Sodium battery pack

Abstract

The utility model discloses a sodium battery pack and relates to the technical field of batteries. The sodium battery pack comprises a shell and a battery cell assembly, the shell is provided with a first concave part and a second concave part, and the first concave part and the second concave part are provided with a positive electrode output terminal and a negative electrode output terminal respectively; and the battery core assembly is arranged in the shell and is electrically connected with the positive electrode output terminal and the negative electrode output terminal respectively. According to the utility model, the first concave part and the second concave part are arranged on the shell to respectively protect the positive electrode output terminal and the negative electrode output terminal in the first concave part and the second concave part, so that the problem that the protruding output terminals are easy to damage is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a sodium battery pack. Background Technology

[0002] Sodium-ion batteries are rechargeable batteries that primarily function by the movement of sodium ions between the positive and negative electrodes, similar to the working principle of lithium-ion batteries. Compared to lithium-ion batteries, sodium-ion batteries are much cheaper and can be used as an alternative.

[0003] In existing sodium-ion batteries, multiple sodium-ion battery cells are usually connected in series and parallel and placed in corresponding casings to form a sodium battery pack. Protruding output terminals are set on the casings for charging and discharging. However, without other protective measures, the protruding output terminals are easily bent or even damaged by external forces, causing the sodium battery pack to become unusable. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a sodium battery pack to solve the problem that the protruding output terminals are easily damaged.

[0005] According to one aspect of the present invention, a sodium battery pack is provided, comprising:

[0006] The housing has a first recess and a second recess, and the first recess and the second recess are respectively provided with a positive output terminal and a negative output terminal;

[0007] A battery cell assembly is installed inside the housing and is electrically connected to the positive output terminal and the negative output terminal, respectively.

[0008] The sodium battery pack of this invention protects the positive and negative output terminals located within the first and second recesses on the casing, respectively, thereby solving the problem of easily damaged protruding output terminals.

[0009] In some embodiments, the first recess and the second recess are located at opposite ends of the length of the housing.

[0010] In some embodiments, the first recess and the second recess are also located at the intersection of one end face in the length direction of the housing and one end face in the width direction of the housing.

[0011] In some embodiments, the positive output terminal and the negative output terminal extend along the width direction of the housing and do not protrude from one end face of the housing in the width direction.

[0012] In some embodiments, the housing includes:

[0013] The upper housing is provided with a first connecting portion;

[0014] The lower housing is provided with a first mating part, and the lower housing is detachably connected to the upper housing through the mating of the first mating part and the first connecting part.

[0015] In some embodiments, a seal is provided between the upper housing and the lower housing.

[0016] In some embodiments, the cell assembly includes:

[0017] Multiple battery cells, wherein the multiple battery cells are connected in parallel and / or in series;

[0018] The upper fixing frame is provided with a second mating part and a plurality of first fixing slots, and the first ends of the plurality of battery cells are respectively located in the corresponding first fixing slots;

[0019] The lower fixing frame is provided with a third mating part and a plurality of second fixing slots, and the second ends of the plurality of battery cells are respectively located in the corresponding second fixing slots;

[0020] A fixing plate is provided with a second connecting part and a third connecting part. The fixing plate is detachably connected to the upper fixing frame through the cooperation of the second connecting part and the second mating part, and is detachably connected to the lower fixing frame through the cooperation of the third connecting part and the third mating part.

[0021] In some embodiments, the first end of the battery cell has a first electrode, and the second end of the battery cell has a second electrode;

[0022] The first fixing groove has a first through hole, and the first electrode protrudes from the first through hole;

[0023] The second fixing groove has a second through hole, and the second electrode protrudes from the second through hole.

[0024] In some embodiments, the upper fixing frame is provided with a fourth connecting portion, and the lower housing is provided with a fourth mating portion. The upper fixing frame is detachably connected to the lower housing through the mating of the fourth connecting portion and the fourth mating portion; and / or

[0025] The lower fixing frame is provided with a limiting groove, and the lower housing is provided with a limiting part. The lower fixing frame is limited by the cooperation of the limiting groove and the limiting part.

[0026] In some embodiments, the housing is further provided with a communication interface, and / or a vent valve, and / or multiple mounting parts.

[0027] Compared with the prior art, the sodium battery pack of this utility model protects the positive output terminal and the negative output terminal located in the first recess and the second recess on the shell, respectively, so as to solve the problem that the protruding output terminal is easily damaged. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a sodium battery pack according to one embodiment of the present invention.

[0029] Figure 2 This is an exploded view of a sodium battery pack according to one embodiment of the present invention;

[0030] Figure 3 This is a partial exploded view of a battery cell assembly according to one embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the overall structure of the upper fixing frame according to one embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the overall structure of the lower fixing frame according to one embodiment of the present utility model;

[0033] Figure 6 This is a schematic diagram of the overall structure of the battery cell according to one embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the overall structure of the lower shell according to one embodiment of the present invention.

[0035] Reference numerals: Housing 100, Receiving cavity 110, Upper housing 120, Communication interface 121, Vent valve 122, First recess 123, Second recess 124, Positive output terminal 125, Negative output terminal 126, First connecting part 127, Lower housing 130, First mating part 131, Mounting part 132, Fourth mating part 133, Limiting part 134, Seal 140, Battery cell assembly 200, Battery cell 210, First electrode 211, Upper fixing frame 220, Second mating part 221, First fixing groove 222, First through hole 2221, Fourth connecting part 223, Lower fixing frame 230, Third mating part 231, Second fixing groove 232, Second through hole 2321, Limiting groove 233, Fixing plate 240, Second connecting part 241, Third connecting part 242. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings.

[0037] According to one aspect of this utility model Figure 1-7 A sodium battery pack according to one embodiment of the present invention is schematically shown. For example... Figure 1-7 As shown, the sodium battery pack includes a housing 100 and a cell assembly 200 disposed within the housing 100.

[0038] like Figure 1 and Figure 2 As shown, the housing 100 is generally formed as a cuboid. The housing 100 has a length direction A, a width direction B and a height direction C that are perpendicular to each other. The housing 100 has a receiving cavity 110 for accommodating the battery cell assembly 200. The housing 100 includes an upper housing 120 and a lower housing 130. The interiors of the upper housing 120 and the lower housing 130 together form the receiving cavity 110.

[0039] like Figure 1 and Figure 2 As shown, the upper housing 120 of the housing 100 is provided with a communication interface 121 at one end in the height direction C. The communication interface 121 is used to communicate with external devices. The upper housing 120 of the housing 100 is also provided with a vent valve 122 at one end in the height direction C. The vent valve 122 is used to balance the pressure difference between the inside and outside of the housing 100, prevent the battery from exploding due to excessive pressure, and also help the battery to operate safely and stably.

[0040] like Figure 1 and Figure 2 As shown, the upper shell 120 of the housing 100 is provided with a first recess 123 and a second recess 124. The first recess 123 and the second recess 124 are respectively provided with a positive output terminal 125 and a negative output terminal 126. Specifically, the first recess 123 and the second recess 124 are respectively located at both ends in the length direction A of the housing 100. The first recess 123 and the second recess 124 are also respectively located at the intersection of the two end faces in the length direction A of the housing 100 and one end face in the width direction B of the housing 100. The positive output terminal 125 and the negative output terminal 126 extend along the width direction B of the housing 100 and do not protrude from one end face in the width direction B of the housing 100.

[0041] like Figure 1 , Figure 2 and Figure 7 As shown, the lower housing 130 of the housing 100 has multiple mounting portions 132 at both ends in the length direction A. The multiple mounting portions 132 can be multiple M6 screw holes, including Φ6.5 round holes, 6.5*9 slotted holes, Φ9 round holes, etc., which can facilitate fine-tuning by the user during installation.

[0042] like Figure 1 and Figure 2As shown, the upper housing 120 is provided with a first connecting part 127, and the lower housing 130 is provided with a first mating part 131. The lower housing 130 is detachably connected to the upper housing 120 through the mating part 131 and the first connecting part 127. Specifically, the first connecting part 127 includes multiple through holes provided at the four corners of the upper housing 120 and extending along the height direction C, and screws installed in the multiple through holes. The first mating part 131 includes multiple screw holes provided at the four corners of the lower housing 130 and extending along the height direction C. The detachable connection is formed by screwing the screws in the multiple through holes on the upper housing 120 into the multiple screw holes on the lower housing 130. In addition, when the upper housing 120 and the lower housing 130 are connected, a sealing member 140 can be provided between the upper housing 120 and the lower housing 130 to increase the sealing performance.

[0043] like Figure 1 , Figure 2 and Figure 6 As shown, the cell assembly 200 is installed in the receiving cavity 110 of the housing 100 and is electrically connected to the positive output terminal 125 and the negative output terminal 126 respectively. Specifically, the cell assembly 200 includes multiple cells 210, an upper fixing frame 220, a lower fixing frame 230 and a fixing plate 240. The multiple cells 210 can be connected in parallel and / or in series, such as four cells 210 connected in series to form a 4S1P battery pack, or four cells 210 connected in parallel to form a 1S4P battery pack. Of course, four cells 210 can also be connected in series in pairs and then in parallel to form a 2S2P battery pack.

[0044] like Figure 2 , Figure 3 and Figure 4 As shown, the upper fixing frame 220 is provided with a second mating part 221 and a plurality of first fixing grooves 222, and the first ends of the plurality of battery cells 210 are respectively located in the corresponding first fixing grooves 222; specifically, the second mating part 221 includes a plurality of screw holes provided on the upper fixing frame 220 and extending along the width direction B.

[0045] like Figure 2 , Figure 3 and Figure 5 As shown, the lower fixing frame 230 is provided with a third mating part 231 and a plurality of second fixing slots 232, and the second ends of the plurality of battery cells 210 are respectively located in the corresponding second fixing slots 232; specifically, the third mating part 231 includes a plurality of screw holes provided on the lower fixing frame 230 and extending along the width direction B.

[0046] like Figure 2 and Figure 3As shown, the fixing plate 240 is provided with a second connecting part 241 and a third connecting part 242. The fixing plate 240 is detachably connected to the upper fixing frame 220 through the cooperation of the second connecting part 241 and the second mating part 221, and is detachably connected to the lower fixing frame 230 through the cooperation of the third connecting part 242 and the third mating part 231. Specifically, the second connecting part 241 and the third connecting part 242 respectively include a plurality of through holes provided on the fixing plate 240 and extending along the width direction B, and screws installed in the plurality of through holes. By screwing the screws in the plurality of through holes on the fixing plate 240 into the plurality of screw holes on the upper fixing frame 220, a detachable connection is formed with the upper fixing frame 220, and by screwing them into the plurality of screw holes on the lower fixing frame 230, a detachable connection is formed with the lower fixing frame 230.

[0047] Furthermore, such as Figure 4 , Figure 5 and Figure 6 As shown, the first end of the battery cell 210 has a first electrode 211, the second end of the battery cell 210 has a second electrode (not shown), the first fixing groove 222 has a first through hole 2221, and the first electrode 211 protrudes from the first through hole 2221; the second fixing groove 232 has a second through hole 2321, and the second electrode protrudes from the second through hole 2321.

[0048] like Figure 2 , Figure 4 and Figure 7 As shown, the upper fixing frame 220 is provided with a fourth connecting part 223, and the lower housing 130 is provided with a fourth mating part 133. The upper fixing frame 220 is detachably connected to the lower housing 130 through the mating of the fourth connecting part 223 and the fourth mating part 133. Specifically, the fourth connecting part 223 includes multiple through holes provided on the upper fixing frame 220 and extending along the height direction C, and screws installed in the multiple through holes. The fourth mating part 133 includes multiple screw holes provided on the lower housing 130 and extending along the height direction C. By screwing the screws in the multiple through holes on the upper fixing frame 220 into the multiple screw holes on the lower housing 130, a detachable connection is formed with the lower housing 130.

[0049] like Figure 5 and Figure 7As shown, the lower fixing frame 230 is provided with a limiting groove 233, and the lower housing 130 is provided with a limiting part 134. The lower fixing frame 230 is limited by the cooperation of the limiting groove 233 and the limiting part 134. Specifically, the lower fixing frame 230 is provided with a plurality of limiting grooves 233 on the end face of the lower housing 130 along the height direction C, and the lower housing 130 is provided with a plurality of limiting parts 134 that cooperate with the limiting grooves 233 on the inner surface of the lower fixing frame 230 along the height direction C. The lower fixing frame 230 is limited in the length direction A and / or the width direction B by the cooperation of the limiting grooves 233 and the limiting parts 134, so as to prevent the lower fixing frame 230 from moving in the length direction A and / or the width direction B.

[0050] The sodium battery pack of this utility model protects the positive output terminal 125 and the negative output terminal 126 located in the first recess 123 and the second recess 124 respectively on the housing 100, thereby solving the problem that the protruding output terminals are easily damaged.

[0051] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A sodium battery pack, characterized in that, include: The housing has a first recess and a second recess, and the first recess and the second recess are respectively provided with a positive output terminal and a negative output terminal; the first recess and the second recess are respectively located at both ends in the length direction of the housing; the first recess and the second recess are also respectively located at the intersection of the two end faces in the length direction of the housing with one end face in the width direction of the housing; the positive output terminal and the negative output terminal extend along the width direction of the housing and do not protrude from one end face in the width direction of the housing; A battery cell assembly is installed inside the housing and is electrically connected to the positive output terminal and the negative output terminal, respectively.

2. The sodium battery pack according to claim 1, characterized in that, The housing includes: The upper housing is provided with a first connecting portion; The lower housing is provided with a first mating part, and the lower housing is detachably connected to the upper housing through the mating of the first mating part and the first connecting part.

3. The sodium battery pack according to claim 2, characterized in that, A sealing element is provided between the upper housing and the lower housing.

4. The sodium battery pack according to claim 2, characterized in that, The battery cell assembly includes: Multiple battery cells, wherein the multiple battery cells are connected in parallel and / or in series; The upper fixing frame is provided with a second mating part and a plurality of first fixing slots, and the first ends of the plurality of battery cells are respectively located in the corresponding first fixing slots; The lower fixing frame is provided with a third mating part and a plurality of second fixing slots, and the second ends of the plurality of battery cells are respectively located in the corresponding second fixing slots; A fixing plate is provided with a second connecting part and a third connecting part. The fixing plate is detachably connected to the upper fixing frame through the cooperation of the second connecting part and the second mating part, and is detachably connected to the lower fixing frame through the cooperation of the third connecting part and the third mating part.

5. The sodium battery pack according to claim 4, characterized in that, The first end of the battery cell has a first electrode, and the second end of the battery cell has a second electrode; The first fixing groove has a first through hole, and the first electrode protrudes from the first through hole; The second fixing groove has a second through hole, and the second electrode protrudes from the second through hole.

6. The sodium battery pack according to claim 4, characterized in that, The upper fixing frame is provided with a fourth connecting part, and the lower housing is provided with a fourth mating part. The upper fixing frame is detachably connected to the lower housing through the mating of the fourth connecting part and the fourth mating part; and / or The lower fixing frame is provided with a limiting groove, and the lower housing is provided with a limiting part. The lower fixing frame is limited by the cooperation of the limiting groove and the limiting part.

7. The sodium battery pack according to claim 1, characterized in that, The housing is also provided with a communication interface, and / or a vent valve, and / or multiple mounting parts.

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