JP2015153533A - Battery module fixing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery module fixing structure that can improve workability of a connection work for a connector of a connector-appended trestle and a terminal of a battery module in a structure that a battery module is fixed to the connector-appended trestle.SOLUTION: A fixing structure for a battery module has module cases 24a, 24b in which plural battery cells 22a, 22b are mounted, battery modules 20a, 20b having a positive electrode terminal 28 and a negative electrode terminal 29, and a connector-appended trestle 50 which has a positive electrode connector 70 and a negative electrode connector 71 and is fixed to a vehicle body. The positive electrode terminal 28 and the negative electrode terminal 29 are formed to be fitted and connected to the positive electrode connector 70 and the negative electrode connector 71 by the movement of the battery modules when the battery modules 20a, 20b are installed on the connector-appended trestle 50.

Description

  The present invention relates to a battery module fixing structure including a battery module having a case accommodating a plurality of battery cells, a positive electrode terminal and a negative electrode terminal, and a mount with a connector to which the battery module is fixed.

  Patent Document 1 describes a battery fixing structure in which a battery assembly having a stacked portion of a plurality of battery cells and a vehicle body are fixed with bolts. A plurality of terminals for charging and discharging are provided on the side surface of the stacked portion.

JP 2006-236826 A

  In the battery fixing structure described in Patent Document 1, the battery assembly is a battery module. Patent Document 1 does not describe a connection structure between a battery module and an electric circuit provided on the vehicle body side. On the other hand, it is conceivable to install and fix the battery module on a mount with a connector fixed to the vehicle body. However, when the battery module is installed on the mount with connector and the connector of the mount with connector and the terminal of the battery module are connected, the installation work of the battery module and the connection work of the connector and the terminal are shifted in time. Therefore, it is desired to improve the workability of the terminal connection work.

  An object of the present invention is to provide a battery module fixing structure capable of improving workability of an operation of connecting a connector of a mount with a connector and a terminal of the battery module in a configuration in which the battery module is fixed to the mount with a connector. .

  The battery module fixing structure according to the present invention includes a battery module having a case for housing a plurality of battery cells, a positive terminal and a negative terminal protruding from the case, a positive connector connected to the positive terminal, and the negative electrode A mounting base with a connector that is fixed to a vehicle body, the mounting base having a connector on which the battery module is installed and fixed, and the battery module is installed on the mounting base with the connector And the fitting direction in which the positive terminal and the negative terminal are fitted to the positive connector and the negative connector coincides with each other, and the positive terminal and the negative electrode The terminal is connected to the positive connector and the terminal by the movement of the battery module when the battery module is installed on the mount with the connector. Wherein is formed so as to be fitted and connected to the negative electrode connector.

  In the battery module fixing structure according to the present invention, it is preferable that the positive electrode terminal and the negative electrode terminal have an end shape that faces in the vertical direction by bending a portion protruding from one end surface along the horizontal direction of the case. Then, when the battery module is installed on the mount with connector, the positive and negative terminals are fitted and connected to the positive connector and the negative connector by the vertical movement of the battery module. Formed as follows.

  Moreover, in the battery module fixing structure according to the present invention, preferably, the battery module includes two handles that are swingably supported at both ends in one direction along the horizontal direction of the case, The two engaging portions that are opposed to one end in one direction of the battery module in a state where the battery module is installed, and each of the two engaging portions is formed with an engaging groove on the opposite side to the battery module. Each of the handles is swayed, elastically deformed and locked in the locking groove in a state where the battery module is installed on the mount with connector, and thereby the battery module is mounted on the mount with connector. Fix it.

  In the battery module fixing structure according to the present invention, preferably, a second battery module including a second case that houses a plurality of second battery cells, and a supply duct and a discharge duct connected to the mount with connector The connector-equipped gantry has a cooling air passage therein, the case and the second case are fixed, and the cooling air passage is configured so that the cooling air supplied from the supply duct is supplied to the case and the second case. Air is sent in parallel to the inside of the case and the second case through the inlets provided in the two cases, and is provided in the case and the second case after flowing through the inside of the case and the second case. It is formed to be discharged through the outlet and sent to the discharge duct.

  In the battery module fixing structure according to the present invention, preferably, the mount with a connector includes two openings that are closed by the battery module and the second battery module, and the openings communicate with the cooling air passage. The inlet and the outlet of the battery module and the second battery module communicate with the cooling air passage through the openings.

  According to the battery module fixing structure according to the present invention, the work of installing the battery module on the mount with connector and the work of connecting the connector of the mount with connector and the terminal of the battery module can be performed simultaneously. The workability of the work to be performed can be improved.

It is a schematic sectional drawing of the battery module fixing structure in embodiment of this invention. In FIG. 1, it is a figure which isolate | separates and shows a stand with a connector and a battery module. FIG. 2 is a view partially omitted from the AA cross-sectional view of FIG. 1. FIG. 2 is a perspective view showing the battery module fixing structure of FIG. 1 with some battery modules omitted. It is the B section enlarged correspondence figure of FIG. It is a figure which takes out and expands and shows one battery module from FIG. It is the perspective view which looked at the battery module of FIG. 6 from the lower side. It is the figure seen from the upper part of FIG. FIG. 5 is a schematic view showing a state in which the battery module is fixed to the mount with a connector by a handle in the battery module fixing structure of FIG. 4. It is the C section enlarged view of FIG. FIG. 2 is a schematic view for explaining the flow of cooling air in the battery module fixing structure of FIG. 1. It is a schematic sectional drawing which shows another example of the battery module fixing structure in embodiment of this invention.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. In this description, specific shapes, materials, numbers, and directions are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application or specifications. In the following description, similar elements are denoted by the same reference numerals in all drawings.

  FIG. 1 is a schematic cross-sectional view showing a battery module fixing structure 10 according to the embodiment. FIG. 2 shows the connector-equipped pedestal 50 and the battery modules 20a and 20b in FIG. FIG. 3 is a diagram corresponding to the AA cross section of FIG. 1. FIG. 4 is a perspective view showing the battery module fixing structure 10 of FIG. 1 with some battery modules omitted. FIG. 5 is an enlarged view corresponding to part B of FIG.

  The battery module fixing structure 10 includes a battery fixing cooling unit 14 that is fixed to the vehicle body 12 and has a connector-mounted base 50, and a plurality of battery modules 20a, 20b,.

  Battery module 20a, 20b ... 20f is used as a power source of the electric equipment of vehicles. For example, when the vehicle is an electric vehicle, a hybrid vehicle, or a fuel cell vehicle driven by an electric motor (not shown), the battery modules 20a, 20b,... 20f supply electric power to the electric motor via an inverter (not shown). . Battery modules 20a, 20b,... 20f are detachably mounted on the vehicle body 12, respectively. Thus, as will be described later, when the charging power of the battery modules 20a, 20b,... 20f is reduced, the battery module 20a, The labor and charging time for charging 20b to 20f can be omitted.

  The vehicle body 12 is equipped with six battery modules, a first battery module 20a, a second battery module 20b,... A sixth battery module 20f. , Sometimes referred to as “battery module 20”.

  The battery module 20 may be configured to have a function of being supplied with power and charged when regenerative power is generated by an electric motor during braking of the vehicle or a generator driven by an engine is provided.

  The battery module 20 is electrically connected to an electric circuit including an electric motor as will be described later. The plurality of battery modules 20 are cooled by sending cooling air in parallel by the battery fixed cooling unit 14 as will be described later. Next, the battery fixed cooling unit 14 will be described, and then the battery module 20 will be described in detail.

  The battery fixed cooling unit 14 is formed to include a pedestal 50 with a connector, two upper and lower terminal block cases 60 and 61, a supply duct 62, a discharge duct 64, and a circuit housing case 66. The connector-equipped pedestal 50 and the circuit housing case 66 are fixed to a floor panel or a frame forming the vehicle body 12 by fastening means including bolts (not shown) at the rear portion or the middle portion in the front-rear direction of the vehicle body 12.

  The gantry 50 with a connector has a cooling air passage 51 inside, a main body 53 having a plurality of (three in the illustrated example) openings 52 (FIG. 2) at both upper and lower ends, and the length of the main body 53. Two plate portions 54 protruding in the horizontal direction from both ends in the direction, and two wall portions 55 extending in the vertical direction with a vertical intermediate portion connected to the tip of each plate portion 54.

  The main body 53 is provided at the periphery of each opening 52 on both the upper and lower sides, and the first, second, third, fourth, fifth, and sixth battery modules 20a, 20b, 20c, 20d, 20e, and 20f, respectively. It has the 1st, 2nd, 3rd, 4th, 5th, 6th battery contact part 56a, 56b, 56c, 56d, 56e, 56f which a lower surface or upper surface contacts. Each opening 52 is formed inside the first, second... Sixth battery contact portions 56a, 56b. Each of the battery contact portions 56 a, 56 b,... 56 f may be a frame portion on a horizontal plane provided at the peripheral edge portion of each opening 52 on the upper and lower side surfaces of the main body portion 53. As a fixing means of the battery module 20, a handle 26 provided on the battery module 20 is used as will be described later. Each battery module 20a, 20b,... 20f is installed in each battery contact portion 56a, 56b,... 56f, and each opening 52 is closed by each battery module 20a, 20b,.

  A plurality (six in the illustrated example) of flanges 57 projecting to the opposite side with respect to the main body 53 are provided at both ends of each wall 55 in the vertical direction. A locking groove 58 that can lock a handle 26 (FIG. 3), which will be described later, is formed on the outer surface of each flange portion 57 opposite to the main body portion 53. The locking groove 58 has, for example, an arc-shaped cross section.

  The two terminal block cases 60 and 61 are fixed to both the upper and lower sides of the one plate portion 54 on the right side in FIGS. In this case, each of the terminal block cases 60 and 61 may be fixed to the one plate portion 54 with a bolt, but may be fixed to the mount 50 with a connector by locking a handle 26 described later to the flange portion 57. Good.

  Each terminal block case 60, 61 includes a positive connector 70 and a negative connector 71 provided inside. Each of the connectors 70 and 71 is connected to a positive electrode side and a negative electrode side of an electric circuit including an electric motor and an inverter (not shown).

  The positive connector 70 and the negative connector 71 have a connection port 72 that faces in the vertical direction. An insertion hole 73 is formed at the upper end of the upper terminal block case 60 so as to face the upper side of the upper connection port 72, and the lower end of the lower terminal block case 61 is opposed to the lower side of the lower connection port 72. An insertion hole 74 is formed.

  As shown in FIG. 4, the supply duct 62 is fixed to the upper surface of the circuit housing case 66. The circuit housing case 66 houses a power control unit 68 including a control device and an inverter. In FIG. 4, the inside of the circuit housing case 66 is shown through. The supply duct 62 includes a plurality of branch portions 80 and a trunk portion 82 connected to the downstream end of the branch portion 80, and a cooling fan (not shown) is provided at an inner intermediate portion of the supply duct 62. The downstream end portion of the trunk portion 82 is connected to the cooling air passage 51 inside the main body portion 53 at the right end portion in FIG. 4, which is one end portion in the length direction of the main body portion 53 of the mount 50 with a connector.

  The discharge duct 64 passes through the upstream end connected to the cooling air passage 51 and the through hole formed in the wall portion of the circuit housing case 66 at the left end in FIG. And a downstream end connected to the inside of the circuit housing case 66. The functions of the supply duct 62 and the discharge duct 64 will be described later.

  The control device provided in the circuit housing case 66 calculates, for example, a target torque of the electric motor from an operation position of an accelerator pedal detected by a pedal position sensor (not shown), and represents an on / off state of switching in the inverter according to the target torque. A control signal is output to drive the inverter. The inverter converts the DC power supplied from the battery module 20 into AC power and drives the electric motor.

  4 and 5 and FIGS. 6 to 9 described later, a height direction H, a length direction L, and a width direction W are shown as three axial directions orthogonal to each other. The height direction H is a vertical direction or a vertical direction when the battery module 20 is installed on a horizontal plane. The length direction L and the width direction W are directions orthogonal to each other on a horizontal plane. Here, the longer dimension of the battery module 20 is defined as the length direction L, and the shorter dimension is defined as the width direction W.

  FIG. 6 is an enlarged view of one battery module 20a taken out from FIG. FIG. 7 is a perspective view of the battery module 20a of FIG. 6 as viewed from below. FIG. 8 is a view from above of FIG. 6 to 8, the left and right directions of the battery module 20a are reversed from those in FIG. 5 and 6, the inside of the cover 27 of the battery module 20 is shown through.

  The battery module 20 is formed in a rectangular parallelepiped shape. The battery module 20 includes a plurality of battery cells 22a that are electrically connected to each other and arranged in a staggered manner, a module case 24a that houses the plurality of battery cells 22a, a cover 27, and a positive terminal 28. And a negative electrode terminal 29.

  The battery module 20 is configured such that a predetermined battery capacity is obtained by connecting a plurality of battery cells 22a in series with a plurality of battery cells 22a connected in parallel as a set.

  The battery cell 22a is a chargeable / dischargeable secondary battery, and a lithium ion battery is used. In addition, a nickel metal hydride battery, an alkaline battery, or the like may be used. A square battery may be used as the battery cell 22a. As the battery module 20, a configuration in which the battery cells 22a are connected in parallel may be used.

  The module case 24 a includes a case body 25 and a cover 27. The case main body 25 is formed of a metal, for example, an aluminum alloy, into a rectangular parallelepiped shape having an opening at the upper end in FIG. The case main body 25 includes two handles 26 supported at both ends in the length direction L, and a plate portion 30 provided at the lower end of FIG. The two handles 26 will be described later. A plurality of slits 31 arranged in parallel in the length direction L are provided in the middle portion of the plate portion 30, and the left end portion in FIG. 7, which is one end side in the length direction L of the plate portion 30, is provided. A rectangular cooling air inlet 32 is provided, and a rectangular cooling air outlet 33 is provided at the right end of FIG.

  The cover 27 is attached at one end in the height direction H of the case body 25 so as to close the opening. The cover 27 is formed of resin, for example. Inside the module case 24a, an internal passage 34 is provided between the plurality of battery cells 22a.

  In the above description, a plurality of battery modules are representatively described as the first battery module 20a, but the other battery modules 20b, 20c,... 20f are also formed in the same manner as the first battery module 20a. Returning to FIG. 3, the second battery module 20b is arranged to face the lower side of the first battery module 20a, and the third battery module 20c is the width direction of the first battery module 20b. Next to each other. The fourth battery module 20d is disposed to face the lower side of the third battery module 20c. The fifth battery module 20e is arranged adjacent to the width direction of the third battery module 20c, and the sixth battery module 20f is arranged facing the lower side of the fifth battery module 20e.

  As shown in FIG. 1, the second battery module 20b includes a plurality of second battery cells 22b that are electrically connected to each other, and a second module case 24b that houses the plurality of second battery cells 22b. The third, fourth, fifth, and sixth battery modules 20d, 20e, and 20f include a plurality of third, fourth, fifth, and sixth battery cells (not shown) and a plurality of third, fourth, and fifth battery cells, respectively. And third, fourth, fifth, and sixth module cases 24d, 24e, and 24f that house the sixth battery cells.

  The positive electrode terminal 28 and the negative electrode terminal 29 are input / output terminals when charging / discharging the plurality of battery cells 22 a, and are formed to protrude from one end portion in the length direction L of the battery module 20. The positive electrode terminal 28 is connected to the positive electrode of the battery cell 22a at the positive electrode end of the plurality of battery cells 22a, and the negative electrode terminal 29 is connected to the negative electrode of the battery cell 22a at the negative electrode end of the plurality of battery cells 22a. .

  The positive electrode terminal 28 and the negative electrode terminal 29 form an outer surface of the module case 24a, and an end facing the height direction H by bending a portion protruding outward from one end surface in the length direction L along the horizontal direction. It has a part shape and is formed in an L shape as a whole. The positive electrode terminal 28 and the negative electrode terminal 29 are covered with an L-shaped resin portion 35 integral with the cover 27 except for the end portion on the connector side. 5 and 6, the inside of the resin portion 35 is also seen through.

  When the battery modules 20a, 20b,... 20f are installed in the battery contact portions 56a, 56b,... 56f, the height direction H that is the moving direction of the battery modules 20a, 20b,. The height direction H which is the fitting direction in which the positive electrode terminal 28 and the negative electrode connector 71 are fitted to the negative electrode connector 71 coincides with the negative electrode connector 71. Further, when the battery modules 20a, 20b,... 20f are installed in the battery contact portions 56a, 56b,... 56f, the connectors of the positive terminal 28 and the negative terminal 29 are moved by the movement of the battery modules 20a, 20b,. The side end portions are fitted and connected to the positive connector 70 and the negative connector 71 shown in FIG.

  The first, third, and fifth module cases 24a, 24c, and 24e are installed in the battery contact portions 56a, 56c, and 56e by moving downward, and the second, fourth, and sixth module cases 24b, 24d, and 24f are installed. Are installed in the battery contact portions 56b, 56d, and 56f by moving upward. As a result, the positive terminal 28 and the negative terminal 29 are connected to the positive connector 70 at the end of the positive terminal 28 by moving the module cases 24a, 24b,. It is formed so that the end of the negative electrode terminal 29 is fitted and connected. This can improve the workability of connecting the positive terminal 28 and the negative terminal 29 to the positive and negative connectors 70 and 71 as described later.

  Each of the battery modules 20a, 20b,..., 20f is fixed to the connector mount 50 so as to close each opening 52. In this state, the cooling air inlet 32 and the cooling air outlet 33 of each of the battery modules 20 a, 20 b... 20 f communicate with the cooling air passage 51 inside the connector-equipped gantry 50 through the openings 52. As a result, the cooling air passage 51 allows the cooling air supplied from the supply duct 62 to enter the module cases 24a, 24b,... 24f through the cooling air inlets 32 of the module cases 24a, 24b,. It is configured to be sent in parallel with respect to the air flow. In this case, the cooling air flows in parallel in the module cases 24a, 24b,... 24f, and then is discharged through the cooling air outlet 33 of each module case 24a, 24b,.

  Furthermore, each battery module 20 includes two handles 26 supported at both ends in the length direction L so as to be swingable about an axis along the width direction W. As shown in FIGS. 6 and 7, each handle 26 includes a handle body 36 formed by bending a metal wire, for example, an iron wire, and a resin tube 37. The handle main body 36 includes two leg portions 38 that are provided on both sides in the width direction W and are bent at a plurality of locations, and a connection portion 39 that connects one end of each leg portion 38 to each other so as to be substantially along the width direction. Have. The other end of each leg portion 38 is connected to a shaft portion 40 facing coaxially along the width direction W. Each shaft part 40 is inserted and supported in a hole penetrating in the width direction W by a support protrusion 41 protruding from both end faces in the length direction L of the module case 24a. The resin tube 37 is fitted around the connecting portion 39. In the battery modules 20d, 20e, and 20f, the relationship in the height direction of each component is reversed with respect to the battery modules 20a, 20b, and 20c.

  FIG. 9 is a schematic view showing a state where the battery module 20a is fixed to the mount 50 with a connector by the handle 26 in the battery module fixing structure 10 of FIG. FIG. 10 is an enlarged view of a portion C in FIG. In a state where the battery module 20 a is installed on the mount 50 with a connector, each handle 26 is locked in a locking groove 58 provided on the two wall portions 55 of the mount 50 with a connector. In this case, each handle 26 is swung downward (upward in the case of the battery modules 20b, 20d, and 20f) around the shaft portion 40. In this case, in each handle 26, while the portion between the shaft portion 40 and the connecting portion 39 is elastically deformed, the connecting portion 39 turns around below the flange portion 57, and the resin tube 37 is engaged with the locking groove 58. Stopped. In this state, the battery module 20a is pulled to both sides in the length direction L by the elastic force of the handle 26, and the battery module 20a is fixed to the vehicle body without rattling. Thus, each handle 26 has a function of fixing the battery module 20a to the vehicle body via the mount 50 with a connector. Each handle 26 also has a function that is used by a user or an operator to hold and carry the battery module 20a on the connector-equipped gantry 50 or to carry the battery module 20a from the connector-equipped gantry 50. Have.

  When removing the battery module 20a from the vehicle body, each handle 26 is elastically deformed to disengage the engaging groove 58 from the handle 26, and the handle 26 is moved upward (in the case of the battery modules 20b, 20d, and 20f, the lower side). To the side). Accordingly, the battery module 20a having a reduced charge amount can be easily removed without using a tool, and can be easily replaced with a fully charged battery module. In addition, since it is not necessary to fix the battery module 20a to the vehicle with separate parts such as bolts and nuts from the handle 26, the installation space for the battery module 20a can be reduced and the number of parts can be reduced.

  On the other hand, as a comparative example, a structure in which a handle is formed by a metal plate fixed to the battery module 20a is also conceivable. In this comparative example, when the battery module 20a is inclined with respect to the horizontal direction, the battery module 20a is transported. It is difficult to maintain the user's carrying posture at the time. In the configuration of this example, since the handle 26 swings with respect to the module case 24a, even when the battery module 20a is inclined with respect to the horizontal direction, it is possible to maintain a good transport posture of the user when transporting the battery module 20a, The workability of the transportation work can be improved.

  Up to six battery modules 20a, 20b,..., 20f can be installed on both the upper and lower sides of the mount 50 with a connector. The number of battery modules 20 mounted on the vehicle can be arbitrarily changed. Thus, the number of battery modules mounted can be changed according to the travel distance to the next battery module replacement place. When some of the battery modules are not mounted on the vehicle, as shown in FIG. 4, among the plurality of openings 52 of the connector-mounted base 50, the opening 52 that is not blocked by the battery module is closed by the lid 90. As a result, the opening 52 is blocked in the cooling air passage 51 even in the absence of some battery modules, so that the cooling performance can be maintained even when the number of battery modules mounted is changed.

  In the case of a vehicle in which the number of battery modules mounted cannot be changed, the distance that can be traveled by only the electric motor is determined according to the number of battery modules mounted, so that the travelable places are limited. Further, when the battery module cannot be easily replaced, it is necessary to charge at the charging station when the charge amount of the battery module decreases. In this case, it may take a long time to charge. The configuration of this example does not cause such inconvenience.

  According to the battery module 20 described above, when the battery module 20 is installed on the connector mount 50 fixed to the vehicle body, as shown in FIG. 2, the battery module 20 is arranged in the vertical direction (the directions of arrows P1 and P2 in FIG. 2). The positive terminal 28 and the negative terminal 29 are fitted and connected to the positive connector 70 and the negative connector 71 in the vertical direction, respectively. For this reason, the operation | work which installs the battery module 20 in the mount frame 50 with a connector, and the operation | work which connects the positive electrode connector 70 and the negative electrode connector 71 and the positive electrode terminal 28 and the negative electrode terminal 29 which are provided in the mount frame 50 with a connector can be performed simultaneously. Accordingly, the workability of connecting the terminals 28 and 29 to the connectors 70 and 71 can be improved.

  When each battery module 20 is cooled, the control device drives the cooling fan so that the cooling air flows through the supply duct 62 and the cooling air passage 51 as indicated by the arrow α in FIGS. 4 and 11. It is supplied to the inside of each battery module 20 via a cooling air inlet 32. The cooling air flows in parallel to each battery module 20 as indicated by an arrow β in FIGS. 4 and 11, and then is discharged to the cooling air passage 51 through the cooling air outlet 33, as indicated by an arrow γ. To the discharge duct 64. In this case, as indicated by an arrow δ in FIG. 1, the cooling air sent to the inside from the cooling air inlet 32 of each battery module 20 flows while cooling the battery cells 22 a and 22 d inside, and from the cooling air outlet 33. Discharged. Thereby, each battery module 20 can be cooled with equivalent cooling performance. Moreover, even when some battery modules 20 are removed or the number of battery modules 20 mounted is changed by adding the battery modules 20, the cooling performance equivalent to the cooling performance before the change can be maintained. Further, as shown in FIG. 4, the cooling air discharged to the discharge duct 64 is blown to the electric components including the power control unit 68 accommodated in the circuit accommodating case 66, so that the electric components can be cooled. In this example, the cooling air is also sent into each battery module 20 through the slit 31 (FIG. 7), but most of the cooling air is sent from the cooling air inlet 32 having a large opening area to the inside. In the plate part 30 of the battery module 20, each slit 31 may be omitted.

  4 and 11, the supply duct 62 can be used as a discharge duct and the discharge duct 64 can be used as a supply duct. In this case, in FIG. 4 and FIG. 11, cooling air flows in the direction opposite to the arrows α and β. In this case, the cooling air inlet and the cooling air outlet provided in each battery module 20 are reversed.

  In the above description, the moving direction when the battery module 20 is installed on the mount 50 with the connector and the direction in which the terminal is connected to the connector are set in the vertical direction. However, as in another example shown in FIG. The moving direction in the case of installing on the mounting base 50 and the direction in which the terminal 28 is connected to the connector 70 may be the horizontal direction indicated by the arrow η.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to such embodiment at all, In the range which does not deviate from the summary of this invention, it can implement with a various form. Of course. For example, the plurality of battery modules 20 may be electrically connected in parallel. In this case, it is preferable to make the voltages of the battery modules 20 coincide with each other. The plurality of battery modules 20 may be electrically connected in series, or a plurality of battery modules 20 may be connected in series with one battery module 20 connected in parallel. The number of battery modules that can be mounted is not limited to six, and may be one or any plurality. For example, only the first battery module 20a and the second battery module 20b among the battery modules are fixed to the mount with connector, and the mount with connector has two openings that are closed by the battery modules 20a and 20b. . In this case, the cooling air inlet 32 and the cooling air outlet 33 of each battery module 20a, 20b are configured to communicate with the cooling air passage 51 through the openings. Moreover, it is good also as a structure which can fix the battery module 20 only to the upper side or the lower side of the base 50 with a connector. The battery module 20 may be fixed to a mount with a connector that does not have a cooling air passage.

DESCRIPTION OF SYMBOLS 10 Battery module fixed structure, 12 Vehicle body, 14 Battery fixed cooling unit, 20a 1st battery module, 20b 2nd battery module, 20c 3rd battery module, 20d 4th battery module, 20e 5th battery module, 20f 6th battery module 22a First battery cell, 22b Second battery cell, 22c Third battery cell, 22d Fourth battery cell, 22e Fifth battery cell, 22f Sixth battery cell, 24a First module case, 24b Second module case, 24c Third module case, 24d Fourth module case, 24e Fifth module case, 24f Sixth module case, 25 Case body, 26 Handle, 27 Cover, 28 Positive terminal, 29 Negative terminal, 30 Plate part, 31 Slit, 32 Cooling Air inlet, 33 Cooling air Mouth, 34 Internal passage, 35 Resin part, 36 Handle body, 37 Resin tube, 38 Leg part, 39 Connecting part, 40 Shaft part, 41 Supporting protrusion, 50 Mount with connector, 51 Cooling air passage, 52 Opening, 53 Body Part, 54 plate part, 55 wall part, 56a first battery contact part, 56b second battery contact part, 56c third battery contact part, 56d fourth battery contact part, 56d fifth battery contact part, 56e sixth battery contact Part, 57 collar part, 58 locking groove, 60, 61 terminal block case, 62 supply duct, 64 discharge duct, 66 circuit housing case, 68 power control unit, 70 positive connector, 71 negative connector, 72 connection port, 73, 74 Insertion holes, 80 branches, 82 trunks, 90 lids.

Claims (3)

A battery module having a case containing a plurality of battery cells, and a positive electrode terminal and a negative electrode terminal protruding from the case;
A gantry with a connector having a positive electrode connector connected to the positive electrode terminal and a negative electrode connector connected to the negative electrode terminal, and fixed to a vehicle body, the gantry with connector to which the battery module is installed and fixed; With
The movement direction of the battery module when the battery module is installed on the mount with the connector and the fitting direction in which the positive terminal and the negative terminal are fitted to the positive connector and the negative connector are the same. I do it,
The positive electrode terminal and the negative electrode terminal are formed to be fitted and connected to the positive electrode connector and the negative electrode connector by movement of the battery module when the battery module is installed on the mount with connector. Fixed structure. The battery module fixing structure according to claim 1, wherein
The battery module includes two handles swingably supported at both ends in one direction along the horizontal direction of the case,
The mount with a connector is two engaging portions facing one end in one direction of the battery module in a state where the battery module is installed, and an engaging groove is formed on the opposite side to the battery module. Including two locking parts,
Each handle is rocked, elastically deformed and locked in the locking groove in a state where the battery module is installed, thereby fixing the battery module to the mount with connector. . In the battery module fixing structure according to claim 1 or 2,
A second battery module including a second case containing a plurality of second battery cells, and a supply duct and a discharge duct connected to the mount with connector,
The mount with connector has a cooling air passage inside, and the case and the second case are fixed,
In the cooling air passage, the cooling air supplied from the supply duct is sent in parallel with respect to the air flow into the case and the second case through an inlet provided in the case and the second case, and A battery module fixing structure formed so as to flow inside the case and the second case and then be discharged through an outlet provided in the case and the second case and sent to the discharge duct.

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