en) | 2018-11-16 |
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|---|---|---|---|
| CN201811004797.7A Pending CN108825728A (en) | 2018-08-30 | 2018-08-30 | A kind of no gear shift power interruption two-level electric gear shift(ing) |
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Cited By (6)
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| CN110513445A (en) * | 2019-08-23 | 2019-11-29 | 吴有智 | Electric vehicle transmission |
| CN112303195A (en) * | 2020-11-19 | 2021-02-02 | 特百佳动力科技有限公司 | Electric loader transmission system and electric drive assembly |
| CN112343982A (en) * | 2020-09-17 | 2021-02-09 | 燕山大学 | Torque-assisted two-gear mechanical automatic transmission |
| CN112895878A (en) * | 2021-03-26 | 2021-06-04 | 重庆青山工业有限责任公司 | Longitudinally-arranged double-motor hybrid power transmission device |
| WO2021258361A1 (en) * | 2020-06-24 | 2021-12-30 | 华为数字能源技术有限公司 | Transmission and automobile |
| WO2022105191A1 (en) * | 2020-11-17 | 2022-05-27 | 华为数字能源技术有限公司 | Two-speed transmission of electric vehicle, and electric vehicle |
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| WO2021258361A1 (en) * | 2020-06-24 | 2021-12-30 | 华为数字能源技术有限公司 | Transmission and automobile |
| CN114096766A (en) * | 2020-06-24 | 2022-02-25 | 华为数字能源技术有限公司 | Transmission and automobile |
| CN112343982A (en) * | 2020-09-17 | 2021-02-09 | 燕山大学 | Torque-assisted two-gear mechanical automatic transmission |
| WO2022105191A1 (en) * | 2020-11-17 | 2022-05-27 | 华为数字能源技术有限公司 | Two-speed transmission of electric vehicle, and electric vehicle |
| EP4227554A4 (en) * | 2020-11-17 | 2024-04-17 | Huawei Digital Power Tech Co Ltd | Two-speed transmission of electric vehicle, and electric vehicle |
| CN112303195A (en) * | 2020-11-19 | 2021-02-02 | 特百佳动力科技有限公司 | Electric loader transmission system and electric drive assembly |
| CN112895878A (en) * | 2021-03-26 | 2021-06-04 | 重庆青山工业有限责任公司 | Longitudinally-arranged double-motor hybrid power transmission device |
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