Integrated PTC heating plate system

Abstract

The utility model discloses an integrated PTC (Positive Temperature Coefficient) heating plate system, which relates to the technical field of automobile power batteries and comprises a box body, the power battery module is positioned in the box body; the power distribution unit is mounted in the box body, and the power distribution unit is located on one side of the power battery module; the heating plate is laid below the power battery module; the heat conduction pad is mounted between the power battery module and the heating plate; one end of the heating wire harness is connected into the heating plate; the other end of the heating wire harness extends out of the heating plate and is connected with an OT terminal; the heating wire harness is connected to the power distribution unit through an OT terminal; according to the utility model, the reliability of heating loop connection is improved, the fault problem of the PTC heating system is avoided, and the fault risk of the heating loop is reduced; the connection process between PTC heating plates is reduced, the assembly cost is reduced, the operation convenience is improved, and the risk that a heating wire harness connector is crushed by a module is reduced; and integrated independent parts are adopted, so that the maintenance is convenient, the fault frequency is reduced, and the overall quality of the power battery is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile power batteries, in particular to an integrated PTC heating plate system. Background Art

[0002] With the popularization of new energy vehicles, their endurance performance has also received widespread attention, especially in winter. The power battery heating systems currently used are mostly split PTC heating plates, which need to be assembled together when in use, which is not very convenient. Several PTC heating plates are connected together externally through wiring harnesses. Too many wiring harness connectors may cause unreliable system connections and affect its performance.

[0003] Therefore, in view of the problems of inconvenient operation and unreliable connection of the existing split PTC heating plate, a PTC heating plate structure with optimized structure, improved convenience during operation, reduced failure rate, easy maintenance, and further improved overall quality of the power battery is designed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated PTC heating plate system with optimized structure, improved operational convenience, reduced failure rate, easy maintenance, and further improved overall quality of the power battery.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] Integrated PTC heating panel system, including:

[0007] Box;

[0008] A power battery module, wherein the power battery module is located in the box;

[0009] A power distribution unit, which is installed in the box and located on one side of the power battery module;

[0010] A heating plate, which is placed under the power battery module;

[0011] A thermal pad installed between the power battery module and the heating plate;

[0012] A heating harness, one end of which is connected to the interior of the heating plate;

[0013] The other end of the heating harness extends to the outside of the heating plate and is connected to an OT terminal;

[0014] The heating harness is connected to the power distribution unit via an OT terminal.

[0015] Furthermore, positioning pins are vertically distributed on the bottom of the box;

[0016] Positioning holes are provided on the heating plate;

[0017] The positioning holes pass through positioning pins at corresponding positions to achieve installation and alignment of the heating plate.

[0018] Furthermore, the power battery module is provided with a threaded hole in the vertical direction;

[0019] The heating plate is provided with a mounting hole;

[0020] The power battery module is installed and fixed by screwing the bolts from top to bottom along the threaded holes until they pass through the mounting holes and are screwed into the bottom of the box.

[0021] In the above technical solution, the integrated PTC heating plate system of the utility model has the following beneficial effects:

[0022] 1. The integrated PTC heating plate system proposed by the utility model improves the reliability of the heating circuit connection, avoids the PTC heating system failure problem caused by unreliable heating harness connection, and reduces the failure risk of the heating circuit;

[0023] 2. The integrated PTC heating plate only leads to one wiring harness connected to the outside, which reduces the connection process between the PTC heating plates and reduces the assembly cost. The heating harness can be directly connected to the designated position, which improves the convenience of operation and reduces the risk of the heating harness connector being crushed by the module during subsequent module installation.

[0024] 3. The utility model is an integrated independent component, which can be replaced separately in case of failure, which is convenient for maintenance, reduces the failure frequency of the power battery heating system, and improves the overall quality of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 A schematic structural diagram of an integrated PTC heating plate system provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic structural diagram of the heating plate in the integrated PTC heating plate system provided by an embodiment of the present utility model.

[0028] Description of reference numerals:

[0029] 1. Box body; 2. Power battery module; 3. Power distribution unit; 4. Heating plate; 5. Thermal pad; 6. Heating harness; 7. OT terminal; 8. Positioning pin; 9. Bolt;

[0030] 21. Threaded hole;

[0031] 41. Positioning hole; 42. Mounting hole. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] It should be noted that the terms "below", "one end", "the other end", etc. used in this article to indicate 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. Similar expressions are only for illustrative purposes, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] See also Figure 1-Figure 2 As shown;

[0035] Integrated PTC heating panel system, including:

[0036] Box 1;

[0037] Power battery module 2, the power battery module 2 is located in the box 1;

[0038] The power distribution unit 3 is installed in the box 1 and is located on one side of the power battery module 2;

[0039] Heating plate 4, which is placed under the power battery module 2;

[0040] Thermal pad 5, which is installed between the power battery module 2 and the heating plate 4;

[0041] A heating harness 6, one end of which is connected to the interior of the heating plate 4;

[0042] The other end of the heating harness 6 extends to the outside of the heating plate 4 and is connected to an OT terminal 7;

[0043] The heating harness 6 is connected to the power distribution unit 3 via the OT terminal 7 .

[0044] Positioning pins 8 are vertically distributed on the bottom of the box body 1;

[0045] The heating plate 4 is provided with a positioning hole 41;

[0046] The positioning holes 41 pass through the corresponding positioning pins 8 to achieve the installation and alignment of the heating plate 4.

[0047] The power battery module 2 is provided with a threaded hole 21 in the vertical direction;

[0048] The heating plate 4 is provided with a mounting hole 42;

[0049] The power battery module 2 is installed and fixed by screwing the bolt 9 from top to bottom along the threaded hole 21 until it passes through the mounting hole 42 and is screwed into the bottom of the box body 1 .

[0050] Specifically, in the integrated PTC heating plate system, the power battery module 2 is installed in the box body 1. According to the shape of the box body 1, the position of the threaded hole 21 of the power battery module 2 and the position of the positioning pin 8, the corresponding shape, size and position of the heating circuit of the heating plate 4 are designed. According to the position of the power distribution unit 3 in the box body 1, the outlet position of the heating plate 4 and the size of the heating harness 6 are confirmed; specifically, the power battery module 2 and the power distribution unit 3 are respectively distributed on the box body 1, the heating plate 4 is laid under the power battery module 2, and a thermal pad 5 is installed between the heating plate 4 and the power battery module 2. When the heating plate 4 is installed under the power battery module 2, the positioning hole 41 of the heating plate 4 corresponds to the position of the positioning pin 8, and the positioning hole 41 should pass through the positioning pin 8. The positioning of the heating plate 4 The positioning hole 41 corresponds to the positioning pin 8 of the box body 1 to prevent the heating plate 4 from being installed upside down; at the same time, the mounting hole 42 of the heating plate 4 corresponds to the position of the threaded hole 21 of the power battery module 2. When the power battery module 2 is located above the heating plate 4, a bolt 9 is used to screw from the threaded hole 21 from top to bottom. The bolt 9 passes through the threaded hole 21 and the mounting hole 42 in sequence and is fixedly screwed into the bottom of the box body 1, thereby achieving the installation and fixation of the power battery module 2. The heating plate 4 is positioned by the positioning pin 8 and then fixed by the bolt 9; and a heating harness 6 is arranged inside the heating plate 4, and the heating harness 6 extends to the outside of the heating plate 4 and corresponds to the position of the distribution unit 3. An OT terminal 7 is installed at one end of the heating harness 6 located outside the heating plate 4, and is directly connected to the distribution unit 3 through the OT terminal 7;

[0051] This structure can make the current in the heating circuit the same, so that the thermal effect generated by the current is also the same, so that each module in the power battery module 2 is heated evenly, reducing the temperature difference in the power battery module 2 and improving the service life of the power battery module 2. The heating plate 4 reduces the connection of the heating harness 6 on the outside, avoiding problems such as pin withdrawal and poor contact of the terminal due to problems with the harness connector;

[0052] Furthermore, after the heating plate 4 is placed, the heating harness 6 can be directly connected to the distribution unit 3 through the OT terminal 7, thereby reducing the risk of the heating harness 6 being crushed by the power battery module 2; after the heating plate 4 is placed, a thermal pad 5 (or thermal adhesive) is placed between the heating plate 4 and the power battery module 2 to further improve the efficiency of heat transfer to the power battery module 2. If the thermal pad 5 uses thermal adhesive and the heating plate 4, the risk of thermal adhesive overflowing from the gap of the original split PTC heating plate can also be effectively avoided. After the installation is completed, the power battery module 2 is fixed with bolts 9 to ensure the reliability of the connection between the power battery module 2 and the heating plate 4.

[0053] Among them, the basic composition of the heating plate 4 includes a PTC heating plate body with a flat structure, a tube cavity is set on the lower surface of the PTC heating plate body, and a PTC heating component is set in the tube cavity. The PTC heating component is a PTC heating core with an electrode at one end, and a layer of insulating film is wrapped on the outer surface of the PTC heating core. The PTC heating core generates heat and conducts heat to the PTC heating plate body, and the power battery module 2 is heated by the PTC heating plate body.

[0054] The heating plate 4 in the integrated PTC heating plate system is an integrated structure. The outer dimensions of the heating plate 4 and the position of the heating circuit are determined according to the structure of the box 1 and the arrangement of the power battery module 2. The outlet position of the heating harness 6 is determined according to the electrical components connected to the heating harness 6, thereby improving the reliability of the heating circuit connection, reducing the assembly cost, and improving the overall quality of the power battery.

[0055] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. Integrated PTC heating plate system, characterized by: include: Box (1); A power battery module (2), wherein the power battery module (2) is located in the box (1); A power distribution unit (3), the power distribution unit (3) being installed in the box (1) and located on one side of the power battery module (2); A heating plate (4), the heating plate (4) being laid below the power battery module (2); A thermal pad (5), the thermal pad (5) being installed between the power battery module (2) and the heating plate (4); A heating wire harness (6), one end of which is connected to the interior of the heating plate (4); The other end of the heating harness (6) extends to the outside of the heating plate (4) and is connected to an OT terminal (7); The heating harness (6) is connected to the power distribution unit (3) via the OT terminal (7).

2. The integrated PTC heating panel system according to claim 1, characterized in that: Positioning pins (8) are vertically distributed on the bottom of the box (1); The heating plate (4) is provided with a positioning hole (41); The positioning hole (41) passes through the positioning pin (8) at the corresponding position to achieve the installation alignment of the heating plate (4).

3. The integrated PTC heating panel system according to claim 1, characterized in that: The power battery module (2) is provided with a threaded hole (21) in the vertical direction; The heating plate (4) is provided with a mounting hole (42); The power battery module (2) is installed and fixed by screwing a bolt (9) from top to bottom along the threaded hole (21) through the mounting hole (42) and into the bottom of the box (1).

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