Battery module, module assembly and associated mounting method

Abstract

Battery module, set of modules and associated mounting method The module (16) comprises: - a housing (20); - a first connector (50) connecting a first terminal to a first additional module (16B) and comprising a first connection element; - a second connector (56) connected to a second terminal and comprising a second connection element; - a third connector (62) connected to a second additional module (16C) and comprising a third connection element; - a connection device (70); the second and third connection elements being in contact by the connection device (70) so that the second terminal is connected to the second additional module (16C). The connection device (70) comprising an insulating part removably mounted on the housing (20) and configured to electrically insulate the first connection element from the second and third connection elements. Figure for abstract: Figure 1

Description

Title of the invention: Battery module, set of modules and associated mounting method

[0001] The present invention relates to a battery module comprising:

[0002] - a housing delimiting an interior volume;

[0003] - at least one electrochemical battery element arranged in the interior volume of the case;

[0004] - a first electrical terminal of a first polarity, mounted on the housing and connected to at least one electrochemical element;

[0005] - a second electrical terminal of a second polarity opposite to the first polarity, mounted on the housing and connected to the at least one electrochemical element;

[0006] - a first electrical connector for connecting the first terminal to a first additional battery module, the first electrical connector comprising a first connection element intended to be in electrical contact with the first terminal;

[0007] - a second electrical connector intended to be connected to the second terminal, the second electrical connector comprising a second connection element intended to extend opposite the first connection element;

[0008] - a third electrical connector intended to be connected to a second module of additional battery, the third electrical connector comprising a third connection element intended to be in electrical contact with the second connection element;

[0009] - an electrical connection device;

[0010] the second connection element and the third connection element being intended to be in electrical contact via the electrical connection device so that the second terminal is connected to the second additional battery module via the second and third electrical connectors.

[0011] Such a battery module is intended to be connected in series or in parallel with other battery modules by electrical connection devices, in particular connection terminals.

[0012] It is known from the state of the art to implement connection terminals at a distance from the electrical terminals of the battery module in order to bring the two opposite polarities to the same location.

[0013] However, these connection terminals are often bulky and the fact of moving them away from the housing further increases the size of the module. battery. It is therefore necessary to develop terminal blocks that are as close as possible to the electrical terminals of the module and that are as compact as possible.

[0014] However, reducing the distances between the conductive elements of the terminal blocks and each other, as well as between the conductive elements of the terminal blocks and the electrical terminals, increases the risk of short circuits.

[0015] An aim of the invention is then to propose a battery module allowing a connection with other battery modules which is easy and secure, while reducing the size and while avoiding complicating the battery module and increasing its mass.

[0016] For this purpose, the invention relates to a battery module as described above and in which the electrical connection device is capable of being removably mounted on the housing, the electrical connection device comprising an insulating part intended to be removably mounted on the housing and configured to electrically insulate the first connection element from the second and third connection elements.

[0017] Thanks to the invention, the electrical connection device is able to be mounted directly on the housing near the first and second connection elements, which considerably reduces the size of the module. In addition, the first connection element is isolated from the second and third connection elements, which considerably reduces the risk of short circuit between these elements.

[0018] According to other advantageous aspects of the invention, the battery module comprises one or more of the following characteristics, taken individually or in all technically possible combinations:

[0019] - each electrical connector is a flat connector or a connecting cable electrical, the corresponding connection element being a terminal when the corresponding electrical connector is a flat connector, the corresponding connection element being a terminal when the corresponding electrical connector is an electrical connection cable;

[0020] - the first electrical connector is removable relative to the first terminal and / or the second electrical connector is removable from the second terminal and / or the third electrical connector is removable from the second connector;

[0021] - the insulation part comprises at least one main insulation wall intended to be arranged between on the one hand the first connection element and on the other hand the second connection element and the third connection element;

[0022] - the housing comprises a connecting wall delimiting at least in part the volume interior, the first connection element and the second connection element being intended to extend opposite the connection wall of the housing, the main insulating wall being intended to extend opposite the connection wall;

[0023] - the isolation room comprises at least two auxiliary isolation walls extending substantially perpendicular to the at least one main insulating wall, the at least one main insulating wall, the at least two auxiliary insulating walls and the connection wall of the housing being intended to delimit an insulating volume in which the first connection element is intended to extend;

[0024] - the connecting wall of the housing comprises two opposite edges extending sen possibly in a plane, the connecting wall of the housing further comprising a recess extending between the two opposite edges and oriented towards the interior volume, the main insulating wall extending substantially along the plane, the recess at least partly composing the insulating volume;

[0025] - at least one main insulating wall and at least two auxiliary walls isolation delimit a space for receiving the second connection element and the third connection element, the isolation volume and the receiving space extending respectively on either side of the main isolation wall;

[0026] - the electrical connection device further comprises a mechanism of electrical connection mounted on the insulating part, the second connection element and the third connection element being intended to be kept in electrical contact with each other by the electrical connection mechanism;

[0027] - the insulation part is overmolded on at least part of the mechanism of electrical connection;

[0028] - the insulation part is made of moldable thermoplastic material, by example in acrylonitrile butadiene styrene;

[0029] - the electrical connection device further comprises a protective part capable of being removably mounted on the insulation part and configured to at least partially cover the second connection element and the third connection element so as to restrict access to the second and third connection elements,

[0030] the protective part and the insulating part being intended to delimit a protective volume in which the second connection element and the third connection element extend;

[0031] - the protective part comprises a main protective wall extending in facing the second connection element and the third connection element and two auxiliary protection walls extending from the main protection wall towards the housing in a direction of extension, the protection volume being intended to be delimited by the main protection wall, the two auxiliary protection walls and the insulation part;

[0032] - the protective volume is intended to be delimited by the main wall of protection, the two auxiliary protection walls, the main isolation wall and the two auxiliary isolation walls;

[0033] - each auxiliary protective wall comprises at least one pre-cutout extending between at least two portions of auxiliary protective wall substantially perpendicular to the direction of extension, said auxiliary protective wall being capable of being cut according to the at least one pre-cut so as to adapt a dimension of said auxiliary protective wall taken according to the direction of extension;

[0034] - the protective part is made of moldable thermoplastic material, by example in acrylonitrile butadiene styrene;

[0035] - the insulation part is elastically deformable so that the insulation part be clippable onto the housing, the protective part being elastically deformable so that the protective part is clippable onto the insulating part, the clipping of the protective part onto the insulating part constraining the insulating part so that the unclipping of the insulating part from the housing is prevented when the protective part is mounted on the insulating part; and

[0036] - the housing comprises at least one first clipping element;

[0037] - the insulation part comprises at least one second clipping element and at least one at least one third clipping element arranged on at least one clipping wall of the insulation part;

[0038] - the protective part comprises at least a fourth clipping element;

[0039] the at least one first clipping element of the housing and the at least one second clipping element of the insulating part cooperating when the insulating part is clipped onto the housing, the cooperation of the at least one first clipping element and the at least one second clipping element generating a first clipping moment in a first moment direction on the corresponding clipping wall,

[0040] the at least one third clipping element of the insulation part and the at least one fourth clipping element of the protection part cooperating when the protection part is clipped onto the insulation part, the cooperation of the at least one third clipping element and the at least one fourth clipping element generating a second clipping moment in a second moment direction on the corresponding clipping wall,

[0041] the first direction of moment and the second direction of moment being opposite.

[0042] The invention also relates to a set of battery modules, comprising a main battery module as described above, a first additional battery module and a second additional battery module.

[0043] The invention further relates to a method of mounting a battery module assembly as described above, comprising:

[0044] - a connection of the first terminal with the first additional battery module through the first electrical connector;

[0045] - a mounting of the insulating part of the electrical connection device on the case;

[0046] - a connection of the second terminal with the second battery module ad additionally via the second electrical connector, the electrical connection device and the third electrical connector;

[0047] the mounting of the insulating part being such that the insulating part of the electrical connection device electrically insulates the first connection element from the second and third connection elements.

[0048] The invention will appear more clearly on reading the description which follows, given solely by way of non-limiting example, and made with reference to the drawings in which:

[0049] [Fig-1] [Fig.l] is a perspective view of a set of battery modules according to the invention, wherein the electrical connection device is mounted on the housing;

[0050] [Fig.2] [Fig.2] is a sectional view of the battery module assembly of [Fig.l], along section plane II;

[0051] [Fig.3] [Fig.3] is an enlarged view of portion III of [Fig.2];

[0052] [Fig.4] [Fig.4] is an enlarged view of portion IV of [Fig.l];

[0053] [Fig.5] [Fig.5] is a view of a portion of the battery module assembly of [Fig.l], in which certain parts are illustrated in exploded view; and

[0054] [Fig.6] [Fig.6] is a schematic representation of the assembly method according to the invention.

[0055] With reference to [Fig.l], a set 10 of battery modules 16 according to the invention is described.

[0056] The assembly 10 comprises a main battery module 16A, a first additional battery module 16B and a second additional battery module 16C.

[0057] As illustrated in the example of [Fig.l], the assembly 10 comprises a third additional battery module 16D.

[0058] For example, the main battery module 16A and the first additional battery module 16B are part of a first group 12A of battery modules, in particular a first column of battery modules.

[0059] For example, the second additional battery module 16C and where appropriate the third additional battery module 16D are part of a second group 12B of battery modules, in particular of a second column of battery modules.

[0060] In the following, the expression "battery module" refers to the main battery module 16A.

[0061] With reference to Figures 1 and 2, the battery module 16 comprises a housing 20, at at least one electrochemical element 21, a first electrical terminal 40, a second electrical terminal 42, a first electrical connector 50, a second electrical connector 56, a third electrical connector 62 and an electrical connection device 70.

[0062] The housing 20 delimits the interior volume 22.

[0063] In particular, the housing 20 extends in a longitudinal direction X between a first longitudinal wall 24A and a second longitudinal wall 24B, in a transverse direction Y between a first transverse wall 26A and a second transverse wall 26B and in a vertical direction Z between a first vertical wall 28A and a second vertical wall 28B. The interior volume 22 is in particular delimited between the two longitudinal walls 24A, 24B, between the two transverse walls 26A, 26B and between the two vertical walls 28A, 28B.

[0064] The housing 20 comprises in particular a connection wall 30 delimiting at least in part the interior volume 22. In particular, the connection wall 30 is a wall carrying the first electrical terminal 40 and / or the second electrical terminal 42. Furthermore, the connection wall 30 is the wall on which the electrical connection device 70 is intended to be mounted. According to the example of the figures, the connection wall 30 is a wall carrying the first electrical terminal. In particular, the connection wall 30 is the first longitudinal wall 24A.

[0065] With reference to [Fig. 3], the connecting wall 30 of the housing 20 comprises in particular two opposite edges 32 extending substantially in a plane. In this example, the connecting wall 30 is attached by snap-fastening between the walls 26A, 26B, 28A and 28B.

[0066] Advantageously, the connection wall 30 of the housing 20 further comprises a recess 34 extending between the two opposite edges and oriented towards the interior volume 22. The recess 34 at least partly forms an isolation volume 82 which will be described later.

[0067] Advantageously, with reference to [Fig. 5], the housing 20, in particular the connection wall 30, further comprises at least one first clipping element 36. As visible in the example of [Fig. 5], the housing 20 comprises a plurality of first clipping elements 36.

[0068] The at least one first clipping element 36 is intended to cooperate with at least one second clipping element 87 of the insulating part 76. In particular, as will be detailed below, the at least one first clipping element 36 and the at least one second clipping element 87 cooperate when the insulating part 76 of the electrical connection device 70 is clipped onto the housing 20.

[0069] According to the example of the figures, the at least one first clipping element 36 is a clipping orifice.

[0070] The at least one electrochemical battery element 21 is arranged in the interior volume 22 of the housing 20 and is connected to the first electrical terminal 40 and to the second electrical terminal 42. The at least one electrochemical element 21 is intended to store electrical energy or to generate electrical power at the electrical terminals 40, 42.

[0071] The first electrical terminal 40 is of a first polarity.

[0072] The first electrical terminal 40 is mounted on the housing 20. For example, the first Electrical terminal 40 is mounted on the connection wall 30. For example, the first electrical terminal 40 extends into the recess 34 of the connection wall 30. According to the example illustrated in the figures, the first electrical terminal 40 is mounted on the first longitudinal wall 24A.

[0073] The second electrical terminal 42 is of a second polarity opposite to the first polarity.

[0074] The second electrical terminal 42 is mounted on the housing 20. According to the example illustrated in the figures, the second electrical terminal 42 is mounted on the second longitudinal wall 24B.

[0075] As illustrated in Figures 1 and 2, the first electrical connector 50 is intended to connect the first electrical terminal 40 to the first additional battery module 16B.

[0076] With reference to [Fig. 3], the first electrical connector 50 comprises a first connection element 52 intended to be in electrical contact with the first electrical terminal 40.

[0077] For example, with reference to [Fig.2], the first electrical connector 50 comprises a first auxiliary connection element 53 connected to the first connection element 52 and intended to be connected to the first additional battery module 16B.

[0078] As illustrated in the example of [Fig.2], the first electrical connector 50 extends along a transverse wall, for example along the first transverse wall 26A.

[0079] The first electrical connector 50 is for example removable relative to the first terminal 40. In particular, the first electrical connector 50 is arranged between a connected configuration in which the first electrical connector 50 is connected to the first terminal 40 and a disconnected configuration in which the first electrical connector 50 is disconnected from the first terminal 40.

[0080] Advantageously, the first electrical connector 50 is a flat connector or an electrical connection cable. According to the example of the figures, the first electrical connector 50 is a flat connector. The flat connector is, for example, a multi-blade connector, such as for example an nVent ERIFLEX Flexibar Advanced™ multi-blade connector, or an electrical connection braid.

[0081] Also advantageously, the first connection element 52 is a terminal or a lug. According to the example of the figures, the first connection element 52 is a terminal.

[0082] For example, the first connection element 52 is intended to extend opposite the connection wall 30 of the housing 20, in particular when the first electrical connector 50 is in the connected configuration.

[0083] According to the example of the figures, and in particular with reference to [Fig.3], the first connection element 52 is intended to be arranged between the housing 20, in particular the connection wall 30 of the housing 20, and a second connection element 58 of the second electrical connector 56.

[0084] With reference to Figures 2 and 3, the second electrical connector 56 is intended to be connected to the second electrical terminal 42.

[0085] With reference to [Fig.3], the second electrical connector 56 comprises the second connection element 58.

[0086] For example, with reference to [Fig.2], the second electrical connector 56 further comprises a second auxiliary connection element 59 connected to the second connection element 58 and intended to be connected to the second terminal 42.

[0087] As illustrated in the example of [Fig.2], the second electrical connector 56 extends along a transverse wall, for example along the second transverse wall 26B. In a non-illustrated variant, the second electrical connector 56 extends along a vertical wall, in particular along the second vertical wall 28B.

[0088] The second electrical connector 56 is for example removable relative to the second terminal 42. In particular, the second electrical connector 56 is arranged between a connected configuration in which the second electrical connector 56 is connected to the second terminal 42 and a disconnected configuration in which the second electrical connector 56 is disconnected from the second terminal 42.

[0089] Advantageously, the second electrical connector 56 is a flat connector or an electrical connection cable. According to the example of the figures, the second electrical connector 56 is a flat connector. The flat connector is, for example, a multi-blade connector, such as for example an nVent ERIFLEX Flexibar Advanced™ multi-blade connector, or an electrical connection braid.

[0090] Also advantageously, the second connection element 58 is a terminal or a lug. According to the example of the figures, the second connection element 58 is a terminal.

[0091] The second connection element 58 is intended to extend opposite the first connection element 52, in particular when the second electrical connector 56 is in the connected configuration.

[0092] The second connection element 58 and a third connection element 64 of the third electrical connector 62 are intended to be held in electrical contact with each other by the electrical connection device 70 so that the second electrical terminal 42 is connected to the second additional battery module 16C via the second and third electrical connectors 56, 62.

[0093] The second connection element 58 is, for example, intended to extend opposite the connection wall 30 of the housing 20, in particular when the second electrical connector 56 is in the connected configuration.

[0094] With reference to [Fig. 1], the third electrical connector 62 is intended to be connected to the second additional battery module 16C. In particular, the third electrical connector 62 extends between the modules 16A and 16C.

[0095] With reference to [Fig. 3], the third electrical connector 62 comprises the third connection element 64 intended to be in electrical contact with the second connection element 58.

[0096] For example, with reference to [Fig. 1], the third electrical connector 62 further comprises a third auxiliary connection element 65 connected to the third connection element 64 and intended to be connected to the second additional battery module 16C.

[0097] Advantageously, the third electrical connector 62 is a flat connector or an electrical connection cable. According to the example of the figures, the second electrical connector 62 is an electrical connection cable. The flat connector is, for example, a multi-blade connector, such as for example an nVent ERIFLEX Flexibar Advanced™ multi-blade connector, or an electrical connection braid.

[0098] The third electrical connector 62 is for example removable relative to the second electrical connector 56. In particular, the third electrical connector 62 is arranged between a connected configuration in which the third electrical connector 62 is connected to the second connector 56 and a disconnected configuration in which the third electrical connector 62 is disconnected from the second connector 56.

[0099] Also advantageously, the third connection element 64 is a terminal or a lug. According to the example of the figures, the third connection element 64 is a lug.

[0100] The third connection element 64 is intended to extend opposite the first connection element 56 and the second connection element 58, in particular when the third electrical connector 62 is in the connected configuration.

[0101] The electrical connection device 70 is capable of being removably mounted on the housing 20.

[0102] With reference to Figures 3 to 5, the electrical connection device 70 comprises an insulating part 76.

[0103] Advantageously, the electrical connection device 70 further comprises an electrical connection mechanism 90 and a protective part 100.

[0104] The insulating part 76 is intended to be removably mounted on the housing 20 and configured to electrically insulate the first connection element 52 from the second and third connection elements 58, 64.

[0105] In particular, the insulation part 76 is made of moldable thermoplastic material, for example acrylonitrile butadiene styrene (ABS), preferably ABS conforming to the flammability safety standard UL 94 V0, preferably with good temperature resistance.

[0106] The electrical resistivity of the insulation part 76 is for example greater than or equal to 3 x 1015 ohm.cm, in particular substantially equal to 3 x 1016 ohm.cm.

[0107] According to a particular example, the insulating part 76 carries the electrical connection mechanism 90. In particular, the insulating part 76 is overmolded onto at least a portion of the electrical connection mechanism 90, in particular onto a base 91 of the electrical connection mechanism 90.

[0108] The insulating part 76 comprises for example at least one main insulating wall 78 intended to be arranged between on the one hand the first connection element 52 and on the other hand the second connection element 56 and the third connection element 64, in particular when the first connector 50, the second connector 56 and the third connector 62 are in the connected configuration.

[0109] Advantageously, the main insulating wall 78 is intended to extend opposite the connection wall 30, in particular when the insulating part 76 is mounted on the housing 20.

[0110] For example, the insulation part 76 further comprises at least two auxiliary insulation walls 80 extending substantially perpendicular to the at least one main insulation wall 78.

[0111] The at least one main isolation wall 78, the at least two auxiliary isolation walls 80 and the connection wall 30 of the housing 20 are intended to delimit an isolation volume 82 in which the first connection element 52 is intended to extend.

[0112] For example, as visible in the example of figures 2 and 3, the main isolation wall 78 extends substantially along the extension plane of the two edges 32 of the connection wall 30 so that the recess 34 at least partially composes the isolation volume 82. The main isolation wall 78 extends here in a plane perpendicular to the longitudinal direction X.

[0113] As visible in the example of figures 2 and 3, the main insulating wall 78 and the at least two auxiliary insulating walls 80 delimit a space 84 for receiving the second connection element 58 and the third connection element. 64.

[0114] With reference to [Fig. 3], the receiving space 84 and the isolation volume 82 extend respectively on either side of the main isolation wall 78. The isolation volume 82 is directed towards the connection wall 30 opposite the receiving space 84.

[0115] With reference to Figures 4 and 5, the insulation part 76 is elastically deformable so that the insulation part 76 can be clipped onto the housing 20.

[0116] In particular, with reference to Figures 3 and 5, the insulation part 76 comprises at least one clipping wall 86 as well as at least one second clipping element 87 and at least one third clipping element 88 arranged on the at least one clipping wall 86. For example, the at least one clipping wall 86 is an auxiliary insulation wall 80. According to the examples of the figures, the insulation part 76 comprises two clipping walls 86.

[0117] The at least one second clipping element 87 is intended to cooperate with the at least one first clipping element 36 to mount the insulation part 76 on the housing 20.

[0118] The at least one third clipping element 88 is intended to cooperate with at least one fourth clipping element 114 of the protective part 100.

[0119] According to the example illustrated in [Fig.5], the at least one second clipping element 87 comprises a clipping tab intended to extend into and cooperate with the clipping orifice of the at least one first clipping element 36.

[0120] According to the example illustrated in [Fig.5], the at least one third clipping element 88 is a clipping orifice.

[0121] With reference to [Fig.3], the electrical connection mechanism 90 is mounted on the insulation part 76.

[0122] The electrical connection mechanism 90 is intended to maintain the second and third connection elements 58, 64 in electrical contact with each other.

[0123] Advantageously, the electrical connection mechanism 90 comprises the base 91 and a fixing part 96.

[0124] Still advantageously, the base 91 is mounted on the insulation part 76, in particular on the main insulation wall 78, in particular opposite the insulation volume 82. The base 91 has in particular a fixing orifice 92.

[0125] Still advantageously, the fixing part 96 is intended to cooperate with the second and third connection elements 58, 64 and with the base 91, in particular with the fixing orifice 92 to hold the second and third connection elements 58, 64. In particular, the fixing part 96 is a screw comprising a rod 97 and a head 98. The rod 97 is intended to extend successively into an orifice of the connection element 64, into an orifice of the connection element 58 and in the fixing hole 92 of the base 91, so that the connecting elements 58, 64 are pressed against each other between the head 98 and the base 91.

[0126] The electrical connection mechanism 90 is for example made of conductive material, in particular of metallic material.

[0127] Alternatively, the electrical connection mechanism 90 is made of insulating material, in particular wood.

[0128] With reference to Figures 3, 4 and 5, the protective part 100 is capable of being removably mounted on the insulating part 76 and is configured to at least partially cover the second connection element 58 and the third connection element 64 so as to restrict access to the second and third connection elements 58, 64, in particular to an operator handling the battery module 16. Thanks to the protective part 100, the device 70 complies with the IP2x standard (IEC 60529 standard). The electrical connection device 70 allows manipulations by an operator (such as for example voltage measurements), while ensuring a certain level of safety with regard to the intrusion of solid bodies. In particular, according to a particular example not illustrated, the protective part 100 has an orifice for the passage of a voltage measurement probe.In particular, the passage orifice is a circular orifice having a diameter less than 12 mm, preferably a diameter substantially equal to 4 mm, which allows compliance with the IP2x standard.

[0129] The protective part 100 and the insulating part 76 are in particular intended to delimit a protective volume 102 in which the second connection element 58 and the third connection element 64 extend.

[0130] In particular, the protective part 100 is made of plastic filled with a moldable thermoplastic material, for example ABS, preferably ABS conforming to the UL 94 V0 flammability safety standard, preferably with good temperature resistance.

[0131] Advantageously, the protective part 100 comprises a main protective wall 104 intended to extend opposite the second connection element 58 and the third connection element 64 and two auxiliary protective walls 106 extending from the main protective wall 104 towards the housing in an extension direction D.

[0132] The protective volume 102 is in particular intended to be delimited by the main protective wall 104, the two auxiliary protective walls 106 and the insulation part 76, in particular the main insulation wall 78 and the two auxiliary insulation walls 80.

[0133] With reference to figures 3, 4 and 5, each auxiliary protective wall 106 comprises at least one pre-cut 110 extending between at least two portions 107 of auxiliary protective wall 106 substantially perpendicular to the direction of extension D. Each auxiliary protective wall 106 is capable of being cut according to the at least one pre-cut 110 so as to adapt a dimension of said auxiliary protective wall 106 taken according to the direction of extension D.

[0134] With reference to [Fig.5], the protective part 100 is elastically deformable so that the protective part 100 can be clipped onto the insulating part 76. Clipping the protective part onto the insulating part 76 constrains the insulating part 76 so that unclipping of the insulating part 76 from the housing 20 is prevented when the protective part 100 is mounted on the insulating part 76.

[0135] Advantageously, the protective part 100 comprises at least one fourth clipping element 114.

[0136] The at least one fourth clipping element 114 is intended to cooperate with the at least one third clipping element 88 of the insulation part 76 to mount the protection part 100 on the insulation part 76.

[0137] According to the example illustrated in [Fig.5], the at least one fourth clipping element 114 comprises a clipping tab intended to extend into and cooperate with the clipping orifice of the at least one third clipping element 88.

[0138] With reference to [Fig.4], the cooperation of the at least one first clipping element 36 and the at least one second clipping element 87 generates a first clipping moment M1 in a first moment direction SMI on the clipping wall 86.

[0139] The cooperation of the at least one third clipping element 88 and the at least one fourth clipping element 114 generating a second clipping moment M2 in a second moment direction SM2 on the clipping wall 86.

[0140] The first moment direction SMI and the second moment direction SM2 are opposite. Thanks to this characteristic, the unclipping of the insulating part 76 with respect to the housing 20 is prevented when the protective part 100 is mounted on the insulating part 76.

[0141] With reference to [Fig.6], a mounting method 200 according to the invention is described.

[0142] The mounting method 200 comprises a step 210 of connecting the first terminal 40 with the first additional battery module 16B via the first electrical connector 50.

[0143] The mounting method 200 further comprises a step 220 of mounting the insulating part 76 of the electrical connection device 70 on the housing 20.

[0144] The mounting of the insulating part 76 is such that the insulating part 76 of the electrical connection device 70 electrically insulates the first connection element 52 from the second and third connection elements 58, 64.

[0145] In particular, the insulating part 76 is clipped onto the housing 20. In particular, the at least one second clipping element 87 of the insulating part cooperates with the at least one first clipping element 36 of the housing 20.

[0146] The mounting method 200 further comprises a step 230 of connecting the second terminal 42 with the second additional battery module 16C via the second electrical connector 56, the electrical connection device 70 and the third electrical connector 62.

[0147] Advantageously, the mounting method 200 further comprises a step of mounting the protective part 100 on the insulating part 76. In particular, the protective part is clipped onto the insulating part 76. In particular, the at least one fourth clipping element 114 of the protective part 100 cooperates with the at least one third clipping element 88 of the insulating part 76.

[0148] Thanks to the insulating piece 76, a possible short circuit between the first connection element 52 and the second and third connection elements 58, 64 is avoided. In addition, the protective piece 100 forms an insurmountable barrier for the operator, which prevents him from being inadvertently too close to the second and third connection elements 58, 64. This improves the safety of the battery module 16. The mounting of the electrical connection device 70 is simple since it is sufficient to clip the insulating piece 76 onto the housing 20 and then to clip the protective piece 100 onto the insulating piece 76. The clipping moments M1, M2 generated make it possible to reduce the risk of unexpected detachment of the insulating piece 76 from the housing.

Claims

1. Claims Battery module (16) comprising: - a housing (20) delimiting an interior volume (22); - at least one electrochemical battery element (21) arranged in the interior volume (22) of the housing (20); - a first electrical terminal (40) of a first polarity, mounted on the housing (20) and connected to the at least one electrochemical element (21); - a second electrical terminal (42) of a second polarity opposite to the first polarity, mounted on the housing (20) and connected to the at least one electrochemical element (21); - a first electrical connector (50) intended to connect the first terminal (40) to a first additional battery module (16B), the first electrical connector (50) comprising a first connection element (52) intended to be in electrical contact with the first terminal (40); - a second electrical connector (56) intended to be connected to the second terminal (42), the second electrical connector (56) comprising a second connection element (58) intended to extend opposite the first connection element (52); - a third electrical connector (62) intended to be connected to a second additional battery module (16C), the third electrical connector (62) comprising a third connection element (64) intended to be in electrical contact with the second connection element (58); - an electrical connection device (70); the second connection element (58) and the third connection element (64) being intended to be in electrical contact via the electrical connection device (70) so that the second terminal (42) is connected to the second additional battery module (16C) via the second and third electrical connectors (56, 62), characterized in that the electrical connection device (70) is capable of being removably mounted on the housing (20), the electrical connection device (70) comprising an insulating part (76) intended to be removably mounted on the housing (20) and configured to electrically insulate the first connection element (52) of the second and third connecting elements (58, 64).

2. The battery module (16) of claim 1, wherein each electrical connector (50, 56, 62) is a flat connector or an electrical connection cable, the corresponding connection element (52, 58, 64) being a terminal when the corresponding electrical connector (50, 56, 62) is a flat connector, the corresponding connection element (52, 58, 64) being a terminal when the corresponding electrical connector (50, 56, 62) is an electrical connection cable.

3. A battery module (16) according to claim 1 or 2, wherein the first electrical connector (50) is removable from the first terminal (40) and / or the second electrical connector (56) is removable from the second terminal (42) and / or the third electrical connector (62) is removable from the second connector (56).

4. Battery module (16) according to any one of the preceding claims, wherein the insulating part (76) comprises at least one main insulating wall (78) intended to be arranged between on the one hand the first connection element (52) and on the other hand the second connection element (58) and the third connection element (64).

5. Battery module (16) according to claim 4, wherein the housing (20) comprises a connection wall (30) at least partially delimiting the interior volume (22), the first connection element (52) and the second connection element (58) being intended to extend opposite the connection wall (30) of the housing (20), the main insulating wall (78) being intended to extend opposite the connection wall (30).

6. Battery module (16) according to claim 5, wherein the insulation part (76) comprises at least two auxiliary insulation walls (80) extending substantially perpendicular to the at least one main insulation wall (78), the at least one main insulation wall (78), the at least two auxiliary insulation walls (80) and the connection wall (30) of the housing (20) being intended to delimit an insulation volume (82) in which the first connection element (52) is intended to extend.

7. Battery module (16) according to claim 6, wherein the connecting wall (30) of the housing (20) comprises two opposite edges (32) extending substantially in a plane, the connecting wall (30) of the housing (20) further comprising a recess (34) extending between the two opposite edges (32) and oriented towards the interior volume (22), the main insulating wall (78) extending substantially along the plane, the recess (34) at least partly constituting the insulating volume (82).

8. Battery module (16) according to claim 6 or 7, wherein the at least one main insulating wall (78) and the at least two auxiliary insulating walls (80) delimit a receiving space (84) for the second connection element (58) and the third connection element (64), the insulating volume (82) and the receiving space (84) extending respectively on either side of the main insulating wall (78).

9. A battery module (16) according to any preceding claim, wherein the electrical connection device (70) further comprises an electrical connection mechanism (90) mounted on the insulating part (76), the second connection element (52) and the third connection element (58) being intended to be held in electrical contact with each other by the electrical connection mechanism (90).

10. The battery module (16) of claim 9, wherein the insulation piece (76) is overmolded onto at least a portion of the electrical connection mechanism (90).

11. A battery module (16) according to any preceding claim, wherein the insulating part (76) is made of a moldable thermoplastic material, for example acrylonitrile butadiene styrene.

12. Battery module (16) according to any one of the preceding claims, wherein the electrical connection device (70) further comprises a protective part (100) capable of being removably mounted on the insulating part (76) and configured to at least partially cover the second connection element (58) and the third connection element (64) so ​​as to restrict access to the second and third connection elements (58, 64), the protective part (100) and the insulating part (76) being intended to delimit a protective volume (102) in which the second connection element (58) and the third connection element (64) extend.

13. Battery module (16) according to claim 12, wherein the protective part (100) comprises a main protective wall (104) extending opposite the second connection element (58) and the third connection element (64) and two auxiliary walls of protection (106) extending from the main protection wall (104) towards the housing (20) in an extension direction (D), the protection volume (102) being intended to be delimited by the main protection wall (104), the two auxiliary protection walls (106) and the insulation part (76).

14. Battery module (16) according to claim 13 when taken in combination with claim 6, wherein the protective volume (102) is intended to be delimited by the main protective wall (104), the two auxiliary protective walls (106), the main insulating wall (78) and the two auxiliary insulating walls (80).

15. Battery module (16) according to claim 13 or 14, wherein each auxiliary protective wall (106) comprises at least one pre-cut (110) extending between at least two portions (107) of auxiliary protective wall (106) substantially perpendicular to the direction of extension (D), said auxiliary protective wall (106) being capable of being cut according to the at least one pre-cut (110) so as to adapt a dimension of said auxiliary protective wall (106) taken according to the direction of extension (D).

16. Battery module (16) according to any one of claims 12 to 15, wherein the protective part (100) is made of moldable thermoplastic material, for example acrylonitrile butadiene styrene.

17. A battery module (16) according to any one of claims 12 to 16, wherein the insulating part (76) is elastically deformable such that the insulating part (76) is clippable onto the housing (20), the protective part (100) being elastically deformable such that the protective part (100) is clippable onto the insulating part (76), the clipping of the protective part (100) onto the insulating part (76) constraining the insulating part (76) such that unclipping of the insulating part (76) from the housing is prevented when the protective part (100) is mounted on the insulating part (76).

18. Battery module (16) according to claim 17, wherein: - the housing (20) comprises at least one first clipping element (36); - the insulation part (76) comprises at least one second clipping element (87) and at least one third clipping element (88) arranged on at least one clipping wall (86) of the insulation part (76); - the protection part (100) comprises at least one fourth clipping element (114);

19.

20. the at least one first clipping element (36) of the housing (20) and the at least one second clipping element (87) of the insulating part (76) cooperating when the insulating part (76) is clipped onto the housing (20), the cooperation of the at least one first clipping element (36) and the at least one second clipping element (87) generating a first clipping moment (M1) in a first moment direction (SMI) on the corresponding clipping wall (86), the at least one third clipping element (88) of the insulating part (76) and the at least one fourth clipping element (114) of the protective part (100) cooperating when the protective part (100) is clipped onto the insulating part (76), the cooperation of the at least one third clipping element (88) and the at least one fourth clipping element (114) generating a second clipping moment (M2) in a second moment direction (SM2) on the corresponding clipping wall (86), the first direction of moment (SMI) and the second direction of moment (SM2) being opposite. Set (10) of battery modules (16), comprising a main battery module (16; 16A) according to any one of the preceding claims, a first additional battery module (16B) and a second additional battery module (16C). A method (200) of mounting a set (10) of battery modules (16) according to claim 19, comprising: - a connection (210) of the first terminal (40) with the first additional battery module (16B) via the first electrical connector (50); - a mounting (220) of the insulating part (76) of the electrical connection device (70) on the housing (20); - a connection (230) of the second terminal (42) with the second additional battery module (16C) via the second electrical connector (56), the electrical connection device (70) and the third electrical connector (62); the mounting of the insulating part (76) being such that the insulating part (76) of the electrical connection device (70) electrically insulates the first connection element (52) from the second (58) and third connection elements (64).

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