Vehicle-mounted booster and vehicle-mounted boosting device

Abstract

The utility model discloses a vehicle-mounted booster and a vehicle-mounted boosting device, and relates to the technical field of automobile batteries, the vehicle-mounted booster comprises a first relay K1, a second relay K2, an electric drive inductor and a third relay K3, the first relay K1 is connected with the positive electrode of a charging pile, the first relay K1 is further connected with the second relay K2, the electric drive inductor and the positive electrode of a battery in sequence, and the third relay K3 is connected with the electric drive inductor. When the first relay, the second relay and the third relay are closed, the electric drive inductor boosts the voltage of the charging pile and outputs the voltage to the battery, and the first relay, the second relay and the third relay are all relays with auxiliary contacts. The auxiliary contact is used for feeding back the closing or opening state of the corresponding relay, the closing or opening condition of the corresponding relay can be directly obtained through the auxiliary contact, the on-off state of the relay can be obtained without collecting the voltage at the two ends of the relay, the circuit is simplified, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile battery, especially a kind of vehicle-mounted voltage booster and vehicle-mounted voltage boosting device. BACKGROUND

[0002] High-power modular power electronic equipment such as voltage booster is configured with large-capacity relay as switching element inside, and the relay is based on electromagnetic induction and contact action. When the input reaches the specified value, the electromagnet inside the relay will generate enough magnetic force to attract the contact to close or open, thereby realizing the control of the circuit. If the relay has a sticking fault, the device cannot operate.

[0003] In the prior art, the on-off state of the relay is obtained by collecting the voltage across the relay and converting the high-voltage sampling signal into a low-voltage signal for analysis, which increases the complexity and manufacturing cost of the circuit. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of vehicle-mounted voltage booster and vehicle-mounted voltage boosting device, to solve the technical problem that the complexity and manufacturing cost of circuit are increased in the prior art in the related art by collecting the voltage across the relay and converting the high-voltage sampling signal into a low-voltage signal for analysis to obtain the on-off state of the relay.

[0005] In the first aspect, a vehicle-mounted voltage booster is provided, comprising:

[0006] A first relay K1, a second relay K2, an electric drive inductor, and a third relay K3;

[0007] The first relay K1 is connected to the positive electrode of the charging pile, and the first relay K1 is also connected to the second relay K2, the electric drive inductor, and the positive electrode of the battery in sequence.

[0008] The third relay K3 is connected to the negative electrode of the charging pile and the negative electrode of the battery, respectively.

[0009] When the first relay K1, the second relay K2, and the third relay K3 are closed, the electric drive inductor outputs the voltage of the charging pile after boosting; the first relay K1, the second relay K2, and the third relay K3 are all relays with auxiliary contacts, and the auxiliary contacts are used to feedback the closing or opening state of the corresponding relay.

[0010] In some embodiments, the vehicle-mounted voltage booster further comprises:

[0011] A filtering module is arranged between the first relay K1 and the second relay K2, and is used to filter the voltage.

[0012] In some embodiments, the filter module comprises:

[0013] a first capacitor C1, a first end of the first capacitor C1 is connected with the first relay K1, and a second end of the first capacitor C1 is connected with the negative pole of the charging pile;

[0014] a low-pass filter unit, the low-pass filter unit is connected in parallel with the first capacitor C1;

[0015] a second capacitor C2, the second capacitor C2 is connected in parallel with the low-pass filter unit, a first end of the second capacitor C2 is connected with the second relay K2, and a second end of the second capacitor C2 is connected with the third relay K3.

[0016] In some embodiments, the low-pass filter unit comprises:

[0017] a first magnetic ring assembly, the first magnetic ring assembly is connected in parallel with the first capacitor C1;

[0018] a third capacitor C3, the third capacitor C3 is connected in parallel with the first magnetic ring assembly;

[0019] a fourth capacitor C4, a first end of the fourth capacitor C4 is connected with a first end of the third capacitor C3, and a second end of the fourth capacitor C4 is grounded;

[0020] a fifth capacitor C5, a first end of the fifth capacitor C5 is connected with a second end of the fourth capacitor C4, and a second end of the fifth capacitor C5 is connected with a second end of the third capacitor C3;

[0021] a second magnetic ring assembly, the second magnetic ring assembly is connected in parallel with the third capacitor C3.

[0022] In some embodiments, the filter module further comprises:

[0023] a discharge resistor R1, the discharge resistor R1 is arranged between the second magnetic ring assembly and the second capacitor C2, and the discharge resistor R1 is connected in parallel with the second magnetic ring assembly and the second capacitor C2, respectively.

[0024] In some embodiments, the filter module further comprises:

[0025] a sixth capacitor C6, a first end of the sixth capacitor C6 is connected with a first end of the first capacitor C1, and a second end of the sixth capacitor C6 is grounded;

[0026] a seventh capacitor C7, a first end of the seventh capacitor C7 is connected with a second end of the sixth capacitor C6, and a second end of the seventh capacitor C7 is connected with a second end of the first capacitor C1.

[0027] In some embodiments, the first capacitor C1, the second capacitor C2, and the third capacitor C3 are X capacitors, and the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, and the seventh capacitor C7 are Y capacitors.

[0028] In some embodiments, the on-vehicle voltage booster further comprises:

[0029] A high-voltage interlocking loop connected with the high-voltage connector.

[0030] In a second aspect, an on-vehicle voltage boosting device is provided, comprising the on-vehicle voltage booster as described above, and further comprising a housing, wherein the on-vehicle voltage booster is arranged in the housing.

[0031] In some embodiments, a waterproof air-permeable valve is arranged on the side of the housing, for maintaining the pressure balance inside the housing.

[0032] The beneficial effects brought by the technical solutions provided by the utility model include:

[0033] The utility model discloses a kind of on-vehicle voltage booster and on-vehicle voltage boosting device, the on-vehicle voltage booster includes first relay K1, second relay K2, electric drive inductance, third relay K3, the first relay K1 is connected with charging pile anode, the first relay K1 is also sequentially connected with the second relay K2, the electric drive inductance, battery anode, the third relay K3 is connected with the charging pile cathode, battery cathode respectively, when the first relay K1, the second relay K2, the third relay K3 close, the electric drive inductance is output to the battery after the voltage of the charging pile is boosted, the first relay K1, the second relay K2, the third relay K3 are all auxiliary contact point's relay, the auxiliary contact point is used to feedback the closed or disconnected state of its corresponding relay, the closed or disconnected condition of its corresponding relay can be directly obtained by the auxiliary contact point, without collecting the voltage of relay two ends, the on-off state of relay can be obtained, circuit is simplified, and manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0035] Figure 1 The overall block diagram of the on-vehicle voltage booster provided by the utility model embodiment is shown in the figure.

[0036] Figure 2A specific block diagram of a vehicle-mounted voltage booster provided by the embodiment of the utility model;

[0037] Figure 3 A circuit principle diagram of a vehicle-mounted voltage booster provided by the embodiment of the utility model;

[0038] Figure 4 A structure schematic view of a vehicle-mounted voltage boosting device provided by the embodiment of the utility model;

[0039] Reference signs:

[0040] 1, shell; 11, waterproof breather valve. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] The embodiments of the utility model provide a vehicle-mounted voltage booster and a vehicle-mounted voltage boosting device, which can solve the technical problem of increasing the complexity of the circuit and the manufacturing cost in the prior art by collecting the voltage at both ends of the relay and converting the high-voltage sampling signal into a low-voltage signal to analyze and obtain the on-off state of the relay.

[0043] Figure 1 The utility model embodiment provides a kind of vehicle-mounted voltage booster, comprising: first relay K1, second relay K2, electric drive inductance, third relay K3.

[0044] The first relay K1 is connected with the positive pole of charging pile, and the first relay K1 is also connected with the second relay K2, the electric drive inductance and the positive pole of battery in sequence, and the third relay K3 is connected with the negative pole of charging pile and the negative pole of battery, respectively.When the first relay K1, the second relay K2 and the third relay K3 are closed, the electric drive inductance outputs the voltage of the charging pile after voltage boosting;The first relay K1, the second relay K2 and the third relay K3 are all relays with auxiliary contacts, and the auxiliary contacts are used to feedback the closing or opening state of the corresponding relay.

[0045] The utility model discloses an on -vehicle booster who is provided with first relay K1, second relay K2, electric drive inductance, third relay K3, first relay K1 is connected with the charging stake anode, first relay K1 still with second relay K2, electric drive inductance, battery anode connects gradually, third relay K3 is connected with charging stake cathode, battery cathode respectively, when first relay K1, second relay K2, third relay K3 close, the voltage that charging stake exports is exported to battery after the voltage through electric drive inductance boost, when first relay K1, second relay K2, third relay K3 disconnect, electric drive inductance stops boosting, first relay K1, second relay K2, third relay K3 are all the relay of taking auxiliary contact, the auxiliary contact is used for the feedback of its corresponding relay's close or open state, through the observation of the on-off condition of the auxiliary contact of each relay, the current on-off condition of first relay K1, second relay K2, third relay K3 can be directly obtained, and whether first relay K1, second relay K2, third relay K3 occurs sticking fault is judged further, need not to collect the voltage of the both ends of relay and can obtain the close or open state of relay, simplifyed the circuit, reduced the manufacturing cost.

[0046] As an optional implementation, in one utility model implementation, referring to Figure 2 And Figure 3 The vehicle-mounted booster further includes a filtering module, which is arranged between the first relay K1 and the second relay K2 and is used for filtering voltage. The filtering module processes the input voltage signal, removes unnecessary high-frequency unstable components, and makes the waveform of the voltage signal more smooth and stable.

[0047] As an optional implementation, in one utility model implementation, referring to Figure 3As shown, the filter module comprises: a first capacitor C1, a low-pass filter unit and a second capacitor C2, the first end of the first capacitor C1 is connected with the first relay K1, the second end of the first capacitor C1 is connected with the negative pole of the charging pile, the low-pass filter unit is connected with the first capacitor C1 in parallel, the second capacitor C2 is connected with the low-pass filter unit in parallel, the first end of the second capacitor C2 is connected with the second relay K2, the second end of the second capacitor C2 is connected with the third relay K3, the first capacitor C1 and the second capacitor C2 are used for energy storage and energy release, when the first relay K1, the second relay K2 and the third relay K3 are closed, the first capacitor C1 and the second capacitor C2 will be charged; when the first relay K1, the second relay K2 and the third relay K3 are disconnected, the first capacitor C1 and the second capacitor C2 will release the stored electric energy, so as to smooth the fluctuation of the output voltage of the vehicle-mounted voltage booster of the utility model, and also can release the stored electric energy when the output voltage fluctuates, thereby reducing the loss of the first relay K1, the second relay K2 and the third relay K3; the low-pass filter unit is a bipolar series low-pass filter, which is used for filtering high-frequency noise, so as to protect other elements in the circuit from being damaged, through filtering high-frequency noise and interference, the definition and fidelity of the output voltage signal can be improved, so that the output of the vehicle-mounted voltage booster is more stable and reliable.

[0048] As an optional embodiment, in one embodiment of the utility model, referring to Figure 3 As shown, the low-pass filter unit comprises: a first magnetic ring assembly, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5 and a second magnetic ring assembly, the first magnetic ring assembly is connected with the first capacitor C1 in parallel, the third capacitor C3 is connected with the first magnetic ring assembly in parallel, the first end of the fourth capacitor C4 is connected with the first end of the third capacitor C3, the second end of the fourth capacitor C4 is grounded, the first end of the fifth capacitor C5 is connected with the second end of the fourth capacitor C4, the second end of the fifth capacitor C5 is connected with the second end of the third capacitor C3, the second magnetic ring assembly is connected with the third capacitor C3 in parallel, the first magnetic ring assembly and the second magnetic ring assembly are differential common mode integrated magnetic rings, which combine the functions of differential mode magnetic ring and common mode magnetic ring, can simultaneously suppress differential mode interference and common mode interference, improve the anti-interference performance of the circuit, and ensure the stable transmission of the voltage signal; the third capacitor C3 is used for energy storage and energy release, and smooths the fluctuation of the output voltage, the fourth capacitor C4 and the fifth capacitor C5 have the characteristics of storing electric charge and discharging, can play a filtering role in the voltage boosting circuit, and are also used for absorbing part of electromagnetic wave interference and releasing interference energy to the ground, thereby effectively reducing the interference of electromagnetic waves on the circuit and improving the stability of the circuit.

[0049] As an optional implementation, in one utility model implementation, referring to Figure 3 As shown in the figure, the filter module further comprises a discharge resistor R1, which is arranged between the second magnetic ring assembly and the second capacitor C2, and is connected in parallel with the second magnetic ring assembly and the second capacitor C2 respectively. The discharge resistor R1 is used to limit the current and prevent other elements in the circuit from being damaged due to excessive current. That is, when the capacitor in the circuit needs to be discharged, the discharge resistor R1 releases the charge inside the capacitor to the external circuit, thereby protecting the capacitor in the circuit from being damaged due to overcharging.

[0050] As an optional implementation, in one utility model implementation, referring to Figure 3 As shown in the figure, the filter module further comprises a sixth capacitor C6 and a seventh capacitor C7. The first end of the sixth capacitor C6 is connected with the first end of the first capacitor C1, and the second end of the sixth capacitor C6 is grounded. The first end of the seventh capacitor C7 is connected with the second end of the sixth capacitor C6, and the second end of the seventh capacitor C7 is connected with the second end of the first capacitor C1. The sixth capacitor C6 and the seventh capacitor C7 have the characteristics of storing charge and discharging, can play a filtering role in the circuit, can also absorb part of electromagnetic wave interference, and improve the stability of the circuit.

[0051] As an optional implementation, in one utility model implementation, referring to Figure 3 As shown in the figure, the first capacitor C1, the second capacitor C2 and the third capacitor C3 are X capacitors, and the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are Y capacitors. The X capacitor is used to suppress differential mode interference, which is the interference existing between two power supply lines. The X capacitor helps to reduce high-frequency pulse interference in the circuit by providing a low-impedance path for differential mode noise, and also smoothes the fluctuation of power supply voltage through the charging and discharging process, thereby reducing the noise and interference of the power supply. The Y capacitor is used to suppress common mode interference, which is the interference existing between the power supply line and the ground line. By providing a low-impedance bypass, the Y capacitor allows common mode noise to flow directly to the ground, preventing it from entering the sensitive circuit and protecting the circuit from external interference.

[0052] As an optional implementation, in one utility model implementation, referring to Figure 3As shown, the vehicle-mounted voltage booster further comprises a high-voltage interlock loop HVIL connected with the high-voltage connector, which performs circuit integrity detection, and if the circuit is detected to be incomplete, such as virtual connection and other problems, the system will not be powered on, thereby avoiding accidents caused by incomplete circuits, and the connection state in the voltage boosting circuit can be detected, the high-voltage loop can be detected to loosen and early warning is made, and the safe, stable and reliable operation of the high-voltage boosting circuit is ensured.

[0053] The utility model embodiment further provides a kind of vehicle-mounted voltage boosting device, referring to Figure 4 As shown, comprising preceding vehicle-mounted voltage booster further includes shell 1, the vehicle-mounted voltage booster is located in the shell 1, the shell 1 is used to protect the vehicle-mounted voltage booster, the shell 1 includes upper shell and lower shell, upper shell and lower shell are detachably connected, it is convenient to overhaul the vehicle-mounted voltage booster, simultaneously, upper shell and lower shell are sealed by gluing between sampling, improve its waterproof performance.

[0054] As optional implementation, in one utility model embodiment, referring to Figure 4 As shown, the shell 1 side is equipped with waterproof breather valve 11, for maintaining the pressure balance inside the shell 1, the waterproof breather valve 11 can guarantee that the vehicle-mounted voltage booster is balanced in the case where extreme temperature is suddenly changed Pressure balance between inside and outside of voltage booster cavity, ensure that the vehicle-mounted voltage booster is waterproof sealed without failure in extreme environment.

[0055] In the description of the utility model, it needs to be explained that the orientation or positional relationship indicated by the terms "upper", "lower" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. Unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0056] It should be noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0057] The above description is merely that of the specific embodiments of the present application, and enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An on-vehicle voltage booster characterized by comprising: Comprise: The first relay K1, the second relay K2, the electric drive inductance, the third relay K3; The first relay K1 is connected with the positive pole of the charging pile, and the first relay K1 is also connected with the second relay K2, the electric drive inductance and the positive pole of the battery in sequence; The third relay K3 is connected with the negative pole of the charging pile and the negative pole of the battery respectively; When the first relay K1, the second relay K2 and the third relay K3 are closed, the electric drive inductance outputs the voltage of the charging pile after voltage boosting to the battery; The first relay K1, the second relay K2 and the third relay K3 are all relays with auxiliary contacts, and the auxiliary contacts are used for feeding back the closing or opening state of the corresponding relay.

2. The on-vehicle voltage booster according to claim 1, characterized by, Further comprise: The filter module is arranged between the first relay K1 and the second relay K2, and is used for filtering voltage.

3. The on-board voltage booster according to claim 2, characterized in that, The filter module comprises: A first capacitor C1, a first end of the first capacitor C1 is connected with the first relay K1, and a second end of the first capacitor C1 is connected with the negative pole of the charging pile; A low-pass filter unit, the low-pass filter unit is connected with the first capacitor C1 in parallel; A second capacitor C2, the second capacitor C2 is connected with the low-pass filter unit in parallel, a first end of the second capacitor C2 is connected with the second relay K2, and a second end of the second capacitor C2 is connected with the third relay K3.

4. The on-board voltage booster according to claim 3, characterized in that, The low-pass filter unit comprises: A first magnetic ring assembly, the first magnetic ring assembly is connected with the first capacitor C1 in parallel; A third capacitor C3, the third capacitor C3 is connected with the first magnetic ring assembly in parallel; A fourth capacitor C4, a first end of the fourth capacitor C4 is connected with a first end of the third capacitor C3, and a second end of the fourth capacitor C4 is grounded; A fifth capacitor C5, a first end of the fifth capacitor C5 is connected with a second end of the fourth capacitor C4, and a second end of the fifth capacitor C5 is connected with a second end of the third capacitor C3; A second magnetic ring assembly, the second magnetic ring assembly is connected with the third capacitor C3 in parallel.

5. The on-board voltage booster according to claim 4, characterized in that, The filter module further comprises: A discharge resistor R1, the discharge resistor R1 is arranged between the second magnetic ring assembly and the second capacitor C2, and the discharge resistor R1 is connected with the second magnetic ring assembly and the second capacitor C2 in parallel respectively.

6. The on-board voltage booster according to claim 5, characterized in that, The filter module further comprises: A sixth capacitor C6, a first end of the sixth capacitor C6 is connected with a first end of the first capacitor C1, and a second end of the sixth capacitor C6 is grounded; A seventh capacitor C7, a first end of the seventh capacitor C7 is connected with a second end of the sixth capacitor C6, and a second end of the seventh capacitor C7 is connected with a second end of the first capacitor C1.

7. The vehicle-mounted voltage booster according to claim 6, wherein: The first capacitor C1, the second capacitor C2 and the third capacitor C3 are all X capacitors, and the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are all Y capacitors.

8. The on-board voltage booster according to claim 1, characterized in that, Further comprise: A high-voltage interlocking loop connected with a high-voltage connector.

9. A vehicle-mounted voltage boosting device, characterized by comprising: The on-vehicle voltage booster according to any one of claims 1 to 8, further comprising a housing (1) in which the on-vehicle voltage booster is provided.

10. The on-vehicle voltage boosting device according to claim 9, wherein: the housing (1) is provided with a waterproof breather valve (11) on a side surface thereof for maintaining the pressure balance inside the housing (1). the housing (1) is provided with a waterproof breather valve (11) on a side surface thereof for maintaining the pressure balance inside the housing (1).

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