PTC (Positive Temperature Coefficient) heating vehicle-mounted battery system with heat dissipation function

Abstract

The utility model provides a PTC (Positive Temperature Coefficient) heating vehicle-mounted battery system with a heat dissipation function, which comprises a box body, a battery module, a PTC heating assembly and a fan, and the box body is provided with an air inlet and an air outlet; the battery module is arranged in the box body; the PTC heating assemblies are arranged at the two ends of the battery module; the fan is arranged on the box body and located at the air outlet, and the PTC heating assembly is located on an air duct of the fan; in the working process of the battery module, the battery module can generate heat, the heat is transferred to the PTC heating assembly, the PTC heating assembly is cooled through the fan, and when the battery module is in a low-temperature environment, the PTC heating assembly is powered on to heat the battery module, so that the battery module works normally. According to the utility model, through the arrangement of the structure, not only can the battery module 1 be cooled, but also the battery module 1 can be heated, so that the operation capability of the battery system is improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery heat dissipation technology, specifically to a PTC heating vehicle battery system with heat dissipation function. Background Technology

[0002] With the escalation of the global energy crisis and environmental problems, the application of new energy vehicles is becoming increasingly widespread. Currently, all new energy vehicles use lithium batteries for power. Lithium batteries are composed of multiple battery modules, which are connected together in series and parallel. During operation, a large amount of heat is generated inside the battery, which needs to be dissipated in time. Otherwise, it may lead to thermal runaway of the battery cell and cause a safety accident. In addition, the discharge of the battery cell is limited in low-temperature environments, and charging of the battery cell is prohibited in low-temperature environments. This requires heating the battery. Existing battery heaters are installed at the bottom or side of the battery pack, which can only heat the battery pack and cannot dissipate heat, resulting in low heat dissipation efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defect in the prior art that the existing battery heater is installed at the bottom or side of the battery pack, which can only heat the battery pack and cannot dissipate heat, resulting in low heat dissipation efficiency of the battery pack.

[0004] Therefore, this utility model provides a PTC heating vehicle battery system with heat dissipation function, comprising:

[0005] The enclosure is equipped with an air inlet and an air outlet;

[0006] The battery module is housed within the casing;

[0007] PTC heating components are disposed at both ends of the battery module;

[0008] A fan is mounted on the housing and located at the air outlet; the PTC heating element is located on the fan's air duct.

[0009] During the operation of the battery module, the battery module generates heat, which is transferred to the PTC heating element. The fan dissipates heat from the PTC heating element. When the battery module is in a low-temperature environment, the PTC heating element is powered on to heat the battery module, enabling the battery module to operate normally.

[0010] Optionally, the battery module includes:

[0011] support;

[0012] The battery cell is mounted on the bracket;

[0013] Several heat-conducting plates are spaced apart between the battery cells, and their two ends respectively abut against the PTC heating assembly.

[0014] Optionally, the heat-conducting plate is I-shaped, and multiple heat-conducting plates are connected to each other to form a cavity, in which the battery cell is installed.

[0015] Optionally, the heat-conducting plate is an aluminum plate.

[0016] Optionally, the PTC heating assembly includes:

[0017] Connecting plates are disposed at both ends of the heat-conducting plate and are respectively connected to the heat-conducting plate;

[0018] A PTC heating element is disposed in the middle of the connecting plate, and the PTC heating element is adapted to heat the battery cell.

[0019] Optionally, one end of the PTC heating element is provided with a lead wire, which is connected to an external power source.

[0020] Optionally, a thermally conductive silicone pad is provided between the connecting plate and the side end face of the heat-conducting plate, and the thermally conductive silicone pad is adapted to ensure a tight fit between the connecting plate and the heat-conducting plate.

[0021] The technical solution of this utility model has the following advantages:

[0022] 1. This utility model provides a PTC-heated vehicle battery system with heat dissipation function, including a housing, a battery module, a PTC heating component, and a fan. The housing is provided with an air inlet and an air outlet; the battery module is disposed in the housing; the PTC heating component is disposed at both ends of the battery module; the fan is disposed on the housing and located at the air outlet, and the PTC heating component is located in the air duct of the fan; during the operation of the battery module, the battery module generates heat, which is transferred to the PTC heating component, and the fan dissipates the heat from the PTC heating component. When the battery module is in a low-temperature environment, the PTC heating component is energized to heat the battery module, enabling the battery module to operate normally.

[0023] Battery cells experience limited discharge at low temperatures, and charging is also prohibited in such environments. This necessitates battery heating. Existing battery heaters, installed at the bottom or side of the battery pack, only heat the pack itself, failing to dissipate heat, resulting in low cooling efficiency. In this embodiment, when the PTC heating component is energized, it heats the battery module, preventing its operation from being affected by low temperatures. When the PTC heating component is de-energized, the heat generated by the battery module is transferred to it, and the fan dissipates heat from the PTC heating component, thereby cooling the battery module. Thus, by incorporating the PTC heating component, both heat and cooling of the battery module are achieved, improving the battery system's operational capabilities and extending its lifespan.

[0024] 2. This utility model provides a PTC-heated vehicle battery system with heat dissipation function. The battery module includes a bracket, battery cells, and several heat-conducting plates. The battery cells are mounted on the bracket. The several heat-conducting plates are spaced apart between the battery cells, and their ends respectively abut against the PTC heating assembly. In this embodiment of the utility model, by setting the heat-conducting plates so that they are directly connected to the PTC heating assembly, the heat dissipation area can be increased, thereby improving the heat dissipation capacity of the battery pack. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the connection structure between the heat-conducting plate and the PTC heating assembly of this utility model;

[0028] Figure 3 This is a schematic diagram of the heat-conducting plate structure of this utility model.

[0029] Explanation of reference numerals in the embodiments:

[0030] 1. Battery module; 2. PTC heating element; 3. Fan;

[0031] 11. Bracket; 12. Battery cell; 13. Heat-conducting plate;

[0032] 21. Connecting plate; 22. PTC heating element. Detailed Implementation

[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Example

[0038] like Figures 1 to 3As shown, this embodiment provides a PTC-heated vehicle battery system with heat dissipation function, including a housing, a battery module 1, a PTC heating component 2, and a fan 3. The housing is provided with an air inlet and an air outlet. The battery module 1 is disposed in the housing. The PTC heating component 2 is disposed at both ends of the battery module 1. The fan 3 is disposed on the housing and located at the air outlet, and the PTC heating component 2 is located in the air duct of the fan 3. During the operation of the battery module 1, the battery module 1 generates heat, which is transferred to the PTC heating component 2. The fan 3 dissipates heat from the PTC heating component. When the battery module 1 is in a low-temperature environment, the PTC heating component 2 is powered on to heat the battery module 1, enabling the battery module 1 to operate normally.

[0039] In this embodiment of the invention, the PTC heating component 2 is first installed onto the battery module 1, then the battery module 1 is installed into the housing, and then the fan 3 is installed onto the air outlet. When the battery module 1 is in a low-temperature environment, it cannot work. The PTC heating component 2 is powered on, generating heat, which is then transferred to the battery module 1 to heat it and enable it to work normally. When the battery module 1 is not in a low-temperature environment, the PTC heating component 2 is not powered on, and the battery module 1 works normally, generating a large amount of heat. This heat is transferred to the PTC heating component 2, and the fan 3 blows air onto the PTC heating component 2 to dissipate heat, thus completing the heating and cooling of the battery module 1.

[0040] Battery cells experience limited discharge at low temperatures, and charging is also prohibited in such environments. This necessitates battery heating. Existing battery heaters, installed at the bottom or side of the battery pack, only heat the pack itself, failing to dissipate heat, resulting in low heat dissipation efficiency. In this embodiment, when the PTC heating component 2 is energized, it heats the battery module 1, preventing its operation from being affected by low temperatures. When the PTC heating component 2 is de-energized, the heat generated by the battery module 1 is transferred to it, and the fan 3 blows air to dissipate heat from the PTC heating component 2, thereby cooling the battery module 1. Thus, by using the PTC heating component 2, both heat and heat are provided for the battery module 1, improving the battery system's operational capabilities and extending its lifespan.

[0041] Furthermore, the battery module 1 includes a bracket 11, a battery cell 12, and a plurality of heat-conducting plates 13; the battery cell 12 is disposed on the bracket 11; the plurality of heat-conducting plates 13 are spaced apart between the battery cells 12, and their two end edges respectively abut against the PTC heating component 2. In this embodiment of the present invention, by setting the heat-conducting plates 13 so that the heat-conducting plates 13 are directly connected to the PTC heating component 2, the heat dissipation area can be increased, thereby improving the heat dissipation capacity of the battery pack.

[0042] Furthermore, such as Figure 3 As shown, the heat-conducting plate 13 is I-shaped, and multiple heat-conducting plates 13 are interconnected to form an installation space, in which the battery cell 12 is installed. In this embodiment of the present invention, multiple battery cells 12 are provided, and the multiple battery cells 12 are respectively installed in multiple installation spaces. The multiple battery cells 12 are then connected in sequence to form the battery module 1. When the battery module 1 is working, it generates heat, which is transferred to the PTC heating component 2 through the heat-conducting plate 13. The fan 3 blows air onto the PTC heating component 2 to dissipate heat, thereby dissipating heat from the battery module 1.

[0043] Furthermore, the heat-conducting plate 13 is made of aluminum. Of course, the heat-conducting plate 13 can be made of copper or other plates. This embodiment does not limit the material of the heat-conducting plate 13. Those skilled in the art can change the material of the heat-conducting plate 13 according to the actual situation, as long as the same technical effect can be achieved.

[0044] Furthermore, such as Figure 2 As shown, the PTC heating assembly 2 includes a connecting plate 21 and a PTC heating element 22. The connecting plate 21 is disposed at both ends of the heat-conducting plate 13 and is connected to the heat-conducting plate 13 respectively. The PTC heating element 22 is disposed in the middle of the connecting plate 21 and is adapted to heat the battery cell 12. In this embodiment of the present invention, the connecting plate 21 is made of aluminum, and the connecting plate 21 can also be formed by extending the PTC heating element 22 outward, thereby increasing the heat conduction surface and improving the heat dissipation effect.

[0045] Furthermore, one end of the PTC heating element 22 is provided with a lead wire, which is connected to an external power source. By connecting the lead wire to an external power source, the PTC heating element 22 can be energized and heated, and the heat is then transferred to the heat-conducting plate 13 through the connecting plate 21 to heat the battery cell 12, thereby completing the heating of the battery cell 12.

[0046] Furthermore, a thermally conductive silicone pad is provided between the connecting plate 21 and the two end faces of the heat-conducting plate 13. The thermally conductive silicone pad is adapted to ensure a tight fit between the connecting plate 21 and the heat-conducting plate 13. In addition, the thermally conductive silicone pad can also transfer heat between the connecting plate 21 and the heat-conducting plate 13.

[0047] In this embodiment of the utility model, two fans 3 are provided, each corresponding to one of the two PTC heating elements 22, so that the PTC heating elements 22 are located in the air duct of the fan 3. When the fan 3 is started, it blows air onto the PTC heating elements 22 through forced convection, thereby accelerating the exhaust of air from inside the housing and improving the heat dissipation efficiency of the battery module 1.

[0048] The specific working process of the PTC heating vehicle battery system with heat dissipation function provided by this utility model is as follows:

[0049] First, the battery cell 12 is installed into the installation space enclosed by the heat-conducting plate 13. Then, the connecting plate 21 is connected to the heat-conducting plate 13. Next, the battery module 1 and the PTC heating element 2 are installed into the housing. Then, the fan 3 is installed on the air outlet. When the battery module 1 is working, it generates heat, which is transferred to the connecting plate 21 and the PTC heating element 22 through the heat-conducting plate 13. The fan 3 then blows air onto the connecting plate 21 and the PTC heating element 22 to dissipate heat, thus completing the heat dissipation of the battery module 1. When the battery module 1 is in a low-temperature environment, it needs to be heated. First, the PTC heating element 22 is energized and heated. Then, the heat is transferred to the heat-conducting plate 13 through the connecting plate 21 to heat the battery cell 12, thus completing the heating of the battery cell 12.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A PTC heating system for vehicle batteries with heat dissipation function, characterized in that, include: The enclosure is equipped with an air inlet and an air outlet; A battery module (1) is disposed inside the housing; PTC heating components (2) are disposed at both ends of the battery module (1); A fan (3) is installed on the housing and located at the air outlet, and the PTC heating component (2) is located on the air duct of the fan (3); During the operation of the battery module (1), the battery module (1) generates heat, which is transferred to the PTC heating component (2). The fan (3) dissipates heat from the PTC heating component (2). When the battery module (1) is in a low-temperature environment, the PTC heating component (2) is powered on to heat the battery module (1) so that the battery module (1) can operate normally.

2. The PTC heating vehicle battery system with heat dissipation function according to claim 1, characterized in that, The battery module (1) includes: Scaffold (11); The battery cell (12) is mounted on the bracket (11); Several heat-conducting plates (13) are spaced apart between the battery cells (12), and their two ends respectively abut against the PTC heating assembly (2).

3. The PTC heating vehicle battery system with heat dissipation function according to claim 2, characterized in that, The heat-conducting plate (13) is I-shaped, and multiple heat-conducting plates (13) are connected to each other to form a cavity, in which the battery cell (12) is installed.

4. The PTC heating vehicle battery system with heat dissipation function according to claim 3, characterized in that, The heat-conducting plate (13) is made of aluminum.

5. The PTC-heated vehicle battery system with heat dissipation function according to any one of claims 2 to 4, characterized in that, The PTC heating assembly (2) includes: A connecting plate (21) is disposed at both ends of the heat-conducting plate (13) and is connected to the heat-conducting plate (13) respectively; A PTC heating element (22) is disposed in the middle of the connecting plate (21), and the PTC heating element (22) is adapted to heat the battery cell (12).

6. The PTC heating vehicle battery system with heat dissipation function according to claim 5, characterized in that, One end of the PTC heating element (22) is provided with a lead wire, which is connected to an external power source.

7. The PTC heating vehicle battery system with heat dissipation function according to claim 5, characterized in that, A thermally conductive silicone pad is provided between the connecting plate (21) and the side end face of the heat-conducting plate (13), and the thermally conductive silicone pad is adapted to ensure that the connecting plate (21) and the heat-conducting plate (13) are tightly fitted together.

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