Relay module of solar lithium battery and solar street lamp

Abstract

The utility model provides a relay module of a solar lithium battery and a solar street lamp. The relay module comprises a photoelectric isolation detection circuit and a relay driving circuit. The first end of the optoelectronic isolation detection circuit is connected with the anode of the main light source, the second end of the optoelectronic isolation detection circuit is connected with the cathode of the main light source, and the third end of the optoelectronic isolation detection circuit is connected with the first end of the relay driving circuit; the fourth end of the photoelectric isolation detection circuit is connected with the second end of the relay driving circuit; the optoelectronic isolation detection circuit is used for detecting the main light source state; the photoelectric isolation detection circuit comprises a first resistor, a second resistor, a first capacitor and a state detection module; the third end of the relay driving circuit is connected with the anode of the auxiliary light source; the fourth end of the relay driving circuit is connected with the cathode of the auxiliary light source; and the relay driving circuit is used for driving the auxiliary light source to be conducted when the main light source is conducted and closing the auxiliary light source when the main light source is closed. The main light source and the auxiliary light source can be output simultaneously.

Description

Technical Field

[0001] The present application belongs to the field of harvester control technology, and in particular, relates to a solar lithium battery relay module and a solar street light. Background Art

[0002] Conventional solar lithium batteries can only output one light source, and the output mode is boost mode. Some applications need to output two light sources at the same time, one of which is the main light source for lighting, and the other is the auxiliary light source for driving loads such as light strips, point light sources, and Chinese knots. At this time, conventional solar lithium batteries cannot meet such requirements. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the embodiments of the present application provide a solar lithium battery relay module and a solar street light, which can output main and auxiliary light sources at the same time.

[0004] This application is implemented through the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a relay module for a solar lithium battery, comprising: a photoelectric isolation detection circuit and a relay drive circuit;

[0006] The first end of the photoelectric isolation detection circuit is connected to the positive electrode of the main light source, the second end of the photoelectric isolation detection circuit is connected to the negative electrode of the main light source, the third end of the photoelectric isolation detection circuit is connected to the first end of the relay drive circuit; the fourth end of the photoelectric isolation detection circuit is connected to the second end of the relay drive circuit; the photoelectric isolation detection circuit is used to detect the state of the main light source;

[0007] The photoelectric isolation detection circuit includes a first resistor, a second resistor, a first capacitor and a state detection module; the first end of the first resistor is connected to the first end of the photoelectric isolation detection circuit, the second end of the first resistor is respectively connected to the first end of the second resistor, the first end of the first capacitor and the first end of the state detection module; the second end of the second resistor is respectively connected to the second end of the first capacitor and the second end of the state detection module; the third end of the state detection module is connected to the third end of the photoelectric isolation detection circuit; the fourth end of the state detection module is connected to the fourth end of the photoelectric isolation detection circuit;

[0008] The third end of the relay drive circuit is connected to the positive pole of the auxiliary light source, and the fourth end of the relay drive circuit is connected to the negative pole of the auxiliary light source; the relay drive circuit is used to drive the auxiliary light source to turn on when the main light source is on, and to turn off the auxiliary light source when the main light source is off.

[0009] In one embodiment, the state detection module includes an optical coupler.

[0010] In one embodiment, the relay driving circuit includes a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a relay, a first diode, a second diode, a first transistor and a battery;

[0011] The first end of the third resistor is connected to the first end of the relay drive circuit; the second end of the third resistor is respectively connected to the first end of the relay, the second end of the first diode, the first power supply and the second end of the second diode; the second end of the relay is respectively connected to the first end of the first diode and the C end of the first transistor; the first end of the second diode is respectively connected to the positive electrode of the battery, the working power supply and the third end of the relay drive circuit; the E end of the first transistor is respectively connected to the second end of the second capacitor, the second end of the fifth resistor, the negative electrode of the battery and the fourth end of the relay drive circuit; the B end of the first transistor is respectively connected to the second end of the fourth resistor, the first end of the second capacitor and the sixth end of the relay drive circuit; the first end of the fourth resistor is respectively connected to the first end of the fifth resistor, the second end of the relay drive circuit and the fifth end of the relay drive circuit.

[0012] In one embodiment, the relay module of the solar lithium battery further includes an output short circuit protection circuit and an overvoltage protection circuit;

[0013] The first end of the output short circuit protection circuit is connected to the fifth end of the relay drive circuit, and the second end of the output short circuit protection circuit is connected to the sixth end of the relay drive circuit; the third end of the output short circuit protection circuit is connected to the first end of the overvoltage protection circuit; the fourth end of the output short circuit protection circuit is the output end of the output short circuit protection circuit.

[0014] In one embodiment, the output short circuit protection circuit includes a sixth resistor, a third capacitor, a third diode and a first comparator;

[0015] The first end of the output short-circuit protection circuit is connected to the negative polarity end of the first comparator; the positive polarity end of the first comparator is respectively connected to the third end of the output short-circuit protection circuit, the first end of the sixth resistor, the first end of the third diode and the first end of the third capacitor; the output end of the first comparator is connected to the second end of the output short-circuit protection circuit; the positive pole of the power supply of the first comparator is respectively connected to the second power supply and the second end of the sixth resistor; and the negative pole of the power supply of the first comparator is respectively connected to the second end of the third capacitor.

[0016] In one embodiment, the overvoltage protection circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a voltage regulator tube and a second comparator;

[0017] The first end of the seventh resistor is respectively connected to the third power supply and the first end of the eighth resistor; the second end of the seventh resistor is respectively connected to the second end of the voltage regulator and the positive polarity end of the second comparator; the first end of the voltage regulator and the second end of the ninth resistor are both grounded; the first end of the ninth resistor is respectively connected to the negative polarity end of the second comparator and the second end of the eighth resistor; the output end of the second comparator is connected to the first end of the overvoltage protection circuit.

[0018] In one embodiment, the model of the optocoupler includes PC814.

[0019] In one embodiment, a switch is provided between the positive electrode of the battery and the third terminal of the relay drive circuit.

[0020] In the second aspect, an embodiment of the present application provides a solar street light, including a main light source, an auxiliary light source and a solar lithium battery; the solar lithium battery supplies power to the main light source and the auxiliary light source at the same time; the solar lithium battery is provided with a relay module like the solar lithium battery of the first aspect.

[0021] In one embodiment, the solar street light further includes a lamp pole and a customized logo frame; the customized logo frame is embedded in the lamp pole for freely placing the customized logo.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0023] The embodiment of the present application detects the state of the main light source through a photoelectric isolation detection circuit. When the main light source is turned on, a DC voltage of approximately 30-35V is generated. The state detection module is driven by current limiting through the first resistor. The second resistor and the first capacitor ensure the stability of the input end of the state detection module and remove instantaneous interference, so that when the main light source is turned on, the relay drive circuit turns on the auxiliary light source accordingly, and when the main light source is turned off, the relay drive circuit turns off the auxiliary light source accordingly.

[0024] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a structural schematic diagram of a relay module of a solar lithium battery provided in one embodiment of the present application;

[0027] Figure 2It is a schematic diagram of the structure of a solar street light provided by an embodiment of the present application;

[0028] Figure 3 It is an enlarged schematic diagram of the structure of a solar street light provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0030] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0031] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] As used in the present application specification and the appended claims, the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0034] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0035] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] Figure 1 1 is a schematic diagram of the structure of a relay module of a solar lithium battery provided in an embodiment of the present application. The relay module of the solar lithium battery includes a photoelectric isolation detection circuit 100 and a relay drive circuit 200 .

[0037] The first end of the photoelectric isolation detection circuit 100 is connected to the positive pole of the main light source, the second end of the photoelectric isolation detection circuit 100 is connected to the negative pole of the main light source, the third end of the photoelectric isolation detection circuit 100 is connected to the first end of the relay drive circuit 200; the fourth end of the photoelectric isolation detection circuit 100 is connected to the second end of the relay drive circuit 200; the photoelectric isolation detection circuit 100 is used to detect the state of the main light source.

[0038] The photoelectric isolation detection circuit 100 includes a first resistor R1, a second resistor R2, a first capacitor C1 and a state detection module U1; the first end of the first resistor R1 is connected to the first end of the photoelectric isolation detection circuit 100, and the second end of the first resistor R1 is respectively connected to the first end of the second resistor R2, the first end of the first capacitor C1 and the first end of the state detection module U1; the second end of the second resistor R2 is respectively connected to the second end of the first capacitor C1 and the second end of the state detection module U1; the third end of the state detection module U1 is connected to the third end of the photoelectric isolation detection circuit 100; the fourth end of the state detection module U1 is connected to the fourth end of the photoelectric isolation detection circuit 100.

[0039] Exemplarily, the photoelectric isolation detection circuit 100 is used as a main light source voltage detection circuit. When the main light source is turned on, it will generate a DC voltage of about 30-35V. The state detection module U1 is driven by current limiting through the first resistor R1. The second resistor R2 and the first capacitor C1 are used to ensure the stability of the input end of the driving state detection module U1 and eliminate instantaneous interference.

[0040] The third end of the relay driving circuit 200 is connected to the positive pole of the auxiliary light source, and the fourth end of the relay driving circuit 200 is connected to the negative pole of the auxiliary light source; the relay driving circuit 200 is used to drive the auxiliary light source to turn on when the main light source is on, and to turn off the auxiliary light source when the main light source is off.

[0041] In this embodiment, the state of the main light source is detected by the photoelectric isolation detection circuit 100. When the main light source is turned on, a DC voltage of about 30-35V is generated. The state detection module U1 is driven by current limiting through the first resistor R1. The second resistor R2 and the first capacitor C1 ensure the stability of the input end of the state detection module U1 and remove instantaneous interference. Therefore, when the main light source is turned on, the relay drive circuit 200 turns on the auxiliary light source accordingly, and when the main light source is turned off, the relay drive circuit 200 turns off the auxiliary light source accordingly.

[0042] In one embodiment, the relay driving circuit 200 includes a third resistor R3, a fourth resistor R4, a fifth resistor R5, a second capacitor C2, a relay J, a first diode D1, a second diode D2, a first transistor V1 and a battery E.

[0043] The first end of the third resistor R3 is connected to the first end of the relay J drive circuit 200; the second end of the third resistor R3 is respectively connected to the first end of the relay J, the second end of the first diode D1, the first power supply VDD1 and the second end of the second diode D2; the second end of the relay J is respectively connected to the first end of the first diode D1 and the C end of the first transistor V1; the first end of the second diode D2 is respectively connected to the positive electrode of the battery E, the working power supply VCC and the third end of the relay J drive circuit 200; the E end of the first transistor V1 is respectively connected to the second end of the second capacitor C2, the second end of the fifth resistor R5, the negative electrode of the battery E and the fourth end of the relay J drive circuit 200; the B end of the first transistor V1 is respectively connected to the second end of the fourth resistor R4, the first end of the second capacitor C2 and the sixth end of the relay J drive circuit 200; the first end of the fourth resistor R4 is respectively connected to the first end of the fifth resistor R5, the second end of the relay J drive circuit 200 and the fifth end of the relay J drive circuit 200.

[0044] In one embodiment, the state detection module U1 includes an optical coupler. When an electrical signal is sent to the input end of the optical coupler, the light-emitting diode emits light through the current, the photosensitive element generates current after being illuminated by light, the circuit is turned on, and the relay J drive circuit 200 drives to turn on the auxiliary light source; when there is no signal at the input end, the light-emitting diode does not light up, the photosensitive diode is cut off, the circuit is blocked, and the electrical drive circuit does not turn on.

[0045] In one embodiment, the relay J module of the solar lithium battery E further includes an output short circuit protection circuit 300 and an overvoltage protection circuit 400 .

[0046] The first end of the output short circuit protection circuit 300 is connected to the fifth end of the relay J drive circuit 200, and the second end of the output short circuit protection circuit 300 is connected to the sixth end of the relay J drive circuit 200; the third end of the output short circuit protection circuit 300 is connected to the first end of the overvoltage protection circuit 400; the fourth end of the output short circuit protection circuit 300 is the output end of the output short circuit protection circuit 300.

[0047] In this embodiment, if the power supply voltage of the relay J module of the solar lithium battery E is higher than the voltage of the auxiliary light source, the overvoltage protection circuit 400 will turn off the auxiliary light source; if the auxiliary light source is short-circuited, the output short-circuit protection circuit 300 will turn off the auxiliary light source without affecting the output of the main light source lighting.

[0048] In one embodiment, the output short circuit protection circuit 300 includes a sixth resistor R6, a third capacitor C3, a third diode D3 and a first comparator U2A.

[0049] The first end of the output short-circuit protection circuit 300 is connected to the negative polarity end of the first comparator U2A; the positive polarity end of the first comparator U2A is respectively connected to the third end of the output short-circuit protection circuit 300, the first end of the sixth resistor R6, the first end of the third diode D3 and the first end of the third capacitor C3; the output end of the first comparator U2A is connected to the second end of the output short-circuit protection circuit 300; the positive power supply electrode of the first comparator U2A is respectively connected to the second power supply VDD2 and the second end of the sixth resistor R6; the negative power supply electrode of the first comparator U2A is respectively connected to the second end of the third capacitor C3.

[0050] Exemplarily, the sixth resistor R6 provides a pull-up potential for the positive terminal of the first comparator U2A, and the third capacitor C3 is used to ensure that the voltage of the positive terminal of the first comparator U2A is stable. If the auxiliary light source is short-circuited, the third diode D3 is used for clamping, and the positive terminal of the first comparator U2A is pulled down to 0-0.7V, thereby turning off the relay J to turn off the auxiliary light source.

[0051] In one embodiment, the overvoltage protection circuit 400 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a voltage regulator VD, and a second comparator U2B.

[0052] The first end of the seventh resistor R7 is respectively connected to the third power supply VDD3 and the first end of the eighth resistor R8; the second end of the seventh resistor R7 is respectively connected to the second end of the voltage regulator tube VD and the positive polarity end of the second comparator U2B; the first end of the voltage regulator tube VD and the second end of the ninth resistor R9 are both grounded; the first end of the ninth resistor R9 is respectively connected to the negative polarity end of the second comparator U2B and the second end of the eighth resistor R8; the output end of the second comparator U2B is connected to the first end of the overvoltage protection circuit 400.

[0053] Exemplarily, the seventh resistor R7 and the voltage regulator VD provide a reference voltage for the positive polarity end of the second comparator U2B, and the eighth resistor R8 and the ninth resistor R9 divide the voltage to obtain the power supply voltage. When the power supply voltage is higher than the voltage at the positive polarity end of the second comparator U2B, the output of the second comparator U2B is 0V, and the subsequent circuit will turn off the relay J, thereby turning off the auxiliary light source.

[0054] In one embodiment, the model of the optocoupler includes PC814.

[0055] In one embodiment, a switch is provided between the positive electrode of the battery E and the third terminal of the relay J driving circuit 200. The auxiliary light source can be forcibly cut off by the switch.

[0056] It can be seen that the utility model detects the state of the main light source through the photoelectric isolation detection circuit 100. When the main light source is lit, a DC voltage of about 30-35V will be generated. The state detection module U1 is driven by the current limiting of the first resistor R1. The second resistor R2 and the first capacitor C1 ensure that the input end of the state detection module U1 is stable, and the instantaneous interference is removed so that when the main light source is lit, the relay J drive circuit 200 turns on the auxiliary light source accordingly, and when the main light source is turned off, the relay J drive circuit 200 turns off the auxiliary light source accordingly. The main light source is also short-circuited through the output short-circuit protection circuit 300, and the main light source is protected from overvoltage by the overvoltage protection circuit 400. If the power supply voltage to the module is higher than the voltage of the auxiliary light source, the auxiliary light source is turned off. If the auxiliary light source is short-circuited, the auxiliary light source will also be turned off, and the output of the main light source lighting will not be affected.

[0057] See also Figure 2 An embodiment of the present application provides a solar street light, including a main light source, an auxiliary light source and a solar lithium battery; the solar lithium battery supplies power to the main light source and the auxiliary light source at the same time; the solar lithium battery is provided with a relay module of the solar lithium battery in the above embodiment.

[0058] Among them, the main light source and the auxiliary light source can be specifically set according to the specific product shape, which is not shown in the figure here.

[0059] In one embodiment, the solar street light further comprises a lamp post and a customized logo frame; the customized logo frame is embedded in the lamp post and is used to freely place the customized logo, such as Figure 3 shown.

[0060] Exemplarily, the solar street light also includes components such as a lamp holder, a lamp frame, etc. A customized identification frame can also be set on the lamp holder.

[0061] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A relay module for a solar lithium battery, characterized in that: include: Photoelectric isolation detection circuit and relay drive circuit; The first end of the photoelectric isolation detection circuit is connected to the positive electrode of the main light source, the second end of the photoelectric isolation detection circuit is connected to the negative electrode of the main light source, the third end of the photoelectric isolation detection circuit is connected to the first end of the relay drive circuit; the fourth end of the photoelectric isolation detection circuit is connected to the second end of the relay drive circuit; the photoelectric isolation detection circuit is used to detect the state of the main light source; The photoelectric isolation detection circuit includes a first resistor, a second resistor, a first capacitor and a state detection module; the first end of the first resistor is connected to the first end of the photoelectric isolation detection circuit, and the second end of the first resistor is respectively connected to the first end of the second resistor, the first end of the first capacitor and the first end of the state detection module; the second end of the second resistor is respectively connected to the second end of the first capacitor and the second end of the state detection module; the third end of the state detection module is connected to the third end of the photoelectric isolation detection circuit; the fourth end of the state detection module is connected to the fourth end of the photoelectric isolation detection circuit; The third end of the relay drive circuit is connected to the positive pole of the auxiliary light source, and the fourth end of the relay drive circuit is connected to the negative pole of the auxiliary light source; the relay drive circuit is used to drive the auxiliary light source to be turned on when the main light source is on, and to turn off the auxiliary light source when the main light source is off.

2. The solar lithium battery relay module according to claim 1, characterized in that: The state detection module includes an optical coupler.

3. The solar lithium battery relay module according to claim 1, characterized in that: The relay driving circuit includes a third resistor, a fourth resistor, a fifth resistor, a second capacitor, a relay, a first diode, a second diode, a first transistor and a battery; The first end of the third resistor is connected to the first end of the relay drive circuit; the second end of the third resistor is respectively connected to the first end of the relay, the second end of the first diode, the first power supply and the second end of the second diode; the second end of the relay is respectively connected to the first end of the first diode and the C end of the first transistor; the first end of the second diode is respectively connected to the positive electrode of the battery, the working power supply and the third end of the relay drive circuit; the E end of the first transistor is respectively connected to the second end of the second capacitor, the second end of the fifth resistor, the negative electrode of the battery and the fourth end of the relay drive circuit; the B end of the first transistor is respectively connected to the second end of the fourth resistor, the first end of the second capacitor and the sixth end of the relay drive circuit; the first end of the fourth resistor is respectively connected to the first end of the fifth resistor, the second end of the relay drive circuit and the fifth end of the relay drive circuit.

4. The solar lithium battery relay module according to claim 1, characterized in that: The solar lithium battery relay module also includes an output short circuit protection circuit and an overvoltage protection circuit; The first end of the output short circuit protection circuit is connected to the fifth end of the relay drive circuit, and the second end of the output short circuit protection circuit is connected to the sixth end of the relay drive circuit; the third end of the output short circuit protection circuit is connected to the first end of the overvoltage protection circuit; the fourth end of the output short circuit protection circuit is the output end of the output short circuit protection circuit.

5. The solar lithium battery relay module as claimed in claim 4, characterized in that: The output short circuit protection circuit comprises a sixth resistor, a third capacitor, a third diode and a first comparator; The first end of the output short-circuit protection circuit is connected to the negative polarity end of the first comparator; the positive polarity end of the first comparator is respectively connected to the third end of the output short-circuit protection circuit, the first end of the sixth resistor, the first end of the third diode and the first end of the third capacitor; the output end of the first comparator is connected to the second end of the output short-circuit protection circuit; the positive pole of the power supply of the first comparator is respectively connected to the second power supply and the second end of the sixth resistor; and the negative pole of the power supply of the first comparator is respectively connected to the second end of the third capacitor.

6. The solar lithium battery relay module according to claim 4, characterized in that: The overvoltage protection circuit includes a seventh resistor, an eighth resistor, a ninth resistor, a voltage regulator tube and a second comparator; The first end of the seventh resistor is respectively connected to the third power supply and the first end of the eighth resistor; the second end of the seventh resistor is respectively connected to the second end of the voltage regulator and the positive polarity end of the second comparator; the first end of the voltage regulator and the second end of the ninth resistor are both grounded; the first end of the ninth resistor is respectively connected to the negative polarity end of the second comparator and the second end of the eighth resistor; the output end of the second comparator is connected to the first end of the overvoltage protection circuit.

7. The solar lithium battery relay module according to claim 2, characterized in that: Models of the optocoupler include PC814.

8. The solar lithium battery relay module as claimed in claim 3, characterized in that: A switch is provided between the positive electrode of the battery and the third end of the relay drive circuit.

9. A solar street light, characterized in that: It comprises a main light source, an auxiliary light source and a solar lithium battery; the solar lithium battery supplies power to the main light source and the auxiliary light source at the same time; the solar lithium battery is provided with a solar lithium battery relay module as claimed in any one of claims 1 to 8.

10. The solar street light according to claim 9, characterized in that: It also includes a lamp pole and a customized logo frame; the customized logo frame is embedded in the lamp pole and is used for freely placing the customized logo.

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