Reverse connection prevention circuit for power connection and vehicle

Abstract

The utility model relates to an anti-reverse-connection circuit for power connection and a vehicle, and the anti-reverse-connection circuit comprises a power connection structure, a detection module, a switch module, a storage battery and a vehicle load which are disposed on the vehicle. The power connection structure is respectively connected with the detection module, the switch module and an external power supply; the detection module is connected with the switch module and is used for detecting the connection condition of the power connection structure and an external power supply and generating a corresponding driving signal; and the switch module is respectively connected with the storage battery and the vehicle load and is used for carrying out on-off switching on the power supply of the external power supply to the storage battery and the vehicle load under the control of the driving signal. According to the application, the problems of power supply short circuit, accidents and potential safety hazards caused by reverse connection of power supply polarity due to misoperation of a user in related technologies are solved; automatic reverse connection prevention is achieved through cooperation of the detection module and the switch module, accidents caused by power supply reverse connection short circuit are eliminated, and use safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle jump-starting, in particular to an anti-reverse connection circuit for jump-starting and a vehicle. Background Art

[0002] The battery used to start the vehicle is installed in the cab. If the vehicle is not started for a long time or consumes power abnormally, the battery may be depleted and the vehicle cannot be started normally. In this case, the battery needs to be charged through a jump power supply solution to start the vehicle.

[0003] The current jump-start power supply scheme is: the external power supply is connected to the corresponding jump-start structure on the vehicle through the positive and negative clips, and the jump-start structure is connected to the battery, so that the external power supply supplies power to the battery. The external power supply is provided with a reverse connection prevention design such as positive and negative pole markings on the positive and negative clips. The disadvantage of this scheme is that it cannot completely avoid the occurrence of reverse connection. Once the user makes an operational error and the power polarity is reversed, it will cause a power short circuit, causing an accident and posing a safety hazard.

[0004] Currently, in the related technology, there is no effective solution to the problem that user operation errors may cause the power polarity to be connected in reverse, resulting in a power short circuit, causing an accident and posing a safety hazard. Utility Model Content

[0005] In view of this, it is necessary to provide an anti-reverse connection circuit and vehicle for jumpering, so as to at least solve the problem in the related technology that the user's operating error causes the power polarity to be reversed, causing a power short circuit, causing an accident, and posing a safety hazard.

[0006] In a first aspect, in this embodiment, a reverse connection prevention circuit for jumpering is provided, comprising a jumpering structure, a detection module, a switch module, a battery and a vehicle load arranged on a vehicle;

[0007] The electrical connection structure is connected to the detection module, the switch module and the external power supply respectively;

[0008] The detection module is connected to the switch module and is used to detect the connection between the electrical structure and the external power supply and generate a corresponding driving signal;

[0009] The switch module is connected to the battery and the vehicle load respectively, and is used to switch on and off the power supply of the battery and the vehicle load by the external power source under the control of the driving signal.

[0010] In some of the embodiments, the detection module is one of a diode, a triode, a field effect transistor and a detection unit.

[0011] In some of the embodiments, the positive electrode of the diode is connected to the positive electrode terminal of the bridge structure, and the negative electrode of the diode is connected to the control terminal of the switch module;

[0012] When the bridge structure is reversely connected to the external power source, the diode is in an open circuit state and generates an open circuit driving signal; under the open circuit driving signal, the switch module is disconnected, so that the external power source stops supplying power to the battery and the vehicle load;

[0013] When the bridge structure is positively connected to the external power supply, the diode is in a conduction state and generates a conduction drive signal; under the conduction drive signal, the switch module is turned on, so that the external power supply simultaneously supplies power to the battery and the vehicle load.

[0014] In some of the embodiments, the detection unit includes a current detection subunit and a judgment subunit;

[0015] The current detection subunit is connected to the positive terminal of the bridge structure and the second input terminal of the judgment subunit respectively, and is used to collect the first current value and transmit the first current value to the second input terminal of the judgment subunit;

[0016] The first input end of the judgment subunit is connected to the positive terminal of the bridge structure, and the output end of the judgment subunit is connected to the control end of the switch module; the judgment subunit is used to collect the second current value through the first input end, and determine the corresponding drive signal according to the first current value and the second current value.

[0017] In some of the embodiments, the switch module is one of a relay, a triode and a field effect transistor.

[0018] In some of the embodiments, the anti-reverse connection circuit further includes a first protection module;

[0019] The first protection module is connected to the switch module, the battery and the vehicle load respectively, and is used to protect the battery and the vehicle load.

[0020] In some of the embodiments, the first protection module is a first fuse;

[0021] A first fusing current of the first fuse is greater than a sum of a charging current of the battery and an operating current of the vehicle load.

[0022] In some of the embodiments, the anti-reverse connection circuit further includes a second protection module;

[0023] The second protection module is connected to the first protection module, the battery and the vehicle load respectively, and is used to protect the battery.

[0024] In some of the embodiments, the second protection module is a second fuse;

[0025] A second fusing current of the second fuse is greater than the first fusing current.

[0026] In a second aspect, a vehicle is provided in this embodiment, comprising an anti-reverse connection circuit for jumpering as described in the first aspect.

[0027] Compared with the related art, the anti-reverse connection circuit and vehicle for jumpering provided in this embodiment, wherein the anti-reverse connection circuit includes a jumpering structure, a detection module, a switch module, a battery and a vehicle load arranged on the vehicle; the jumpering structure is respectively connected to the detection module, the switch module and the external power supply; the detection module is connected to the switch module, and is used to detect the connection status of the jumpering structure and the external power supply and generate a corresponding drive signal; the switch module is respectively connected to the battery and the vehicle load, and is used to switch the power supply of the external power supply to the battery and the vehicle load on and off under the control of the drive signal; the problem in the related art that the user's operating error causes the power polarity to be reversed, causing a power short circuit, causing an accident, and posing a safety hazard is solved; the detection module and the switch module are used to cooperate to achieve automatic reverse connection prevention, eliminate accidents caused by power reverse short circuit, and improve the safety of use.

[0028] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 is a schematic diagram of an anti-reverse connection circuit for jumpering provided in the first embodiment of the present application;

[0031] Figure 2 is a schematic diagram of an anti-reverse connection circuit for jumpering provided in a second embodiment of the present application;

[0032] Figure 3 is a schematic diagram of an anti-reverse connection circuit for jumpering provided in a third embodiment of the present application;

[0033] Figure 4 It is a schematic diagram of an anti-reverse connection circuit for jumpering provided in a preferred embodiment of the present application.

[0034] In the figure: 10, power structure; 20, detection module; 21, current detection subunit; 22, judgment subunit; 30, switch module; 40, battery; 50, vehicle load; 60, first protection module; 70, second protection module. DETAILED DESCRIPTION

[0035] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0036] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the general meaning understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the", "these" and the like in this application do not represent quantitative restrictions, and they can be singular or plural. The terms "include", "comprise", "have" and any variants thereof involved in this application are intended to cover non-exclusive inclusions; for example, a process, method and system, product or device comprising a series of steps or modules (units) is not limited to the listed steps or modules (units), but may include unlisted steps or modules (units), or may include other steps or modules (units) inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether directly or indirectly. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. Usually, the character " / " indicates that the objects associated with each other are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0037] In this embodiment, a reverse connection protection circuit for jumper is provided. Figure 1 is a schematic diagram of the structure of the anti-reverse connection circuit for jumpering of the first embodiment, as shown in Figure 1 As shown, the anti-reverse connection circuit for jumpering includes: a jumpering structure 10 arranged on a vehicle, a detection module 20, a switch module 30, a battery 40 and a vehicle load 50;

[0038] The electrical structure 10 is connected to the detection module 20, the switch module 30 and the external power supply respectively;

[0039] The detection module 20 is connected to the switch module 30 and is used to detect the connection between the electrical structure 10 and the external power supply and generate a corresponding driving signal;

[0040] The switch module 30 is connected to the battery 40 and the vehicle load 50 respectively, and is used to switch on and off the power supply of the battery 40 and the vehicle load 50 by the external power source under the control of the driving signal.

[0041] Specifically, the pick-up structure 10 is generally arranged under the front hood of the vehicle, which refers to a structure connected to the positive and negative poles of an external power source, including a positive terminal and a negative terminal. If the vehicle has not been started for a long time or consumes power abnormally, the battery 40 used to start the vehicle may be depleted, making it impossible for the vehicle to start normally. At this time, the external power source needs to be connected to the pick-up structure 10 accordingly. The normal pick-up sequence is: the positive pole of the external power source is connected to the positive terminal of the pick-up structure 10; the negative pole of the external power source is connected to the negative terminal of the pick-up structure 10; after the connection is completed, the external power source supplies power to the battery 40 and the vehicle load 50 through the pick-up structure 10. After the battery 40 is charged, the vehicle can be started normally. In this embodiment, the vehicle does not need to be started, and the external power source can directly power the vehicle load 50, so that the vehicle load 50 can operate normally, which is suitable for the use scenario of the vehicle as a display vehicle.

[0042] If the normal connection sequence is reversed, that is, the positive pole of the external power supply is connected to the negative pole of the connection structure 10; the negative pole of the external power supply is connected to the positive pole of the connection structure 10, it will cause a power short circuit, causing an accident and posing a safety hazard; therefore, in this embodiment, the detection module 20 is introduced to form an anti-reverse connection circuit structure in combination with the switch module 30 to solve the reverse connection problem. The detection module 20 and the switch module 30 separate the connection structure 10 from the battery 40 and the vehicle load 50;

[0043] The working principle is explained below:

[0044] The detection module 20 detects the connection between the bridging structure 10 and the external power supply. When the current value (or voltage value) collected by the detection module 20 is less than or equal to the preset current threshold value (or voltage threshold value), it is considered that the bridging structure 10 is detected to be normally connected to the external power supply, and a driving signal of the path (which can be a high-level signal) is generated; the driving signal of the path is transmitted to the switch module 30, and the switch module 30 is turned on under the driving signal of the path, so that the external power supply simultaneously supplies power to the battery 40 and the vehicle load 50 through the bridging structure 10. When the current value (or voltage value) collected by the detection module 20 is greater than the preset current threshold value (or voltage threshold value), it is considered that the bridging structure 10 is detected to be reversely connected to the external power supply, and a disconnection driving signal (which can be a low-level signal) is generated; the disconnection driving signal is transmitted to the switch module 30, and the switch module 30 is disconnected under the disconnection driving signal, so that the external power supply stops supplying power to the battery 40 and the vehicle load 50 through the bridging structure 10.

[0045] Through this embodiment, the anti-reverse connection circuit for jumpering includes a jumpering structure 10, a detection module 20, a switch module 30, a battery 40 and a vehicle load 50 arranged on a vehicle; the jumpering structure 10 is respectively connected to the detection module 20, the switch module 30 and the external power supply; the detection module 20 is connected to the switch module 30, and is used to detect the connection status of the jumpering structure 10 and the external power supply and generate a corresponding drive signal; the switch module 30 is respectively connected to the battery 40 and the vehicle load 50, and is used to switch the power supply of the external power supply to the battery 40 and the vehicle load 50 on and off under the control of the drive signal; the problem in the related art that the user's operating error causes the power polarity to be reversed, causing a power short circuit, causing an accident, and posing a safety hazard is solved; the detection module 20 and the switch module 30 are used to cooperate to achieve automatic reverse connection prevention, eliminate accidents caused by reverse power short circuit, and improve the safety of use.

[0046] The following is a detailed description of each of the above components:

[0047] In some embodiments, the detection module 20 is one of a diode, a triode, a field effect transistor and a detection unit.

[0048] The detection module 20 has a variety of structural forms, including but not limited to a diode, a triode, a field effect transistor, and a detection unit. Any of the above devices can be used, so that users can select different devices according to the usage scenario to reduce the cost of use.

[0049] For different selections of the detection module 20, the connection between the detection module 20 and the electrical structure 10 and the switch module 30 can be adjusted accordingly, which is described below:

[0050] For example: In some embodiments, the detection module 20 is a diode, the anode of the diode is connected to the anode terminal of the bridge structure 10, and the cathode of the diode is connected to the control terminal of the switch module 30;

[0051] When the bridge structure 10 is reversely connected to the external power source, the diode is in an open circuit state and generates an open circuit driving signal; under the open circuit driving signal, the switch module 30 is disconnected, so that the external power source stops supplying power to the battery 40 and the vehicle load 50;

[0052] When the bridge structure 10 is positively connected to the external power source, the diode is in a conduction state and generates a conduction driving signal; under the conduction driving signal, the switch module 30 is turned on, so that the external power source simultaneously supplies power to the battery 40 and the vehicle load 50.

[0053] Among them, the diode is a reverse connection diode, which can only conduct unidirectionally from the positive pole to the negative pole. If the bridging structure 10 is positively connected to the external power supply, the diode is in a conductive state, and the diode outputs a driving signal of the path (which can be a high-level signal), and the driving signal of the path is transmitted to the control end of the switch module 30; the switch module 30 is turned on, so that the external power supply can simultaneously supply power to the battery 40 and the vehicle load 50. If the bridging structure 10 is reversely connected to the external power supply, the current at the positive pole of the diode is too large, causing the diode to be in an open circuit state, and the diode outputs an open circuit driving signal (which can be a low-level signal), and the open circuit driving signal is transmitted to the control end of the switch module 30; the switch module 30 is open circuit, so that the external power supply stops supplying power to the battery 40 and the vehicle load 50.

[0054] Through this embodiment, a simple diode is used to complete the setting of the detection module 20, the structure is simple and stable, and the production cost is greatly reduced.

[0055] For example: In some embodiments, Figure 2 As shown, the detection module 20 is a detection unit, and the detection unit includes a current detection subunit 21 and a judgment subunit 22;

[0056] The current detection subunit 21 is connected to the positive terminal of the power structure 10 and the second input terminal of the judgment subunit 22, respectively, and is used to collect the first current value and transmit the first current value to the second input terminal of the judgment subunit 22;

[0057] The first input end of the judgment subunit 22 is connected to the positive terminal of the power structure 10, and the output end of the judgment subunit 22 is connected to the control end of the switch module 30; the judgment subunit 22 is used to collect the second current value through the first input end, and determine the corresponding drive signal according to the first current value and the second current value.

[0058] Among them, the detection unit includes two sub-units, namely a current detection sub-unit 21 and a judgment sub-unit 22. The input end of the current detection sub-unit 21 is connected to the positive terminal of the pick-up structure 10, the output end of the current detection sub-unit 21 is connected to the second input end of the judgment sub-unit 22, the first input end of the judgment sub-unit 22 is connected to the positive terminal of the pick-up structure 10, the output end of the judgment sub-unit 22 is connected to the control end of the switch module 30, and the negative pole of the external power supply and the negative terminal of the pick-up structure 10 are grounded.

[0059] The current detection subunit 21 is used to collect a first current value and transmit the first current value to the judgment subunit 22, the first current value is compared with a preset first current threshold value, and a first comparison result is generated (the first current value is less than or equal to the preset first current threshold value, it is considered to be positively connected; otherwise, it is reversely connected); the judgment subunit 22 collects a second current value through its first input terminal, and compares the second current value with a preset second current threshold value, and generates a second comparison result (the second current value is less than or equal to the preset second current threshold value, it is considered to be positively connected; otherwise, it is reversely connected); wherein, the preset first current threshold value is greater than the preset second current threshold value; only when both comparison results are reversely connected, will it be considered that the external power supply is reversely connected to the bridge structure 10, and a circuit-breaking drive signal is generated.

[0060] In this embodiment, the double logic judgment of the judgment subunit 22 is used to avoid the influence of circuit fluctuations in the external power supply and improve stability.

[0061] In other embodiments, the detection module 20 may be in other structural forms, which will not be illustrated here.

[0062] In some embodiments, the switch module 30 is one of a relay, a transistor and a field effect transistor.

[0063] The switch module 30 is a relay, the control end of the relay is connected to the output end of the detection module 20, the input end of the relay is connected to the positive terminal of the bridge structure 10, and the output end of the relay is respectively connected to the battery 40 and the vehicle load 50. When the control end of the relay inputs the driving signal of the path, the relay is turned on, so that the external power supply simultaneously supplies power to the battery 40 and the vehicle load 50. When the control end of the relay inputs the driving signal of the circuit breakers, the relay is turned off, so that the external power supply stops supplying power to the battery 40 and the vehicle load 50.

[0064] Among them, the switch module 30 is a field effect tube, the gate g of the field effect tube is connected to the output end of the detection module 20, the source s of the field effect tube is connected to the positive terminal of the bridge structure 10, and the drain d of the field effect tube is respectively connected to the battery 40 and the vehicle load 50. When the gate g of the field effect tube inputs the driving signal of the path, the source s to the drain d of the field effect tube are turned on, so that the external power supply supplies power to the battery 40 and the vehicle load 50 at the same time. When the gate g of the field effect tube inputs the driving signal of the circuit break, the source s to the drain d of the field effect tube are disconnected, so that the external power supply stops supplying power to the battery 40 and the vehicle load 50.

[0065] Through this embodiment, different options are adopted for the switch module 30 to increase the applicable scenarios of the anti-reverse connection circuit.

[0066] In some embodiments, such as Figure 3 As shown, the anti-reverse connection circuit further includes a first protection module 60;

[0067] The first protection module 60 is connected to the switch module 30 , the battery 40 and the vehicle load 50 respectively, and is used to protect the battery 40 and the vehicle load 50 .

[0068] Among them, the input end of the first protection module 60 is connected to the output end of the switch module 30, and the output end of the first protection module 60 is respectively connected to the battery 40 and the vehicle load 50. The first protection module 60 is used to separate the switch module 30 from the battery 40, and also to separate the switch module 30 from the vehicle load 50. If the power supply current of the external power supply suddenly increases, when the power supply current is greater than the first fuse current set in the first protection module 60, the first protection module 60 will fuse and protect the battery 40 and the vehicle load 50, thereby improving the safety of use.

[0069] The first protection module 60 may be in various forms. For example, the first protection module 60 is a first fuse;

[0070] The first fusing current of the first fuse is greater than the sum of the charging current of the battery 40 and the operating current of the vehicle load 50 .

[0071] If the sum of the charging current of the battery 40 and the operating current of the vehicle load 50 is 95A, then the first fuse current of the first fuse can be selected to be 96A, 100A, 110A, 200A, 220A, etc. The specific parameter selection of the first fuse current can be set according to the usage scenario, and there is no limitation on this. In other embodiments, the first fuse can also be a fuse in the MDB main distribution box.

[0072] Through this embodiment, a reasonable first fusing current of the first fuse is set, so that the battery 40 and the vehicle load 50 are protected while ensuring that the battery 40 and the vehicle load 50 can be used normally.

[0073] In some embodiments, such as Figure 3 As shown, the anti-reverse connection circuit further includes a second protection module 70;

[0074] The second protection module 70 is connected to the first protection module 60 , the battery 40 and the vehicle load 50 respectively, and is used to protect the battery 40 .

[0075] Among them, the input end of the second protection module 70 is respectively connected to the output end of the first protection module 60 and the vehicle load 50, and the output end of the second protection module 70 is connected to the battery 40. The second protection module 70 is used to isolate the battery 40. If the power supply current of the external power supply suddenly increases, when the power supply current is greater than the second fuse current set in the second protection module 70, the second protection module 70 fuses and protects the battery 40, thereby improving the safety of use.

[0076] The second protection module 70 may be in various forms. For example, the second protection module 70 is a second fuse;

[0077] The second fusing current of the second fuse is greater than the first fusing current.

[0078] If the first fusing current is 100A, the second fusing current of the second fuse can be selected as 150A, 200A, 250A, 300A, etc. The specific parameter selection of the second fusing current can be set according to the usage scenario, and there is no limitation on this. In other embodiments, the second fuse can also be a fuse in the BFB positive fuse box.

[0079] Through this embodiment, a reasonable second fusing current is set for the second fuse to ensure that the battery 40 is further protected under long-term power supply from the external power source.

[0080] Figure 4 Schematic diagram of the anti-reverse connection circuit for jumpering of the preferred embodiment. It includes a jumpering structure 10, a detection module 20, a switch module 30, a battery 40 and a vehicle load 50 arranged on a vehicle; wherein the detection module 20 is a diode; and the switch module 30 is a relay. The positive electrode of the diode is connected to the positive terminal of the jumpering structure 10, and the negative electrode of the diode is connected to the control end of the relay; the input end of the relay is connected to the positive terminal of the jumpering structure 10, and the output end of the relay is connected to the input end of the first protection module 60; the output end of the first protection module 60 is respectively connected to the vehicle load 50 and the input end of the second protection module 70; the output end of the second protection module 70 is connected to the battery 40. When the bridge structure 10 is reversely connected to the external power supply, the diode is in an open circuit state and generates an open circuit driving signal; under the open circuit driving signal, the relay is disconnected, so that the external power supply stops supplying power to the battery 40 and the vehicle load 50; when the bridge structure 10 is positively connected to the external power supply, the diode is in a conductive state and generates a conductive driving signal; under the conductive driving signal, the relay is turned on, so that the external power supply simultaneously supplies power to the battery 40 and the vehicle load 50. The first protection module 60 protects the battery 40 and the vehicle load 50; the second protection module 70 protects the battery 40 alone.

[0081] Through this embodiment, the cooperation of diodes and relays is used to realize automatic reverse connection protection, eliminate accidents caused by reverse connection of power supply and short circuit, and improve the safety and stability of use; and a double protection module is configured to greatly improve the safety of long-term use.

[0082] It should be noted that the above modules can be functional modules or program modules, and can be implemented by software or hardware. For modules implemented by hardware, the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0083] In this embodiment, a vehicle is also provided, comprising the anti-reverse connection circuit for jumpering in the above-mentioned embodiments.

[0084] Through the above-mentioned vehicle, the problem in the related technology that the user's operating error causes the power polarity to be connected in reverse, resulting in a power short circuit, causing an accident and posing a safety hazard is solved; the detection module 20 and the switch module 30 are used to cooperate to achieve automatic reverse connection protection, eliminate accidents caused by reverse power short circuit, and improve the safety of use.

[0085] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation modes, and will not be repeated in this embodiment.

[0086] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0087] It should be understood that the specific embodiments described herein are only used to explain the application, rather than to limit it. Based on the embodiments provided in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of this application.

[0088] Obviously, the drawings are only some examples or embodiments of the present application. For ordinary technicians in the field, the present application can also be applied to other similar situations based on these drawings without creative work. In addition, it is understandable that although the work done in this development process may be complicated and lengthy, for ordinary technicians in the field, certain changes in design, manufacturing or production based on the technical content disclosed in this application are only conventional technical means and should not be regarded as insufficient content disclosed in this application.

[0089] The term "embodiment" in this application refers to a specific feature, structure or characteristic described in conjunction with the embodiment that can be included in at least one embodiment of the present application. The appearance of this phrase in various locations in the specification does not necessarily mean the same embodiment, nor does it mean that it is mutually exclusive with other embodiments and is independent or optional. It is clearly or implicitly understood by those of ordinary skill in the art that the embodiments described in this application can be combined with other embodiments without conflict.

[0090] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of patent protection. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A reverse connection protection circuit for jumpering, characterized in that: It comprises a power-on structure (10) arranged on a vehicle, a detection module (20), a switch module (30), a storage battery (40) and a vehicle load (50); The electrical connection structure (10) is respectively connected to the detection module (20), the switch module (30) and an external power source; The detection module (20) is connected to the switch module (30) and is used to detect the connection between the bridge structure (10) and the external power supply and generate a corresponding drive signal; the detection module (20) is one of a diode, a triode, a field effect transistor and a detection unit; The switch module (30) is connected to the storage battery (40) and the vehicle load (50) respectively, and is used to switch on and off the power supply of the storage battery (40) and the vehicle load (50) by the external power source under the control of the drive signal.

2. The anti-reverse connection circuit for jumpering according to claim 1, characterized in that: The positive electrode of the diode is connected to the positive electrode terminal of the bridge structure (10), and the negative electrode of the diode is connected to the control end of the switch module (30); When the power-on structure (10) is reversely connected to the external power source, the diode is in an open circuit state and generates an open circuit driving signal; under the open circuit driving signal, the switch module (30) is disconnected, so that the external power source stops supplying power to the storage battery (40) and the vehicle load (50); When the bridge structure (10) is positively connected to the external power source, the diode is in a conduction state and generates a conduction drive signal; under the conduction drive signal, the switch module (30) is turned on, so that the external power source supplies power to the battery (40) and the vehicle load (50) at the same time.

3. The anti-reverse connection circuit for jumpering according to claim 1, characterized in that: The detection unit comprises a current detection subunit (21) and a judgment subunit (22); The current detection subunit (21) is respectively connected to the positive terminal of the power connection structure (10) and the second input end of the judgment subunit (22), and is used to collect a first current value and transmit the first current value to the second input end of the judgment subunit (22); The first input end of the judgment subunit (22) is connected to the positive terminal of the power-connecting structure (10), and the output end of the judgment subunit (22) is connected to the control end of the switch module (30); the judgment subunit (22) is used to collect the second current value through the first input end, and determine the corresponding drive signal according to the first current value and the second current value.

4. The anti-reverse connection circuit for jumpering according to claim 1, characterized in that: The switch module (30) is one of a relay, a triode and a field effect transistor.

5. The anti-reverse connection circuit for jumpering according to claim 1, characterized in that: The anti-reverse connection circuit also includes a first protection module (60); The first protection module (60) is respectively connected to the switch module (30), the storage battery (40) and the vehicle load (50), and is used to protect the storage battery (40) and the vehicle load (50).

6. The anti-reverse connection circuit for jumpering according to claim 5, characterized in that: The first protection module (60) is a first fuse; The first fusing current of the first fuse is greater than the sum of the charging current of the battery (40) and the operating current of the vehicle load (50).

7. The anti-reverse connection circuit for jumpering according to claim 6, characterized in that: The anti-reverse connection circuit also includes a second protection module (70); The second protection module (70) is respectively connected to the first protection module (60), the storage battery (40) and the vehicle load (50) and is used to protect the storage battery (40).

8. The anti-reverse connection circuit for jumpering according to claim 7, characterized in that: The second protection module (70) is a second fuse; A second fusing current of the second fuse is greater than the first fusing current.

9. A vehicle, characterized in that: The invention comprises an anti-reverse connection circuit for jumpering as claimed in any one of claims 1 to 8.

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