Battery pack structure with good heat dissipation

Abstract

The utility model discloses a battery pack structure with good heat dissipation, which comprises a shell, the top of the shell is fixedly connected with a top cover, a plurality of horizontal cooling plates are arranged on one side in the shell, a horizontally arranged battery cell is arranged between every two adjacent cooling plates, a coiled pipe is fixed in each cooling plate, and the coiled pipe is fixedly connected with the top cover. A water inlet and a water outlet are formed in the two ends of the coiled pipe respectively and located outside the cooling plate, and a water tank is fixed to the outer side wall of the shell. According to the utility model, the shell, the top cover, the plurality of cooling plates, the water tank, the cooling assembly and the pump body are arranged, the coiled pipes are arranged in the cooling plates, the battery cells which are horizontally arranged are arranged between every two adjacent cooling plates, and cooling water in the water tank can be pumped out through the pump body and pumped into the coiled pipes in the cooling plates, so that the cooling plates are refrigerated; and the two sides of each battery core are in contact with the cooling plates, so that the cooling and heat dissipation effects on the wire cores can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack structure with good heat dissipation. Background Art

[0002] A battery pack is a whole composed of multiple batteries, which is generally used in electric vehicles, drones, mobile power supplies and other devices to provide power. Battery packs can be divided into lead-acid battery packs, lithium battery packs, ternary lithium battery packs, etc. Battery packs are different from ordinary batteries. They have higher energy storage density, longer life and stronger output power. Therefore, in certain specific occasions, battery packs are a better choice of energy source. Usually, a cooling and heat dissipation structure is set inside the battery pack.

[0003] Most existing battery packs currently use water cooling for heat dissipation. The battery pack structure includes a shell and a water cooling plate at the bottom of the shell, and then the battery cells are installed on the surface of the water cooling plate. However, this structure has a disadvantage that the battery cells are generally installed vertically, so the contact area between the battery cells and the bottom water cooling plate is small, resulting in poor heat dissipation effect for the battery cells installed on the top. Therefore, the utility model proposes a battery pack structure with good heat dissipation. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art and proposes a battery pack structure with good heat dissipation.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a battery pack structure with good heat dissipation, including an outer shell, a top cover fixedly connected to the top of the outer shell, a plurality of horizontal cooling plates are provided on one side of the inner part of the outer shell, a horizontally arranged battery cell is installed between two adjacent cooling plates, a serpentine tube is fixed inside each cooling plate, the two ends of the serpentine tube are respectively a water inlet and a water outlet, and the water inlet and the water outlet are both located outside the cooling plate, a water tank is fixed to the outer wall of the outer shell, a cooling assembly is fixedly installed on the side of the water tank away from the outer shell, and a pump body connecting the water tank and the plurality of serpentine tubes is fixed inside the outer shell.

[0006] Furthermore, a side plate is fixed to the side edge of the top end of the shell, and the top cover and the side plate are fixedly connected by bolts.

[0007] Furthermore, the cooling assembly includes a semiconductor refrigeration plate fixed to the outer side wall of the water tank, and a plurality of fins are fixed on the cooling side of the semiconductor refrigeration plate, and the fins extend through the side wall of the water tank to the inside of the water tank.

[0008] Furthermore, the water inlet end of the pump body is fixedly connected to a suction pipe, and the suction pipe is connected to the water tank; the water outlet end of the pump body is fixedly connected to a drainage main pipe, and a plurality of drainage branch pipes are fixedly connected to the other end of the drainage main pipe, and the other ends of the plurality of drainage branch pipes are respectively connected to the water inlets of a plurality of serpentine pipes; the top of the water tank is fixedly connected to a return water main pipe, and the other end of the return water main pipe is fixedly connected to a plurality of return water branch pipes, and the other ends of the plurality of return water branch pipes are respectively connected to the water outlets of a plurality of serpentine pipes.

[0009] Furthermore, the surfaces of the water inlet and outlet of the serpentine tube are both provided with threads, and the surfaces of the drainage branch pipe and the return branch pipe close to one end of the cooling plate are slidably connected with internal threaded caps, and the internal threaded caps can be screwed onto the surface of the water inlet or outlet.

[0010] Furthermore, an annular slide groove is provided on the inner wall of the internal threaded cap, and limiting rings are fixed on the surfaces of the drainage branch pipe and the return branch pipe close to one end of the internal threaded cap. The limiting rings are located inside the slide groove and are slidably connected to the slide groove.

[0011] Furthermore, two vertical limiting ridges are fixed on both sides of the inner wall of the shell, and the limiting ridges are in contact with the side edges of the multiple cooling plates.

[0012] Beneficial effects of the utility model:

[0013] When the utility model is in use, a battery pack structure with good heat dissipation is provided with an outer shell, a top cover, multiple cooling plates, a water tank, a cooling assembly and a pump body. A serpentine tube is provided inside the cooling plate, and a horizontally placed battery cell is provided between two adjacent cooling plates. The cooling water in the water tank can be pumped out by the pump body and pumped into the serpentine tube inside each cooling plate, so as to cool the cooling plate. Since both sides of each battery cell are in contact with the cooling plate, the cooling and heat dissipation effect of the battery cell can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 : An overall cross-sectional view of the utility model;

[0016] Figure 2 : A partial stereogram of the utility model;

[0017] Figure 3 :The utility model Figure 1 Enlarged view of point A in the middle.

[0018] The reference numerals are as follows:

[0019] 1. Casing; 2. Top cover; 3. Side panel; 4. Cooling plate; 5. Battery cell; 6. Serpentine tube; 61. Water inlet; 62. Water outlet; 7. Water tank; 8. Cooling assembly; 81. Semiconductor cooling sheet; 82. Fin; 9. Pump body; 10. Suction pipe; 11. Drainage main pipe; 12. Return water main pipe; 13. Drainage branch pipe; 14. Return water branch pipe; 15. Internal threaded cap; 16. Slide groove; 17. Limiting ring; 18. Limiting ridge. DETAILED DESCRIPTION

[0020] 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.

[0021] like Figure 1-Figure 3 As shown, it relates to a battery pack structure with good heat dissipation, including an outer shell 1, a top cover 2 is fixedly connected to the top of the outer shell 1, a plurality of horizontal cooling plates 4 are arranged on one side inside the outer shell 1, a horizontally arranged battery cell 5 is installed between two adjacent cooling plates 4, a serpentine tube 6 is fixed inside each cooling plate 4, the two ends of the serpentine tube 6 are respectively a water inlet 61 and a water outlet 62, and the water inlet 61 and the water outlet 62 are both located outside the cooling plate 4, a water tank 7 is fixed to the outer wall of the outer shell 1, a cooling assembly 8 is fixedly installed on the side of the water tank 7 away from the outer shell 1, and a pump body 9 connecting the water tank 7 and the plurality of serpentine tubes 6 is fixed inside the outer shell 1.

[0022] A side plate 3 is fixed to the top side of the housing 1, and the top cover 2 is fixedly connected to the side plate 3 by bolts.

[0023] During installation, the top cover 2 can be fixed to the top of the housing 1 by bolts, and a sealing strip can be provided between the lower surface of the top cover 2 and the top of the housing 1 to increase the sealing performance.

[0024] The cooling assembly 8 includes a semiconductor refrigeration sheet 81 fixed to the outer wall of the water tank 7 . A plurality of fins 82 are fixed to the cooling side of the semiconductor refrigeration sheet 81 . The fins 82 extend through the side wall of the water tank 7 to the inside of the water tank 7 .

[0025] The fins 82 can be cooled by the cooling side of the semiconductor cooling plate 81 , and the water in the water tank 7 can be cooled by the fins 82 , thereby circulating and cooling the water in the water tank 7 .

[0026] A water suction pipe 10 is fixedly connected to the water inlet end of the pump body 9, and the water suction pipe 10 is communicated with the water tank 7; a water discharge end of the pump body 9 is fixedly connected to a drainage main pipe 11, and a plurality of drainage branch pipes 13 are fixedly connected to the other end of the drainage main pipe 11, and the other ends of the plurality of drainage branch pipes 13 are respectively communicated with the water inlets 61 of the plurality of serpentine pipes 6; a water return main pipe 12 is fixedly connected to the top of the water tank 7, and a plurality of return branch pipes 14 are fixedly connected to the other end of the return main pipe 12, and the other ends of the plurality of return branch pipes 14 are respectively communicated with the water outlets 62 of the plurality of serpentine pipes 6.

[0027] Driven by the pump body 9, the cooling water in the water tank 7 can be continuously pumped out, and then the cooling water is pumped into multiple serpentine tubes 6 through the drainage main pipe 11 and the drainage branch pipe 13. The serpentine tubes 6 are used to cool the cooling plate 4. The water after heat exchange returns to the water tank 7 through the return branch pipe 14 and the return main pipe 12 to continue cooling, thereby realizing a cooling cycle.

[0028] The surfaces of the water inlet 61 and the water outlet 62 of the serpentine tube 6 are both provided with threads, and the surfaces of the drainage branch pipe 13 and the return branch pipe 14 close to the cooling plate 4 are slidably connected with an internal threaded cap 15, and the internal threaded cap 15 can be screwed onto the surface of the water inlet 61 or the water outlet 62.

[0029] The internal thread cap 15 can be used to fix the drainage branch pipe 13 with the water inlet 61, and the return branch pipe 14 can also be connected with the water outlet 62, making the structure more convenient in the early stage of assembly.

[0030] An annular slide groove 16 is formed on the inner wall of the internal thread cap 15 , and a limiting ring 17 is fixed to the surface of the drainage branch pipe 13 and the return branch pipe 14 near one end of the internal thread cap 15 . The limiting ring 17 is located inside the slide groove 16 and is slidably connected to the slide groove 16 .

[0031] The limiting ring 17 slides inside the slide groove 16 to prevent the internal thread caps 15 on the surfaces of the drainage branch pipe 13 and the return branch pipe 14 from being separated from each other.

[0032] Two vertical limiting ridges 18 are fixed on both sides of the inner wall of the housing 1 , and the limiting ridges 18 are in contact with the sides of the plurality of cooling plates 4 .

[0033] When the cooling plate 4 is placed inside the housing 1 , the limiting ridges 18 can position the cooling plate 4 , making installation more convenient.

[0034] Working principle: When installing the battery pack structure, first put a cooling plate 4 inside the shell 1, then install the battery cell 5 horizontally on the surface of the cooling plate 4, and then place the cooling plate 4 on the surface of the battery cell 5. After stacking and installing in this way, the drainage branch pipe 13 and the return branch pipe 14 are fixedly connected to the water inlet 61 and the water outlet 62 of the serpentine pipe 6 respectively. After the connection is completed, fix the top cover 2 on the top of the shell 1. During the operation of the battery pack, the cooling water in the water tank 7 is continuously pumped into the multiple serpentine pipes 6 through the pump body 9, and the cooling plate 4 is used to cool the cooling plate 4, and then the cooling plate 4 cools the battery cell 5. Since both sides of the horizontally arranged battery cell 5 are in contact with the cooling plate 4, the heat dissipation effect is better.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A battery pack structure with good heat dissipation, comprising a housing (1), characterized in that: The top of the shell (1) is fixedly connected to a top cover (2); a plurality of horizontal cooling plates (4) are provided on one side of the interior of the shell (1); a horizontally arranged battery cell (5) is installed between two adjacent cooling plates (4); a serpentine tube (6) is fixed inside each cooling plate (4); two ends of the serpentine tube (6) are respectively a water inlet (61) and a water outlet (62); and the water inlet (61) and the water outlet (62) are both located outside the cooling plate (4); a water tank (7) is fixed to the outer wall of the shell (1); a cooling assembly (8) is fixedly installed on the side of the water tank (7) away from the shell (1); and a pump body (9) connecting the water tank (7) and the plurality of serpentine tubes (6) is fixed inside the shell (1).

2. A battery pack structure with good heat dissipation according to claim 1, characterized in that: A side plate (3) is fixed to the top side of the housing (1), and the top cover (2) and the side plate (3) are fixedly connected by bolts.

3. A battery pack structure with good heat dissipation according to claim 1, characterized in that: The cooling assembly (8) comprises a semiconductor refrigeration plate (81) fixed to the outer wall of the water tank (7), a plurality of fins (82) are fixed on the cooling side of the semiconductor refrigeration plate (81), and the fins (82) pass through the side wall of the water tank (7) and extend into the interior of the water tank (7).

4. A battery pack structure with good heat dissipation according to claim 1, characterized in that: The water inlet end of the pump body (9) is fixedly connected to a water pump pipe (10), and the water pump pipe (10) is connected to the water tank (7); the water outlet end of the pump body (9) is fixedly connected to a drainage main pipe (11), and the other end of the drainage main pipe (11) is fixedly connected to a plurality of drainage branch pipes (13), and the other ends of the plurality of drainage branch pipes (13) are respectively connected to the water inlets (61) of the plurality of serpentine pipes (6); the top of the water tank (7) is fixedly connected to a return water main pipe (12), and the other end of the return water main pipe (12) is fixedly connected to a plurality of return water branch pipes (14), and the other ends of the plurality of return water branch pipes (14) are respectively connected to the water outlets (62) of the plurality of serpentine pipes (6).

5. A battery pack structure with good heat dissipation according to claim 4, characterized in that: The surfaces of the water inlet (61) and the water outlet (62) of the serpentine tube (6) are both provided with threads, and the surfaces of the drainage branch pipe (13) and the return branch pipe (14) close to one end of the cooling plate (4) are slidably connected with an internal threaded cap (15), and the internal threaded cap (15) can be screwed onto the surface of the water inlet (61) or the water outlet (62).

6. A battery pack structure with good heat dissipation according to claim 5, characterized in that: An annular sliding groove (16) is provided on the inner side wall of the internal thread cap (15); a limiting ring (17) is fixed on the surface of the drainage branch pipe (13) and the return branch pipe (14) close to one end of the internal thread cap (15); the limiting ring (17) is located inside the sliding groove (16) and is slidably connected to the sliding groove (16).

7. A battery pack structure with good heat dissipation according to claim 1, characterized in that: Two vertical limiting ridges (18) are fixed on both sides of the inner wall of the shell (1), and the limiting ridges (18) are in contact with the sides of the plurality of cooling plates (4).

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