Resistor for current detection, current detection device and manufacturing method thereof
A technology for current detection and resistors, applied in resistor manufacturing, resistors, measuring devices, etc., can solve the problems of heavy burden and low resistance value, and achieve the effect of reducing the burden
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no. 1 approach
[0040] First, a current detection device using a resistor according to a first embodiment of the present invention will be described. figure 1 It is a perspective view showing a configuration example of a current detection device using a resistor according to this embodiment. figure 1 The shown current detection device 1 using a shunt resistor (hereinafter referred to as "resistor") includes: two electrodes 5a (first electrode), 5b (second electrode), and a resistor disposed between the electrodes 5a, 5b. Body 3, voltage detection terminal 17. In addition, the portion constituted by the resistor 3 and the electrodes 5a and 5b is also referred to as a conductor. In addition, the electrodes 5a and 5b are also called electrode terminals. The electrodes 5a and 5b each include: a main electrode part on the end side (the part of 5a and 5b other than 5c and 5d is defined as the main electrode part), and the width is only 2W narrower than that of the main electrode part. 2 The narr...
no. 2 approach
[0048] Next, a method of manufacturing a current detection device using a resistor according to a second embodiment of the present invention will be described. As an example of a current detection device using a resistor manufactured as figure 1 The current sensing device shown.
[0049] Figure 2 to Figure 4 It is a figure which shows the manufacturing method of the electric current detection apparatus using the resistor of this embodiment, and is a figure which shows a set of plan view and cross-sectional view.
[0050] Such as figure 2 As shown in (a), first, an electrode member 31 having high conductivity such as Cu is prepared.
[0051] Such as figure 2 As shown in (b), the bolt hole 15 for screw locking and the hole 33 for inserting the resistance element are formed in the electrode member 31 by methods such as punching, cutting, and laser processing. One hole portion 33 is provided at approximately the center of the electrode member 31 , and a pair of bolt holes ...
no. 3 approach
[0066] Next, a current detection device having a code display unit according to a third embodiment of the present invention will be described. figure 1 The shown code display unit 12 includes, for example, the following data and the like. That is, the content of the code is lot number, product name, value indicating characteristics (resistance value, TCR value, etc.), material used (resistor material, etc.), manufacturer, manufacturing address, manufacturing date, user information (provided company name, etc.) Wait. In particular, after the resistor is manufactured, the combination of the lot number and the resistance value, or the code display of the TCR value data is added to it, so that the user who is provided with the current detection device, for example, can know without actually measuring the resistance value. Accurate data, etc., very convenient. The values representing the characteristics are preferably actual measured values, but may also be designed values. For...
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