CN208284306U - A kind of heat radiating type power resistor - Google Patents
A kind of heat radiating type power resistor Download PDFInfo
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- CN208284306U CN208284306U CN201820717329.3U CN201820717329U CN208284306U CN 208284306 U CN208284306 U CN 208284306U CN 201820717329 U CN201820717329 U CN 201820717329U CN 208284306 U CN208284306 U CN 208284306U
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Abstract
The utility model discloses a kind of heat radiating type power resistors, including substrate, the resistance group that multiple groups are formed with the resistance of several series connection and/or parallel connection is provided on the substrate, the substrate both ends have each extended over a lead, every group of resistance group is sequentially connected by cascade between two leads, the equivalent resistance resistance value formed between two leads is identical as the resistance value of required resistor, and substrate is welded on pcb board corresponding position by the lead.The utility model utilizes equivalent resistance principle, make multiple resistance series connection and or parallel connection by way of form required for resistor total resistance value and general power, the area for contacting resistance and air increases, heat dissipation effect is effectively promoted, energy loss is reduced, the service life of resistor is extended.
Description
Technical field
The utility model relates to electronic equipment, especially a kind of heat radiating type power resistor.
Background technique
In electronic apparatus application, it is easy to the biggish resistance of power, such as 5W, 10W are encountered, and market prevalence is answered now
Such power consumption resistance is encapsulated using ceramic shell, the metal oxide film electricity of such as Fig. 1, one 3W or 5W of enclosed inside
Resistance.As can be seen from Figure, shell ceramics are cuboids, and metal oxidation resistance is cylindrical type, and the combination of the two has very big
Gap, this gap are combined by filler material；The ceramic coefficient of conductivity is not high certainly for filler material, and density is also poor, so thermally conductive
Property it is just bad, also just inevitable shape at thermal resistance.The resistor only leans on external ceramic shell to distribute heat, heat collection to air contact
Middle temperature is high, and due to concentrating the area of heat dissipation small, so temperature increases, while heat can not effectively disperse；Such as use the dissipation 2W of 5W
Power temperature up to 200 DEG C, if heat cannot effectively disperse, not only waste energy consumption, while can also reduce resistor
Service life.
Summary of the invention
In order to solve the above technical problems, the utility model provides a kind of heat radiating type power resistor, can effectively solve
Certainly resistor heat dissipation problem.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of heat radiating type power resistor, including
Substrate is provided with the resistance group that multiple groups are formed with the resistance of several series connection and/or parallel connection, the substrate both ends on the substrate
A lead has been each extended over, has been sequentially connected every group of resistance group by cascade between two leads, between two leads
The equivalent resistance resistance value of formation is identical as the resistance value of required resistor, and substrate is welded on pcb board corresponding position by the lead
On.
Further, the equivalent resistance resistance value formed between two leads is identical as the resistance value of required ceramic resistor.
Further, each resistance is Chip-R.
Further, resistance group described in every group it is much more in parallel resistance.
Further, resistance group described in every group it is in parallel the resistance of same number.
Further, the resistance value of each resistance is identical.
Further, the size of each resistance is identical.
Further, the through-hole for installing resistance is offered on the substrate.
Further, the substrate is by aluminium or ceramic integrated molding.
The beneficial effects of the utility model are: making multiple resistance pass through the shape of series connection and parallel connection using equivalent resistance principle
The total resistance value and general power of resistor required for formula forms, the area for contacting resistance and air increase, are effectively promoted
Heat dissipation effect reduces energy loss, extends the service life of resistor.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of structural schematic diagram of power resistor of this field；
Fig. 2 is a kind of structural schematic diagram of preferred embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below with reference to embodiment and
The technical effect of the design of the utility model, specific structure and generation is clearly and completely described in attached drawing, with sufficiently geographical
Solve the purpose of this utility model, feature and effect.Obviously, described embodiment is that a part of the utility model is implemented
Example, rather than whole embodiments, those skilled in the art's other realities obtained without creative efforts
Example is applied, the range of the utility model protection is belonged to.
Referring to Fig. 2, for a kind of preferably embodiment, a kind of heat radiating type power resistor, including substrate 2, the substrate 2
On be provided with multiple groups with the resistance group 3 that forms of resistance 4 of several series connection and/or parallel connection, the substrate both ends have each extended over
Every group of resistance group 3 is sequentially connected between two leads 2 by cascade, is formed between two leads 2 by one lead 2
Equivalent resistance resistance value is identical as the resistance value of required resistor, and substrate is welded on pcb board corresponding position by the lead 2.
Preferably, in the present embodiment, the resistance of the equivalent resistance resistance value and required ceramic resistor that are formed between two leads 2
It is worth identical.The multiple groups resistance group 3 connected between two leads 2 is formed as an equivalent resistance, passes through equivalent resistance principle
Calculating, first determine the equivalent resistance of every group of resistance group 3, then by multiple groups resistance group 3 want the all-in resistance added up and
It obtains equivalent with the resistance value of required ceramic resistor.
Preferably, in the present embodiment, each resistance 4 is Chip-R.Using Chip-R, because Chip-R has
It is small in size, it is light-weight；Adapt to reflow welding and wave-soldering；Electric performance stablity, high reliablity；Assembly cost is low, and pastes with automatic dress
Equipment matching；High mechanical strength, high frequency characteristics are superior.The reliability of this product is further ensured using Chip-R, and can
The area that each resistance 4 is contacted with air is improved, radiating efficiency is improved.
Preferably, in the present embodiment, more the resistance 4 in parallel of resistance group 3 described in every group.Between two leads 2 with
Cascade be connected with multiple groups it is in parallel the resistance group 3 of multiple resistance 4.Such combination is the best combination of effect,
Be coupled in series multiple groups it is in parallel the resistance groups 3 of multiple resistance 4 electric current in big branch can be shunted, make each
The electric current that single resistance 4 passes through is further reduced, while also reduces the thermal energy of single resistance 4, needed for can also being conveniently combined into
Total resistance value equivalent resistance.
Preferably, in the present embodiment, resistance group 3 described in every group it is in parallel the resistance 4 of same number.Each resistance 4
Resistance value it is all identical.The size of each resistance 4 is identical.Make the number and resistance value one of parallel resistance 4 in every group of resistance group 3
It causes, it is ensured that the size of current of each parallel branch of resistor is consistent in work, and each resistance 4 is made to be in identical work shape
State avoids partial branch electric current excessive, overheats resistance 4, influences its service life, while guaranteeing in the same size and resistance value phase
Together, it also simplifies the processing flow of subsequent product and automated production may be implemented.
Preferably, in the present embodiment, the through-hole for installing resistance 4 is offered on the substrate 1.By opening up through-hole,
Again by the surrounding of resistance 4 by being fixedly welded on substrate 1, the contact area of resistance 4 Yu air can be further increased, is guaranteed
Most effectively radiating mode.
Preferably, in the present embodiment, the substrate 1 is by aluminium or ceramic integrated molding.Using aluminum substrate or ceramic substrate,
It is that ensure that the durability of substrate 1, while also improving function because the two material has good thermal conductivity and heat resistance
The thermal diffusivity of rate resistor.
The above, the only better embodiment of the utility model, but the utility model is not limited to above-mentioned reality
Example is applied, as long as its technical effect for reaching the utility model with any same or similar means, all should belong to the utility model
Protection scope.
Claims (9)
1. a kind of heat radiating type power resistor, it is characterised in that: including substrate (1), the substrate (1) if on be provided with multiple groups with
The resistance group (3) of resistance (4) composition of dry series connection and/or parallel connection, substrate (1) both ends have each extended over a lead
(2), every group of resistance group (3) is sequentially connected by cascade between two leads (2), is formed between two leads (2)
Equivalent resistance resistance value is identical as the resistance value of required resistor, and substrate (1) is welded on pcb board corresponding position by the lead (2)
On.
2. heat radiating type power resistor according to claim 1, it is characterised in that: formed between two leads (2) etc.
It is identical as the resistance value of required ceramic resistor to imitate resistance.
3. heat radiating type power resistor according to claim 1, it is characterised in that: each resistance (4) is patch electricity
Resistance.
4. heat radiating type power resistor according to claim 1, it is characterised in that: resistance group (3) described in every group is in parallel more
Resistance (4).
5. heat radiating type power resistor according to claim 1, it is characterised in that: the parallel connection of resistance group (3) described in every group
The resistance (4) of same number.
6. heat radiating type power resistor according to claim 4, it is characterised in that: the resistance value of each resistance (4)
It is identical.
7. heat radiating type power resistor according to claim 4, it is characterised in that: the size of each resistance (4)
It is identical.
8. heat radiating type power resistor according to claim 1, it is characterised in that: offer and be used on the substrate (1)
The through-hole of resistance (4) is installed.
9. heat radiating type power resistor according to claim 1, it is characterised in that: the substrate (1) is by aluminium or ceramics one
Body chemical conversion type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717329.3U CN208284306U (en) | 2018-05-14 | 2018-05-14 | A kind of heat radiating type power resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717329.3U CN208284306U (en) | 2018-05-14 | 2018-05-14 | A kind of heat radiating type power resistor |
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| Publication Number | Publication Date |
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| CN208284306U true CN208284306U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820717329.3U Active CN208284306U (en) | 2018-05-14 | 2018-05-14 | A kind of heat radiating type power resistor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029060A (en) * | 2019-12-03 | 2020-04-17 | 河南平高通用电气有限公司 | Discharge resistor discharging device and direct current charging pile |
| CN111856095A (en) * | 2020-07-28 | 2020-10-30 | 哈尔滨工业大学 | Pulse high-voltage load resistor module, assembling method and device |
| CN113466581A (en) * | 2021-06-02 | 2021-10-01 | 无锡市航鹄科技有限公司 | Simulation method of simulation equipment and power load quick switching device thereof |
| CN117153508A (en) * | 2023-10-18 | 2023-12-01 | 深圳市正阳兴电子科技有限公司 | Grid type high-power metal resistor |
-
2018
- 2018-05-14 CN CN201820717329.3U patent/CN208284306U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029060A (en) * | 2019-12-03 | 2020-04-17 | 河南平高通用电气有限公司 | Discharge resistor discharging device and direct current charging pile |
| CN111029060B (en) * | 2019-12-03 | 2022-06-14 | 河南平高通用电气有限公司 | Discharge resistor discharging device and direct current charging pile |
| CN111856095A (en) * | 2020-07-28 | 2020-10-30 | 哈尔滨工业大学 | Pulse high-voltage load resistor module, assembling method and device |
| CN111856095B (en) * | 2020-07-28 | 2023-04-11 | 哈尔滨工业大学 | Pulse high-voltage load resistor module, assembling method and device |
| CN113466581A (en) * | 2021-06-02 | 2021-10-01 | 无锡市航鹄科技有限公司 | Simulation method of simulation equipment and power load quick switching device thereof |
| CN117153508A (en) * | 2023-10-18 | 2023-12-01 | 深圳市正阳兴电子科技有限公司 | Grid type high-power metal resistor |
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