New energy power battery standard box body and manufacturing method thereof

Abstract

The invention discloses a new energy power battery standard box and a manufacturing method thereof.The new energy power battery standard box comprises a bottom plate, a front frame and a rear frame, the front frame and the rear frame are welded and assembled at the front end and the rear end of the bottom plate, and the bottom plate is provided with a main plate body, a left beam and a right beam, the front frame is provided with a front blocking plate and a front edge beam integrally formed on the upper side of the front blocking plate, the rear frame is provided with a rear blocking plate and a rear edge beam integrally formed on the upper side of the rear blocking plate, a through main channel is arranged in the main plate body, and the front blocking plate and the rear blocking plate are connected to the front end and the rear end of the main channel in a blocking mode respectively. A water inlet channel and a water outlet channel are arranged at the left end and the right end of the front blocking plate and are communicated with the main channel; the left edge beam and the right edge beam both protrude upwards relative to the main plate body, and a rectangular frame structure is defined by the front edge beam, the left edge beam, the rear edge beam and the right edge beam. The battery box has the beneficial effects that the box body assembly structure is simpler and more convenient, the sealing performance of the circulating water path in the bottom plate of the box body is good, and the safety performance of the battery box body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery boxes, and in particular to a new energy power battery standard box and a manufacturing method thereof. Background Art

[0002] As the world pays more attention to environmental protection and sustainable development, the new energy vehicle market continues to expand, and the new energy vehicle industry is experiencing unprecedented growth, which directly drives the demand for new energy power battery boxes. As the protective shell of the battery system, the battery box needs to have a high degree of safety performance, help the battery ventilate and dissipate heat, insulate and waterproof the battery, and protect the battery from collisions.

[0003] A water cooling system is installed in the bottom plate of the standard box of new energy power batteries. The traditional bottom plate structure is to weld two bottom plates together by stirring welding, and then weld the front and rear frames and module mounting beams to the bottom plate. Stirring welding deformation leads to poor flatness of the bottom plate. There is a risk of welding through the bottom plate during welding of other parts, thereby reducing the sealing of the internal circulating water circuit of the bottom plate, which is easy to cause water ingress and cause battery circuit short circuit, affecting the safety performance of the battery box. Summary of the invention

[0004] In view of this, the present invention provides a new energy power battery standard box, the purpose of which is to provide a simpler box assembly structure to ensure the sealing of the circulating water path inside the box bottom plate.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows:

[0006] It comprises a bottom plate and a front frame and a rear frame welded and assembled at the front and rear ends of the bottom plate, the bottom plate has a main plate body and a left beam and a right beam integrally formed at the left and right ends of the main plate body, the front frame has a front blocking plate and a front side beam integrally formed at the upper side of the front blocking plate, the rear frame has a rear blocking plate and a rear side beam integrally formed at the upper side of the rear blocking plate, a main channel running through the main plate body along its length direction is provided inside, the front blocking plate and the rear blocking plate are respectively blocked and connected at the front and rear ends of the main channel, a water inlet channel and a water outlet channel are provided at the left and right ends of the front blocking plate, and the water inlet channel and the water outlet channel are both connected to the main channel;

[0007] The left side beam and the right side beam both protrude upward relative to the main board body, and the front side beam, the left side beam, the rear side beam and the right side beam form a rectangular frame structure.

[0008] With the above structure, the battery box is easy to assemble, and the bottom plate is formed by one-piece extrusion, which can reduce the poor flatness of the bottom plate caused by welding deformation, reduce the risk of welding through the bottom plate during welding of other parts, ensure the sealing of the internal circulating water channel of the bottom plate, and improve the safety performance of the battery box.

[0009] Preferably, the main channel is provided with spacers, each of which forms a circulation channel in the main channel, one end of which is connected to the water inlet channel, and the other end of which is connected to the water outlet channel. The above structure is simple, the cooling water can cover the entire main board, and the cooling effect is good.

[0010] As a preferred embodiment, the connection between the front blocking plate and the rear blocking plate and the main body is provided with a blocking groove, and the blocking groove is used for sealing welding. The above structure is adopted to enhance the air tightness of welding.

[0011] Preferably, the left and right beams are provided with first inclined surfaces at the ends in the length direction, and the front and rear beams are provided with second inclined surfaces at the ends in the length direction, and the first inclined surfaces and the second inclined surfaces are welded in a butt-to-face relationship. The above structure is simple and easy to install.

[0012] As a preferred embodiment: the water inlet and the water outlet are rectangular hollow chambers, the rear end of the rectangular hollow chamber is provided with water holes, a supporting structure is provided between two adjacent water holes, and the front end of the rectangular hollow chamber is connected with a water nozzle, and the water nozzle is used to lead out and bring in cooling water. With the above structure, compared with the traditional single long rectangular water passing part, many supporting structures are formed between the hole-shaped structures, which ensures that the bottom plate has better supporting strength and more welding area in the connecting area, thereby ensuring the welding strength and air tightness of the area.

[0013] As a preferred embodiment, a protrusion extends from the rear end of the front blocking plate, the protrusion is inserted into the interior of the main plate body, and the water hole is arranged in the protrusion. The above structure is easy to install and has good air tightness.

[0014] As a preferred embodiment: the upper surface of the main body is welded with a front module beam and a rear module beam for installing the battery module. The above structure is convenient for installing the battery module and has a compact structure.

[0015] As a preferred embodiment, a plurality of mounting brackets are provided between the front module beam and the front side beam and between the rear module beam and the rear side beam on the upper surface of the main board body, the two ends of the plurality of mounting brackets are welded to the mounting plate, and a rivet nut is installed in the middle, and the mounting brackets are used to install electrical appliances. The above structure is adopted to facilitate the installation of electrical appliances.

[0016] As a preferred embodiment: a plurality of upper cover mounting holes are provided on the upper sides of the left beam, the right beam, the front side beam and the rear side beam, and self-tapping screw sleeves are installed in the upper cover mounting holes. With the above structure, the upper cover mounting method uses self-tapping screw sleeves instead of traditional rivet nuts, which can effectively avoid poor airtightness of the box body caused by failure of the rivet nuts.

[0017] The second object of the present invention is to provide a method for manufacturing a new energy power battery standard box, the method comprising the following steps:

[0018] S1: using an integrated extrusion molding process to manufacture the bottom plate, the front frame, the rear frame, the front module beam and the rear module beam;

[0019] S2: welding the front blocking plate of the front frame to the front end of the main channel of the main board body by stirring welding, and welding the rear blocking plate of the rear frame to the rear end of the main channel of the main board body;

[0020] S3: Weld the first inclined surfaces of the left beam and the right beam to the second inclined surfaces of the front beam and the rear beam;

[0021] S4: A plugging groove is opened at the connection between the front plugging plate and the rear plugging plate and the main body, the plugging groove is processed by CNC, the plugging groove is welded and sealed by argon arc welding, and then welded by stirring welding;

[0022] S5: The water nozzle is welded to the water inlet and the water outlet by argon arc welding, the front module beam, the rear module beam, the mounting bracket and the main board are welded together by argon arc welding, and the rivet nut is assembled on the mounting bracket;

[0023] S6: A plurality of upper cover mounting holes are provided on the upper sides of the left beam, the right beam, the front side beam and the rear side beam, and self-tapping screw sleeves are installed in the upper cover mounting holes.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The bottom plate is extruded in one piece to reduce the size difference caused by stirring welding deformation, avoid welding through the bottom plate during subsequent welding of other parts, ensure the sealing of the internal circulating water channel of the bottom plate, and improve the safety performance of the battery box.

[0026] 2. The water holes have a hole-like structure, and many supporting structures are formed between the water holes, which ensures that the base plate has better supporting strength and more welding area in the connection area, thereby ensuring the welding strength and air tightness of the area.

[0027] 3. The left beam and the right beam are integrally formed at the left and right ends of the main board, the front blocking plate and the rear blocking plate are blocked with the main board, and the front side beam and the rear frame are welded with the left beam and the right beam to form a box structure, which has a simple structure and is easy to assemble.

[0028] 4. The sealing groove position is first sealed by argon arc welding, and then welded by stirring welding to improve the air tightness of the circulating water channel inside the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the front frame 2;

[0031] Figure 3 It is a structural schematic diagram of the rear frame 3;

[0032] Figure 4 A schematic diagram showing the blocking groove 5;

[0033] Figure 5 A schematic diagram of the main channel c is shown here;

[0034] Figure 6 A schematic diagram showing the bottom plate 1;

[0035] Figure 7 A schematic diagram showing the water hole a1;

[0036] Figure 8 A schematic diagram showing the upper cover mounting hole 17;

[0037] Fig. 9 It is a schematic diagram showing the mounting bracket 6. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with embodiments and drawings.

[0039] Embodiment 1

[0040] like Figure 1 As shown, a new energy power battery standard box is composed of a bottom plate 1, a front frame 2 and a rear frame 3, which are integrally formed. The bottom plate 1 has a rectangular main plate 11 and a left beam 12 and a right beam 13 integrally formed at the left and right ends of the main plate 11 and protruding upwards, as shown in FIG. Figure 2 As shown, the front frame 2 has a front blocking plate 21 and a front side beam 22 integrally formed on the upper side of the front blocking plate 21. Figure 3 As shown, the rear frame 3 has a rear blocking plate 31 and a rear side beam 32 integrally formed on the upper side of the rear blocking plate 31, a main channel c is provided inside the main body 11 along its length direction, the front blocking plate 21 of the front frame 2 is sealed and connected to the front end of the main channel c by welding, and the rear blocking plate 31 of the rear frame 3 is sealed and connected to the rear end of the main channel c by welding, the front side beam 22, the left beam 12, the rear side beam 32 and the right beam 13 form a rectangular frame structure with a simple structure and easy installation. Compared with the traditional method of welding two bottom plates together on the left and right, the bottom plate 1 formed by integral extrusion has good flatness, the safety performance of the battery box is good, and the possibility of welding through the bottom plate 1 in the subsequent welding process is low.

[0041] like Figure 4 As shown, V-shaped sealing grooves 5 are provided at the connection between the front blocking plate 21 and the rear blocking plate 31 and the main body 11. The sealing grooves 5 are first welded by argon arc welding and then by stirring welding, which can make the welding airtightness better.

[0042] like Figure 5 As shown, there are spacers c1 distributed in the main channel c, wherein some of the spacers c1 are sealed and connected to the front blocking plate 21, and some of the spacers c1 are sealed and connected to the rear blocking plate 31, so that the main channel c forms a circulation channel. In this embodiment, the front blocking plate 21 is provided with a water inlet channel a and a water outlet channel b at both ends, one end of the circulation channel is connected to the water inlet channel a, and the other end is connected to the water outlet channel b. The cooling water is introduced from the water inlet channel a. Since the water inlet channel a and the water outlet channel b are located on the same side of the main board body 11, the cooling water flows through the entire main board body 11 in sequence through the circulation channel and then spreads throughout the main board body 11, and finally is drawn out from the water outlet channel b, so that the cooling effect is good and the performance of the battery can be better guaranteed.

[0043] like Figure 5 and Figure 7 As shown, the water inlet a and the water outlet b are rectangular hollow chambers, the rear end of the rectangular hollow chamber is provided with water holes a1, and the front end is connected with a circular nozzle 4 for drawing out and introducing cooling water. There is a support structure a2 between two adjacent water holes a1. Compared with the traditional single long rectangular water passing part, many support structures are formed between the hole-shaped structures, which ensures that the bottom plate 1 has better support strength and more welding area in the connecting area, thereby ensuring the welding strength and air tightness of the place. Figure 2 As shown, a protrusion 211 extends from the rear end of the front blocking plate 21, and the protrusion 211 is inserted into the main body 11. The water hole a1 is arranged in the protrusion 211, and the mechanical structure is used to enhance the air tightness inside the main channel c.

[0044] like Figure 6 As shown, a first slope A is provided at the end of the left beam 12 and the right beam 13 in the length direction, and an installation position is formed between the first slope A of the left beam 12 and the first slope A of the right beam 13. The front side beam 22 and the rear side beam 32 are respectively installed in the front and rear installation positions. A second slope B is provided at the end of the front side beam 22 and the rear side beam 32 in the length direction, and the first slope A and the second slope B are welded opposite to each other to realize the connection between the front side beam 22 and the rear side beam 32 and the left beam 12 and the right beam 13. The structure is compact and easy to install.

[0045] like Figure 1 and Fig. 9 As shown, the upper surface of the main board body 11 is welded with a front module beam 7 and a rear module beam 8, which are also integrally formed and used to install the battery module. The front module beam 7 and the rear module beam 8 are parallel to the front side beam 22 and the rear side beam 32, and the two ends are welded to the sides of the left beam 12 and the right beam 13 respectively. A mounting bracket 6 is also provided between the front module beam 7 and the front side beam 22 and between the rear module beam 8 and the rear side beam 32 on the upper surface of the main board body 11. The mounting bracket 6 is used to install electrical appliances. The two ends of the mounting bracket 6 are welded to the mounting plate 11, and the middle part is suspended and equipped with a rivet nut 61.

[0046] like Figure 1 and Figure 8 As shown, a plurality of upper cover mounting holes 17 are provided on the upper sides of the left beam 12, the right beam 13, the front side beam 22 and the rear side beam 32, and self-tapping screw sleeves 171 are installed in the upper cover mounting holes 17. The self-tapping screw sleeves 171 are used to replace the traditional rivet nuts, which can effectively avoid the poor airtightness of the box body caused by the failure of the rivet nuts.

[0047] Embodiment 2

[0048] A method for manufacturing a new energy power battery standard box, comprising the following steps:

[0049] S1: The bottom plate 1, the front frame 2, the rear frame 3, the front module beam 7 and the rear module beam 8 are manufactured by an integrated extrusion molding process;

[0050] S2: welding the front blocking plate 21 of the front frame 2 to the front end of the main channel c of the main board body 11 by stirring welding, and welding the rear blocking plate 31 of the rear frame 3 to the rear end of the main channel c of the main board body 11;

[0051] S3: Weld the first inclined surface A of the left side beam 12 and the right side beam 13 to the second inclined surface B of the front side beam 22 and the rear side beam 32;

[0052] S4: A blocking groove 5 is formed at the connection between the front blocking plate 21 and the rear blocking plate 31 and the main body 11. The blocking groove 5 is processed by CNC, and the blocking groove 5 is welded and blocked by argon arc welding, and then welded by stirring welding;

[0053] S5: The water nozzle 4 is welded to the water inlet a and the water outlet b by argon arc welding, the front module beam 7, the rear module beam 8, the mounting bracket 6 and the main board 11 are welded together by argon arc welding, and the rivet nut 61 is assembled on the mounting bracket 6;

[0054] S6: A plurality of upper cover mounting holes 17 are provided on the upper sides of the left beam 12 , the right beam 13 , the front side beam 22 and the rear side beam 32 , and self-tapping screw sleeves 171 are installed in the upper cover mounting holes 17 .

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A new energy power battery standard box, characterized by: The invention comprises a bottom plate (1) and a front frame (2) and a rear frame (3) welded and assembled at the front and rear ends of the bottom plate (1); the bottom plate (1) comprises a main plate body (11) and a left beam (12) and a right beam (13) integrally formed at the left and right ends of the main plate body (11); the front frame (2) comprises a front blocking plate (21) and a front side beam (22) integrally formed at the upper side of the front blocking plate (21); the rear frame (3) comprises a rear blocking plate (31) and a rear side beam (32) integrally formed at the upper side of the rear blocking plate (31); a main channel (c) is provided inside the main plate body (11) and passes through the main plate body along its length direction; the front blocking plate (21) and the rear blocking plate (31) respectively block the front and rear ends of the main channel (c); a water inlet channel (a) and a water outlet channel (b) are provided at the left and right ends of the front blocking plate (21); the water inlet channel (a) and the water outlet channel (b) are both connected to the main channel (c); The left beam (12) and the right beam (13) both protrude upward relative to the main body (11); the front beam (22), the left beam (12), the rear beam (32) and the right beam (13) form a rectangular frame structure.

2. The new energy power battery standard box according to claim 1 is characterized in that: The main channel (c) is provided with partition bars (c1), and each of the partition bars (c1) enables the main channel (c) to form a circulation channel, one end of the circulation channel is connected to the water inlet channel (a), and the other end is connected to the water outlet channel (b).

3. The new energy power battery standard box according to claim 1 is characterized in that: The connection points between the front blocking plate (21) and the rear blocking plate (31) and the main plate body (11) are both provided with sealing grooves (5), and the sealing grooves (5) are used for sealing welding.

4. The new energy power battery standard box according to claim 1 is characterized in that: The left side beam (12) and the right side beam (13) are provided with a first inclined surface (A) at the ends in the length direction, and the front side beam (22) and the rear side beam (32) are provided with a second inclined surface (B) at the ends in the length direction, and the first inclined surface (A) and the second inclined surface (B) are welded in opposite directions.

5. The new energy power battery standard box according to claim 2 is characterized in that: The water inlet (a) and the water outlet (b) are rectangular hollow chambers, a water hole (a1) is distributed at the rear end of the rectangular hollow chamber, a support structure (a2) is provided between two adjacent water holes (a1), and a water nozzle (4) is connected to the front end of the rectangular hollow chamber, and the water nozzle (4) is used to draw out and introduce cooling water.

6. The new energy power battery standard box according to claim 5 is characterized in that: A protrusion (211) extends from the rear end of the front blocking plate (21), the protrusion (211) is inserted into the interior of the main plate body (11), and the water passage hole (a1) is arranged in the protrusion (211).

7. The new energy power battery standard box according to claim 2 is characterized in that: The upper surface of the main board body (11) is welded with a front module beam (7) and a rear module beam (8) for mounting a battery module.

8. The new energy power battery standard box according to claim 7 is characterized in that: A plurality of mounting brackets (6) are provided between the front module beam (7) and the front side beam (22) and between the rear module beam (8) and the rear side beam (32) on the upper surface of the main board body (11); both ends of the plurality of mounting brackets (6) are welded to the mounting plate (11); a rivet nut (61) is installed in the middle; and the mounting brackets (6) are used for mounting electrical appliances.

9. The new energy power battery standard box according to claim 1, characterized in that: A plurality of upper cover mounting holes (17) are provided on the upper sides of the left beam (12), the right beam (13), the front side beam (22) and the rear side beam (32), and self-tapping screw sleeves (171) are installed in the upper cover mounting holes (17).

10. A method for manufacturing a new energy power battery standard box according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: using an integrated extrusion molding process to manufacture the bottom plate (1), the front frame (2), the rear frame (3), the front module beam (7) and the rear module beam (8); S2: welding the front blocking plate (21) of the front frame (2) to the front end of the main channel (c) of the main body (11) by stirring welding, and welding the rear blocking plate (31) of the rear frame (3) to the rear end of the main channel (c) of the main body (11); S3: welding the first inclined surfaces (A) of the left beam (12) and the right beam (13) to the second inclined surfaces (B) of the front side beam (22) and the rear side beam (32); S4: A sealing groove (5) is provided at the connection between the front blocking plate (21) and the rear blocking plate (31) and the main body (11), wherein the sealing groove (5) is processed by CNC, the sealing groove (5) is welded and sealed by argon arc welding, and then welded by stirring welding; S5: The water nozzle (4) is welded to the water inlet (a) and the water outlet (b) by argon arc welding, the front module beam (7), the rear module beam (8), the mounting bracket (6) and the main board (11) are welded together by argon arc welding, and the rivet nut (61) is assembled on the mounting bracket (6); S6: A plurality of upper cover mounting holes (17) are provided on the upper sides of the left beam (12), the right beam (13), the front side beam (22) and the rear side beam (32), and self-tapping screw sleeves (171) are installed in the upper cover mounting holes (17).

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