Battery PTC heating plate

Abstract

The utility model relates to the field of batteries, in particular to a battery PTC heating plate which comprises a base plate and a mounting plate, the mounting plate is arranged on the base plate, a heating groove is formed in the mounting plate, and the heating groove is used for mounting a PTC heating core. By using the battery PTC heating plate provided by the utility model, the battery can be preheated under the condition of cold weather, the battery can be ensured to play the best performance under the cold environment, the starting success rate is improved, in addition, the energy storage potential of the battery is played to the greatest extent, and the starting failure caused by over-low temperature is avoided. In addition, the battery PTC heating plate further comprises heat dissipation teeth, the heat dissipation teeth are arranged on the substrate, and the heat dissipation teeth and the mounting plate are arranged on the two opposite sides of the substrate respectively. According to the design, the heat dissipation teeth are arranged on one side of the substrate, so that the heat dissipation performance of the heating plate is further enhanced, a heat management system is optimized, overheating of the system is avoided, and the temperature of the whole battery heating system is kept stable.

Description

Technical Field

[0001] This application relates to the field of batteries, and more particularly to a battery PTC heating plate. Background Technology

[0002] The optimal operating temperature range for lithium-ion batteries used in pure electric vehicles is 35°C to 45°C. Within this temperature range, the battery's charge and discharge performance reaches its peak. However, when the temperature decreases, the performance of lithium-ion batteries is significantly affected, especially in low-temperature environments. Cold weather causes a substantial drop in the battery's discharge performance and charge acceptance. If a vehicle fails to start in winter, it is very likely due to excessively low battery temperature. Low temperatures significantly inhibit the efficiency of internal chemical reactions within the battery and increase its internal resistance. These two factors work together to cause the battery's starting power to decrease significantly as the temperature drops.

[0003] More importantly, according to statistics from the International Battery Society, the power required to start a car in winter increases by 40% to 70% compared to summer. This means that even at 0°C, a fully charged lithium battery will only provide about 40% of its starting power due to the low temperature. This applies to all batteries, regardless of whether they are brand new and in good condition. Therefore, preheating the battery is crucial to ensure optimal performance in cold environments. Preheating the battery not only improves the success rate of starting but also maximizes its energy storage potential, preventing starting failures due to excessively low temperatures. Summary of the Invention

[0004] This application provides a battery PTC heating plate to solve the problem of low start-up efficiency of electric vehicle batteries in low-temperature environments in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A battery PTC heating plate includes: a substrate and a mounting plate, the mounting plate being disposed on the substrate, and a heating groove being provided on the mounting plate for mounting a PTC heating element.

[0007] Preferably, the mounting plate is integrally connected to the substrate; the substrate has a first surface, the mounting plate has a second surface, and the distance between the mounting groove and the first surface is greater than the distance between the mounting groove and the second surface.

[0008] Preferably, the heating groove is arranged along the central axis of the mounting plate.

[0009] Preferably, the heating groove extends through the mounting plate, and both ends of the heating groove are connected to the outside world.

[0010] Preferably, the heating tank includes a first horizontal surface, a vertical surface, a transition surface, and a second horizontal surface that are connected in sequence. The first horizontal surface and the second horizontal surface are arranged in parallel, and the transition surface is arc-shaped.

[0011] Preferably, the mounting plate is provided with an arc-shaped groove corresponding to the transition surface.

[0012] Preferably, the transition surface includes a first arc surface with a radius of 2.3 mm and a second arc surface with a radius of 1 mm, and the vertical surface, the second arc surface, the first arc surface, the second arc surface and the second horizontal surface are connected in sequence.

[0013] Preferably, the arc groove includes a third arc surface with a radius of 1.5 mm and a fourth arc surface with a radius of 1 mm. The fourth arc surface, the third arc surface and the fourth arc surface are connected in sequence, and the first arc surface and the third arc surface are coaxially arranged.

[0014] Preferably, the second surface includes a third horizontal surface and a fourth horizontal surface, wherein the third horizontal surface, the fourth arc surface, the third arc surface, the fourth arc surface and the fourth horizontal surface are connected sequentially, and the distance between the third horizontal surface and the first surface is less than the distance between the fourth horizontal surface and the second surface.

[0015] Preferably, the device further includes heat dissipation teeth, which are disposed on the substrate and are disposed on opposite sides of the substrate, respectively.

[0016] Preferably, the area of ​​the heat dissipation fins corresponds to the area of ​​the mounting plate; the fins of the heat dissipation fins are solid.

[0017] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are:

[0018] This utility model discloses a battery PTC heating plate, comprising a substrate and a mounting plate. By installing a PTC heating element in a heating bath, the PTC heating element transfers heat to the mounting plate, which then conducts the heat to the battery in contact with it, thus heating the battery. In this way, heat can be quickly and evenly distributed across the battery surface via the mounting plate, avoiding localized overheating or uneven heating, and ensuring the battery achieves optimal operating temperature in cold environments. Using this battery PTC heating plate allows for preheating of the battery in cold weather, ensuring optimal battery performance in cold conditions, thereby improving the start-up success rate. Furthermore, it maximizes the battery's energy storage potential and avoids start-up failures due to excessively low temperatures. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a schematic diagram of a three-dimensional view of a battery PTC heating plate according to the present invention;

[0023] Figure 2 for Figure 1 An enlarged view of the structure shown at point A;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0025] Figure 4 for Figure 1 Right view of the structure shown;

[0026] Figure 5 for Figure 4 The enlarged view of the structure shown at point B.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Battery PTC heating plate; 2. Substrate; 3. Mounting plate; 4. Heating groove; 5. First surface; 6. Second surface; 7. First horizontal surface; 8. Vertical surface; 9. Second horizontal surface; 10. Transition surface; 11. Arc groove; 12. First arc surface; 13. Second arc surface; 14. Heat dissipation teeth; 15. Toothed plate; 16. Notch; 17. Third arc surface; 18. Fourth arc surface; 19. Third horizontal surface; 20. Fourth horizontal surface; 21. Mounting hole. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0031] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are used to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0032] To address the technical problem of low start-up efficiency of electric vehicle batteries in low-temperature environments in existing technologies, this application provides a battery PTC heating plate, such as... Figures 1-5 As shown, it includes a substrate 2 and a mounting plate 3. The mounting plate 3 is disposed on the substrate 2 and has a heating groove 4, which is used to mount the PTC heating element.

[0033] In use, the substrate 2 can be mounted on the battery base, allowing the mounting plate 3 to contact the battery. Specifically, mounting holes 1 are provided on the substrate 2, and a PTC heating element is installed in the heating groove 4. The PTC heating element transfers heat to the mounting plate 3, which then conducts the heat to the battery in contact with it, thus heating the battery. In this way, heat can be quickly and evenly distributed on the battery surface by the mounting plate 3, avoiding local overheating or uneven heating, and ensuring that the battery obtains the optimal operating temperature in cold environments.

[0034] By using the battery PTC heating plate of this embodiment, the battery can be preheated in cold weather to ensure that the battery can perform at its best in cold environments, thereby improving the start-up success rate. In addition, the battery's energy storage potential is maximized, and start-up failures caused by excessively low temperatures are avoided.

[0035] Furthermore, such as Figure 1 , Figure 3 As shown, the mounting plate 3 is integrally connected to the substrate 2. This integral connection improves the heat transfer effect of the heating plate product, enhancing both heating and heat dissipation. The substrate 2 has a first surface 5, and the mounting plate 3 has a second surface 6. The distance between the mounting groove and the first surface 5 is greater than the distance between the mounting groove and the second surface 6. Because the PTC heating element is closer to the battery, heat can be transferred more directly to the battery, reducing heat loss during conduction and thus improving heating efficiency.

[0036] Specifically, the heating groove 4 is arranged along the central axis of the mounting plate 3 to ensure that heat transfer is not biased to one side, thereby avoiding local overheating or uneven heating. Furthermore, the heating groove 4 penetrates the mounting plate 3, and both ends of the heating groove 4 are connected to the outside environment. Because the heating groove 4 is connected to the outside environment at both ends, heat can flow freely inside the heating groove 4, which not only improves heat transfer efficiency but also makes the temperature of the entire heating area more uniform. Especially in low-temperature environments, this design effectively prevents heat from accumulating in a certain area, ensuring uniform and rapid heating of the battery.

[0037] like Figure 5As shown, the heating groove 4 includes a first horizontal surface 7, a vertical surface 8, a transition surface 10, and a second horizontal surface 9 connected in sequence. The first horizontal surface 7 and the second horizontal surface 9 are arranged in parallel, and the transition surface 10 is arc-shaped. Furthermore, an arc-shaped groove 11 corresponding to the transition surface 10 is provided on the mounting plate 3. During long-term use, the PTC heating element may loosen due to vibration, thermal expansion, or temperature changes. Because the transition surface 10 is designed with an arc shape, it can smoothly distribute pressure, while the arc-shaped groove 11 further helps to disperse the contact force between the heating element and the groove wall.

[0038] Preferably, the transition surface 10 includes a first arc surface 12 with a radius of 2.3 mm and a second arc surface 13 with a radius of 1 mm, and the vertical surface 8, the second arc surface 13, the first arc surface 12, the second arc surface 13, and the second horizontal surface 9 are sequentially connected. By precisely selecting the arc radius, the heat conduction path of the heating groove 4 is further optimized. The combination of the first arc surface 12 and the second arc surface 13 not only makes the heat transfer in the heating system smoother, but also ensures that the heating core can uniformly fit against the inner wall of the heating groove 4 during thermal expansion or deformation. By optimizing the shape of the transition surface 10, the uneven heat distribution that may be caused by sharp angles is reduced, thereby improving the efficiency of the entire heating process and ensuring that heat can be transferred to the battery more evenly and quickly.

[0039] Specifically, the arc groove 11 includes a third arc surface 17 with a radius of 1.5 mm and a fourth arc surface 18 with a radius of 1 mm. The fourth arc surface 18, the third arc surface 17 and the fourth arc surface 18 are connected in sequence, and the first arc surface 12 is coaxially arranged with the third arc surface 17.

[0040] Through a well-designed arc shape, the transition surface 10 and the arc groove 11 effectively disperse the contact force between the heating element and the groove wall, resulting in more uniform stress distribution. During prolonged use, the deformation or expansion of the heating element is guided by the arc surface, preventing the heating element from loosening or shifting due to localized stress concentration, thus ensuring that the heating element always remains in the optimal working position.

[0041] Further, the second surface 6 includes a third horizontal surface 19 and a fourth horizontal surface 20, wherein the third horizontal surface 19, the fourth arc surface 18, the third arc surface 17, the fourth arc surface 18, and the fourth horizontal surface 20 are sequentially connected, and the distance between the third horizontal surface 19 and the first surface 5 is less than the distance between the fourth horizontal surface 20 and the second surface 6. Specifically, in this embodiment, the distance between the third horizontal surface 19 and the second surface 6 is 15mm, and the distance between the fourth horizontal surface 20 and the second surface 6 is 16mm.

[0042] Furthermore, the battery PTC heating plate also includes heat dissipation teeth 14, which are disposed on the substrate 2, and the heat dissipation teeth 14 and the mounting plate 3 are respectively disposed on opposite sides of the substrate 2. This design, by configuring heat dissipation teeth 14 on one side of the substrate 2, further enhances the heat dissipation performance of the heating plate and optimizes the thermal management system. The positional layout of the heat dissipation teeth 14 can effectively promote the timely dissipation of heat generated during the heating process to the external environment, avoiding system overheating and thus maintaining the temperature stability of the entire battery heating system.

[0043] Specifically, the area of ​​the heat dissipation fins 14 corresponds to the area of ​​the mounting plate 3, ensuring that the heat dissipation fins 14 can undertake the heat dissipation task commensurate with the heat generated by the heating system. This avoids the problem of heat accumulation caused by insufficient heat dissipation area, ensuring that the heat dissipation fins 14 can efficiently share the pressure of heat release.

[0044] The solid tooth structure of the heat dissipation fin 15 of the heat dissipation fin 14 helps to improve the thermal conductivity of the heat dissipation fin 14. The solid tooth fin 15 can conduct heat to the surface of the tooth fin 15 more directly and release heat quickly through heat exchange between the surface and the surrounding air.

[0045] A notch 16 is provided at one end of the heating tank 4, allowing the wiring to be directly introduced or led out from the notch 16, avoiding the need for wiring to bypass complex structures as in traditional designs. This simplifies the wiring layout, making it easier for installers to lay power and control lines, thus improving installation efficiency and ease of operation.

[0046] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0047] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0050] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0052] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0053] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery PTC heating plate, characterized in that, include: The substrate (2) and the mounting plate (3) are provided on the substrate (2), and the mounting plate (3) is provided with a heating groove (4) for mounting a PTC heating element; The mounting plate (3) is integrally connected to the substrate (2); the substrate (2) is provided with a first surface (5), the mounting plate (3) is provided with a second surface (6), and the distance between the mounting groove and the first surface (5) is greater than the distance between the mounting groove and the second surface (6).

2. The battery PTC heating plate according to claim 1, characterized in that, The heating groove (4) is arranged along the central axis of the mounting plate (3); the heating groove (4) passes through the mounting plate (3), and both ends of the heating groove (4) are connected to the outside.

3. The battery PTC heating plate according to claim 1, characterized in that, The heating tank (4) includes a first horizontal surface (7), a vertical surface (8), a transition surface (10), and a second horizontal surface (9) that are connected in sequence. The first horizontal surface (7) and the second horizontal surface (9) are arranged in parallel, and the transition surface (10) is arc-shaped.

4. The battery PTC heating plate according to claim 3, characterized in that, An arc-shaped groove (11) corresponding to the transition surface (10) is provided on the mounting plate (3).

5. The battery PTC heating plate according to claim 4, characterized in that, The transition surface (10) includes a first arc surface (12) with a radius of 2.3 mm and a second arc surface (13) with a radius of 1 mm. The vertical surface (8), the second arc surface (13), the first arc surface (12), the second arc surface (13) and the second horizontal surface (9) are connected in sequence.

6. The battery PTC heating plate according to claim 5, characterized in that, The arc groove (11) includes a third arc surface (17) with a radius of 1.5 mm and a fourth arc surface (18) with a radius of 1 mm. The fourth arc surface (18), the third arc surface (17) and the fourth arc surface (18) are connected in sequence. The first arc surface (12) and the third arc surface (17) are coaxially arranged.

7. The battery PTC heating plate according to claim 6, characterized in that, The second surface (6) includes a third horizontal surface (19) and a fourth horizontal surface (20), wherein the third horizontal surface (19), the fourth arc surface (18), the third arc surface (17), the fourth arc surface (18) and the fourth horizontal surface (20) are connected in sequence, and the distance between the third horizontal surface (19) and the first surface (5) is less than the distance between the fourth horizontal surface (20) and the first surface (5).

8. The battery PTC heating plate according to any one of claims 1-4, characterized in that, It also includes heat dissipation teeth (14), which are disposed on the substrate (2), and the heat dissipation teeth (14) and the mounting plate (3) are respectively disposed on opposite sides of the substrate (2); The area of ​​the heat dissipation denticle (14) corresponds to the area of ​​the mounting plate (3); the tooth plates (15) of the heat dissipation denticle (14) are solid structures.

9. The battery PTC heating plate according to any one of claims 1-4, characterized in that, One end of the heating tank (4) is provided with a notch (16) for wiring.

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