CN113547906A - Locking device, electric connecting device, battery end connecting device, electric automobile and battery pack assembly - Google Patents
Locking device, electric connecting device, battery end connecting device, electric automobile and battery pack assembly Download PDFInfo
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- CN113547906A CN113547906A CN202010254766.8A CN202010254766A CN113547906A CN 113547906 A CN113547906 A CN 113547906A CN 202010254766 A CN202010254766 A CN 202010254766A CN 113547906 A CN113547906 A CN 113547906A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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Abstract
The invention provides a locking device, an electric connecting device, a battery end connecting device, an electric automobile and a battery pack assembly, wherein the locking device comprises a moving mechanism and a linkage mechanism, the moving mechanism is provided with a locking structure, and the locking structure is used for being matched with a locking connecting part; the locking structure is provided with a starting position and a locking position; the linkage mechanism is connected with the moving mechanism; the battery pack can drive the linkage mechanism to act in the moving process, so that the moving mechanism moves, and the lock connecting part moves to the locking position from the initial position of the locking structure. The locking device guides the battery pack fixed with the locking connecting part to move to a specified position; when the locking device is installed around the locking end connector and the locking connecting part is fixed on the battery end connector of the battery pack, the locking device plays a role in guiding and aligning the battery end connector, and after the battery end connector is completely connected with the locking end connector, the locking device plays a role in locking the battery end connector and the locking end connector.
Description
Technical Field
The invention relates to a locking device and an electric connecting device comprising the same.
The invention also relates to an electric automobile comprising the electric connecting device.
The invention also relates to a battery end connecting device and a battery pack assembly comprising the battery end connecting device.
Background
When the battery box is installed on an electric automobile or other devices, the electric connector of the battery box needs to be connected with the electric connector of the electric automobile or other devices. In the design of the existing battery box, when the electric connector of the battery box is connected with other electric connectors, the connection firmness degree can be ensured only by the locking force of the battery box, and the relative position of the electric connector of the battery box and the other electric connectors is also influenced by the tolerance of the battery box. How to ensure the stability when the electric connector of the battery box is connected with other electric connectors is a problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to overcome the defect that the stability of an electric connector and other connectors of a battery box in the prior art is not enough, and provides a locking device, an electric connecting device, a battery end connecting device, an electric automobile and a battery pack assembly.
The invention solves the technical problems through the following technical scheme:
the invention provides a locking device, which is used for matching with a lock connecting part, wherein the lock connecting part is fixedly connected with a battery pack, and the locking device comprises:
the moving mechanism is provided with a locking structure, and the locking structure is used for being matched with the lock connecting part; the locking structure has a starting position and a locking position;
the linkage mechanism is connected with the moving mechanism; the battery pack can drive the linkage mechanism to act in the moving process, so that the moving mechanism moves, and the lock connecting part moves to the locking position from the initial position of the locking structure.
In the technical scheme, the battery pack can drive the linkage mechanism to act in the process of moving to the locking device, so that the lock connecting part fixed with the battery pack can move to the locking position from the initial position of the locking structure, and the battery pack fixed with the lock connecting part is guided to move to the designated position.
Preferably, the locking structure is a sliding groove, the lock connecting portion is a lock pin, and the lock pin can slide in the sliding groove along the extending direction of the sliding groove.
In the technical scheme, the battery pack fixed with the lock pin also slides along the extending direction of the sliding chute by the sliding of the lock pin in the sliding chute; when the lock pin reaches the lock position, the battery pack also reaches the specified position.
Preferably, the extending direction of the sliding groove and the moving direction of the battery pack form an included angle, the end, close to the battery pack, of the sliding groove is the starting position, and the end, far away from the battery pack, of the sliding groove is the locking position.
In the technical scheme, through the arrangement of the sliding groove, the locking device is gradually close to the battery pack in the process that the locking pin moves from the initial position of the sliding groove to the locking position.
Preferably, a limiting region protruding in the direction of the battery pack is disposed at the locking position of the sliding groove, and the lock pin can fall into the limiting region.
In the technical scheme, after the lock pin falls into the limiting area, the lock pin is limited in the limiting area, namely in the locking position of the sliding groove, so that the effect of locking the position of the battery pack is achieved.
Preferably, the moving mechanism is provided with a guide groove extending from a surface of the moving mechanism to a start position of the slide groove, and the lock pin is movable along the guide groove to the start position of the slide groove.
In this technical scheme, the guide way plays the effect of direction, makes the lockpin when contacting moving mechanism, can smoothly be guided to move to the initial position of spout.
Preferably, the locking pin comprises a pin column and a pin flange protruding outwards along the circumferential direction of the pin column; the inner circumferential surface of the sliding groove forms a first inner circumferential surface extending along the circumferential direction and a second inner circumferential surface extending along the circumferential direction, the first inner circumferential surface is matched with the outer circumferential surface of the pin column, and the second inner circumferential surface is matched with the outer circumferential surface of the pin flange; when the lock pin slides in the sliding groove, the pin column moves in the groove formed in the first inner circumferential surface, and the pin flange moves in the groove formed in the second inner circumferential surface.
In the technical scheme, a step surface is formed between the first inner peripheral surface and the second inner peripheral surface; when the lock pin slides in the sliding groove, the pin flange is limited by the step surface, so that the pin flange can only move in the groove formed by the second inner circumferential surface, and the lock pin is prevented from being separated from the sliding groove in the sliding process.
Preferably, the linkage mechanism comprises:
the end, facing the battery pack, of the first rack can be abutted against the battery pack in the moving process of the battery pack to be close to the locking device;
the first gear is meshed with the first rack;
the first gear drives the second gear to rotate;
and the second rack is meshed with the second gear, and the second rack is fixed with the moving mechanism.
In the technical scheme, the transmission structure of the rack and the gear enables the moving mechanism and the lock connecting part to move relatively in the moving process of the battery pack, so that the lock connecting part moves from the initial position of the locking structure to the locking position.
Preferably, the extending direction of the first rack is parallel to the moving direction of the battery pack.
In this technical scheme, the extending direction of first rack is on a parallel with the moving direction of battery package, makes the displacement of battery package directly turn into the displacement of first rack, reaches better linkage effect.
Preferably, the linkage mechanism further includes a pivot, the first gear and the second gear are respectively fixed at two ends of the pivot, and the first gear and the second gear are coaxially arranged.
In this technical scheme, first gear, the coaxial setting of second gear make first gear, second gear can coaxial rotation.
Preferably, the locking device further comprises a reset mechanism; the reset mechanism moves the moving mechanism to move the lock connecting part out of the locking position of the locking structure.
In this technical scheme, when needs are with carrying out the unblock between locking device and the battery package, canceling release mechanical system makes the lock connecting portion shift out from locking position of locking structure to make the lock connecting portion can break away from moving mechanism, reach the function of unblock.
Preferably, the locking device further comprises a reset mechanism, the reset mechanism is connected with the first rack, and the reset mechanism is used for applying acting force to the first rack, and the acting force enables the first rack to move towards the battery pack.
In the technical scheme, the reset mechanism enables the first rack to move towards the direction opposite to the locking process, and enables the first rack and the first gear to rotate towards the opposite direction, so that the second rack and the moving mechanism move towards the opposite direction, and the lock connecting part can move out from the locking position of the locking structure.
The present invention also provides an electrical connection device comprising:
the locking end connector is used for being connected with a battery end connector, and the battery end connector is fixedly connected with the locking connecting part;
the locking device is as described in the above technical scheme; when the locking end connector is connected with the battery end connector, the locking device is connected with the locking connecting part.
In the technical scheme, the locking device plays a role in guiding and aligning the battery end connector; after the battery end connector and the locking end connector are completely connected, the locking device has the function of locking the battery end connector and the locking end connector mutually.
Preferably, the locking end connector is an electric connector, and the battery end connector is an electric connector; when the lock connecting part moves to the locking position, the lock end connector and the battery end connector are electrically connected.
In the technical scheme, the locking end connector and the battery end connector are reliably electrically connected through the locking device.
Preferably, the number of the moving mechanisms is multiple, and the multiple moving mechanisms are arranged around the locking end connector.
In this technical scheme, through the moving mechanism who encircles the setting of locking end connector, make battery end connector atress balanced, can guarantee the stability that battery end connector removed, make and form good connection between battery end connector and the locking end connector.
Preferably, the number of the locking structures is multiple, and the multiple locking structures are arranged around the locking end connector.
In this technical scheme, through the locking structure who encircles the setting of locking end connector, make battery end connector atress balanced, can guarantee the stability that battery end connector removed, make and form good connection between battery end connector and the locking end connector.
Preferably, the number of the moving mechanisms is even, and the even number of the moving mechanisms are symmetrically arranged on two sides of the locking end connector.
In this technical scheme, through the moving mechanism that the symmetry set up, make battery end connector atress balanced, can guarantee the stability that battery end connector removed, make and form good connection between battery end connector and the locking end connector.
The invention further provides an electric automobile which comprises the electric connecting device.
In this technical scheme, with above-mentioned electric connection device be applied to electric automobile on, can guarantee to install stability and the reliability of being connected between battery package and the battery package fixing base in electric automobile.
The present invention also provides a battery terminal connecting device, comprising:
the battery end connector is used for being connected with the locking end connector;
the lock connecting part is fixed on the battery end connector and is used for being matched with the locking device; when the battery end connector is connected with the locking end connector, the locking connecting part is connected with the locking device.
In the technical scheme, the lock connecting part matched with the locking device plays roles in guiding and aligning the battery end connector; after the battery end connector is completely connected with the locking end connector, the locking device and the locking connecting part have the function of locking the battery end connector and the locking end connector mutually.
Preferably, the number of the lock connecting parts is plural, and the plurality of the lock connecting parts are arranged around the battery end connector.
In this technical scheme, through the lock connecting portion that encircles the setting of battery end connector, make battery end connector atress balanced, can guarantee the stability that battery end connector removed, make and form good connection between battery end connector and the locking end connector.
The invention also provides a battery pack assembly which comprises the battery end connecting device.
In this technical scheme, when being applied to battery package subassembly with above-mentioned battery end connecting device, stability and reliability when can guaranteeing battery package subassembly and other connectors to be connected.
Preferably, the battery pack assembly comprises a battery pack, and the battery end connecting device is located on an end face of the battery pack.
In the technical scheme, in the insertion process of the battery pack, the movement of the battery pack and the locking action of the locking device can be synchronously carried out, so that when the battery pack reaches a specified position, the alignment of the battery end connector and the locking end connector is successful, and the locking device is synchronously locked.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
in the moving process of the battery pack, the locking connecting part fixed with the battery pack can be moved from the initial position of the locking structure to the locking position, so that the battery pack fixed with the locking connecting part is also guided to move to the designated position; when the locking device is installed around the locking end connector and the locking connecting part is fixed on the battery end connector of the battery pack, the locking device plays a role in guiding and aligning the battery end connector, and after the battery end connector is completely connected with the locking end connector, the locking device plays a role in locking the battery end connector and the locking end connector.
Drawings
FIG. 1 is a schematic view of the combination of a locking device and a lock attachment portion of the present invention.
Fig. 2 is a partially enlarged view of the moving mechanism of the locking device shown in fig. 1.
Fig. 3 is a schematic view of a lock coupling portion cooperating with the locking device shown in fig. 1.
Fig. 4 is a schematic structural diagram of the electrical connection device of the present invention.
Fig. 5 is a schematic structural view of the battery terminal connection device of the present invention.
Fig. 6 is a schematic view showing the combination of the electrical connection device shown in fig. 4 and the battery terminal connection device shown in fig. 5.
Fig. 7 is a schematic view of the installation of the battery pack assembly of the present invention.
Description of the reference numerals
The locking device 100, the moving mechanism 1, the locking structure 11, the sliding groove 111, the first inner peripheral surface 112, the second inner peripheral surface 113, the step surface 114, the starting position 12, the locking position 13, the limiting region 14, the guide groove 15, the linkage mechanism 2, the first rack 21, the first gear 22, the second gear 23, the second rack 24, the pivot 25, the reset mechanism 3 and the compression spring 31;
a lock connection portion 200, a lock pin 201, a pin column 202, a pin flange 203;
the locking end connector 300, the battery end connector 400, the electric connecting device 500, the battery end connecting device 600 and the battery pack 700.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1, the present invention provides a locking device 100 for cooperating with a lock connecting part 200, wherein the lock connecting part 200 is fixedly connected with a battery pack. The locking device 100 comprises a moving mechanism 1 and a linkage mechanism 2, wherein the moving mechanism 1 is provided with a locking structure 11, and the locking structure 11 is used for being matched with the lock connecting part 200; the locking structure 11 has a starting position 12 and a locking position 13; the linkage mechanism 2 is connected with the moving mechanism 1; the battery pack can drive the linkage mechanism 2 to act in the moving process, so that the moving mechanism 1 moves, and the lock connecting part 200 moves from the initial position 12 of the locking structure 11 to the locking position 13.
The locking device 100 may be installed around the locking end connector 300, wherein the moving mechanism 2 is directly coupled to the locking end connector 300, and the lock connecting part 200 may be fixed to the battery end connector 400 of the battery pack. And the locking end connector and the battery end connector are matched with each other to realize connection.
The battery pack can drive the linkage mechanism 2 to move in the process of moving to the locking device 100, so that the lock connecting part 200 fixed with the battery pack moves from the initial position 12 to the locking position 13 of the locking structure 11, and the battery pack fixed with the lock connecting part 200 is also guided to move to the designated position. When the lock connecting part 200 moves in the locking structure 11, the lock end connector 300 and the moving mechanism 1 move together in a direction perpendicular to the movement of the battery pack, and finally when the lock connecting part 200 moves to the locking position 13, the battery end connector and the lock end connector are electrically connected, and the lock connecting part 200 and the moving mechanism 1 are locked.
The locking structure 11 is a sliding groove 111, the lock connecting portion 200 is a lock pin 201, and the lock pin 201 can slide in the sliding groove 111 along an extending direction of the sliding groove 111. Through the sliding of the lock pin 201 in the sliding groove 111, the battery pack fixed with the lock pin 201 also slides along the extending direction of the sliding groove 111; when the latch 201 reaches the locking position 13, the battery pack also reaches a designated position where the aforementioned battery end connector and the locking end connector are electrically connected.
As shown in fig. 1, the extending direction of the sliding chute 111 forms an included angle with the moving direction of the battery pack, the end of the sliding chute 111 near the battery pack is a starting position 12, and the end of the sliding chute 111 far from the battery pack is a locking position 13. Through the arrangement of the sliding groove 111, the locking device 100 gradually approaches the battery pack in the process of moving the lock pin 201 from the initial position 12 of the sliding groove 111 to the locking position 13.
As shown in fig. 2, the locking position 13 of the sliding groove 111 is provided with a limiting region 14 protruding toward the battery pack, and the lock pin 201 can fall into the limiting region 14. After the lock pin 201 falls into the limiting region 14, the lock pin 201 is limited in the limiting region 14, i.e. in the locking position 13 of the sliding chute 111, thereby achieving the effect of locking the position of the battery pack. The limiting region 14 may be formed by bending one end of the sliding groove 111 away from the battery pack, specifically, the groove edges on both sides of the sliding groove 111 form a tip portion at the bending position, the tip portion protrudes toward the direction away from the battery pack, so that after the lock pin 201 falls into the limiting region 14, the tip portion forms a resistance to the lock pin 201, and limits the lock pin 201 in the limiting region 14.
As shown in fig. 2, the moving mechanism 1 is provided with a guide groove 15, the guide groove 15 extends from the surface of the moving mechanism 1 to the start position 12 of the slide groove 111, and the lock pin 201 can move along the guide groove 15 to the start position 12 of the slide groove 111. When the lock pin 201 approaches the moving mechanism 1, it first enters the guide groove 15 and moves along the guide groove 15 to the initial position 12 of the slide groove 111. The guide slot 15 is used for guiding the lock pin 201 to move to the initial position 12 of the slide groove 111 when the lock pin contacts the moving mechanism 1.
As shown in fig. 3, the lock pin 201 includes a pin 202 and a pin flange 203 projecting outward in the circumferential direction of the pin 202; as shown in fig. 2, the inner peripheral surface of the chute 111 forms a first inner peripheral surface 112 extending in the circumferential direction and a second inner peripheral surface 113 extending in the circumferential direction, the first inner peripheral surface 112 engaging with the outer peripheral surface of the pin 202, the second inner peripheral surface 113 engaging with the outer peripheral surface of the pin flange 203; when the lock pin 201 slides in the slide groove 111, the pin 202 moves in the groove formed in the first inner peripheral surface 112, and the pin flange 203 moves in the groove formed in the second inner peripheral surface 113. A step surface 114 is formed between the first inner peripheral surface 112 and the second inner peripheral surface 113; when the lock pin 201 slides in the slide groove 111, the pin flange 203 is limited by the step surface 114, so that the pin flange 203 can only move in the groove formed by the second inner peripheral surface 113, and the lock pin 201 is prevented from being separated from the slide groove 111 in the sliding process.
The pin flange 203 of the lock pin 201 shown in fig. 3 is provided at the end of the pin 202. The pin flange 203 may be provided at an intermediate position of the pin 202, in addition to the end of the pin 202. The position of the second inner peripheral surface 113 of the slide groove 111 is set to correspond to the position of the pin flange 203 on the pin 202, and is not limited to the position shown in fig. 2.
The pin flange 203 shown in fig. 3 has a circular disk shape, and one end surface of the pin flange 203 is in contact with the step surface 114 between the first inner circumferential surface 112 and the second inner circumferential surface 113, so that the pin flange 203 can slide on the step surface 114. Besides the disc-shaped pin flange 203, the pin flange 203 having other shapes (such as a pointed shape and a rod shape) can achieve the effect that the pin flange 203 can slide on the step surface 114 and the lock pin 201 is prevented from being separated from the sliding groove 111 in the sliding process as long as the pin flange 203 has a limiting surface which is in contact with the step surface 114.
In the present embodiment, the locking structure 11 is a sliding groove 111, and the lock connecting portion 200 is a lock pin 201. The locking structure 11 and the lock connecting portion 200 may be other combined structures, such as a rail slider structure, a link structure, etc., and any combined structure that can achieve the function of moving the lock connecting portion 200 between the initial position 12 and the locking position 13 of the locking structure 11 may be applied to the locking device 100.
As shown in fig. 1, the linkage mechanism 2 includes a first rack 21, a first gear 22, a second gear 23 and a second rack 24, one end of the first rack 21 facing the battery pack can be abutted against the battery pack in the moving process of the battery pack approaching the locking device 100, the first gear 22 is engaged with the first rack 21, the first gear 22 drives the second gear 23 to rotate, the second rack 24 is engaged with the second gear 23, and the second rack 24 is fixed with the moving mechanism 1.
When the battery pack is close to the locking device 100, the battery pack directly or indirectly abuts against one end of the first rack 21, the first rack 21 moves along with the movement of the battery pack, the first rack 21 drives the first gear 22 to rotate, the first gear 22 drives the second gear 23 to rotate, the second gear 23 drives the second rack 24 and the moving mechanism 1 to move, so that the moving mechanism 1 and the lock connecting part 200 move relative to each other, and the lock connecting part 200 moves from the initial position 12 of the locking structure 11 to the locking position 13.
In order to achieve a better linkage effect, the extending direction of the first rack 21 is parallel to the moving direction of the battery pack, so that the displacement of the battery pack can be directly converted into the displacement of the first rack 21.
The linkage mechanism 2 further includes a pivot 25, the first gear 22 and the second gear 23 are respectively fixed at two ends of the pivot 25, and the first gear 22 and the second gear 23 are coaxially arranged, so that the first gear 22 and the second gear 23 can coaxially rotate.
By providing the linkage mechanism 2, when the battery pack directly or indirectly contacts the end of the first rack 21, the movement of the moving mechanism 1 is driven, so that the lock connecting portion 200 moves from the initial position 12 of the locking structure 11 to the locking position 13. After the lock connecting part 200 enters the locking structure 11, the moving mechanism 1 moves in a direction perpendicular to the moving direction of the battery pack according to the defined direction of the locking structure 11, and finally when the lock connecting part 200 reaches the locking position 13, the lock end connector 300 fixedly connected with the moving mechanism 1 moves to a specified position according to a predetermined path.
As shown in fig. 1, the locking device 100 further comprises a return mechanism 3; the reset mechanism 3 moves the moving mechanism 1 to move the lock connecting portion 200 out of the locking position 13 of the locking structure 11. When the locking device 100 and the battery pack need to be unlocked, the reset mechanism 3 moves the lock connecting portion 200 out of the locking position 13 of the locking structure 11, so that the lock connecting portion 200 can be separated from the moving mechanism 1, and the unlocking function is achieved.
Wherein the reset mechanism 3 may be connected to the first rack 21, the reset mechanism 3 is configured to apply a force to the first rack 21, and the force moves the first rack 21 towards the battery pack. That is, the reset mechanism 3 moves the first rack 21 in the direction opposite to the locking process, and rotates the first rack 21 and the first gear 22 in the opposite direction, so that the second rack 24 and the moving mechanism 1 move in the opposite direction, and the lock connecting portion 200 can move out of the locking position 13 of the lock structure 11 and move to the home position 12.
In order to achieve the above function, the return mechanism 3 may be a compression spring 31, and the compression spring 31 always applies a force to the first rack 21 in the direction of the battery pack. During unlocking, the battery pack no longer applies pressure to the end of the first rack 21, but rather tries to move away from the first rack 21. At this time, the first rack 21 is no longer pressed by the battery pack, and the compression spring 31 moves the first rack 21 in the direction of the battery pack, that is, in the direction opposite to the locking process, so that the second rack 24 and the moving mechanism 1 move in the opposite direction, and the lock connecting portion 200 can move out of the locking position 13 of the locking structure 11.
The return mechanism 3 may have other structures than the compression spring 31, such as a motor having a piston rod, and an electromagnetically controlled plunger. Any mechanism that can move the first rack 21 in the direction opposite to the locking process can be used as the return mechanism 3 to perform the function of moving the lock connecting portion 200 out of the locking position 13 of the locking structure 11.
The locking device 100 can realize that the locking end connector 300 fixedly connected with the moving mechanism 1 moves to the specified position according to the predetermined path after the battery pack is installed in place, the locking end connector 300 is connected with the battery end connector 400 at the specified position, and meanwhile, the locking device 100 is connected with the locking connecting part 200 and locked.
The electrical connection 500 formed by the locking device 100 and the locking end connector 300 is shown in fig. 4. The electric connecting device 500 comprises a locking end connector 300 and a locking device 100, wherein the locking end connector 300 is used for being connected with a battery end connector 400, and the battery end connector 400 is fixedly connected with a locking connecting part 200; when the locking end connector 300 is connected to the battery end connector 400, the locking device 100 is connected to the lock connecting part 200.
The battery terminal connecting device 600 composed of the lock connecting part 200 and the battery terminal connector 400 is shown in fig. 5. The battery end connecting device 600 comprises a battery end connector 400 and a locking connecting part 200, wherein the battery end connector 400 is used for being connected with a locking end connector 300; the lock connecting part 200 is fixed on the battery end connector 400, and the lock connecting part 200 is used for matching with the locking device 100; when the battery end connector 400 is connected to the locking end connector 300, the lock connecting part 200 is connected to the locking device 100.
Fig. 6 is a schematic diagram of an assembly of the electrical connection device 500 and the battery terminal connection device 600. The relative positions of the battery end connector 400 and the locking end connector 300 shown in figure 6 are the positions just after contact. At this time, the lock connecting portion 200 is located at the initial position 12 of the locking structure 11; when the battery end connector 400 gradually moves towards the locking end connector 300, the locking connection part 200 gradually moves to the locking position 13 of the locking structure 11; when the lock connection part 200 reaches the locking position 13, the battery end connector 400 is completely aligned with the lock end connector 300, and good connection is achieved. In this process, the locking device 100 serves to guide and align the battery terminal connector 400; after the battery end connector 400 and the locking end connector 300 are completely connected, the locking device 100 functions to lock the battery end connector 400 and the locking end connector 300 to each other.
The electrical connection device 500 may be installed in a battery holder in an electric vehicle, or in a battery compartment of a battery replacement station. The locking end connector 300 can be an electrical connector, and the battery end connector 400 can also be an electrical connector; when the lock connection part 200 is moved to the locking position 13, the lock end connector 300 and the battery end connector 400 are electrically connected.
As shown in fig. 4 to 6, in order to make the movement of the battery end connector 400 relatively smooth, the number of the moving mechanisms 1 engaged with the lock connecting portion 200 is two, two moving mechanisms 1 are respectively located above and below the lock end connector 300, and the locking structure 11 of each moving mechanism 1 is also two, and two locking structures 11 are respectively located at both ends of the moving mechanism 1. Correspondingly, the number of the lock connection parts 200 is four, and a plurality of the lock connection parts 200 are disposed around the battery terminal connector 400.
Through the above arrangement, the lock connection portion 200 is dispersed at four corners of the battery end connector 400, so that the battery end connector 400 is balanced in stress during the movement of the battery end connector 400 to the lock end connector 300, and the battery end connector 400 can move stably, thereby ensuring the connection stability of the battery end connector 400 when being connected with the lock end connector 300.
The number of the moving mechanisms 1 can be more than two, and a plurality of moving mechanisms 1 are arranged around the locking end connector 300; the number of locking structures 11 may also be other numbers, with a plurality of locking structures 11 disposed around the lock end connector 300. The battery end connector 400 is stressed in a balanced manner by the moving mechanism 1 and/or the locking structure 11 arranged around the locking end connector 300, so that the stability of the movement of the battery end connector 400 can be ensured. Correspondingly, the number of the lock connection parts 200 is plural, and the plurality of lock connection parts 200 are disposed around the battery terminal connector 400.
The number of the moving mechanisms 1 can also be even, and the even number of the moving mechanisms 1 are symmetrically arranged at the two sides of the locking end connector 300. The locking structures 11 on the symmetrically arranged moving mechanism 1 can also be symmetrically arranged. Through the symmetrically arranged moving mechanism 1 and/or the locking structure 11, the stress of the battery end connector 400 is balanced, and the moving stability of the battery end connector 400 can be ensured.
The battery terminal connecting device 600 is mounted on a battery pack 700 to constitute a battery pack assembly, as shown in fig. 7. When the battery pack 700 is a battery compartment that is transversely inserted into a battery holder or a battery replacement station of an electric vehicle, the battery terminal connection device 600 is located on a front end surface of the battery pack 700 in the insertion direction. During the insertion of the battery pack 700, the movement of the battery pack 700 and the locking operation of the locking device 100 are synchronized, so that when the battery pack 700 reaches a predetermined position, the battery terminal connector 400 and the locking terminal connector 300 are aligned and connected, and the locking device 100 is locked synchronously.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (21)
1. A locking device for cooperating with a lock connecting portion, the lock connecting portion and a battery pack fixed connection, the locking device comprising:
the moving mechanism is provided with a locking structure, and the locking structure is used for being matched with the lock connecting part; the locking structure has a starting position and a locking position;
the linkage mechanism is connected with the moving mechanism; the battery pack can drive the linkage mechanism to act in the moving process, so that the moving mechanism moves, and the lock connecting part moves to the locking position from the initial position of the locking structure.
2. The locking device of claim 1, further comprising: the locking structure is a sliding groove, the lock connecting portion is a lock pin, and the lock pin can slide in the sliding groove along the extending direction of the sliding groove.
3. The locking device of claim 2, further comprising: the extending direction of the sliding groove and the moving direction of the battery pack form an included angle, the sliding groove is located at the initial position at one end, close to the battery pack, of the sliding groove, and the end, far away from the battery pack, of the sliding groove is located at the locking position.
4. A locking device according to claim 2 or 3, characterized in that: a limiting area protruding towards the battery pack is arranged at the position of the sliding groove, and the lock pin can fall into the limiting area.
5. The locking device of claim 2, further comprising: the moving mechanism is provided with a guide groove, the guide groove extends from the surface of the moving mechanism to the initial position of the sliding groove, and the lock pin can move to the initial position of the sliding groove along the guide groove.
6. A locking device according to claim 2 or 5, characterized in that: the lock pin comprises a pin column and a pin flange protruding outwards along the circumferential direction of the pin column; the inner circumferential surface of the sliding groove forms a first inner circumferential surface extending along the circumferential direction and a second inner circumferential surface extending along the circumferential direction, the first inner circumferential surface is matched with the outer circumferential surface of the pin column, and the second inner circumferential surface is matched with the outer circumferential surface of the pin flange; when the lock pin slides in the sliding groove, the pin column moves in the groove formed in the first inner circumferential surface, and the pin flange moves in the groove formed in the second inner circumferential surface.
7. The locking device of claim 1, wherein the linkage mechanism comprises:
the end, facing the battery pack, of the first rack can be abutted against the battery pack in the moving process of the battery pack to be close to the locking device;
the first gear is meshed with the first rack;
the first gear drives the second gear to rotate;
and the second rack is meshed with the second gear, and the second rack is fixed with the moving mechanism.
8. The locking device of claim 7, further comprising: the extending direction of the first rack is parallel to the moving direction of the battery pack.
9. Locking device according to claim 7 or 8, characterized in that: the linkage mechanism further comprises a pivot, the first gear and the second gear are respectively fixed at two ends of the pivot, and the first gear and the second gear are coaxially arranged.
10. The locking device of claim 1, further comprising: the locking device also comprises a reset mechanism; the reset mechanism moves the moving mechanism to move the lock connecting part out of the locking position of the locking structure.
11. The locking device of claim 8, further comprising: the locking device further comprises a reset mechanism, the reset mechanism is connected with the first rack, and the reset mechanism is used for applying acting force to the first rack, and the acting force enables the first rack to move towards the direction of the battery pack.
12. An electrical connection device, comprising:
the locking end connector is used for being connected with a battery end connector, and the battery end connector is fixedly connected with the locking connecting part;
a locking device as claimed in any one of claims 1 to 11; when the locking end connector is connected with the battery end connector, the locking device is connected with the locking connecting part.
13. The electrical connection device of claim 12, wherein: the locking end connector is an electric connector, and the battery end connector is an electric connector; when the lock connecting part moves to the locking position, the lock end connector and the battery end connector are electrically connected.
14. The electrical connection device as claimed in claim 12, wherein: the number of the moving mechanisms is multiple, and the moving mechanisms are arranged around the locking end connector.
15. The electrical connection device as claimed in claim 12 or 14, wherein: the quantity of locking structure is a plurality of, and is a plurality of the locking structure encircles locking end connector sets up.
16. The electrical connection device as claimed in claim 12, wherein: the number of the moving mechanisms is even, and the even moving mechanisms are symmetrically arranged on two sides of the locking end connector.
17. An electric vehicle, characterized in that: the electric vehicle includes the electric connecting device according to any one of claims 12 to 16.
18. A battery end connection device, comprising:
the battery end connector is used for being connected with the locking end connector;
a lock attachment portion secured to the battery end connector, the lock attachment portion for mating with the locking device of any one of claims 1 to 11; when the battery end connector is connected with the locking end connector, the locking connecting part is connected with the locking device.
19. The battery end connection device of claim 18, wherein: the quantity of lock connecting portion is a plurality of, and is a plurality of lock connecting portion encircle the battery end connector sets up.
20. A battery pack assembly, comprising: the battery pack assembly comprising the battery end connection device of claim 18 or 19.
21. The battery pack assembly of claim 20, wherein: the battery pack assembly comprises a battery pack, and the battery end connecting device is located on the end face of the battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254766.8A CN113547906B (en) | 2020-04-02 | 2020-04-02 | Locking device, electric connection device, battery end connection device, electric automobile and battery pack assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254766.8A CN113547906B (en) | 2020-04-02 | 2020-04-02 | Locking device, electric connection device, battery end connection device, electric automobile and battery pack assembly |
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| CN113547906A true CN113547906A (en) | 2021-10-26 |
| CN113547906B CN113547906B (en) | 2024-06-18 |
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| Publication number | Publication date |
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| CN113547906B (en) | 2024-06-18 |
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