Current sharing device suitable for LED load

Abstract

The utility model provides a current-sharing device suitable for an LED load. The current-sharing device comprises an LED chip, a support, a box dam and a barrier layer. The bracket is provided with a positive electrode and a negative electrode which are not communicated with each other; the LED chip is fixed on the bracket and is connected with the positive electrode and the negative electrode; the box dam is arranged on the bracket and surrounds the periphery of the LED chip; and the barrier layer is filled in the box dam to cover the LED chip. According to the utility model, the LED chip is matched with the barrier layer, so that the current-sharing device has the same volt-ampere characteristic as an LED but does not emit light, and meanwhile, the current-sharing device is also provided with the bracket convenient for being connected with a circuit, so that the current-sharing effect is better, the element cost is lower, the element occupied space is smaller, and the usable space is more flexible.

Description

TECHNICAL FIELD

[0001] The utility model relates to current sharing device technical field, concretely relates to a current sharing device suitable for LED load. BACKGROUND

[0002] In the process of lamp design, when LED strings are connected in parallel, the number thereof usually cannot satisfy integral division, and load devices need to be used to balance the voltage drop of branches. Figure 1 As shown in the dashed box, a "diode series resistor" is used in parallel, this method uses the characteristics of diodes to simulate the voltage-current characteristic curve of LEDs as much as possible, this scheme requires higher element cost and larger element space, and higher space requirement. As shown in the dashed box 2, a "resistor" is used in parallel, this method cannot fit the characteristic curve of LEDs because the voltage-current characteristic curve of pure resistance is linear, so the current sharing effect is poor, and it is only suitable for cases with low current sharing requirements. As shown in the following circuit diagram, LED1 / / LED4 / / LED6, LED2 / / LED5 / / LED7 ( / / represents parallel connection), then the branch current flowing through each LED is equal to 1 / 3 of the total current, but LED3 is connected in parallel with the "current sharing load module", in order to make the branch current flowing through LED3 equal to 1 / 3 of the total current, the voltage-current characteristic curve of the "current sharing load module" needs to be consistent with that of LED3, otherwise the branch current is unbalanced, and more components flow through the branch with smaller voltage drop, causing uneven current in each parallel loop. SUMMARY

[0003] In order to overcome the above technical defects, the utility model provides a current sharing device suitable for LED load, which can realize the same voltage-current characteristic as LED but does not emit light.

[0004] In order to solve the above problems, the utility model is implemented according to the following technical scheme:

[0005] A current sharing device suitable for LED load, characterized by comprising: an LED chip, a support, a dam, and a barrier layer.

[0006] The support is provided with a positive electrode and a negative electrode which are not connected to each other.

[0007] The LED chip is fixed on the support and connected with the positive electrode and the negative electrode.

[0008] The dam is arranged on the support and surrounds the periphery of the LED chip.

[0009] The barrier layer is filled in the dam to cover the LED chip.

[0010] As a further improvement of the utility model, still include set up in the insulating part of the other side of the support, the insulating part is provided with a through the insulating fence of support setting, will the support is divided into the positive electrode, the negative electrode of not intercommunication.

[0011] As a further improvement of the utility model, the LED chip is not luminous LED chip.

[0012] As a further improvement of the utility model, the defect density of the LED chip epitaxy is greater than or equal to 50%.

[0013] As a further improvement of the utility model, the barrier layer is encapsulation glue.

[0014] As a further improvement of the utility model, the LED chip is one of UV chip, blue-green light chip, red-yellow light chip, IR chip.

[0015] As a further improvement of the utility model, the barrier layer is light shielding layer.

[0016] As a further improvement of the utility model, the light shielding layer includes: light absorbing material and light blocking material.

[0017] As a further improvement of the utility model, the light shielding layer includes: black powder and transparent glue.

[0018] As a further improvement of the utility model, the light shielding layer includes: non-transparency plastic, glass, metal.

[0019] Compared with prior art, the utility model provides beneficial effects as follows: utilize LED chip, cooperate barrier layer, make that current sharing device can realize with LED has same volt-ampere characteristic but does not emit light, still set up the support convenient for connecting with circuit, through the current sharing device of the utility model, not only current sharing effect is more excellent, its element cost is lower, element occupies space is smaller, can use space is more flexible. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural schematic diagram of prior art (use "diode series resistance" parallel connection);

[0021] Figure 2 It is the structural schematic diagram of prior art (use "resistance" parallel connection);

[0022] Figure 3 It is the structural schematic diagram of the current sharing device of the utility model in use state;

[0023] Figure 4 It is the structural schematic diagram of the current sharing device of embodiment 1;

[0024] Figure 5 Another structural schematic view of the current sharing device described in Embodiment 1;

[0025] Figure 6 A structural schematic view of the current sharing device described in Embodiment 2;

[0026] Figure 7 Another structural schematic view of the current sharing device described in Embodiment 1.

[0027] Explanation of reference signs:

[0028] 1. A current sharing device.

[0029] Embodiment 1: 101, LED chip; 102, support; 1021, positive electrode; 1022, negative electrode; 103, dam; 104, barrier layer; 105, lead wire; 106, insulating part; 1061, insulating fence.

[0030] Embodiment 2: 201, LED chip; 2011, positive electrode; 2012, negative electrode; 202, support; 203, dam; 204, barrier layer; 205, lead wire; 206, insulating part; 2061, insulating fence. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described here are only used to explain and illustrate the present application, and are not used to limit the present application.

[0032] Embodiment 1

[0033] The present embodiment provides a current sharing device suitable for LED load, as shown in Figures 3-5 The current sharing device includes: LED chip, support, dam, barrier layer; the support is provided with positive electrode and negative electrode which are not in communication with each other; the LED chip is fixed on the support and connected with the positive electrode and the negative electrode; the dam is arranged on the support and surrounds the periphery of the LED chip; and the barrier layer is filled in the dam to cover the LED chip.

[0034] The present embodiment includes an insulating part arranged on the other side of the support, and the insulating part is provided with an insulating fence penetrating through the support to divide the support into positive electrode and negative electrode which are not in communication with each other. Specifically, the support is a metal support, one side of the support is provided with LED chip, dam and barrier layer, and the other side of the support is provided with insulating part. In order to facilitate use, the support is bent towards the insulating part to form positive electrode and negative electrode, and the insulating part insulates the positive electrode and the negative electrode, and at the same time, the insulating part can also support the support.

[0035] In order to meet the requirement of part light emission, the LED chip of the present embodiment is a non-emitting LED chip, and the barrier layer is an encapsulating glue.

[0036] The defect density of the LED chip epitaxy is greater than or equal to 50%, and in the process of electrifying, the electron and hole do not generate light after recombination, only heat is generated; therefore, the volt-ampere characteristic curve of the current sharing device of the embodiment is the same as that of the LED.

[0037] Embodiment 2

[0038] The embodiment provides another current sharing device suitable for an LED load, as shown in Figure 3 and Figure 6 , Figure 7 The current sharing device comprises an LED chip, a support, a dam, and a blocking layer. The support is provided with a positive electrode and a negative electrode which are not in communication with each other. The LED chip is fixed on the support and connected with the positive electrode and the negative electrode. The dam is arranged on the support and surrounds the periphery of the LED chip. The blocking layer is filled in the dam to cover the LED chip.

[0039] The embodiment comprises an insulating part arranged on the other side of the support. The insulating part is provided with an insulating fence penetrating through the support, so as to divide the support into the positive electrode and the negative electrode which are not in communication with each other. Specifically, the support is a metal support. One side of the support is provided with the LED chip, the dam, and the blocking layer. The other side of the support is provided with the insulating part. In order to facilitate use, the support is bent towards the insulating part to form the positive electrode and the negative electrode. The insulating part insulates the positive electrode and the negative electrode. Meanwhile, the insulating part can also support the support.

[0040] In order to meet the requirement of light emission, the LED chip is one of a UV chip, a blue-green light chip, a red-yellow light chip, and an IR chip. Meanwhile, the blocking layer is a light shielding layer.

[0041] Preferably, the light shielding layer comprises a light absorbing material and a light blocking material.

[0042] Preferably, the light shielding layer comprises black powder and transparent glue.

[0043] The current sharing device of the embodiment does not generate light flux in the process of use. The volt-ampere characteristic curve of the current sharing device is the same as that of the LED.

[0044] The above are only the preferred embodiments of the present application, and are not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A current sharing device for LED loads, characterized in that, The application relates to an LED chip, a support, a dam, and a blocking layer. The support is provided with a positive electrode and a negative electrode which are not connected with each other. The LED chip is fixed on one side of the support and is connected with the positive electrode and the negative electrode. The dam is arranged on the support and surrounds the periphery of the LED chip. The blocking layer is filled in the dam to cover the LED chip. An insulating part is arranged on the other side of the support, the insulating part is provided with an insulating fence which penetrates the support and divides the support into the positive electrode and the negative electrode which are not connected with each other.

2. The current sharing device of claim 1, wherein, The LED chip is a non-emitting LED chip.

3. The current sharing device for LED loads of claim 1, wherein, The defect density of the epitaxy of the LED chip is greater than or equal to 50%.

4. The current sharing device for LED loads of claim 3, wherein, The blocking layer is encapsulating glue.

5. The current sharing device for LED loads of claim 3, wherein, The LED chip is one of a UV chip, a blue-green light chip, a red-yellow light chip, and an IR chip.

6. The current sharing device for LED loads of claim 1, wherein, The blocking layer is a light shielding layer.

7. The current sharing device for LED loads of claim 6, wherein, The light shielding layer comprises light-absorbing material and light-blocking material.

8. The current sharing device for LED loads according to claim 7, wherein, The light shielding layer comprises black powder and transparent glue.

9. The current sharing device for LED loads of claim 7, wherein, The light shielding layer comprises non-transparent plastic, glass, and metal.

10. The current sharing device for LED loads of claim 7, wherein, ​

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