CN107681102A - Shockproof soft and hard PCB board and battery module structure - Google Patents

Abstract

The invention discloses a battery module structure, which comprises a plurality of battery units, wherein the battery units are electrically connected through a shockproof soft-hard combined PCB (printed circuit board); the shockproof soft-hard combined PCB comprises a PCB body, wherein the PCB body comprises a plurality of metal plates and flexible PCBs which are alternately connected in series, and a connecting part is formed at the connecting part of the metal plates and the flexible PCBs; the battery module structure adopts the shockproof soft and hard combined PCB board to replace the traditional wiring harness structure, the flexible PCB board can collect various signals on the battery unit, the metal plate is used as a carrier capable of overflowing high-voltage signals, and the shockproof soft and hard combined PCB board plays a role in protecting the shockproof soft and hard combined PCB board from being damaged easily.

Description

Shockproof soft and hard PCB board and battery module structure

technical field

The invention relates to the field of new energy power battery modules, in particular to a shockproof soft-rigid PCB board applied to large-scale series-parallel battery modules and a battery module structure using the shockproof soft-rigid PCB board.

Background technique

With the contradiction between people's general demand for cars and environmental protection, new energy vehicles have ushered in a period of rapid development. The current power source of new energy vehicles is mainly rechargeable batteries. Due to people's requirements for the mileage of new energy vehicles, most of the current new energy vehicles are equipped with high-power and energy battery modules. However, with the current technical level, It is still not possible to manufacture a single large-capacity battery, so the battery modules on the current new energy vehicles are all in the form of multiple batteries connected together by circuits. The various battery units in the traditional battery module are connected by wires. Since the control part of the new energy vehicle needs to collect various signals of the power battery for monitoring and control, this requires a large number of electrical connections, which not only increases the The cost and the existence of a large number of wiring harnesses make the battery module not simple enough and inconvenient to maintain. During the driving process of the car, the connection end of the wire is easy to fall off due to the impact of vibration, which increases the maintenance cost and reduces the user experience. To a certain extent, it hinders the development of new energy vehicles.

Contents of the invention

The purpose of the present invention is to provide an anti-shock soft and hard PCB board, which adopts the method of combining the hard energy overcurrent high-voltage hard metal plate and the flexible PCB board to provide a simple, efficient and low-cost battery module for the power vehicle. Low battery assembly scheme.

Another object of the present invention is to provide a battery module structure. The battery module structure adopts a combination of a rigid high-voltage metal plate capable of passing current and a flexible PCB, which is convenient for installation and maintenance and saves costs.

In order to achieve the above object, the present invention discloses a shockproof soft-rigid PCB board, which includes a PCB board body, and the PCB board body includes several metal plates and flexible PCB boards connected in series alternately, and the metal plates and flexible PCB boards The connection part of the connection part forms a connection part, and the connection part is four layers, from top to bottom are the first circuit layer, the second circuit layer formed by the flexible PCB board, the substrate layer formed by the metal plate, and Insulation.

Compared with the prior art, the anti-shock soft-rigid PCB board of the present invention adopts the combination of flexible circuit board and metal plate, the flexible PCB board can collect various signals on circuit devices, and the metal plate is used as a carrier capable of overcurrent high-voltage signals , and plays the role of protecting the shockproof rigid-flexible PCB board of the present invention from being easily damaged. The use of the shockproof rigid-flexible PCB board can save a large number of wiring harnesses, simplify the circuit structure, and has the advantages of being stable and not easily damaged.

Preferably, the first wiring layer is FR-4 wiring standard.

Preferably, the metal plate is a copper substrate.

The invention also discloses a battery module structure, which includes a plurality of battery units electrically connected together through a shockproof rigid-flex PCB board, and the shockproof rigid-flex PCB board is as described above.

Compared with the prior art, the battery module structure of the present invention uses a shockproof soft-rigid PCB board instead of the traditional wiring harness structure, which simplifies the wiring connection structure, saves production costs, and is easy to assemble and maintain.

Preferably, each of the battery units includes a casing and a cell mounted on the casing.

Preferably, the two ends of the top of each housing are provided with installation parts, and the metal plate is provided with installation matching parts matched with the installation parts.

Preferably, the installation part is a stud, and the installation matching part is a screw hole.

Preferably, two ends of the top of the casing are provided with slots for accommodating the metal plate, and the studs are located in the slots.

Preferably, the metal plate is provided with a temperature sensor for collecting the temperature of the battery core.

Description of drawings

FIG. 1 is a schematic perspective view of a battery module structure according to an embodiment of the present invention.

Fig. 2 is a side view of the shockproof rigid-flex PCB board in the battery module structure of the embodiment of the present invention.

Fig. 3 is a top view of the shockproof rigid-flex PCB board in the battery module structure according to the embodiment of the present invention.

Fig. 4 is an internal structure diagram of the connection part of the shockproof rigid-flex PCB board in the battery module structure according to the embodiment of the present invention.

FIG. 5 is a three-dimensional structure diagram of a battery unit in a battery module structure according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of an exploded structure of FIG. 5 .

detailed description

In order to describe the technical content, structural features, realization principle, purpose and effect of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

The present invention discloses a battery module structure, as shown in Fig. 1 to Fig. 6, comprising a plurality of battery units 1, and the battery units 1 are electrically connected through a shockproof flexible and rigid PCB board. The shockproof rigid-flexible PCB board includes a PCB board body 2, and the PCB board body 2 includes several metal plates 20 and flexible PCB boards 21 alternately connected in series, and the connection between the metal plates 20 and the flexible PCB board 21 forms a connection part 22, the connecting part 22 is divided into four layers, from top to bottom are the first circuit layer 220, the second circuit layer 221 formed by the flexible PCB board 21, and the substrate formed by the metal plate 20 layer 222 and insulating layer 223 . Preferably, the first wiring layer 220 of this embodiment is FR-4 wiring standard, and the metal plate 20 is a copper substrate. During specific implementation, the wiring is carried out by sinking copper after laminating the copper bars.

Compared with the existing technology, the structure of the battery module adopts the anti-vibration soft and hard PCB board instead of the traditional wiring harness structure. The flexible PCB board 21 can collect various signals on the battery unit 1, and the metal plate 20 is used as a carrier capable of over-currenting high-voltage signals. , and plays the role of protecting the shockproof rigid-flexible PCB board of the present invention from being easily damaged. The use of the shockproof rigid-flexible PCB board can save a large number of wiring harnesses, simplify the circuit structure, and has the advantages of being stable and not easily damaged.

In order to simplify the installation method of the battery module structure of the present invention, in this embodiment, each battery unit 1 includes a casing 10 and a cell 11 mounted on the casing 10, and each cell 11 is mounted on In each casing 10, a plurality of casings 10 installed with battery cells 11 are connected to each other to form a battery module. For the sake of cleanliness, installation parts are provided at both ends of the top of each housing 10, and installation fitting parts that cooperate with the installation parts are provided on the metal plate 20. In this embodiment, the installation parts It is a stud 12, and the installation matching part is a screw hole 13. When installing, align the screw hole 13 on the metal plate 20 with the stud 12 on the housing 10 and fix it. In addition, in order to improve the stability of the shockproof rigid-flex PCB board, the two ends of the top of the housing 10 are provided with placement grooves 14 for accommodating the metal plate 20, and the studs 12 are located in the placement grooves 14 .

Preferably, in order to monitor the temperature of the battery module structure of the present invention, the metal plate 20 is provided with a temperature sensor for collecting the temperature of the battery cell 11 .

The above disclosures are only preferred examples of the present invention, and of course cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.

Claims (9)

1. A kind of anti-vibration soft-rigid PCB board, it is characterized in that, comprises PCB board body, and described PCB board body comprises some metal plates and flexible PCB board that are connected in series alternately, the joint of described metal plate and flexible PCB board A connecting part is formed, and the connecting part has four layers, from top to bottom respectively the first circuit layer, the second circuit layer formed by the flexible PCB board, the substrate layer formed by the metal plate and the insulating layer. 2. The anti-vibration rigid-flex PCB board according to claim 1, characterized in that, the first wiring layer is FR-4 wiring standard. 3. The shockproof rigid-flex PCB board according to claim 1, wherein the metal plate is a copper substrate. 4. A battery module structure, comprising a plurality of battery cells electrically connected together through a shockproof rigid-flex PCB board, the shockproof rigid-flex PCB board as described in any one of claims 1 to 3. 5 . The battery module structure according to claim 4 , wherein each of the battery units comprises a casing and an electric core mounted on the casing. 6 . 6. The battery module structure according to claim 4, characterized in that, the two ends of the top of each casing are provided with mounting parts, and the metal plate is provided with mounting fittings that match the mounting parts. department. 7. The battery module structure according to claim 6, wherein the installation part is a stud, and the installation matching part is a screw hole. 8 . The battery module structure according to claim 7 , wherein placement grooves for accommodating the metal plate are provided at both ends of the top of the casing, and the studs are located in the placement grooves. 9. The battery module structure according to claim 5, wherein a temperature sensor for collecting the temperature of the battery core is arranged on the metal plate.