An engine circuit with a signal line engine clamp lithium battery starting power supply

Abstract

The utility model relates to the technical field of lithium battery engine starting, and specifically to an engine circuit method of a lithium battery starting power supply with a signal line engine clamp. The utility model comprises an engine current switch part, on which a switch relay that can be controlled to open and close based on a control signal is provided, and the switch relay is connected to the first end of the power supply part; a first clamp, the first clamp is connected to a protection part and then connected to the normally open contact of the switch relay; a second clamp, the second clamp is connected to the second end of the power supply part, and a signal line is provided on the first clamp and / or the second clamp; a control part, connected to the signal line to receive a state signal, and the controlled end of the engine current switch part is connected to the control part to receive the control signal output by the control part.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery engine starting, in particular to an engine circuit method of a lithium battery starting power supply with a signal line engine clip. Background Art

[0002] The lithium battery engine starting clip cables sold on the market are generally separate and placed separately from the product. When using the engine to start the engine, the clip cable needs to be plugged into the product's engine socket. This method has the following disadvantages: 1) Due to the limitations of the male plug and female socket connected to the engine, the contact resistance of the socket connection is increased, and the engine discharge current is generally not large; it also increases the material cost of this set of male and female sockets; 2) The female socket is generally installed on the product body, and there is a socket plug on the socket to prevent external short circuit; however, it cannot be guaranteed that if the plug is not tightly covered and falls off, the female socket is exposed and there is a risk of short circuit;

[0003] Some starting lithium batteries or lead-acid batteries on the market use terminal blocks and are connected to the started car through engine clamp wires, but the separated wires are easy to lose. Utility Model Content

[0004] The purpose of the utility model is to provide an engine circuit with a signal line engine clamp lithium battery starting power supply to solve the above technical problems;

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] An engine circuit with a signal line engine clamp lithium battery starting power supply, comprising:

[0007] An engine current switch unit, wherein the engine current switch unit is provided with a switch relay that can be controlled to open and close based on a control signal, and the switch relay is connected to a first end of the power supply unit;

[0008] A first clip, the first clip being connected to a protection part and then connected to a normally open contact of the switch relay;

[0009] a second clip, the second clip being connected to a second end of the power supply unit, and a signal line being provided on the first clip and / or the second clip;

[0010] The control unit is connected to the signal line to receive the state signal, and the controlled end of the engine current switch unit is connected to the control unit to receive the control signal output by the control unit.

[0011] Preferably, the first clamp is provided with:

[0012] A first wire, wherein a first end of the first wire is connected to a first side clamping tooth of the first clamp, and a second end of the first wire is connected to a second end of the protecting portion;

[0013] A first signal line, wherein a first end of the first signal line is connected to the second side clamping tooth of the first clamp, and a second end of the first signal line is connected to the first input end of the control unit;

[0014] A corresponding first clamp state signal is generated based on the first side clamping teeth and the second side clamping teeth of the first clamp contacting or separating the second end of the first signal line, and a corresponding first wiring state signal is generated based on the first clamp and the external starting battery contacting or separating the second end of the first signal line.

[0015] Preferably, the second clamp is provided with:

[0016] a second wire, wherein a first end of the second wire is connected to a first side clamping tooth of the second clamp, and a second end of the second wire is connected to a positive electrode of the power supply unit;

[0017] a second signal line, wherein a first end of the second signal line is connected to the second side clamping tooth of the second clamp, and a second end of the second signal line is connected to the second input end of the control unit;

[0018] A corresponding second clamp state signal is generated based on the first side clamping teeth and the second side clamping teeth of the second clamp contacting or separating the second end of the second signal line, and a corresponding second wiring state signal is generated based on the second clamp and the external starting battery contacting or separating the second end of the second signal line.

[0019] Preferably, the signal line includes the first signal line and the second signal line.

[0020] Preferably, the first clip and the second clip are respectively provided with marks for distinguishing each other.

[0021] Preferably, the engine current switch unit includes:

[0022] A first transistor, wherein a base of the first transistor is connected to a first resistor and then connected to the control unit to receive the control signal, a collector of the first transistor is connected to a first coil pin of the switch relay, and an emitter of the first transistor is grounded;

[0023] a second resistor, wherein a first end of the second resistor is connected to the base of the first transistor, and a second end of the second resistor is connected to the emitter of the first transistor;

[0024] A first diode, wherein the anode of the first diode is connected to the collector of the first transistor, and the cathode of the first diode is connected to the second coil pin of the switch relay.

[0025] Preferably, the power supply unit comprises:

[0026] a fuse, a first end of the fuse being connected to the second clip;

[0027] A lithium battery pack, wherein the negative electrode of the lithium battery pack is connected to the second end of the fuse, and the positive electrode of the lithium battery pack is connected to the common contact of the switch relay.

[0028] Preferably, the protection unit includes a plurality of anti-reverse charging diodes connected in parallel, the positive electrodes of the anti-reverse charging diodes are connected to the normally open contacts of the switch relay, and the negative electrodes of the anti-reverse charging diodes are connected to the first clip.

[0029] Preferably, the control unit is further provided with a sampling resistor, and the sampling resistor is connected to the normally open contact of the switch relay.

[0030] Preferably, the engine current switch unit, the power supply unit and the protection unit are all arranged in a device body, and the first clip and the second clip are arranged on the outside of the device body.

[0031] The beneficial effects of the utility model are as follows: due to the adoption of the above technical scheme, the utility model adopts an engine clamp with a signal line, which is integrated with the entire engine circuit, fully ensuring the reliability of various safety protection functions such as reverse connection and short circuit during engine operation; reducing the use of traditional male and female socket connectors; eliminating the loss of traditional separated engine clamp lines, and improving cost performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the engine circuit in the embodiment of the utility model. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] An engine circuit with a signal line engine clamp lithium battery starting power supply, such as Figure 1 As shown, including,

[0037] The engine current switch unit 3 is provided with a switch relay K which can be controlled to open and close based on a control signal, and the switch relay K is connected to a first end of the power supply unit 4;

[0038] A first clamp 1, the first clamp 1 is connected to a protection part 5 and then connected to a normally open contact of a switch relay K;

[0039] A second clip 2, the second clip 2 is connected to a second end of the power supply unit 4, and a signal line is provided on the first clip 1 and / or the second clip 2;

[0040] The control unit (not shown in the figure) is connected to the signal line to receive the state signal, and the controlled end of the engine current switch unit 3 is connected to the control unit to receive the control signal output by the control unit.

[0041] Specifically, the utility model adopts an engine clamp with a signal line, which is integrated with the entire engine circuit, fully ensuring the reliability of various safety protection functions such as reverse connection and short circuit during engine operation; reducing the use of traditional male and female socket connectors; and eliminating the loss of traditional separated engine clamp lines, thereby improving cost performance.

[0042] The second clip 2 is connected to the fuse F1 in series through the second wire 21 and connected to the negative electrode of the lithium battery pack 41 inside the product; the first clip 1 is connected to the protection part 5 and the engine current switch part 3 through the first wire 11, and then connected to the positive electrode of the internal lithium battery pack 41; forming the main circuit of the entire engine starting module;

[0043] The first clamp 1 and / or the second clamp 2 are also provided with a signal line. The first signal line 12 and the second signal line 22 can be provided at the same time, or the signal line can be provided on one of the first clamp 1 or the second clamp 2. The signal lines correspond to the state of the clamp and the state of the clamp and the external terminal, respectively, and are connected to the control unit to output a state signal. The control unit is provided with a processor, which can make a comprehensive judgment based on the state signal and then output a control signal to control the on and off of the switch relay K; at the same time, the voltage of the starting battery 6 of the car can be directly and accurately collected through the signal line to avoid the voltage drop caused by the large current flowing through the engine wire and the voltage sampling error; the first signal line 12 can be contained in the first wire 11, and the second signal line 22 can be contained in the second wire 21. These two wires are specially customized.

[0044] In a preferred embodiment, the first clamp 1 is provided with:

[0045] A first wire 11, wherein a first end of the first wire 11 is connected to a first side clamping tooth of the first clamp 1, and a second end of the first wire 11 is connected to a second end of the protecting portion 5;

[0046] A first signal line 12, a first end of the first signal line 12 is connected to the second side clamping tooth of the first clamp 1, and a second end of the first signal line 12 is connected to the first input end of the control unit;

[0047] A corresponding first clamp 1 state signal is generated based on the first side clamping teeth and the second side clamping teeth of the first clamp 1 contacting or separating the second end of the first signal line 12 , and a corresponding first wiring state signal is generated based on the first clamp 1 and the external starting battery 6 contacting or separating the second end of the first signal line 12 .

[0048] Specifically, the first signal line 12 corresponds to the state of the first clamp 1 and the state of the first clamp 1 and the positive terminal 61, including:

[0049] The first wire 11 and the first signal wire 12 are connected, and the voltage is high: the first clamp 1 has been clamped on the positive terminal 61 of the starter battery 6;

[0050] The first wire 11 and the first signal wire 12 are conducting, and the voltage is 0: the first clamp 1 is not clamped on the positive terminal 61 of the starter battery 6, and the clamping teeth on both sides of the first clamp 1 are closed;

[0051] The first wire 11 and the first signal wire 12 are not conducting, the voltage of the first wire 11 is high, and the voltage of the first signal wire 12 is 0: a) The switch relay K is damaged, the relay contacts are sintered together and cannot be separated, and the switch function fails; b) The user does not clamp the positive terminal 61 of the starter battery 6 correctly, and the user needs to be reminded to clamp it again;

[0052] The first wire 11 and the first signal wire 12 are not conducting, the voltage of the first wire 11 is 0, and the voltage of the first signal wire 12 is high: a) The user does not clamp the positive terminal 61 of the starter battery 6 correctly, and the user needs to be reminded to clamp it again; b) The switch relay K is damaged, the relay contact has burned out, and the switch function fails;

[0053] The first conductive wire 11 and the first signal wire 12 are changed from non-conductive to conductive, and the voltage becomes high at the same time: indicating that the user is clamping the positive terminal 61 of the starter battery 6 with a clip;

[0054] The first wire 11 and the first signal line 12 are changed from being conductive to being non-conductive, and the voltage becomes 0 at the same time. The control unit controls the switch relay K to be disconnected, indicating that the user is removing the first clamp 1 that clamps the positive terminal 61; when the user grasps the clamp, the switch relay K can be disconnected immediately, which greatly improves product safety.

[0055] In a preferred embodiment, the second clamp 2 is provided with:

[0056] A second wire 21, a first end of the second wire 21 is connected to the first side clamping tooth of the second clamp 2, and a second end of the second wire 21 is connected to the positive electrode of the power supply unit 4;

[0057] A second signal line 22, a first end of the second signal line 22 is connected to the second side clamping tooth of the second clamp 2, and a second end of the second signal line 22 is connected to the second input end of the control unit;

[0058] A corresponding second clamp 2 state signal is generated based on the first side clamping teeth and the second side clamping teeth of the second clamp 2 contacting or separating the second end of the second signal line 22 , and a corresponding second wiring state signal is generated based on the second clamp 2 and the external starting battery 6 contacting or separating the second end of the second signal line 22 .

[0059] Specifically, the second signal line 22 corresponds to the state of the second clamp 2 and the state of the second clamp 2 and the negative terminal 62. The state logic is similar to that of the first clamp 1, including:

[0060] The second wire 21 and the second signal wire 22 are conducting, and the voltage is high: the second clamp 2 has been clamped on the negative terminal 62 of the starter battery 6;

[0061] The second wire 21 and the second signal wire 22 are conducting, and the voltage is 0: the second clamp 2 is not clamped on the negative terminal 62 of the starter battery 6, and the clamping teeth on both sides of the second clamp 2 are closed;

[0062] The second wire 21 and the second signal wire 22 are not conducting, the voltage of the second wire 21 is high, and the voltage of the second signal wire 22 is 0: a) The switch relay K is damaged, the relay contacts are sintered together and cannot be separated, and the switch function fails; b) The user does not clamp the negative terminal 62 of the starter battery 6 correctly, and the user needs to be reminded to clamp it again;

[0063] The second wire 21 and the second signal wire 22 are not conducting, the voltage of the second wire 21 is 0, and the voltage of the second signal wire 22 is high: a) The user has not clamped the negative terminal 62 of the starter battery 6 correctly, and the user needs to be reminded to clamp it again; b) The switch relay K is damaged, the relay contact has burned out, and the switch function fails;

[0064] The second wire 21 and the second signal wire 22 are changed from non-conductive to conductive, and the voltage becomes high at the same time: indicating that the user is performing the action of clamping the negative terminal 62 of the starter battery 6 with the second clamp 2;

[0065] The second wire 21 and the second signal wire 22 are changed from being conductive to being non-conductive, and the voltage becomes 0 at the same time. The control unit controls the switch relay K to be disconnected, indicating that the user is removing the second clamp 2 that clamps the negative terminal 62; when the clamp is grasped, the switch relay K can be disconnected immediately, which greatly improves product safety.

[0066] In a preferred embodiment, the signal line includes a first signal line 12 and a second signal line 22 .

[0067] In a preferred embodiment, the first clip 1 and the second clip 2 are respectively provided with marks for distinguishing each other.

[0068] Specifically, the identification is used to distinguish the first clamp 1 and the second clamp 2 from each other to avoid wrong connection to different terminals of the starting battery 6. The identification can be in the form of marking, color marking, etc. In the utility model, the first clamp 1 is set to red and the second clamp 2 is set to black, corresponding to the red positive terminal 61 and the black negative terminal 62.

[0069] In a preferred embodiment, the engine current switch unit 3 includes:

[0070] A first transistor T, wherein the base of the first transistor T is connected to the first resistor R1 and then connected to the control unit to receive a control signal, the collector of the first transistor T is connected to the first coil pin of the switch relay K, and the emitter of the first transistor T is grounded;

[0071] a second resistor R2, wherein a first end of the second resistor R2 is connected to a base of the first transistor T, and a second end of the second resistor R2 is connected to an emitter of the first transistor T;

[0072] The first diode D1 has an anode connected to the collector of the first transistor T, and a cathode connected to the second coil pin of the switch relay K.

[0073] Specifically, when you hold the clamp handle firmly and the clamp mouth opens, it is equivalent to a manual contact switch. Only when the clamp teeth on both sides of the clamp mouth are electrically conductive, which can be direct contact or tightening the terminal and other conductors to achieve electrical conduction, the control unit will turn on the switch relay K to achieve external output and start the engine, which increases the reliability and safety of the product.

[0074] In a preferred embodiment, the power supply unit 4 includes:

[0075] Fuse F1, a first end of the fuse F1 is connected to the second clip 2;

[0076] The lithium battery pack 41 has a negative electrode connected to the second end of the fuse F1 , and a positive electrode connected to the common contact of the switch relay K.

[0077] In a preferred embodiment, the protection unit 5 includes a plurality of reverse charging prevention diodes connected in parallel, the positive poles of the reverse charging prevention diodes are connected to the normally open contacts of the switch relay K, and the negative poles of the reverse charging prevention diodes are connected to the first clamp 1 .

[0078] Specifically, the protection unit 5 of the present invention has four anti-reverse charging diodes, including:

[0079] A first anti-reverse charging diode D2, wherein the positive electrode of the first anti-reverse charging diode D2 is connected to the normally open contact of the switch relay K, and the negative electrode of the first anti-reverse charging diode D2 is connected to the first wire 11 of the first clip 1;

[0080] A second anti-reverse charging diode D3, wherein the positive electrode of the second anti-reverse charging diode D3 is connected to the normally open contact of the switch relay K, and the negative electrode of the second anti-reverse charging diode D3 is connected to the first wire 11 of the first clip 1;

[0081] A third anti-reverse charging diode D4 , wherein the anode of the third anti-reverse charging diode D4 is connected to the normally open contact of the switch relay K, and the cathode of the third anti-reverse charging diode D4 is connected to the first wire 11 of the first clip 1 .

[0082] A fourth anti-reverse charging diode D5 , wherein the anode of the fourth anti-reverse charging diode D5 is connected to the normally open contact of the switch relay K, and the cathode of the fourth anti-reverse charging diode D5 is connected to the first wire 11 of the first clip 1 .

[0083] In a preferred embodiment, the control unit is further provided with a sampling resistor, and the sampling resistor is connected to the normally open contact of the switch relay K.

[0084] Specifically, the control unit forcibly closes the switch relay K, and the sampling resistor outputs different output current values ​​in different states of the first clip 1 or the second clip 2 being connected or separated from the terminal, and the connection state between the clip and the terminal is determined by the change in the output current value of the sampling resistor;

[0085] To be more specific, under the condition that the first clip 1 or the second clip 2 is not connected to the starting battery 6 terminal, the switch relay K is forcibly closed, and the first clip 1 and the second clip 2 output the voltage of the lithium battery pack 41, which can be used as a DC output interface of the lithium battery pack 41; it has the effect of expanding product functions and facilitating user use.

[0086] In a preferred embodiment, the engine current switch unit 3, the power supply unit 4 and the protection unit 5 are all arranged inside the device body, and the first clip 1 and the second clip 2 are arranged outside the device body.

[0087] Specifically, the first clip 1 and the second clip 2 customized by the utility model are directly connected to the engine current switch part 3, the protection part 5 and the power supply part 4 inside the product device through the first wire 11 and the second wire respectively; the wire bodies of the first clip 1 and the second clip 2 are directly wound around the product device body, which has the effect of preventing users from losing them during use.

[0088] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An engine circuit with a signal line engine clamp lithium battery starting power supply, characterized in that: include, An engine current switch unit (3), wherein the engine current switch unit (3) is provided with a switch relay (K) that can be controlled to open and close based on a control signal, and the switch relay (K) is connected to a first end of the power supply unit (4); A first clamp (1), the first clamp (1) being connected to a protection part (5) and then connected to a normally open contact of the switch relay (K); a second clip (2), the second clip (2) being connected to a second end of the power supply unit (4), and a signal line being provided on the first clip (1) and / or the second clip (2); The control unit is connected to the signal line to receive the status signal, and the controlled end of the engine current switch unit (3) is connected to the control unit to receive the control signal output by the control unit.

2. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The first clamp (1) is provided with: A first wire (11), wherein a first end of the first wire (11) is connected to a first side clamping tooth of the first clamp (1), and a second end of the first wire (11) is connected to a second end of the protecting portion (5); A first signal line (12), wherein a first end of the first signal line (12) is connected to the second side clamping tooth of the first clamp (1), and a second end of the first signal line (12) is connected to a first input end of the control unit; A corresponding first clamp (1) state signal is generated based on the first side clamping teeth and the second side clamping teeth of the first clamp (1) contacting or separating the second end of the first signal line (12); and a corresponding first wiring state signal is generated based on the first clamp (1) and the external starting battery contacting or separating the second end of the first signal line (12).

3. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The second clamp (2) is provided with: A second wire (21), wherein a first end of the second wire (21) is connected to a first side clamping tooth of the second clamp (2), and a second end of the second wire (21) is connected to a positive electrode of the power supply unit (4); a second signal line (22), wherein a first end of the second signal line (22) is connected to a second side clamping tooth of the second clamp (2), and a second end of the second signal line (22) is connected to a second input end of the control unit; A corresponding second clamp (2) state signal is generated based on the first side clamping teeth and the second side clamping teeth of the second clamp (2) contacting or separating the second end of the second signal line (22); and a corresponding second wiring state signal is generated based on the second clamp (2) and the external starting battery contacting or separating the second end of the second signal line (22).

4. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 2 or 3, characterized in that: The signal line includes the first signal line (12) and the second signal line (22).

5. The engine circuit with signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The first clamp (1) and the second clamp (2) are respectively provided with marks for distinguishing each other.

6. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The engine current switch unit (3) comprises: a first transistor (T), wherein the base of the first transistor (T) is connected to the first resistor (R1) and then connected to the control unit to receive the control signal, the collector of the first transistor (T) is connected to the first coil pin of the switch relay (K), and the emitter of the first transistor (T) is grounded; a second resistor (R2), wherein a first end of the second resistor (R2) is connected to the base of the first transistor (T), and a second end of the second resistor (R2) is connected to the emitter of the first transistor (T); A first diode (D1), wherein the anode of the first diode (D1) is connected to the collector of the first transistor (T), and the cathode of the first diode (D1) is connected to the second coil pin of the switch relay (K).

7. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The power supply unit (4) comprises: a fuse (F1), wherein a first end of the fuse (F1) is connected to the second clip (2); A lithium battery pack (41), wherein the negative electrode of the lithium battery pack (41) is connected to the second end of the fuse (F1), and the positive electrode of the lithium battery pack (41) is connected to the common contact of the switch relay (K).

8. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The protection unit (5) comprises a plurality of reverse charging prevention diodes connected in parallel, wherein the positive electrodes of the reverse charging prevention diodes are connected to the normally open contacts of the switch relay (K), and the negative electrodes of the reverse charging prevention diodes are connected to the first clamp (1).

9. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The control unit is further provided with a sampling resistor, and the sampling resistor is connected to the normally open contact of the switch relay (K).

10. The engine circuit with a signal line engine clamp lithium battery starting power supply according to claim 1, characterized in that: The engine current switch part (3), the power supply part (4) and the protection part (5) are all arranged in the device body, and the first clamp (1) and the second clamp (2) are arranged outside the device body.

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