WO2019148617A1 - 具有新型电流检测组件的小型断路器 - Google Patents

具有新型电流检测组件的小型断路器 Download PDF

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Publication number
WO2019148617A1
WO2019148617A1 PCT/CN2018/080748 CN2018080748W WO2019148617A1 WO 2019148617 A1 WO2019148617 A1 WO 2019148617A1 CN 2018080748 W CN2018080748 W CN 2018080748W WO 2019148617 A1 WO2019148617 A1 WO 2019148617A1
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WO
WIPO (PCT)
Prior art keywords
magnetic field
field sensor
circuit breaker
hall magnetic
detecting
Prior art date
Application number
PCT/CN2018/080748
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English (en)
French (fr)
Inventor
魏首勋
Original Assignee
深圳曼顿科技有限公司
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Publication of WO2019148617A1 publication Critical patent/WO2019148617A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers

Definitions

  • the invention relates to the technical field of low-voltage electrical protection, in particular to a miniature circuit breaker with a novel current detecting component.
  • the circuit breaker is divided into a high voltage circuit breaker and a low voltage circuit breaker according to its use range.
  • Low-voltage circuit breaker also known as automatic switch, is an electrical appliance that has both manual switching and automatic voltage loss, undervoltage, overload, and short-circuit protection. It can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off circuits when they are severely overloaded or short-circuited or under-voltage faults. Their functions are equivalent to fuse switches and A combination of thermal relays, etc., and generally no need to change parts after breaking the fault current has been widely used.
  • current transformers are generally used to detect the current flowing through the circuit breaker.
  • the current transformer is based on the principle of electromagnetic induction to realize current detection.
  • the current transformer is composed of a closed core and a winding. When the current flowing through the current transformer is too large, the magnetic core is in a saturated state, and the detected current is attenuated, so that the detected current value is inaccurate, and the timing of closing and opening of the circuit breaker cannot be accurately determined.
  • the main object of the present invention is to provide a miniature circuit breaker and a circuit breaker having a novel current detecting component, which aims to solve the technical problem that the current transformer in the prior art circuit breaker cannot accurately detect the current magnitude.
  • embodiments of the present invention provide a miniature circuit breaker having a novel current detecting assembly including a circuit breaker body and a novel current detecting component, the novel current detecting component including a Hall magnetic field sensor, a current detecting wire, and a Hall magnetic field sensor detecting circuit board, wherein the Hall magnetic field sensor is electrically connected to the Hall magnetic field sensor detecting circuit board;
  • the external current flows through the current detecting wire, and the Hall magnetic field sensor detects a current flowing through the current detecting wire, and the detected magnetic field is processed by the Hall magnetic field sensor detecting circuit board to obtain a current flowing through the current detecting wire, and the current will be The magnitude of the detected current is transferred to the control board of the circuit breaker body.
  • the Hall magnetic field sensor is a coreless magnetic field sensor.
  • the Hall magnetic field sensor comprises a detection Hall magnetic field sensor and an environmental Hall magnetic field sensor.
  • the detection Hall magnetic field sensor is configured to detect a magnetic field generated by a current flowing through the current detecting wire.
  • the detection Hall magnetic field sensor is further configured to acquire a magnetic field around the detection Hall magnetic field sensor.
  • the ambient Hall magnetic field sensor is configured to acquire a magnetic field around the detection Hall magnetic field sensor.
  • the current detecting wire is a copper wire.
  • the current detecting wire is set to a U shape, and the bent portion of the U-shaped current detecting wire is close to the detecting Hall magnetic field sensor.
  • the miniature circuit breaker having the novel current detecting component further includes a fixing bracket connected to the current detecting wire.
  • the fixing bracket is fixedly connected with the current detecting wire, and the fixing bracket is connected to the circuit breaker main body.
  • the invention discloses a miniature circuit breaker with a novel current detecting component
  • the miniature circuit breaker with the novel current detecting component comprises: a Hall magnetic field sensor, a current detecting wire and a Hall magnetic field sensor detecting circuit board; the current flows through the current Detecting a wire, the Hall magnetic field sensor detects a magnetic field generated by the current flowing through the current detecting wire, and the detected magnetic field is processed by the Hall magnetic field sensor detecting circuit board to obtain a current flowing through the current detecting wire, and the detected current amount Passed to the control board of the circuit breaker body.
  • the magnetic field generated by the current detecting wire is detected by the detecting Hall magnetic field sensor in the magnetic field sensor without magnetic core, and the environmental magnetic field sensor detects the background magnetic field in the environment, and detects the detection of the Hall magnetic field sensor and the environmental Hall magnetic field sensor.
  • the difference is processed to obtain the current magnitude, and the interference of the background magnetic field is excluded, so that the detected current is more accurate, so that the miniature circuit breaker with the novel current detecting component can be accurately opened and closed.
  • FIG. 1 is a schematic structural view of an embodiment of a miniature circuit breaker having a novel current detecting assembly according to the present invention
  • FIG. 2 is a schematic structural view of an embodiment of a novel current detecting component in a miniature circuit breaker having a novel current detecting component according to the present invention
  • FIG. 3 is a schematic diagram of a magnetic field detected in an embodiment of a novel current detecting component of a miniature circuit breaker having a novel current detecting component according to the present invention
  • FIG. 4 is a schematic diagram showing the circuit detection principle of an embodiment of a novel current detecting component in a miniature circuit breaker having a novel current detecting component according to the present invention.
  • FIG. 5 is a schematic view showing the appearance of a miniature circuit breaker having a novel current detecting component according to the present invention.
  • first, second, and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.
  • fixed may be a fixed connection, a detachable connection, or an integral; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. It may be the internal connection of two elements or the interaction of two elements unless explicitly defined otherwise.
  • specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the present invention provides a miniature circuit breaker having a novel current detecting assembly, as shown in FIGS. 1 to 3, in a miniature circuit breaker having a novel current detecting assembly of the present invention, the miniature circuit breaker having the novel current detecting assembly includes a circuit breaker body and a novel current detecting component, the novel current detecting component comprising: a Hall magnetic field sensor 1, a current detecting wire 2 and a Hall magnetic field sensor detecting circuit board 3, a Hall magnetic field sensor 1 and a Hall magnetic field sensor detecting circuit board 3 electrical connection; an external current flows through the current detecting wire 2, and the Hall magnetic field sensor 1 detects a magnetic field generated by the current flowing through the current detecting wire 2, and the detected magnetic field is processed by the Hall magnetic field sensor detecting circuit board 3 to obtain a flow.
  • the magnitude of the current detected by the current detecting wire 2 is transmitted to the control circuit board of the circuit breaker main body (not shown).
  • the Hall magnetic field sensor 1 is used to detect a magnetic field flowing in the vicinity of the current detecting wire 2, and the detected magnetic field is processed to obtain a current flowing through a circuit breaker provided with the miniature circuit breaker having the novel current detecting component, wherein Hall
  • the magnetic field sensor detecting circuit board 3 may be provided separately or integrally with the control circuit board of the circuit breaker main body.
  • the Hall magnetic field sensor 1 includes a detecting Hall magnetic field sensor 11 and an environmental Hall magnetic field sensor 12;
  • the magnetic field sensor 11 is for detecting a magnetic field generated by a current flowing through the current detecting wire 2 and detecting a magnetic field around the Hall magnetic field sensor 11;
  • the environmental Hall magnetic field sensor 12 is for acquiring a magnetic field around the detecting Hall magnetic field sensor 11.
  • the detection Hall magnetic field sensor 11 detects the magnetic field generated by the current flowing through the current detecting wire 2, and of course includes the magnetic field generated in the circuit breaker environment. Therefore, the magnetic field intensity detected by the detecting Hall magnetic field sensor 11 is a current flowing through the current detecting wire 2 The superposition of the generated magnetic field and the environmental magnetic field.
  • the ambient Hall magnetic field sensor 12 detects only the strength of the magnetic field generated in the environment of the circuit breaker. In this way, by separately detecting the magnetic field intensity detected by the Hall magnetic field sensor 11 and the magnetic field strength detected by the environmental Hall magnetic field sensor 12, the interference of the environmental magnetic field can be eliminated, and the magnetic field generated by the current detecting wire 2 can be obtained. The magnitude of the current flowing through the current detecting wire 2 is calculated.
  • both the detected Hall magnetic field sensor 11 and the current detecting lead 2 are brought close to each other, so that the detected Hall magnetic field sensor 11 better detects the intensity of the magnetic field generated by the current flowing through the current detecting lead 2.
  • the current detecting wire 2 and the ambient Hall magnetic field sensor 12 are separated from each other, so that the environmental Hall magnetic field sensor 12 is not affected by the current flowing through the current detecting wire 2 to generate a magnetic field, and the magnetic field strength in the circuit breaker environment is more accurately detected.
  • the detection Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 are both close to each other, so that the environmental magnetic field detected by the environmental Hall magnetic field sensor 12 and the environmental magnetic field in the vicinity of the detection Hall magnetic field sensor 11 are as close as possible, thereby It is better to calculate the intensity of the magnetic field generated by the current flowing through the current detecting wire 2, thereby more accurately obtaining the current flowing through the current detecting wire 2.
  • the distance between the detection Hall magnetic field sensor 11 and the current detecting wire 2 is set to L1
  • the distance between the detecting Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 is set to L2.
  • the distance between the current detecting wire 2 and the environmental Hall magnetic field sensor 12 is set to L3, then, preferentially, first, L1 is as small as possible, L3 is again as large as possible, and finally, L2 is greater than L1 and smaller than L3; L2 is as small as possible while satisfying that L2 is larger than L1 and smaller than L3.
  • the current detecting wire 2 is a copper wire, and the current detecting wire 2 is set to a U-shape, and the U-shaped current detecting wire 2 The bent portion is adjacent to the detection Hall magnetic field sensor 11.
  • the current detecting wire 2 is not limited to a copper wire, and an electrically conductive conductor can be used as the current detecting wire 2.
  • the current detecting wire 2 is set to a U shape, on the one hand, the size of the miniature circuit breaker provided with the novel current detecting component can be reduced.
  • the current detecting wire 2 is It is set to a U shape, and the detection Hall magnetic field sensor 11 is disposed at a bent portion of the lower end of the U-shaped current detecting wire 2, and the environmental Hall magnetic field sensor 12 is disposed close to the detecting Hall magnetic field sensor 11, so that the Hall magnetic field is detected.
  • the sensor 11 is close to the current detecting lead 2.
  • the current detecting lead 2 Since the current detecting lead 2 is U-shaped, the current detecting lead 2 extends upward except for the bent portion of the lower end, so that the ambient Hall magnetic field sensor 12 is away from the current detecting lead 2, thereby realizing detection.
  • the Hall magnetic field sensor 11 and the current detecting wire 2 are close to each other, and the current detecting wire 2 and the environmental Hall magnetic field sensor 12 are apart from each other, and both the detecting Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 are close to each other.
  • the current detecting lead 2 is provided in a U-shape, and the two sides of the U-shaped current detecting lead are arranged in parallel (not shown) except for the bent portion, so that current can flow through both sides of the current detecting lead 2
  • the wires are arranged in parallel, the magnetic fields generated on the wires arranged in parallel on both sides cancel each other out, reducing the interference of the magnetic field in the environment, so that the magnetic field strength in the environment detected by the environmental Hall magnetic field sensor 12 is more accurate, and thus, better elimination The interference of the magnetic field in the environment.
  • the miniature circuit breaker having the novel current detecting component of the present invention further comprises a fixing bracket 4, the fixing bracket 4 and the current detecting wire 2 connection; the fixing bracket 4 is fixedly connected with the current detecting wire 2, and the fixing bracket 4 is connected to the circuit breaker main body.
  • the current detecting wire 2 is connected to the circuit breaker main body through the fixing bracket 4, so that the current detecting wire 2 is fixed to the circuit breaker main body, thereby fixing the positions of the detecting Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12.
  • the detection Hall magnetic field sensor 11 is disposed close to the current detecting wire 2, and the current detecting wire 2 is induced; the environmental Hall magnetic field sensor 12 is disposed close to the detecting Hall magnetic field sensor 11, but away from the current detecting wire 2, Further, the environmental interference is excluded; the difference between the outputs of the Hall magnetic field sensor 11 and the ambient Hall magnetic field sensor 12 is detected as an input signal of the differential amplifier, and the magnitude of the current is detected, and the detected current can be detected without attenuation or interference. More accurate, to ensure that the small circuit breaker with the new current detection component accurately performs the operation control of opening and closing.
  • the two directional arrows on the current detecting lead 2 indicate the flow direction I of the current, and the current detecting lead 2
  • An arcuate arrow on the U-shaped lower end bend indicates that a current flows through the current detecting wire 2 to generate a magnetic field E1, and is detected by the detecting Hall magnetic field sensor 11, and two arrows pointing to the detecting Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12
  • the magnetic field E2 in the environment in the circuit breaker detected by the detected Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 is indicated.
  • FIG. 3 the two directional arrows on the current detecting lead 2 indicate the flow direction I of the current
  • the current detecting lead 2 An arcuate arrow on the U-shaped lower end bend indicates that a current flows through the current detecting wire 2 to generate a magnetic field E1, and is detected by the detecting Hall magnetic field sensor 11, and two arrows pointing to the detecting Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12
  • the unipolar output of the detected Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 is combined to form a differential output, and the interference of the environmental magnetic field E2 is excluded, and the Hall magnetic field sensor 11 and the environmental Hall magnetic field sensor 12 are detected.
  • the difference of the output is used as input information of the differential amplifier to detect the magnitude of the current flowing through the current detecting lead 2.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

本发明提供一种具有新型电流检测组件的小型断路器，包括断路器主体和新型电流检测组件，所述新型电流检测组件包括：霍尔磁场传感器、电流检测导线和霍尔磁场传感器检测电路板；通过无磁芯的霍尔磁场传感器中的检测霍尔磁场传感器检测电流检测导线产生的磁场，环境霍尔磁场传感器检测环境中的背景磁场，将检测霍尔磁场传感器和环境霍尔磁场传感器的检测到的差值进行处理得到电流大小，排除背景磁场的干扰，使得检测得到电流更加准确，从而使得设置有该具有新型电流检测组件的断路器准确的进行分闸和合闸。

Description

具有新型电流检测组件的小型断路器
技术领域
本发明涉及低压电器保护技术领域，尤其涉及一种具有新型电流检测组件的小型断路器。
背景技术
断路器按其使用范围分为高压断路器和低压断路器。低压断路器又称自动开关，它是一种既有手动开关作用，又能自动进行失压、欠压、过载、和短路保护的电器。它可用来分配电能，不频繁地启动异步电动机，对电源线路及电动机等实行保护，当它们发生严重的过载或者短路及欠压等故障时能自动切断电路，其功能相当于熔断器式开关与过欠热继电器等的组合，而且在分断故障电流后一般不需要变更零部件，已获得了广泛的应用。
现在的断路器中一般采用电流互感器来检测流经断路器的电流大小，电流互感器是依据电磁感应原理实现电流大小检测，电流互感器是由闭合的铁心和绕组组成。当流经电流互感器的电流过大，磁芯处于饱和状态，检测到的电流出现衰减，使得检测到的电流值大小不准确，无法准确判断断路器的合闸和分闸的时机。
发明内容
本发明的主要目的在于提供一种具有新型电流检测组件的小型断路器及断路器，旨在解决现有技术中断路器中使用电流互感器无法准确检测电流大小的技术问题。
为实现上述目的，本发明实施例提供一种具有新型电流检测组件的小型断路器，所述具有新型电流检测组件的小型断路器包括断路器主体和新型电流检测组件，所述新型电流检测组件包括：霍尔磁场传感器、电流检测导线和霍尔磁场传感器检测电路板，所述霍尔磁场传感器与霍尔磁场传感器检测电路板电性连接；
外部电流流经电流检测导线，霍尔磁场传感器检测电流流经电流检测导线产生的磁场，所述检测到的磁场经霍尔磁场传感器检测电路板处理，得到流经电流检测导线的电流大小，将检测到的电流大小传递至断路器主体的控制电路板。
可选地，所述霍尔磁场传感器为无磁芯的霍尔磁场传感器。
可选地，所述霍尔磁场传感器包括检测霍尔磁场传感器和环境霍尔磁场传感器。
可选地，所述检测霍尔磁场传感器用于检测电流流经电流检测导线产生的磁场。
可选地，所述检测霍尔磁场传感器还用于获取检测霍尔磁场传感器周围的磁场。
可选地，所述环境霍尔磁场传感器用于获取检测霍尔磁场传感器周围的磁场。
可选地，所述电流检测导线为铜线。
可选地，所述电流检测导线设置为U型，U型电流检测导线的弯折部靠近检测霍尔磁场传感器。
可选地，所述具有新型电流检测组件的小型断路器还包括固定支架，所述固定支架与电流检测导线连接。
可选地，所述固定支架与电流检测导线之间固定连接，所述固定支架与断路器主体连接。
本发明公开了一种具有新型电流检测组件的小型断路器，所述具有新型电流检测组件的小型断路器包括：霍尔磁场传感器、电流检测导线和霍尔磁场传感器检测电路板；电流流经电流检测导线，霍尔磁场传感器检测电流流经电流检测导线产生的磁场，所述检测到的磁场经霍尔磁场传感器检测电路板处理，得到流经电流检测导线的电流大小，将检测到的电流大小传递至断路器主体的控制电路板。通过无磁芯的霍尔磁场传感器中的检测霍尔磁场传感器检测电流检测导线产生的磁场，环境霍尔磁场传感器检测环境中的背景磁场，将检测霍尔磁场传感器和环境霍尔磁场传感器的检测到的差值进行处理得到电流大小，排除背景磁场的干扰，使得检测得到电流更加准确，从而使得该具有新型电流检测组件的小型断路器准确的进行分闸和合闸。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明具有新型电流检测组件的小型断路器的一实施例的结构示意图；
图2为本发明具有新型电流检测组件的小型断路器中新型电流检测组件一实施例的结构示意图；
图3为本发明具有新型电流检测组件的小型断路器中新型电流检测组件一实施例中检测的磁场的示意图；
图4为本发明具有新型电流检测组件的小型断路器中新型电流检测组件一实施例的电路检测原理示意图。
图5为本发明具有新型电流检测组件的小型断路器外观结构示意图。
附图标号说明：
标号 名称 标号 名称
1 霍尔磁场传感器 2 电流检测导线
3 霍尔磁场传感器检测电路板 4 固定支架
11 检测霍尔磁场传感器 12 环境霍尔磁场传感器
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
在本发明中，除非另有明确的规定和限定，术语“连接”、“固定”
等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
另外，本发明各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
本发明提供一种具有新型电流检测组件的小型断路器，如图1至3所示，在本发明一种具有新型电流检测组件的小型断路器，所述具有新型电流检测组件的小型断路器包括断路器主体和新型电流检测组件，所述新型电流检测组件包括：霍尔磁场传感器1、电流检测导线2和霍尔磁场传感器检测电路板3，霍尔磁场传感器1与霍尔磁场传感器检测电路板3电性连接；外部电流流经电流检测导线2，霍尔磁场传感器1检测电流流经电流检测导线2产生的磁场，所述检测到的磁场经霍尔磁场传感器检测电路板3处理，得到流经电流检测导线2的电流大小，将检测到的电流大小传递至断路器主体的控制电路板（图中未示出）。
使用霍尔磁场传感器1检测流经电流检测导线2附近的磁场，对检测到的磁场进行处理，得到流经设置有该具有新型电流检测组件的小型断路器的断路器的电流大小，其中霍尔磁场传感器检测电路板3可以单独设置也可以与断路器主体的控制电路板一体设置。使用无磁芯的霍尔磁场传感器1，不会出现磁芯饱和的情况，避免了在检测过程中，电流过大，磁芯饱和而使检测到的电流大小衰减，进而，无法准确检测到流经断路器电流的大小。将检测到的电流大小传递至断路器主体的控制电路板，进而控制电路板准确控制断路器中分合闸装置对线路进行分合闸操作。
进一步地，在本发明一种具有新型电流检测组件的小型断路器的一实施例中，所述霍尔磁场传感器1包括检测霍尔磁场传感器11和环境霍尔磁场传感器12；所述检测霍尔磁场传感器11用于检测电流流经电流检测导线2产生的磁场和检测霍尔磁场传感器11周围的磁场；所述环境霍尔磁场传感器12用于获取检测霍尔磁场传感器11周围的磁场。
检测霍尔磁场传感器11检测电流流经电流检测导线2产生的磁场，当然还包括断路器环境中产生的磁场，因此，检测霍尔磁场传感器11检测到的磁场强度是电流流经电流检测导线2产生的磁场和环境磁场的叠加。而环境霍尔磁场传感器12只对断路器环境中产生的磁场强度进行检测。如此，将检测霍尔磁场传感器11检测到的磁场强度与环境霍尔磁场传感器12检测到的磁场强度进行差分处理，即可排除掉环境磁场的干扰，得到通过电流检测导线2产生的磁场，进而推算出流经电流检测导线2的电流大小。
在本实施例中，将检测霍尔磁场传感器11与电流检测导线2两者彼此靠近，从而使得检测霍尔磁场传感器11更好的检测到电流流经电流检测导线2产生的磁场强度。将电流检测导线2与环境霍尔磁场传感器12彼此远离，从而使得环境霍尔磁场传感器12不受电流流经电流检测导线2产生磁场的影响，更准确的检测出断路器环境中的磁场强度。将检测霍尔磁场传感器11和环境霍尔磁场传感器12两者彼此靠近，进而，使得环境霍尔磁场传感器12检测到的环境磁场与检测霍尔磁场传感器11附近的环境磁场尽可能一致，从而可以更好的计算出电流流经电流检测导线2产生的磁场强度，进而更准确的得到流经电流检测导线2的电流大小。
具体地，将检测霍尔磁场传感器11与电流检测导线2两者之间的距离设定为L1，将检测霍尔磁场传感器11和环境霍尔磁场传感器12两者之间的距离设定为L2，将电流检测导线2与环境霍尔磁场传感器12两者之间的距离设定为L3，那么，优先地，首先，L1尽可能的小，再次L3尽可能大，最后，L2大于L1且小于L3；在满足L2大于L1且小于L3的条件下，L2尽可能小。
进一步地，在本发明一种具有新型电流检测组件的小型断路器的一实施例中，所述电流检测导线2为铜线，所述电流检测导线2设置为U型，U型电流检测导线2的弯折部靠近检测霍尔磁场传感器11。
电流检测导线2不限定为铜线，能够导电的导电体都可以作为电流检测导线2。
将电流检测导线2设置为U型，一方面可以减小设置有该具有新型电流检测组件的小型断路器的大小，另一方面，结合上述实施例，如图2所示，将电流检测导线2设置为U型，并将检测霍尔磁场传感器11设置于U型电流检测导线2的下端的弯折部，将环境霍尔磁场传感器12靠近检测霍尔磁场传感器11设置，如此，检测霍尔磁场传感器11与电流检测导线2靠近，由于电流检测导线2为U型，电流检测导线2除下端的弯折部外，向上延伸，如此环境霍尔磁场传感器12远离电流检测导线2，从而实现了检测霍尔磁场传感器11与电流检测导线2两者彼此靠近，电流检测导线2与环境霍尔磁场传感器12彼此远离，检测霍尔磁场传感器11和环境霍尔磁场传感器12两者彼此靠近。
再者，电流检测导线2设置成U型，除弯折部外，U型电流检测导线的两侧平行设置（图中未示出），如此，可以在电流流经电流检测导线2的两侧平行设置的导线时，两侧平行设置的导线上产生的磁场相互抵消，减少环境中磁场的干扰，使得环境霍尔磁场传感器12检测到的环境中的磁场强度更准确，进而，更好的排除掉环境中磁场的干扰。
可选地，在本发明一种具有新型电流检测组件的小型断路器的一实施例中，所述具有新型电流检测组件的小型断路器还包括固定支架4，所述固定支架4与电流检测导线2连接；所述固定支架4与电流检测导线2之间固定连接，所述固定支架4与断路器主体连接。
通过固定支架4将电流检测导线2与断路器主体进行连接，从而使得电流检测导线2固定在断路器主体上，进而固定检测霍尔磁场传感器11和环境霍尔磁场传感器12的位置。
在上述实施例中，将检测霍尔磁场传感器11靠近电流检测导线2设置，感应电流检测导线2磁场；将环境霍尔磁场传感器12靠近检测霍尔磁场传感器11设置，但是远离电流检测导线2，进而，排除环境干扰；将检测霍尔磁场传感器11和环境霍尔磁场传感器12的输出的差值作为差分放大器的输入信号，检测电流大小，在无衰减、无干扰的情况下可使检测的电流更为准确，确保该具有新型电流检测组件的小型断路器准确的进行分闸和合闸的操作控制。
为辅助理解本发明具有新型电流检测组件的小型断路器的检测原理，如图3和4所示，图3中，电流检测导线2上的两个方向箭头表示电流的流向I，电流检测导线2 U型下端弯曲部上弧形箭头表示电流流经电流检测导线2产生磁场E1，并被检测霍尔磁场传感器11检测到，两个指向检测霍尔磁场传感器11和环境霍尔磁场传感器12的箭头表示被检测霍尔磁场传感器11和环境霍尔磁场传感器12检测到的断路器中环境中的磁场E2。如图4所示，将检测霍尔磁场传感器11和环境霍尔磁场传感器12的单极输出组成差分输出，排除环境磁场E2的干扰，将检测霍尔磁场传感器11和环境霍尔磁场传感器12的输出的差值作为差分放大器的输入信息，检测流经电流检测导线2的电流的大小。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (15)

  1. 一种具有新型电流检测组件的小型断路器，所述具有新型电流检测组件的小型断路器包括断路器主体和新型电流检测组件，其特征在于，所述新型电流检测组件包括：霍尔磁场传感器、电流检测导线和霍尔磁场传感器检测电路板，所述霍尔磁场传感器与霍尔磁场传感器检测电路板电性连接；
    外部电流流经电流检测导线，霍尔磁场传感器检测电流流经电流检测导线产生的磁场，所述检测到的磁场经霍尔磁场传感器检测电路板处理，得到流经电流检测导线的电流大小，将检测到的电流大小传递至断路器主体的控制电路板。
  2. 如权利要求1所述的具有新型电流检测组件的小型断路器，其特征在于，所述霍尔磁场传感器为无磁芯的霍尔磁场传感器。
  3. 如权利要求2所述的具有新型电流检测组件的小型断路器，其特征在于，所述霍尔磁场传感器包括检测霍尔磁场传感器和环境霍尔磁场传感器。
  4. 如权利要求3所述的具有新型电流检测组件的小型断路器，其特征在于，所述环境霍尔磁场传感器用于获取检测霍尔磁场传感器周围的磁场。
  5. 如权利要求3所述的具有新型电流检测组件的小型断路器，其特征在于，所述检测霍尔磁场传感器用于检测电流流经电流检测导线产生的磁场。
  6. 如权利要求5所述的具有新型电流检测组件的小型断路器，其特征在于，所述检测霍尔磁场传感器还用于获取检测霍尔磁场传感器周围的磁场。
  7. 如权利要求1所述的具有新型电流检测组件的小型断路器，其特征在于，所述电流检测导线设置为U型。
  8. 如权利要求7所述的具有新型电流检测组件的小型断路器，其特征在于，所述电流检测导线为铜线。
  9. 如权利要求7所述的具有新型电流检测组件的小型断路器，其特征在于，所述霍尔磁场传感器为无磁芯的霍尔磁场传感器。
  10. 如权利要求9所述的具有新型电流检测组件的小型断路器，其特征在于，所述霍尔磁场传感器包括检测霍尔磁场传感器和环境霍尔磁场传感器。
  11. 如权利要求10所述的具有新型电流检测组件的小型断路器，其特征在于，所述环境霍尔磁场传感器用于获取检测霍尔磁场传感器周围的磁场。
  12. 如权利要求10所述的具有新型电流检测组件的小型断路器，其特征在于，所述检测霍尔磁场传感器靠近U型电流检测导线的弯折部，用于检测电流流经电流检测导线产生的磁场。
  13. 如权利要求12所述的具有新型电流检测组件的小型断路器，其特征在于，所述检测霍尔磁场传感器还用于获取检测霍尔磁场传感器周围的磁场。
  14. 如权利要求1所述的具有新型电流检测组件的小型断路器，其特征在于，所述具有新型电流检测组件的小型断路器还包括固定支架，所述固定支架与电流检测导线连接。
  15. 如权利要求14所述的具有新型电流检测组件的小型断路器，其特征在于，所述固定支架与电流检测导线之间固定连接，所述固定支架与断路器主体连接。
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