CN211152233U

CN211152233U - PTC heating module

Info

Publication number: CN211152233U
Application number: CN201921248236.1U
Authority: CN
Inventors: 谢速; 张伦; 文宏岩
Original assignee: Qiao Luming Technology Co ltd
Current assignee: Qiao Luming Technology Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-07-31
Anticipated expiration: 2029-08-02

Abstract

The utility model provides a PTC heating module, belonging to the technical field of electric heating devices, comprising a heating sheet which comprises a plurality of PTC thermistors, and any two adjacent PTC thermistors are tightly jointed; the positive plate is attached to one side of the heating plate, a first strip-shaped groove is formed in the positive plate along an attachment gap between any two adjacent PTC thermistors, one side of the first strip-shaped groove is open, the other side of the first strip-shaped groove is closed, and any two adjacent first strip-shaped grooves are arranged in a vertically staggered mode; the negative pole piece, its opposite side laminating setting with the piece that generates heat, the second bar groove has been seted up along the laminating gap between arbitrary two adjacent PTC thermistors to the negative pole piece, second bar groove one end opening, and the other end seals, and second bar groove and the crisscross setting from top to bottom of the first bar groove on the corresponding position. The utility model has the advantages of compact structure.

Description

PTC heating module

Technical Field

The utility model belongs to the technical field of electric heater unit, a PTC module that generates heat is related to.

Background

The PTC (Positive Temperature coefficient) heater is a PTC heater. The PTC heater has the characteristics of high starting speed, good temperature control, ideal working reliability, energy conservation, long service life and the like. At present, PTC heaters are often installed in new energy electric vehicles for battery thermal management and air conditioning heating.

For example, a chinese patent with application number 201810863208.4 discloses a PTC heater, which comprises a controller electrically connected to a PTC heating assembly via a connecting assembly; the PTC heating assembly is arranged on the outer wall of the top or the outer wall of the bottom of the water tank, is in contact with the outer wall of the top or the outer wall of the bottom of the water tank and exchanges heat with the water tank; the controller is arranged on the outer side wall of the water tank, the controller is in contact with the outer side wall of the water tank, and the controller and the water tank are subjected to heat exchange.

However, in the heating module of the PTC heater, due to manufacturing errors or assembly errors, the plurality of PTC thermistors cannot be completely attached to each other, and therefore, the distance between the positive plate and the negative plate needs to be large enough to prevent current arcing, which results in space waste.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a compact structure's PTC module that generates heat.

The purpose of the utility model can be realized by the following technical proposal: a PTC heating module comprising:

the heating sheet comprises a plurality of PTC thermistors, and any two adjacent PTC thermistors are tightly attached to each other;

the positive plate is attached to one side of the heating plate, a first strip-shaped groove is formed in the positive plate along an attachment gap between any two adjacent PTC thermistors, one side of the first strip-shaped groove is open, the other side of the first strip-shaped groove is closed, and any two adjacent first strip-shaped grooves are arranged in a vertically staggered mode;

the negative pole piece, its opposite side laminating setting with the piece that generates heat, the second bar groove has been seted up along the laminating gap between arbitrary two adjacent PTC thermistors to the negative pole piece, second bar groove one end opening, and the other end seals, and second bar groove and the crisscross setting from top to bottom of the first bar groove on the corresponding position.

As the utility model discloses a further improvement still includes insulating support, two insulating pieces and shell cover, and insulating support runs through to be provided with and supplies the chamber that holds of the piece embedding that generates heat, and positive plate, negative pole piece imbed respectively and hold the chamber and with the setting of the piece laminating that generates heat, and the left and right sides along insulating support is concave respectively and is formed with annular step, and two insulating pieces imbed annular step respectively and set up with positive plate, the laminating of negative pole piece, and the shell cover is located the insulating support outside and is laminated the setting with two insulating pieces.

As a further improvement, the positive plate and the negative plate respectively extend upwards to form a positive connecting end and a negative connecting end, and the left side and the right side of the insulating support are respectively provided with a limit notch for embedding the positive connecting end and the negative connecting end.

As a further improvement, the insulating piece upwards extends and has spacing arch, spacing arch embedding spacing breach and with anodal link or the laminating of negative pole link.

As a further improvement, the utility model is formed with the reference column along the spacing breach evagination, and anodal link, negative pole link are seted up respectively and are supplied anodal locating hole, the negative pole locating hole of reference column embedding.

As a further improvement, the quantity of anodal locating hole or negative pole locating hole is two, and one of them is circular, and the other is the oblong, and every spacing breach is equipped with two reference columns, and the reference column all is cylindrical setting.

As a further improvement, the cross-section of the shell is U-shaped, and the two sides of the U-shaped incline out respectively.

As a further improvement, the insulating support is in the shape of a wide upper part and a narrow lower part, and the two sides of the U-shaped casing are respectively embedded into the annular steps.

As a further improvement of the utility model, the upper side wall and the lower side wall of the annular step are obliquely arranged.

As a further improvement of the utility model, the insulating sheet is made of alumina.

Based on the technical scheme, the embodiment of the utility model provides a can produce following technological effect at least:

1. through set up crisscross first bar groove, second bar groove about respectively on positive plate, negative pole piece for enough interval is reserved in the position in PTC thermistor laminating gap to the positive plate in order to prevent to produce the electric current and draw the arc phenomenon, and the perpendicular interval of positive plate and negative pole piece can be done littleer, makes PTC generate heat the structure of module compacter, and space utilization is higher. Meanwhile, the positive plate and the negative plate can reduce the stress generated during heating through the first strip-shaped groove and the second strip-shaped groove respectively, and the reliability is better.

2. Through set up spacing breach with location installation positive plate, negative pole piece and insulating piece on insulating support, it is more convenient to assemble, and prevents effectively that positive plate, negative pole piece and insulating piece from becoming flexible.

3. The positioning columns are arranged to accurately position the mounting positions of the positive plate and the negative plate, so that subsequent electrical connection is facilitated.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of an insulating support.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a cross-sectional view of a preferred embodiment of the present invention.

Fig. 6 is a schematic view of the structure of the positive electrode sheet.

Fig. 7 is a schematic view of the structure of the negative electrode sheet.

In the figure, 100, heating sheet; 110. a PTC thermistor; 200. a positive plate; 210. a first bar-shaped groove; 220. a positive electrode connecting end; 221. a positive electrode positioning hole; 300. a negative plate; 310. a second strip groove; 320. a negative electrode connecting end; 321. a cathode positioning hole; 400. an insulating support; 410. an accommodating chamber; 420. an annular step; 430. a limiting notch; 431. a positioning column; 500. an insulating sheet; 510. a limiting bulge; 600. a case.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 7, the PTC heating module includes a heating sheet 100, a positive electrode sheet 200, a negative electrode sheet 300, an insulating support 400, an insulating sheet 500, and a casing 600.

The heating sheet 100 includes three PTC thermistors 110, and any two adjacent PTC thermistors 110 are closely attached to each other;

the positive plate 200 is attached to one side of the heating plate 100, a first strip-shaped groove 210 is formed in the positive plate 200 along an attachment gap between any two adjacent PTC thermistors 110, one side of the first strip-shaped groove 210 is open, the other side of the first strip-shaped groove is closed, and any two adjacent first strip-shaped grooves 210 are arranged in a vertically staggered mode;

the negative plate 300 is attached to the other side of the heating plate 100, a second strip-shaped groove 310 is formed in the negative plate 300 along an attachment gap between any two adjacent PTC thermistors 110, one end of the second strip-shaped groove 310 is open, the other end of the second strip-shaped groove 310 is closed, and the second strip-shaped groove 310 and the first strip-shaped groove 210 in the corresponding position are arranged in a vertically staggered manner;

insulating support 400 runs through and is provided with the chamber 410 that holds that supplies the embedding of piece 100 that generates heat, and positive plate 200, negative pole piece 300 imbed respectively and hold chamber 410 and with the setting of laminating of piece 100 that generates heat, and the left and right sides along insulating support 400 is concave respectively and is formed with annular step 420, and two insulating piece 500 imbed annular step 420 respectively and with positive plate 200, the setting of laminating of negative pole piece 300, and the insulating support 400 outside is located and with two insulating piece 500 laminating settings to the cover 600 covers of aluminium matter.

Through setting up first bar groove 210, the second bar groove 310 of crisscross from top to bottom on positive plate 200, negative pole piece 300 respectively for positive plate 200 reserves enough interval in the position of PTC thermistor 110 laminating gap and in order to prevent to produce the electric current and draw the arc phenomenon, and the perpendicular interval of positive plate 200 and negative pole piece 300 can be done littleer, makes PTC generate heat the structure of module compacter, and space utilization is higher. Meanwhile, the positive plate 200 and the negative plate 300 can reduce stress generated during heating through the first strip-shaped groove 210 and the second strip-shaped groove 310 respectively, and reliability is better.

Wherein, the material of insulating piece 500 is alumina, compares current silica gel membrane, and the insulating piece 500 heat conduction effect of alumina material is better, and difficult damage moreover, the reliability is better, and in addition, the insulating piece 500 assembly of stereoplasm is more convenient. In addition, the upper and lower sidewalls of the annular step 420 are inclined, so that the heat fins are guided to be fitted into the annular step 420, and the assembly is more convenient.

In order to improve the assembly efficiency, the positive plate 200 and the negative plate 300 respectively extend upwards to form a positive connecting end 220 and a negative connecting end 320, the left side and the right side of the insulating support 400 are respectively provided with a limiting notch 430 for embedding the positive connecting end 220 and the negative connecting end 320, the insulating plate 500 extends upwards to form a limiting protrusion 510, and the limiting protrusion 510 is embedded into the limiting notch 430 and attached to the positive connecting end 220 or the negative connecting end 320. Through set up spacing breach 430 on insulating support 400 with location installation positive plate 200, negative pole piece 300 and insulating piece 500, it is more convenient to assemble, and effectively prevents that positive plate 200, negative pole piece 300 and insulating piece 500 are not hard up.

In order to further accurately position the mounting positions of the positive plate 200 and the negative plate 300 for subsequent electrical connection, a positioning column 431 is convexly formed along the limiting notch 430, and the positive connecting end 220 and the negative connecting end 320 are respectively provided with a positive positioning hole 221 and a negative positioning hole 321 for embedding the positioning column 431.

The number of the positive electrode positioning holes 221 or the negative electrode positioning holes 321 is two, one of the positive electrode positioning holes is circular, the other one of the positive electrode positioning holes is oblong, each limiting notch 430 is provided with two positioning columns 431 which are horizontally arranged, and the positioning columns 431 are arranged in a cylindrical shape.

When the positive plate 200 or the negative plate 300 is assembled, the size error caused by manufacturing can be compensated through the oblong holes, so that the two positioning columns 431 can be embedded into the positive plate 200 or the negative plate 300.

It is worth mentioning that the cross-section of the sleeve 600 is in a U-shape, and the two sides of the U-shape incline outwards respectively, so that the PTC heating module can form a wedge-shaped fit when being embedded into the preset position of the PTC heater, so as to clamp and fix other elements in the sleeve 600, and the connection is more reliable. In addition, the insulating support 400 is in a shape of being wide at the top and narrow at the bottom, and the annular steps 420 are respectively embedded into the two sides of the U-shaped casing 600, so that the overall structure of the PTC heating module is more compact.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A PTC heating module, comprising:

2. A PTC heating module according to claim 1, wherein: still include insulating support, two insulating pieces and cover shell, insulating support runs through to be provided with and supplies the chamber that holds of the piece embedding that generates heat, and positive plate, negative pole piece embedding respectively hold the chamber and with the piece laminating setting that generates heat, inwards form respectively along the left and right sides of insulating support has annular step, two insulating pieces embedding annular step respectively and with positive plate, negative pole piece laminating setting, the cover shell cover is located the insulating support outside and is set up with two insulating piece laminating.

3. A PTC heating module according to claim 2, wherein: the positive plate and the negative plate respectively extend upwards to form a positive connecting end and a negative connecting end, and the left side and the right side of the insulating support are respectively provided with a limiting notch for embedding the positive connecting end and the negative connecting end.

4. A PTC heating module according to claim 3, wherein: the insulating piece upwards extends to have spacing arch, spacing arch embedding spacing breach and with anodal link or the laminating of negative pole link.

5. A PTC heating module according to claim 3, wherein: a positioning column is convexly formed along the limiting notch, and an anode positioning hole and a cathode positioning hole for embedding the positioning column are respectively formed in the anode connecting end and the cathode connecting end.

6. A PTC heating module according to claim 5, wherein: the number of the positive electrode positioning holes or the negative electrode positioning holes is two, one of the positive electrode positioning holes or the negative electrode positioning holes is circular, the other one of the positive electrode positioning holes or the negative electrode positioning holes is long circular, each limiting notch is provided with two positioning columns, and the positioning columns are all arranged in a cylindrical mode.

7. A PTC heating module according to claim 2, wherein: the cross-section of cover shell is the U font setting, and the both sides of U font lean out respectively.

8. A PTC heating module according to claim 7, wherein: the insulating support is arranged in a shape with a wide upper part and a narrow lower part, and annular steps are respectively embedded into two sides of the U-shaped casing.

9. A PTC heating module according to claim 2, wherein: the upper side wall and the lower side wall of the annular step are obliquely arranged.

10. A PTC heating module according to claim 2, wherein: the insulating sheet is made of aluminum oxide.