Abstract: A battery pack includes a housing and electrochemical cells disposed in the housing. The housing includes a container and a lid that closes an open end of the container. The container has a base, an outer wall the surrounds the base, and a first and a second inner wall disposed inside the outer wall. The first inner wall extends between, and is fixed to, a first portion and a third portion of the outer wall, and is spaced apart from a second portion and a fourth portion of the outer wall. The second inner wall extends between the first portion and the third portion, and is disposed between the first inner wall and the fourth portion. The second inner wall is movable relative to the outer wall such that spacing of the second inner wall from the first inner wall can be changed.

Abstract: A battery module having a battery module housing (2) which has a multiplicity of housing walls (3) which form an interior space (4), wherein a multiplicity of battery cells (22) is arranged in the interior space (4), and the battery module housing (2) furthermore has a cooling element receptacle (5), wherein a cooling element (12) of the battery module (1) is arranged in the cooling element receptacle (5) of the battery module housing (2).

Abstract: The invention relates to a current sensor comprising an electric conductor (10), through which a first current (I) can flow parallel to a first direction (R1) and which comprises three regions (21, 22, 23) immediately following on from each other in the first direction (R1). A middle region (22) of the three regions (21, 22, 23) comprises a conductor cross-sectional area that is smaller than a conductor cross-sectional area of each of the two outer regions (21, 23) of the three regions (21, 22, 23). A voltage sensor of the current sensor is designed to measure a first voltage between the two terminals (41, 42) thereof. The first voltage is the same as a voltage applied to a measuring region (22, 25) at least partially coinciding with the middle region (22).

Abstract: The invention relates to a housing (10) for accommodating a plurality of battery cells (20), in particular lithium-ion battery cells, wherein the housing (10), in particular a plastic housing, comprises a cooling device with an inlet point (30) and an outlet point (40) for an air stream (22) for cooling the battery cells (20). In addition, the housing (10) is designed as a single piece together with the cooling device integrated in the housing (10), and the cooling device additionally has spacers (34; 34a, 34b) for arranging all accommodated battery cells (20) with an intermediate space (23) for guiding air between the battery cells (20), by which means an air channel (25) is provided for the air stream (22) between the battery cells (20). The invention further relates to a battery pack (50) and to a motor vehicle comprising such a battery pack (50).

Abstract: A battery pack includes a housing and electrochemical cells disposed in the housing. The housing includes a container and a lid that closes an open end of the container. The container has a base, an outer wall the surrounds the base, and a first and a second inner wall disposed inside the outer wall. The first inner wall extends between, and is fixed to, a first portion and a third portion of the outer wall, and is spaced apart from a second portion and a fourth portion of the outer wall. The second inner wall extends between the first portion and the third portion, and is disposed between the first inner wall and the fourth portion. The second inner wall is movable relative to the outer wall such that spacing of the second inner wall from the first inner wall can be changed.

Abstract: The invention relates to a current sensor comprising an electric conductor (10), through which a first current (I) can flow parallel to a first direction (R1) and which comprises three regions (21, 22, 23) immediately following on from each other in the first direction (R1). A middle region (22) of the three regions (21, 22, 23) comprises a conductor cross-sectional area that is smaller than a conductor cross-sectional area of each of the two outer regions (21, 23) of the three regions (21, 22, 23). A voltage sensor of the current sensor is designed to measure a first voltage between the two terminals (41, 42) thereof. The first voltage is the same as a voltage applied to a measuring region (22, 25) at least partialy coinciding with the middle region (22).

Abstract: The invention relates to a temperature sensor (5) for measuring a temperature of a battery system (1) for storing electrical energy and also for supplying an electric motor of a motor vehicle with electrical energy. The temperature sensor (5) has a sensor head (6) and connection wires (7) electrically coupled to the sensor head. At least one of the connection wires (7) is at least partially formed as a spring element (8) or forms at least part of a spring element (8), wherein the spring element (8) is formed as a helical spring or as twisted.

Abstract: The invention relates to a temperature sensor (5) for measuring a temperature of a battery system (1) for storing electrical energy and also for supplying an electric motor of a motor vehicle with electrical energy. The temperature sensor (5) has a sensor head (6) and connection wires (7) electrically coupled to the sensor head. At least one of the connection wires (7) is at least partially formed as a spring element (8) or forms at least part of a spring element (8), wherein the spring element (8) is formed as a helical spring or as twisted.

Abstract: The invention relates to a method for measuring an electric current of a battery (10) with multiple battery modules (11), having the step of measuring a temperature related to the battery module (11). According to the method, the temperature of a connector is first determined for at least one battery module (11) using the measured temperature and a temperature model, and the electric resistance of the connector is determined using a resistance model and the temperature of the connector. The electric voltage which drops at the connector is then measured, and the electric current flowing through the connector is calculated from the voltage. The invention additionally relates to a corresponding device and to a battery comprising such a device.

Abstract: A battery module having a battery module housing (2) which has a multiplicity of housing walls (3) which form an interior space (4), wherein a multiplicity of battery cells (22) is arranged in the interior space (4), and the battery module housing (2) furthermore has a cooling element receptacle (5), wherein a cooling element (12) of the battery module (1) is arranged in the cooling element receptacle (5) of the battery module housing (2).

Abstract: A battery module (19) having a number of electrically interconnected battery cells (10), wherein the individual battery cells (10) are temperature-controlled by means of a temperature control fluid (70). Between the battery cells (10), there extends a duct system (30, 62, 66, 68) through which the temperature control fluid (70) flows. The duct system (30, 62, 66, 68) is separated completely from a degassing system (16, 54) of the battery cells (10).

Abstract: A battery pack includes a housing and electrochemical cells disposed in the housing. The housing includes a container and a lid that closes an open end of the container. The container has a base, an outer wall the surrounds the base, and a first and a second inner wall disposed inside the outer wall. The first inner wall extends between, and is fixed to, a first portion and a third portion of the outer wall, and is spaced apart from a second portion and a fourth portion of the outer wall. The second inner wall extends between the first portion and the third portion, and is disposed between the first inner wall and the fourth portion. The second inner wall is movable relative to the outer wall such that spacing of the second inner wall from the first inner wall can be changed.

Abstract: The invention relates to a method for measuring an electric current of a battery (10) with multiple battery modules (11), having the step of measuring a temperature related to the battery module (11). According to the method, the temperature of a connector is first determined for at least one battery module (11) using the measured temperature and a temperature model, and the electric resistance of the connector is determined using a resistance model and the temperature of the connector. The electric voltage which drops at the connector is then measured, and the electric current flowing through the connector is calculated from the voltage. The invention additionally relates to a corresponding device and to a battery comprising such a device.

Abstract: The invention relates to a housing (5; 10, 20, 30) for a plurality of battery cells (40). The housing (5; 10, 20, 30) comprises three main components (10, 20, 30). A first main component is formed by a container (10) for receiving a plurality of battery cells (40), a second main component is formed by a support (20) for electric and/or electronic components (22), and a third main component is formed by a cover (30). According to the invention, the electric and/or electronic components (22) are additionally arranged at least partly on a circuit board (24). The invention further relates to a battery cell module (50), to a motor vehicle with a battery cell module (50), and to a method for producing a battery cell module.

Abstract: The invention relates to a housing (10) for accommodating a plurality of battery cells (20), in particular lithium-ion battery cells, wherein the housing (10), in particular a plastic housing, comprises a cooling device with an inlet point (30) and an outlet point (40) for an air stream (22) for cooling the battery cells (20). In addition, the housing (10) is designed as a single piece together with the cooling device integrated in the housing (10), and the cooling device additionally has spacers (34; 34a, 34b) for arranging all accommodated battery cells (20) with an intermediate space (23) for guiding air between the battery cells (20), by which means an air channel (25) is provided for the air stream (22) between the battery cells (20). The invention further relates to a battery pack (50) and to a motor vehicle comprising such a battery pack (50).

Abstract: A battery module (19) having a number of electrically interconnected battery cells (10), wherein the individual battery cells (10) are temperature-controlled by means of a temperature control fluid (70). Between the battery cells (10), there extends a duct system (30, 62, 66, 68) through which the temperature control fluid (70) flows. The duct system (30, 62, 66, 68) is separated completely from a degassing system (16, 54) of the battery cells (10).

Abstract: An improved laser pet toy that entertains pets, especially cats. The pet toy comprises a housing containing a laser source which projects a laser beam into a mirror. In turn, the mirror forecasts the beam through a transparent window set in the housing and projects the beam onto an opaque surface. The random movement of the beam is provided by the motion of the pivoting mirrors which is driven by a motor and a plurality of arm members.

Abstract: An improved laser pet toy that entertains pets, especially cats. The pet toy comprises a housing containing a laser source which projects a laser beam into a reflective surface. In turn, the reflective surface forecasts the beam through a transparent window set in the housing and projects the beam onto an opaque surface. The random movement of the beam is provided by the motion of the reflective surface which is driven by a drive member and a plurality of arm members.