Temperature control box for battery thermal management

Abstract

The invention discloses a temperature control box for battery thermal management. The temperature control box for battery thermal management comprises a box body, a battery thermal management assembly and an air supply device, the box body comprises a first cavity, the outer wall of the first cavity forms a closed space, and an electrified part in the battery thermal management assembly is located in the first cavity; at least one ventilation hole is formed in the outer wall of the second cavity, the second cavity is connected with the first cavity, at least one part of non-electrified parts in the battery heat management assembly are located in the second cavity, and the at least one part of non-electrified parts comprise a heat dissipation device; the air supply device is installed on the outer wall of the second cavity. The temperature control box can ensure that the electrified part cannot be short-circuited due to water inflow, so that the waterproof performance of the temperature control box is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The present invention relates to the field of temperature control technology, and in particular to a temperature control box for battery thermal management. Background Art

[0002] A battery thermal management device is known that integrates high-pressure and low-pressure components used for battery thermal management, such as a fan, condenser, and compressor, into a single box to form a temperature-controlled box. To ensure ventilation, a plurality of ventilation holes are provided on the outer wall of the box. The fan is activated to drive air circulation, remove heat from the temperature-controlled box, and achieve temperature regulation (for example, refer to Chinese utility model patent CN218257642U).

[0003] However, since the temperature control box in the prior art has many ventilation holes on the outer wall of the box, water can easily enter the box through the ventilation holes, causing a short circuit in the high-voltage / low-voltage components in the box, posing a safety risk. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a temperature control box for battery thermal management to solve the technical problem of safety risks caused by the poor waterproof performance of the temperature control box itself.

[0005] To achieve the above objectives, an embodiment of the present invention provides a temperature control box for battery thermal management, the temperature control box comprising a box body, a battery thermal management component, and an air supply device, the box body comprising:

[0006] a first chamber, wherein the outer wall of the first chamber forms a closed space, and the charged components of the battery thermal management assembly are located in the first chamber;

[0007] a second chamber, wherein at least one ventilation hole is formed on an outer wall of the second chamber, the second chamber is connected to the first chamber, at least a portion of non-charged components of the battery thermal management assembly is located in the second chamber, and the at least a portion of the non-charged components includes a heat dissipation device;

[0008] Wherein, the air supply device is installed on the outer wall of the second chamber. When the air supply device is started, the air in the second chamber is discharged from the second chamber through the air supply device, and at the same time, the air outside the second chamber enters the second chamber through the at least one ventilation hole.

[0009] Optionally, the at least part of the non-electrical components further includes a heat exchanger.

[0010] Optionally, the live components include a compressor, a heater, a water pump, and a controller.

[0011] Optionally, the outer wall of the first chamber includes a bottom shell, a side wall and a top cover, the bottom shell has a first hollow layer, the top of the side wall has a second hollow layer, the bottom of the side wall has a third hollow layer, and the second hollow layer and the third hollow layer are respectively arranged on two opposite surfaces of the side wall.

[0012] Optionally, a bracket for mounting the temperature control box on a vehicle body is further included, and the lower plate of the first hollow layer is fixedly connected to the bracket by bolts.

[0013] Optionally, the outer wall of the first chamber includes an integrally formed upper shell and an integrally formed lower shell, and the upper shell and the lower shell are sealed and connected.

[0014] Optionally, the edge of the upper shell extends outward to form an upper joint surface, and the edge of the lower shell extends outward to form a lower joint surface, and the upper joint surface and the lower joint surface are sealed.

[0015] Optionally, both the upper joint surface and the lower joint surface are inclined.

[0016] Optionally, two opposite outer surfaces of the lower shell are provided with fixing platforms, and the fixing platforms are used to mount the temperature control box on a vehicle body.

[0017] Optionally, the top of the upper shell facing the side of the second chamber is inclined inwardly, and the bottom is inclined outwardly.

[0018] In an embodiment of the present invention, the box body is divided into a sealed first chamber and a non-sealed second chamber, and the charged components of the battery thermal management assembly are installed in the first chamber, which can ensure that the charged components will not be short-circuited due to water ingress, thereby improving the waterproof performance of the temperature control box itself and reducing safety risks; in addition, at least a portion of the non-charged components of the battery thermal management assembly are installed in the second chamber, and the temperature control box is cooled by an air supply device installed on the outer wall of the second chamber, which can ensure that the heat dissipation effect of the temperature control box is not affected.

[0019] The further effects of the above-mentioned non-conventional optional manner will be described below in conjunction with specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0021] Figure 1Schematic diagram of the connection of the temperature control box, battery pack, and liquid storage tank for battery thermal management according to an embodiment of the present invention;

[0022] Figure 2 Exploded view of the box body according to the first embodiment of the present invention;

[0023] Figure 3 Cross-sectional view of the outer wall of the first chamber according to the first embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the structure at the connection between the side wall and the top cover of the first chamber according to the first embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the structure at the connection between the bottom shell and the bracket of the first chamber according to the first embodiment of the present invention;

[0026] Figure 6 Exploded view of the box body according to the second embodiment of the present invention;

[0027] Figure 7 Side view of the box body according to the second embodiment of the present invention.

[0028] Reference numerals are as follows:

[0029] 100 - Temperature control box for battery thermal management;

[0030] 101 - Water pump;

[0031] 102 - Heat exchanger;

[0032] 103 - Heater;

[0033] 104 - Compressor;

[0034] 105 - Heat dissipation device;

[0035] 106 - Air supply device;

[0036] 107 - Controller;

[0037] 200 - Battery pack;

[0038] 300 - Liquid storage tank;

[0039] 11 - Bottom shell;

[0040] 12 - Side wall;

[0041] 13 - Top cover;

[0042] 14 - First hollow layer;

[0043] 15 - Second hollow layer;

[0044] 16 - Third hollow layer;

[0045] 17-bolt;

[0046] 21-upper housing;

[0047] 22-lower housing;

[0048] 23- upper joint surface;

[0049] 24-lower joint surface;

[0050] 25-fixed platform;

[0051] 26-side of the upper shell;

[0052] 31- bottom plate;

[0053] 32-top plate;

[0054] 33-side panels;

[0055] 34-air supply plate;

[0056] 35-ventilation holes;

[0057] 36-Mounting holes. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0060] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0061] An embodiment of the present invention provides a temperature control box for battery thermal management. The temperature control box includes a box body, a battery thermal management component, and a air supply device. The box body includes a first chamber and a second chamber. The outer wall of the first chamber forms a sealed space, and the charged components in the battery thermal management component are located in the first chamber. At least one ventilation hole is provided on the outer wall of the second chamber, and the second chamber is connected to the first chamber. At least a part of the non-charged components in the battery thermal management component are located in the second chamber, wherein at least a part of the non-charged components includes a heat dissipation device; the air supply device is installed on the outer wall of the second chamber. When the air supply device is started, the air in the second chamber is discharged from the second chamber through the air supply device, and at the same time, the air outside the second chamber enters the second chamber through at least one ventilation hole.

[0062] In the embodiment of the present invention, the box body is divided into a sealed first chamber and an unsealed second chamber, and the charged components in the battery thermal management component are installed in the first chamber, which can ensure that the charged components will not be short-circuited due to water ingress, thereby improving the waterproof performance of the temperature control box itself and reducing the safety risk; in addition, at least a part of the non-charged components in the battery thermal management component are installed in the second chamber, and the temperature control box is cooled by the air supply device installed on the outer wall of the second chamber, so that the heat dissipation effect of the temperature control box can be ensured not to be affected.

[0063] It should be noted that the non-charged components other than the heat dissipation device can be installed in the first chamber or in the second chamber; alternatively, a part of the non-charged components other than the heat dissipation device can be installed in the first chamber and the other part can be installed in the second chamber. The embodiment of the present invention does not limit this. Installing the non-charged components in the second chamber can minimize the volume of the first chamber and increase the volume of the second chamber at the same time, which is beneficial to improving the heat dissipation effect of the temperature control box.

[0064] Such as Figure 1As shown, in some embodiments of the present invention, the battery thermal management component 100 of the temperature control box includes a water pump 101, a heat exchanger 102, a heater 103, a compressor 104, a heat dissipation device 105, an air supply device 106 and a controller 107. The water pump 101 pumps the water in the liquid storage tank 300 into the heat exchanger 102. The high-temperature water and the low-temperature refrigerant perform heat exchange in the heat exchanger 102. The water after heat exchange enters the liquid storage tank 300 again. The water in the liquid storage tank 300 cools the battery pack 200, so that the battery pack 200 The temperature of the battery pack 200 decreases. Simultaneously, the refrigerant that has undergone heat exchange enters the heat sink 105 through the compressor 104. The air in the second chamber is discharged from the second chamber via the air supply device 106 (e.g., a fan). Simultaneously, air outside the second chamber enters the second chamber through at least one vent, allowing the heat sink 105 to exchange heat with the outside air, thereby dissipating heat from the heat sink 105 and cooling the refrigerant. Furthermore, when the heater 103 (e.g., a ceramic heater) is activated, it heats the battery pack 200, increasing its temperature. The controller 107 controls the temperature control box to increase or decrease the temperature of the battery pack 200 based on the detected temperature of the battery pack 200. The heat sink 105 may be a condenser.

[0065] Optionally, live components such as the compressor 104, heater 103, water pump 101, and controller 107 can be installed in the first chamber. This ensures that the live components will not short-circuit due to water ingress, thereby improving the temperature control box's own waterproof performance and reducing safety risks. Optionally, at least a portion of non-live components such as the heat sink 105 can be installed in the second chamber, and the heat sink 105 can be cooled by an air supply device installed on the outer wall of the second chamber. This ensures that the heat dissipation effect of the temperature control box is not affected. It should be noted that the heat exchanger 102 (non-live component) can be installed in the first chamber or in the second chamber.

[0066] In some embodiments of the present invention, the heat exchanger 102 is installed in the second chamber with the aim of reducing the volume of the first chamber as much as possible while increasing the volume of the second chamber. Increasing the volume of the second chamber is beneficial to improving the heat dissipation effect of the temperature control box, thereby increasing the cooling speed of the temperature control box on the battery pack 200.

[0067] Optionally, the outer wall of the first chamber is generally made of metal material, such as extruded aluminum profile or cast aluminum. Optionally, the outer wall of the second chamber can be made of non-metallic material or metal material.

[0068] like Figure 2As shown, in some embodiments of the present invention, the outer wall of the first chamber includes a bottom case 11, side walls 12, and a top cover 13. Among them, the bottom case 11, the bottoms of the four side walls 12, and between the four side walls 12 are sealed and fixed by welding, and the top cover 13 and the tops of the four side walls 12 are sealed and fixed by sealant, thereby enclosing a closed first chamber. In this embodiment, as Figures 3-4 shown, the bottom case 11 has a first hollow layer 14. Since the bottom case 11 is the main supporting component, using a hollow structure can improve the overall supporting capacity of the box body; the top of the side wall 12 has a second hollow layer 15, and the bottom of the side wall 12 has a third hollow layer 16. The second hollow layer 15 and the third hollow layer 16 are respectively arranged on two opposite surfaces of the side wall 12. Arranging a hollow structure at the bottom of the side wall 12 not only helps to fixedly connect the bottom of the side wall 12 to the bottom case 11, but also can improve the overall supporting capacity of the box body. Arranging a hollow structure at the top of the side wall 12 is to facilitate sealing and fixing the top cover 13 and the side wall 12 with sealant.

[0069] Optionally, the temperature control box further includes a bracket for mounting the temperature control box on the vehicle body. As Figure 5 shown, the lower layer plate of the first hollow layer 14 is fixedly connected to the bracket by bolts 17. To ensure the airtightness of the first chamber, the lower layer plate of the first hollow layer 14 is fixedly connected to the bracket. In this way, not only can the temperature control box be firmly fixed to the vehicle body, but also the airtightness of the first chamber will not be damaged.

[0070] As Figure 6 shown, in some other embodiments of the present invention, the outer wall of the first chamber includes an integrally formed upper housing 21 and an integrally formed lower housing 22. The upper housing 21 and the lower housing 22 are sealed and connected. For example, the upper housing 21 and the lower housing 22 can be connected by bolts and sealant, thereby forming a closed first chamber. Using the integrally formed upper housing 21 and the integrally formed lower housing 22 to enclose a closed first chamber helps to quickly assemble the first chamber, thereby improving the overall assembly efficiency of the temperature control box.

[0071] Optionally, as Figures 6-7 shown, the edge of the upper housing 21 extends outward to form an upper joint surface 23, and the edge of the lower housing 22 extends outward to form a lower joint surface 24. The upper joint surface 23 and the lower joint surface 24 are sealed and connected. For example, the upper joint surface 23 and the lower joint surface 24 are connected by bolts and sealant, thereby forming a closed first chamber. Designing the upper joint surface 23 and the lower joint surface 24 helps to increase the contact area between the upper housing 21 and the lower housing 22, thereby improving the connection firmness and airtight effect between the upper housing 21 and the lower housing 22.

[0072] Optionally, as Figures 6-7As shown, both the upper and lower joint surfaces 23 and 24 are inclined, facilitating easy installation of the battery thermal management assembly within the first chamber. For example, the lower housing 22 closer to the second chamber is higher than the lower housing 22 farther from the second chamber. Optionally, mounting platforms 25 are provided on two opposing outer surfaces of the lower housing 22 to securely attach the temperature control box to the vehicle body. Positioning the mounting platforms 25 on the outer surfaces of the lower housing 22 not only secures the temperature control box to the vehicle body but also prevents the airtightness of the first chamber from being compromised.

[0073] In some embodiments of the present invention, Figure 7 As shown, the top of the side wall 26 of the upper shell 21 toward the second chamber is tilted inward and the bottom is tilted outward, which can increase the air intake of the second chamber, help improve the heat exchange efficiency between the heat dissipation device 105 and the outside air, and thus increase the cooling speed of the temperature control box on the battery pack 200.

[0074] like Figure 2 and Figure 6 As shown, the outer wall of the second chamber includes a bottom plate 31, a top plate 32, side plates 33, and an air supply plate 34. The bottom plate 31 is fixedly connected to the two side plates 33 and the air supply plate 34, respectively. Correspondingly, the top plate 32 is also fixedly connected to the two side plates 33 and the air supply plate 34, respectively. The air supply plate 34 is arranged opposite to the first chamber. Furthermore, ventilation holes 35 are formed on the side plates 33, and mounting holes 36 are formed on the air supply plate 34. The air supply device is mounted in the mounting holes 36. Optionally, ventilation holes 35 can also be formed on the bottom plate 31 and the top plate 32. This can increase the air intake of the second chamber, thereby helping to improve the heat exchange efficiency between the heat sink 105 and the outside air. Optionally, the bottom plate 31 is fixedly connected to the outer wall of the first chamber.

[0075] It should be noted that the number of ventilation holes 35 can be multiple, and the ventilation holes 35 can be opened in rows on the side panel 33, the top panel 32 or the bottom panel 31, so that the air intake of the second chamber is increased, which helps to improve the heat exchange efficiency between the heat dissipation device 105 and the outside air.

[0076] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A temperature control box for battery thermal management, the temperature control box comprising a box body, a battery thermal management component and a air supply device, characterized in that, The box body includes: A first chamber, the outer wall of the first chamber forms a sealed space, and the charged components in the battery thermal management assembly are located in the first chamber; A second chamber, at least one ventilation hole is provided on the outer wall of the second chamber, the second chamber is connected to the first chamber, at least a part of the non-charged components in the battery thermal management assembly are located in the second chamber, and at least a part of the non-charged components includes a heat dissipation device; Wherein, the air supply device is installed on the outer wall of the second chamber. When the air supply device is started, the air in the second chamber is discharged from the second chamber through the air supply device, and at the same time, the air outside the second chamber enters the second chamber through the at least one ventilation hole.

2. The temperature control box for battery thermal management according to claim 1, wherein, At least a part of the non-charged components further includes a heat exchanger.

3. The temperature control box for battery thermal management according to claim 1, wherein The charged components include a compressor, a heater, a water pump, and a controller.

4. The temperature control box for battery thermal management according to claim 1, characterized in that, The outer wall of the first chamber includes a bottom shell, a side wall, and a top cover. The bottom shell has a first hollow layer, the top of the side wall has a second hollow layer, the bottom of the side wall has a third hollow layer, and the second hollow layer and the third hollow layer are respectively arranged on two opposite surfaces of the side wall.

5. The temperature control box for battery thermal management according to claim 4, wherein It further includes a bracket for mounting the temperature control box on the vehicle body, and the lower plate of the first hollow layer is fixedly connected to the bracket by bolts.

6. The temperature control box for battery thermal management according to claim 1, characterized in that, The outer wall of the first chamber includes an integrally formed upper shell and an integrally formed lower shell, and the upper shell and the lower shell are hermetically connected.

7. The temperature control box for battery thermal management according to claim 6, wherein, The edge of the upper shell extends outward to form an upper joint surface, the edge of the lower shell extends outward to form a lower joint surface, and the upper joint surface and the lower joint surface are hermetically connected.

8. The temperature control box for battery thermal management according to claim 7, characterized in that, Both the upper joint surface and the lower joint surface are inclined.

9. The temperature control box for battery thermal management according to claim 7, wherein, Fixing platforms are arranged on two opposite outer surfaces of the lower shell, and the fixing platforms are used for mounting the temperature control box on the vehicle body.

10. The temperature control box for battery thermal management according to claim 7, characterized in that, The top of the side surface of the upper shell facing the second chamber is inclined inward, and the bottom is inclined outward.

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