Abstract:
Provided herein are approaches for battery cell protection. In one approach, a positive temperature coefficient (PTC) device may include a protection component including a first side and a second side, and a component housing encasing the protection component. The PTC device may further include a first terminal electrically connected through a first opening of the component housing to the first side of the protection component, and a second terminal electrically connected through a second opening of the component housing to the second side of the protection component. In some approaches, the PTC device includes at least one protection strap extending between the first and second terminals to provide enhanced mechanical coupling therebetween, particularly in the event of a fault.
Abstract:
An electrically powered heater unit (1) comprising a positive temperature coefficient disc heater element (10) sandwiched between an electrically conductive contact element (14) and an electrically and heat conductive heat transfer element (15). A housing (5) defining a hollow interior region (9) is located on a plate member (4), and a communicating opening (3) formed in the plate member (4) communicates with the hollow interior region (9). The heat transfer element (15) is secured to the plate member (4) by retaining member (25) extending from the heat transfer element (15) engaging a rim (28) of the communicating opening (3), with the heating element (10) and the contact element (14) located within the hollow interior region (9) of the housing (5). A first connecting element (38) extends from the contact element (14) through the housing 5 for connecting to a first wire (39) of an electrical power supply for providing electrical power supply to a first abutment surface (11) of the heater element (10). A second connecting element (55) extends from the heat transfer element (15) through the housing (5) for connecting to a second wire of an electrical power supply, for providing the electrical power supply to a second abutment surface (12) of the heater element (10).
Abstract:
Apparatus (2) for sensing at least one parameter in water, which apparatus (2) comprises (i) a temperature sensor (24) for sensing temperature in the water; (ii) a substrate (14) which is provided with the temperature sensor (24); (iii) strain compensation means for minimising drift in the temperature sensor caused by stress on the substrate (14), the strain compensation means being such that it uses conduction paths on opposite sides of the substrate (14); and (iv) the conduction paths for the temperature sensor (24) are sinuous conduction paths.
Abstract:
The invention relates to a ceramic multilayered component which comprises a layer stack (101) having a plurality of ceramic layers (102, 103, 104). The multilayered component comprises a first (105) and a second (106) connecting contact as well as a first (107) and a second (108) inner electrode which are each arranged between two layers (102, 103; 103, 104) of the layer stack (101). The multilayered component comprises a first (109) and a second (110) via electrode for electrically coupling the first connecting contact (105) to the first inner electrode (107) and for electrically coupling the second connecting contact (106) to the second inner electrode (108).
Abstract:
An overcurrent protection circuit for low-voltage, high-current electrical systems comprises a Positive Temperature Coefficient (PTC) resistor in series with an auto-reset thermal breaker. The breaker allows for intermittent current within an assumed product usage duty cycle, and repeatedly trips and resets on sustained high current usage or during a short-circuit fault. The PTC resistor limits current in the system to a low value when the temperature rises to the PTC resistor’s trip point. The PTC resistor protects the system from thermal damage during the non-breaker-tripped portions of sustained high current use, or during continuous low-current use. The use of both the PTC resistor and auto-reset breaker provides thermal overcurrent protection while allowing for performance claims based on an assumed duty cycle of product use.