New energy storage battery box structure

Abstract

The utility model discloses a new energy storage battery box structure, which comprises a liquid cooling plate, and a front frame, a rear frame, a left frame and a right frame which are arranged around the liquid cooling plate, a cooling channel is arranged in the liquid cooling plate, and the left frame and the right frame respectively extend towards the opposite sides to form a first extension section and a second extension section. The end parts of the first extension section and the second extension section are fixedly connected into a whole and form a mounting plane, the liquid cooling plate is fixedly arranged at the top of the mounting plane in a bonding manner, and the front frame and the rear frame are fixedly arranged at the front end and the rear end of the mounting plane respectively. The beneficial effects of the utility model are that the liquid cooling plates are fixedly mounted on the mounting plane in a gluing manner, so that compared with a traditional manner of welding the frame around the liquid cooling plates in a friction welding manner, the welding amount is greatly reduced, the welding between the liquid cooling plates is avoided, and the production efficiency is improved. And therefore, the liquid cooling plate is prevented from being deformed due to welding.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery box technology, specifically to a new energy storage battery box structure. Background Technology

[0002] Power batteries are an important component of new energy vehicles. In terms of structure, power batteries mainly consist of a battery housing and battery packs stacked inside the battery housing. In existing technologies, the battery housing often has a built-in water cooling system to facilitate battery heat dissipation.

[0003] The battery enclosure with its integrated water-cooling system mainly consists of a base plate, a front sealing plate, a rear sealing plate, a left frame, and a right frame. The base plate is composed of two liquid-cooled plates friction-welded together. The front sealing plate, rear sealing plate, left frame, and right frame are all fixed to the base plate using friction welding. In actual production, the amount of welding is enormous, and the amount of welding deformation is significant, making overall dimensional control difficult. Utility Model Content

[0004] In view of this, the present invention provides a new energy storage battery box structure, which aims to reduce the amount of welding required for the battery box.

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

[0006] A new energy storage battery box structure includes a liquid cooling plate and a front frame, a rear frame, a left frame, and a right frame disposed around the liquid cooling plate. The liquid cooling plate has a cooling channel inside. The structure is characterized in that: the bottom of the left frame has a first extension section extending toward the right frame, and the bottom of the right frame has a second extension section extending toward the left frame. The ends of the first extension section and the second extension section are fixedly connected as one piece, and the two sets of upper sides form a mounting plane. The front frame is fixedly installed between the front ends of the left and right frames, and the rear frame is fixedly installed between the rear ends of the left and right frames. The front frame, rear frame, left frame, right frame, and mounting plane form a rectangular mounting groove, and the liquid cooling plate is fixedly installed in the rectangular mounting groove by adhesive.

[0007] The above structure, with the rectangular mounting slot formed by the four sides, is very simple and stable. By fixing the liquid cooling plate in the rectangular mounting slot by adhesive, the amount of welding of the battery box is greatly reduced. At the same time, it avoids the damage to the internal structure of the liquid cooling plate caused by direct welding, thus ensuring the yield of the battery box.

[0008] Preferably, the bottom of the left frame has a first support section extending towards the right frame, and the bottom of the right frame has a second support section extending towards the left frame. The left and right ends of the liquid cooling plate are respectively supported on the first and second support sections. The top of the first support section has a first overflow groove, and the top of the second support section has a second overflow groove. Both the first and second overflow grooves are used to fill structural adhesive. This structure ensures that the left and right ends of the liquid cooling plate are supported, and the overflow grooves provide sufficient space for adhesive application.

[0009] Preferably, a reinforcing beam is provided between the left and right side frames, positioned at the front end of the mounting plane. The top of the reinforcing beam has a fourth adhesive overflow groove, and the front end of the liquid cooling plate is supported on the reinforcing beam. The fourth adhesive overflow groove is used to fill the structural adhesive. This structure increases the connection strength between the left and right side frames through the reinforcing beam, while also supporting the front end of the liquid cooling plate.

[0010] Preferably, the rear frame has a third support section extending forward from its bottom, and the top of the third support section has a third adhesive overflow groove. The rear end of the liquid cooling plate is supported on the third support section, and the third adhesive overflow groove is used to fill the structural adhesive. With the above structure, the rear end of the liquid cooling plate is supported by the third support section.

[0011] Preferably, the liquid cooling plate has an array of limiting structures extending rearward from its rear end. The rear frame has limiting slots corresponding to each limiting structure. After the liquid cooling plate is adhered to the rectangular mounting groove, each limiting structure can be secured within its respective limiting slot. This structure facilitates the positioning and installation of the liquid cooling plate.

[0012] Preferably, a front module mounting beam is provided at the top front end of the liquid cooling plate, and a middle crossbeam is provided at the top middle of the liquid cooling plate. Both the front module mounting beam and the middle crossbeam are riveted to the liquid cooling plate. With this structure, the front module mounting beam and the middle crossbeam ensure stable battery installation. The riveting method avoids welding the cooling plate, further reducing the amount of welding and preventing deformation of the cooling plate.

[0013] Preferably, the rear frame extends forward to form a rear module mounting section, and the front module mounting beam, the middle crossbeam, and the rear module mounting section are all used to prevent the battery from being squeezed. This structure prevents the battery from deforming due to thermal expansion, thus ensuring the battery's lifespan.

[0014] Preferably, the liquid cooling plate includes an upper liquid cooling plate and a lower liquid cooling plate arranged opposite each other, the cooling channel is integrally formed on the top surface of the lower liquid cooling plate, and the upper and lower liquid cooling plates are fixed together by welding. This structure simplifies the overall manufacturing of the liquid cooling plate and makes the structure more robust.

[0015] Preferably, the upper liquid cooling plate is provided with an inlet and an outlet at both ends of the cooling channel, and both the inlet and outlet are fixedly connected with connectors. This structure facilitates the injection and discharge of coolant.

[0016] Preferably, a buffer pad is provided between the mounting surface and the liquid cooling plate. This structure provides buffer protection for the bottom of the liquid cooling plate, preventing deformation due to pressure.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The new energy storage battery box structure provided by this utility model has a very simple and stable overall structure through the rectangular mounting groove formed by the four sides. By fixing the liquid cooling plate in the rectangular mounting groove by adhesive, the amount of welding of the battery box is greatly reduced. At the same time, it avoids the damage to the internal structure of the liquid cooling plate caused by direct welding, thereby ensuring the yield of the battery box. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of the battery box;

[0020] Figure 2 This is a structural diagram of the left border 4;

[0021] Figure 3 This is a partial cross-sectional view of the left border 4 in actual use.

[0022] Figure 4 This is a structural diagram of frame 5 on the right.

[0023] Figure 5 This is a partial cross-sectional view of the right frame 5 in its actual use state;

[0024] Figure 6 This is a schematic diagram of the structure of the rear border 3;

[0025] Figure 7 This is a partial cross-sectional view of the rear frame 3 in actual use.

[0026] Figure 8 To enhance the partial sectional view of beam 7 under actual use conditions;

[0027] Figure 9This is an exploded schematic diagram of liquid cooling plate 1;

[0028] Figure 10 This is a diagram showing the location distribution of the buffer pad 11. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0030] like Figure 1 As shown, a new energy storage battery box structure includes a liquid cooling plate 1 and a front frame 2, a rear frame 3, a left frame 4, and a right frame 5 installed around the liquid cooling plate 1. The liquid cooling plate 1 has a cooling channel 1b1 inside, which is used to inject coolant to absorb the heat generated by the battery. The bottom of the left frame 4 has a first extension segment 4a extending towards the right frame 5, and the bottom of the right frame 5 has a second extension segment 5a extending towards the left frame 4. The ends of the first extension segment 4a and the second extension segment 5a are fixedly connected as one unit by friction welding, and the top surfaces of the first extension segment 4a and the second extension segment 5a form a mounting plane a. The front frame 2 is fixedly installed between the front ends of the left frame 4 and the right frame 5, and the rear frame 3 is fixedly installed between the rear ends of the left frame 4 and the right frame 5. The front frame 2, the rear frame 3, the left frame 4, the right frame 5, and the mounting plane a form a rectangular mounting groove b, and the liquid cooling plate 1 is fixedly installed inside the rectangular mounting groove b by adhesive bonding. In this embodiment, the front frame 2 and the rear frame 3 are preferably fixedly installed at the front and rear ends of the mounting plane a by welding. In addition, threaded installation, riveting and other methods are also acceptable.

[0031] By welding and fixing the various frames together to form a rectangular mounting groove b, the overall structure of the battery box is made very simple and stable. The liquid cooling plate 1 is fixed in the rectangular mounting groove b by adhesive, which greatly reduces the amount of welding of the battery box and avoids damage to the internal structure of the liquid cooling plate 1 caused by direct welding, thereby ensuring the yield of the battery box.

[0032] Specifically, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 10As shown, a first support section 4b extends from the bottom of the left frame 4 toward the right frame 5, and a second support section 5b extends from the bottom of the right frame 5 toward the left frame 4. The left and right ends of the liquid cooling plate 1 are respectively supported on the first support section 4b and the second support section 5b. A first overflow groove 4c with a rectangular structure is formed on the top of the first support section 4b along its length, and a second overflow groove 5c with a rectangular structure is formed on the top of the second support section 5b along its length. Both the first overflow groove 4c and the second overflow groove 5c are used to fill structural adhesive 6. The structural adhesive 6 can fix the left and right ends of the liquid cooling plate 1 on the first support section 4b and the second support section 5b. The first support section 4b and the second support section 5b can ensure sufficient space for adhesive application, thereby ensuring the stability of the overall structure.

[0033] Furthermore, such as Figure 8 and Figure 10 As shown, a reinforcing beam 7 is also provided between the left frame 4 and the right frame 5. In this embodiment, the reinforcing beam 7 is fixedly installed at the front end of the mounting plane a by welding. A fourth overflow groove 7a is formed on the top of the reinforcing beam 7. The front end of the liquid cooling plate 1 is fixedly supported on the top of the reinforcing beam 7. The fourth overflow groove 7a is also used to fill the structural adhesive 6.

[0034] Furthermore, such as Figure 6 and Figure 7 As shown, the top of the rear frame 3 extends forward to form a third support section 3a, and the top of the third support section 3a is formed with a third overflow groove 3b. The rear end of the liquid cooling plate 1 is fixedly supported on the top of the third support section 3a, and the interior of the third overflow groove 3b is also used to fill the structural adhesive 6.

[0035] like Figure 7 and Figure 9 As shown, the liquid cooling plate 1 has an array of limiting structures 1c extending rearward from its rear end. The rear frame 3 has corresponding limiting slots 3c formed around each limiting structure 1c. After the liquid cooling plate 1 is adhered to each support section using structural adhesive 6, each limiting structure 1c can be secured within its respective limiting slot 3c. The design of the limiting structures 1c and limiting slots 3c facilitates the positioning and installation of the liquid cooling plate 1, ensuring product consistency.

[0036] like Figure 1 As shown, a front module mounting beam 8 is installed at the top front end of the liquid cooling plate 1, and a middle crossbeam 9 is installed at the top middle of the liquid cooling plate 1. Both the front module mounting beam 8 and the middle crossbeam 9 are fixedly connected to the liquid cooling plate 1 by riveting. In this embodiment, rivets are inserted from the bottom of the liquid cooling plate 1 and riveted to the front module mounting beam 8 and the middle crossbeam 9. The front module mounting beam 8 and the middle crossbeam 9 ensure the overall structural strength of the battery box, while the riveting process further avoids welding on the liquid cooling plate 1.

[0037] Furthermore, such as Figure 6 As shown, the rear frame 3 extends forward to form a rear module mounting section 3d. The front module mounting beam 8, the middle crossbeam 9, and the top of the rear module mounting section 3d can all be used to mount expansion beams to prevent the battery from being squeezed and deformed when it expands due to heat, thus ensuring the battery's service life. In this embodiment, the traditional rear module mounting beam and rear side beam are rolled and integrally formed into a single rear frame 3, reducing the overall number of parts and thus lowering the processing difficulty.

[0038] like Figure 9 As shown, the liquid cooling plate 1 includes an upper liquid cooling plate 1a and a lower liquid cooling plate 1b arranged opposite each other. The cooling channel 1b1 is integrally formed by stamping on the top of the lower liquid cooling plate 1b, and the upper liquid cooling plate 1a and the lower liquid cooling plate 1b are fixedly connected by brazing. This design makes the overall structure of the liquid cooling plate 1 very simple and stable, and the overall manufacturing process of the liquid cooling plate 1 is also very simple.

[0039] Furthermore, the upper liquid cooling plate 1a has an inlet 1a1 and an outlet 1a2 at both ends of the cooling channel 1b1. Both the inlet 1a1 and the outlet 1a2 are fixedly installed with connectors 10 by brazing. The inlet 1a1 and the outlet 1a2 can ensure the injection and discharge of coolant, thereby facilitating the heat dissipation of the battery.

[0040] like Figure 8 and Figure 10 As shown, buffer pads 11 are arrayed on the top of the mounting plane a. Since the cooling channel 1b1 is integrally formed by stamping, a corresponding protruding structure 1b2 is formed on the bottom of the lower liquid cooling plate 1b. After the liquid cooling plate 1 is fixedly installed on the top of the rectangular mounting plane by structural adhesive 6, the protruding structure 1b2 can be supported on the buffer pads 11. This design can prevent the liquid cooling plate 1 from deforming downwards when the middle is compressed.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A new energy storage battery housing structure, comprising a liquid cooling plate (1) and a front frame (2), a rear frame (3), a left frame (4), and a right frame (5) disposed around the liquid cooling plate (1), wherein the liquid cooling plate (1) has a cooling channel (1b1) inside, characterized in that: The bottom of the left frame (4) is provided with a first extension section (4a) extending toward the right frame (5), and the bottom of the right frame (5) is provided with a second extension section (5a) extending toward the left frame (4). The ends of the first extension section (4a) and the second extension section (5a) are fixedly connected as one unit, and the two sets of upper sides form an installation plane (a). The front frame (2) is fixedly installed between the front ends of the left frame (4) and the right frame (5), and the rear frame (3) is fixedly installed between the rear ends of the left frame (4) and the right frame (5). The front frame (2), the rear frame (3), the left frame (4), the right frame (5) and the installation plane (a) form a rectangular installation groove (b). The liquid cooling plate (1) is fixedly installed in the rectangular installation groove (b) by adhesive.

2. The new energy storage battery box structure according to claim 1, characterized in that: The bottom of the left frame (4) is provided with a first support section (4b) extending toward the right frame (5), and the bottom of the right frame (5) is provided with a second support section (5b) extending toward the left frame (4). The left and right ends of the liquid cooling plate (1) are respectively supported on the first support section (4b) and the second support section (5b). The first support segment (4b) has a first overflow groove (4c) at its top, and the second support segment (5b) has a second overflow groove (5c) at its top. Both the first overflow groove (4c) and the second overflow groove (5c) are used to fill structural adhesive (6).

3. The new energy storage battery box structure according to claim 2, characterized in that: A reinforcing beam (7) is provided between the left frame (4) and the right frame (5). The reinforcing beam (7) is located at the front end of the mounting plane (a). The top of the reinforcing beam (7) has a fourth overflow groove (7a). The front end of the liquid cooling plate (1) is supported on the reinforcing beam (7). The fourth overflow groove (7a) is used to fill the structural adhesive (6).

4. The new energy storage battery box structure according to claim 3, characterized in that: The rear frame (3) extends forward from the bottom to form a third support section (3a), and the top of the third support section (3a) has a third overflow groove (3b). The rear end of the liquid cooling plate (1) is supported on the third support section (3a), and the third overflow groove (3b) is used to fill the structural adhesive (6).

5. The new energy storage battery box structure according to claim 4, characterized in that: The liquid cooling plate (1) has an array of limiting structures (1c) extending rearward from its rear end. The rear frame (3) is provided with limiting slots (3c) corresponding to each of the limiting structures (1c). After the liquid cooling plate (1) is glued into the rectangular mounting groove (b), each of the limiting structures (1c) can be locked into each of the limiting slots (3c).

6. The new energy storage battery box structure according to claim 5, characterized in that: The front end of the liquid cooling plate (1) is provided with a front module mounting beam (8), and the middle top of the liquid cooling plate (1) is provided with a middle cross beam (9). Both the front module mounting beam (8) and the middle cross beam (9) are riveted to the liquid cooling plate (1).

7. The new energy storage battery box structure according to claim 6, characterized in that: The rear frame (3) extends forward to form a rear module mounting section (3d). The front module mounting beam (8), the middle crossbeam (9), and the rear module mounting section (3d) are all used to prevent the battery from being squeezed.

8. The new energy storage battery box structure according to claim 1, characterized in that: The liquid cooling plate (1) includes an upper liquid cooling plate (1a) and a lower liquid cooling plate (1b) arranged opposite each other. The cooling channel (1b1) is integrally formed on the top surface of the lower liquid cooling plate (1b). The upper liquid cooling plate (1a) and the lower liquid cooling plate (1b) are fixed together by welding.

9. The new energy storage battery box structure according to claim 8, characterized in that: The upper liquid cooling plate (1a) is provided with an inlet (1a1) and an outlet (1a2) at both ends of the cooling channel (1b1), and the inlet (1a1) and outlet (1a2) are fixedly connected with connectors (10).

10. The new energy storage battery box structure according to claim 1, characterized in that: A buffer pad (11) is provided between the mounting plane (a) and the liquid cooling plate (1).

Images