Battery device

Abstract

To provide a battery device in which intrusion of a foreign substance through a cooling air inflow port can be inhibited.SOLUTION: A battery device includes a battery module having a battery and a housing that houses the battery, and a charging module having a charger and a casing that houses the charger. The housing includes a base on which the battery is placed. The base includes an inflow port 34 for an inflow of cooling air, an outflow port 35 for an outflow of cooling air, a first valve body 36 that opens / closes the inflow port 34, and a first urging member 37 that urges the first valve body 36 to a side where the inflow port 34 is closed. The casing has a first protrusion part 16 that establishes communication between the inside and the outside of the casing, and can be inserted into the inflow port 34. In a mounting state in which the battery module is mounted on the charging module, the first valve body 36 is pressed by the first protrusion part 16 inserted in the inflow port 34 against an urging force of the first urging member 37, whereby the inflow port 34 is opened.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a battery device. [Background technology]

[0002] Patent Document 1 discloses a storage battery device including a storage battery and a charger for charging the storage battery. The storage battery is charged in a state where a storage battery unit incorporating the storage battery is attached to a charger main body.

[0003] The battery section has a plurality of openings through which cooling air flows in, a cooling opening through which the cooling air is discharged, and an interlocking door that opens and closes the cooling opening. The interlocking door is biased by a spring in the direction that closes the cooling opening.

[0004] The charger body includes a cooling fan that sends cooling air to the battery section, an intake opening that takes in air, and a guide boss. When the battery unit is not attached to the charger body, the cooling opening is closed by the interlocking door. When the battery unit is attached to the charger body, the guide boss pushes the interlocking door toward the open side against the biasing force of the spring, opening the cooling opening. Cooling air sent from the cooling fan then flows into the charger body through the opening and is exhausted through the cooling opening. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 63-120534 Summary of the Invention [Problem to be solved by the invention]

[0006] In the storage battery device described in Patent Document 1, the cooling opening is opened and closed by an interlocking door, while the opening through which the cooling air flows is always open. Therefore, when the storage battery unit is not attached to the charger body, there is a risk that foreign matter such as water may enter the inside of the charger body through the opening. [Means for solving the problem]

[0007] A battery device for solving the above problem comprises a battery module having a battery and a housing that accommodates the battery, and a charging module having a charger and a casing that accommodates the charger, and is configured so that the battery is charged by the charger when the battery module is attached to the charging module, wherein the housing comprises a base on which the battery is placed and a cover having an opening to which the base is attached and covering the battery, the base comprises an inlet hole that allows cooling air to flow into the interior of the housing, an outlet hole that allows the cooling air to flow out to the outside of the housing, a valve body that opens and closes the inlet hole, and a biasing member that biases the valve body toward the side that closes the inlet hole, a cooling device that supplies the cooling air is provided inside the casing, and the casing has a protrusion that connects the inside and outside of the casing and can be inserted into the inlet hole, and in the attached state, the protrusion inserted into the inlet hole presses the valve body against the biasing force of the biasing member, thereby opening the inlet hole. [Brief explanation of the drawings]

[0008] [Figure 1] 1(a) and 1(b) are cross-sectional views of a battery device according to one embodiment, focusing on an inlet and an outlet. [Figure 2] 2(a) and 2(b) are perspective views of the battery device according to the embodiment. [Figure 3] 3(a) is a cross-sectional view of the charging module taken along line 3-3 in FIG. 2, and FIG. 3(b) is a plan view of the charging module according to the same embodiment. [Figure 4] FIG. 4 is an exploded perspective view of the battery module according to the embodiment. [Figure 5] FIG. 5(a) is a perspective view of a base according to the embodiment, and FIG. 5(b) is a perspective view of a battery placed on the base according to the embodiment. [Figure 6] FIG. 6(a) is a perspective view of the cover according to the embodiment, and FIG. 6(b) is a cross-sectional view taken along line 6-6 in FIG. 6(a). [Figure 7] FIG. 7 is a perspective view of the upstream flow path and its surroundings according to the embodiment. [Figure 8] FIG. 8 is a perspective view of the downstream flow path and its periphery according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, one embodiment will be described with reference to FIGS. 2 to 4, the battery device 100 includes a battery module 20 having a battery 21 and a housing 23 that houses the battery 21, and a charging module 10 having a charger 19 and a casing 11 that houses the charger 19. The battery device 100 is configured so that the battery 21 is charged by the charger 19 when the battery module 20 is attached to the charging module 10.

[0010] First, the charging module 10 will be described in detail. <Charging Module 10> As shown in FIGS. 2( a ), 3 ( a ), and 3 ( b ), the charging module 10 includes a casing 11 , a cooling device 18 , and a charger 19 .

[0011] The casing 11 comprises a bottom wall 12, a peripheral wall 13 extending upward from the outer peripheral edge of the bottom wall 12, and an upper wall 15 located between the upper end of the peripheral wall 13 and the bottom wall 12 in the vertical direction Z and facing the bottom wall 12.

[0012] The upper wall 15 is provided parallel to the bottom wall 12 at a position closer to the bottom wall 12 than the upper end of the peripheral wall 13 in the vertical direction Z. The bottom wall 12 and the top wall 15 are both rectangular plates. In the following description, the long side direction and the short side direction of the bottom wall 12 are referred to as the length direction X and the width direction Y, respectively.

[0013] An opening 14 is formed by the upper edge of the peripheral wall 13 . The upper wall 15 has a first protrusion 16 and a second protrusion 17 that protrude upward and connect the space above and the space below the upper wall 15. The first protrusion 16 and the second protrusion 17 are both cylindrical.

[0014] As shown in Fig. 3(b), the first protrusion 16 and the second protrusion 17 are arranged at an interval in the longitudinal direction X. The first protrusion 16 and the second protrusion 17 are located on one side in the width direction Y (the lower side in Fig. 3(b)).

[0015] As shown in FIGS. 3(a) and 3(b), the cooling device 18 and the charger 19 are provided between the bottom wall 12 and the top wall 15. In this embodiment, the cooling device 18 includes a fan that generates cooling air and a motor that rotates and drives the fan. The fan of the cooling device 18 is disposed directly below the first protrusion 16. The charger 19 is disposed on the other side in the width direction Y (the upper side in FIG. 3(b)). The charger 19 has a well-known configuration and includes an AC / DC converter that converts AC voltage from a power source (not shown) into high-voltage DC voltage, a DC / DC converter that converts the high-voltage DC voltage into a charging voltage, and a charging controller that controls charging of the battery 21.

[0016] Next, the battery module 20 will be described in detail. <Battery module 20> 4, the battery module 20 has a battery 21 and a housing 23 that houses the battery 21. The housing 23 includes a base 30 on which the battery 21 is placed, a cover 40 to which the base 30 is attached and that covers the battery 21, and a battery case 50 to which the base 30 is attached and that covers the cover 40.

[0017] (Battery 21) 4, the battery module 20 includes a plurality of plate-shaped batteries 21. The plurality of batteries 21 are laminated cells having the same shape and size, and are connected in series with each other.

[0018] (Base 30) As shown in FIG. 5(a), the base 30 is a plate-like member having a rectangular shape in a plan view. The base 30 includes a base main body 31 and a first base flow path section 32a and a second base flow path section 32b located on the outer periphery of the base main body 31. A plurality of base-side mounting holes 30a, 30b are provided on the outer periphery of the base 30. The base-side mounting holes 30a, 30b penetrate the base 30 in the up-down direction Z. The base-side mounting holes 30a are provided at the four corners of the base 30. The base-side mounting holes 30b are provided at the midpoints between the corners on the outer periphery of the base 30.

[0019] A plurality of storage grooves 33 that open upward are formed on the upper surface of the base body 31. The storage grooves 33 extend in the length direction X and are arranged at intervals in the width direction Y. In this embodiment, the width direction Y coincides with the width direction of the storage grooves 33.

[0020] As shown in Fig. 5(b), the base ends 22 of the plurality of batteries 21 are housed in the housing grooves 33. A gap S is provided between the batteries 21. As shown in FIG. 5( a ), the first base flow path section 32 a and the second base flow path section 32 b open upward and extend along the outer periphery of the base 30 .

[0021] The first base flow path section 32a and the second base flow path section 32b are provided on one side in the width direction Y of the outer periphery of the base 30 (the lower right side in FIG. 5(a)). The first base flow path section 32a has a portion 321 extending along the length direction X and a portion 322 extending along the width direction Y, and is L-shaped in plan view.

[0022] The second base flow path section 32b has a portion 323 extending along the length direction X and a portion 324 extending along the width direction Y, and is L-shaped in plan view. A partition 32c is provided between the first base flow path portion 32a and the second base flow path portion 32b. The first base flow path portion 32a and the second base flow path portion 32b are separated by the partition 32c.

[0023] The first base flow path portion 32a includes an inlet hole 34 that allows cooling air to flow into the inside of the housing 23, a first valve body 36 that opens and closes the inlet hole 34, and a first biasing member 37 that biases the first valve body 36 toward the side that closes the inlet hole 34.

[0024] 1(a) and 5(a), the inlet hole 34 is provided in a portion 321 of the first base flow path portion 32a that extends along the longitudinal direction X. The inlet hole 34 penetrates the base 30 in the up-down direction Z.

[0025] The first valve body 36 is located above the first base flow path portion 32a. The first valve body 36 is located closer to the partition portion 32c than the inlet hole 34 in the longitudinal direction X, and is provided rotatable about an axis C1 extending in the width direction Y.

[0026] The first biasing member 37 is, for example, a torsion spring. As shown in Figure 5(a), the second base flow path portion 32b includes an outlet hole 35 that allows cooling air to flow out of the housing 23, a second valve body 38 that opens and closes the outlet hole 35, and a second biasing member 39 that biases the second valve body 38 toward the side that closes the outlet hole 35.

[0027] 1(a) and 5(a), the outlet hole 35 is provided in a portion 323 of the second base flow path portion 32b that extends along the longitudinal direction X. The outlet hole 35 penetrates the base 30 in the up-down direction Z.

[0028] The second valve body 38 is located above the second base flow path portion 32b. The second valve body 38 is located farther from the partition portion 32c in the longitudinal direction X than the outflow hole 35, and is provided rotatable about an axis C2 extending in the width direction Y.

[0029] The second biasing member 39 is, for example, a torsion spring. (Cover 40) As shown in FIG. 6( a ), the cover 40 includes a cover main body 41 and a cover flow path portion 47 .

[0030] The cover body 41 has a rectangular top wall 41a and a peripheral wall 41b extending downward from the outer periphery of the top wall 41a. An opening 46 is formed by the edge of the lower end of the peripheral wall 41b. The peripheral wall 41b includes a first side wall 42 and a second side wall 43 that face each other in the longitudinal direction X, and a third side wall 44 and a fourth side wall 45 that face each other in the width direction Y. The first side wall 42 is located on the side in the longitudinal direction X where the first base flow path section 32a is provided (the left side in FIG. 6(a)). The second side wall 43 is located on the side in the longitudinal direction X where the second base flow path section 32b is provided (the right side in FIG. 6(a)). The third side wall 44 is located on one side in the width direction Y (the lower right side in FIG. 6(a)). The fourth side wall 45 is located on the other side in the width direction Y (the upper left side in FIG. 6(a)).

[0031] A plurality of first through holes 42a are provided in the lower part of the first side wall 42, penetrating the inside and outside of the first side wall 42. The plurality of first through holes 42a extend in the up-down direction Z and are arranged at intervals from one another in the width direction Y. The first side wall 42 is also provided with a first outer wall 42b that protrudes from the outer surface of the first side wall 42 and covers the portion of the outer surface of the first side wall 42 where the first through holes 42a are provided. The first outer wall 42b extends in the up-down direction Z from a position above the first through holes 42a to the same position as the lower end of the first side wall 42.

[0032] As shown in FIG. 6(b), a space S1 is formed between the first side wall 42 and the first outer wall 42b. As shown in FIG. 6(a), a plurality of second through holes 43a are provided in an upper portion of the second side wall 43, penetrating the second side wall 43 from the inside to the outside. The plurality of second through holes 43a extend in the up-down direction Z and are arranged at intervals from one another in the width direction Y. The second side wall 43 is also provided with a second outer wall 43b that protrudes from the outer surface of the second side wall 43 and covers the portion of the outer surface of the second side wall 43 where the second through holes 43a are provided. The second outer wall 43b extends in the up-down direction Z from a position above the second through holes 43a to the same position as the lower end of the second side wall 43.

[0033] As shown in FIG. 6(b), a space S2 is formed between the second side wall 43 and the second outer wall 43b. As shown in FIG. 6(a), the cover flow path portion 47 protrudes from the outer surface of the peripheral wall 41b. The cover flow path portion 47 has a flat plate shape and is provided at the lower end of the peripheral wall 41b. The cover flow path portion 47 has a portion 47a protruding from the outer surface of the third side wall 44 and extending along the length direction X, a portion 47b protruding from the outer surface of the first side wall 42 and extending along the width direction Y, and a portion 47c protruding from the outer surface of the second side wall 43 and extending along the width direction Y. The cover flow path portion 47 has a U-shape in a plan view. Cover-side mounting holes 40a and 40b are provided in the cover flow path portion 47 at positions corresponding to the base-side mounting holes 30a and 30b. The cover-side mounting holes 40a and 40b penetrate the cover flow path portion 47 in the up-down direction Z.

[0034] As shown in Figures 5(a), 6(a), 7, and 8, the base 30 is attached to the opening 46 of the cover 40 by threading a screw 70 from above into the base-side mounting hole 30b and the cover-side mounting hole 40b.

[0035] The base body 31 faces the opening 46 of the cover 40. The cover flow path portion 47 covers the first base flow path portion 32a and the second base flow path portion 32b from above. 6(b) and 7, an upstream flow path 60 through which cooling air flows is formed by the first base flow path portion 32a and the cover flow path portion 47. In addition, a space S1 between the first side wall 42 and the first outer wall 42b also forms part of the upstream flow path 60. The upstream flow path 60 is connected to the first through-hole 42a.

[0036] 6(b) and 8, a downstream flow path 61 through which cooling air flows is formed by the second base flow path portion 32b and the cover flow path portion 47. In addition, a space S2 between the second side wall 43 and the second outer wall 43b also forms part of the downstream flow path 61. The downstream flow path 61 is connected to the second through-hole 43a.

[0037] (battery case 50) 4, the battery case 50 covers the top wall 41a and peripheral wall 41b of the cover 40 from the outside. The battery case 50 includes a top wall 51 that covers the top wall 41a, and a peripheral wall 52 that extends downward from the outer periphery of the top wall 51 and covers the peripheral wall 41b. An arched grip portion 53 is provided on the upper surface of the top wall 51.

[0038] The cover 40 is housed in the battery case 50 through the bottom opening of the battery case 50. In this state, screws (not shown) are inserted from below through the base-side mounting holes 30a and the cover-side mounting holes 40a and screwed into female threads (not shown) of the battery case 50, thereby attaching the cover 40 and the base 30 to the battery case 50.

[0039] The first base flow path portion 32a in this embodiment corresponds to the base flow path portion described in the "Summary of the Invention." The opening 46 in this embodiment corresponds to the opening described in the "Summary of the Invention." Furthermore, the first through hole 42a in this embodiment corresponds to the through hole described in the "Summary of the Invention."

[0040] Next, the operation of this embodiment will be described. First, as shown in FIG. 4, the battery 21 is placed on the base 30 by accommodating the base end 22 of the battery 21 in the accommodating groove 33 of the base 30, and the cover 40 and the battery case 50 are attached to the base 30 to form the battery module 20.

[0041] As shown in FIG. 1(a), in the non-attached state where the battery module 20 is not attached to the charging module 10, the first valve body 36 and the second valve body 38 are biased by the first biasing member 37 and the second biasing member 39, thereby closing the inlet hole 34 and the outlet hole 35.

[0042] 2(a) and 2(b), the battery module 20 is inserted into the opening 14 of the casing 11 to attach the battery module 20 to the charging module 10, thereby establishing an attached state. This electrically connects the terminals of the battery 21 and the terminals of the charger 19 (both not shown), thereby charging the battery 21.

[0043] 1(b), the first protrusion 16 and the second protrusion 17 are inserted into the inlet hole 34 and the outlet hole 35, respectively. The first protrusion 16 inserted into the inlet hole 34 presses the first valve body 36 against the biasing force of the first biasing member 37, thereby opening the inlet hole 34. The second protrusion 17 inserted into the outlet hole 35 presses the second valve body 38 against the biasing force of the second biasing member 39, thereby opening the outlet hole 35.

[0044] 1(b) and 7, the cooling air supplied from the cooling device 18 flows into the upstream flow passage 60 through the first protrusion 16 inserted into the inlet hole . 7, the cooling air that has flowed into the upstream flow path 60 passes through the first through-hole 42a of the first side wall 42 and flows into the inside of the cover 40. The cooling air flows inside the cover 40 toward the second through-hole 43a of the second side wall 43. At this time, the battery 21 is cooled by the cooling air.

[0045] As shown by arrow C in FIG. 8, the cooling air flows into the downstream flow passage 61 through the second through-holes 43a of the second side wall 43. As shown by arrow D in FIGS. 1(b) and 8, the cooling air that has flowed into the downstream flow passage 61 flows into the inside of the casing 11 through the second protrusion 17 inserted into the outlet hole .

[0046] Next, the effects of this embodiment will be described. (1) In the attached state, the inlet hole 34 is open, and in the detached state, the inlet hole 34 is closed by the first valve body 36.

[0047] According to this configuration, the above-mentioned effect is achieved, and therefore, in the unattached state, foreign matter can be prevented from entering the upstream flow passage 60 through the inlet hole 34. (2) In the attached state, the outflow hole 35 is open, and in the detached state, the outflow hole 35 is closed by the second valve body 38.

[0048] According to this configuration, the above-mentioned effect is achieved, and therefore, in the non-attached state, it is possible to prevent foreign matter from entering the downstream flow path 61 through the outflow hole 35. (3) The battery 21 is a plurality of plate-shaped laminate cells, and is arranged with a gap S therebetween in the receiving groove 33 of the base 30 .

[0049] According to this configuration, cooling air enters the gaps S between the batteries 21, so that the batteries 21 can be cooled efficiently. (4) The first base flow path portion 32a and the cover flow path portion 47 form an upstream flow path 60, and the second base flow path portion 32b and the cover flow path portion 47 form a downstream flow path 61. The first side wall 42 is provided with a first through hole 42a penetrating the first side wall 42 from the inside to the outside, and the second side wall 43 is provided with a second through hole 43a penetrating the second side wall 43 from the inside to the outside.

[0050] According to this configuration, the cooling air that flows into the upstream flow passage 60 through the inlet hole 34 provided in the base 30 flows into the inside of the cover 40 through the first through hole 42a. Therefore, even if foreign matter such as water enters the upstream flow passage 60 through the inlet hole 34, the foreign matter can be prevented from entering the inside of the cover 40 through the first through hole 42a. Similarly, even if foreign matter such as water enters the downstream flow passage 61 through the outlet hole 35, the foreign matter can be prevented from entering the inside of the cover 40 through the second through hole 43a.

[0051] Furthermore, according to the above configuration, the upstream flow path 60 is formed by the first base flow path portion 32a provided in the base 30 and the cover flow path portion 47 provided in the cover 40. The downstream flow path 61 is formed by the second base flow path portion 32b provided in the base 30 and the cover flow path portion 47 provided in the cover 40. Therefore, there is no need to provide separate piping to form the upstream flow path 60 and the downstream flow path 61. This makes it possible to reduce the number of parts.

[0052] (5) The first outer wall 42b covers a portion of the outer surface of the first side wall 42 where the first through-hole 42a is provided, and the second outer wall 43b covers a portion of the outer surface of the second side wall 43 where the second through-hole 43a is provided. A space S1 that constitutes a portion of the upstream flow path 60 is formed between the first side wall 42 and the first outer wall 42b, and a space S2 that constitutes a portion of the downstream flow path 61 is formed between the second side wall 43 and the second outer wall 43b.

[0053] According to this configuration, the configuration of the base 30 can be simplified. <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0054] The cover 40 may not have the first outer wall 42b. For example, an eave portion may be provided on the outer surface of the first side wall 42, protruding in the longitudinal direction X from a portion above the first through-hole 42a. The base 30 may then be provided with an outer wall that extends upward to the position of the eave portion, thereby covering the portion of the outer surface of the first side wall 42 where the first through-hole 42a is provided. The cover 40 may also not have the second outer wall 43b. In this case, the eave portion and the outer wall may be provided in the same manner as described above.

[0055] The first outer wall 42b may be omitted. In this case, a communicating portion may be provided in the portion of the cover flow path section 47 that constitutes the upstream flow path 60, and a separate pipe may be provided to connect the communicating portion and the first through hole 42a. The second outer wall 43b may be omitted. In this case, similar to the above, a communicating portion may be provided in the portion of the cover flow path section 47 that constitutes the downstream flow path 61, and a separate pipe may be provided to connect the communicating portion and the second through hole 43a.

[0056] The upstream flow path 60, the downstream flow path 61, the first through hole 42a, and the second through hole 43a may be omitted, and the inlet hole 34 and the outlet hole 35 may be provided in the base body 31. The battery 21 is not limited to a plate-shaped laminate cell. For example, the battery 21 may be cylindrical, and the shape of the portion that houses the battery 21 may be changed appropriately to match the shape of the battery 21.

[0057] The second valve body 38, the second biasing member 39, and the second protrusion 17 may be omitted. The number of first through holes 42a and second through holes 43a can be changed as needed. Furthermore, the first through holes 42a and second through holes 43a are not limited to shapes extending in the up-down direction Z, but may also be shapes extending in the width direction Y.

[0058] <Additional Notes> Each of the above embodiments includes the configurations described in the following supplementary notes. [Appendix 1] A battery device comprising: a battery module having a battery and a housing that accommodates the battery; and a charging module having a charger and a casing that accommodates the charger; wherein the battery module is attached to the charging module and the charger charges the battery when the battery module is attached to the charging module; the housing comprises a base on which the battery is placed; and a cover having an opening to which the base is attached and covering the battery; the base comprises an inlet hole that allows cooling air to flow into the housing, an outlet hole that allows the cooling air to flow out to the outside of the housing, a valve body that opens and closes the inlet hole, and a biasing member that biases the valve body toward the side that closes the inlet hole; the casing is provided inside with a cooling device that supplies the cooling air; the casing has a protrusion that communicates between the inside and outside of the casing and can be inserted into the inlet hole; and in the attached state, the protrusion inserted into the inlet hole presses the valve body against the biasing force of the biasing member, thereby opening the inlet hole.

[0059] [Appendix 2] When the valve body, the biasing member, and the protrusion are a first valve body, a first biasing member, and a first protrusion, the base comprises a second valve body that opens and closes the outflow hole, and a second biasing member that biases the second valve body in a direction that closes the outflow hole, the casing has a second protrusion that connects the inside and outside of the casing and can be inserted into the outflow hole, and in the attached state, the second protrusion inserted into the outflow hole presses the valve body against the biasing force of the second biasing member, thereby opening the outflow hole. [Appendix 1] Battery device.

[0060] [Appendix 3] A battery device as described in [Appendix 1] or [Appendix 2], comprising a plurality of plate-shaped batteries, the base having a plurality of storage grooves for accommodating the base ends of the plurality of batteries, the plurality of storage grooves being aligned in the width direction of the storage grooves, and gaps being provided between the batteries.

[0061] [Appendix 4] The base comprises a base main body facing the opening and a base flow path portion having the inlet hole, and the cover comprises a cover main body having a peripheral wall that forms the opening and a cover flow path portion that protrudes from the outer surface of the peripheral wall and covers the base flow path portion, and an upstream flow path through which the cooling air flows is formed by the base flow path portion and the cover flow path portion, and the peripheral wall is provided with a through hole that penetrates the inside and outside of the peripheral wall, and the upstream flow path is connected to the through hole. A battery device described in any one of [Appendix 1] to [Appendix 3].

[0062] [Appendix 5] The cover body has the peripheral wall and an outer wall that covers the portion of the outer surface of the peripheral wall where the through hole is provided, and a space that forms part of the upstream flow path is formed between the peripheral wall and the outer wall. [Appendix 4] A battery device as described in [Explanation of symbols]

[0063] 10...Charging module 11...Casing 12...Bottom wall 13...Peripheral wall 14...Opening 15...Upper wall 16...First protrusion 17...Second protrusion 18…Cooling device 19…Charger 20...Battery module 21...Battery 22...Proximal end 23…Housing 30...Bass 30a, 30b...Base side mounting holes 31...Base body 32a...first base flow path section 32b...second base flow path section 32c...Divider 33...Storage groove 34...Inflow hole 35...Outflow hole 36...First valve body 37...First biasing member 38...Second valve body 39...Second biasing member 40...Cover 40a, 40b...Cover side mounting holes 41...Cover body 41a...Top wall 41b...peripheral wall 42...First side wall 42a...1st through hole 42b...First outer wall 43...Second side wall 43a...Second through hole 43b…Second outer wall 44...Third side wall 45...Fourth side wall 46...Opening 47...Cover flow path section 50...Battery case 51...Top wall 52...Peripheral wall 53...Gripping part 60...Upstream flow path 61...Downstream flow path 70...Screw 100...Battery device C1,C2…axis line S...gap S1,S2…space

Claims

1. A battery device comprising: a battery module having a battery and a housing that houses the battery; and a charging module having a charger and a casing that houses the charger, wherein the battery is charged by the charger when the battery module is attached to the charging module, the housing includes a base on which the battery is placed, and a cover that has an opening to which the base is attached and that covers the battery; the base includes an inlet hole for introducing cooling air into the housing, an outlet hole for discharging the cooling air to the outside of the housing, a valve body for opening and closing the inlet hole, and a biasing member for biasing the valve body toward a side where the inlet hole is closed, a cooling device that supplies the cooling air is provided inside the casing; the casing has a protrusion that communicates between the inside and outside of the casing and can be inserted into the inlet hole, In the attached state, the protrusion inserted into the inlet hole presses the valve body against the biasing force of the biasing member, thereby opening the inlet hole. Battery device.

2. When the valve body, the biasing member, and the protrusion are defined as a first valve body, a first biasing member, and a first protrusion, the base includes a second valve body that opens and closes the outflow hole, and a second biasing member that biases the second valve body toward a side that closes the outflow hole, the casing has a second protrusion that communicates between the inside and outside of the casing and can be inserted into the outflow hole; In the attached state, the second protrusion inserted into the outflow hole presses the valve body against the biasing force of the second biasing member, thereby opening the outflow hole. The battery device according to claim 1 .

3. A plurality of the plate-shaped batteries are provided, the base has a plurality of accommodation grooves that accommodate base ends of the plurality of batteries; The plurality of storage grooves are aligned in the width direction of the storage grooves, A gap is provided between the batteries. The battery device according to claim 2 .

4. the base includes a base main body facing the opening and a base flow path portion having the inlet hole, The cover includes a cover body having a peripheral wall that forms the opening, and a cover flow path portion that protrudes from an outer surface of the peripheral wall and covers the base flow path portion, the base flow path portion and the cover flow path portion form an upstream flow path through which the cooling air flows, The peripheral wall is provided with a through hole that penetrates the peripheral wall from the inside to the outside, The upstream flow path is connected to the through hole. The battery device according to any one of claims 1 to 3.

5. the cover body includes the peripheral wall and an outer wall that covers a portion of the outer surface of the peripheral wall where the through hole is provided, A space that constitutes a part of the upstream flow path is formed between the peripheral wall and the outer wall. The battery device according to claim 4.

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