JP2009146574A - Battery sensor module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery sensor module which changes a position of a sensor against a battery and directs a drawing-out direction of a harness toward a required direction. <P>SOLUTION: The battery sensor module 1 to be fixed on a battery post 105 arranged on an upper surface of a battery 100 includes a fitting portion 10 fixed to be fixed on the battery post 105, a battery sensor 20 to be fixed on the fitting portion 10, and a harness on an end portion of which a battery-side connecting terminal 41 to be electrically connected with the battery sensor 20. The fitting portion 10 is composed of an upper surface portion 11 to be fixed on the battery post 105, a side surface portion 12 to be formed by being bent from the upper surface portion 11, and the battery sensor 20 is fixed on the side surface portion 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a battery sensor module suitable for detecting the state of, for example, a vehicle battery.

  In general, a battery terminal with a battery sensor that is attached to a battery post (electrode) provided on the upper surface of an in-vehicle battery and monitors the remaining capacity of the in-vehicle battery is known (see, for example, Patent Documents 1 and 2).

Patent Document 1 includes a battery side terminal connected to a battery post of a battery, a harness side terminal connected to a terminal of the harness, and a current sensor connected between the battery side terminal and the harness side terminal. A battery terminal with a current sensor provided is described. Patent Document 2 describes a battery terminal with a current sensor provided with a battery post insertion portion for inserting a battery post into the current sensor. In these battery terminals with current sensors, the current sensor is provided on the upper surface of the battery.
JP 2002-141054 A (page 3, FIG. 1) JP 2007-214088 (page 6-7, FIG. 1)

  By the way, most of the general vehicle-mounted batteries have a large specific heat because they are mostly composed of an electrolytic solution. When placed in a certain temperature field, it takes about ten hours or more for the battery to match the environmental temperature. Therefore, for example, when the battery is arranged in the engine room, when the sensor is installed on a surface close to the engine, a temperature gradient is generated in which the outer surface of the sensor is hot and the surface in contact with the battery is cold. Here, when the temperature measurement unit is provided inside the sensor covered with the case, there is a problem that the measured temperature is different from the actual battery temperature. Therefore, the sensor is preferably installed on a surface that is not easily affected by the environmental temperature.

  However, in the module in which the mounting position of the sensor is fixed as in the prior art described above, there is a problem that the mounting position of the sensor on the battery cannot be changed according to the location of the battery.

  In addition, it is preferable that the harness constituting the module is changed in a pulling direction to a predetermined direction depending on a location of the battery and a position of the battery post in the battery. However, in the above-described conventional technology, the pulling direction is limited to one direction. There was a problem that has been.

  Therefore, in view of the above-described problems, the present invention mainly aims to provide a battery sensor module that can change the position of the sensor with respect to the battery, and provides a battery sensor module that can make the harness pull-out direction a desired direction. It is an issue to follow.

  In order to solve the above-described problem, a battery sensor module according to claim 1 of the present invention is a battery sensor module attached to a battery post provided on an upper surface of a battery, and a fixing portion attached to the battery post; A battery sensor attached to the fixed part; and a harness having a battery-side connection terminal electrically connected to the battery sensor at an end; and the fixed part is an upper surface part attached to the battery post. And a side surface portion formed by bending from the upper surface portion, and the battery sensor is attached to the side surface portion.

  According to the first aspect of the present invention, when the fixing portion is attached to the battery post, the side surface of the fixing portion to which the battery sensor is attached is selected so as to be along any one of the battery side surfaces. Can be attached. According to this, the battery sensor module can be mounted so that the battery sensor is positioned on the side surface of the battery that is less susceptible to heat, taking into account, for example, the surface that is susceptible to heat depending on the location of the battery. it can.

  The battery sensor module according to claim 2 of the present invention is the battery sensor module according to claim 1, wherein the battery-side connection terminal is attached to an axis orthogonal to the side surface portion, and the harness is the side surface portion. It is characterized in that it can be pulled out in a predetermined direction along the surface.

  According to the invention described in claim 2, when the battery sensor module is attached to the battery, the harness can be pulled out in a predetermined direction. For this reason, it is possible to change the drawing direction according to the connection position on the other end side of the harness.

  A battery sensor module according to a third aspect of the present invention is the battery sensor module according to the first or second aspect, wherein a case lower surface portion constituted by the side surface portion of the fixing portion, and the case lower surface portion. And a case upper surface portion attached to the lower surface of the case with the battery sensor sandwiched therebetween.

  According to the third aspect of the present invention, the battery sensor can be protected from external stress by including the case sandwiching the battery sensor.

  A battery sensor module according to a fourth aspect of the present invention is the battery sensor module according to the third aspect, wherein the upper surface of the case is made of metal.

  According to the fourth aspect of the present invention, the case upper surface portion is made of metal, so that a shielding function against electromagnetic waves can be provided.

  The battery sensor module according to claim 5 of the present invention is the battery sensor module according to any one of claims 1 to 4, wherein a protrusion projecting downward is provided on a lower surface of the upper surface portion. It is characterized by being provided.

  According to the invention described in claim 5, it is possible to prevent the battery sensor module from rattling on the upper surface of the battery by the protrusion.

  According to the battery sensor module of the present invention, the mounting position of the sensor with respect to the battery can be appropriately changed. In addition, according to the battery sensor module of the present invention, it is versatile because a single sensor can cope with the negative electrode of the battery in either the left or right position, reducing the number of parts, reducing the cost, and improving the degree of freedom of installation. Can be made.

  Hereinafter, a battery sensor module according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a state in which a battery sensor module 1 according to an embodiment of the present invention is attached to a side surface 101 of a battery 100 of a vehicle. FIG. 2 is a front view of the battery sensor module shown in FIG. 1 as viewed from the right side in FIG. FIG. 3 is a plan view showing the battery sensor module 1 shown in FIG.

  As shown in FIGS. 1 to 3, a battery sensor module 1 according to an embodiment of the present invention includes a fixing unit 10 having one end attached to a battery post 105 and holding the battery sensor 20 via a case 30, and a fixing unit. 10 includes a battery sensor 20 (shown only in FIG. 1) and a harness 40 (shown in FIGS. 2 and 3) having a battery-side connection terminal electrically connected to the battery sensor 20 at the end. ing.

  The fixing part 10 is made of a metal having excellent conductivity, such as copper, aluminum alloy, iron, stainless steel, etc., and is fixed to the fixing plate upper surface part 11 attached to the battery post 105 and the fixing plate upper surface part 11 to bend the battery. The battery sensor 20 is attached to the fixed plate side surface portion 12 via the case 30. The fixed plate side surface portion 12 extends along the side surface.

  The fixing plate side surface portion 12 of the fixing portion 10 constitutes a case lower surface portion 32 that sandwiches and holds the battery sensor 20, and a case upper surface portion 31 that is attached to the case lower surface portion 32 with the battery sensor 20 interposed therebetween is provided. Yes. The case upper surface portion 31 and the case lower surface portion 32 are clamped and fixed at both ends by a bolt 51 (61) that forms an axis in this embodiment and a nut 52 (62) that is screwed to the bolt 51 (61). The case upper surface portion 31 is made of a metal having excellent conductivity such as copper, aluminum alloy, iron, and stainless steel, and protects the battery sensor 20 from external stress and shields electromagnetic noise. . In addition, the case upper surface portion 31 has a size that completely covers the battery sensor 20 in order to widen the protection range from electromagnetic waves to the battery sensor 20.

  On the other hand, the lower surface of the upper surface portion 11 of the fixing plate is provided with a protruding portion 11a protruding downward. In this way, when the battery post 105 protrudes from the protruding step 106 formed on the battery upper surface 109 by providing a protrusion 11a by bending a part of the fixed plate upper surface portion 11 downward, the battery post The battery sensor module 1 is supported at two points 105 and the projecting portion 11a to prevent the battery sensor module itself from rattling after being attached to the battery 100.

  Further, the end portion of the fixing plate upper surface portion 11 is formed as a half-cylindrical battery post mounting portion 11b that rises and partially has a fastening extension portion 11c. Then, a bolt is inserted into a fixing hole 11d formed in the extending portion 11c for tightening, and the battery post mounting portion 11b is firmly fixed to the battery post 105 via a nut. Further, a temperature sensor 25 of the battery sensor 20 is provided on the side surface of the battery post mounting portion 11b.

  The battery sensor 20 includes a shunt resistor 21 and a circuit board 22 mounted on the shunt resistor 21, and the periphery of the circuit board 22 is surrounded by a resin mold 23 (or a resin case). Property, vibration proof and moisture proof. Note that the battery sensor 20 in this embodiment is different from a normal current sensor that detects only the current value of the battery 100, and measures the current flowing through the battery 100 and the voltage, temperature, and impedance (internal resistance) values of the battery 100. And it is a highly functional sensor which detects the state (a charge rate, a deterioration degree, discharge capability, etc.) of the battery 100 by calculating by a unique algorithm.

  In the present embodiment, the temperature sensor 25 that measures the temperature of the battery 100 is provided outside the battery post mounting portion 11b of the fixed plate upper surface portion 11 as described above, but this mounting location is limited. Instead, for example, it can be incorporated in the battery sensor 20.

  The lower end 21a of the shunt resistor 21 of the battery sensor 100 and the lower end 12a of the fixing plate side surface portion 12 are fixed in a state of being in direct contact with each other by the tightening force of the bolt 61 and the nut 62, and are electrically connected to each other. In this embodiment, the upper end 21b of the fixing plate 21 and the upper end 12b of the fixing plate side surface portion 12 are fixed by the tightening force of the bolt 51 and the nut 52 while being electrically insulated from each other with an insulating material 71 made of a resin material interposed. Has been.

  Further, the lower end 31 a of the case upper surface portion 31 and the lower end 21 a of the shunt resistor 21 are fixed and electrically connected to each other by the tightening force of the bolt 61 and the nut 62, and the upper end 31 b of the case upper surface portion 31 is connected. The upper end 21b of the shunt resistor 21a is fixed by the tightening force of the bolt 51 and the nut 52 while being electrically insulated from each other via an insulating material 72 made of a resin material in this embodiment.

  The width of the case 30 and the battery sensor 20 is such that the battery sensor module 1 does not protrude from the battery side surfaces 101, 102,. .

  On the other hand, the battery-side connection terminal 41 of the harness 40 is inserted with a bolt 51 that forms an axis orthogonal to the surface on which the fixing plate side surface portion 12 is formed, and one surface contacts the shunt resistor 21 and the other surface is insulated. The bolts 51 and the nuts 52 are attached by the tightening force in contact with the material 72. And the harness 40 is pulled out to the horizontal direction one side (right side in FIG. 2) along the formation surface of the stationary plate side surface part 12 in this embodiment.

  When the shunt resistor 21, the fixing plate side surface portion 12, and the case upper surface portion 31 are fixed, the bolt 51 (61) and the nut 52 (62) are used as described above. The upper bolt 51 is fastened by a nut 52 with a washer 53 and a spring washer 54 interposed between the case upper surface portion 31 and the lower bolt 61 is also between the case upper surface portion 31 and a washer 63 and spring washer. 64 is interposed and tightened by a nut 62. In addition, the battery side connection terminal 41 of the harness 40 can be fixed at an arbitrary rotation angle within a range that does not interfere with the resin mold 23 around the bolt 51 orthogonal to the formation surface of the fixing plate side surface portion 12.

  The lower end 12a of the fixing plate side surface portion 12, the lower end 21a of the shunt resistor 21, and the lower end 31a of the case upper surface portion 31 are electrically connected to the lower bolt 61 and the nut 62, but the upper bolt 51 The nut 52 is electrically connected only to the upper end 12b of the fixing plate side surface portion 12 and the upper end 31b of the case upper surface portion 31, and is insulated from the shunt resistor 21 and the battery side connection terminal 41 via insulating materials 71 and 72. .

  The battery side connection terminal 41 of the harness 40 is electrically connected to the upper end 21 b of the shunt resistor 21, while the upper end 12 b of the fixing plate side surface portion 12 and the upper end 31 b of the case upper surface portion 31 are electrically connected. Connected in an insulated state. As a result, only the battery post 105, the fixed plate upper surface portion 11, the fixed plate side surface portion 12, the shunt resistor 21, the battery side connection terminal 41, and the harness 40 become conductive, and the current of the battery 100 is measured by the circuit board 22. It is possible.

  When the battery sensor module 1 according to the present embodiment has the above-described configuration, when the fixing portion 10 is attached to the battery post 105, the fixing plate side surface portion 12 of the fixing portion 10 to which the battery sensor 20 is attached is replaced with the battery side surface 101. , 102... Can be selected and attached so that the battery side surfaces 101, 102. Thus, for example, in consideration of the surface that is easily subjected to heat from the engine depending on the location of the battery 100, the battery sensor module can be attached to the side surfaces 101, 102,. As a result, a change in the resistance value due to heat of the shunt resistor 21 can be prevented, and a specific shift of the output of the high-performance battery sensor 20 that measures not only the current but also the voltage, impedance, and temperature is prevented. can do.

  The battery-side connection terminal 41 of the harness 40 is attached to a bolt 51 that forms an axis orthogonal to the formation surface of the fixing plate side surface portion 12, and the resin mold 23 around the bolt 51 orthogonal to the formation surface of the fixing plate side surface portion 12. The harness 40 can be pulled out in a desired direction in the direction along the formation surface of the fixing plate side surface portion 12. As a result, when the battery sensor module 1 is attached to the battery 100, the harness 40 can be pulled out in an appropriate direction without being affected by the restrictions on the harness wiring space in accordance with the mounting situation of the vehicle auxiliary equipment around the battery. it can. That is, the pulling direction can be changed according to the connection position on the other end side of the harness 40.

  Moreover, the battery sensor 20 can be protected from external stress by providing the case 30 with the battery sensor 20 interposed therebetween.

  Further, by making the case upper surface portion 31 made of metal, it is possible to ensure an electromagnetic wave shielding function that protects the above-described high-performance battery sensor 20 from the influence of electromagnetic waves.

  Further, since the lower surface of the fixed plate upper surface portion 11 is provided with a protruding portion 11a protruding downward, even when the battery post 105 is formed to protrude from the protruding step portion 106 on the upper surface of the battery. The battery sensor module 1 can be firmly fixed to the battery 100 by the two-point support of the protrusion 11a and the battery post mounting portion 11b that is in contact with the protrusion step 106. Can be prevented.

  Note that the case 30 may be an integrated structure in which a single metal plate is bent without dividing the case 30 into a case upper surface portion and a case lower surface portion as in the above-described embodiment.

  Moreover, although the connection part of the harness 40 and the shunt resistor 21 is provided on the upper side of the fixed plate side surface part 12 and the case upper surface part 31 in the above-described embodiment, this connection part may be provided on the lower side. That is, the harness 40 can be fixed to the lower end portion 21 a of the shunt resistor 21 via the bolt 61 and the nut 62 and pulled out from the lower side of the battery sensor module 1.

  In this case, a conduction path capable of measuring the current of the battery 100 with the circuit board 22 in the same manner as in the above-described embodiment by interposing an appropriate insulating material between the fixed plate side surface portion 12, the shunt resistor 21, and the case upper surface portion 31. Should be secured. By adopting such a configuration, the influence of the restrictions on the harness arrangement space received from the on-vehicle equipment around the battery is further reduced. That is, the case where the harness 40 can be led out only from the lower end of the battery sensor module 1 can be dealt with.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, It can implement with a various form.

  Although the case upper surface portion 31 does not necessarily have a size that completely covers the resin mold 23 as in the present embodiment, the size of the case upper surface portion 31 protects the battery sensor 20 from electromagnetic waves. The range can be widened, and the noise shielding effect is increased.

  In the present embodiment, the metal case 30 covering the battery sensor is provided, but the present invention is not limited to this, and when a sufficient measure against electromagnetic waves is taken, The case 30 can be omitted.

  In the present embodiment, the case upper surface portion 31 and the case lower surface portion 32 are fastened and fixed with bolts 51 (61) and nuts 52 (62). However, the present invention is not limited to this. Alternatively, both may be fixed by rivets or welding. According to such a structure, it can fix more firmly than the said embodiment.

  In addition, it is not always necessary to bend a part of the upper surface portion 11 of the fixing plate and provide the protrusion 11a as in the present embodiment, but by providing such a protrusion 11a, the battery sensor module 1 can be connected to the protrusion 11a. It is possible to prevent the battery sensor module 1 from rattling with respect to the battery 100 by being supported at two points by the battery post mounting portion 11 b in contact with the protruding step portion 106.

  Further, since the fixing plate side surface portion 12 of the battery sensor module 1 is disposed along the side surfaces 101, 102,... Of the battery 100, it is not necessary to adopt a configuration in which the upper surface of the battery is provided like a conventional current sensor. . As a result, the battery sensor module 1 can be prevented from rotating around the battery post 105.

  In addition, since the battery sensor module 100 is attached to the battery side surfaces 101, 102,..., The harness 40 can be taken out from either the left or right side of the battery. Even if it exists in position, it can respond with one battery sensor module 1, and can reduce a number of parts, cost reduction, and the freedom degree of attachment. That is, the left side of FIG. 4 is a case where the battery sensor module 1 is attached to a battery post 105a of a battery whose negative electrode is on the left side of the battery 100, and the right side of FIG. This is a case where the battery sensor module 1 is attached to the battery post 105b of the battery, and the battery sensor module according to the present invention can be attached to both aspects.

It is a side view which shows the state which attached the battery sensor module which concerns on one Embodiment of this invention to the side surface of the battery of a vehicle. It is a front view which shows the battery sensor module shown in FIG. 1 from the right side of FIG. It is a top view which shows the battery sensor module shown in FIG. 1 from the upper direction of a battery. It is a perspective view which shows simultaneously two different forms which actually attached the battery sensor module shown in FIG. 1 to the battery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Battery sensor module 10 Fixing part 11 Fixing plate upper surface part 11a Protrusion part 11b Battery post attachment part 11c Clamping extension part 11d Fixing hole 12 Fixing plate side part 12a Lower end 12b Upper end of fixing plate side part 20 Battery sensor 21 Shunt resistor 21a Lower end of shunt resistor 21b Upper end of shunt resistor 22 Circuit board 23 Resin mold 25 Temperature sensor 30 Case 31 Case upper surface portion 31a Lower end of case upper surface portion 31b Upper end of case upper surface portion 32 Case lower surface portion 40 Harness 41 Battery side connection terminal 51 Bolt 52 Nut 53 Washer 54 Spring Washer 61 Bolt 62 Nut 63 Washer 64 Spring Washer 71 Insulation Material 72 Insulation Material 100 Battery 101, 102,... Battery Side 105 Battery Post 05a Battery left battery post 105b Battery right battery posts 106 projecting step portion 109 battery top

Claims (5)

A battery sensor module attached to a battery post provided on the upper surface of the battery,
A fixing part attached to the battery post;
A battery sensor attached to the fixed part;
A harness having a battery side connection terminal electrically connected to the battery sensor at an end, and
The battery sensor module is characterized in that the fixing portion includes an upper surface portion attached to the battery post and a side surface portion formed by bending from the upper surface portion, and the battery sensor is attached to the side surface portion. .   The said battery side connection terminal is attached to the axis | shaft orthogonal to the said side part, The said harness was comprised so that it could pull out to a predetermined | prescribed direction along the surface of the said side part. Battery sensor module.   A case comprising: a case lower surface portion configured from the side surface portion of the fixed portion; and a case upper surface portion attached to the case lower surface portion with the battery sensor sandwiched between the case lower surface portion. The battery sensor module according to claim 1, wherein the battery sensor module is provided.   The battery sensor module according to claim 3, wherein the case upper surface portion is made of metal.   The battery sensor module according to any one of claims 1 to 4, wherein a protrusion projecting downward is provided on a lower surface of the upper surface portion.

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