JP2017152187A - Battery for on-vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a battery module by reducing impact against the battery module.SOLUTION: A battery for on-vehicle, comprises: a battery module 3 having a battery cell; a housing case 2 that houses the battery module; and a holding tray 6 that is distributed in an inner part of the battery cell and holds the battery module. A distribution convex part 6a in which the battery module is arranged on the holding tray is formed, and an impact absorption part 25 is provided on a rear end part of the holding tray. Thus, impact is absorbed by the impact absorption part provided on the rear end part of the holding tray when applying the impact against a vehicle. Since the impact is hardly transmitted to the battery module arranged in the distribution convex part, the impact against the battery module is reduced, thereby the battery module can be protected.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a technical field of an in-vehicle battery including a storage case for storing a battery module and a holding tray for holding the battery module.

Japanese Patent No. 5206110

  Various types of vehicles such as automobiles are equipped with in-vehicle batteries for supplying electric power to motors and various electrical components.

  In recent years, vehicles such as EVs (Electric Vehicles), HEVs (Hybrid Electric Vehicles), and PHEVs (Plug-in Hybrid Electric Vehicles) are becoming popular. In a vehicle powered by electricity, an in-vehicle battery having a high power storage function is mounted.

  The in-vehicle battery is provided with a storage case and a battery module stored in the storage case, and the battery module is configured by arranging a plurality of battery cells (secondary batteries) such as a nickel metal hydride battery and a lithium ion battery, for example. Has been. In addition, in-vehicle batteries mounted on electric vehicles and the like have a plurality of battery modules arranged in a storage case in order to maintain a high power storage function, and the battery cells of these plurality of battery modules are connected in series or in parallel. Some have been done.

  Some of such in-vehicle batteries are disposed in a luggage compartment formed at the rear of the vehicle (see, for example, Patent Document 1).

  The on-vehicle battery described in Patent Document 1 is located between the rear side frames of the vehicle body that are spaced apart from each other on the left and right.

  In a vehicle equipped with a vehicle-mounted battery described in Patent Document 1, the vehicle-mounted battery is disposed on the front side in the cargo compartment, and the space on the rear side of the storage case in the cargo compartment serves as a crushable area. Is formed. Therefore, when an impact is applied from the rear due to a collision from the rear of the vehicle, the pair of rear side frames are crushed and the impact is absorbed, the in-vehicle battery is protected, and the battery module is unlikely to be damaged, such as smoke or ignition. It is possible to prevent the occurrence of.

  By the way, in-vehicle batteries arranged in the luggage compartment of the vehicle as described above may be arranged at various positions in the luggage compartment depending on the structure of the vehicle, the structure of the luggage compartment, and the like. Further, depending on the type of vehicle-mounted battery and the structure of the vehicle, there is a possibility that the vehicle is disposed at a position other than the luggage compartment at the rear of the vehicle.

  Therefore, even when the vehicle-mounted battery is disposed at any position in the rear portion of the vehicle, it is difficult to apply an impact due to a collision from the rear to the vehicle to the battery module, and it is necessary to protect the battery module. ing.

  Therefore, an object of the present invention is to overcome the above-described problems and to protect the battery module by reducing the impact on the battery module.

  1stly, the vehicle-mounted battery which concerns on this invention is equipped with the battery module which has a battery cell, the storage case which accommodates the said battery module, and the holding tray which is arrange | positioned inside the said storage case and hold | maintains the said battery module. An arrangement recess in which the battery module is arranged is formed in the holding tray, and an impact absorbing portion is provided at the rear end of the holding tray.

  Thereby, when an impact is applied to the vehicle, the impact is absorbed by the impact absorbing portion provided at the rear end portion of the holding tray, and the impact is difficult to be transmitted to the battery module disposed in the placement recess.

  Secondly, in the above-described vehicle-mounted battery according to the present invention, the impact absorbing portion includes a connecting surface portion whose thickness direction is set in the vertical direction, a front surface portion protruding from the front edge of the connecting surface portion, and the rear of the connecting surface portion. It is desirable to have a rear surface portion protruding from the edge and facing the front surface portion.

  Thereby, the cross-sectional shape of the shock absorbing portion is formed in a U-shape by the connecting surface portion, the front surface portion, and the rear surface portion 28, so that the structure is simplified.

  Thirdly, in the above-described vehicle-mounted battery according to the present invention, a first bracket for holding the battery module is provided, a lock insertion hole is formed in the holding tray, and the lock insertion hole in the holding tray is formed. The front portion and the rear portion of the first bracket are provided as a front lock portion and a rear lock portion, respectively, a fixed portion to be fixed to the holding tray is provided at a front end portion of the first bracket, and the first portion An inserted portion to be inserted into the lock insertion hole is provided at the rear end portion of the bracket, and an impact from the rear is applied to the holding tray, and the rear lock portion is displaced in a direction approaching the front lock portion. In the state, it is desirable that the inserted portion is locked to the holding tray.

  As a result, when an impact from the rear is applied to the holding tray, the first bracket is held by the holding tray, and the dropping from the holding tray is restricted, and the impact is received by the first bracket.

  Fourthly, in the above-described vehicle-mounted battery according to the present invention, the holding tray is provided with a placement surface portion on which the battery module is placed in a state where the battery module is placed in the placement recess, It is desirable that the thickness of the fixed portion and the inserted portion is greater than the thickness of the placement surface portion.

  As a result, when an impact from the rear is applied to the holding tray, the impact is received by the fixed portion and the insertion portion that are thicker than the placement surface portion.

  5thly, in the vehicle-mounted battery which concerns on above-mentioned this invention, the said fastening tray is provided with the bolt fastening part fastened by another member with a volt | bolt, The volt | bolt by which the said volt | bolt is penetrated by the said bolt fastening part It is desirable that an insertion hole and an impact relaxation hole positioned before and after the bolt insertion hole are formed.

  As a result, when an impact from the rear is applied to the holding tray, the holding tray is deformed so that the area of the rear impact buffering hole becomes small and the area of the front shock buffering hole becomes large, and the bolt fastening position Is difficult to change.

  6thly, in the vehicle-mounted battery which concerns on above-mentioned this invention, it is desirable to provide a pair of 2nd bracket which is fixed to the both right-and-left both ends of the said holding tray, and hold | maintains the said battery module from right and left.

  Thereby, the state arrange | positioned at the holding tray of a battery module by the 2nd bracket is hold | maintained.

  According to the present invention, when an impact is applied to the vehicle, the impact is absorbed by the impact absorbing portion provided at the rear end portion of the holding tray, and the impact is transmitted to the battery module disposed in the placement recess. Therefore, the impact on the battery module is reduced and the battery module can be protected.

2 to 10 show an embodiment of the in-vehicle battery of the present invention, and this figure is a perspective view of the in-vehicle battery. It is a disassembled perspective view of the vehicle-mounted battery shown in a state where the storage case is omitted. It is sectional drawing of the vehicle-mounted battery which shows a bolt fastening part etc. It is a top view which shows a bolt fastening part. It is sectional drawing of the vehicle-mounted battery which shows a bumper part etc. in the state which abbreviate | omitted the storage case. It is sectional drawing which shows the shape of the insertion hole for lock | rocks. It is sectional drawing which shows the state by which the to-be-inserted part of a 1st bracket is inserted in the insertion hole for lock | rock. It is sectional drawing which shows the state which the impact was provided from back and the rear surface part of the storage case was deform | transformed. It is sectional drawing which shows the state where the impact was given from back and the impact-absorbing part was deform | transformed and the insertion part of the 1st bracket was locked. It is a top view which shows the state where the impact was provided from back and the bolt fastening part was deform | transformed.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this vehicle-mounted battery of this invention is demonstrated with reference to an accompanying drawing.

  The in-vehicle battery 1 is disposed, for example, in a luggage compartment located behind the rear seat.

  The in-vehicle battery 1 has a storage case 2 and a battery module 3 (see FIG. 1).

  The storage case 2 has, for example, a box-shaped storage part 4 opened upward and a lid part 5 that closes the opening of the storage part 4. The storage unit 4 is fixed to a vehicle body such as a floor panel.

  The battery module 3 is configured by arranging a plurality of battery cells (not shown) side by side in a horizontally long case body 3a. The plurality of battery cells are connected in series. A plurality of battery modules 3 may be housed inside the housing case 2, and in this case, for example, the plurality of battery modules 3, 3,...

  Hereinafter, as an example, a case where one battery module 3 is stored in the storage case 2 will be described.

  The battery module 3 is held by a holding tray 6 disposed inside the storage case 2 (see FIGS. 1 and 2). The holding tray 6 is made of a highly rigid metal material and is fixed to the bottom surface of the storage case 2. The holding tray 6 may be fixed to the vehicle body. In this case, for example, the storage case 2 is formed in a box shape opened downward, and the storage case 2 and the holding tray 6 are respectively fixed to the vehicle body. The Further, the storage case 2 and the holding tray 6 may be fastened together by bolts and fixed to the vehicle body.

  As shown in FIG. 2, the holding tray 6 is disposed with a disposition surface portion 7 that is formed in a horizontally long and substantially rectangular shape with a thickness direction in the vertical direction, and a front wall portion 8 that protrudes upward from the front edge of the disposition surface portion 7. The rear wall portion 9 protrudes upward from the rear edge of the surface portion 7 and the side wall portions 10 and 10 protrude upward from the left and right side edges of the arrangement surface portion 7. The holding tray 6 is formed with an arrangement recess 6 a that is opened upward by the arrangement surface portion 7 being surrounded by the front wall portion 8, the rear wall portion 9, and the side wall portions 10, 10. In the holding tray 6, the battery module 3 is inserted into the arrangement recess 6 a.

  The arrangement surface portion 7 is provided as a flat placement surface portion 11 except for a part.

  .. Are formed at the front end portion of the placement surface portion 7 so as to be projected downward from the placement surface portion 11 so as to be spaced apart from each other (see FIGS. 2 and 3). . The front side fixing portion 12 includes an annular bolt fastening portion 13 and a peripheral surface portion 14 whose lower edge is continuous with the outer peripheral portion of the bolt fastening portion 13, and an upper edge of the peripheral surface portion 14 is continuous with the mounting surface portion 11. . The center hole of the bolt fastening portion 15 is formed as a bolt insertion hole 13a.

  .. Are provided at the rear end portion of the placement surface portion 7 so as to be projected downward from the placement surface portion 11 and spaced apart from each other (FIGS. 2 to 4). reference). The rear-side fixing portion 15 includes an annular bolt fastening portion 16 and a peripheral surface portion 17 whose lower edge is continuous with the outer peripheral portion of the bolt fastening portion 16, and the upper edge of the peripheral surface portion 17 is continuous with the mounting surface portion 11. Yes.

  The central hole of the bolt fastening portion 16 is formed as a bolt insertion hole 16a. In the bolt fastening portion 16, an impact relaxation hole 16b and an impact relaxation hole 16c are formed at positions before and after the bolt insertion hole 16a, respectively. The impact relaxation hole 16b and the impact relaxation hole 16c are, for example, formed in an arc shape with the center of the bolt insertion hole 16a as a reference. Note that the impact relaxation hole 16b and the impact relaxation hole 16c are not limited to the arc shape, and may be formed in other shapes such as a straight line.

  In the above, an example in which the impact relaxation hole 16b and the impact relaxation hole 16c are formed in the bolt fastening portion 16 of the rear side fixing portion 15 is shown, but two impacts are also applied to the bolt fastening portion 13 of the front side fixing portion 12. Relaxation holes may be formed.

  A bumper portion 18 is provided at the rear end portion of the arrangement surface portion 7 in the center portion in the left-right direction (see FIG. 5). The bumper portion 18 protrudes downward with respect to the mounting surface portion 11, and lock insertion holes 19, 19 penetrating vertically are formed in the bumper portion 18 so as to be spaced apart from each other (see FIGS. 2 and 5). ).

  As shown in FIG. 6, the lock insertion hole 19 includes a longitudinal portion 19 a formed in a horizontally long shape and end portions 19 b and 19 b that are continuous to the left and right ends of the longitudinal portion 19 a, respectively, and opens rearward. It is formed in a U shape.

  The bumper portion 18 is provided with a front portion of the lock insertion hole 19 as a front lock portion 20 and a rear portion of the lock insertion hole 19 as a rear lock portion 21 (see FIG. 5). The rear side of the front lock part 20 is formed as a flat part 20a. The rear lock portion 21 is provided with a front protruding end portion 21a that protrudes forward and a rear protruding end portion 21b that protrudes rearward (see FIGS. 5 and 6). The front protruding end 21a is positioned between the end portions 19b and 19b of the locking insertion hole 19, and the width in the left-right direction of the front protruding end 21a and the rear protruding end 21b is, for example, the same.

  In the bumper portion 18, when the front and rear width of the rear side protruding end portion 21b is L1, the front and rear width of the front side protruding end portion 21a is L2, and the front and rear width of the longitudinal portion 19a in the lock insertion hole 19 is L3, L1 The total of L2 is larger than L3.

  Fixing protrusions 22 and 22 projecting forward are provided at both left and right ends of the front wall 8, and fastening holes 22 a and 22 a are formed in the fixing protrusions 22 and 22 (see FIG. 2). . Fixing portions 23 and 23 projecting forward are provided at the center portion in the left-right direction of the front wall portion 8, and fixing holes 23 a and 23 a are formed in the fixing portions 23 and 23.

  The rear wall portion 9 is provided with reinforcing portions 24, 24,. The reinforcing portions 24, 24, ... are formed in a convex shape forward with respect to other portions of the rear wall portion 9, and are provided as reinforcing ribs. By providing the reinforcing portions 24, 24, ... on the rear wall portion 9, the rear wall portion 9 is reinforced and the strength is increased.

  The rear fixing portions 15, 15,... And the lock insertion holes 19, 19 formed on the arrangement surface portion 7 are on the front side of the rear wall portion 9 where the reinforcing portions 24, 24,. Is located.

  The rear wall portion 9 is provided with an impact absorbing portion 25 (see FIG. 7). The shock absorbing portion 25 includes a front surface portion 26 protruding upward from the arrangement surface portion 7, a connecting surface portion 27 protruding rearward from the upper edge of the front surface portion 26, and a rear surface portion 28 protruding downward from the rear edge of the connecting surface portion 27. Consists of. The front surface portion 26 and the rear surface portion 28 are positioned to face each other in the front-rear direction. Fixing holes 27a and 27a are formed at both left and right ends of the connecting surface portion 27 (see FIG. 2).

  The side wall portions 10 and 10 are set to the same height as the rear wall portion 9 and are higher than the front wall portion 8. Therefore, the rear wall portion 9 and the side wall portions 10 and 10 are higher in height than the front wall portion 8, and the holding tray 6 is particularly strong in the strength of the rear wall portion 9 and the side wall portions 10 and 10. The structure is highly resistant to impact.

  The holding tray 6 configured as described above is fixed to, for example, the bottom surface portion 4a of the storage portion 4 in the storage case 2 by bolts 100, 100,... (See FIG. 3). The holding tray 6 has bolts 100, 100,..., Bolt insertion holes 13a, 13a,... Of the front side fixing parts 12, 12,. It is fixed to the bottom surface portion 4a by being inserted into 16a, 16a,.

  As described above, the battery module 3 is arranged on the holding tray 6, the lower end portion of the battery module 3 is inserted into the arrangement concave portion 6 a, and the battery module 3 is placed on the placement surface portion 11 (FIG. 3 and FIG. 3). 5). In a state where the battery module 3 is disposed on the holding tray 6, the first brackets 29 and 29 are attached to the holding tray 6 (see FIGS. 1, 2, and 5).

  The first bracket 29 is formed of a highly rigid metal material, and has a U-shaped pressing portion 30 opened downward, a fixed portion 31 and a pressing portion 30 protruding forward from a front lower end portion of the pressing portion 30. It consists of the insertion part 32 protruded from the lower end part of the rear side.

  An insertion hole 31 a is formed in the fixed portion 31.

  The inserted portion 32 is formed in a substantially semicircular arc shape convex forward. Therefore, the insertion portion 32 is formed with a concave portion 32a that is opened rearward.

  The first brackets 29 and 29 are fixed to the holding tray 6 side by side by fixing the fixed portions 31 and 31 to the fixing portions 23 and 23 with bolts 100 and 100, respectively (FIGS. 1 and 5). In the first brackets 29 and 29, the inserted portions 32 and 32 are inserted into the locking insertion holes 19 and 19, respectively, and the rear locking portions 21b and 21b are inserted into the recessed portions 32a and 32a, respectively. (See FIG. 7). At this time, the inserted portion 21 is not sandwiched by the front lock portion 20 and the rear lock portion 21 from the front and rear.

  The first brackets 29 and 29 are in a state where the pressing portions 30 and 30 press the battery module 3 from above, front and rear (see FIGS. 1 and 5). Therefore, the battery module 3 is held by the holding tray 6 while being pressed by the first brackets 29 and 29.

  In a state where the battery module 3 is disposed on the holding tray 6, the second brackets 33 and 33 are also fixed to the holding tray 6 in addition to the first brackets 29 and 29 (see FIGS. 1 and 2).

  The second bracket 33 is made of a metal material having high rigidity, and extends in the forward, rear and side (outward) directions from the holding surface portion 34 formed in a U-shape opened inward and the holding surface portion 34. And a fixed surface portion 35. Insertion holes 34a, 34a are formed in the holding surface portion 34 so as to be separated from each other in the front-rear direction, and insertion holes 35a, 35a are formed in the front and rear end portions of the fixed surface portion 35.

  The second brackets 33, 33 are fastened by bolts 100, 100,... To the fixed portions 35, 35 to both ends in the left-right direction of the front wall 8 and both ends in the left-right direction of the rear wall 9. As a result, the holding tray 6 is fixed to both left and right ends. The second brackets 33 and 33 are in a state in which the holding surface portions 34 and 34 respectively press the left and right end portions of the battery modules 3 and 3 from the front, rear and side (outside). Therefore, the battery module 3 is held by the holding tray 6 while being pressed by the second brackets 33 and 33.

  If an impact is applied from the rear to the vehicle having the on-vehicle battery 1 configured as described above due to a collision or the like, the impact is absorbed by the rear surface portion 4b of the storage portion 4 in the storage case 2. The impact on the in-vehicle battery 1 is reduced (see FIG. 8).

  Depending on the magnitude of the applied impact, the impact is then transmitted from the rear surface portion 4b of the storage portion 4 to the impact absorbing portion 25 of the holding tray 6 (see FIG. 9). At this time, the impact is received and relaxed by the impact absorbing portion 25, and the impact absorbing portion 25 is deformed.

  The shock absorbing portion 25 has a cross-sectional shape that includes a connecting surface portion 27 whose thickness direction is set in the vertical direction, a front surface portion 26 protruding from the front edge of the connecting surface portion 27, and a rear surface portion 28 protruding from the rear edge of the connecting surface portion 27. Since it is formed in a letter shape, a high shock absorbing function can be secured with a simple structure.

  Furthermore, depending on the magnitude of the impact, the impact is applied to the bumper portion 18 of the holding tray 6 via the impact absorbing portion 25 or from the rear surface portion 4b, and the rear lock portion 21 of the bumper portion 18 is displaced forward. . Accordingly, the inserted portion 32 of the first bracket 29 is pressed against the front lock portion 20 by the rear lock portion 21, and the inserted portion 32 is locked to the bumper portion 18.

  At this time, as described above, the bumper portion 18 has a total width L1 before and after the rear protruding end portion 21b and a front and rear width portion L2 of the front protruding end portion 21a that is the width L3 before and after the longitudinal portion 19a in the locking insertion hole 19. Therefore, the area of the lock insertion hole 19 is reliably reduced when an impact is applied to the rear lock portion 21, and the inserted portion 32 is securely locked to the bumper portion 18.

  As described above, in the in-vehicle battery 1, the inserted portion 32 is placed on the holding tray 6 in a state in which the holding tray 6 is impacted from the rear and the rear lock portion 21 is displaced toward the front lock portion 20. Locked.

  Therefore, when an impact from the rear is applied to the holding tray 6, the first bracket 29 is held by the holding tray 6 to be prevented from falling off the holding tray 6, and the impact is received by the first bracket 29. The battery module 3 is difficult to receive an impact and can be protected.

  The battery module 3 is also held by a pair of second brackets 33, 33 fixed to the left and right ends of the holding tray 6.

  Accordingly, in addition to the first brackets 29 and 29, the second brackets 33 and 33 also hold the state of being arranged on the holding tray 6 of the battery module 3, and when the impact from the rear is applied, the battery module 3. However, the battery module 3 can be sufficiently protected.

  Furthermore, since the fixed portion 31 and the inserted portion 32 are thicker than the placement surface portion 11, the thickness is made thicker than the placement surface portion 11 when an impact from the rear is applied to the holding tray 6. The fixed portion 31 and the inserted portion 32 receive an impact, and a high shock absorbing function of the holding tray 6 can be ensured.

  In the above, an example in which the fixed portion 31 and the insertion portion 32 protrude downward with respect to the placement surface portion 11 to increase the thickness is shown. However, the fixed portion and the insertion portion are placed on the placement surface portion. 11 may protrude upward and a stepped portion may be provided on the upper side of the mounting surface portion 11 to increase the thickness. Further, the fixed portion 31 and the insertion portion 32 may be protruded both upward and downward with respect to the placement surface portion 11 to increase the thickness.

  Moreover, although the example which provided the bumper part 18 in the center part in the left-right direction of the arrangement | positioning surface part 7 was shown above, the bumper part 18 may be provided over the whole rear-end part in the arrangement | positioning surface part 7. FIG. Good.

  Furthermore, since the rear wall portion 9 of the holding tray 6 is the same height as the side wall portions 10 and 10 and is higher than the front wall portion 8 and has a higher strength, the impact resistance against impact from the rear is improved. Is planned.

  Moreover, since the reinforcement part 24,24, ... is provided in the rear wall part 9, the impact provided to the holding tray 6 can be relieve | moderated further.

  As described above, when an impact is applied to the holding tray 6 from the rear, the applied impact is also transmitted to the rear fixing portions 15, 15,... Depending on the magnitude of the impact. The rear fixing portion 15 is fixed to the bottom surface portion 4a of the storage portion 4 by a bolt 100, and an impact relaxation hole 16b and an impact relaxation hole 16c are formed at positions before and after the bolt insertion hole 16a. Accordingly, the bolt fastening portion 16 is deformed so that the area of the rear impact relaxation hole 16c is reduced and the area of the front impact relaxation hole 16b is increased by the impact (see FIG. 10), and the fastening position of the bolt 100 is changed. It is difficult to release the fixed state with respect to the bottom surface portion 4a of the holding tray 6 by the bolt 100.

  As described above, the bolt fastening portion 16 is formed with the impact relaxation hole 16b and the impact relaxation hole 16c at positions before and after the bolt insertion hole 16a through which the bolt 100 is inserted. When applied, the holding tray 6 is deformed so that the area of the rear impact relaxation hole 16c is reduced and the area of the front impact relaxation hole 16b is increased. Accordingly, the fastening position of the bolt 100 is difficult to change, and the fixing state of the holding tray 6 with respect to the bottom surface portion 4a by the bolt 100 is difficult to be released, so that the battery module 3 is largely displaced by the impact applied to the holding tray 6 or the holding tray. Therefore, the battery module 3 can be sufficiently protected.

  Further, since the bolt fastening portion 16 is deformed and the impact is alleviated and the fastening position of the bolt 100 is difficult to change, the variation in fastening force with respect to the bottom surface portion 4b between the bolts 100, 100,. The impact on the battery module 3 can be reduced regardless of the shape or the like.

  In addition, although the example in which the bolt fastening portion 16 is deformed after the impact absorbing portion 25 is deformed is shown above, by setting the size of the opening area of the impact mitigating hole 16b and the impact mitigating hole 16c appropriately. When the impact is applied to the holding tray 6, the bolt fastening portion 16 can be deformed first, and then the impact absorbing portion 25 can be deformed.

  As described above, in the vehicle battery 1, the holding tray 6 that is disposed inside the storage case 2 and holds the battery module 3 is provided, and the placement recess 6 a in which the battery module 3 is placed in the holding tray 6. And an impact absorbing portion 25 is provided at the rear end portion of the holding tray 6.

  Therefore, when an impact is applied to the vehicle from the rear, the impact is absorbed by the impact absorbing portion 25 provided at the rear end portion of the holding tray 6, and the impact is applied to the battery module 3 disposed in the placement recess 6a. Therefore, the impact on the battery module 3 is mitigated, and the battery module 3 can be protected.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle battery, 2 ... Storage case, 3 ... Battery module, 6 ... Holding tray, 6a ... Arrangement recessed part, 11 ... Mounting surface part, 16 ... Bolt fastening part, 16a ... Bolt insertion hole, 16b ... Impact relaxation hole, 16c ... Shock mitigation hole, 19 ... Lock insertion hole, 20 ... Front lock part, 21 ... Rear lock part, 25 ... Shock absorption part, 26 ... Front part, 27 ... Connection face part, 28 ... Rear face part, 29 ... No. 1 bracket, 31 ... fixed part, 32 ... inserted part, 33 ... second bracket, 100 ... bolt

Claims (6)

A battery module having battery cells;
A storage case for storing the battery module;
A holding tray that is disposed inside the storage case and holds the battery module;
An arrangement recess in which the battery module is arranged is formed in the holding tray,
A vehicle-mounted battery in which an impact absorbing portion is provided at a rear end portion of the holding tray. The shock absorbing portion includes a connecting surface portion whose thickness direction is set in a vertical direction, a front surface portion protruding from a front edge of the connecting surface portion, and a rear surface portion protruding from a rear edge of the connecting surface portion and facing the front surface portion. The vehicle-mounted battery according to Item 1. A first bracket for holding the battery module is provided;
A lock insertion hole is formed in the holding tray,
A front part and a rear part of the lock insertion hole in the holding tray are provided as a front lock part and a rear lock part, respectively.
A fixed portion to be fixed to the holding tray is provided at a front end portion of the first bracket,
An inserted portion to be inserted into the locking insertion hole is provided at a rear end portion of the first bracket;
3. The inserted portion is locked to the holding tray in a state where an impact from the rear is applied to the holding tray and the rear lock portion is displaced in a direction approaching the front lock portion. The vehicle-mounted battery as described. The holding tray is provided with a placement surface portion on which the battery module is placed in a state where the battery module is placed in the placement recess,
The in-vehicle battery according to claim 3, wherein the fixed portion and the insertion portion are thicker than the mounting surface portion. The holding tray is provided with a bolt fastening portion that is fastened to another member by a bolt,
The bolt fastening portion is formed with a bolt insertion hole through which the bolt is inserted and an impact relaxation hole positioned before and after sandwiching the bolt insertion hole. Item 5. The vehicle battery according to Item 4. The pair of second brackets, which are fixed to both left and right ends of the holding tray and hold the battery module from the left and right, are provided. The claim 1, claim 2, claim 4, claim 5 or claim 5. Automotive battery.

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