Electrical resistance unit for a vehicle and corresponding electrical resistance system, vehicle and method for configuring the electrical resistance unit

Abstract

The present invention relates to an electrical resistance unit (100) for a vehicle, comprising: at least two electrical resistors (1, 2, 3, N'), each consisting of at least one resistive element (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n''), and at least two connecting sections (10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N), wherein via which at least one phase (A, B, C, ..., N) can be connected to at least one of the resistive elements (10, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N) via at least two connecting sections (10A, 10'A, 10''A, 20, 20', 20'', 30, 30', 30'', n, n', n'').

Description

[0001] The present invention relates to an electrical resistance unit for a vehicle, an electrical resistance system with such an electrical resistance unit, a vehicle with at least one such electrical resistance unit and / or such an electrical resistance system, and a method for configuring the electrical resistance unit.

[0002] A single-phase electrical resistor unit typically has two connection terminals. Therefore, multiple electrical resistor units are required in multi-phase systems. Furthermore, three-phase systems, for example, may utilize different circuit configurations, such as delta or star connections, which in turn necessitate specific designs for the multiple resistor units being combined. This increases the variety of options and, consequently, the associated complexity.

[0003] The object of the present invention is to provide an electrical resistance unit that allows different configurations.

[0004] The problem is solved by the subject matter of the independent claims. Advantageous further developments are the subject matter of the dependent claims.

[0005] According to the invention, an electrical resistance unit for a vehicle comprises at least two electrical resistors, each formed from at least one resistance element, and at least two connecting sections. At least one phase can be selectively connected to at least one of the resistance elements via the at least two connecting sections.

[0006] Accordingly, an electrical resistance unit exists which can be freely configured by connecting at least one resistance element to at least one phase via at least one of the connection sections. For example, a phase can be connected to only one electrical resistance or to both of the at least two electrical resistances. In this respect, electrical resistances formed from one or more resistance elements can be combined to form a common electrical resistance for a phase. The electrical resistances combined into a common electrical resistance thus act as combined resistance elements for the common electrical resistance. Therefore, the total resistance for a phase is configurable. Alternatively or additionally, a first phase can be connected to one of the at least two electrical resistances and a second phase to the other of the at least two electrical resistances.Thus, as an alternative or supplement to configuring the total resistance per phase, it is also possible to implement various switching arrangements.

[0007] In one embodiment, the at least two connecting sections are configured to form a permanent connection between the at least one phase and the at least one resistive element.

[0008] A permanent connection, in this context, refers to a connection across the respective connection sections that is intended for the continuous operation of the resistor unit in a specific application. This permanent connection can, for example, be detachable via terminal blocks as connection sections for at least one phase. However, a permanent connection can also be permanently non-detachable, for example, by configuring a connection section as a solder joint. Thus, a permanent connection differs from a switchable connection, which can be changed even during operation of the electrical resistor unit.

[0009] The electrical resistance unit thus offers a pre-configuration option for various applications via the permanent connection. In other words, the resistance unit has several configuration options with regard to connectable phases and / or achievable total resistances, whereby an application-dependent configuration is then carried out during pre-configuration through appropriate permanent connections.

[0010] In one embodiment, at least one of the at least two electrical resistors has at least two resistance elements.

[0011] Thus, a phase can be connected, for example, via connecting sections in parallel to both of the at least two resistive elements, in order to adjust the total resistance across the single electrical resistor accordingly. Consequently, the total resistance for a phase can be adjusted not only via the connection to the electrical resistors, but also via the number of resistive elements of an electrical resistor connected to that phase.

[0012] An electrical resistance element is, for example, plate-shaped, with the electrical resistance then being composed of at least two stacked resistance elements, between which insulation is arranged. The electrical connection of the resistance elements can then be made via the phase and / or a further connecting section.

[0013] In one embodiment, the electrical resistance unit has at least one electrically conductive connecting rail which can be electrically connected to at least one phase and which in turn can be connected to at least one of the resistance elements via at least one of the at least two connecting sections.

[0014] The connecting rail can be used for the flexible coupling of phases, resistors, and / or resistive elements. For example, a connecting rail can extend across all resistive elements of an electrical resistor, a selection of electrical resistors, or all resistors, with a phase being connected to the connecting rail via a connecting section, and the connecting rail in turn being connected to the resistive elements it spans via respective connecting sections.

[0015] For the aforementioned flexible connection, the resistance elements of the electrical resistors are arranged in particular parallel to each other and the connecting rail runs transversely to the resistance elements.

[0016] In one embodiment, the electrical resistance unit has at least two connecting rails, one of which is not intended for connection to a phase.

[0017] The electrical resistance unit is preferably configured such that the number of connecting rails is greater than the maximum number of phases that can be connected. The remaining phase can then be used, for example, as a neutral conductor.

[0018] In one embodiment, the electrical resistance unit has at least three electrical resistors.

[0019] The electrical resistors can then be optionally connected to at least one phase according to a preconfiguration, but depending on the intended application, preconfigurations in the form of a delta connection or star connection with three phases can also be made.

[0020] In one embodiment, the electrical resistance unit has at least three, in particular four, connecting rails as described above.

[0021] As described above, three connecting rails, particularly in conjunction with three phases, allow for the simple implementation of delta or star configurations. If a fourth connecting rail is provided, the neutral conductor of a star configuration can also be implemented just as easily.

[0022] In a further aspect, the present invention relates to an electrical resistance system for a vehicle. The electrical resistance system comprises at least one previously described electrical resistance unit and at least one or more phases connected to at least one of the at least two electrical resistors.

[0023] The electrical resistance system can, for example, consist of a kit, where the electrical resistance unit can be pre-configured or is already pre-configured. The electrical resistance unit can also have more phases that are not yet connected to at least one of the electrical resistors than are required for a specific application (out of several possible applications), in order to then be connected to at least one electrical resistor as required for the application. Alternatively, the electrical resistance system can also be pre-configured with respect to both the electrical resistance unit and the phases to be connected to it.

[0024] In one embodiment, each phase is connected to only one of the at least two electrical resistors.

[0025] The total resistance of each phase can be adjusted by connecting each phase via respective connection sections to one or more resistance elements of one of at least two electrical resistors.

[0026] In one embodiment, the at least two electrical resistors are connected to each other on an output side that is not connected to the respective phase. This can be done, for example, at a neutral point according to a star configuration.

[0027] In one embodiment, each phase is connected to at least two of the at least two electrical resistors.

[0028] The total resistance can be further adjusted by connecting at least two of the at least two electrical resistors. In particular, a delta connection can also be implemented in this way, for example with three phases.

[0029] In one embodiment, at least one phase is connected in parallel to at least two of the at least two resistance elements of the at least one electrical resistor.

[0030] By connecting one phase in parallel with at least two of the at least two resistive elements of the at least one electrical resistor, the total resistance can be adjusted accordingly. Alternatively, at least one phase can be connected in series with two resistive elements.

[0031] The characteristics described above for the electrical resistance system are equally applicable to the electrical resistance system. Likewise, characteristics described for the electrical resistance system are transferable to the electrical resistance unit, provided they have not already been described therein.

[0032] In another aspect, the present invention relates to a vehicle with at least one previously described electrical resistance unit and / or an electrical resistance system.

[0033] The vehicle in question is, in particular, an electric vehicle or a hybrid vehicle that has a variety of electrical resistance systems. Accordingly, for each application requiring an electrical resistance system, such a system can be configured specifically for that application, starting from an electrical resistance unit.

[0034] The characteristics described above for the electrical resistance unit and / or electrical resistance system relating to the vehicle are equally applicable to the vehicle. Likewise, characteristics described for the electrical resistance unit and / or electrical resistance system relating to the vehicle are transferable to the electrical resistance unit and / or electrical resistance system, provided they have not already been described therein.

[0035] In another aspect, the present invention relates to a method for configuring an electrical resistance unit, comprising the steps of: Providing a previously described electrical resistance unit and Connect at least one phase to at least one resistive element via at least one connecting section.

[0036] This method enables application-specific pre-configuration of the electrical resistance unit or application-specific configuration of an electrical resistance system.

[0037] Features described in the description of the electrical resistance unit, the electrical resistance system, and / or the vehicle are directly or indirectly applicable to the process as process features. Likewise, features described for the process are directly or indirectly transferable as structural features to the electrical resistance unit, the electrical resistance system, and / or the vehicle, provided they have not already been described for this purpose.

[0038] Exemplary embodiments of the present invention are described below with reference to the accompanying drawings.

[0039] In detail, it shows Fig. 1 an electrical resistance unit according to a first exemplary embodiment; Fig. 2 a resistor arrangement according to the first exemplary embodiment in Fig. 1; Fig. 3 a resistance arrangement according to a second exemplary embodiment; Fig. 4 the configuration of the electrical resistance unit for a resistance arrangement according to Fig. 3; Fig. 5 a resistance arrangement according to a third exemplary embodiment; and Fig. 6 the configuration of the electrical resistance unit for a resistance arrangement according to Fig. 5.

[0040] Fig. Figure 1 shows an electrical resistance unit 100 according to a first exemplary embodiment. The resistance unit 100 comprises an electrical resistor 1 formed from three resistive elements 10, 10', 10'', an electrical resistor 2 formed from three resistive elements 20, 20', 20'', an electrical resistor 3 formed from three resistive elements 30, 30', 30'', and so on, up to an electrical resistor N' formed from three resistive elements n, n', n''. In other embodiments, the electrical resistors 1, 2, 3, ..., N' can also be formed from more or fewer than three resistive elements. The number of resistive elements of the electrical resistors 1, 2, 3, ..., N' can also vary for each electrical resistor 1, 2, 3, ..., N'.Each resistive element 10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n'' can be connected via a respective connecting section 10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N to at least one phase A, B, C, ..., N. The connection sections 10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N are configured in the present embodiment as solder joints for a permanent connection.

[0041] In the Fig. In the exemplary embodiment shown in Figure 1, a corresponding electrical resistance system can be formed in which a phase A is connected in parallel to a resistance element 10, 10', 10'' of the electrical resistor 1 via the connecting sections 10A, 10'A, 10''A. Similarly, a phase B can be connected in parallel to a resistance element 20, 20', 20'' of the resistor 2 via the connecting sections 20B, 20'B, 20''B, and a phase C can be connected in parallel to a resistance element 30, 30', 30'' of the resistor 3 via the connecting sections 30B, 30'B, 30''B. Finally, a phase N can be connected in parallel to a resistance element n, n', n'' of the resistor N' via the connecting sections nN, n'N, n''N.

[0042] Fig. Figure 2 shows a resistor arrangement 50 according to the first exemplary embodiment in Fig. 1. The resistor arrangement 50 forms an electrical resistance system in which phase A is connected as above. Fig. Phase 1 is connected to resistor 1, phase B to resistor 2 and phase C to resistor 3.

[0043] Fig. Figure 3 shows a resistor arrangement 50' according to a second exemplary embodiment. The resulting electrical resistor system has a triangular arrangement in which phase A is connected in parallel to electrical resistor 1 and electrical resistor 3, phase B to electrical resistor 1 and electrical resistor 2, and phase C to electrical resistor 2 and electrical resistor 3.

[0044] Fig. Figure 4 shows the configuration of the electrical resistance unit 100 for a resistor arrangement according to Fig. 3. The electrical resistance unit 100 additionally has three electrically conductive connecting rails 40A, 40B, 40C, each extending transversely across all parallel-arranged resistance elements 10, 10', 10'', 20, 20', 20'', 30, 30', 30''. Phase A is then electrically connected to connecting rail 40A, with connecting rail A for the triangular arrangement being electrically connected via connecting sections 10A, 10'A, 10''A to the resistance elements 10, 10', 10'' of electrical resistance 1 and via connecting sections 30A, 30'A, 30''A to the resistance elements 30, 30', 30'' of electrical resistance 3.Accordingly, phase B is connected to connecting rail 40B, which in turn is electrically connected via connecting sections 10, 10'B, 10B'' to the resistive elements 10, 10', 10'' of electrical resistance 1 and via connecting sections 20B, 20'B, 20''B to the resistive elements 20, 20', 20'' of electrical resistance 2. Phase C is electrically connected to connecting rail 40C, which in turn is electrically connected via connecting sections 20C, 20'C, 20''C to the resistive elements 20, 20', 20'' of electrical resistance 2 and via connecting sections 30C, 30'C, 30''C to the resistive elements 30, 30', 30'' of electrical resistance 3.

[0045] Fig. Figure 5 shows a resistor arrangement 50'' according to a third exemplary embodiment. The resulting electrical resistor system has a star configuration in which phase A is connected to resistor 1, phase B to resistor 2, and phase C to resistor 3. Resistors 1, 2, and 3 are connected to each other at a neutral point on the side opposite their respective phases a, b, and C.

[0046] Fig. Figure 6 shows the configuration of the electrical resistance unit 100 for a resistance arrangement 50'' according to Fig. 5. For this purpose, the electrical resistance unit 100 has, in addition to the three electrically conductive connecting rails 40A, 40B, 40C according to Fig. 4. Another electrically conductive connecting rail 40X is added, which extends transversely across all parallel resistor elements 10, 10', 10'', 20, 20', 20'', 30, 30', 30''. For the star connection, phase A is electrically connected to connecting rail 40A, which in turn is electrically connected to the resistor elements 10, 10', 10'' of resistor 1 via connecting sections 10A, 10'A, 10''A. Similarly, phase B is connected to connecting rail 40B, which in turn is electrically connected to the resistor elements 20, 20', 20'' of resistor 2 via connecting sections 20B, 20'B, 20''B. Phase C is electrically connected to the connecting rail 40C, which in turn is electrically connected via the connecting sections 30C, 30'C, 30''C to the electrical resistance elements 30, 30', 30'' of the electrical resistance 3.The 40X connecting rail is connected to all resistor elements 10, 10', 10'', 20, 20', 20'', 30, 30', 30'' via individual connecting sections and can be connected to a neutral conductor. For clarity, the connecting sections are shown in . Fig. 6 not again provided with reference numerals, whereby the information from Fig. 4 here can be transferred accordingly. For the connecting rail 40X, according to the above system, the reference numeral 10X would result for the connecting section of the connecting rail 40X with the resistance element 10, 10'X for the connecting section of the connecting rail 40X with the resistance element 10', etc.

[0047] The invention is not limited to the described embodiments. In particular, features described in relation to the embodiments, other described configurations and further developments of the invention can be combined with one another, provided they are not mutually exclusive. REFERENCE MARK LIST 1 resistor 2 Resistance 3 Resistance 10, 10', 10'' resistance element 10A, 10'A, 10''A connection section 10B, 10'B, 10''B connection section 20, 20', 20'' resistance element 20B, 20'B, 20''B connection section 20C, 20'C, 20''C Connection section 30, 30', 30'' resistance element 30A, 30'A, 30''A connection section 30°C, 30'C, 30''C Connection section 40A, 40B, 40C, 40X connecting rail 50'50' resistor arrangement 100 resistance units Phase 1 Phase B 2 Phase 3 N Phase N N' Resistance n, n', n'' resistance element nN, n'N, n''N connecting section X Neutral conductor

Claims

[1] Electrical resistance unit (100) for a vehicle, comprising: at least two electrical resistors (1, 2, 3, N'), each consisting of at least one resistive element (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n''), and at least two connecting sections (10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N), wherein via which at least one phase (A, B, C, ..., N) can be connected to at least one of the resistive elements (10, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N) via at least two connecting sections (10A, 10'A, 10''A, 20, 20', 20'', 30, 30', 30'', n, n', n''). [2] Electrical resistance unit (100) according to claim 1, wherein the at least two connection sections (10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N) are configured to form a permanent connection of the at least one phase (A, B, C, ..., N) with the at least one resistance element (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n''). [3] Electrical resistance unit (100) according to claim 1 or 2, wherein at least one electrical resistance (1, 2, 3) of the at least two electrical resistances (1, 2, 3, N') comprises at least two resistance elements (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n''). [4] Electrical resistance unit (100) according to one of the preceding claims, wherein the electrical resistance unit (100) has at least one electrically conductive connecting rail (40A, 40B, 40C, 40X) which is electrically connectable to the at least one phase (A, B, C, ..., N) and which in turn is connected via at least one of the at least two connecting sections (10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N) to at least one of the resistance elements (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n'') can be connected. [5] Electrical resistance unit (100) according to claim 4, wherein the electrical resistance unit (100) has at least two connecting rails (40A, 40B, 40C, 40X), wherein one of the connecting rails (40X) is not provided for connection to a phase. [6] Electrical resistance unit (100) according to any of the preceding claims, wherein the electrical resistance unit (100) has at least three electrical resistors (1, 2, 3, N'). [7] Electrical resistance unit (100) according to claim 6, wherein the electrical resistance unit (100) has at least three, in particular four connecting rails (40A, 40B, 40C, 40X) according to claim 4 or 5. [8] Electrical resistance system for a vehicle, comprising: at least one electrical resistance unit (100) according to one of the preceding claims and at least one or more phases (A, B, C, ..., N) that are connected to at least one of the at least two electrical resistors (1, 2, 3, N'). [9] Electrical resistance system according to claim 8, wherein each phase (A, B, C, ..., N) is connected to only one of the at least two electrical resistors (1, 2, 3, N'). [10] Electrical resistance system according to claim 9, wherein the at least two electrical resistors (1, 2, 3, N') are connected to each other on an output side not connected to the respective phase (A, B, C, ..., N). [11] Electrical resistance system according to claim 8, wherein each phase (A, B, C, ..., N) is connected to at least two of the at least two electrical resistors (1, 2, 3, N'). [12] Electrical resistance system according to any one of claims 8 to 11, wherein the at least one phase (A, B, C, ..., N) is connected in parallel with at least two of the at least two resistance elements (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n'') of the at least one electrical resistance (1, 2, 3, N') according to claim 3. [13] Vehicle with at least one electrical resistance unit (100) according to one of claims 1 to 7 and / or an electrical resistance system according to one of claims 8 to 12. [14] Method for configuring an electrical resistance unit (100) comprising the steps: Providing an electrical resistance unit (100) according to any one of claims 1 to 7, Connecting at least one phase (A, B, C, ..., N) with at least one resistive element (10, 10', 10'', 20, 20', 20'', 30, 30', 30'', n, n', n'') via at least one connecting section (10A, 10'A, 10''A, 10B, 10'B, 10''B, 20B, 20'B, 20''B, 20C, 20'C, 20''C, 30A, 30'A, 30''A, 30C, 30'C, 30''C, nN, n'N, n''N).

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