Self-limiting liquid cooling integrated box structure and vehicle

Abstract

The utility model relates to the technical field of vehicle-mounted power batteries, in particular to a self-limiting liquid cooling integrated box body structure and a vehicle, and the self-limiting liquid cooling integrated box body structure comprises a box body which is internally provided with a liquid cooling plate clamping groove; the liquid cooling plate is fixed in the liquid cooling plate clamping groove in a hot pressing mode, and the outline of the liquid cooling plate is matched with the inner side wall of the liquid cooling plate clamping groove. The outline of the liquid cooling plate and the inner side wall of the liquid cooling plate clamping groove are matched and then fixed in a hot pressing mode, the inner side wall of the liquid cooling plate clamping groove plays a role in limiting the liquid cooling plate, when the box body vibrates, the liquid cooling plate and the liquid cooling plate clamping groove are connected into a whole and vibrate synchronously, the liquid cooling plate is difficult to move relative to the inner wall of the liquid cooling plate clamping groove, and therefore the liquid cooling plate can be prevented from deforming and cracking during vibration.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted power batteries, in particular to a self-limiting liquid-cooling integrated box structure and a vehicle. Background Art

[0002] As the technology of electric new energy vehicles continues to change, the requirements for endurance and safety are increasing day by day. Due to the lightweight design requirements of the box, the liquid cooling integrated structure design composed of composite box can quickly reduce the power consumption of the whole vehicle and increase the endurance.

[0003] Traditional composite material boxes and liquid cooling plates are composited using a hot pressing process. After composite fusion, vibration fatigue at the hot pressing sealing position is prone to occur, causing cracks and leakage at the hot pressing joints. Therefore, an integrated liquid cooling solution is needed to solve this problem. Utility Model Content

[0004] One of the purposes of the utility model is to provide a self-limiting liquid cooling integrated box structure, aiming to solve the problem that when the box and the liquid cooling plate are both made of non-metallic materials, vibration and durable fatigue at the hot pressing sealing position may easily occur after composite fusion, causing cracks and leakage at the hot pressing joints.

[0005] The utility model provides a self-limiting liquid cooling integrated box structure, comprising: a box body, wherein a liquid cooling plate slot is arranged in the box body; a liquid cooling plate, which is hot-pressed and fixed in the liquid cooling plate slot, and the contour of the liquid cooling plate matches the inner side wall of the liquid cooling plate slot.

[0006] Optionally, the box body is further provided with a water inlet and outlet slot, and a water pipe quick-plug connector is fixed in the water outlet slot; the liquid cooling plate is provided with water inlet and outlet holes, and the water pipe quick-plug connector is connected to the water inlet and outlet holes.

[0007] Optionally, the liquid cooling plate is provided with a flange surrounding the water inlet and outlet holes, the water pipe quick connector is provided with a water inlet and outlet, and the flange is plugged into the water inlet and outlet.

[0008] Optionally, a first reinforcing rib is provided on the periphery of the box body; a second reinforcing rib and a reinforcing pattern are provided on the bottom surface of the box body, the second reinforcing rib is located at the edge of the bottom surface of the box body, and the reinforcing pattern is located on the inner side of the second reinforcing rib.

[0009] Optionally, the liquid cooling plate is an integral plate, and the liquid cooling plate and the bottom of the liquid cooling plate slot form a continuous flow channel.

[0010] Optionally, a concave bayonet is provided at the edge of the liquid cooling plate, and a clamping block protruding into the bayonet is provided in the box body, and a gap is provided between the clamping block and the bayonet.

[0011] Optionally, the positive projection of the card block on the bottom of the liquid cooling plate slot is triangular, and the side of the card block protruding into the bayonet is parallel to the corresponding inner wall of the bayonet; the side of the card block protruding into the bayonet is inclined relative to the edge of the liquid cooling plate where the bayonet is located.

[0012] Optionally, the liquid cooling plate includes a plurality of extruded aluminum plates, all of which have independent flow channels therein, and the flow channels of adjacent extruded aluminum plates are connected via water inlet joints.

[0013] Optionally, all the extruded aluminum plates are fixedly connected side by side, and each of the extruded aluminum plates is provided with a plurality of water inlet and outlet holes, some of the water inlet and outlet holes are connected with the water diversion joints, and the remaining water inlet and outlet holes are provided with hole plugs.

[0014] A second object of the present utility model is to provide a vehicle, comprising the above-mentioned self-limiting liquid-cooled integrated box structure.

[0015] The technical effects achieved by the utility model using the above technical solution are:

[0016] The contour of the liquid cooling plate is matched with the inner wall of the liquid cooling plate slot and fixed by hot pressing. The inner wall of the liquid cooling plate slot limits the liquid cooling plate. When the box vibrates, the liquid cooling plate and the liquid cooling plate slot are connected as a whole and vibrate synchronously. The liquid cooling plate is difficult to move relative to the inner wall of the liquid cooling plate slot, thereby preventing the liquid cooling plate from deforming and cracking during vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A top view of the self-limiting liquid cooling integrated box structure in Example 1;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure after hiding the battery cell;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure behind the hidden liquid cooling plate;

[0020] Figure 4 for Figure 1 Front view along the negative X direction;

[0021] Figure 5 A bottom view of the self-limiting liquid cooling integrated box structure in Example 1;

[0022] Figure 6 for Figure 5 Enlarged view of part A in the middle;

[0023] Figure 7 is a side view of the liquid cooling plate in Example 1;

[0024] Figure 8This is a schematic diagram of the structure of the water pipe quick-connect connector in Example 1;

[0025] Fig. 9 for Figure 1 Enlarged view of middle part B;

[0026] Fig.10 This is a top view of the self-limiting liquid-cooled integrated box structure in Example 2.

[0027] Reference numerals:

[0028] 1. Box body; 11. Liquid cooling plate slot; 12. Water inlet and outlet slots; 13. Block; 14. First reinforcing rib; 15. Second reinforcing rib; 16. Reinforcement pattern;

[0029] 2. Battery cells;

[0030] 3. Liquid cooling plate; 30. Extruded aluminum plate; 31. Water inlet and outlet holes; 32. Flange; 33. Bayonet; 34. Water diversion joint;

[0031] 4. Water pipe quick-connect connector; 41. Water inlet and outlet. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that, in this document, relational terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0034] Example 1

[0035] The present application embodiment provides a self-limiting liquid cooling integrated box structure, referring to Figures 1 to 3 , including a box body 1 and a liquid cooling plate 3 disposed in the box body 1, the internal space of the box body 1 is used to stack the battery cells 2. A liquid cooling plate slot 11 is preformed on the bottom plate in the box body 1, the contour of the liquid cooling plate 3 matches the inner side wall of the liquid cooling plate slot 11, the liquid cooling plate 3 is hot-pressed and fixed in the liquid cooling plate slot 11, and the battery cells 2 are stacked on the upper surface of the liquid cooling plate 3. A water inlet and outlet slot 12 is also preformed on the bottom plate in the box body 1, and a water pipe quick-connect connector 4 is clamped and fixed in the water inlet and outlet slot 12.

[0036] Reference Figure 2 and Figure 3The contour of the liquid cooling plate 3 is matched with the inner wall of the liquid cooling plate slot 11 and then fixed by hot pressing. The inner wall of the liquid cooling plate slot 11 limits the liquid cooling plate 3. When the box body 1 vibrates, the liquid cooling plate 3 and the liquid cooling plate slot 11 are connected as a whole and vibrate synchronously. The liquid cooling plate 3 is difficult to move relative to the inner wall of the liquid cooling plate slot 11, thereby preventing the liquid cooling plate 3 from deforming and cracking during vibration.

[0037] Reference Figures 4 to 6 The first reinforcing rib 14 is arranged around the box body 1, and the second reinforcing rib 15 and reinforcing pattern 16 are arranged on the bottom surface of the box body 1. The second reinforcing rib 15 is located at the edge of the bottom surface of the box body 1, and the reinforcing pattern 16 is located inside the second reinforcing rib 15. The second reinforcing rib 15 and the bottom reinforcing pattern 16 of the box body 1 can resist the impact of dragging the bottom; the first reinforcing rib 14 surrounds the entire box body 1 to enhance the rigidity of the whole package and resist the impact load.

[0038] Reference Figure 7 and Figure 8 The liquid cooling plate 3 is provided with an annular flange 32, and the inner circle of the flange 32 is provided with water inlet and outlet holes 31 which are communicated with the flow channel in the liquid cooling plate 3. Both ends of the water pipe quick plug connector 4 have water inlet and outlet ports 41, and the water inlet and outlet port 41 at one end is used for quick plug connection with the flange 32 on the liquid cooling plate 3, and the water inlet and outlet port 41 at the other end is used for crimping and fixing with the corresponding lead-out hole position on the box body 1.

[0039] Reference Figure 2 and Fig. 9 The liquid cooling plate 3 of this embodiment is a stamped integral plate with a winding groove stamped thereon. When the integral plate is hot-pressed and fixed to the bottom of the liquid cooling plate slot 11, the inner wall of the groove and the bottom of the liquid cooling plate slot 11 form a continuous flow channel. The main part of the liquid cooling plate 3 is projected in a rectangular shape on the bottom of the liquid cooling plate slot 11, allowing part of the structure of the liquid cooling plate 3 to protrude from the main part. Concave bayonet 33 is provided on the long sides extending along the X direction on both sides of the liquid cooling plate 3, and the bayonet 33 cooperates with the reserved block 13 on the inner wall of the box body 1.

[0040] Reference Fig. 9 The orthographic projection of the block 13 at the bottom of the liquid cooling plate slot 11 is an isosceles triangle, and the two sides of the block 13 protruding into the bayonet 33 are the two waists of the isosceles triangle, and the two waists form the vertex angle of the isosceles triangle, and the angle bisector of the vertex angle is perpendicular to the edge of the liquid cooling plate 3. Therefore, the side of the block 13 protruding into the bayonet 33 is inclined relative to the edge of the liquid cooling plate 3 where the bayonet 33 is located. The two sides of the block 13 protruding into the bayonet 33 are parallel to the corresponding inner wall of the bayonet 33, and there is a gap.

[0041] Reference Fig. 9 and Figure 2After the block 13 is matched with the bayonet 33 and the edge of the liquid cooling plate 3 is matched with the liquid cooling plate slot 11, the liquid cooling plate 3 can be hot-pressed and fixed in the liquid cooling plate slot 11. The block 13 in the box 1 and the bayonet 33 of the liquid cooling plate 3 are limited and fixed to prevent the liquid cooling plate 3 from jumping and shifting, while reducing the local stress acting on the long side of the liquid cooling plate 3, and preventing the risk of late vibration leakage and side deformation and warping.

[0042] The installation sequence of the above liquid cooling plate 3 is:

[0043] 1. Use a stamped integral plate as the liquid cooling plate 3, and install a water pipe quick-connect connector 4 on the water inlet and outlet holes 31 of the liquid cooling plate 3;

[0044] 2. Make the clamping opening 33 of the liquid cooling plate 3 cooperate with the clamping block 13 of the box body 1, and make the edge of the liquid cooling plate 3 cooperate with the inner wall of the liquid cooling plate clamping groove 11, hot-press and fix the liquid cooling plate 3 in the liquid cooling plate clamping groove 11, and crimp and fix the water pipe quick-connect connector 4 with the corresponding hole position of the box body 1.

[0045] Example 2

[0046] The embodiment of the present application provides a self-limiting liquid cooling integrated box structure based on the embodiment 1, which is different from the embodiment 1 in that: Fig.10 The liquid cooling plate 3 is made of multiple extruded aluminum plates 30 arranged and fixed together by a stir friction welding process. Each extruded aluminum plate 30 has an independent flow channel inside. The positive projection of each extruded aluminum plate 30 on the bottom of the liquid cooling plate slot 11 is rectangular. Each extruded aluminum plate 30 is provided with a water inlet and outlet hole 31 at the four corners. Some of the water inlet and outlet holes 31 are connected with water diversion joints 34, and the remaining water inlet and outlet holes 31 are plugged with hole plugs. The flow channels of adjacent extruded aluminum plates 30 are connected through the water diversion joints 34.

[0047] The installation sequence of the above liquid cooling plate 3 is:

[0048] 1. Weld and fix multiple extruded aluminum plates 30 side by side to form a liquid cooling plate 3, connect the water inlet and outlet holes 31 of adjacent extruded aluminum plates 30 with water diversion joints 34, and plug the remaining water inlet and outlet holes 31 of the extruded aluminum plates 30 with hole plugs;

[0049] 2. Install the water pipe quick-connect connector 4 on the water inlet and outlet holes 31 of the liquid cooling plate 3;

[0050] 3. The liquid cooling plate 3 is fixed in the liquid cooling plate slot 11 by hot pressing, and the water pipe quick-connect connector 4 is pressed and fixed to the corresponding hole of the box body 1.

[0051] The flow channel of the extruded aluminum plate 30 is extruded by extrusion molding and is directly used as a liquid cooling flow channel; at the same time, the preset redundant water inlet and outlet holes 31 can be directly sealed and fixed with hole plugs; the multiple extruded aluminum plates 30 that make up the liquid cooling plate 3 are transferred through the water diversion joint 34; the stirring friction welding process is used between adjacent extruded aluminum single pieces to ensure the bottom strength of the whole package and avoid the risk of cracking.

[0052] The embodiment of the utility model further provides a vehicle, which includes the above-mentioned self-limiting liquid-cooled integrated box structure. The structural form has been described in detail in the present embodiment and will not be repeated here.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-limiting liquid cooling integrated box structure, characterized in that: include: A box body (1), wherein a liquid cooling plate slot (11) is provided in the box body (1); The liquid cooling plate (3) is fixed in the liquid cooling plate slot (11) by hot pressing, and the contour of the liquid cooling plate (3) matches the inner side wall of the liquid cooling plate slot (11).

2. The self-limiting liquid cooling integrated box structure according to claim 1, characterized in that: The box body (1) is also provided with a water inlet and outlet slot (12), and a water pipe quick-plug connector (4) is fixedly connected in the water outlet slot (12); the liquid cooling plate (3) is provided with water inlet and outlet holes (31), and the water pipe quick-plug connector (4) is connected to the water inlet and outlet holes (31).

3. The self-limiting liquid cooling integrated box structure according to claim 2, characterized in that: The liquid cooling plate (3) is provided with a flange (32) surrounding the water inlet and outlet holes (31), the water pipe quick connector (4) is provided with a water inlet and outlet (41), and the flange (32) is plugged into the water inlet and outlet (41).

4. The self-limiting liquid cooling integrated box structure according to claim 1, characterized in that: The box body (1) is provided with a first reinforcing rib (14) on the circumference thereof; the box body (1) is provided with a second reinforcing rib (15) and a reinforcing pattern (16) on the bottom surface thereof, wherein the second reinforcing rib (15) is located at the edge of the bottom surface of the box body (1), and the reinforcing pattern (16) is located on the inner side of the second reinforcing rib (15).

5. The self-limiting liquid cooling integrated box structure according to any one of claims 1 to 4, characterized in that: The liquid cooling plate (3) is an integral plate, and the liquid cooling plate (3) and the bottom of the liquid cooling plate slot (11) form a continuous flow channel.

6. The self-limiting liquid cooling integrated box structure according to claim 5, characterized in that: The edge of the liquid cooling plate (3) is provided with an inwardly concave bayonet (33), and the box body (1) is provided with a clamping block (13) protruding into the bayonet (33), with a gap between the clamping block (13) and the bayonet (33).

7. The self-limiting liquid cooling integrated box structure according to claim 6, characterized in that: The positive projection of the card block (13) at the bottom of the liquid cooling plate card slot (11) is in the shape of a triangle, and the side edge of the card block (13) protruding into the card slot (33) is parallel to the corresponding inner wall of the card slot (33); the side edge of the card block (13) protruding into the card slot (33) is inclined relative to the edge of the liquid cooling plate (3) where the card slot (33) is located.

8. The self-limiting liquid cooling integrated box structure according to any one of claims 1 to 4, characterized in that: The liquid cooling plate (3) comprises a plurality of extruded aluminum plates (30), each of which has an independent flow channel inside, and the flow channels of adjacent extruded aluminum plates (30) are connected via a water diversion joint (34).

9. The self-limiting liquid cooling integrated box structure according to claim 8, characterized in that: All the extruded aluminum plates (30) are fixedly connected side by side, and each of the extruded aluminum plates (30) is provided with a plurality of water inlet and outlet holes (31), some of the water inlet and outlet holes (31) are connected with the water diversion joints (34), and the remaining water inlet and outlet holes (31) are provided with hole plugs.

10. A vehicle, characterized in that: It comprises the self-limiting liquid-cooled integrated box structure as described in any one of claims 1-9.

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