New energy battery tray cooling plate

Abstract

The utility model relates to the technical field of battery boxes, in particular to a new energy battery tray cooling plate which comprises a lower cooling plate, an upper cooling plate, a water inlet pipe, a water outlet pipe and a plurality of bolts, the lower cold plate comprises a bottom plate and a bottom frame arranged on the bottom plate; the upper cooling plate fixedly covers the bottom plate through bolts and is positioned on the inner side of the bottom frame; a liquid cooling flow channel with open head and tail ends is formed between the bottom plate and the upper cooling plate; the water inlet pipe and the water outlet pipe are arranged on the bottom frame, the head end of the liquid cooling flow channel is communicated with the water inlet pipe, and the tail end of the liquid cooling flow channel is communicated with the water outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of battery boxes, and specifically relates to a new energy battery tray cooling plate. Background Art

[0002] The battery pack includes a shell, a battery cell group arranged in the shell, and a circuit board that controls the charging and discharging status of the battery pack. The battery pack generally has waterproof requirements, so the battery pack needs to be installed in a closed space. However, during the use of the battery pack, the battery pack will continuously generate heat. When the temperature accumulates to a certain level, it will affect the performance of the battery pack, thereby affecting the service life of the entire battery pack, and may even cause thermal runaway, directly damaging the battery pack and causing a fire accident.

[0003] In order to solve the heat dissipation problem of the battery pack, a top liquid cooling solution is generally adopted, that is, a liquid cooling plate is installed at the heat dissipation end of the battery pack. The existing liquid cooling plate, for example, a Chinese patent for a liquid cooling plate integrated on the battery pack box, announcement number: CN212461820U, achieves the purpose of heat exchange by setting a battery module heat exchange area and a flow channel inside the liquid cooling plate. This liquid cooling plate is generally made of two overlapping metal plates during production. The metal plates are fixed after overlapping by bonding, welding or forging. After fixing, the two metal plates become a whole. The flow channel is located between the two metal plates. The two metal plates are difficult to separate, which makes the later maintenance of the liquid cooling plate very difficult, especially in the case of flow channel blockage, the maintenance cost will be greatly increased. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a new energy battery tray cooling plate, which can reduce the difficulty of cooling plate maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new energy battery tray cooling plate, comprising a lower cold plate, an upper cold plate, a water inlet pipe, a water outlet pipe and a plurality of bolts; the lower cold plate comprises a bottom plate and a bottom frame arranged on the bottom plate; the upper cold plate is fixed on the bottom plate by a bolt cover and the upper cold plate is located on the inner side of the bottom frame; a liquid cooling channel with open head and tail ends is provided between the bottom plate and the upper cold plate; the water inlet pipe and the water outlet pipe are both provided on the bottom frame, and the head end of the liquid cooling channel is connected to the water inlet pipe, and the tail end is connected to the water outlet pipe.

[0006] Preferably, the inner wall of the bottom frame is in seamless contact with the outer edge of the upper cold plate.

[0007] Preferably, a sealing layer is provided between the inner wall of the bottom frame and the outer edge of the upper cold plate.

[0008] Preferably, the upper end of the bottom frame is flush with the upper end of the upper cold plate.

[0009] Preferably, the lower cold plate further includes reinforcing ribs; the reinforcing ribs are arranged at the lower end of the bottom plate.

[0010] Preferably, the liquid cooling channel consists of a lower channel and an upper channel, the lower channel is located at the upper end of the bottom plate body, and the upper channel is located at the lower end of the upper cold plate body.

[0011] Preferably, a plurality of lower grooves are formed at the upper end of the bottom plate; a plurality of upper grooves are formed at the lower end of the upper cold plate; and the lower grooves correspond to the upper grooves one by one.

[0012] Preferably, the bottom plate is provided with a plurality of lower through holes; and the upper cold plate is provided with upper through holes corresponding to the lower through holes one by one.

[0013] Preferably, a plurality of lower grooves and upper grooves are distributed along the liquid cooling channel.

[0014] Preferably, the lower cold plate and the upper cold plate are both made of metal aluminum.

[0015] Compared with the prior art, the beneficial effects of the present invention are: by setting a bottom frame on the bottom plate, the upper cold plate is fixed on the bottom plate, and the inner size of the bottom frame is matched with the size of the upper cold plate, the assembly efficiency of the cooling plate can be improved, and a liquid cooling channel is opened between the upper cold plate and the bottom plate, and the upper cold plate and the bottom plate are fixed by bolts. Compared with the prior art, the present cooling plate is easier to assemble and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the upper structure of the cooling plate of the utility model;

[0017] Figure 2 This is a structural schematic diagram of the upper side of the lower cold plate of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the lower side of the lower cold plate of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the lower side of the upper cold plate of the utility model.

[0020] In the figure: 1 lower cold plate, 2 upper cold plate, 3 water inlet pipe, 4 water outlet pipe, 11 bottom plate, 12 bottom frame, 13 reinforcing ribs, 111 lower flow channel, 112 lower groove, 113 lower through hole, 21 upper flow channel, 22 upper through hole, 23 upper groove. DETAILED DESCRIPTION

[0021] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0022] Specific embodiment 1: Please refer to Figure 1-4 A new energy battery tray cooling plate is used to improve the heat dissipation of a battery pack, comprising: a lower cold plate 1, an upper cold plate 2, a water inlet pipe 3, a water outlet pipe 4 and a plurality of bolts. The upper cold plate 2 is fixedly covered on the lower cold plate 1 by bolts, and a liquid cooling channel open at both ends is provided between the lower cold plate 1 and the upper cold plate 2. The water inlet pipe 3 and the water outlet pipe 4 are both provided on the lower cold plate 1, and the head end of the liquid cooling channel is connected with the water inlet pipe 3, and the tail end is connected with the water outlet pipe 4. When in use, the water inlet pipe 3 and the water outlet pipe 4 are connected to the refrigerant, so that the refrigerant can enter the liquid cooling channel through the water inlet pipe 3 and then flow out from the water outlet pipe 4. In this process, the refrigerant can continuously exchange heat and cold with the lower cold plate 1 and the upper cold plate 2, so that the battery pack reaches an ideal operating temperature and improves the working performance of the battery pack.

[0023] Specifically, the lower cold plate 1 includes a bottom plate 11, a bottom frame 12, and reinforcing ribs 13. A continuous lower flow channel 111 and a plurality of lower grooves 112 are provided on the upper end surface of the bottom plate 11. The plurality of lower grooves 112 are evenly distributed along the direction of the lower flow channel 111. The opening of the lower grooves 112 can make the heat on the cooling plate more concentrated, and further improve the efficiency of heat exchange of the cooling plate; the bottom plate 11 is also provided with a plurality of lower through holes 113, and the plurality of lower through holes 113 are evenly distributed on the body of the bottom plate 11; the bottom frame 12 is arranged at the upper end of the bottom plate 11, and the lower flow channel 111, the lower grooves 112 and the lower through holes 113 are all located on the inner side of the bottom frame 12; the reinforcing ribs 13 are arranged at the lower end of the bottom plate 11, and are used to enhance the bending strength of the cooling plate.

[0024] A continuous upper flow channel 21, an upper through hole 22 and an upper groove 23 are provided on the lower end surface of the upper cold plate 2, and a plurality of upper through holes 22 and upper grooves 23 are provided; a plurality of upper grooves 23 are evenly distributed along the direction of the upper flow channel 21, and the opening of the upper grooves 23 can make the heat on the cooling plate more concentrated, and further improve the efficiency of heat exchange of the cooling plate; during implementation, the upper flow channel 21 is distributed in a serpentine shape on the main body of the upper cold plate 2 to achieve the purpose of full coverage; further, the upper flow channel 21 has the same structure as the lower flow channel 111;

[0025] After assembly, the upper cold plate 2 is fixed on the lower cold plate 1 by bolts, the upper cold plate 2 is located on the inner side of the bottom frame 12, and the upper flow channel 21 and the lower flow channel 111 constitute a liquid cooling flow channel; the upper through hole 22 corresponds to the lower through hole 113 one by one, and is used to accommodate fixing bolts; the upper groove 23 corresponds to the lower groove 112 one by one; further, the upper end of the bottom frame 12 is flush with the upper end of the upper cold plate 2 to ensure the integrity of the cooling plate; in addition, the outer edge of the bottom frame 12 and the upper cold plate 2 is in seamless contact. In a preferred embodiment, a sealing layer can also be provided between the outer edge of the bottom frame 12 and the upper cold plate 2 to prevent leakage of the liquid cooling flow channel.

[0026] In this embodiment, the lower cold plate 1 and the upper cold plate 2 are both made of metal aluminum.

[0027] Through the technical solution, by setting a bottom frame on the bottom plate, the upper cold plate is fixed on the bottom plate, and the inner size of the bottom frame is matched with the size of the upper cold plate, the assembly efficiency of the cooling plate can be improved, and a liquid cooling channel is opened between the upper cold plate and the bottom plate, and the upper cold plate and the bottom plate are fixed by bolts. Compared with the prior art, the cooling plate is easier to assemble and maintain.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy battery tray cooling plate, characterized in that: The invention comprises a lower cold plate (1), an upper cold plate (2), a water inlet pipe (3), a water outlet pipe (4) and a plurality of bolts; the lower cold plate (1) comprises a bottom plate (11) and a bottom frame (12) arranged on the bottom plate (11); the upper cold plate (2) is arranged on the bottom plate (11) by means of a bolt fixing cover and the upper cold plate (2) is located on the inner side of the bottom frame (12); a liquid cooling flow channel with its head and tail ends open is provided between the bottom plate (11) and the upper cold plate (2); the water inlet pipe (3) and the water outlet pipe (4) are both arranged on the bottom frame (12), the head end of the liquid cooling flow channel is connected to the water inlet pipe (3), and the tail end is connected to the water outlet pipe (4).

2. A new energy battery tray cooling plate according to claim 1, characterized in that: The inner wall of the bottom frame (12) is in seamless contact with the outer edge of the upper cold plate (2).

3. The new energy battery tray cooling plate according to claim 1, characterized in that: A sealing layer is also provided between the inner wall of the bottom frame (12) and the outer edge of the upper cold plate (2).

4. The new energy battery tray cooling plate according to claim 1, characterized in that: The upper end of the bottom frame (12) is flush with the upper end of the upper cold plate (2).

5. The new energy battery tray cooling plate according to claim 1, characterized in that: The lower cold plate (1) further comprises a reinforcing rib (13); the reinforcing rib (13) is arranged at the lower end of the bottom plate (11).

6. The new energy battery tray cooling plate according to claim 1, characterized in that: The liquid cooling channel consists of a lower channel (111) and an upper channel (21), the lower channel (111) being located at the upper end of the bottom plate (11) body, and the upper channel (21) being located at the lower end of the upper cold plate (2) body.

7. The new energy battery tray cooling plate according to claim 1, characterized in that: The upper end of the bottom plate (11) is provided with a plurality of lower grooves (112); the lower end of the upper cold plate (2) is provided with a plurality of upper grooves (23); the lower grooves (112) correspond to the upper grooves (23) one by one.

8. The new energy battery tray cooling plate according to claim 1, characterized in that: The bottom plate (11) is provided with a plurality of lower through holes (113); and the upper cold plate (2) is provided with upper through holes (22) corresponding one to one to the lower through holes (113).

9. The new energy battery tray cooling plate according to claim 7, characterized in that: A plurality of lower grooves (112) and upper grooves (23) are distributed along the liquid cooling channel.

10. The new energy battery tray cooling plate according to claim 1, characterized in that: The lower cold plate (1) and the upper cold plate (2) are both made of metal aluminum.

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