New energy vehicle
By setting up a shared thermal management system between the IPU and the second battery pack, the problem of poor power supply effect of small batteries to low-voltage equipment in new energy vehicles is solved, and effective temperature management and space utilization are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NIO TECH ANHUI CO LTD
- Filing Date
- 2025-03-20
- Publication Date
- 2026-05-08
AI Technical Summary
The small batteries in new energy vehicles have poor power supply performance for low-voltage equipment, and the lack of effective temperature management affects their performance.
A shared thermal management system, including flow channels and thermally conductive materials, is set between the IPU and the second battery pack to manage the thermal of the second battery pack, avoiding the waste of space due to the redundant configuration of the thermal management system.
It improves the power supply performance of small battery packs to low-voltage systems, ensures effective temperature management, and avoids unnecessary space waste.
Smart Images
Figure CN224217557U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical devices, specifically providing a new energy vehicle. Background Technology
[0002] In the field of new energy vehicles, these vehicles not only require large battery packs to provide the main power and meet certain driving range requirements, but also smaller battery packs to power low-voltage equipment. Since battery capacity, charge / discharge performance, and lifespan are all affected by temperature, and the larger the battery pack, the greater the temperature impact, large battery packs are typically equipped with thermal management systems to control temperature. While smaller batteries also have temperature control requirements, they are less stringent. Currently, new energy vehicles generally do not equip smaller batteries with thermal management systems, resulting in their capacity, charge / discharge performance, and lifespan being negatively affected by temperature, leading to poor power supply performance to low-voltage equipment. Utility Model Content
[0003] To address the problem of poor power supply performance of small batteries to low-voltage equipment in existing technologies, this invention provides a new energy vehicle. The vehicle includes a vehicle body, an IPU (Integrated Power Supply Unit), a first battery pack, and a second battery pack. The IPU is mounted on the vehicle body. The first battery pack supplies power to the high-voltage system of the vehicle body, and the second battery pack supplies power to the low-voltage system of the vehicle body. The second battery pack is located on top of the IPU, and a thermal management system is located on top of the IPU, situated between the IPU and the second battery pack.
[0004] Because the IPU requires heat dissipation, it is equipped with a thermal management system. By placing the IPU's thermal management system between the IPU and the second battery pack, the two can share the same system. This allows for better thermal management of the second battery pack, enabling it to supply power to the low-voltage system more efficiently, while avoiding the waste of space caused by having a separate thermal management system.
[0005] In an optional technical solution of this utility model, the above-mentioned thermal management system includes a flow channel.
[0006] In an optional technical solution of this utility model, the flow channel is U-shaped.
[0007] In an optional technical solution of this utility model, the above-mentioned thermal management system is a cold plate disposed above the above-mentioned IPU, or the above-mentioned flow channel is formed in the housing above the above-mentioned IPU.
[0008] In an optional technical solution of this utility model, a recessed structure is provided at the bottom of the second battery pack, and a thermally conductive material is provided between the recessed structure and the thermal management system.
[0009] In the optional technical solution of this utility model, the thermal conductivity λ of the thermally conductive material satisfies: 0.2W / (m·K)≤λ≤5W / (m·K).
[0010] In the optional technical solutions of this utility model, the thermally conductive material includes at least one of silicone, epoxy resin adhesive, polyurethane adhesive, silicone pad, and silicone-free thermally conductive pad.
[0011] In an optional technical solution of this utility model, the aforementioned thermally conductive material includes being extruded between the aforementioned IPU and the aforementioned second battery pack, and / or the aforementioned thermally conductive material is bonded to the aforementioned IPU and the aforementioned second battery pack.
[0012] In the optional technical solution of this utility model, the depth H of the above-mentioned recessed structure satisfies: 0.5mm≤H≤5mm.
[0013] In an optional technical solution of this utility model, the second battery pack includes mounting feet, and a fixing post is provided on the housing of the IPU, with the mounting feet connected to the fixing post. Attached Figure Description
[0014] Figure 1 This is a schematic diagram showing the second battery not installed on the IPU.
[0015] Figure 2 A schematic diagram showing the second battery being installed on the IPU;
[0016] Figure 3 To illustrate the IPU diagram of the thermal management system;
[0017] Figure 4 A bottom view of the second battery;
[0018] Figure 5 A schematic diagram of an IPU equipped with thermally conductive material.
[0019] Figure Labels
[0020] IPU100;
[0021] Secure 110;
[0022] Second battery pack 200;
[0023] Mounting foot 210;
[0024] Thermal Management System 300;
[0025] Flow channel 310, inlet 320, outlet 330;
[0026] Thermally conductive material 400. Detailed Implementation
[0027] The following describes optional embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0028] In the description of this utility model, it should be understood that the terms "distance", "width", "thickness", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly defined.
[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] To address the problem of poor power supply performance of small batteries for low-voltage equipment in existing technologies, such as... Figures 1 to 5As shown, this utility model provides a new energy vehicle, which includes a vehicle body, an IPU (Integrated Power Unit) 100, a first battery pack, and a second battery pack 200. The IPU 100 is mounted on the vehicle body. The first battery pack supplies power to the high-voltage system of the vehicle body, and the second battery pack 200 supplies power to the low-voltage system of the vehicle body. The second battery pack 200 is located on top of the IPU 100, and a thermal management system 300 is located on top of the IPU 100, between the IPU 100 and the second battery pack 200. The IPU 100 is equipped with a thermal management system 300 because it dissipates heat. By placing the thermal management system 300 between the IPU 100 and the second battery pack 200, the IPU 100 and the second battery pack 200 can share the same thermal management system. This allows for better thermal management of the second battery pack 200 to supply power to the low-voltage system, while avoiding the space waste caused by a separate thermal management system. The second battery pack 200 has mounting feet 210 on its outer casing, and the IPU100 has a fixing post 110 on its top. The second battery pack 200 is installed on the top of the IPU100 by connecting the mounting feet 210 and the fixing post 110.
[0032] In optional embodiments of this utility model, such as Figure 3 As shown, the thermal management system 300 includes a flow channel 310, which is U-shaped. The thermal management system 300 also includes an inlet 320 and an outlet 330, which are respectively connected to the two ends of the flow channel 310. The thermal management system 300 contains coolant. After the coolant enters the flow channel 310 through the inlet 320, it exchanges heat with the IPU 100 and the second battery pack 200 simultaneously. After heat exchange, the coolant flows out through the outlet 330. In this embodiment, the flow channel 310 is U-shaped. It is understood that the flow channel 310 can also be S-shaped, spiral-shaped, etc., all within the protection scope of this utility model. Optionally, the thermal management system 300 can be an independent cold plate disposed above the IPU 100, or the flow channel 310 can be directly formed within the wall of the housing above the IPU 100. If the flow channel 310 is directly formed within the wall of the housing above the IPU 100, space can be saved.
[0033] In optional embodiments of this utility model, such as Figure 4 and Figure 5As shown, a recessed structure 220 is provided at the bottom of the second battery pack 200, and a thermally conductive material 400 is disposed between the recessed structure 220 and the thermal management system 300. Optionally, the depth H of the recessed structure 220 satisfies: 0.5mm ≤ H ≤ 5mm. Specifically, H can be 0.5mm, 1mm, 2mm, 3mm, 4mm, or 5mm. The thermally conductive material has a certain thickness and requires a certain height space. The recessed structure 220 at the bottom of the second battery pack 200 can be used to accommodate the thermally conductive material 400. However, if the value of H is too large, the weight of the second battery pack 200's casing will be too large, resulting in high thermal resistance and limited heat dissipation. If the value of H is too small, friction noise may occur due to tolerance or flatness differences. Setting the value of H within the above range makes it easier for the second battery pack 200 to be installed on the top of the IPU100's casing and can better balance heat dissipation. Optionally, the thermal conductivity λ of the thermally conductive material 400 satisfies: 0.2 W / (m·K) ≤ λ ≤ 5 W / (m·K). Optionally, the thermally conductive material 400 includes at least one of silicone rubber, epoxy resin adhesive, polyurethane adhesive, silicone pad, and silicone-free thermally conductive pad. Optionally, the thermally conductive material 400 may be extruded between the IPU 100 and the second battery pack 200, and / or the thermally conductive material 400 may be bonded to the IPU 100 and the second battery pack 200.
[0034] The technical solution of this utility model has been described in conjunction with the optional embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A new energy vehicle, characterized in that, The new energy vehicles include Vehicle body; IPU, which is mounted on the vehicle body; The first battery pack is used to supply power to the high-voltage system of the vehicle body; The second battery pack is used to supply power to the low-voltage system of the vehicle body; The second battery pack is disposed on top of the IPU, and a thermal management system is disposed on top of the IPU, the thermal management system being located between the IPU and the second battery pack.
2. The new energy vehicle as described in claim 1, characterized in that, The thermal management system includes flow channels.
3. The new energy vehicle as described in claim 2, characterized in that, The flow channel is U-shaped.
4. The new energy vehicle as described in claim 2, characterized in that, The thermal management system is a cold plate disposed above the IPU, or the flow channel is formed in the housing above the IPU.
5. The new energy vehicle as described in claim 1, characterized in that, The bottom of the second battery pack is provided with a recessed structure, and a thermally conductive material is disposed between the recessed structure and the thermal management system.
6. The new energy vehicle as described in claim 5, characterized in that, The thermal conductivity λ of the thermally conductive material satisfies: 0.2W / (m·K)≤λ≤5W / (m·K).
7. The new energy vehicle as described in claim 6, characterized in that, The thermally conductive material includes at least one of silicone, epoxy resin, polyurethane, silicone pad, and silicone-free thermal pad.
8. The new energy vehicle as described in claim 6, characterized in that, The thermally conductive material is pressed between the IPU and the second battery pack, and / or the thermally conductive material is bonded to the IPU and the second battery pack.
9. The new energy vehicle as described in claim 5, characterized in that, The depth H of the recessed structure satisfies: 0.5mm≤H≤5mm.
10. The new energy vehicle as described in claim 1, characterized in that, The second battery pack includes mounting feet, and a fixing post is provided on the housing of the IPU, with the mounting feet connected to the fixing post.