JP6210547B2 - Battery status detection device and battery post terminal - Google Patents

Description

  The present invention relates to a battery state detection device in which a battery state detection sensor is attached to a battery post terminal, and a battery post terminal used in the battery state detection device.

  In recent vehicles, electrical components such as navigation devices, electronic control devices for engines, an idling stop function, and the like tend to be added, and the load on the battery is increasing. Therefore, it is desired to install a battery state detection device for monitoring a decrease in the charging rate of the battery.

  As shown in FIG. 8, the battery state detection device 100 is a battery post terminal 101 assembled with a battery state detection sensor 102, and is attached to a battery post 104 of a battery 103. The battery state detection sensor 102 is attached in a cantilever structure by a detection sensor attachment portion 106 that extends laterally from the electrode fitting portion 105 of the battery post terminal 101. In addition, an electric wire (not shown) for supplying power to the vehicle is wired to the stud 107 of the battery state detection sensor 102. Therefore, the battery state detection sensor 102 is subjected to vehicle vibration, particularly tension from an electric wire acting by vibration as a load.

  Therefore, the detection sensor mounting portion 106 of the battery post terminal 101 is formed with a bent portion 106A that is bent up and down in a substantially Z shape so as to increase the bending rigidity in the front-rear direction (left and right direction in FIG. 8) (for example, (See Patent Documents 1 and 2). In addition, as shown in FIG. 8, a bending portion 106B in which both side portions of the detection sensor mounting portion 106 are bent upward is formed to increase the bending rigidity in the width direction (the depth direction in FIG. 8). It has been.

JP 2002-141054 A JP 2011-249307 A

  In recent years, there has been a demand from automobile manufacturers to reduce the height of components disposed in an engine room. This is for the purpose of collision safety and pedestrian protection, and is intended to ensure safety by providing a wide space in the engine room. Therefore, the battery state detection device is also desired to have a low profile from the top surface of the battery.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to be used for a battery state detection device capable of reducing the height while securing attachment strength, and the battery state detection device. It is to provide a battery post terminal.

  In order to solve the above-described problems, the battery state detection device of the present invention is a battery state detection device in which a battery state detection sensor is connected to the tip of a detection sensor mounting portion that extends in a cantilever manner from an electrode fitting portion of a battery post terminal. In the apparatus, the detection sensor mounting portion has a base plate constituting a bottom portion of the battery post terminal, and the base plate is linearly extended from the electrode fitting portion along the upper surface of the battery. A connection part is formed, and the battery state detection sensor is connected to the connection part.

  The base plate may be formed with a first reinforcing rib extending from the electrode fitting portion toward the wiring connection portion of the battery state detection sensor.

  Furthermore, the base plate may be formed with a second reinforcing rib extending from the electrode fitting portion or the first reinforcing rib toward the main body of the battery state detection sensor.

Furthermore, the base plate may be formed with a bent portion obtained by bending a side end portion.

  Further, the first reinforcing rib, the second reinforcing rib, and the bent portion may protrude or bend toward the opposite side of the upper surface of the battery.

  In addition, positioning portions for insert-molding the battery state detection sensor in the connection portion may be formed on the left and right sides of the base plate, respectively.

  On the other hand, the battery post terminal according to the embodiment of the present invention has an electrode fitting portion attached to a battery post of a battery mounted on a vehicle, and extends from the electrode fitting portion in a cantilever manner. A battery post terminal to which a battery state detection sensor is attached to an attachment portion, wherein the detection sensor attachment portion has a base plate constituting a bottom portion of the battery post terminal, and the base plate is connected to the battery from the electrode fitting portion. A connection portion for connecting the battery state detection sensor is formed at a position extending linearly along the upper surface of the battery.

  Further, the base plate includes a first reinforcing rib extending from the electrode fitting portion toward a wiring connection portion of the battery state detection sensor connected to the connection portion, and the electrode fitting portion or the first A second reinforcing rib extending from one reinforcing rib toward the main body portion of the battery state detection sensor connected to the connecting portion, and a bent portion formed by bending a side end portion; and the first reinforcing rib. The rib, the second reinforcing rib, and the bent portion may protrude or bend toward the opposite side of the upper surface of the battery.

  Furthermore, positioning portions for insert-molding the battery state detection sensor in the connection portion may be formed on the left and right sides of the base plate, respectively.

  In the battery state detection device according to the present invention and the battery post terminal used in the battery state detection device, the detection sensor mounting portion has a base plate that forms the bottom of the battery post terminal, and the base plate is separated from the electrode fitting portion. Since the connection part is formed at a position extending linearly along the upper surface of the battery, and the battery state detection sensor is connected to the connection part, the battery state detection sensor attached to the connection part compared to the conventional case Can be mounted at a position close to the upper surface of the battery. Therefore, the height from the upper surface of the battery to the upper surface of the battery state detection sensor can be reduced, and the overall height of the unit of the battery state detection device can be reduced.

It is a perspective view of the battery state detection apparatus concerning the embodiment of the present invention, and shows the state where the battery state detection sensor was attached to the battery post. It is a top view of FIG. FIG. 3 is a left side view of FIG. 2. It is a top view which shows a battery post terminal alone. It is the side view which looked at the battery post terminal of FIG. 4 from the rear side. It is a left view of the battery post terminal of FIG. This is a first modification of the present embodiment and corresponds to FIG. It is a side view which shows the state which attached the conventional battery state detection apparatus to the battery post.

  Hereinafter, the battery state detection device 60 and the battery post terminal 1 according to the embodiment of the present invention will be described in detail with reference to FIGS. Note that the front-rear direction used in the following description refers to the left-right direction in FIG. 2, the width direction and the left-right direction refer to the up-down direction in FIG. 2, and the up-down direction refers to the depth direction in FIG. (Up and down direction in FIG. 3).

  As shown in FIGS. 1 to 3, the battery state detection device 60 includes a battery post terminal 1 and a battery state detection sensor 40 attached to the battery post terminal 1.

  As shown in FIGS. 1 to 3, the battery state detection device 60 is attached to a battery post 51 protruding from the upper surface 50 </ b> A of the battery 50. The battery post 51 is formed in a substantially truncated cone shape, and the electrode fitting portion 10 (details will be described later) of the battery post terminal 1 is narrowed to the outer peripheral surface of the battery post 51, thereby The whole is supported and the battery post terminal 1 is electrically connected.

  As shown in FIG. 2, the battery state detection sensor 40 includes a wiring connection portion 41, an output connector 42, and a main body portion 43. A shunt resistor 44 (configured by a first conductor 44A, a second conductor 44B, and a resistor 44C) is connected to the main body 43 in a flat plate shape, and the main body 43 is formed to be thin in the vertical direction. Yes. The second conductor 44B is electrically connected to the shunt resistance connecting portion 22 (details will be described later) of the battery post terminal 1 by welding. Furthermore, resin case 43A is insert-molded so that main part 43 may cover the exterior of a part of shunt resistance 44 and a part of shunt resistance connection part 22 fixed by welding. By performing insert molding in this way, the adhesion between the battery post terminal 1 and the shunt resistor 44 is improved, and the waterproofness in the case 43A is improved.

  The wiring connection portion 41 is disposed outside the case 43A of the main body portion 43, and a stud 45 is attached on the first conductor 44A extending to the outside. As shown in FIG. 1, an electric wire 46 connected to each device in the vehicle is attached to the stud 45 via a nut 47. The output connector 42 is arranged outside the case 43A of the main body 43 (on the side opposite to the wiring connection portion 41), and the ECU detects the result detected by a circuit board (not shown) provided in the main body 43. This is for output to the (engine control unit).

  As shown in FIGS. 4 to 6, the battery post terminal 1 includes an electrode fitting portion 10, a tightening portion 11 disposed on the front side of the electrode fitting portion 10, and a rear side of the electrode fitting portion 10. It is comprised with the detection sensor attaching part 20 arrange | positioned. The electrode fitting portion 10, the tightening portion 11, and the detection sensor mounting portion 20 are integrally configured by pressing a metal plate.

  The electrode fitting portion 10 is formed in accordance with the frustoconical outer peripheral surface of the battery post 51 described above. The electrode fitting portion 10 is put on the battery post 51 from the upper side, and the fastening portion 11 is fastened with the nut 12, whereby the electrode fitting portion 10 narrows the outer peripheral surface of the battery post 51 from the left and right. Thereby, the battery post terminal 1 is firmly attached to the battery post 51.

  The detection sensor mounting portion 20 has a base plate 21 extending from the bottom of the electrode fitting portion 10 described above to the rear side. The base plate 21 uses the flat portion of the metal plate when the metal plate is pressed as it is, and the electrode fitting portion 10 and the fastening portion 11 are formed by punching the metal plate upward. Has been. Therefore, the base plate 21 is positioned on the lowermost side of the battery post terminal 1 and constitutes the bottom of the battery post terminal 1.

  As shown in FIG. 3, the base plate 21 extends linearly from the electrode fitting portion 10 to the rear side along the upper surface 50 </ b> A of the battery 50 with the battery post terminal 1 fixed to the battery post 51. ing. Further, on the right side of the rear end portion 21A of the base plate 21, a shunt resistance connection portion 22 (connection portion) extending further rearward from the rear end portion 21A is formed. The shunt resistance connection portion 22 is connected to the second conductor 44B of the shunt resistance 44 described above by welding. In this structure, the base plate 21 has a structure in which the battery state detection sensor 40 is supported in a cantilever manner by the electrode fitting portion 10.

  Further, as shown in FIGS. 4 to 6, two reinforcing ribs (first reinforcing rib 23 and second reinforcing rib 24) are formed on the flat portion of the base plate 21. These reinforcing ribs 23 and 24 are provided so as to protrude above the base plate 21 and are formed so as to be pushed out from the bottom side to the top side of the base plate 21 by pressing.

  As shown in FIGS. 2 and 4, two first reinforcing ribs 23 are formed on the left and right sides, and the wiring connection portion 41 (stud 45) of the battery state detection sensor 40 from the outer peripheral surface of the electrode fitting portion 10. And are formed so as to extend toward the output connector 42. More specifically, the first reinforcing rib 23 is in a normal direction (along the center line S1) from the center position of the electrode fitting portion 10 (center of the battery post 51) toward the wiring connection portion 41 and the output connector 42. (Normal direction).

  The second reinforcing ribs 24 are formed so as to extend from the respective ends of the first reinforcing ribs 23 toward the main body 43 of the battery state detection sensor 40 (along the center line S2). Moreover, the 1st reinforcement rib 23 and the 2nd reinforcement rib 24 are provided integrally continuously. Further, the two second reinforcing ribs 24 are formed so as to be parallel to the main body 43.

  Further, bent portions 25 are formed on both the left and right side portions of the base plate 21 with the side ends bent upward. These two bent portions 25 are formed in parallel to each other and are also formed to be parallel to the second reinforcing rib 24.

  The length of the second reinforcing rib 24 and the bent portion 25 in the front-rear direction preferably extends to the front end portion of the battery state detection sensor 40 located at the rear end portion, but the case 43A is insert-molded. It is long enough not to get in the way.

  In addition, notches 26 (positioning portions) for determining the positions of the battery post terminal 1 and the case 43A when the case 43A of the battery state detection sensor 40 is insert-molded at both left and right end portions of the base plate 21. Each is formed. The notch 26 is used for positioning the mold for insert molding and the battery post terminal 1. The notch 26 may be any as long as it can be positioned, and may be a corner or a side processed with high accuracy in addition to the notch.

Next, the operation of the battery state detection device 60 and the battery post terminal 1 according to the embodiment of the present invention will be described.
Since the detection sensor mounting portion 20 of the battery post terminal 1 is not provided with the bent portion 106A bent upward in the Z shape as compared with the detection sensor mounting portion 106 (see FIG. 8) shown in the prior art, the shunt resistance The connecting portion 22 can be disposed at a low position close to the battery upper surface 50A. Therefore, the length L2 in the height direction from the battery upper surface 50A to the upper side of the battery state detection sensor 40 can be reduced.

  Further, the battery post terminal 1 is only fixed at the position of the electrode fitting portion 10, and the base plate 21 of the detection sensor mounting portion 20 supports the connected battery state detection sensor 40 in a cantilever manner. ing. Therefore, the base plate 21 is provided with the first reinforcing rib 23, the second reinforcing rib 24, and the bent portion 25 so as to have sufficient rigidity against the load acting on the battery state detection sensor 40.

For example, the wiring connection portion 41 of the battery state detection sensor 40 receives a load from a wired electric wire (for example, a tensile load acting on the electric wire). Therefore, a bending stress is generated in the base plate 21 along a plane orthogonal to the center line S1 (see FIG. 2) connecting the electrode fitting part 10 and the wiring connection part 41. Since the first reinforcing rib 23 extends from the electrode fitting portion 10 toward the wiring connecting portion 41 along the center line S1, the first reinforcing rib 23 increases the rigidity most effectively against the bending stress (section modulus). Is enlarged). In addition, the second reinforcing rib 24 and the bent portion 25 also have increased rigidity against the force acting on the wiring connection portion 41.
Similarly, the first reinforcing rib 23 extending from the electrode fitting portion 10 toward the output connector 42 receives the force acting on the output connector 42 of the battery state detection sensor 40, so that it is most effective. Increased rigidity.

  Further, the main body 43 of the battery state detection sensor 40 receives a load due to vehicle vibration or the like. Therefore, a bending stress is generated on the base plate 21 along a plane orthogonal to the center line S2 (see FIG. 2) connecting the electrode fitting part 10 and the main body part 43. Since the second reinforcing rib 24 and the bent portion 25 extend along the center line S2, the rigidity is most effectively enhanced against the bending stress. Also, the first reinforcing rib 23 has increased rigidity against this stress.

  Even if the shunt resistance connecting portion 22 is formed at a position where the base plate 21 is linearly extended from the electrode fitting portion 10 along the battery upper surface 50A by these configurations, sufficient strength against each bending stress is obtained. Can be secured.

  According to the battery state detection device 60 and the battery post terminal 1 according to the embodiment of the present invention, the detection sensor mounting portion 20 has the base plate 21 that forms the bottom of the battery post terminal 1, and the base plate 21 is electrode-fitted. Since the shunt resistance connection portion 22 is formed at a position extending linearly from the portion 10 along the upper surface 50A of the battery 50, and the battery state detection sensor 40 is connected to the shunt resistance connection portion 22, the shunt resistance connection portion The height position of 22 can be arranged low. Therefore, the length L2 in the height direction from the battery upper surface 50A to the upper surface of the battery state detection sensor 40 can be made shorter than the length L1 of the conventional structure (see FIG. 8). As a result, a reduction in the overall height of the unit of the battery state detection device 60 is realized.

  In addition, since the first reinforcing rib 23 extending from the electrode fitting portion 10 toward the wiring connection portion 41 of the battery state detection sensor 40 is formed on the base plate 21, a load acting on the wiring connection portion 41 is not affected. On the other hand, the rigidity can be increased most effectively. Also, the rigidity can be increased against a load acting on the main body 43.

  Further, since the second reinforcing rib 24 extending from the end portion of the first reinforcing rib 23 toward the main body 43 of the battery state detection sensor 40 is formed on the base plate 21, it acts on the main body 43. The rigidity can be increased most effectively with respect to the load. Further, the rigidity can be increased against a load acting on the wiring connection portion 41 and the output connector 42.

  Furthermore, since the base plate 21 is formed with the bent portions 25 formed by bending the side end portions, the rigidity can be enhanced most effectively against the load acting on the main body portion 43. Further, the rigidity can be increased against a load acting on the wiring connection portion 41 and the output connector 42.

  Further, since the first reinforcing rib 23, the second reinforcing rib 24, and the bent portion 25 protrude or bend toward the opposite side of the upper surface 50A of the battery 50, they protrude below the base plate 21. The bottom surface of the base plate 21 can be disposed at a position close to the battery upper surface 50A. Therefore, the overall height of the unit of the battery state detection device 60 can be reduced.

  Further, since the notches 26 for insert-molding the case 43A of the battery state detection sensor 40 into the shunt resistance connecting portion 22 are formed on the left and right sides of the base plate 21, respectively, the case with respect to the battery post terminal 1 is formed. 43A can be insert-molded at a predetermined position.

  As described above, the battery state detection device 60 and the battery post terminal 1 according to the embodiment of the present invention have been described. However, the present invention is not limited to the above-described embodiment, and various types can be performed based on the technical idea of the present invention. Variations and changes are possible.

FIG. 7 is a modification of the embodiment of the present invention, and corresponds to FIG.
The battery state detection device 80 and the battery post terminal 70 shown in FIG. 7 are obtained by changing the shapes of the first reinforcing rib 23 and the second reinforcing rib 24 in the present embodiment. Therefore, detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol about another same structure.

  As shown in FIG. 7, the two first reinforcing ribs 73 respectively extend from the electrode fitting portion 10 toward the wiring connection portion 41 and the output connector 42 along the center line S1. These first reinforcing ribs 73 extend to a position close to the bent portion 25. On the other hand, the second reinforcing rib 74 extends from the electrode fitting portion 10 toward the main body portion 43 along the center line S2. As described above, by extending the three reinforcing ribs 23 and 24 from the electrode fitting portion 10, the length of each rib can be secured long.

  In the present embodiment, the first reinforcing rib 23 and the second reinforcing rib 24 are formed by punching the base plate 21 upward with a press, but other structures may be used. For example, a separate rib may be fixed to the upper surface of the base plate 21 by welding or the like.

DESCRIPTION OF SYMBOLS 1 Battery post terminal 10 Electrode fitting part 11 Fastening part 12 Nut 20 Detection sensor attaching part 21 Base plate 21A Rear end part 22 Shunt resistance connection part (connection part)
23 first reinforcing rib 24 second reinforcing rib 25 bent portion 26 notched portion 40 battery state detection sensor 41 wiring connection portion 42 output connector 43 main body portion 43A case 44 shunt resistor 44A first conductor 44B second conductor 44C resistor Body 45 Stud 46 Electric wire 47 Nut 50 Battery 50A Battery upper surface 51 Battery post 60 Battery state detection device 70 Battery post terminal 73 First reinforcement rib 74 Second reinforcement rib 80 Battery state detection device 100 Battery state detection device 101 Battery post Terminal 102 Battery state detection sensor 103 Battery 104 Battery post 105 Electrode fitting portion 106 Detection sensor mounting portion 106A, 106B Bending portion 107 Stud L1, L2 On battery Length S1, S2 centerline from

Claims (9)

A battery state detection device in which a battery state detection sensor is connected to the tip of a detection sensor mounting portion extending in a cantilevered manner from an electrode fitting portion of a battery post terminal,
The detection sensor mounting portion has a base plate constituting the bottom of the battery post terminal, and a connection portion is formed at a position where the base plate is linearly extended from the electrode fitting portion along the upper surface of the battery. ,
The battery state detection device, wherein the battery state detection sensor is connected to the connection portion.   2. The battery state detection device according to claim 1, wherein a first reinforcing rib extending from the electrode fitting portion toward a wiring connection portion of the battery state detection sensor is formed on the base plate. .   3. The base plate is provided with a second reinforcing rib extending from the electrode fitting portion or the first reinforcing rib toward the main body of the battery state detection sensor. The battery state detection device described. The battery state detection device according to claim 3 , wherein the base plate has a bent portion formed by bending a side end portion. The battery state detection device according to claim 4 , wherein the first reinforcing rib, the second reinforcing rib, and the bent portion protrude or bend toward the opposite side of the upper surface of the battery. .   The positioning part for insert-molding the said battery state detection sensor in the said connection part is formed in the left and right of the said baseplate, respectively, The Claim 1 characterized by the above-mentioned. Battery status detection device. A battery post terminal having an electrode fitting portion attached to a battery post of a battery mounted on a vehicle and having a battery state detection sensor attached to a detection sensor attachment portion extending from the electrode fitting portion in a cantilever manner. And
The detection sensor mounting portion has a base plate constituting the bottom of the battery post terminal, and the battery state detection sensor is located at a position where the base plate is linearly extended from the electrode fitting portion along the upper surface of the battery. A battery post terminal characterized in that a connection part for connecting the battery is formed. The base plate includes a first reinforcing rib extending from the electrode fitting portion toward the wiring connection portion of the battery state detection sensor connected to the connection portion, and the electrode fitting portion or the first fitting. A second reinforcing rib extending from the reinforcing rib toward the main body portion of the battery state detection sensor connected to the connecting portion, and a bent portion formed by bending a side end portion;
8. The battery post terminal according to claim 7, wherein the first reinforcing rib, the second reinforcing rib, and the bent portion protrude or bend toward the opposite side of the upper surface of the battery. 9.   9. The battery post terminal according to claim 7, wherein positioning portions for insert-molding the battery state detection sensor in the connection portion are formed on the left and right sides of the base plate, respectively.

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