Cooling plate for automobile battery box body

Abstract

The utility model discloses a cooling plate for an automobile battery box body, which comprises two box body bottom plates which are spliced and welded, the interior of each box body bottom plate is of a hollow structure, division bars are distributed in the box body bottom plates in an array mode, the division bars extend along the length direction of the box body bottom plates, a cooling channel is formed between every two adjacent division bars, and the cooling channels are communicated with the box body bottom plates. The tops of the two box body bottom plates are provided with connectors, the connectors are downwards communicated with the cooling channel, the two connectors are distributed to be used for leading in and leading out cooling liquid, water passing holes are distributed in one end of the side portion of each box body bottom plate in the length direction of the box body bottom plate in an array mode, a supporting structure is arranged between every two adjacent water passing holes, and the water passing holes in the two box body bottom plates are arranged in a one-to-one opposite mode. Compared with the prior art, the utility model has the beneficial effects that: the port for connecting the internal cooling channel between the two box body bottom plates is arranged into the hole-shaped structure distributed in the array, so that the contact area between the two box body bottom plates is increased compared with the traditional single square hole, and the overall air tightness after welding is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile battery protection, and particularly relates to a cooling plate for an automobile battery box body. Background Art

[0002] Power batteries are an important part of new energy vehicles and can directly provide power for new energy vehicles. A large amount of heat is generated when power batteries provide power. If the heat is not discharged in time, it will affect the performance and service life of the batteries, and even cause the batteries to catch fire and result in casualties. Therefore, cooling plates are equipped on automobile battery box bodies to ensure that the batteries are in a reasonable temperature range.

[0003] In the prior art, most automobiles are equipped with extrusion aluminum liquid cooling plates. Water flow channels are integrated inside the aluminum plates. The batteries transfer heat to the aluminum plates through heat transfer, and finally the heat is carried away by the internal coolant, thus playing a role in cooling and temperature reduction. The extrusion aluminum liquid cooling plates are mostly spliced and welded by two or three aluminum plates. Rectangular openings are formed on adjacent two aluminum plates. Through the butt joint of the rectangular openings, it can be ensured that the flow inside different aluminum plates remains connected, thus forming a complete water circulation channel. However, when adjacent two aluminum plates are friction welded at the rectangular opening positions, due to the small contact surface and lack of support, the problem of aluminum plate deformation easily occurs, resulting in difficulty in ensuring the airtightness at the connection positions of the rectangular openings of the aluminum plates. Content of the Utility Model

[0004] In view of this, the utility model provides a cooling plate for an automobile battery box body, aiming to ensure the airtightness of the entire coolant channel.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] A cooling plate for an automobile battery box body includes two box body bottom plates that are welded and assembled. The inside of the box body bottom plates is of a hollow structure. Partition bars are distributed in an array inside the box body bottom plates. The partition bars extend along the length direction of the box body bottom plates. Cooling channels are formed between adjacent two partition bars. An interface is provided at the top of each of the two box body bottom plates. The interfaces are both connected downward to the cooling channels. The two interfaces are respectively used for introducing and discharging coolant. The feature is that corresponding communication areas are provided on one side of the two box body bottom plates where they are welded to each other. Water passing holes are distributed in an array on the communication areas. A support structure is provided between adjacent two water passing holes; each of the water passing holes on the two box body bottom plates is arranged to face each other.

[0007] With the above structure, by setting the ports connecting the internal cooling channels between the two box bottom plates into a hole-shaped structure with an array distribution, compared with the traditional single long-strip rectangular square hole, a lot of support structures are formed between the hole-shaped structures, ensuring better support strength and more welding area in the connection area of the aluminum plate, thus ensuring the welding strength and the airtightness at this place.

[0008] Preferably: side plates are provided on both the left and right sides of the box bottom plate, and each side plate is used to connect the two box bottom plates. A limiting convex block is provided on the side of the side plate facing the box bottom plate, and the limiting convex block is used to block the end of the cooling channel. With the above structure, the airtightness inside the box bottom plate is ensured through the limiting protrusion.

[0009] Preferably: a first mounting hole is arrayed and distributed on the top of the side plate, and a rivet nut is inserted into the first mounting hole; a positioning reference hole and a first positioning pin are provided on the top of the side plate. With the above structure, it is convenient to position and install the side plate on the vehicle body.

[0010] Preferably: an installation protrusion extending along the length direction is provided on the top of the box bottom plate, and a battery module mounting hole and a battery module positioning pin are provided on the top of the installation protrusion. With the above structure, it is convenient to position and install the battery module.

[0011] Preferably: an installation part is provided on the side of the box bottom plate away from the water passing hole, the length of the installation part exceeds the length of the cooling channel, and the side plate is arranged between the two installation parts. With the above structure, it is convenient to make the overall structure more compact and reduce the welding amount at the same time.

[0012] Preferably: a second mounting hole and a box sleeve mounting hole are arrayed and distributed along the length direction on the top of the installation part, a rivet nut is inserted into the second mounting hole, a box sleeve is installed in the box sleeve mounting hole, and a second positioning pin is provided on the top of the installation part. With the above structure, it is convenient to install the box bottom plate on the vehicle body.

[0013] Preferably: both the box bottom plate and the side plate are made of aluminum products, and the box bottom plate and the side plate are fixedly installed by friction welding. With the above structure, the stability of the entire cooling plate structure can be ensured.

[0014] Preferably: both ends of the spacer bar are placed inside the box bottom plate, and the left and right ends of each cooling channel are connected to each other. With the above structure, it can ensure that the coolant can flow in each cooling channel.

[0015] Preferably, reinforcing bars are provided at the bottom of the box body bottom plate. The reinforcing bars connect the two box body bottom plates, and the arrangement direction of the reinforcing bars is parallel to the side plates in space. With the above structure, the stable installation between the two box body bottom plates can be further ensured.

[0016] Compared with the prior art, the beneficial effects of the present utility model are:

[0017] By using the cooling plate for an automotive battery box body provided by the present utility model, the ports connecting the internal cooling channels between the two box body bottom plates are set as a hole-shaped structure with an array distribution. Compared with the traditional single long-strip rectangular square hole, a lot of support structures are formed between the hole-shaped structures, ensuring better support strength and more welding areas in the communication area of the aluminum plate, thereby ensuring the welding strength and airtightness at this place. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the cooling plate for an automotive battery box body;

[0019] Figure 2 is a three-dimensional structural schematic diagram of the box body bottom plate 1;

[0020] Figure 3 is a three-dimensional structural schematic diagram of the measuring plate 4;

[0021] Figure 4 is a sectional schematic diagram of the cooling plate for an automotive battery box body;

[0022] Figure 5 is a three-dimensional structural schematic diagram of the cooling plate for an automotive battery box body (looking up perspective). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below in conjunction with the embodiments and the drawings.

[0024] Such as Figure 1 and Figure 4As shown in the figure, a cooling plate for an automotive battery box includes two box bottom plates 1 assembled by welding. The interior of the box bottom plate 1 is a hollow structure, and partition strips 2 are arrayed inside the box bottom plate 1. The partition strips 2 extend along the length direction of the box bottom plate 1, and cooling channels 1a are formed between adjacent partition strips 2. At the top of both box bottom plates 1, interfaces 3 are fixedly installed. The interfaces 3 can communicate downward with the cooling channels 1a. In this embodiment, the two interfaces 3 are respectively used to introduce and discharge coolant. On one side where the two box bottom plates 1 are welded to each other, there are corresponding communication areas A. Water holes 1b are arrayed on the communication areas A, and there is a support structure 1d between adjacent water holes 1b. The water holes 1b on the two box bottom plates 1 are arranged in one-to-one correspondence. The coolant introduced through the interface 3 can flow along each cooling channel 1a to the water holes 1b, and flow through the water holes 1b into the cooling channels 1a inside the other box bottom plate 1, and finally be discharged from the other interface 3.

[0025] With such a design, by setting the ports connecting the internal cooling channels between the two box bottom plates 1 into a hole-shaped structure with an array distribution, compared with the traditional single long rectangular square hole, many support structures 1d are formed between the hole-shaped structures, ensuring that the aluminum plate has better support strength and more welding area in the communication area, thus ensuring the welding strength and the airtightness at this place.

[0026] As Figure 1 and Figure 3 shown in the figure, on both the left and right sides of the box bottom plate 1, a side plate 4 is installed. Each side plate 4 is used to connect the two box bottom plates 1, and a limiting lug 4a is formed on the side of the side plate 4 facing the box bottom plate 1. The limiting lug 4a can be clamped at the end of the box bottom plate 1, thereby blocking the end of the cooling channel 1a and ensuring the internal sealing of the box bottom plate 1.

[0027] As Figure 3 shown in the figure, first mounting holes 4b are arrayed on the top of the side plate 4. Rivet nuts 5 are inserted into the first mounting holes 4b, and a positioning reference hole 4c is formed at the middle position on the top of each side plate 4. A positioning pin 4d is also formed on the top of one of the side plates 4. With such a design, it is convenient to position and install the side plate 4 on the vehicle body.

[0028] As Figure 1 and Figure 2 shown in the figure, a mounting protrusion 6 extending along its length direction is formed on the top of the box bottom plate 1. A battery module mounting hole 6a and a battery module positioning pin 6b are formed on the top of the mounting protrusion 6, so as to ensure that the battery module can be stably installed on the cooling plate.

[0029] Again, as Figure 2As shown in the figure, on one side of the box body bottom plate 1 away from the water passing hole 1b, an installation part 1c is formed. The length of the installation part 1c exceeds the length of the cooling channel 1a, and the side plate 4 is arranged between the two installation parts 1c, so as to ensure that the whole cooling plate structure is more compact, and at the same time, the overall welding area can be reduced.

[0030] Furthermore, along the length direction of the top of the installation part 1c, second installation holes 1c1 and box body sleeve installation holes 1c2 are arranged in an array. A rivet nut 5 is inserted into the second installation hole 1c1, and a box body sleeve 7 is installed in the box body sleeve installation hole 1c2. In this way, it is convenient to install the cooling plate. On the installation part 1c of one box body bottom plate 1, a second positioning pin 1c3 is formed. Through the cooperation between the second positioning pin 1c3 and the first positioning pin 4d, it is more beneficial to install and position the cooling plate.

[0031] In this embodiment, both the box body bottom plate 1 and the side plate 4 are made of aluminum products, and the box body bottom plate 1 and the side plate 4 are fixedly installed by friction welding. As Figure 5 shown in the figure, two reinforcing rods 8 are welded at the bottom of the box body bottom plate 1. The two reinforcing rods 8 are arranged in parallel, and each reinforcing rod 8 is connected to two box body bottom plates 1, and the welding arrangement direction of the reinforcing rods 8 is parallel to the side plate 4 in space. With such a design, the structural stability of the cooling plate is further ensured.

[0032] As Figure 4 shown in the figure, in this embodiment, three partition bars 2 are formed inside each box body bottom plate 1. Both ends of each partition bar 2 are placed inside the box body bottom plate 1, so that the left and right ends of each cooling channel 1a are connected to each other.

[0033] In this embodiment, the number of box body bottom plates 1 can also be three. The three box body bottom plates 1 are fixedly installed together by friction welding. At this time, the side plate 4 and the reinforcing rods 8 are both used to connect the three box body bottom plates 1, and water passing holes 1b are formed in an array on both sides of the middle box body bottom plate 1. Each water passing hole 1b corresponds to the water passing hole 1b on the adjacent box body bottom plate 1 one by one, so as to ensure that the coolant can flow smoothly in the cooling channels 1a of each box body bottom plate 1.

[0034] Finally, it should be noted that the above description is only the preferred embodiment of the present invention. Under the inspiration of the present invention, those of ordinary skill in the art can make various similar representations without violating the purpose and claims of the present invention. Such transformations all fall within the protection scope of the present invention.

Claims

1. A cooling plate for an automobile battery box, comprising two box bottom plates (1) assembled by welding, the interior of the box bottom plates (1) being a hollow structure, the interior of the box bottom plates (1) being provided with spacers (2) arranged in an array, the spacers (2) extending along the length direction of the box bottom plates (1), a cooling channel (1a) being formed between two adjacent spacers (2), the tops of the two box bottom plates (1) being each provided with an interface (3), the interfaces (3) being downwardly connected to the cooling channel (1a), the two interfaces (3) being distributed for introducing and withdrawing a coolant, and characterized in that: The two box bottom plates (1) are both provided with corresponding communication areas (A) on one side where they are welded to each other, water holes (1b) are distributed in an array on the communication area (A), and a support structure (1d) is provided between two adjacent water holes (1b); the water holes (1b) on the two box bottom plates (1) are arranged one by one in direct opposition.

2. The cooling plate for an automobile battery box according to claim 1, characterized in that: Side panels (4) are provided on both the left and right sides of the box bottom plate (1), and each of the side panels (4) is used to connect the two box bottom plates (1). A limiting protrusion (4a) is provided on the side of the side panel (4) facing the box bottom plate (1), and the limiting protrusion (4a) is used to block the end of the cooling channel (1a).

3. The cooling plate for an automobile battery box according to claim 2, characterized in that: The top of the side plate (4) is provided with first mounting holes (4b) arranged in an array, and rivet nuts (5) are inserted into the first mounting holes (4b); A positioning reference hole (4c) and a first positioning pin (4d) are provided on the top of the side plate (4).

4. The cooling plate for an automobile battery box according to claim 1, characterized in that: The top of the box bottom plate (1) is provided with a mounting protrusion (6) extending along its length direction, and the top of the mounting protrusion (6) is provided with a battery module mounting hole (6a) and a battery module positioning pin (6b).

5. The cooling plate for an automobile battery box according to claim 3, characterized in that: A mounting portion (1c) is provided on a side of the box bottom plate (1) away from the water hole (1b); the length of the mounting portion (1c) exceeds the length of the cooling channel (1a), and the side plate (4) is provided between the two mounting portions (1c).

6. The cooling plate for an automobile battery box according to claim 5, characterized in that: The top of the mounting portion (1c) is provided with a second mounting hole (1c1) and a box sleeve mounting hole (1c2) arranged in an array along the length direction; the second mounting hole (1c1) is provided with the rivet nut (5); the box sleeve (7) is installed in the box sleeve mounting hole (1c2); and a second positioning pin (1c3) is provided at the top of the mounting portion (1c).

7. The cooling plate for an automobile battery box according to claim 2, characterized in that: The box bottom plate (1) and the side plates (4) are both made of aluminum, and the box bottom plate (1) and the side plates (4) are fixedly mounted by friction welding.

8. The cooling plate for an automobile battery box according to claim 1, characterized in that: Both ends of the spacer bar (2) are placed inside the box bottom plate (1), and the left and right ends of each cooling channel (1a) are connected to each other.

9. The cooling plate for an automobile battery box according to claim 2, characterized in that: A reinforcing rod (8) is provided at the bottom of the box bottom plate (1), the reinforcing rod (8) connects the two box bottom plates (1), and the arrangement direction of the reinforcing rod (8) is spatially parallel to the side plates (4).

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