Low-voltage PTC heater without negative electrode parallel connection

Abstract

The utility model discloses a kind of low-voltage PTC heaters of negative electrode not parallel, including vertically arranged shell one, the top of shell one is equipped with horizontally arranged shell two, PTC heating core is equipped in shell one;The PTC heating core includes aluminium pipe, the side of aluminium pipe is equipped with single corrugated strip, one side of single corrugated strip is equipped with double corrugated strip, one end of aluminium pipe is equipped with PTC electrode plate support, one end of double corrugated strip is equipped with stamping terminal.The insulation of ceramic substrate is pasted on one side of middle aluminium pipe, two negative electrodes are separated to output, single negative electrode can be used with PTC1+, two negative electrodes in parallel can be used with PTC1+, PTC2+ and PTC3+, realize current balance, low consumption, high endurance.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure PTC heater technology, specifically to a low-pressure PTC heater with non-parallel negative electrodes. Background Technology

[0002] In the absence of engine waste heat, electronic heating products are needed to provide heat for winter vehicle heating, defrosting and defogging safety requirements, and the short lifespan of power batteries at low temperatures. PTC heaters are a good choice, and new energy vehicles require PTC heaters for their air conditioning systems.

[0003] However, in existing new energy vehicles, the low-pressure heaters for heating air mostly have two negative electrodes sharing a common terminal, resulting in high output current, high energy consumption, and reduced range.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a low-pressure PTC heater with non-parallel negative electrodes to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A low-voltage PTC heater with non-parallel negative electrodes includes a vertically arranged housing 1, a horizontally arranged housing 2 on the top of the housing 1, and a PTC heating core inside the housing 1; the PTC heating core includes three sets of aluminum tubes, each aluminum tube has a single corrugated strip on its side, a double corrugated strip on one side of the single corrugated strip, a PTC electrode plate support at one end of each aluminum tube, and a stamped terminal at one end of each double corrugated strip.

[0008] Preferably, the stamped terminal is connected to the double corrugated strip by a rivet.

[0009] Preferably, a ceramic substrate for insulation is provided on one side of the aluminum tube located in the middle.

[0010] Preferably, the plurality of PTC electrode plate supports and the stamped terminals are formed sequentially from right to left as PTC1+, PTC2-, PTC3+, PTC4- and PTC5+.

[0011] Preferably, one end of PTC1+ is connected to PTC2-, and a heating element is provided between PTC1+ and PTC2-;

[0012] One end of the PTC3+ is connected to the second heating element, and the other end of the second heating element is connected to the PTC4- and the third heating element respectively;

[0013] The other end of the heating element three is connected to the PTC5+.

[0014] Preferably, the two negative electrodes of PTC2- and PTC4- are not connected in parallel, so that PTC2- can be used with PTC1+, and PTC4- can be used with PTC3+ and PTC5+.

[0015] The beneficial effects of this utility model are as follows: by attaching a ceramic substrate to one side of the middle aluminum tube for insulation, the two negative poles can be output separately. A single negative pole can be used with PTC1+, and the two negative poles can be connected in parallel to be used with PTC1+, PTC2+, and PTC3+, thereby achieving current balance, low power consumption, and long battery life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a low-pressure PTC heater with non-parallel negative electrodes according to an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the PTC heating core in a low-pressure PTC heater with non-parallel negative electrodes according to an embodiment of the present utility model;

[0019] Figure 3 This is a circuit diagram of a low-pressure PTC heater with non-parallel negative electrode according to an embodiment of the present invention.

[0020] In the picture:

[0021] 1. Housing 1; 2. Housing 2; 3. PTC heating core; 4. Aluminum tube; 5. Single corrugated strip; 6. Double corrugated strip; 7. PTC electrode plate bracket; 8. Stamped terminal; 9. Rivet; 10. Ceramic substrate. Detailed Implementation

[0022] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0023] According to an embodiment of the present invention, a low-pressure PTC heater with non-parallel negative electrodes is provided.

[0024] Example 1:

[0025] like Figure 1-3 As shown, the low-pressure PTC heater with non-parallel negative electrodes according to an embodiment of the present utility model includes a vertically arranged housing 1, a horizontally arranged housing 2 on the top of the housing 1, and a PTC heating core 3 inside the housing 1.

[0026] The PTC heating core 3 includes three sets of aluminum tubes 4. The side of the aluminum tube 4 is provided with a single corrugated strip 5, and one side of the single corrugated strip 5 is provided with a double corrugated strip 6. One end of the aluminum tube 4 is provided with a PTC electrode plate bracket 7, and one end of the double corrugated strip 6 is provided with a stamped terminal 8.

[0027] Example 2:

[0028] like Figure 1-3 As shown, the stamped terminal 8 is connected to the double corrugated strip 6 by rivets 9. A ceramic substrate 10 for insulation is provided on one side of the aluminum tube 4 located in the middle. A plurality of PTC electrode plate supports 7 and the stamped terminal 8 are formed from right to left as PTC1+, PTC2-, PTC3+, PTC4- and PTC5+.

[0029] Example 3:

[0030] like Figure 1-3 As shown, one end of PTC1+ is connected to PTC2-, and a heating element is provided between PTC1+ and PTC2-;

[0031] One end of the PTC3+ is connected to the second heating element, and the other end of the second heating element is connected to the PTC4- and the third heating element respectively;

[0032] The other end of the heating element three is connected to the PTC5+.

[0033] The two negative electrodes of PTC2- and PTC4- are not connected in parallel, so that PTC2- can be used with PTC1+, and PTC4- can be used with PTC3+ and PTC5+.

[0034] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0035] In practical applications, the two negative terminals of PTC2- and PTC4- are not connected in parallel. PTC2- is used with PTC1+, and PTC4- is used with PTC3+ and PTC5+. Following the principle of parallel current splitting, the power consumption is low and the battery life is long.

[0036] Tier 1: PTC1;

[0037] Second tier: PTC3 + PTC5;

[0038] Three levels: PTC1+PTC3+PTC5.

[0039] In summary, by utilizing the above-mentioned technical solution of this utility model, by attaching a ceramic substrate to one side of the middle aluminum tube for insulation, two negative electrodes can be output separately. A single negative electrode can be used with PTC1+, and two negative electrodes connected in parallel can be used with PTC1+, PTC2+, and PTC3+, thereby achieving current balance, low power consumption, and long battery life.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-voltage PTC heater in which a negative electrode is not connected in parallel, characterized by It includes a vertically arranged housing 1 (1), a horizontally arranged housing 2 (2) on the top of the housing 1 (1), and a PTC heating core (3) inside the housing 1 (1); The PTC heating core (3) includes three sets of aluminum tubes (4). The side of the aluminum tube (4) is provided with a single corrugated strip (5). The side of the single corrugated strip (5) is provided with a double corrugated strip (6). One end of the aluminum tube (4) is provided with a PTC electrode plate bracket (7). One end of the double corrugated strip (6) is provided with a stamped terminal (8).

2. The low-voltage PTC heater according to claim 1, wherein The stamped terminal (8) is connected to the double corrugated strip (6) by a rivet (9).

3. The low-voltage PTC heater according to claim 1, wherein A ceramic substrate (10) for insulation is provided on one side of the aluminum tube (4) located in the middle.

4. A low-pressure PTC heater with non-parallel negative electrodes according to claim 3, characterized in that, The PTC electrode plate supports (7) and the stamped terminals (8) are formed from right to left as PTC1+, PTC2-, PTC3+, PTC4- and PTC5+.

5. A low-pressure PTC heater with non-parallel negative electrodes according to claim 4, characterized in that, One end of PTC1+ is connected to PTC2-, and a heating element is provided between PTC1+ and PTC2-; One end of the PTC3+ is connected to the second heating element, and the other end of the second heating element is connected to the PTC4- and the third heating element respectively; The other end of the heating element three is connected to the PTC5+.

6. A low-pressure PTC heater with non-parallel negative electrodes according to claim 5, characterized in that, The two negative electrodes of PTC2- and PTC4- are not connected in parallel, so that PTC2- can be used with PTC1+, and PTC4- can be used with PTC3+ and PTC5+.

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