Battery box for electric vehicle

Abstract

The utility model provides a battery box for an electric vehicle, which comprises a box body with a top opening, a connecting bottom plate arranged at the bottom of an inner cavity of the box body, a plurality of connecting sockets arranged on the connecting bottom plate, a plurality of batteries arranged in the box body, connecting plugs arranged at the bottoms of the batteries and corresponding to the connecting sockets, and the connecting plugs are inserted into the connecting sockets. The top of the box body is provided with a wire outlet, the end of the wire extends out of the wire outlet and is connected with a motor of the electric vehicle, the top of the box body is further provided with a pressing rod, the bottom of the pressing rod is provided with a pressing block in a clamped mode, the bottom of the pressing block makes contact with the top of the battery, and the pressing block is made of elastic materials. According to the battery box for the electric vehicle, the connection of the battery and the connection socket is integrated in the box body, so that the connection plug can be conveniently aligned with the connection socket, the tight connection is ensured, and the normal operation of the electric vehicle is ensured; the pressing block prevents the battery from moving up and down, connection disconnection is prevented, and the elastic pressing block prevents the battery from being damaged due to extrusion on the battery when the pressing rod is pressed downwards.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle technology and relates to a battery box for electric vehicles. Background Technology

[0002] In traditional electric vehicles, the battery is directly mounted and fixed in the battery compartment. During the electric vehicle's operation, frequent braking, coupled with the fixed connection between the battery and the compartment, results in significant impact forces on the battery, easily leading to battery damage. It can also cause the connection between the battery and the motor to break, preventing the motor from starting. Currently, battery holders have appeared on the market, such as the electric vehicle and battery holder for installing batteries described in Chinese patent number "201621333286.6". This patent includes an upward-opening bucket body with at least one mounting position for independently installing a single battery. Each mounting position has a limiting rib integrally connected to the inner wall of the bucket and abutting against the outer wall of the battery to prevent battery displacement. The limiting rib extends vertically from the opening of the bucket body to the bottom. The bottom of the bucket body has a fixing part for connecting to the electric vehicle, including multiple screw holes. In the above structure, the battery can only limit the battery on the side. During the operation of the electric vehicle, the battery is prone to moving up and down inside the battery can, which may cause the connection between the battery and the connector to break. At the same time, the top of the battery is easily damaged by impact. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a battery box for electric vehicles that prevents the battery from moving up and down.

[0004] The objective of this utility model can be achieved through the following technical solution: A battery box for electric vehicles includes a box body with an open top, a connecting base plate at the bottom of the inner cavity of the box body, a plurality of connecting sockets on the connecting base plate, a plurality of batteries inside the box body, a connecting plug at the bottom of each battery corresponding to the connecting socket, the connecting plug being inserted into the connecting socket, a wire being connected to the connecting socket, a wire outlet at the top of the box body, the end of the wire extending from the wire outlet and connecting to the electric vehicle motor, a pressure rod at the top of the box body, a pressure block being snapped onto the bottom of the pressure rod, the bottom of the pressure block contacting the top of the battery, and the pressure block being made of an elastic material.

[0005] In the aforementioned battery box for electric vehicles, a first mounting base and a second mounting base are respectively installed on both sides of the top of the box body. One end of the pressure rod is hinged to the top of the first mounting base, and a locking mechanism is provided between the other end of the pressure rod and the second mounting base.

[0006] In the aforementioned battery box for an electric vehicle, the locking mechanism includes a button, a locking block, a spring, and a locking groove located on the second mounting base. The bottom of the button has a first guide slope, and the pressure rod has a button hole. The button is located in the button hole and can move up and down within the button hole. The locking block is slidably disposed at the bottom of the pressure rod. The locking block has a guide groove, and the groove wall of the guide groove is a second guide slope. The first guide slope and the second guide slope are in contact. The side of the locking block also has a locking guide slope. The side of the locking block has a spring post, and the spring is sleeved on the spring post. The bottom of the pressure rod has a spring contact surface, and the two ends of the spring abut against the locking block and the spring contact surface, respectively. When the end of the locking block enters the locking groove, the pressure rod is in a locked state.

[0007] In the aforementioned battery box for electric vehicles, a limiting flange is formed in the middle of the side of the button. The top of the button is inserted from the bottom of the button hole, and the limiting flange is located below the button hole. When the limiting flange contacts the bottom surface of the pressure rod, the button stops moving upward.

[0008] In the above-mentioned battery box for electric vehicles, the top of the pressure block is provided with several protrusions, the sides of the protrusions are recessed to form a snap-in portion, the bottom of the pressure rod is provided with several mounting plates, the mounting plates are provided with mounting grooves, the sides of the groove openings of the mounting grooves are recessed, and the snap-in portion snaps into the mounting groove.

[0009] In the aforementioned battery box for electric vehicles, the connecting base plate is provided with several buffer pads, the bottom of the battery is in contact with the buffer pads, and the connecting base plate is also provided with several grooves.

[0010] In the aforementioned battery box for electric vehicles, a plurality of limiting pads are provided on the inner wall of the box. The limiting pads are made of elastic material. An insertion hole is formed on the side of the box. The end of the limiting pad protrudes downward to form an insertion part. The cross-section of the insertion part is an inverted trapezoid with a larger top and a smaller bottom. The insertion part is inserted into the insertion hole. The side of the limiting pad protrudes to form a limiting ridge. During the process of the battery being installed into the box, it contacts and squeezes the limiting ridge.

[0011] In the aforementioned battery box for electric vehicles, the side wall of the box protrudes outward, forming a wire passage groove inside the box. The wire outlet is located at the top of the groove wall. A baffle is provided inside the wire passage groove. The end of the wire extends into the wire passage groove from below the baffle and extends out from the wire outlet.

[0012] In the aforementioned battery box for electric vehicles, the bottom of the connector plug is provided with several hollow first guide posts, the inner opening of the first guide posts being flared, and the connector socket is provided with several second guide posts, the second guide posts being inserted into the first guide posts.

[0013] In the aforementioned battery box for an electric vehicle, the connecting socket has several mounting holes, and a screw passes through the mounting holes. The threaded section of the screw passes through the mounting holes and is threadedly fixed to the connecting base plate. There is a gap a between the side wall of the screw and the wall of the mounting hole, and there is a gap b between the bottom of the screw head and the connecting base plate. The width of both gap a and gap b is 1 mm.

[0014] Compared to existing technologies, this electric vehicle battery box integrates both the battery and connector connections within the box, facilitating easy alignment of the connector plug with the connector socket while ensuring a tight connection for the normal operation of the electric vehicle. A pressure block prevents the battery from shifting vertically and disconnects the connection; the elastic pressure block prevents the battery from being squeezed and damaged when the pressure lever is pressed down. Pressing the button releases the locking block from the locking slot, unlocking the pressure lever, which can then be rotated upwards for easy battery removal and replacement. A limiting pad prevents the battery from wobbling within the box, ensuring battery stability. A buffer pad cushions the battery installation and prevents direct contact between the battery and the connecting base plate; the buffer pad and groove work together to prevent impurities on the connecting base plate from damaging the battery. Damage; the cable tray provides space for the wires to run, and the baffle ensures that the wires in the cable tray are not affected by external interference; the cable outlet is located at the top of the box, that is, the part of the box below the cable outlet is sealed, ensuring the waterproof effect of the box; the structure is simple and can be adapted to various vehicle models, reducing mold development; the second guide post is inserted into the first guide post to position and guide the connection process between the connector plug and the connector socket, protect the pin, and prevent the connector plug from being squeezed and causing the pin to break after being inserted crookedly; gaps a and gap b allow the connector socket to have an automatic adjustment range of 1mm in both the horizontal and vertical directions on the connecting base plate, so that the connector socket can be finely adjusted to its installation position, and the connector socket and connector plug can work precisely together. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the battery box for this electric vehicle.

[0016] Figure 2 This is a three-dimensional structural diagram of the internal structure of the battery box for this electric vehicle.

[0017] Figure 3 This is a three-dimensional structural diagram of the limiting pad in the battery box of this electric vehicle.

[0018] Figure 4This is a three-dimensional structural diagram of the locking mechanism in the battery box of this electric vehicle.

[0019] Figure 5 This is a cross-sectional schematic diagram of the locking mechanism in the battery box of this electric vehicle.

[0020] Figure 6 This is a three-dimensional structural diagram of the pressure rod in the battery box of this electric vehicle.

[0021] Figure 7 This is an exploded cross-sectional view of the connector plug and the connecting base plate in the battery box of this electric vehicle.

[0022] In the diagram, 1. Housing; 11. Cable outlet; 12. Cable channel; 13. Baffle; 2. Connecting base plate; 21. Connecting socket; 22. Buffer pad; 23. Groove; 24. Second guide post; 25. Mounting hole; 26. Screw; 3. Battery; 31. Connecting plug; 32. First guide post; 4. Pressure rod; 41. Button hole; 42. Spring contact surface; 43. Mounting plate; 44. Mounting groove; 5. First mounting base; 6. Second mounting base; 7. Locking mechanism; 71. Button; 72. Locking block; 73. Spring; 74. Locking groove; 75. First guide slope; 76. Guide groove; 77. Second guide slope; 78. Locking guide slope; 79. Spring post; 710. Limiting flange; 8. Pressure block; 81. Protrusion; 82. Snap-in part; 9. Limiting pad; 91. Insertion part; 92. Limiting protrusion. Detailed Implementation

[0023] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0024] like Figure 1-7 As shown, this electric vehicle battery box includes a box body 1 with an open top. A connecting base plate 2 is located at the bottom of the inner cavity of the box body 1, and several connecting sockets 21 are provided on the connecting base plate 2. Several batteries 3 are housed inside the box body 1, and the bottom of each battery 3 has a connecting plug 31 corresponding to the connecting socket 21. The connecting plug 31 is inserted into the connecting socket 21, and a wire is connected to the connecting socket 21. A wire outlet 11 is provided at the top of the box body 1, and the end of the wire extends from the wire outlet 11 and connects to the electric vehicle motor to enable motor operation. A pressure rod 4 is also provided at the top of the box body 1, and a pressure block 8 is snapped onto the bottom of the pressure rod 4. The bottom of the pressure block 8 contacts the top of the battery 3 to prevent the battery 3 from moving up and down. The pressure block 8 is made of an elastic material, such as rubber, and the elastic pressure block 8 prevents the pressure rod 4 from squeezing the battery 3 and damaging it when it presses down.

[0025] In the above technical solution: a first mounting seat 5 and a second mounting seat 6 are respectively installed on both sides of the top of the box 1. One end of the pressure rod 4 is hinged to the top of the first mounting seat 5, and a locking mechanism 7 is provided between the other end of the pressure rod 4 and the second mounting seat 6.

[0026] In the above technical solution: the locking mechanism 7 includes a button 71, a locking block 72, a spring 73, and a locking groove 74 located on the second mounting base 6. The button 71 has a first guide slope 75 at its bottom, and a button hole 41 on the pressure rod 4. The button 71 is located within the button hole 41 and can move up and down within it. The locking block 72 is slidably disposed at the bottom of the pressure rod 4. The locking block 72 has a guide groove 76, the wall of which is a second guide slope 77. The first guide slope 75 and the second guide slope 77 are in contact. A locking guide slope 78 is also formed on the side of the locking block 72. A spring post 79 is provided on the side of the locking block 72, and the spring 73 is sleeved on the spring post 79. A spring contact surface 42 is provided at the bottom of the pressure rod 4, and the two ends of the spring 73 abut against the locking block 72 and the spring contact surface 42, respectively.

[0027] When the end of the locking block 72 enters the locking groove 74, the lever 4 is in a locked state. At this time, the lever 4 cannot be opened relative to the second mounting base 5, and the lever 4 serves to position the battery 3. When it is necessary to unlock the lever 4, press down the button 71. The cooperation of the first guide slope 75 and the second guide slope 77 causes the locking block 72 to move away from the locking groove 74, and the spring 73 is compressed until the locking block 72 is completely disengaged from the locking groove 74, thus unlocking the lever 4. At this time, the lever 4 can be rotated upwards for easy removal and replacement of the battery 3.

[0028] In the above technical solution: a limiting flange 710 is made in the middle of the side of the button 71, the top of the button 71 is inserted from the bottom of the button hole 41, the limiting flange 710 is located below the button hole 41, and the button 71 stops moving upward when the limiting flange 710 contacts the bottom surface of the pressure rod 4.

[0029] In the above technical solution: the top of the pressure block 8 is provided with several protrusions 81, and the sides of the protrusions 81 are recessed to form a locking part 82. The bottom of the pressure rod 4 is provided with several mounting plates 43, and the mounting plates 43 are provided with mounting grooves 44, the sides of the groove opening of the mounting groove 44 being recessed. The locking part 82 is locked into the mounting groove 44, so that the pressure block 8 can be detachably installed at the bottom of the pressure rod 4.

[0030] In the above technical solution: the connecting base plate 2 is provided with several buffer pads 22, and the bottom of the battery 3 contacts the buffer pads 22. The connecting base plate 2 is also provided with several grooves 23, which are used to accommodate impurities such as stones and sand brought into the box 1 when placing the battery 3. The buffer pads 22 cushion the installation of the battery 3 and prevent the battery 3 from directly contacting the connecting base plate 2. If there are impurities such as stones and sand on the connecting base plate 2, the impurities will cause wear to the battery 3 when the bottom of the battery 3 directly contacts the connecting base plate 2. The buffer pads 22 and the grooves 23 work together to prevent impurities on the connecting base plate 2 from damaging the battery 3.

[0031] In the above technical solution: several limiting pads 9 are provided on the inner wall of the housing 1. The limiting pads 9 are made of an elastic material, such as rubber. An insertion hole is formed on the side of the housing 1. The end of the limiting pad 9 protrudes downward to form an insertion part 91. The cross-section of the insertion part 91 is an inverted trapezoid with a larger top and a smaller bottom. The insertion part 91 is inserted into the insertion hole, so that the limiting pad 9 is installed on the housing 1. The side of the limiting pad 9 protrudes to form a limiting ridge 92. During the process of inserting the battery 3 into the housing 1, the battery 3 contacts and squeezes the limiting ridge 92. The limiting ridge 92 not only buffers the insertion process of the battery 3 to prevent the battery 3 from colliding with the inner wall of the housing 1, but also limits the battery 3 inside the housing 1 to prevent the battery 3 from shaking inside the housing 1.

[0032] In the above technical solution: the side wall of the enclosure 1 protrudes outward, forming a cable channel 12 inside the enclosure 1. The cable outlet 11 is located at the top of the channel wall of the cable channel 12. A baffle 13 is provided inside the cable channel 12. The end of the wire extends into the cable channel 12 from below the baffle 13 and extends out from the cable outlet 11. The cable channel 12 provides space for the wire to run, and the baffle 13 ensures that the wire inside the cable channel 12 is not interfered with by the outside. The cable outlet 11 is located at the top of the enclosure 1, meaning that the part of the enclosure 1 below the cable outlet 11 is sealed, ensuring the waterproof effect of the enclosure 1.

[0033] In the above technical solutions: such as Figure 7 As shown, the bottom of the connector 31 is provided with several hollow first guide posts 32, and the inner opening of the first guide post 32 is flared. The connector socket 21 is provided with several second guide posts 24, which are inserted into the first guide posts 32 to position and guide the connection process between the connector 31 and the connector socket 21, protect the pins, and prevent the connector 31 from being inserted crookedly and squeezing the pins, which could cause the pins to break.

[0034] In the above technical solution: the connector 21 has several mounting holes 25, and screws 26 are inserted into the mounting holes 25. The threaded section of the screw 26 passes through the mounting hole 25 and is threadedly fixed to the connecting base plate 2. There is a gap a between the side wall of the screw 26 and the wall of the mounting hole 25, and there is a gap b between the bottom of the screw head and the connecting base plate 2. The width of both gap a and gap b is 1mm. Gap a and gap b allow the connector 21 to have an automatic adjustment range of 1mm in both the horizontal and vertical directions on the connecting base plate 2, enabling the connector 21 to fine-tune its installation position and allowing the connector 21 and connector 31 to work precisely together.

[0035] This electric vehicle battery box integrates the connection of battery 3 and connector socket 21 within the box body 1, facilitating the alignment of connector plug 31 with connector socket 21 while ensuring a tight connection and the normal operation of the electric vehicle. The pressure block 8 prevents battery 3 from shifting vertically and disconnecting the connection; the elastic pressure block 8 also prevents pressure on battery 3 from causing damage when pressure rod 4 is pressed down. Pressing button 71 disengages locking block 72 from locking groove 74, unlocking pressure rod 4. Pressure rod 4 can then be rotated upwards for easy removal and replacement of battery 3. The limiting pad 9 prevents battery 3 from shaking within the box body 1, ensuring battery stability. The buffer pad 22 cushions the installation of battery 3 and prevents direct contact between battery 3 and connecting base plate 2. The buffer pad 22 and groove 23 work together to prevent impurities on connecting base plate 2 from damaging battery 3. The cable tray 12 provides space for the wires to run, and the baffle 13 ensures that the wires in the cable tray 12 are not affected by external interference; the outlet 11 is located at the top of the housing 1, that is, the part of the housing 1 below the outlet 11 is sealed, ensuring the waterproof effect of the housing 1; the structure is simple and can be adapted to various car models, reducing mold development; the second guide post 24 is inserted into the first guide post 32 to position and guide the connection process between the connector plug 31 and the connector socket 21, protect the pin, and prevent the connector plug 31 from being inserted crookedly and squeezing the pin, causing the pin to break; the gaps a and b allow the connector socket 21 to have an automatic adjustment range of 1mm in both the horizontal and vertical directions on the connecting base plate 2, so that the connector socket 21 can be finely adjusted in its installation position, and the connector socket 21 and the connector plug 31 can work together precisely.

[0036] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0037] Although this document frequently uses terms such as housing 1; cable outlet 11; cable groove 12; baffle 13; connecting base plate 2; connecting socket 21; buffer pad 22; groove 23; second guide post 24; mounting hole 25; screw 26; battery 3; connecting plug 31; first guide post 32; pressure rod 4; button hole 41; spring contact surface 42; mounting plate 43; mounting groove 44; first mounting base 5; second mounting base 6; locking mechanism 7; button 71; locking block 72; spring 73; locking groove 74; first guide slope 75; guide groove 76; second guide slope 77; locking guide slope 78; spring post 79; limiting flange 710; pressure block 8; protrusion 81; snap-in part 82; limiting pad 9; insertion part 91; limiting protrusion 92, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0038] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A battery case for an electric vehicle, characterized by The utility model provides a box (1) including top opening, the bottom of the box (1) inner chamber is equipped with connecting bottom plate (2), a plurality of connecting sockets (21) are equipped on the connecting bottom plate (2), a plurality of batteries (3) are equipped in the box (1), the bottom of the battery (3) is equipped with the connecting plug (31) corresponding with the connecting socket (21), the connecting plug (31) is inserted into the connecting socket (21), the connecting socket (21) is connected with electric wire, the top of the box (1) is made into wire outlet (11), the electric wire end part is stretched out from the wire outlet (11) and is connected with electric motor car motor, the top of the box (1) is also equipped with pressure lever (4), the bottom of pressure lever (4) is clamped and is installed with pressure block (8), the bottom of pressure block (8) is in contact with the top of battery (3), and the pressure block (8) is made of elastic material.

2. The battery case for an electric vehicle according to claim 1, wherein First mounting seat (5) and second mounting seat (6) are installed on the both sides of the top of the box (1) respectively, one end of the pressure lever (4) is hinged on the top of the first mounting seat (5), and the other end of the pressure lever (4) is equipped with a locking mechanism (7) with the second mounting seat (6).

3. The battery case for an electric vehicle according to claim 2, wherein The locking mechanism (7) includes a button (71), a locking block (72), a spring (73) and a locking groove (74) on the second mounting seat (6), the bottom of the button (71) is provided with a first guide slope (75), the pressure lever (4) is provided with a button hole (41), the button (71) is located in the button hole (41) and can move up and down in the button hole (41), the locking block (72) is slidably arranged on the bottom of the pressure lever (4), the locking block (72) is provided with a guide groove (76), the groove wall of the guide groove (76) is a second guide slope (77), the first guide slope (75) and the second guide slope (77) are in contact, the side surface of the locking block (72) is further provided with a locking guide slope (78), the side surface of the locking block (72) is provided with a spring column (79), the spring (73) is sleeved on the spring column (79), the bottom of the pressure lever (4) is provided with a spring contact surface (42), and the two ends of the spring (73) are respectively in contact with the locking block (72) and the spring contact surface (42); when the end of the locking block (72) enters the locking groove (74), the pressure lever (4) is in a locked state.

4. The battery case for an electric vehicle according to claim 3, wherein The middle part of the side surface of the button (71) is provided with a limiting flange (710), the top of the button (71) is inserted from the bottom of the button hole (41), and the limiting flange (710) is located below the button hole (41); when the limiting flange (710) is in contact with the bottom surface of the pressure lever (4), the button (71) stops moving upward.

5. The battery case for an electric vehicle according to claim 1, wherein The top of the briquet (8) is provided with several protrusions (81), the side of the protrusion (81) is concave to form a clamping part (82), the bottom of the pressing rod (4) is provided with several mounting plates (43), the mounting plate (43) is provided with a mounting groove (44), the groove of the mounting groove (44) is concave on both sides, and the clamping part (82) is clamped into the mounting groove (44).

6. The battery case for an electric vehicle according to claim 1, wherein The connecting bottom plate (2) is provided with several buffer pads (22), the bottom of the battery (3) is in contact with the buffer pad (22), and the connecting bottom plate (2) is also provided with several grooves (23).

7. The battery case for an electric vehicle according to claim 1, wherein The inner wall of the box (1) is provided with several limiting pads (9), the limiting pad (9) is made of elastic material, the side of the box (1) is provided with an insertion hole, the end of the limiting pad (9) protrudes downward to form an insertion part (91), the cross section of the insertion part (91) is an inverted trapezoidal shape, the insertion part (91) is inserted into the insertion hole, the side of the limiting pad (9) protrudes to form a limiting protrusion (92), and the battery (3) contacts and extrudes the limiting protrusion (92) during being loaded into the box (1).

8. The battery case for an electric vehicle according to claim 1, wherein The side wall of the box (1) protrudes outward, so that a wire passing groove (12) is formed in the box (1), the wire outlet (11) is located at the top of the groove wall of the wire passing groove (12), the wire passing groove (12) is provided with a baffle (13), the end of the wire is inserted into the wire passing groove (12) from below the baffle (13) and extends out of the wire outlet (11).

9. The battery case for an electric vehicle according to claim 1, wherein The bottom of the connecting plug (31) is provided with several hollow first guide columns (32), the inner cavity opening of the first guide column (32) is in a horn type, the connecting socket (21) is provided with several second guide columns (24), and the second guide column (24) is inserted into the first guide column (32).

10. The battery case for an electric vehicle according to claim 1, wherein The connecting socket (21) is provided with several mounting holes (25), the mounting hole (25) is provided with a screw (26), the threaded section of the screw (26) passes through the mounting hole (25) and is threadedly fixed on the connecting bottom plate (2), the gap a exists between the side wall of the screw (26) and the hole wall of the mounting hole (25), the gap b exists between the bottom of the cap head of the screw (26) and the connecting bottom plate (2), and the width of the gap a and the gap b is 1mm.

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