Battery quick-change device, electric vehicle and quick-change method

Abstract

The present invention discloses a battery quick-change device, an electric vehicle and a quick-change method. The battery quick-change device includes a locking shaft mechanism, a locking limit block, a locking member, a driving assembly, an elastic reset member and a state detection device. The locking shaft mechanism is fixedly connected to the battery pack bracket. The locking limit block is fixedly connected to the vehicle body, and a locking groove is provided on the locking limit block. The locking shaft mechanism can slide in the locking groove to reach the locking position. The locking member is rotatably connected to the locking limit block, and a buckle is provided on the locking member. When the locking member is in a locked working state, the buckle is engaged with the locking shaft mechanism to fix the locking shaft mechanism in the locked position. The driving assembly is used to drive the locking member to rotate. One end of the elastic reset member is fixedly connected to the vehicle body, and the other end is connected to the locking member. When the locking member is in an unlocked working state, the elastic reset member is in a compressed state. The state detection device can detect the working state of the locking member. The above-mentioned battery quick-change device has a simple structure and a fast battery replacement speed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle battery replacement, and in particular to a battery quick-change device, an electric vehicle and a quick-change method. Background Art

[0002] The energy supply mode of electric vehicles is mainly based on charging and battery replacement. "Battery replacement" means replacing the pre-charged power battery with the power battery that needs to be replenished on the new energy vehicle to achieve the purpose of rapid energy replenishment. The advantages of the battery replacement mode are that it can shorten the replenishment time, improve efficiency, extend battery life, and eliminate the range shortcoming.

[0003] At present, the battery replacement mechanism of electric vehicles is mainly divided into two types: bolt-type fixing and snap-on fixing, and both need to be matched with corresponding battery replacement stations. The battery replacement unlocking and locking process is achieved through special battery replacement equipment, resulting in problems such as poor versatility of battery replacement stations and waste of battery replacement station resources.

[0004] Therefore, there is an urgent need to provide a battery quick-change device to solve the above problems. Summary of the invention

[0005] According to one aspect of the present invention, the present invention provides a battery quick-change device that can complete locking and unlocking without the need for special battery-changing equipment and battery-changing tools, has a simple structure, and a fast battery-changing speed.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A battery quick-change device, comprising:

[0008] A shaft locking mechanism, fixedly connected to the battery pack bracket;

[0009] A locking limit block is fixedly connected to the vehicle body, the locking limit block is provided with a locking groove, the locking groove has a locking position, and the locking shaft mechanism can slide in the locking groove to reach the locking position;

[0010] A locking member is rotatably connected to the locking limit block, a buckle is provided on the locking member, and the locking member has a locking working state and an unlocking working state. When the locking member is in the locking working state, the buckle is engaged with the locking shaft mechanism to fix the locking shaft mechanism in the locking position;

[0011] A driving assembly, wherein an output end of the driving assembly can drive the locking member to rotate;

[0012] an elastic return member, one end of which is fixedly connected to the vehicle body, and the other end of which is connected to the locking member, and when the locking member is in the unlocking working state, the elastic return member is in a compressed state;

[0013] A state detection device is arranged on the vehicle body, and the state detection device can detect the working state of the locking member.

[0014] Optionally, the driving assembly comprises:

[0015] An unlocking link, rotatably connected to the vehicle body, wherein rotating the unlocking link can drive the locking member to rotate, so that the locking member changes from the locking working state to the unlocking working state;

[0016] A driving member, wherein an output end of the driving member is connected to the unlocking connecting rod and is used to drive the unlocking connecting rod to rotate.

[0017] Optionally, the unlocking link is rotationally connected to the vehicle body via a first rotating shaft.

[0018] Optionally, the state detection device includes a first locking limit sensor, a second locking limit sensor, a first unlocking limit sensor, and a second unlocking limit sensor;

[0019] When the locking member is in the locking working state, the first locking limit sensor contacts the first side wall of the unlocking link, the second locking limit sensor contacts the first side wall of the locking member, and the first side wall of the locking member is close to the unlocking link;

[0020] When the locking member is in the unlocking working state, the first unlocking limit sensor contacts the second side wall of the unlocking link, the second unlocking limit sensor contacts the second side wall of the locking member, and the second side wall of the locking member is connected to the elastic reset member.

[0021] Optionally, the first locking limit sensor, the second locking limit sensor, the first unlocking limit sensor and the second unlocking limit sensor are all pressure sensors.

[0022] Optionally, the shaft locking mechanism includes a locking shaft and a roller;

[0023] The lock shaft is fixedly connected to the battery pack bracket, the roller is rotatably connected to the lock shaft, and the roller can slide in the locking groove to reach the locking position.

[0024] Optionally, the diameter of the roller is equal to the width of the locking groove.

[0025] According to another aspect of the present invention, the present invention further provides an electric vehicle, comprising a vehicle body, a battery pack bracket and the above-mentioned battery quick-change device.

[0026] According to another aspect of the present invention, the present invention further provides an electric vehicle quick-change method, which is implemented based on the above-mentioned battery quick-change device and includes an unlocking method and a locking method;

[0027] The unlocking method comprises the following steps:

[0028] The controller obtains the unlock request;

[0029] Detecting signal states of a first locking limit sensor and a second locking limit sensor;

[0030] If the first locking limit sensor does not contact the first side wall of the unlocking link, and / or the second locking limit sensor does not contact the first side wall of the locking member, an unlocking failure signal is transmitted to the controller, and unlocking is completed;

[0031] If the first locking limit sensor contacts the first side wall of the unlocking link, and the second locking limit sensor contacts the first side wall of the locking member, the driving assembly is controlled to drive the locking member to rotate to unlock;

[0032] When the unlocking time reaches a first preset time, detecting the signal states of the first unlocking limit sensor and the second unlocking limit sensor;

[0033] If the first unlocking limit sensor does not contact the second side wall of the unlocking link, and / or the second unlocking limit sensor does not contact the second side wall of the locking member, an unlocking failure signal is transmitted to the controller, and unlocking is completed;

[0034] If the first unlocking limit sensor contacts the second side wall of the unlocking link, and the second unlocking limit sensor contacts the second side wall of the locking member, an unlocking success signal is transmitted to the controller, and unlocking is completed;

[0035] The locking method comprises the following steps:

[0036] The controller obtains a lock request;

[0037] Detecting the signal status of the first unlocking limit sensor and the second unlocking limit sensor;

[0038] If the first unlocking limit sensor does not contact the second side wall of the unlocking link, and / or the second unlocking limit sensor does not contact the second side wall of the locking member, a locking failure signal is transmitted to the controller, and locking ends;

[0039] If the first unlocking limit sensor contacts the second side wall of the unlocking link, and the second unlocking limit sensor contacts the second side wall of the locking member, the driving assembly is controlled to move away from the locking member, and the elastic reset member is reset under the action of its own elastic restoring force to perform locking;

[0040] When the locking time reaches a second preset time, detecting the signal states of the first locking limit sensor and the second locking limit sensor;

[0041] If the first locking limit sensor does not contact the first side wall of the unlocking link, and / or the second locking limit sensor does not contact the first side wall of the locking member, a locking failure signal is transmitted to the controller, and unlocking is completed;

[0042] If the first locking limit sensor contacts the first side wall of the unlocking link, and the second locking limit sensor contacts the first side wall of the locking member, a locking success signal is transmitted to the controller, and locking is completed.

[0043] Optionally, the first preset time is 3s-7s, and the second preset time is 3s-7s.

[0044] The beneficial effects of the present invention are:

[0045] The present invention provides a battery quick-change device, including a locking shaft mechanism, a locking limit block, a locking member, a driving assembly, an elastic reset member, and a status detection device. When unlocking, the driving assembly drives the locking member to rotate so that the buckle on the locking member disengages from the locking shaft mechanism. At this time, the locking member will compress the elastic reset member due to the rotation. When locking, the driving assembly is away from the locking member, and the elastic reset member pushes the locking member to rotate in the opposite direction of unlocking under the action of its own elastic restoring force to complete the locking. By setting the elastic reset member, the self-locking of the above-mentioned battery quick-change device can be achieved. At the same time, the above-mentioned battery quick-change device can achieve locking and unlocking without the use of special battery replacement equipment and battery replacement tools. After unlocking, only ordinary lifting equipment needs to be used to complete the battery replacement. The battery replacement speed is fast, the structure is simple, and the locking reliability is high.

[0046] By providing a status detection device, the working status of the locking member can be detected, thereby improving the intelligence of the above-mentioned battery quick-change device and further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 A schematic diagram of the structure of a battery quick-change device provided in an embodiment of the present invention Figure 1 (The locking member is in the locked working state);

[0048] Figure 2 A schematic diagram of the structure of a battery quick-change device provided in an embodiment of the present invention Figure 2 (The locking member is in unlocked working state);

[0049] Figure 3 A schematic diagram of the structure of a shaft locking mechanism provided in an embodiment of the present invention;

[0050] Figure 4 An unlocking flow chart provided for an embodiment of the present invention;

[0051] Figure 5 A locking flow chart provided for an embodiment of the present invention.

[0052] In the figure:

[0053] 100, locking shaft mechanism; 110, locking shaft; 120, roller; 200, locking limit block; 210, locking groove; 300, vehicle body; 400, locking member; 410, buckle; 500, driving assembly; 510, unlocking link; 520, first rotating shaft; 600, elastic return member; 710, first locking limit sensor; 720, second locking limit sensor; 730, first unlocking limit sensor; 740, second unlocking limit sensor; 800, second rotating shaft; 900, battery pack bracket. DETAILED DESCRIPTION

[0054] The technical solution of the present invention will be described clearly and completely below 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 creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0058] The present invention provides a battery quick-change device, which can complete locking and unlocking without special battery-changing equipment and battery-changing tools, has a simple structure and a fast battery-changing speed.

[0059] Specifically, Figure 1-3As shown, the battery quick-change device includes a locking shaft mechanism 100, a locking limit block 200, a locking member 400, a driving assembly 500, an elastic reset member 600 and a state detection device. Among them, the locking shaft mechanism 100 is fixedly connected to the battery pack bracket 900, and the battery pack bracket 900 is installed on the vehicle body 300 through the locking shaft mechanism 100. The locking limit block 200 is fixed on the vehicle body 300, and the locking limit block 200 can be fixed by welding so that the locking limit block 200 and the vehicle body 300 are relatively stationary. The locking limit block 200 is provided with a locking groove 210, and the locking groove 210 is provided with a locking position. The locking shaft mechanism 100 can slide in the locking groove 210 and slide to the locking position. The locking member 400 is rotatably connected to the locking limit block 200, and the locking member 400 is provided with a buckle 410. The locking member 400 has two working states, namely a locked working state and an unlocked working state. When the locking member 400 is in the locked working state, the buckle 410 is engaged with the locking shaft mechanism 100, fixing the locking shaft mechanism 100 in the locked position in the locking groove 210, so that the locking shaft mechanism 100 cannot move along the X-axis direction, the Y-axis direction and the Z-axis direction, thereby achieving the purpose of installing the battery pack on the vehicle body 300. When the locking member 400 is in the unlocked working state, the buckle 410 is disengaged from the locking shaft mechanism 100, and the locking mechanism can slide out of the locking groove 210 of the locking limit block 200, thereby achieving the purpose of disengaging the battery pack from the vehicle body 300. The output end of the drive assembly 500 can drive the locking member 400 to rotate, so as to switch the locking member 400 from the locked working state to the unlocked working state. In the XZ plane, the locking member 400 needs to rotate in the clockwise direction to switch from the locked working state to the unlocked working state, and the locking member 400 needs to rotate in the counterclockwise direction to switch from the unlocked working state to the locked working state. One end of the elastic reset member 600 is fixedly connected to the vehicle body 300, and the other end is connected to the locking member 400. When the locking member 400 switches from the locked working state to the unlocked working state, the elastic reset member 600 is continuously compressed. Therefore, when the locking member 400 switches from the unlocked working state back to the locked working state, it is only necessary to cancel the force applied by the driving assembly 500 to the locking member 400, so that the elastic reset member 600 drives the locking member 400 to rotate counterclockwise under the action of its own elastic restoring force, so that the buckle 410 can be engaged with the locking shaft mechanism 100 to achieve self-locking, thereby reducing the labor intensity of the staff. The state detection mechanism can detect the working state of the locking member 400 to transmit the working state of the locking member 400 to the user, so that the user can easily obtain the progress of the battery replacement, thereby improving the intelligence of the above-mentioned battery quick replacement device and improving the user experience.

[0060] Further, see Figure 1 and Figure 2, the driving assembly 500 includes an unlocking link 510 and a driving member. The unlocking link 510 is rotatably connected to the vehicle body 300, and the output end of the driving member is connected to the unlocking link 510 to drive the unlocking link 510 to rotate, and the rotation of the unlocking link 510 can drive the locking member 400 to rotate. In this embodiment, when the unlocking link 510 rotates to a horizontal position, that is, rotates to be parallel to the X-axis, the locking member 400 is in an unlocking working state, and when the unlocking link 510 does not contact the locking member 400, the locking member 400 is in a locking working state. The driving member can be a motor or other device capable of outputting rotational motion, which can be selected according to actual needs.

[0061] Optionally, the unlocking link 510 can be rotatably connected to the vehicle body 300 via a first rotating shaft 520. By providing the first rotating shaft 520, the smoothness and stability of the rotation of the unlocking link 510 can be improved, and the reliability of the operation of the unlocking link 510 can be ensured. The first rotating shaft 520 can be connected to the end of the unlocking link 510, or to the middle of the unlocking link 510, and can be provided according to actual needs. Similarly, the locking member 400 can be rotatably connected to the locking limit block 200 via a second rotating shaft 800. In this embodiment, the locking member 400 is provided above the locking limit block 200 along the Y-axis direction.

[0062] Furthermore, the state detection mechanism includes a first locking limit sensor 710, a second locking limit sensor 720, a first unlocking limit sensor 730 and a second unlocking limit sensor 740. Figure 2 As shown, for ease of understanding, in this embodiment, the side wall above the unlocking link 510 is defined as the first side wall of the unlocking link 510, and the side wall below the unlocking link 510 is defined as the second side wall of the unlocking link 510. Figure 1 As shown, the side wall on the right side of the locking member 400 is positioned as the first side wall of the locking member 400, and the side wall on the left side of the locking member 400 is defined as the second side wall of the locking member 400. When the locking member 400 is in the locked working state, the first locking limit sensor 710 contacts the first side edge of the unlocking link 510, and the second locking limit sensor 720 contacts the first side wall of the locking member 400. At this time, the first locking limit sensor 710 and the second locking limit sensor transmit the signal of the locked state to the controller of the vehicle body 300. When the locking member 400 is in the unlocked working state, the first unlocking limit sensor 730 contacts the second side wall of the unlocking link 510, and the second unlocking limit sensor 740 contacts the second side wall of the locking member 400. At this time, the first unlocking limit sensor 730 and the second unlocking limit sensor 740 transmit the unlocking state signal to the controller of the vehicle body 300.

[0063] Preferably, the first locking limit sensor 710, the second locking limit sensor 720, the first unlocking limit sensor 730 and the second unlocking limit sensor 740 can be pressure sensors, proximity sensors, or other sensors, which can be selected according to actual needs.

[0064] Further, see Figure 1 and Figure 2 In this embodiment, the locking limit block 200 is an inverted U-shaped structure, and the locking member 400 is also an inverted U-shaped structure. The top of the locking groove 210 of the inverted U-shaped locking limit block 200 is the locking position. The buckle 410 is set on a side wall of the locking member 400. More preferably, the buckle 410 can be set perpendicular to the side wall of the locking member 400, and the center of the second rotating shaft 800 is set on the central axis of the locking groove 210. This structural design enables the buckle 410 to better limit the locking shaft mechanism 100 when the locking member 400 is in the locking working state.

[0065] Preferably, the width (length along the X-axis direction) of the locking limit block 200 can be set to be the same as the width (length along the X-axis direction) of the locking member 400, and when the locking member 400 is in the locking working state, the locking member 400 overlaps with the side wall of the locking limit block 200, so that the structure of the above-mentioned battery quick-change device is more compact.

[0066] Preferably, if Figure 3 As shown, the locking shaft mechanism 100 includes a locking shaft 110 and a roller 120. The locking shaft 110 is fixedly connected to the battery pack bracket 900, and the roller 120 is rotationally connected to the locking shaft 110. The roller 120 can slide in the locking groove 210 to reach the locking position. By setting the roller 120 and the locking shaft 110 to be rotationally connected, in the process of the buckle 410 on the locking member 400 being engaged with the roller 120, the sliding friction between the buckle 410 and the roller 120 can be converted into rolling friction, thereby reducing the friction between the roller 120 and the buckle 410, which is beneficial to protecting the roller 120 and the buckle 410 and extending the service life of the above-mentioned battery quick-change device.

[0067] Furthermore, in order to enable the groove wall of the locking groove 210 to limit the displacement of the roller 120 along the X-axis direction, the diameter of the roller 120 is set equal to the width of the locking groove 210 to prevent the roller 120 from shaking in the locking groove 210, thereby improving the stability of the battery pack installation.

[0068] The present invention also provides an electric vehicle, comprising a vehicle body 300, a battery pack bracket 900 and the above-mentioned battery quick-change device. The above-mentioned electric vehicle has the advantages of fast battery replacement speed and can achieve battery replacement without special battery replacement stations or battery replacement equipment.

[0069] The present invention also provides a quick-change method for an electric vehicle, which is based on the above-mentioned battery quick-change device and includes an unlocking method and a locking method.

[0070] like Figure 4 As shown, the unlocking method includes the following steps:

[0071] The unlocking method includes the following steps:

[0072] S100: The vehicle body controller obtains an unlocking request.

[0073] When replacing the battery, the user needs to send an unlocking request to the body controller. After successful unlocking, the battery pack bracket 900 is removed and replaced with a fully charged battery.

[0074] S200 : Detecting the signal states of the first locking limit sensor 710 and the second locking limit sensor 720 .

[0075] Before unlocking, it is necessary to confirm whether the battery pack bracket 900 is in a locked state. Only a battery pack in a locked state can be subsequently unlocked.

[0076] If the first locking limit sensor 710 does not contact the first side wall of the unlocking link 510, and / or the second locking limit sensor 720 does not contact the first side wall of the locking member 400, an unlocking failure signal is transmitted to the body controller and unlocking is completed.

[0077] This situation indicates that the locking member 400 is not in a normal locking state, the battery quick-change device is malfunctioning, and subsequent unlocking work cannot be performed. Therefore, the unlocking is completed, and the battery quick-change device can be repaired afterwards.

[0078] If the first locking limit sensor 710 contacts the first side wall of the unlocking link 510, and the second locking limit sensor 720 contacts the first side wall of the locking member 400, the battery exchange controller controls the driving assembly 500 to drive the locking member 400 to rotate for unlocking.

[0079] This situation indicates that the locking member 400 is in a normal locking state, and the battery quick-change device functions normally and can be unlocked.

[0080] S300: When the unlocking time reaches the first preset time, the signal states of the first unlocking limit sensor 730 and the second unlocking limit sensor 740 are detected.

[0081] When the locking member 400 is in a normal locking state, the battery replacement controller controls the battery quick-change device to unlock. After the first preset unlocking time, it is detected whether the unlocking is successful. The first preset time can be 3s-7s, and for example, it can be 3s, 4s, 5s, 6s or 7s, etc., which can be set according to the specific situation.

[0082] If the first unlocking limit sensor 730 does not contact the second side wall of the unlocking link 510, and / or the second unlocking limit sensor 740 does not contact the second side wall of the locking member 400, an unlocking failure signal is transmitted to the body controller and the unlocking is completed.

[0083] This situation indicates that the locking member 400 has not reached the position of the unlocking working state, and the unlocking function of the above-mentioned battery quick-change device is abnormal, and subsequent maintenance is required.

[0084] If the first unlocking limit sensor 730 contacts the second side wall of the unlocking link 510 and the second unlocking limit sensor 740 contacts the second side wall of the locking member 400, an unlocking success signal is transmitted to the vehicle body controller and the unlocking is completed.

[0085] This situation indicates that the battery quick-change device functions normally and is unlocked successfully. At this time, the battery pack bracket 900 can be removed using a common lifting device to replace the battery.

[0086] like Figure 5 As shown, the locking method includes the following steps:

[0087] S100: The vehicle body controller obtains a locking request.

[0088] After the battery replacement is completed, the replaced fully charged battery pack needs to be installed on the vehicle body 300. At this time, the user needs to send a locking request to the vehicle body controller. After the locking is successful, the installation of the battery pack is completed.

[0089] S200 : Detecting the signal states of the first unlocking limit sensor 730 and the second unlocking limit sensor 740 .

[0090] Before locking, it is necessary to confirm whether the battery pack bracket 900 is in an unlocked state. Only a battery pack in an unlocked state can be subsequently locked.

[0091] If the first unlocking limit sensor 730 does not contact the second side wall of the unlocking link 510, and / or the second unlocking limit sensor 740 does not contact the second side wall of the locking member 400, a locking failure signal is transmitted to the vehicle body controller and locking ends.

[0092] This situation indicates that the locking member 400 is not in a normal unlocked state, the battery quick-change device is malfunctioning, and subsequent locking work cannot be performed. Therefore, the locking is completed and the battery quick-change device can be repaired afterwards.

[0093] If the first unlocking limit sensor 730 contacts the second side wall of the unlocking link 510, and the second unlocking limit sensor 740 contacts the second side wall of the locking member 400, the battery exchange controller controls the driving assembly 500 to move away from the locking member 400, and the elastic reset member 600 resets under the action of its own elastic restoring force to lock.

[0094] This situation indicates that the locking member 400 is in a normal unlocked state, and the battery quick-change device functions normally and can be locked.

[0095] S300: When the locking time reaches a second preset time, the signal states of the first locking limit sensor 710 and the second locking limit sensor 720 are detected.

[0096] When the locking member 400 is in a normal unlocked state, the battery replacement controller controls the battery quick-change device to lock. After locking for the second preset time, it is detected whether the locking is successful. The second preset time can be 3s-7s, and for example, it can be 3s, 4s, 5s, 6s or 7s, etc., which can be set according to the specific situation.

[0097] If the first locking limit sensor 710 does not contact the first side wall of the unlocking link 510, and / or the second locking limit sensor 720 does not contact the first side wall of the locking member 400, a locking failure signal is transmitted to the body controller and unlocking is completed.

[0098] This situation indicates that the locking member 400 has not reached the position of the locking working state, and the locking function of the above-mentioned battery quick-change device is abnormal, and subsequent maintenance is required.

[0099] If the first locking limit sensor 710 contacts the first side wall of the unlocking link 510 and the second locking limit sensor 720 contacts the first side wall of the locking member 400 , a locking success signal is transmitted to the vehicle body controller and locking is completed.

[0100] This indicates that the battery quick-change device is functioning normally and has been locked successfully. The battery has been replaced.

[0101] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery quick-change device, characterized in that: include: A shaft locking mechanism (100) fixedly connected to the battery pack bracket (900); A locking limit block (200) is fixedly connected to the vehicle body (300), the locking limit block (200) being provided with a locking groove (210), the locking groove (210) having a locking position, and the shaft locking mechanism (100) can slide in the locking groove (210) to reach the locking position; A locking member (400) is rotatably connected to the locking limit block (200); a buckle (410) is provided on the locking member (400); the locking member (400) has a locking working state and an unlocking working state; when the locking member (400) is in the locking working state, the buckle (410) is engaged with the shaft locking mechanism (100) to fix the shaft locking mechanism (100) in the locking position; A driving component (500), wherein an output end of the driving component (500) is capable of driving the locking member (400) to rotate; an elastic return member (600), one end of the elastic return member (600) being fixedly connected to the vehicle body (300), and the other end of the elastic return member (600) being connected to the locking member (400), and when the locking member (400) is in the unlocking working state, the elastic return member (600) is in a compressed state; a state detection device, arranged on the vehicle body (300), the state detection device being capable of detecting the working state of the locking member (400); The driving assembly (500) comprises: An unlocking link (510) is rotatably connected to the vehicle body (300), and rotation of the unlocking link (510) can drive the locking member (400) to rotate, so that the locking member (400) changes from the locking working state to the unlocking working state; A driving member, the output end of which is connected to the unlocking connecting rod (510) and is used to drive the unlocking connecting rod (510) to rotate; The state detection device comprises a first locking limit sensor (710), a second locking limit sensor (720), a first unlocking limit sensor (730) and a second unlocking limit sensor (740); When the locking member (400) is in the locking working state, the first locking limit sensor (710) contacts the first side wall of the unlocking link (510), the second locking limit sensor (720) contacts the first side wall of the locking member (400), and the first side wall of the locking member (400) is close to the unlocking link (510); When the locking member (400) is in the unlocking working state, the first unlocking limit sensor (730) contacts the second side wall of the unlocking link (510), the second unlocking limit sensor (740) contacts the second side wall of the locking member (400), and the second side wall of the locking member (400) is connected to the elastic return member (600).

2. The battery quick-change device according to claim 1, characterized in that: The unlocking link (510) is rotationally connected to the vehicle body (300) via a first rotating shaft (520).

3. The battery quick-change device according to claim 1, characterized in that: The first locking limit sensor (710), the second locking limit sensor (720), the first unlocking limit sensor (730) and the second unlocking limit sensor (740) are all pressure sensors.

4. The battery quick-change device according to any one of claims 1 to 3, characterized in that: The shaft locking mechanism (100) comprises a shaft locking mechanism (110) and a roller (120); The locking shaft (110) is fixedly connected to the battery pack bracket (900), the roller (120) is rotatably connected to the locking shaft (110), and the roller (120) can slide in the locking groove (210) to reach the locking position.

5. The battery quick-change device according to claim 4, characterized in that: The diameter of the roller (120) is equal to the width of the locking groove (210).

6. An electric vehicle, characterized in that: It comprises a vehicle body (300), a battery pack bracket (900) and a battery quick-change device according to any one of claims 1 to 5.

7. A quick-change method for electric vehicles, the quick-change method for electric vehicles is implemented based on the battery quick-change device according to any one of claims 1 to 5, characterized in that: Including unlocking method and locking method; The unlocking method comprises the following steps: The body controller obtains the unlock request; Detecting the signal states of the first locking limit sensor (710) and the second locking limit sensor (720); If the first locking limit sensor (710) does not contact the first side wall of the unlocking link (510), and / or the second locking limit sensor (720) does not contact the first side wall of the locking member (400), an unlocking failure signal is transmitted to the vehicle body controller, and unlocking is completed; If the first locking limit sensor (710) contacts the first side wall of the unlocking link (510), and the second locking limit sensor (720) contacts the first side wall of the locking member (400), the battery exchange controller controls the drive component (500) to drive the locking member (400) to rotate for unlocking; When the unlocking time reaches a first preset time, detecting the signal states of the first unlocking limit sensor (730) and the second unlocking limit sensor (740); If the first unlocking limit sensor (730) does not contact the second side wall of the unlocking link (510), and / or the second unlocking limit sensor (740) does not contact the second side wall of the locking member (400), an unlocking failure signal is transmitted to the vehicle body controller, and unlocking is completed; If the first unlocking limit sensor (730) contacts the second side wall of the unlocking link (510), and the second unlocking limit sensor (740) contacts the second side wall of the locking member (400), an unlocking success signal is transmitted to the vehicle body controller, and unlocking is completed; The locking method comprises the following steps: The vehicle body controller obtains a locking request; Detecting the signal states of the first unlocking limit sensor (730) and the second unlocking limit sensor (740); If the first unlocking limit sensor (730) does not contact the second side wall of the unlocking link (510), and / or the second unlocking limit sensor (740) does not contact the second side wall of the locking member (400), a locking failure signal is transmitted to the vehicle body controller, and locking ends; If the first unlocking limit sensor (730) contacts the second side wall of the unlocking link (510), and the second unlocking limit sensor (740) contacts the second side wall of the locking member (400), the power exchange controller controls the driving assembly (500) to move away from the locking member (400), and the elastic reset member (600) resets under the action of its own elastic restoring force to lock; When the locking time reaches a second preset time, detecting the signal states of the first locking limit sensor (710) and the second locking limit sensor (720); If the first locking limit sensor (710) does not contact the first side wall of the unlocking link (510), and / or the second locking limit sensor (720) does not contact the first side wall of the locking member (400), a locking failure signal is transmitted to the vehicle body controller, and unlocking is completed; If the first locking limit sensor (710) contacts the first side wall of the unlocking link (510), and the second locking limit sensor (720) contacts the first side wall of the locking member (400), a locking success signal is transmitted to the vehicle body controller, and locking is completed.

8. The electric vehicle quick-change method according to claim 7, characterized in that: The first preset time is 3s-7s, and the second preset time is 3s-7s.

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