Signal and Power Hybrid, Compact Waterproof Circular Connector BH12 Series

Used for many years for E-Bike battery connection.
Also Ideal for Electric Wheelchair and AGV.

In recent years, the market for E-Bikes (Electric Bicycles) has been expanding rapidly, and a variety of products have been developed to meet market needs. As a result, connection methods for connectors have also changed.
In particular, the connection of drive units is shifting from the conventional method of connecting the cable out of the panel with an in-line connector to the method of connecting connectors inside the application.
Hirose Electric has developed a smaller, high current, power-signal hybrid circular waterproof connector based on our long experience with E-Bikes.

E-Bike Battery Connection Example

BH12 Series Product Page

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Specifications

Rated Current	Power Contact: 20A Signal Contact: 1A
Rated Voltage	Power Contact: 30V AC, 42V DC Signal Contact: 30V AC, 42V DC
Operating Temperature	-40 to +105℃
Contact Resistance	Power Contact: 10mΩ Max. Signal Contacct: 15mΩ Max.
Withstanding Voltage	600V AC for 2 min.
Insulation Resistance	1000MΩ Max. (500V DC)
Mating Durability	30 times
Waterproof	IPX6, IPX7

Variations

Plug:3pos. (Signal: 1pos., Power: 2pos.)

4pos. (Signal: 2pos., Power: 2pos.)

Receptacle: 4pos. (Signal: 2pos., 2pos.)

　 *If you require 3pos., please use 4pos. with
only a single signal contact.

Applicable Cable

Power: 14-16 AWG (Outer diameter ⌀2.6-3.0mm)
Signal: 22-24 AWG (Outer diameter ⌀1.4-1.6mm)

Features

Compact and Light Weight

Ultra compact and lightweight while supporting 20A high current at the power contact. BH12 contributes to space reduction of the end product.

(Unit: mm)

Plug

BH12WP-3SC (3pos.)*

BH12WP-4SC (4pos.)

Receptacle

BH12WR-4P (Front Mount Type)

BH12WRA-4P (Rear Mount Type)

*The 3pos. plug mates with the 4pos. receptacle.

Space-Saving

The power contact of the receptacle is designed to be connected to the cable at a right angle. This makes it possible to reduce the thickness of the drive unit by shortening the protruding portion of the cable, which tends to be thicker and have a larger bending radius for the power contacts.

Two Types of Panel Mounting

Recommended Panel Thickness: 6-7.5mm

Front Mount Type

(Unit:mm)

Attach receptacle from the front of the panel. Then insert the wired contacts into the receptacle.

Since there is little protrusion from the panel to the inside, it is effective when space inside the panel is limited.

Rear Mount Type

Attach receptacle from the back of the panel.

Can attach pre-assembled cable assemblies to the panel. Additionally, there is no risk of workers removing the screws since they are not visible from the exterior.

Robust Lock Design for Damage Prevention and High Vibratoin Resistance

Lock Supports Both Ends

The locking spring of the double-ended support design prevents cable entanglement, lock deformation and damage during assembly and transportation. BH12 also clears the most demanding tests required for E-Bikes.

Mating Operation

Mating is completed by simply pushing straight in.

Unmating Operation

Pull straight out while pressing on the lock spring.

Termination Tools

Tool Name	Contact Type No.	Applicable Cable (AWG) Outer Diameter (mm)	Part No.
Applicator for Plug	Power Contact BH12-SC-213	14-16 AWG ⌀2.6-3.0mm	AP105-BH12-SC-1
Applicator for Plug	Signal Contact BH12-SC1-213	22-24 AWG ⌀1.4-1.6mm	AP105-BH12-SC1-1
Hand Tool for Plug	Under Development
Soldering Base for Receptacle	Power Contact BH12-P-213	14-16 AWG ⌀2.6-3.0mm	BH12-P-213/SO-MD
Soldering Base for Receptacle	Signal Contact BH12-P1-213	22-24 AWG ⌀1.4-1.6mm	BH12-P1-213/SO-MD

Applications (Use Case)

E-Bike

Electric Wheelchair

Electric Stroller

AGV/AMR

Drone, LED Lighting, etc.

BH12 Series Product Page

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Smartphone & Wearable

Smart Appliances

PC & Tablet

Other Consumer Equipment

Autonomous Car

Powertrain (For Automotive)

Infotainment (For Automotive)

Connected Cars

Automotive Lighting

Smart Grid

Industrial Automation

Robots

Medical

Telecommunications/Networking

Data Centers

Rail/Commercial Vehicles

Other Industrial Equipment

Office Automation

Signal and Power Hybrid, Compact Waterproof Circular Connector BH12 Series

E-Bike Battery Connection Example