New energy automobile battery insulation cooling fin

Abstract

The utility model discloses a new energy automobile battery insulation cooling fin which comprises a shell, a cover plate and a cooling liquid pipe, a battery pack is placed on the inner wall of the shell, a soaking piece is arranged between the battery pack and the shell, the cover plate is connected with the shell, a plurality of heat conduction square pipes are arranged on the lower surface of the shell, division bars are arranged in the heat conduction square pipes in an inclined mode, and the cooling liquid pipe is connected with the cover plate. The sealing covers are installed at the two ends of the heat conduction square pipe, the water inlet heads and the water drainage heads are arranged on the surfaces of the sealing covers and are distributed in a staggered mode, the cooling liquid pipes are communicated with the corresponding water inlet heads and the water drainage heads, cooling liquid is provided for the heat conduction square pipe through the cooling liquid pipes, and the cooling liquid in the heat conduction square pipe can circularly flow. And the cooling liquid in the heat conduction square pipe has two flowing directions, and when the cooling liquid flows, the battery packs at the two ends of the heat conduction square pipe can be cooled by the low-temperature cooling liquid, so that the cooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, in particular to an insulating heat sink for a new energy vehicle battery. Background Art

[0002] New energy vehicle batteries have large operating currents and generate a lot of heat. At the same time, the battery pack is in a relatively closed environment, which will cause the battery temperature to rise, affecting the battery life and even creating safety hazards, so the battery needs to be cooled.

[0003] In the related technology, a solution for an insulating heat sink for new energy vehicle batteries (Announcement No. CN219677374U) was found through searching. The metal tube in the silicone shell can be connected to an external water cooling device, and the heat in the battery pack is absorbed through circulating liquid. Its own copper material can also achieve a good heat dissipation effect.

[0004] However, the above solution uses metal tubes to dissipate heat. When the liquid flows inside the metal tubes to dissipate heat, the low-temperature liquid provided by the water cooling equipment exchanges heat with the metal tubes as soon as it enters the metal tubes. At this time, the temperature of the liquid begins to rise, and the flow path of the liquid along the curved metal tubes becomes longer, and the temperature of the liquid is higher. At this time, the heat dissipation effect on the battery will be reduced, and there is a problem of uneven battery heat dissipation. Utility Model Content

[0005] The purpose of the utility model is to provide an insulating heat sink for a new energy vehicle battery to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: an insulating heat sink for a new energy vehicle battery, comprising a shell, a battery pack is placed on the inner wall of the shell, a heat spreader is provided between the battery pack and the shell, the heat spreader is used to conduct heat and dissipate heat for the battery pack, and also plays an insulating role to prevent the battery pack from leaking electricity;

[0007] A cover plate, the cover plate is connected to the shell, a plurality of heat-conducting square tubes are arranged on the lower surface of the shell, a partition bar is arranged inside the heat-conducting square tube, and the partition bar is arranged obliquely, a cover is installed at both ends of the heat-conducting square tube, a water inlet head and a water outlet head are arranged on the surface of the cover, and the water inlet head and the water outlet head are staggered;

[0008] The inside of the heat-conducting square tube is divided into two channels, so that the coolant can flow in opposite directions. Using multiple heat-conducting square tubes can shorten the distance the coolant flows and make the heat dissipation of the battery pack more uniform.

[0009] A plurality of cooling liquid pipes are provided, and the cooling liquid pipes are connected to corresponding water inlet heads and water outlet heads, so that the water cooling equipment can circulate the cooling liquid in the heat-conducting square tube through the cooling liquid pipes to realize circulating heat dissipation of the battery pack.

[0010] Furthermore, a second thermally conductive silicone sheet is provided between the heat spreader and the battery pack, a first thermally conductive silicone sheet is provided on the lower surface of the thermally conductive square tube, and the first thermally conductive silicone sheet is bonded to the battery pack. The first thermally conductive silicone sheet and the second thermally conductive silicone sheet are soft and can fit tightly to the battery pack when squeezed by the battery pack, thereby improving the thermal conductivity effect.

[0011] Furthermore, a partition box is provided on the upper part of the interior of the shell, and the management circuit board of the battery pack is placed inside the partition box and separated from the battery pack, which can protect the electrical components on the circuit board and prevent performance degradation or burning.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The cooling liquid pipe provides cooling liquid to the heat-conducting square tube, and the cooling liquid in the heat-conducting square tube can circulate to maintain a low temperature and dissipate heat to the battery pack. The cooling liquid in the heat-conducting square tube has two flow directions. When the cooling liquid flows, the battery packs at both ends of the heat-conducting square tube can be cooled by the low-temperature cooling liquid, thereby improving the heat dissipation efficiency.

[0014] (2) The multiple heat-conducting square tubes can shorten the path length of the coolant flow, so that the coolant can return to the water cooling equipment faster to dissipate heat, allowing the coolant to cool down quickly and speed up the coolant circulation. This can achieve more efficient heat exchange for the battery pack and faster heat dissipation efficiency for the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the connection between the housing and the cover plate of the utility model;

[0016] Figure 2 It is a cross-sectional view of the housing of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the heat-conducting square tube and the spacer connected to the utility model;

[0018] Figure 4 It is a structural schematic diagram of the distribution of the water inlet head and the water discharge head of the utility model.

[0019] In the figure: 1. outer shell; 2. cover plate; 3. coolant pipe; 4. joint; 5. heat spreader; 6. second thermal conductive silicone sheet; 7. battery pack; 8. thermal insulation cotton; 9. aluminum foil; 10. thermal conductive square tube; 11. first thermal conductive silicone sheet; 12. spacer; 13. cover; 14. water inlet head; 15. drainage head; 16. partition box. 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 in 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] Example:

[0022] See also Figure 1-4 The utility model provides a technical solution: an insulating heat sink for a new energy vehicle battery, comprising a shell 1, a battery pack 7 is placed on the inner wall of the shell 1, a heat spreader 5 is arranged between the battery pack 7 and the shell 1, and the heat spreader 5 transfers heat evenly to the shell 1, and the shell 1 plays a role of passive heat dissipation for the battery pack 7;

[0023] A cover plate 2, the cover plate 2 is connected to the outer shell 1, a plurality of heat-conducting square tubes 10 are arranged on the lower surface of the outer shell 1, a spacer 12 is arranged inside the heat-conducting square tube 10, and the spacer 12 is arranged obliquely, and a cover 13 is installed at both ends of the heat-conducting square tube 10, and a water inlet head 14 and a water discharge head 15 are arranged on the surface of the cover 13, and the water inlet head 14 and the water discharge head 15 are staggered;

[0024] The size of the water inlet head 14 is smaller than the water outlet head 15. After the water inlet head 14 delivers the coolant to the inside of the heat-conducting square tube 10, the flow space becomes larger, which helps to speed up the flow speed of the coolant.

[0025] A plurality of cooling liquid pipes 3 are provided, and the cooling liquid pipes 3 are connected to the corresponding water inlet heads 14 and water outlet heads 15. The cooling liquid pipes 3 are connected to a water cooling device, and a pump of the water cooling device is used to make the cooling liquid flow to achieve circulating heat dissipation.

[0026] In this embodiment, if Figure 2 As shown, a second thermally conductive silicone sheet 6 is provided between the heat spreader 5 and the battery pack 7. The second thermally conductive silicone sheet 6 can be in close contact with the battery pack 7, thereby reducing the gap between the battery pack 7 and the second thermally conductive silicone sheet 6, improving the efficiency of heat conduction from the battery pack 7 to the second thermally conductive silicone sheet 6, and using the shell 1 to dissipate heat from the battery pack 7.

[0027] In this embodiment, if Figure 2 As shown, the upper surface of the cover plate 2 is provided with heat insulating cotton 8, and the surface of the heat insulating cotton 8 is provided with aluminum foil 9. When the battery is installed on the vehicle, the heat insulating cotton 8 can prevent heat from being transferred to the vehicle body and will not affect the temperature inside the vehicle.

[0028] In this embodiment, if Figure 1 and Figure 4 As shown, two joints 4 are provided on the surface of the coolant pipe 3. The use of the two joints 4 can speed up the speed at which the coolant enters the coolant pipe 3, ensuring that the coolant pipe 3 can provide sufficient coolant for the heat-conducting square tube 10, thereby improving the heat exchange capacity of the heat-conducting square tube 10.

[0029] In this embodiment, if Figure 2 As shown, a first thermally conductive silicone sheet 11 is provided on the lower surface of the thermally conductive square tube 10, and the first thermally conductive silicone sheet 11 is in contact with the battery pack 7. The first thermally conductive silicone sheet 11 fills the gap between the thermally conductive square tube 10 and the battery pack 7, which helps to accelerate the heat transfer of the battery pack 7 to the thermally conductive square tube 10. The first thermally conductive silicone sheet 11 and the second thermally conductive silicone sheet 6 have an insulating effect to prevent the battery pack 7 from directly contacting the outer shell 1 and the cover plate 2.

[0030] In this embodiment, if Figure 2 As shown, a partition box 16 is provided on the upper part of the housing 1, and a separate storage space is provided for the circuit board for controlling the battery pack 7. The battery pack 7 generates heat during operation, especially during high load or fast charging. If the management circuit board is in close contact with the battery pack 7, it may be affected by the high temperature environment, causing the performance of the components on the circuit board to degrade or be damaged. Therefore, isolating the management circuit board from the battery pack 7 can reduce the impact of heat to a certain extent and ensure that the circuit board and the components on it work within a suitable temperature range.

[0031] Specifically, when in use, the connector 4 for coolant inlet is connected to the pump of the water cooling device, and the connector 4 for coolant outlet is connected to the heat exchanger of the water cooling device. The coolant enters the coolant pipe 3 through the connector 4, and the coolant pipe 3 sends the coolant into the heat-conducting square pipe 10 through the water inlet head 14. Figure 3 As shown, the coolant enters the heat-conducting square tube 10 through both ends of the heat-conducting square tube 10. When the heat of the battery pack 7 is transferred to the heat-conducting square tube 10, the coolant exchanges heat with the heat-conducting square tube 10 to cool the heat-conducting square tube 10, thereby achieving heat dissipation of the battery pack 7.

[0032] The cooling liquid enters both ends of the heat-conducting square tube 10 at the same time, which has higher heat dissipation efficiency than the traditional solution of unidirectional cooling liquid entry. For example, the traditional solution takes the cooling liquid entering from the left and exiting from the right. The cooling liquid temperature at the left end is low and the cooling effect is good, while the cooling liquid temperature flowing to the right end has increased and the cooling effect is reduced. The cooling liquid enters both ends of the heat-conducting square tube 10, which can maintain a uniform and efficient heat dissipation effect.

[0033] 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 vehicle battery insulation heat sink, characterized in that: include: A housing (1), a battery pack (7) being placed on the inner wall of the housing (1), and a heat spreader (5) being provided between the battery pack (7) and the housing (1); A cover plate (2), the cover plate (2) being connected to the outer shell (1), a plurality of heat-conducting square tubes (10) being arranged on the lower surface of the outer shell (1), a spacer bar (12) being arranged inside the heat-conducting square tube (10), and the spacer bar (12) being arranged in an inclined manner, a cover (13) being installed at both ends of the heat-conducting square tube (10), a water inlet head (14) and a water outlet head (15) being arranged on the surface of the cover (13), and the water inlet head (14) and the water outlet head (15) being arranged in a staggered manner; A cooling liquid pipe (3), wherein a plurality of cooling liquid pipes (3) are provided, and the cooling liquid pipes (3) are connected to corresponding water inlet heads (14) and water discharge heads (15).

2. The insulating heat sink for new energy vehicle battery according to claim 1, characterized in that: A second heat-conducting silicone sheet (6) is provided between the heat spreader (5) and the battery pack (7).

3. The insulating heat sink for new energy vehicle battery according to claim 1, characterized in that: The upper surface of the cover plate (2) is provided with heat insulation cotton (8), and the surface of the heat insulation cotton (8) is provided with aluminum foil (9).

4. The insulating heat sink for new energy vehicle battery according to claim 1, characterized in that: Two joints (4) are provided on the surface of the coolant pipe (3).

5. The insulating heat sink for new energy vehicle battery according to claim 1, characterized in that: A first thermally conductive silicone sheet (11) is provided on the lower surface of the thermally conductive square tube (10), and the first thermally conductive silicone sheet (11) is bonded to the battery pack (7).

6. The insulating heat sink for new energy vehicle battery according to claim 1, characterized in that: A partition box (16) is provided on the upper part of the interior of the shell (1).

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