TWI479169B - A Positive Locking Confirmation Apparatus of a Terminal Bolt utilizing a Voltage Sensor of a Battery Management Unit - Google Patents

Description

Electrode bolt using a voltage sensor of a battery management unit to confirm a locked state

The present invention relates to a device for confirming the locking state of an electrode bolt of a battery module used in a battery case of an electric vehicle, and a method for confirming a locking state, and more precisely, a sensing locking state. Device; this method of locking state confirmation 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 associated electrode bolts are subject to vehicle vibration and individual batteries Modules are connected to the battery management unit to provide battery information to the vehicle control unit, which can be monitored in this way.

Large electric vehicle battery packs often require hundreds of cells; they are connected in parallel or in series. Most assembly methods do not accurately lock each contact, resulting in the risk of loosening of such battery packs. When the electric vehicle travels on a poorly-traveled route, the extra vibration accelerates the release of the battery contacts. If the contacts fall off during operation or are in poor contact, it is very likely that the system will shut down or even burn out.

Today's electrode connection method does not show whether the electrode is indeed locked. Therefore, when the battery pack is in poor contact, the person cannot quickly know the faulty part, thereby greatly increasing the inspection time. Since the electric vehicle can only be powered by the battery pack, the reliability of the battery pack becomes a major factor affecting whether the electric vehicle can operate reliably.

Unlike vehicles powered by gasoline or diesel, electric vehicles rely heavily on the battery as their sole source of propulsion. The electrodes of electric vehicles require a viable and reliable method of detecting the locking state of the electrode bolts to maintain a reliable power. Source; however, such an approach should also avoid adding additional sensors or wires to the battery pack, because the battery pack contains many battery modules, and the amount of sensors and wires can cause labor costs to increase and assembly difficulties for the manufacturer. It is unacceptable.

In addition, in the conventional electric vehicle, the electrode connection mode of the battery pack requires a battery voltage or current sensor and a conductive metal to be bolted to the electrode, which may cause the worker to replace the battery module or replace the voltage sensor. The workload has increased dramatically, so this is another problem to be solved.

In order to overcome the above problems with the battery module electrodes of the conventional electric vehicle, the present invention discloses a device for confirming the locking state, which comprises a connection group and a method for detecting the locking state.

The connection group comprises an electrode bolt, an anchor bolt, a conductor, a voltage sensor electrode and an electrode comprising an electrode screw and a fixing screw; the electrode bolt fixes a conductor on the electrode, and the electrode bolt head segment comprises several a slot, wherein one of the slots is re-installed with the store and the bolt is aligned with the anchor bolt at the electrode, and the anchor bolt secures the voltage sensor to the electrode through the slot in which the electrode bolt head segment is aligned.

The joint group anchors the position of the electrode bolt with the anchor bolt to achieve the locking state of the electrode bolt, so that the electrode bolt can be pulled out or changed position only after the anchor bolt is removed.

The means for detecting the locking state of each electrode in the battery pack requires a vehicle control unit to integrate a calculation means to confirm the consistency of the voltage signal. Once the signal of a particular voltage sensor is unstable, the vehicle control unit can detect When the relevant electrode bolt loses the locked state, the electrode related to the voltage sensor needs to perform a link check. In short, the vehicle control unit transmits an early warning warning to inform the user to perform a link check, thereby avoiding the electrode bolt and the conductor. It is detached from the electrode screw to avoid arcing or surge current in the battery pack that may damage other electronic components in the electric vehicle.

The main purpose of the present invention is to provide a large-sized battery pack based on the lack of assembly efficiency of the battery module in the battery case of the conventional electric vehicle and the inability to confirm the locking state of the contacts of the respective battery cells. The electrode design in which the individual electrodes are locked and thus warns when driving is likely to be loose.

A secondary object of the present invention is to provide a warning device that provides an alert when the electrode is at risk of loosening for maintenance personnel to overhaul.

Another object of the present invention is to provide a device for confirming the locking state, which uses the battery sensor to report the voltage signal of the battery module and confirm the locking state, so that the production cost is relatively low.

Another object of the present invention is to provide an apparatus for confirming a locked state which can simplify the work procedure when assembling or disassembling a battery management unit in a large number of battery packs.

In order to achieve the above object, a broader aspect of the present invention provides a locking state confirmation mechanism for an electrode contact of an electric vehicle, comprising: an electrode having an electrode screw and a fixing screw; and an electrode bolt, Locking on the electrode for contacting a current conductor with the electrode, the head of the electrode bolt has at least one fixing groove; a fixing bolt for locking a sensing contact of the battery management unit The fixing screw of the electrode bolt head section is engaged, wherein when the fixing bolt is fixed to the fixing screw, the fixing bolt is installed in the fixing groove; and a sensing unit includes an operation program, It is used to compare the consistency of the voltage signal returned from the sensing contact and determine the locking state of the electrode bolt.

According to the concept of the present invention, the control unit determines the locking state of the electrode bolt through the consistency of the voltage signal.

According to the concept of the present invention, when the control unit senses that the electrode bolt loses the locking state, the control unit transmits an identification code to the user to remind the connection check of the electrode bolt.

According to the concept of the present case, the fixing bolt is an insulating material.

According to the concept of the present invention, the contact surface of the sensing contact and the fixing bolt is an insulating material.

According to the concept of the present case, the control unit includes a gyro sensor for detecting the vibration frequency of the vehicle to be compared with the wave action of the voltage signal.

In order to achieve the above object, another broad aspect of the present invention provides a locking state confirmation device for a battery module electrode, which includes an operation program for continuously detecting the consistency of a voltage signal from a sensing contact. The sensing contact is fixed to the battery electrode in such a manner that the fixing bolt is disposed in the fixing groove of the electrode bolt to suppress the rotation of the electrode bolt.

101‧‧‧ electrodes

102‧‧‧electrode bolt

103‧‧‧fixed slot

104‧‧‧Sensing contacts

105‧‧‧ fixing bolts

108‧‧‧electrode thread

114‧‧‧Conductor

115‧‧‧Fixed thread

410‧‧‧First battery pack

420‧‧‧Second battery pack

430‧‧‧third battery pack

440‧‧‧fourth battery pack

450‧‧‧Second Battery Management Unit

460‧‧‧First Battery Management Unit

403‧‧‧Negative terminal connection point

404‧‧‧ positive terminal connection point

491‧‧‧Connector of the negative terminal connection point 403

495‧‧‧Connecting line of positive terminal connection point 404

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 partial view of the first embodiment of the present invention.

The fourth figure is a wiring diagram of the first embodiment of the present invention.

The fifth figure is another embodiment of the first embodiment of the invention comprising an additional safety clip.

Please refer to the first to third figures, which are the first embodiment of the present invention. The embodiment is a connector set including: an electrode bolt 102, a fixing bolt 105, an electrode 101, a conductor 114, and a voltage sensing contact; wherein the electrode includes an electrode screw 108 to connect the conductor 114 The electrode bolt 102 is fixed to the electrode bolt 102; the top end of the electrode bolt 102 has a plurality of fixing slots 103 for fixing the fixing bolt 105 to the fixing screw 115 of the electrode 101; the fixing electrode is further provided with a fixing screw to fix the battery with the fixing bolt 105. The sensing contact 104 of the management unit is fixed to the electrode 101, wherein the fixing bolt 105 is disposed through one of the fixing slots described in the mounting for fixing the rotation of the electrode bolt 102.

During the mounting of the connector set, the conductor 114 is first mounted on the electrode 101, aligned with the electrode screw 108, and then the electrode bolt 102 is secured to the electrode thread 108 to secure the conductor 114 and secure the electrode bolt 102. The card slot 103 is aligned to the fixed thread 115, and finally the sensing contact 104 is fixed to the fixed thread 115 by the fixing bolt 105. In this way, the presence of the fixing bolt 105 represents that the electrode bolt 102 is still in the correct locking state.

This joint set uses the fixing bolts 105 to perform the locking state of the counter electrode bolt 102. This state is to directly inhibit the rotation of the fixing bolt 105 to ensure its locking state.

The locking state confirming means of the first embodiment further includes a method of detecting the locked state by setting an arithmetic program in the vehicle control unit for detecting the consistency of the voltage signal from the sensing contact in the power management unit.

In view of confirming the structure of the locking state device, the fixing bolt 105 needs to be removed before the electrode bolt 102 is rotated, and if the fixing bolt 105 is loose due to vehicle vibration, an unstable or fluctuating voltage is obtained. The information signal, as such, the vehicle control unit will be able to discern whether the unstable signal is from the loose fixing bolt 105.

Therefore, when the sensing connector of the battery management unit of a particular battery module is loose from the electrode bolt end and loses the locking state, the voltage signal of the battery module is unstable, and the vehicle control unit will Confirm the need for connection check and display the number of the battery module to the user or maintenance personnel. Therefore, due to the warning from the vehicle control unit about the connection status, it will prevent any arc damage or power system accident during the running of the vehicle. Stop.

The method of confirming the locking state requires the vehicle control unit to continuously perform an arithmetic program to confirm the consistency of the current or voltage signal. Preferably, the calculation program should include a vibrating gyroscope to detect the vehicle vibration, and thus, if the vehicle The control unit detects that the fluctuation of the voltage information is similar to the frequency of the vehicle vibration, and the vehicle control unit determines that the electrode bolt has lost the locking state.

Preferably, in order to optimize the locking state, the fixing bolt can be made of an insulating material, so that the sensing contact does not receive the signal from the contact surface of the sensing contact and the electrode bolt, so the inconsistent part of the voltage information signal Will be amplified to more sensitively detect the locked state.

Preferably, in order to provide a safety backup system as an alternative to the first embodiment in the fifth figure, the head of the electrode bolt may further comprise a circular groove for mounting an insulating safety clip 501 to ensure that the fixing bolt is loose. It can still be kept in the fixed slot.

In other words, in the first embodiment, an insulating spacer can be placed between the fixing bolt and the sensing contact to prevent the transmission of the voltage signal.

Referring now to the fourth figure, this is a mode in which the first embodiment is employed, in which two battery management units are used to detect the voltage signals of the individual battery electrodes and the locking state of the individual electrodes.

For example, the negative terminal 412 of the first battery module 410 is sensed by the first sensing contact 461 of the first battery management unit 460, and the positive terminal 411 of the first battery module 410 is The second sensing contact 462 of the battery management unit 460 senses the locking state thereof, and the third sensing contact 463 is used to sense the positive terminal 421 of the second battery module 420, and the fourth sensing contact 464 is used to sense the positive terminal 431 of the third battery module 430, and the fifth sensing contact 465 is used to sense the signal of the positive terminal 441 of the fourth battery module 440. Moreover, the second battery management unit 450 senses the negative terminal 412 of the first battery module 410 through the first sensing contact 451 thereof, and senses the second battery module 420 through the second sensing contact 452 thereof. The negative terminal 422 of the third battery module 430 is sensed by the third sensing contact 453 thereof, and the negative terminal 442 of the fourth battery module 440 is sensed by the fourth sensing contact 454 thereof. The negative terminal 441 of the fourth battery module 440 is sensed by its fifth sensing contact 451.

In the fourth diagram, as in the following four battery series circuits, two battery management modules can be used to monitor all electrode locking states.

102‧‧‧electrode bolt

103‧‧‧fixed slot

104‧‧‧Sensing contacts

105‧‧‧ fixing bolts

108‧‧‧electrode thread

114‧‧‧Conductor

115‧‧‧Fixed thread

Claims (1)

A locking state confirmation mechanism for an electrode contact of an electric vehicle, comprising:

An electrode having an electrode screw and a fixing screw;

An electrode bolt is fixed on the electrode for contacting a current conductor with the electrode, the head section of the electrode bolt having at least one fixing groove;

a fixing bolt for locking a battery management unit to engage with the fixing screw of the electrode bolt head section, wherein when the fixing bolt is fixed to the fixing screw, the fixing bolt is The device is in the fixing slot;

A sensing unit includes an arithmetic program for comparing the consistency of the voltage signal returned from the sensing contact and determining the locking state of the electrode bolt.

2. The locking state confirming mechanism of the electrode contact of the electric vehicle according to claim 1, wherein a control unit determines the locking state of the electrode bolt by the consistency of the voltage signal.

3. The locking state confirmation mechanism of the electrode contact of the electric vehicle according to the second aspect of the invention, wherein the control unit transmits an identification code to the user when sensing that the electrode bolt loses the locking state. Remind the connection check of the electrode bolt.

4. The locking state confirming mechanism of the electrode contact of the electric vehicle according to the first aspect of the invention, wherein the fixing bolt is an insulating material.

5. The locking state confirmation mechanism of the electrode contact of the electric vehicle according to the first aspect of the invention, wherein the contact surface of the sensing contact and the fixing bolt is an insulating material.

6. The locking state confirmation mechanism for an electrode contact of an electric vehicle according to claim 1, wherein the control unit includes a gyro sensor for detecting a vibration frequency of the vehicle to be associated with the voltage signal Wave action comparison.

7. A locking state confirmation device for a battery module electrode, comprising an arithmetic program for continuously detecting the consistency of a voltage signal from a sensing contact, wherein the sensing contact is configured to mount the fixing bolt The fixing groove of the electrode bolt is fixed to the battery electrode in such a manner as to suppress the rotation of the electrode bolt.