TWI479170B - A locking status detection apparatus utilizing a voltage sensor assembly for multiple battery terminals - Google Patents

Description

Locking state detecting device using battery sensor to detect several electrodes

The present invention provides a device for detecting a locked state of a plurality of electrode contacts in a battery pack by using a voltage sensor, and more particularly, a device for confirming a locked state by using signal consistency of a voltage sensor; The solid state confirmation device is particularly useful in the field of electric vehicles because a large number of battery modules are often used in connection with each other to provide power, and the associated electrode bolts are subject to vehicle vibration.

Large electric vehicle battery packs often require hundreds of cells; they are connected in parallel or in series. Most of the assembly methods cannot accurately lock each contact, which leads to the risk of looseness of such battery packs; however, during the process of traveling, the battery is constantly affected by the continuous vibration of the vehicle, so when the electric vehicle runs When operating for a long time, it may cause the battery contacts to loosen and generate a high voltage arc or spark. Therefore, when the battery is mounted to the vehicle, it is necessary to provide a detecting device for the battery locking state to ensure the safety of the battery pack.

The invention provides a locking state detecting device, which comprises a detecting sensor The device component is used to return the battery voltage message and the locking state of the plurality of electrode contacts on the battery pack, especially for an electric vehicle that is subject to continuous vibration.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a locking state detecting device capable of prompting a user to detect a potential contact of an electrode contact when the electrode contact is loose, thereby preventing the power system of the electric vehicle from malfunctioning.

A secondary object of the present invention is to provide a locking device capable of transmitting a locked state of a battery contact and a battery voltage message to a battery management unit.

Another object of the present invention is to provide a locking state detecting device capable of detecting a locking state of a plurality of different electrodes having the same potential by a voltage sensor of a battery management unit.

In order to achieve the above object, a broader aspect of the present invention provides a locking state confirming device for a plurality of electrode contacts, comprising: an electrode having an electrode screw and a fixing screw; and an electrode bolt for The locking electrode has a current conductor and the electrode screw, wherein the electrode bolt has at least one fixing groove; a sensing unit includes an insulating sheath, a first contact point, a second contact point, and a The elastic member and a voltage signal input connector are configured to form a current path when the elastic member is pressed to report the voltage signal of the circuit node of the electrode; and a fixing bolt for fixing a detecting sensor group to the fixing Above the thread, when the head section of the fixing bolt is located in the fixing groove of the electrode bolt, the bolt head section of the fixing bolt forms a locking state on the electrode bolt.

According to the concept of the present invention, the locking state detecting device further comprises an additional detecting sensor assembly of individual additional electrodes of the same potential as the electrode.

According to the concept of the present invention, the locking state confirming device further includes at least one bias resistor to A voltage dividing circuit is formed, and when the elastic member of the detecting sensor assembly is not squeezed, a unique voltage drop voltage signal is generated and transmitted to the battery management component.

According to the concept of the present invention, the locking state confirming device further includes a control element to identify the faulty electrode joint by measuring the unique voltage drop.

In order to achieve the above object, another broad aspect of the present invention provides a locking of a faulty electrode contact including at least two detecting sensor groups and a voltage signal input connector to detect circuit nodes of the plurality of electrodes. The state confirmation device is characterized in that the individual detection sensor group comprises an insulation kit, a first contact point, a second contact point and an elastic member, and the elastic member is locked by the fixing bolt and the associated electrode bolt. A current path is formed through the first contact point and the second contact point during pressing.

101‧‧‧ electrodes

102‧‧‧electrode bolt

103‧‧‧fixed slot

104‧‧‧Electrode thread

105‧‧‧ fixing bolts

106‧‧‧Fixed thread

110‧‧‧current conductor

111‧‧‧First touch point

112‧‧‧second touch point

113‧‧‧First insulating sleeve

114‧‧‧Second insulating sleeve

115‧‧‧Insulation sheath

116‧‧‧elastic gasket

410‧‧‧First battery

411‧‧‧ positive electrode of the first battery

412‧‧‧Negative battery

413‧‧‧electrode bolt of the negative electrode of the first battery

414‧‧‧Fixed bolts for the negative pole of the first battery

420‧‧‧second battery

421‧‧‧Negative battery

422‧‧‧The positive electrode of the second battery

423‧‧‧electrode bolt of the negative electrode of the second battery

424‧‧‧Fixed bolts for the positive pole of the second battery

450‧‧‧current conductor

451‧‧‧Interconnection wiring

452‧‧‧ input line

453‧‧‧Output line

501‧‧‧First electrode

502‧‧‧second electrode

503‧‧‧ third electrode

504‧‧‧fourth electrode

511‧‧‧First detection sensor assembly

512‧‧‧Second detection sensor assembly

513‧‧‧3rd detection sensor assembly

514‧‧‧Four detection sensor assembly

520‧‧‧Signal transmission line

521‧‧‧First bias resistor

522‧‧‧second bias resistor

523‧‧‧ Third bias resistor

531‧‧‧First sensor wire

532‧‧‧Second sensor wire

533‧‧‧ third sensor wire

534‧‧‧fourth sensor wire

The first figure is an isometric view of a first embodiment of the invention.

The second drawing is an exploded view of the first embodiment of the present invention.

The third drawing is a cross-sectional view of the first embodiment of the present invention.

The fourth figure is an isometric view of a second embodiment of the present invention.

The fifth figure is a schematic diagram of wiring of a plurality of battery modules in parallel in a single battery pack according to a second embodiment of the present invention.

Please refer to the first to third figures, which are the first embodiment of the present invention. The embodiment is a joint set comprising: an electrode 101, an electrode bolt 102, a fixing groove 103, an electrode screw 104, a fixing bolt 105, a fixing screw 106, a current conductor 110, and a first Contact point 111, a second contact point 112, a first An insulating sleeve 113, a second insulating sleeve 114, an insulating sheath 115, and an elastic spacer 116.

As shown in the second figure, the electrode 101 has an electrode screw 104 and a fixing screw 106.

The current conductor 110 is locked to the electrode 101 through the electrode bolt 102, wherein the electrode bolt 102 is adjusted to a position to align the fixing groove 103 with the fixing screw 106 to mount the fixing bolt 105.

The fixing bolt 105 is for fixing a group of detecting sensor groups to the fixing screw 106.

The detecting sensor group includes an insulating sheath 115, a first contact point 111, a second contact point 112, and an elastic spacer 116; as shown in the first embodiment in the third figure, the insulating sheath 115 includes the first The contact point 111 and the second contact point 112; when the insulating sheath 115 is pressed by the fixing bolt 105, the elastic spacer 116 compresses to make the first contact point 111 and the second contact point 112 touch each other and generate a circuit connection; When the insulating sheath 115 is released or decompressed, the elastic spacer 116 will open the first contact point 111 and the second contact point 112 and isolate the circuit connection.

In the first embodiment, the first contact point 111 is connected to a battery management unit, and the second contact point 112 is connected to a voltage sensing probe or a voltage sensing connector for receiving a voltage signal from the electrode. The battery management unit continues to receive a stable voltage signal when the first contact point 111 is coupled to the second contact point 112, and loses the voltage signal when the first contact point 111 and the second contact point 112 are isolated.

Referring now to the fourth embodiment, which is a second embodiment of the present invention, wherein the array detecting sensor group is mounted to the first battery 401 and the second battery 402, wherein the first battery The pool 401 is connected in parallel with the second battery 402.

The second embodiment discloses a method for detecting a locking state of a plurality of electrodes by using a plurality of sets of detecting sensors to transmit a set of voltage signals when the two batteries are connected in parallel, wherein the negative electrode 412 of the first battery 410 is The negative electrode 421 of the second battery 420 has the same potential.

The fixing bolt 414 is used to confirm the locking state of the electrode bolt 413 on the negative electrode 412 of the first battery 410. The fixing bolt 414 is also fixed with a detecting sensor assembly, as described in the first embodiment. On the fixing screw of the negative electrode 412 of the first battery 410.

The fixing bolt 424 is used to confirm the locking state of the electrode bolt 423 on the negative electrode 421 of the second battery 420. The fixing bolt 424 also locks a detecting sensor assembly, as described in the first embodiment. It is mounted on the fixing screw of the negative electrode 421 of the first battery 420.

A voltage information signal, from the negative pole of the first battery and the negative pole of the second battery, is transmitted to the current conductor 450 to the input line 452; when the two detecting sensors associated with the fixing bolt 414 and the fixing bolt 424 When the component is squeezed to pass a current through the first contact point and the second contact point, the current information signal is transmitted through the input line 452, the interconnecting wire 451, and the output line 453 of the battery management unit (not shown). Thereby reporting this voltage information to the battery management unit.

When one of the detecting sensor assemblies loses the squeeze state due to the looseness of the associated fixing bolt, the electrical conduction of the first contact point and the second contact point of the sensor may be destroyed. In this case, the battery management unit Will lose its voltage information signal, so the vehicle management unit can use the loss of voltage information signal as the loose connection of the electrode The indication of the potential possibility is that the vehicle management unit associated with the battery management unit can notify the user or the service personnel to perform the necessary detection of the electrode connection.

Referring now to the fifth diagram, an advanced application example of the second embodiment is shown, wherein blocks 504, 503, 502 and 501 respectively represent a detection sensor assembly for reporting the lock of its corresponding battery electrode. The solid state and the voltage information signal of the designated node of the parallel battery pack; the wirings 534, 533, 532 and 531 are used to connect the detecting electrodes of the respective respective electrodes.

In the fifth diagram, bias resistors 523, 522, and 521 are used to generate a voltage divider circuit that is capable of detecting the locked state of a plurality of battery electrodes and identifying faulty electrode connections when the electrode bolts of any of the batteries are loose. The battery management unit reads the voltage information signal directly through the connection lines 520 and 534 under the state that all the detecting sensor components are locked, and obtains the full voltage value of the electrode circuit node; When one of the detecting sensor components is loose, the circuits connecting the wires 520 and 534 are not conductive, and the battery management unit reads the voltage information signal of the electrode circuit node through the corresponding bias resistor, and obtains a reduced voltage. The voltage value, and thus the vehicle management unit associated with the battery management unit can determine and identify the particular electrode that is connected to the fault by the reduced voltage signal and the voltage value of the voltage divider circuit.

Through the implementation of the embodiment as shown in FIG. 5, the vehicle management unit can notify the user of the faulty electrode connection before the fall of the electrode or current conductor occurs, because even if the vehicle management unit self-reduced voltage information value recognizes the loose The fixing bolts are removed, and the electrode bolts should still be located in the electrode threads. Therefore, it provides the driving or service personnel with an early warning of the detection of a pair of fault contacts.

101‧‧‧ electrodes

102‧‧‧electrode bolt

103‧‧‧fixed slot

105‧‧‧ fixing bolts

111‧‧‧First touch point

112‧‧‧second touch point

113‧‧‧First insulating sleeve

114‧‧‧Second insulating sleeve

115‧‧‧Insulation sheath

116‧‧‧elastic gasket

Claims (5)

A locking state confirming device for a plurality of electrode contacts, comprising: an electrode having an electrode screw and a fixing screw; and an electrode bolt for locking a current conductor and the electrode screw, wherein The electrode bolt has at least one fixing groove; a sensing unit comprising an insulating sheath, a first contact point, a second contact point, an elastic member and a voltage signal input joint for the elastic member a current path formed when the squeeze is formed to return a voltage signal of the circuit node of the electrode; and a fixing bolt for fixing a detecting sensor group on the fixing screw, when the head of the fixing bolt is located at the electrode In the fixing groove of the bolt, the electrode bolt is formed in a locked state by the bolt head section of the fixing bolt. The locking state confirming device for a plurality of electrode contacts according to claim 1, wherein the locking state detecting device further comprises an additional detecting sensor component of an individual additional electrode having the same potential as the electrode . The locking state confirming device of the plurality of electrode contacts according to the second aspect of the patent application, wherein the locking state confirming device further comprises at least one bias resistor to form a voltage dividing circuit, the detecting When the elastic component of the sensor assembly is not squeezed, a unique voltage drop voltage signal is generated and transmitted to the battery management component. A locking state confirming device for a plurality of electrode contacts according to claim 3, wherein the locking state confirming device further comprises a control element for identifying the faulty electrode by measuring the unique voltage drop. contact. A locking state confirming device comprising at least two detecting sensor groups and a voltage signal transmitting connector to detect fault electrode contacts of circuit nodes of the plurality of electrodes, wherein the individual detecting sensor group comprises an insulation a kit, a first contact point, a second contact point and an elastic member forming a current path through the first contact point and the second contact when the elastic member is locked by the fixing bolt and the associated electrode bolt point.