Battery cell suitable for wireless communication of data signals, battery comprising at least one cell

Abstract

A battery cell suitable for wireless communication of data signals, a battery comprising at least one cell is disclosed. A battery comprises at least one battery cell (10, 10 '), the cell comprising in a housing structure at least one slave unit management unit (BMS) and at least one communication unit (14) for wireless communication of data or parameters or measurement signals with a communication unit (24) of a host battery management unit (20). The unit comprises a combined component for enhancing or promoting good reception of radio frequency signals with the host battery management unit (20), the combined component being in a portion of a wall of the unit housing structure or forming a portion of an external or internal configuration plate deployed on a wall facing the unit communication unit (14).

Description

Technical Field

[0001] The present invention relates to a battery unit adapted for wireless communication of data signals with a host management unit of the battery.

[0002] The invention also relates to a battery comprising at least one cell adapted for wireless communication of data signals with a host management unit of the battery. Background Art

[0003] The battery consists of a plurality of cells connected in series or in parallel. These cells typically have different characteristics in terms of production, temperature distribution or life curve. In addition, they often have different charge states, which degrades the battery and reduces its operating efficiency. In order to optimize the capacity and life of the battery, a BMS (Battery Management System) is traditionally used, which is an electronic system for controlling the charge state of the battery cells. The system balances the charge of each cell by short-circuiting certain cells or redistributing energy between cells.

[0004] In this regard, patent EP 3 605 778 B1 can be cited, which describes a balancing unit mounted on a battery cell. The balancing unit includes components for measuring cell state parameters, wireless communication components for sending and receiving state parameters, and wireless energy transfer components. However, the wireless communication components are generally located within each cell and the wireless communication of data to the cell balancing and data management system may encounter obstacles to wireless communication through the cell wall, which may affect the successful communication of the wireless data signal to be processed by the electronic system.

[0005] Patent application EP 3 517 350 A1 describes a wireless battery management system and a battery pack equipped with the same. The wireless battery management system includes a master BMS and a plurality of slave BMSs, the master BMS being configured to transmit a first radio frequency (RF) signal including a status detection command over a first wireless channel, and the plurality of slave BMSs being coupled to one or more battery modules in a one-to-one correspondence. Each of the slave BMSs is configured to detect status information of a battery module to which the corresponding slave BMS is coupled in response to the first RF signal, and to transmit a second RF signal indicating the battery module status information via the first wireless channel. Since the transmission of bidirectional messages by wireless data or parameter RF signals occurs through the walls of the housing of each battery pack or battery cell, the transmission of bidirectional messages by RF signals through at least one wall of the housing of each cell may be reduced or disturbed or interfered with due to one or more materials constituting the walls of the housing of each cell. Summary of the invention

[0006] The invention therefore relates to a battery unit adapted for wireless communication of bidirectional messages by means of data or parameter signals with a host battery management unit. According to the features of independent claim 1, the unit comprises components incorporated in parts of a wall of the unit housing and / or forming parts of an external or internal configuration panel to enable appropriate transmission of wireless bidirectional messages by means of RF data or parameter signals.

[0007] Specific forms of components combined with a wall portion of each battery cell or forming part of an outer or inner configuration plate for good wireless bidirectional transmission of RF data or parameter signals are defined in dependent claims 2 to 8.

[0008] According to the features of independent claim 9, a further aspect of the invention relates to a battery comprising at least one cell adapted for wireless communication of bidirectional messages via RF data or parameter signals with a battery host management unit or external to the battery.

[0009] A specific form of the battery is defined in dependent claims 10 to 17, and the battery may include one or more battery cells substantially connected in series with each other, and each battery cell includes a component combined with a wall portion of each battery cell and / or forming part of an external or internal configuration panel for appropriate wireless transmission of two-way messages via RF data or parameter signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The objects, advantages and features of a battery cell and a battery having at least one cell comprising components for improving or enabling good reception or transmission of RF wireless data or parameter signals will become more apparent in the following non-limiting description with reference to the accompanying drawings, in which:

[0011] - Figure 1a Various electrical or electronic components constituting a power supply battery, in particular for a vehicle, according to the invention are represented, the power supply battery comprising a number of battery cells adapted for wireless communication of bidirectional messages via RF signals of data or parameters with one or two host battery management units for controlling each cell,

[0012] - Figure 1b The present invention shows various electrical or electronic components constituting a power supply battery, in particular for a vehicle. Figure 1a A variation of the power supply battery comprises a plurality of battery cells adapted for wireless communication of bidirectional messages of data or parameters with one or two host controlled battery management units per cell via RF couplers,

[0013] - Figure 2a shows a battery cell with two terminals as presented in a first execution form of the invention,

[0014] - Figure 2b Shown in Figure 2a An expanded view of a battery cell is shown in FIG.

[0015] - Figure 2c A first implementation of a component of a battery cell is shown; Figure 2a As shown in and as represented according to the invention the components represent a board with through holes disposed on the outside on the unit to improve the reception or transmission of data or parameter signals; and at least one slave unit management unit (slave BMS); and at least one communication unit for wirelessly communicating bidirectional messages with a communication unit of a master battery management system through an RF coupler of data or parameter or measurement signals,

[0016] - Figure 2c1 Expressed as Figure 2c A partial cross section of a battery cell according to a first execution form of the component is shown in FIG. 1 , wherein the component forming part of the plate is arranged externally on the cell,

[0017] - Figure 2c2 Expressed as Figure 2c : a partial cross section of a deformation of a battery cell according to a first execution form of the component, in which the component forming part of the plate is arranged on the inside of the cell,

[0018] - Figure 3a shows a battery cell with two terminals as presented in a second execution form of the invention,

[0019] - Figure 3b Indicated in Figure 3a An expanded view of a battery cell is shown in FIG.

[0020] - Figure 3c A second implementation form of the components of the battery cell is shown; wherein the components according to the invention are represented by Figure 3a a through hole made in a wall portion of the battery cell shown in the figure to improve the reception or transmission of data or parameter signals; and at least one slave unit management unit (slave BMS); and at least one communication unit for wirelessly communicating bidirectional messages with the communication unit of the master battery management system through an RF coupler of data or parameter or measurement signals,

[0021] - Figure 3c1 Expressed as Figure 3c , a partial cross section of a battery cell according to a first embodiment of the component, wherein the component is integrated in a wall section of the cell housing,

[0022] - Figure 3c2 Expressed as Figure 3c FIG. 1 shows a deformed partial cross section of a battery cell according to a second embodiment of the component,

[0023] - Figure 4a shows a battery cell with two terminals as presented in a third execution form of the invention,

[0024] - Figure 4b Indicated in Figure 4a An expanded view of a battery cell is shown in FIG.

[0025] - Figure 4c A third execution form of a component of a battery cell is shown; wherein the component according to the invention represents a plate with through holes disposed externally on the cell and by Figure 4a a through hole made in a wall portion of the battery cell shown in the figure to improve the reception or transmission of data or parameter signals; and at least one slave unit management unit (slave BMS); and at least one communication unit for wirelessly communicating bidirectional messages with the communication unit of the master battery management system through an RF coupler of data or parameter or measurement signals,

[0026] - Figure 4c1 Expressed as Figure 4c , a partial cross section of a battery cell according to a third execution form of the component, wherein the component is combined in a partial wall of the cell housing and the component forming part of the plate is arranged on the outside of the cell,

[0027] - Figure 4c2 Expressed as Figure 4c FIG. 1 is a partial cross section of a modification of a battery cell according to a third embodiment of the component, wherein the component forming part of the plate is arranged on the inside of the cell,

[0028] - Figure 5a to Figure 5c Three embodiments of means according to the invention according to the first and third execution forms mounted on each cell of a battery to improve the reception and transmission of RF data or parameter signals are shown. DETAILED DESCRIPTION

[0029] In the following description, reference is made to batteries, generally to batteries used to power vehicles (which are primarily cars). However, it may also relate to ships, submarines, aircraft, trains, construction machinery or any other vehicle that may be powered by batteries for its operation or movement.

[0030] According to the invention, components for improving the transmission of bidirectional messages by RF signals, incorporated in the wall of the cell housing and / or forming part of the external or internal configuration plate, make it possible to maintain the functionality of the battery. Each of these components is in contact with a polymer layer that preserves the qualities of the battery regarding its long-term impermeability to liquids, hydrogen (O2) and moisture.

[0031] According to the present invention, the components forming part of the external configuration plate are meant to be components combined on a plate which is implemented in the part of the wall outside the battery cell housing. Likewise, the components forming part of the internal configuration plate are meant to be components combined on a plate which is implemented in the part of the wall inside the battery cell housing. According to the present invention, the components combined in the part of the wall of the cell housing are meant to be components present in the part of the wall of the cell housing.

[0032] It should be noted that different types of battery cells can be utilized. It can be a "pouch" cell. This pouch cell is made with all its electronic or electrical components under vacuum in its housing box. A second type of cell is a "prismatic" cell, which is a plastic or metal box containing all the electronic or electrical components. Finally, a third form of cell is a cell with a cylindrical outer shape, which includes all the electronic components that are then also used for wireless communication with a host battery management unit or a central battery management unit.

[0033] Electrical components for different types of cells include one or more electrochemical units for generating electrical energy.

[0034] Each electrochemical unit includes electrodes including active materials or cathode active materials and anode active materials, and an electrolyte that is sensitive to moisture and dioxygen (O2) or air.

[0035] Each electrochemical unit or units may optionally include a protective coating that protects the unit from moisture and hydrogen (O2) or air.

[0036] The unit further comprises current collectors, terminals or taps for transporting electrical energy.

[0037] Each cell wall or cell housing wall of the battery cell case has an inner surface and an outer surface; and each wall can be single-layered or multi-layered. Each layer of the cell housing wall includes metal or polymer.

[0038] The cell housing wall having an inner surface and an outer surface is an insulating wall. In particular, the outer surface of the cell housing wall is typically covered with an insulating material that ensures electrical neutrality to said surface. The inner surface may or may not be electrically neutral.

[0039] Single-layer cell housing walls comprising metal battery cell cases are typically coated with an insulating material that is electrically neutral with respect to the outer surface of the cell housing.

[0040] The battery includes at least one battery cell in a housing (not shown) for providing a power supply for operation or movement of the vehicle when the vehicle is charged through positive and negative output terminals. For example, in the case of a pouch cell, one or more taps present in the electrochemical unit of the pouch cell are electrically connected to produce an output terminal. In the battery housing, the battery includes at least one battery cell. However, such a battery may include a plurality of battery cells, which are preferably connected in series with each other so that all cells provide a supply voltage to the positive and negative output terminals of the battery. The cells of the battery may also be connected in parallel with each other or connected by combining cells connected in parallel and cells connected in series one by one.

[0041] Each battery cell includes one or more electrochemical units in a housing structure, the electrochemical units including an electrolyte, which may be solid, liquid, or in gel (or semi-solid) form.

[0042] As shown below Figure 1a and Figure 1b As explained, each unit comprises an electronic assembly including a cell or battery management unit and a communication unit including at least one antenna (at Figure 1a ) or for RF couplers for radio frequency signals, for example in the near field ( Figure 1b ). The unit communication unit also enables data or parameters such as the charge state of the battery or measurement signals to be transmitted via the same receiving antenna or a further transmitting antenna. In this case, it is preferred to use the same antenna for receiving and transmitting the wireless data or parameter signals.

[0043] In order to achieve wireless reception of radio frequency signals for all battery cells, a cable can be provided. On the one hand, the cable is connected to a host management control unit in the battery for controlling all battery cells, and on the other hand, the cable is deployed near each receiving and transmitting antenna of the battery cell in a near-field configuration so as to communicate wirelessly with each battery cell to constitute near-field communication.

[0044] Means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals can be realized by means of a plate pierced with various through holes, which are in direct contact with at least one layer of polymer. Each layer of polymer is impervious to liquid intrusion and is impermeable to hydrogen (O2) and moisture.

[0045] Another means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals can be realized by means of the cell housing being directly pierced with various through holes, which are in direct contact with at least one layer of polymer. Each layer of polymer is impervious to liquid intrusion and is impermeable to hydrogen (O2) and moisture.

[0046] Further means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals can be realized by means of a combination of means of the unit housing directly pierced with various through holes and by means of a plate pierced with various through holes. The through holes on the unit housing and the through holes on the plate are aligned. These aligned through holes are also in direct contact with at least one layer of polymer, wherein the polymer layer is impervious to liquid intrusion and is impermeable to hydrogen (O2) and moisture.

[0047] For Figure 2c , Figure 3c and Figure 4c For each of the implementations shown in , each via and each polymer layer in direct contact with the via is transparent to the electromagnetic signals necessary for bidirectional communication and the RF coupler will be able to exchange its communication signals therethrough.

[0048] According to the invention described below, each battery cell includes components for improving and facilitating wireless reception of data or parameter signals, in particular by nearby radio frequency signals transmitted by cables deployed near each battery cell. Several alternative designs are described below with reference to the figures, which are shown to describe various components used to improve and facilitate the reception of wireless data or parameter signals and the transmission of RF data or parameter signals from each cell in the battery to the host management and control unit. However, it is conceivable that cables are not used in the battery for the wireless reception and transmission of data or parameters or measurement signals, in particular from each cell in question and the host management and control unit.

[0049] Generally, a battery comprises several battery cells, which are generally connected in series one after another through their external electrical connection terminals. The voltage of each cell is generally controlled so as to be able to redistribute the electrical charge equally in each cell one after another so as not to damage the battery.

[0050] Figure 1a A specific case of a battery 1 is shown, which typically includes at least a first battery cell 10 having a set of different electronic components 11, which can be connected together or at least connected to electrical connection terminals 2 and 3, which generally open outward from the upper wall of the case structure of the cell 10 for electrical connection with other cells or parts of the battery 1.

[0051] The battery 1 also includes a first battery management unit or system 20, which is responsible for communicating with the first unit 10. In the case where the battery 1 includes several units, for example two units 10 and 10', the first host battery management unit can also communicate wirelessly with the second unit 10' of the battery 1 in order to monitor, for example, the charge state 15 of each unit, various parameters of each unit or other elements of the unit, temperature, identifiers. The communication between the host-defined battery management unit 20 and the slave-defined units 10, 10' provided in the battery 1 is carried out by wireless communication using RF radio frequency signals. Typically, the battery 1 may include an electrical cable 4, which is deployed in the battery near each wireless communication unit 14 of the unit 10, 10'. As in Figure 1a As shown in , communication is achieved by transmission of bidirectional wireless messages, for example by data or parameter signals 5 via a cable 4 which is connected at one end to the communication unit 24 of the first host battery management unit 20 and to the communication unit 14 of each unit.

[0052] Each unit 10 , 10 ′ first wirelessly receives an RF signal transmitted by the first active host battery management unit 20 , and upon request of the active host battery management unit 20 , the first unit 10 shown responds to the active host battery management unit 20 by transmitting an RF signal via the connection cable 4 .

[0053] In this Figure 1a In the figure, for simplicity, only two units are shown, battery units 10, 10' are shown, but several other units may also be provided. In addition, a second host battery management unit 20' may also be provided, which is placed in an inactive state when the first host battery management unit 20 is active. However, each of the two battery management units 20, 20' can wirelessly transmit bidirectional messages through RF signals of data or parameters or measurements wirelessly transmitted by each unit 10, 10' of the battery 1 through a communication unit 24. In each host battery management unit 20 and the redundant host 20', an electronic component 25 is provided for monitoring the total voltage and total current 26 of the battery.

[0054] Figure 1b Shown in Figure 1a 4. A RF coupler 28 is arranged along the cable 4 close to each cell 10, 10' of the battery 1, each of the RF couplers 28 being connected to the metal wire 27 via an open loop portion of the cable 4. In each circuit 10, 10', an RF coupler 14 is provided for connection with a communication unit for transmitting bidirectional messages transmitted by RF signals of data or parameters or measurement RF signals 5.

[0055] Refer to below Figure 2a to Figure 2c , Figure 2c1and Figure 2c2 A first implementation of a component of a battery cell for improving and enhancing or facilitating the correct transmission of bidirectional messages via RF signals of data or parameters or measurement signals is explained.

[0056] Figure 2a A front side view of a first cell 10 as presented in a first execution form of a component of a battery cell is shown, the cell being adapted for use with a host battery management unit ( Figure 2c ) wireless communication of two-way messages via RF signals of data or parameter signals. The first unit 10 includes a first unit housing wall 40 and a second unit housing wall 40a ( Figure 2a to Figure 2c , Figure 2c1 , Figure 2c2 ). Both the cell housing walls 40 and 40a have an outer surface and an inner surface. Terminals 2 and 3 are output terminals of the battery cell and establish an electrical connection.

[0057] The first wall 40 of the first unit 10 comprises components 30, 31, wherein through holes 31 are pierced on the insulating plate 30 to enable appropriate transmission of wireless bidirectional messages by RF signals of data or parameter signals. The plate 30 with through holes 31 is attached to the outer surface 44 of the first unit housing wall 40. The through holes 31 are in direct contact with the polymer layer 32 ( Figure 2a to Figure 2c , Figure 2c1 , Figure 2c2 ). Dotted Line( Figure 2a to Figure 2c ) indicates that the through hole 31 is located behind the polymer layer 32.

[0058] Figure 2b Shown in Figure 2a 1. The first unit 10 includes a first unit housing wall 40 and a second unit housing wall 40a. The unit wall 40 has an inner surface 43 and an outer surface 44 ( Figure 2a to Figure 2c , Figure 2c1 and Figure 2c2 The cell wall 40a has an inner surface 43a ( Figure 2b ) and outer surface 44a (not shown).

[0059] The first unit 10 further includes two first electrodes 45 sandwiching a second electrode 46, a first separator 47, and a second separator 48. Taps 451 and 452 exist on the first electrode 45. The second electrode 46 has a tap 461.

[0060] The two first electrodes 45, the second electrode 46 and the first separator 47 and the second separator 48 are assembled according to the prior art. There are taps 451, 452 and 461 for electrical connection. This assembly of electrodes and separators is an electrochemical unit 29 and is included in Figure 2b The electrolyte is not shown. Figure 2a Terminal 2 of the first unit 10 shown in FIG. 1 is connected by making taps 451 and 452 ( Figure 2b ) to obtain it. Figure 2a Terminal 3 shown is as in Figure 2b Tap 461 is shown in FIG.

[0061] The electrochemical unit 29 is hermetically sealed from the external environment under vacuum using a first housing wall 40 and a second housing wall 40 a.

[0062] The unit housing walls 40, 40a may be single-layered or multi-layered.

[0063] The unit housing wall 40 may include a polymer, wherein the polymer may be selected from the group consisting of polypropylene, polyethylene terephthalate, or polytetrafluoroethylene. The unit housing wall 40 may also partially include a metal, wherein the metal may be selected from the group consisting of aluminum, steel. The region of the unit housing wall 40 that includes metal may include an additional insulating layer to provide electrical neutrality for the entire unit housing wall 40.

[0064] Figure 2c A first implementation of means 30, 31 for improving and promoting or facilitating the correct transmission of bidirectional messages via RF signals of data or parameters or measurement signals from the first unit 10, the signals following the signals previously transmitted by the first host battery management unit 20. The signals transmitted by the first host battery management unit 20 are transmitted directly wirelessly or via a cable 4 ( Figure 1b ) is transmitted to the first unit 10, the coupler 28 is arranged to be connected with the Figure 1b Each antenna (not shown) of the communication unit (COM) of the first unit 10 or the second unit 10' shown in FIG.

[0065] Means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals can be realized by means of a plate 30 pierced with various through holes 31, which are in direct contact with a polymer layer 32. The polymer layer 32 is protected from intrusion by liquids, hydrogen (O2) and moisture, and gives access to the communication antenna (not shown) of the first unit 10, which is generally located in the housing structure of the first unit 10. The antenna of the communication unit 14 of the first unit 10 can be adapted to first receive the transmitted signal. The various shapes of the through holes, etc. can be the same or of varying sizes.

[0066] The first unit 10 includes a wireless communication unit 14, which is generally integrated into the unit housing structure or located within the unit. The communication unit can be directly linked to an RF coupler in the communication unit, which typically includes an antenna (not shown) that can be used for both reception and wireless transmission of RF radio frequency signals toward the first host battery management unit 20.

[0067] As in Figure 2c As shown in FIG. 1 , the RF signal transmitted by the first host battery management unit 20 passes through the cable 4 so as to approach the communication unit of the first unit 10 (unit 1) or other units. The cable 4 is arranged to wirelessly transmit a bidirectional message through the RF signal of data or parameters or measurements at a plate 30 pierced with a through hole 31, and the plate 30 pierced with a through hole 31 is arranged between the transmission of the wireless signal from the first host battery management unit 20 and the wireless communication unit 14 of the first unit 10. The communication unit (COM) is indicated using a dotted line, meaning that the unit exists within the unit.

[0068] More generally, means for improving and promoting good reception of radio frequency signals using the wireless communication unit 14 of the first unit 10 include providing a through hole 31 at the location of an antenna (not shown) of the communication unit 14 of the first unit 10, which may be an antenna made on a printed circuit.

[0069] The first unit 10 (unit 1) includes an insulating unit wall 40 ( Figure 2a to Figure 2c , Figure 2c1 and Figure 2c2 ) and 40a( Figure 2b , Figure 2c1 , Figure 2c2 ), so that signals can be correctly sent and received. The wireless communication unit 14 of the set of different electronic components 11 of the first unit 10 also includes an insulating housing structure, so that signals can be correctly sent and received.

[0070] In this first execution of the component, through holes 31 are mainly made through a board 30 made of insulating material and fixed to an insulating wall portion facing the wireless communication unit (COM) 14. The through holes 31 pierced on the board 30 are in direct contact with the polymer layer 32 ( Figure 2a to Figure 2c , Figure 2c1 , Figure 2c2 ).

[0071] The insulating plate 30 may include a polymer and may be selected from the group consisting of polypropylene, high-density polyethylene, or polytetrafluoroethylene.

[0072] The polymer layer 32 may be selected from the group consisting of polypropylene, polyethylene terephthalate, or polytetrafluoroethylene. The polymer layer 32 directly contacting the through hole 31 may be added to the board 30 using an attaching member such as glue or a welding member.

[0073] The plate 30 may be attached to the outer surface 44 or the inner surface 43 of the first unit housing wall 40 of the first unit 10 using an attachment member such as glue or a welding member.

[0074] In a variation of the first implementation, the insulating walls 40 and 40a may be single-layered or multi-layered.

[0075] In a further variant of the first execution form, there may be no polymer layer 32 in direct contact with the through hole 31 .

[0076] Figure 2c The dotted line 2c11 in represents the line along which the section is cut to represent a cross section of the unit (unit 1) and in particular the various components 30 and 31 for improving and promoting or facilitating the correct transmission of bidirectional messages.

[0077] exist Figure 2c1 and Figure 2c2 A cross section of unit 1 along line 2c11 is presented in FIG. Figure 2c shows a top view of a cell wall 40 of a first cell 10 with components for improving and enhancing or facilitating the proper transmission of two-way messages, Figure 2c1 and Figure 2c2 A cross section of the first unit 10 cut along line 2c11 rotated by 90° is shown.

[0078] Figure 2c1 Indicated in Figure 2c 1. A cross section of a battery cell 10 is shown in FIG. The electrochemical unit 29 (electrochemical unit) of the cell 10 is present within the first cell 10 between the first cell housing wall 40 and the second cell housing wall 40a. The figure shows a plate 30 with through holes 31, which is present at the outer surface 44 of the first cell housing wall 40. The plate 30 is clamped between the polymer layer 32 and the outer surface 44 of the first cell 10. The through holes 31 on the plate 30 are in direct contact with the polymer layer 32. A set of different electronic components 11 with a wireless communication unit 14 are present directly at the inner surface 43 of the first cell housing wall 40.

[0079] Figure 2c2 According to Figure 2c 4. A deformed partial cross section of a battery cell of a first execution of a component is shown in FIG. 4, wherein the component forming part of a plate is disposed on an inner surface 43 of a first cell housing wall 40. Figure 2c2 and Figure 2c1 The difference is that Figure 2c2A board 30 with through holes 31 is shown to be present on the inner surface 43 of the first unit housing wall 40. A polymer layer 32 is sandwiched between the board 30 and a set of different electronic components 11 with the wireless communication unit 14.

[0080] Refer to the following Figure 3a to Figure 3c , Figure 3c1 and Figure 3c2 A second implementation form of a component of a battery cell for improving and enhancing or facilitating the correct transmission of bidirectional messages via RF signals of data or parameters or measurement signals is explained.

[0081] Figure 3a Shown is a front side view of a first unit 10 as presented in a second execution of components of a battery unit, the unit being adapted for wireless communication with a host battery management unit via two-way messaging of RF signals for data or parameter signals. Figure 3a and Figure 2a The difference is that the first wall 40 of the first unit 10 is multi-layered and includes features 41 (through holes 41) pierced through the wall portion 411 of the unit housing wall 40 to enable appropriate transmission of wireless bidirectional messages via RF data or parameter signals. Figure 3a and Figure 2a The difference is that the plate 30 with the through hole 31 is not used, but the through hole 41 is directly on the first unit housing wall 40.

[0082] The cell housing walls 40 and 40a include three layers 4111, 4112, and 4113. The through hole 41 on the first cell housing wall 40 passes through all the layers 4111, 4112, and 4113 of the cell wall 40. The through hole 41 is in direct contact with the polymer layer 42 ( Figure 3a to Figure 3c , Figure 3c1 ). The dotted line indicates that the polymer layer 42 exists within the first unit 10 (unit 1).

[0083] Figure 3b Shown in Figure 3a An expanded view of the first unit 10 is shown in FIG. Figure 3b and Figure 2b The difference is that Figure 3a The first wall 40 and the second wall 40a are multi-layered and the through hole 41 on the first unit housing wall 40 passes through all layers 4111, 4112 and 4113 of the unit wall 40. The through hole 41 is also in direct contact with the polymer layer 42 ( Figure 3a to Figure 3c , Figure 3c1 ). The dotted line indicates that the polymer layer 42 exists within the first unit 10 (unit 1). Figure 3c and Figure 2c The difference is that the plate 30 with the through hole 31 is not used, but the through hole 41 is directly on the first unit housing wall 40.

[0084] Typically, layer 4112 comprises a metal, wherein the metal may be selected from the group consisting of aluminum and steel. Typically, layers 4111 and 4113 comprise a polymer, wherein the polymer may be selected from the group consisting of polypropylene, polyethylene terephthalate, or polytetrafluoroethylene.

[0085] The polymer layer 42 directly contacting the through hole 41 may be selected from the group consisting of polypropylene, polyethylene terephthalate or polytetrafluoroethylene, and attached at the inner surface 43 or outer surface 44 of the first wall portion 40 using an attaching member such as glue or a welding member.

[0086] Figure 3c A second implementation of means 41 for improving and promoting or facilitating the correct transmission of bidirectional messages via RF signals of data or parameters or measurement signals from the first unit 10, the signals following the signals previously transmitted by the first host battery management unit 20. The signals transmitted by the first host battery management unit 20 are transmitted directly wirelessly or via a cable 4 ( Figure 1b ) is transmitted to the first unit 10, the coupler 28 is arranged to be connected to the first unit 10 or in particular Figure 1b Each antenna (not shown) of the communication unit (COM) of the second unit 10' shown in FIG.

[0087] Figure 3c and Figure 2c The difference is that the means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals are realized by means of directly piercing the housing of the unit with various through holes 41. The through holes 41 are in direct contact with the polymer layer 42. The polymer layer 42 is impervious to the intrusion of liquids, hydrogen (O2) and moisture.

[0088] Means for improving and promoting good reception of radio frequency signals using the wireless communication unit 14 of the first unit 10 include providing a through hole 41 made at the location of the antenna (not shown) of the communication unit 14 of the first unit 10, which may be an antenna made on a printed circuit.

[0089] In a variation of the second execution form, the first unit housing wall 40 and the second unit housing wall 40a may be single-layered.

[0090] Figure 3c The dotted line 3c11 in represents the line along which the section is cut to represent a cross section of the unit (unit 1) and in particular of the various components 41 and 32 combined in the partial wall for improving and promoting or facilitating the correct transmission of bidirectional messages.

[0091] exist Figure 3c1 and Figure 3c2A cross section of unit 1 along line 3c11 is presented in FIG. Figure 3c shows a top view of a cell wall 40 of a first cell 10 with components for improving and enhancing or facilitating the proper transmission of two-way messages, Figure 3c1 and Figure 3c2 A cross section of the first unit 10 cut along line 3c11 rotated 90° is shown.

[0092] Figure 3c1 Indicated in Figure 3c A cross section of the first unit 10 is shown in FIG. Figure 3c1 and Figure 2c1 The difference is that in Figure 3c1 The first cell wall 40, 40a shown in FIG. 4 has three separate layers 4111, 4112, 4113 with through holes 41 piercing through all the layers. Figure 3c1 and Figure 2c1 The difference is that there is no plate 30 with through holes 31. The polymer layer 42 is in direct contact with the through holes 41 and is placed directly at the inner surface 43 of the first unit housing wall 40. The polymer layer 42 is sandwiched between a set of different electronic components 11 with the wireless communication unit 14 and the inner surface 43 of the first unit housing wall 40.

[0093] Figure 3c2 According to Figure 3c FIG. 4 is a partial cross section of a deformation of a battery cell of a second embodiment of the component shown in FIG. Figure 3c2 and Figure 3c1 The difference is that the polymer layer 42 is in direct contact with the through hole 41 and is placed directly at the outer surface 44 of the first unit housing wall 40. A different set of electronic components 11 with the wireless communication unit 14 is present directly at the inner surface 43 of the first unit housing wall 40.

[0094] Refer to the following Figures 4a to 4c , Figure 4c1 and Figure 4c2 A third implementation form of a component of a battery cell for improving and enhancing or facilitating the correct transmission of bidirectional messages via RF signals of data or parameters or measurement signals is explained.

[0095] Figure 4a Shown is a front side view of a first cell 10 as presented in a third execution of components of a battery cell, the cell being adapted for wireless communication with a host battery management unit via two-way messaging of RF signals for data or parameter signals. Figure 4a and Figure 2a The difference is that the first unit housing wall 40 and the second housing wall 40a of the first unit 10 are multi-layered. Figure 4a and Figure 3aThe difference is that the first wall 40 includes components 30, 31 in addition to component 41, wherein the through hole 31 is pierced on the insulating plate 30 and the through hole 41 is pierced through all layers of the first housing wall 40. The through holes 31 and 41 are aligned to enable appropriate transmission of wireless bidirectional messages via RF signals of data or parameter signals. The plate 30 with the through hole 31 is attached to the outer surface 44 of the first unit housing wall 40. The through hole 31 is in direct contact with the polymer layer 32 ( Figures 4a to 4c , Figure 4c1 , Figure 4c2 ). The dotted lines indicate that the vias 31 and 41 are located behind the polymer layer 32 or 42 ( Figures 4a to 4c , Figure 4c1 , Figure 4c2 ).

[0096] Figure 4b Shown in Figure 4a An expanded view of the first unit 10 is shown in FIG. Figure 4b and Figure 2b The difference is that the first wall 40 and the second wall 40a of the first unit 10 are multi-layered and the through hole 41 on the first unit housing wall 40 passes through all layers 4111, 4112 and 4113 of the unit wall 40. The through hole 41 is also in direct contact with the polymer layer 42 ( Figure 4c1 and Figure 4c2 ). Polymer 42 Figures 4a to 4c Not shown.

[0097] Typically, layer 4112 comprises a metal, wherein the metal may be selected from the group consisting of aluminum and steel. Typically, layers 4111 and 4113 comprise a polymer, wherein the polymer may be selected from the group consisting of polypropylene, polyethylene terephthalate, or polytetrafluoroethylene.

[0098] The polymer layer 42 directly contacting the through hole 41 may be selected from the group consisting of polypropylene, polyethylene terephthalate or polytetrafluoroethylene, and attached at the inner surface 43 or outer surface 44 of the first housing wall 40 using an attaching member such as glue or a welding member.

[0099] The plate 30 may be attached to the outer surface 44 or the inner surface 43 of the first unit housing wall 40 of the first unit 10 using an attachment member such as glue or a welding member.

[0100] Figure 4cA third implementation of a component 31 on the plate 30 and a component 41 (through hole 41) pierced through all the layers of the first wall 40 for improving and promoting or facilitating the correct transmission of a bidirectional message via an RF signal of data or parameter or measurement signal from the first unit 10, the signal following the signal previously transmitted by the first host battery management unit 20. The signal transmitted by the first host battery management unit 20 is transmitted directly wirelessly or via a cable 4 ( Figure 1b ) is transmitted to the first unit 10, the coupler 28 is arranged to be connected to the first unit 10 or in particular Figure 1b Each antenna (not shown) of the communication unit (COM) of the second unit 10' shown in FIG.

[0101] Figure 4c and Figure 2c The difference is that the means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals are realized by means of directly piercing the cell housing with various holes 41, which are in direct contact with the polymer layer 42. The polymer layer 42 is impervious to liquids, hydrogen (O2) and moisture. The cell housing wall 40 comprises three layers, as shown in reference Figure 4a As explained.

[0102] Figure 4c and Figure 3c The difference is that the means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals is achieved by a combined means in which a plate 30 pierced with through holes 31 is present at the outer surface 44 of the first unit housing wall 40 and through holes 41 pierced through all layers of the unit wall 40. Both through holes 31 and 41 are aligned at the unit housing wall 40. Through holes 31 and 41 are in direct contact with polymer layers 32 and 42, respectively. Polymer layers 32 and 42 are impervious to liquids, hydrogen (O2) and moisture.

[0103] In a variation of the third implementation, the insulating walls 40 and 40 a may be single-layered.

[0104] Figure 4c The dotted line 4c11 in represents the line along which the section is cut to represent a cross section of the unit (unit 1) and in particular of the various components 31 and 41 combined in the partial wall for improving and promoting or facilitating the correct transmission of bidirectional messages.

[0105] exist Figure 4c1 and Figure 4c2 A cross section of unit 1 along line 4c11 is presented in FIG. Figure 4c shows a top view of a first unit wall 40 of a first unit 10 with components for improving and enhancing or facilitating the proper transmission of two-way messages, Figure 4c1 and Figure 4c2 A cross section of the first unit 10 cut along line 4c11 rotated 90° is shown.

[0106] Figure 4c1 Indicated in Figure 4c A cross section of the first unit 10 is shown in FIG. Figure 4c1 and Figure 2c1 The difference is that in Figure 4c1 The first unit wall 40 shown in FIG. 4 has three separate layers 4111, 4112, 4113 with through holes 41 piercing through all the layers. A polymer layer 42 is in direct contact with the through holes 41 and is placed directly at the inner surface 43 of the first unit housing wall 40. The polymer layer 42 is sandwiched between a set of different electronic components 11 with a wireless communication unit 14 and the inner surface 43 of the first unit housing wall 40. Figure 4c1 and Figure 3c1 The difference is that the plate 30 having the through hole 31 is placed at the outer surface 44 of the first cell wall 40. The polymer layer 32 is in direct contact with the through hole 31. In other words, the plate 30 is sandwiched between the polymer layer 32 and the outer surface 44 of the first cell housing wall 40.

[0107] Figure 4c2 According to Figure 4c FIG. 4 shows a deformed partial cross section of a battery cell of a third embodiment of the component. Figure 4c2 and Figure 4c1 The difference is that the board 30 with through holes 31 is placed at the inner wall 43 of the first housing wall 40. The polymer layer 32 in direct contact with the through holes 31 is sandwiched between the board 30 with through holes 31 and a group of different electronic components 11 with the wireless communication unit 14.

[0108] In a variation of the third execution form, the polymer layer 42 in direct contact with the through hole 41 may be attached to both the inner surface 43 and the outer surface 44 of the first unit housing 40 .

[0109] The polymer layer 42 is fixed at the inner surface 43 and / or the outer surface 44 of the first cell wall 40 using a fixing member such as glue or a welding member.

[0110] In a further variant of the third embodiment, there is no polymer layer 32 or polymer layer 42 .

[0111] The polymer layer 42 is fixed at the inner surface 43 and / or the outer surface 44 of the first cell wall 40 using a fixing member such as glue or a welding member.

[0112] The insulating plate 30 may include a polymer and may be selected from the group consisting of polypropylene, high-density polyethylene, or polytetrafluoroethylene.

[0113] The polymer layer 32 may be selected from the group consisting of polypropylene, polyethylene terephthalate, or polytetrafluoroethylene. The polymer layer 32 directly contacting the through hole 31 may be added to the board 30 using an attaching member such as glue or a welding member.

[0114] The through hole 31 according to the first and third embodiments of the component and the through hole 41 according to the second and third embodiments of the component typically have a diameter of 0.1 to 15 μm. The through hole 41 is preferably 0.2 to 12 μm in diameter and more preferably 0.5 to 10 μm in diameter. The size of the through hole 31 can be comparable to the through hole 41. The size of the through hole 31 can also be larger than the through hole 41, as in Figures 4a to 4c , Figure 4c1 and Figure 4c2 As described in .

[0115] Figures 2c to 4c The BMS1 slave is shown using dotted lines, which indicate that the BMS1 slave exists within the first cell 10, located on the cell wall 40. The BMS1 slave may also be outside the first cell 10.

[0116] Figure 5a It represents one of the components used to improve or enhance the good reception of radio frequency signals, which are generally derived from the communication unit of the host battery management system, as shown above. Figure 2c and Figure 4c As explained. These combined components are provided by means of a first plate 30', which comprises longitudinal apertures 31' arranged parallel to each other and preferably in this case evenly spaced apart from each other vertically. These combined components are provided with a second plate 30", which has longitudinal apertures 31". Arranged one above the other in parallel and preferably evenly spaced apart from each other horizontally. The first plate 30' can be mounted on the second plate 30" or vice versa to form a plate assembly. The combination of the vertical longitudinal opening 31' of the first plate 30' and the horizontal longitudinal opening 31" of the second plate 30" thus generates an opening giving access to each communication unit of each cell having these components to improve and boost the reception of radio frequency signals. Of course, it is possible to have direct access to the antenna of the wireless communication unit 14 of each battery cell. Under these conditions, a significant improvement in communication reception is obtained by these combined components. In this case, it is quite reasonable to add an insulating layer through the opening in the housing structure of the first unit.

[0117] Figure 5b Another embodiment of a component for improving or enhancing good reception of radio frequency signals, typically from a communication unit of a host battery management system, as described above with reference to Figure 2c and Figure 4cIn this embodiment, the following can be provided: Figure 3a A direct combination of the first and second plates shown in , or designing a plate with square or substantially rectangular shaped apertures made through the plate and generating or making spaces between each aperture at a determined depth of the plate 30, for example by machining a laser beam or other machining techniques.

[0118] exist Figure 5c In the third embodiment shown in FIG. 1 , only one plate 30 is recommended with a single opening 31 completely passing through the plate, so that at least one antenna of the wireless communication unit 14 of each unit 10 or 10 'can be placed on it without any protection. However, in the case of a single opening 31, it is also possible to recommend installing a protective plate on the communication unit 14 of each unit 10, 10 '. This protective plate should be made of a material that does not interfere with radio frequency signals.

[0119] Of course, for these three alternative embodiments of the combined means for improving or enhancing the transmission of radio frequency signals, there is also provision for establishing near field communication via a cable 4 connected to at least one communication unit 24 of the host battery management unit 20, as described above with reference to Figure 1a or Figure 1b As explained.

[0120] In the preceding description, different embodiments of the combined means for enhancing or boosting the reception of radio frequency signals, typically from a host battery management unit, may be provided within the scope of the described independent claims.

Claims

1. A battery unit (10, 10') comprising in a housing structure at least one slave unit management unit (slave BMS) and at least one communication unit (14), the at least one communication unit (14) being used to wirelessly communicate bidirectional messages with a communication unit (24) of a host battery management system (20) via data or parameters or measurement signals, characterized in that The unit comprises components for enhancing or promoting good bidirectional transmission of radio frequency signals, the components being incorporated in part of a wall of the unit housing structure and / or forming part of an external or internal configuration panel disposed on a wall facing the unit communication unit (14).

2. A battery unit (10, 10') according to claim 1, arranged to communicate with the battery via an electrical cable (4), the electrical cable (4) being arranged in the battery near each wireless communication unit (14) of one or more units (10, 10'), characterized in that The communication can be realized by wireless transmission of data or parameters or measurement signals (5) via a cable (4), which is connected on one side to the communication unit (24) of the master battery management system (20) and the redundant master battery management system (20') and to the communication unit (14) of each unit (10, 10').

3. The battery unit (10, 10') according to claim 1, characterized in that: Means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals are realized by using various through holes (41) on the housing structure, the various through holes (41) being in direct contact with a polymer layer (42) which is impervious to water or moisture or hydrogen peroxide (O2) but allows electromagnetic waves to pass through, and the various holes (31) are arranged to give access to the communication antenna of the communication unit (14) of each unit (10, 10').

4. The battery unit (10, 10') according to claim 1, characterized in that: A means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals is realized by means of a plate (30) pierced with various through holes (31), the various through holes (31) being in direct contact with a polymer layer (32), wherein the polymer layer (32) is impervious to water or moisture or hydrogen peroxide (O2) but allows electromagnetic waves to pass, and the various holes (31) are arranged to give access to the communication antenna of the communication unit (14) of each unit (10, 10').

5. The battery unit (10, 10') according to claim 3 or claim 4, characterized in that: The various through holes (31, 41) are in direct contact with the polymer layer (32, 42), which is not penetrated by water or moisture or hydrogen (O2) but allows electromagnetic waves to pass through. The various through holes (31, 41) are of the same or variable size so as to give access to the communication antenna of the communication unit (14) of each unit (10, 10').

6. The battery unit (10, 10') according to claim 1, characterized in that: Components for improving and promoting good wireless reception and transmission of data or parameters or measurement signals are realized by means of a first plate (30') comprising longitudinal apertures (31') arranged parallel to each other and preferably regularly spaced apart from each other in the vertical direction, and a second plate (30')' provided for these combined components, having longitudinal apertures (31") arranged parallel to each other and preferably regularly spaced apart from each other in the horizontal direction.

7. The battery unit (10, 10') according to claim 6, characterized in that: The second plate is fixedly mounted to the first plate.

8. The battery unit (10, 10') according to claim 1, characterized in that: Means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals are realized by means of a plate (30) with a single opening (31) giving direct access to the communication antenna of the communication unit (14) of each unit.

9. A battery comprising at least one battery cell (10, 10'), the cell comprising in a housing structure at least one slave cell management unit (slave BMS) and at least one communication unit (14), the at least one communication unit (14) being used for wireless communication of data or parameters or measurement signals with a communication unit (24) of a host battery management system (20), characterized in that The unit includes a combination of components for enhancing or promoting good reception of radio frequency signals with a host battery management system (20), the combined components being in part of a wall of the unit housing structure or forming part of an external configuration panel disposed on a wall facing the unit communication unit (14).

10. The battery according to claim 9, characterized in that A means for improving and promoting good wireless reception and transmission of data or parameters or measurement signals is achieved by using various through holes (41) on the unit housing structure and / or by means of a plate (30) pierced with various through holes (31), the various through holes (41) being in direct contact with a polymer layer (42) which is not penetrated by water or moisture or hydrogen peroxide (O2), and the various holes (31) being arranged to give access to the communication antenna of the communication unit (14) of each of the units (10, 10').

11. The battery according to claim 10, characterized in that The various through holes (31) are of equal or variable size to give access to the communication antenna of the communication unit (14) of each unit (10, 10').

12. The battery according to claim 9, characterized in that It comprises at least one cable (4) which is connected on one side to a communication unit (24) of a host battery management system (20) and to a communication unit (14) of each unit (10, 10') to establish communication by wireless transmission of data or parameters or measurement signals (5) with the communication unit (14) of each unit (10, 10').

13. The battery according to claim 12, characterized in that It comprises an RF coupler (28) arranged along a cable (4) close to each cell (10, 10') of the battery, each of the RF couplers (28) being connected to a metal wire (27) through an open loop portion of the cable (4).

14. The battery according to claim 9, characterized in that Components for improving and promoting good wireless reception and transmission of data signals or parameters or measurements are realized by means of a first plate (30') comprising longitudinal apertures (31') arranged parallel to each other and preferably regularly spaced apart from each other vertically, and a second plate (30") provided for these combined components, having longitudinal apertures (31") arranged parallel to each other and preferably regularly spaced apart from each other horizontally.

15. The battery according to claim 14, characterized in that The second plate is fixedly mounted to the first plate.

16. The battery according to claim 9, characterized in that Means for improving and promoting good wireless reception and transmission of data signals or parameters or measurements are realized by means of a plate (30) having a single opening (31) giving direct access to the communication antenna of the communication unit (14) of each unit (10, 10').

17. The battery according to claim 9, characterized in that When the first host battery management unit (20) is active, the second host battery management system (20') is connected via a cable (4) in an inactive state, and both host battery management systems (20, 20') are adapted to each receive wirelessly transmitted data or parameters or measurement signals from each cell (10, 10') of the battery via a communication unit (24).

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