A temperature sensor element includes: an element main body including a heat sensitive body including a thermistor sintered body of which the electrical characteristics change with temperature, and a pair of lead wires that is connected to the heat sensitive body through electrodes; and a protective layer that protects the heat sensitive body. The protective layer has an inner protective layer covering the heat sensitive body and an outer protective layer covering the outer side of the inner protective layer. The inner protective layer is formed of an aggregate of particles that are chemically stable with respect to the thermistor sintered body and made of non-metal.

A unit for high-temperature for uses above 700 C. is provided. The unit includes a housing and an electrical functional element. The functional element has a non-conducting substrate, an electrically conductive element, and at least one connection wire or pad. The functional element has a first section, a second section, and a third section. The first section is within the housing and shielded from a local environment. The second section includes the at least one connection wire or pad and is accessible externally to the housing. The third section is between the first and second sections and is embedded in an electrically insulating material. The insulating material seals off the housing from the functional element. A physical and/or chemical bond at an interface between the insulating material and the functional element.

A rechargeable battery system is provided. The rechargeable battery system comprises: a battery cell having a laminated housing enclosing electrolyte and electrode stacks; a thermal sensing pad embedded within the battery cell, the thermal sensing pad comprising a plurality of temperature sensors disposed at different internal positions within the battery cell, each temperature sensor encapsulated in an electrolyte-resistant material; an integrated circuit board electrically coupled with the thermal sensing pad, the integrated circuit board configured to: (a) receive sensor signals from the temperature sensors; (b) convert the sensor signals into digital temperature data; and (c) transmit the digital temperature data to a battery management system. The battery management system is configured to analyze the digital temperature data to assess internal temperature conditions of the battery cell.

A rechargeable battery system is provided. The rechargeable battery system comprises: a battery cell having a laminated housing enclosing electrolyte and electrode stacks; a thermal sensing pad embedded within the battery cell, the thermal sensing pad comprising a plurality of temperature sensors disposed at different internal positions within the battery cell, each temperature sensor encapsulated in an electrolyte-resistant material; an integrated circuit board electrically coupled with the thermal sensing pad, the integrated circuit board configured to: (a) receive sensor signals from the temperature sensors; (b) convert the sensor signals into digital temperature data; and (c) transmit the digital temperature data to a battery management system. The battery management system is configured to analyze the digital temperature data to assess internal temperature conditions of the battery cell.

An electric wire unit includes an electric wire, a terminal, a temperature sensor, and a waterproof member. The electric wire includes a conductor and an insulating sheath. The terminal includes an electric wire connection portion connected to the conductor of the electric wire. The temperature sensor detects the temperature of the electric wire connection portion. The waterproof member liquid-tightly covers the peripheries of the electric wire connection portion and the electric wire. The waterproof member is constituted by a sticky tape having an adhesive. The sticky tape having the adhesive is wound, in a state where the temperature sensor is in contact with the electric wire connection portion, around outer peripheral surfaces of the electric wire connection portion and the temperature sensor and an outer peripheral surface of the electric wire.

An electric wire unit includes an electric wire, a terminal, a temperature sensor, and a waterproof member. The electric wire includes a conductor and an insulating sheath. The terminal includes an electric wire connection portion connected to the conductor of the electric wire. The temperature sensor detects the temperature of the electric wire connection portion. The waterproof member liquid-tightly covers the peripheries of the electric wire connection portion and the electric wire. The waterproof member is constituted by a sticky tape having an adhesive. The sticky tape having the adhesive is wound, in a state where the temperature sensor is in contact with the electric wire connection portion, around outer peripheral surfaces of the electric wire connection portion and the temperature sensor and an outer peripheral surface of the electric wire.

The present disclosure provides a protective shell for a multi-point temperature measuring device and a multi-point temperature measuring device. The protective shell includes: a shell body, with one end connected to a connecting base and the other end extending away from the connecting base. A cross-sectional area of an end of the shell body close to the connecting base is larger than a cross-sectional area of the end of the shell body away from the connecting body; the shell body is provided with a plurality of channels for extending temperature measuring elements; and ends of any two of the plurality of channels away from the connecting base are at different distances from the connecting base. The non-interfering channels ensure proper operation of the temperature measuring elements. The simple structure facilitates disassembly and replacement, enabling accurate and fast temperature detection at different positions.

The present disclosure provides a protective shell for a multi-point temperature measuring device and a multi-point temperature measuring device. The protective shell includes: a shell body, with one end connected to a connecting base and the other end extending away from the connecting base. A cross-sectional area of an end of the shell body close to the connecting base is larger than a cross-sectional area of the end of the shell body away from the connecting body; the shell body is provided with a plurality of channels for extending temperature measuring elements; and ends of any two of the plurality of channels away from the connecting base are at different distances from the connecting base. The non-interfering channels ensure proper operation of the temperature measuring elements. The simple structure facilitates disassembly and replacement, enabling accurate and fast temperature detection at different positions.

A temperature sensor includes: a thermosensitive element including a thermosensitive body, an extension wire having one end electrically connected to the thermosensitive body, and a sealing body made of an insulation material and covering a part of the extension wire and the thermosensitive body; a lead wire electrically connected to another end of the extension wire; and a covering body made of a resin and having a long shape and a rectangular cross-section, the covering body covering a part of the lead wire and the thermosensitive element. In a lateral direction of the covering body, a dimension of a region of the covering body covering the thermosensitive element is set less than a dimension of a region of the covering body covering the lead wire.

A temperature sensor includes: a thermosensitive element including a thermosensitive body, an extension wire having one end electrically connected to the thermosensitive body, and a sealing body made of an insulation material and covering a part of the extension wire and the thermosensitive body; a lead wire electrically connected to another end of the extension wire; and a covering body made of a resin and having a long shape and a rectangular cross-section, the covering body covering a part of the lead wire and the thermosensitive element. In a lateral direction of the covering body, a dimension of a region of the covering body covering the thermosensitive element is set less than a dimension of a region of the covering body covering the lead wire.