Battery pack shell and battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack shell and a battery pack. The battery pack shell comprises a shell body and a protection circuit module, the protection circuit module comprises a protection plate and a connector arranged on the plate surface of the protection plate; the shell body is provided with a connector jack, the shell body is provided with a first limiting piece at the connector jack, the first limiting piece is provided with a limiting groove, and the connector is adaptively arranged in the limiting groove; a second limiting piece is arranged in the shell body, the second limiting piece comprises a first stopping part, the first stopping part and the first limiting piece are arranged in a spaced mode in the first direction, and the protection plate is arranged between the first limiting piece and the first stopping part. The battery pack comprises the battery pack shell. According to the battery pack shell and the battery pack, when the protection circuit module is mounted on the shell body, the connector is used as an assembly reference, and the connector is accurately positioned through the first limiting piece, so that the mounting precision, stability and consistency of the connector can be ensured.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery pack housing and a battery pack. Background Art

[0002] There is an increasing demand for blind-mating connector designs for all kinds of products. Specifically, the mating positions of the male and female connectors are out of sight of the human eye, or the PINs for mating the male and female connectors are blocked by other components, so the only way to install the connector into the product is blind-mating at an approximate position.

[0003] At the same time, the requirements for the position accuracy and stability of the connector on the product after assembly are becoming increasingly higher. Therefore, how to improve the position accuracy and stability of the connector assembly in the scenario of blind insertion of the connector is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the present application is to provide a battery pack housing and a battery pack, so as to solve to a certain extent the technical problem in the prior art of how to improve the position accuracy and stability of connector assembly in the use scenario of blind insertion of the connector.

[0005] The present application provides a battery pack housing, comprising a housing body and a protection circuit module;

[0006] The protection circuit module includes a protection board and a connector disposed on a board surface of the protection board;

[0007] The housing body is provided with a connector jack, the housing body is provided with a first limiting member at the connector jack, the first limiting member is provided with a limiting groove, and the connector is adaptively arranged in the limiting groove;

[0008] A second limiter is disposed in the shell body, the second limiter includes a first stop portion, the first stop portion and the first limiter are spaced apart along the first direction, and the protection plate is disposed between the first limiter and the first stop portion.

[0009] In the above technical solution, further, the shell body includes a first shell portion and a second shell portion covering each other along a second direction, and the first direction and the second direction intersect;

[0010] The first limiting member and the second limiting member are both arranged on the first shell portion, and the battery pack housing further comprises a first positioning member arranged on the second shell portion;

[0011] The connector is provided with a second positioning portion, and the first positioning member is adaptively plugged into the second positioning portion along the third direction.

[0012] In any of the above technical solutions, further, the battery pack housing further includes a correcting member disposed on the second shell portion;

[0013] The correcting member abuts against a plate surface of the protection plate that is away from the connector in the first direction.

[0014] In any of the above technical solutions, further, a card slot is provided at an end of the protection plate facing the second shell portion along the second direction;

[0015] The battery pack shell further includes a protrusion disposed on the second shell portion, the protrusion is engaged with the card slot and abuts against the protection plate along the second direction.

[0016] In any of the above technical solutions, further, the battery pack shell further includes a third limiting member, and the third limiting member includes a limiting rib arranged on the first shell portion;

[0017] The limiting rib is arranged opposite to the protection plate along the second direction.

[0018] In any of the above technical solutions, further, the second limit member further includes a second stopper and a third stopper;

[0019] The second stopper and the third stopper are respectively arranged on both sides of the first stopper along the third direction, and the first direction, the second direction and the third direction intersect each other;

[0020] The protection plate is disposed between the second stopper and the third stopper.

[0021] In any of the above technical solutions, further, the distance between the second stopper and the third stopper along the third direction is a first distance, and the size of the protection plate along the third direction is a first size;

[0022] The difference between the first distance and the first size is not less than 0.1 mm and not more than 0.4 mm;

[0023] And / or, the limiting rib and the protection plate are arranged at a second distance along the second direction;

[0024] The second distance is not less than 0.05 mm and not more than 0.2 mm.

[0025] In any of the above technical solutions, further, the third limiting member includes a plurality of limiting ribs, and the plurality of limiting ribs are arranged sequentially along the third direction;

[0026] The end of the protection plate facing the first shell portion is provided with the slot corresponding to at least one of the limiting ribs, and the limiting rib is passed through the slot.

[0027] In any of the above technical solutions, further, the battery pack shell also includes a handle, and the handle is arranged at one end of the shell body along the first direction away from the connector through hole.

[0028] The present application also provides a battery pack, comprising the battery pack shell described in any of the above technical solutions.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] The battery pack shell provided in the present application includes a shell body and a circuit protection module. When the protection circuit module is installed to the shell body, the connector is used as the assembly reference. The connector is precisely positioned by the first limiter, which can ensure the installation accuracy, stability and consistency of the connector. It is suitable for use in blind plug-in scenarios. At the same time, the protection plate is positioned by the first limiter and the second limiter to prevent the protection plate from shaking.

[0031] That is to say, in contrast to the prior art solution that uses the protection plate as the assembly reference, this overcomes the problem of the inevitable assembly error between the protection plate and the connector causing the position and size of the connector to be unstable after installation, which is not conducive to use in blind plug-in scenarios.

[0032] The battery pack provided in the present application includes the above-mentioned battery pack shell, thereby being able to achieve all the beneficial effects of the battery pack shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the structure of a battery pack housing provided in Example 1 of the present application;

[0035] Figure 2 An exploded view of the battery pack housing provided in Example 1 of the present application;

[0036] Figure 3 A first cross-sectional view of a battery pack housing provided in Embodiment 1 of the present application;

[0037] Figure 4 A second cross-sectional view of the battery pack housing provided in Embodiment 1 of the present application;

[0038] Figure 5 for Figure 4 A local enlarged view at point A;

[0039] Figure 6 for Figure 4 A local enlarged view at point B;

[0040] Figure 7 A third cross-sectional view of the battery pack housing provided in Embodiment 1 of the present application;

[0041] Figure 8 A schematic diagram of the structure of a protection circuit module of a battery pack housing provided in Example 1 of the present application;

[0042] Fig. 9 for Figure 8 Left view of;

[0043] Fig.10 A schematic structural diagram of the first shell portion of the battery pack shell provided in Example 1 of the present application;

[0044] Fig.11 A schematic diagram of the assembly of the first shell portion of the battery pack shell and the protection circuit module provided in the first embodiment of the present application;

[0045] Fig.12 for Fig.11 A local enlarged view at C;

[0046] Fig.13 A schematic diagram of the structure of the second shell portion of the battery pack shell provided in Example 1 of the present application;

[0047] Fig.14 A first assembly diagram of the second shell portion of the battery pack housing and the protection circuit module provided in the first embodiment of the present application;

[0048] Fig.15 This is a second assembly diagram of the second shell portion of the battery pack shell and the protection circuit module provided in Example 1 of the present application.

[0049] Reference numerals:

[0050] 1-battery pack shell; 10-shell body; 100-first shell; 101-second shell; 102-connector jack; 11-first limiting member; 110-limiting groove; 1100-second positioning portion; 12-second limiting member; 120-first stop portion; 121-second stop portion; 122-third stop portion; 13-third limiting member; 130-limiting rib; 14-first positioning member; 15-correcting member; 150-inclined surface; 16-bump; 17-handle; 18-protection circuit module; 180-connector; 181-protection board; 1810-first board surface; 1811-second board surface; 1812-slot; 1813-card slot. DETAILED DESCRIPTION

[0051] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] Embodiment 1

[0055] See also Figures 1 to 15 As shown, an embodiment of the present application provides a battery pack shell 1, the interior of the battery pack shell 1 is used to accommodate battery cells, so that the battery pack shell 1 and the battery cells are assembled to form a battery. The battery pack shell 1 has a connector 180, and the internal battery cells can be electrically connected to external devices through its connector 180.

[0056] This embodiment provides a battery pack housing 1 , including a housing body 10 and a protection circuit module 18 .

[0057] like Fig. 9 As shown, the protection circuit module 18 includes a protection board 181 and a connector 180 arranged on the board surface of the protection board 181, wherein the board surface of the protection board 181 includes a first board surface 1810 and a second board surface 1811 opposite to each other, and the connector 180 is arranged on the first board surface 1810 and electrically connected to the protection board 181.

[0058] During the assembly process of the protection board 181 of the protection circuit module 18 and the connector 180 , an assembly error is inevitably generated, which may cause a certain degree of relative skewness or deviation between the connector 180 and the protection board 181 .

[0059] Optionally, the connector 180 is welded to the protection plate 181 .

[0060] The shell body 10 is provided with a connector jack 102 . During the use of the battery pack shell 1 , the external component can be inserted into the shell body 10 through the connector jack 102 and blindly plugged with the connector 180 .

[0061] A first limiting member 11 is provided at the connector jack 102 , and a limiting groove 110 is provided on the first limiting member 11 . The connector 180 is adaptively inserted into the limiting groove 110 , so that the connector 180 is fixed relative to the first limiting member 11 , and the connector 180 is precisely positioned.

[0062] like Fig.11 As shown, a second stopper 12 is disposed inside the housing body 10, and the second stopper 12 is spaced apart from the first stopper 11 along the first direction a, and the protection plate 181 is inserted into the space between the first stopper 11 and the second stopper 12. Thus, the first stopper 11 stops the first plate surface 1810 of the protection plate 181, and the second stopper 12 stops the second plate surface 1811 of the protection plate 181, and then the protection plate 181 is positioned along the first direction a by the first stopper 11 and the second stopper 12.

[0063] The first direction a may be configured to be consistent with the plugging and unplugging direction of the connector 180 .

[0064] Furthermore, after the protection circuit module 18 is installed in the housing body 10, the connector 180 is precisely positioned by the first stopper 11, which can ensure the installation accuracy, stability and consistency of the connector 180, and is suitable for use in blind plugging scenarios. In addition, the protection plate 181 is positioned by the first stopper 11 and the second stopper 12 to prevent the protection plate 181 from shaking.

[0065] That is, unlike the prior art solution that uses the protection board 181 as an assembly reference, the protection circuit module 18 uses the connector 180 as an assembly reference.

[0066] In contrast, the solution in the prior art that uses the protection plate 181 as a positioning reference inevitably has a certain assembly error between the protection plate 181 and the connector 180, which can easily cause the connector 180 to be offset left and right, up and down, or even skewed relative to the shell body 10. In other words, the position and size of the connector 180 in the product are unstable, which is not conducive to use in blind plug-in scenarios.

[0067] In an optional solution of this embodiment, the shell body 10 includes a first shell part 100 and a second shell part 101 covering each other along a second direction b, and the first direction a intersects with the second direction b. Optionally, the second direction b is the thickness direction of the shell body 10, and the second direction b is perpendicular to the first direction a.

[0068] The first limiting member 11 and the second limiting member 12 are both disposed on the first shell portion 100 , so that the protection circuit module 18 is positioned relative to the first shell portion 100 by the first limiting member 11 and the second limiting member 12 .

[0069] The battery pack housing 1 further includes a first positioning member 14 disposed on the second shell portion 101 , and the connector 180 is provided with a second positioning portion 1100 , and the first positioning member 14 and the second positioning portion 1100 are adaptively plugged in along the third direction c.

[0070] During the assembly of the battery pack housing 1, the protection circuit module 18 can be first installed on the first housing 100, and then the second housing 101 can be installed. When installing the second housing 101, the first positioning member 14 of the second housing 101 is plugged into the second positioning portion 1100 of the connector 180 to achieve accurate positioning of the second housing 101 relative to the connector 180.

[0071] On this basis, the first shell 100 and the second shell 101 are covered to form the shell body 10, thereby ensuring that the assembly position of the second shell 101 is stable and consistent, and the structural dimensions associated with the first positioning member 14 on the second shell 101 are guaranteed to have dimensional accuracy when assembled to the first shell 100.

[0072] Optionally, when the first shell 100 and the second shell 101 are in the covering state, the connection can be achieved by means of snap connection or screw connection.

[0073] In an optional solution of this embodiment, the battery pack housing 1 further includes a correcting piece 15 disposed on the second shell portion 101 , and the correcting piece 15 presses against a plate surface of the protection plate 181 that is away from the connector 180 in the first direction a.

[0074] The correcting member 15 is disposed on the second shell portion 101 , and the structural dimensions of the correcting member 15 can be associated with the first positioning member 14 , so that when the first positioning member 14 is plugged into the second positioning portion 1100 , the installation position accuracy of the correcting member 15 can be guaranteed.

[0075] The plate surface of the protection plate 181 that is away from the connector 180 in the first direction a is a second plate surface 1811 . The correcting member 15 abuts against the second plate surface 1811 of the protection plate 181 . The correcting member 15 can always push the protection plate 181 toward the connector 180 .

[0076] Therefore, when installing the second shell 101, the correcting piece 15 can play a role in pushing the protection plate 181 to adjust to the designed position, thereby improving the installation accuracy of the protection plate 181. After the battery pack shell 1 is assembled and used as a finished product, the correcting piece 15 can prevent the protection circuit module 18 from shifting toward the inside of the shell body 10, especially preventing the connector 180 from shifting due to the plug-in force during use.

[0077] Optionally, a slope 150 is provided at the end of the correction piece 15 facing the first shell 100 along the second direction b, and the slope 150 faces the protective plate 181 along the first direction a, and the slope 150 is inclined close to the protective plate 181 from the first shell 100 to the second shell 101.

[0078] When installing the second shell 101, the inclined surface 150 serves as a guide between the correcting piece 15 and the protective plate 181, so that the protective plate 181 can be pushed and adjusted by the correcting piece 15 along the inclined surface 150, which facilitates the correcting piece 15 and the second plate surface 1811 of the protective plate 181 to form abutting relationship, thereby improving the installation efficiency of the second shell 101.

[0079] In an optional solution of this embodiment, a slot 1813 is provided at the end of the protection plate 181 facing the second shell portion 101 along the second direction b, and the slot 1813 passes through the protection plate 181 along the first direction a.

[0080] The battery pack shell 1 also includes a protrusion 16 arranged on the second shell portion 101, which is engaged with the slot 1813 and abuts against the protective plate 181 along the second direction b, so that the protective plate 181 is positioned relative to the second shell portion 101 through the cooperation between the slot 1813 and the protrusion 16.

[0081] Optionally, there are multiple slots 1813 and multiple protrusions 16, and multiple protrusions 16 are correspondingly engaged in multiple slots 1813, thereby forming multi-point positioning between the protective plate 181 and the second shell 101 to prevent the protective plate 181 from vibrating or shaking relative to the second shell 101.

[0082] In an optional solution of this embodiment, the battery pack housing 1 further includes a third limiting member 13 , and the third limiting member 13 includes a limiting rib 130 disposed on the first shell portion 100 .

[0083] The limiting rib 130 is arranged relative to the protective plate 181 along the second direction b, so that the protective plate 181 can be supported and limited along the second direction b by the limiting rib 130, so as to achieve preliminary limitation of the protective plate 181 along the second direction b, avoid direct friction or collision between the protective plate 181 and the first shell 100, and thus protect the protective plate 181.

[0084] In an optional solution of this embodiment, the second limiting member 12 further includes a second stopping portion 121 and a third stopping portion 122 .

[0085] The second stopper 121 and the third stopper 122 are respectively disposed on both sides of the first stopper 120 along the third direction c, and the first direction a, the second direction b and the third direction c intersect each other.

[0086] Optionally, the first direction a, the second direction b and the third direction c can be arranged perpendicularly in pairs.

[0087] Optionally, a plurality of first stoppers 120 may be provided, and the plurality of first stoppers 120 are arranged at intervals along the third direction c, so that the second stoppers 121 and the third stoppers 122 are respectively provided on both sides of all the first stoppers 120 along the third direction c. In the figure, a situation is shown in which the number of the first stoppers 120 is one, and the second stoppers 121 and the third stoppers 122 are respectively connected to both sides of the first stoppers 120 in the third direction c.

[0088] The protective plate 181 is arranged between the second stop portion 121 and the third stop portion 122, so that the protective plate 181 is limited along the third direction c by the second stop portion 121 and the third stop portion 122, so that the protective plate 181 is positioned and installed relative to the first shell 100 along the third direction c, and the protective plate 181 is prevented from shifting along the third direction c.

[0089] In an optional scheme of this embodiment, the distance between the second stop portion 121 and the third stop portion 122 along the third direction c is a first distance, the size of the protective plate 181 along the third direction c is a first size, and the difference between the first distance and the first size is not less than 0.1 mm and not greater than 0.4 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm or 0.4 mm.

[0090] Among them, the spacing dimension between the protective plate 181 and the second stop portion 121 along the third direction c is the first sub-dimension H1', ​​and the spacing dimension between the protective plate 181 and the third stop portion 122 along the third direction c is the second sub-dimension H1", that is, the difference between the first distance and the first dimension is equal to the sum of the first sub-dimension H1' and the second sub-dimension H1", so that the sum of the first sub-dimension H1' and the second sub-dimension H1" is not less than 0.1mm and not greater than 0.4mm.

[0091] That is to say, the first distance between the second stop portion 121 and the third stop portion 122 reserves an installation adjustment margin for the protection plate 181 in the third direction c, thereby avoiding interference between the protection plate 181 and the second stop portion 121 and the third stop portion 122 during the assembly of the protection circuit module 18 to the shell body 10, thereby ensuring smooth installation.

[0092] In an optional solution of this embodiment, the limiting rib 130 and the protection plate 181 are arranged at a second distance H2 along the second direction b, and the second distance H2 is not less than 0.05 mm and not more than 0.2 mm, for example 0.05 mm, 0.1 mm, 0.15 mm or 0.2 mm.

[0093] That is to say, the setting height of the limiting rib 130 reserves an installation adjustment margin for the protection plate 181 in the second direction b, avoiding interference between the protection plate 181 and the limiting rib 130 during the assembly of the protection circuit module 18 to the shell body 10, thereby ensuring smooth installation.

[0094] In an optional solution of this embodiment, the third limiting member 13 includes a plurality of limiting ribs 130, and the plurality of limiting ribs 130 are arranged sequentially along the third direction c, so that the plurality of limiting ribs 130 jointly provide preliminary limiting of the second direction b for the protection plate 181.

[0095] A slot 1812 is provided at the end of the protection plate 181 facing the first shell portion corresponding to at least one limiting rib 130, and the limiting rib 130 is passed through the slot 1812, wherein the limiting rib 130 corresponding to the slot 1812 can be raised, and a margin of not less than 0.05 mm and not more than 0.2 mm is reserved between the raised limiting rib 130 and the bottom of the slot 1812, so that the raised limiting rib 130 and the protection plate 181 will not interfere with each other in the slot 1812.

[0096] Furthermore, by means of the limiting ribs 130 and the slots 1812 , the edge of the protection plate 181 facing the limiting ribs 130 can be positioned and installed along the third direction c, thereby preventing the two opposite sides of the protection plate 181 along the third direction c from being skewed.

[0097] In an optional solution of this embodiment, there are multiple first positioning members 14 , the multiple first positioning members 14 are arranged at intervals along the third direction c, and the multiple second positioning portions 1100 are arranged in a one-to-one correspondence with the multiple first positioning members 14 .

[0098] Thus, the connector 180 and the second shell can be precisely positioned at multiple points by using the multiple first positioning members 14 and the multiple second positioning portions 1100 , thereby improving the positioning accuracy and reliability of the connector 180 and the second shell.

[0099] In this embodiment, there are multiple correcting pieces 15, and the multiple correcting pieces 15 are arranged at intervals along the third direction c, so that the protective plate 181 is pushed and corrected at multiple points through the multiple correcting pieces 15, so that the protective plate 181 can be evenly stressed when being pushed and after being pushed into place, thereby improving the positioning accuracy and positioning reliability of the protective plate 181 relative to the shell body 10.

[0100] In an optional solution of this embodiment, the battery pack housing 1 further includes a handle 17 , and the handle 17 is disposed at one end of the housing body 10 away from the through hole of the connector 180 along the first direction a.

[0101] In this technical solution, by adding a handle 17 to the shell body 10, the battery pack shell 1 can be easily pulled out after being assembled to the whole machine for inspection or replacement.

[0102] Embodiment 2

[0103] Embodiment 2 provides a battery pack, which includes the battery pack shell in Embodiment 1. The technical features of the battery pack shell disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the battery pack shell disclosed in Embodiment 1 will not be described repeatedly.

[0104] Combination Figures 1 to 15 As shown, the battery pack provided in this embodiment includes a battery pack housing 1. Optionally, the battery pack further includes a battery, which is disposed in the battery pack housing 1 and is electrically connected to a protection board 181 of a protection circuit module 18.

[0105] The battery pack in this embodiment has the advantages of the battery pack shell in the first embodiment, and the advantages of the battery pack shell disclosed in the first embodiment will not be repeatedly described here.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the utility model and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A battery pack housing, characterized in that: It includes a housing body and a protection circuit module; The protection circuit module includes a protection board and a connector disposed on a board surface of the protection board; The housing body is provided with a connector jack, the housing body is provided with a first limiting member at the connector jack, the first limiting member is provided with a limiting groove, and the connector is adaptively arranged in the limiting groove; A second limiter is disposed in the shell body, the second limiter includes a first stopper, the first stopper and the first limiter are spaced apart along a first direction, and the protection plate is disposed between the first limiter and the first stopper.

2. The battery pack housing according to claim 1, characterized in that: The housing body comprises a first shell portion and a second shell portion covering each other along a second direction, wherein the first direction intersects with the second direction; The first limiting member and the second limiting member are both arranged on the first shell portion, and the battery pack housing further comprises a first positioning member arranged on the second shell portion; The connector is provided with a second positioning portion, and the first positioning member is plugged into the second positioning portion in an adaptive manner.

3. The battery pack housing according to claim 2, characterized in that: The battery pack housing further includes a correction member disposed on the second shell portion; The correcting member abuts against a plate surface of the protection plate that is away from the connector in the first direction.

4. The battery pack housing according to claim 2, characterized in that: The end of the protection plate facing the second shell portion along the second direction is provided with a slot; The battery pack shell further includes a protrusion disposed on the second shell portion, the protrusion is engaged with the card slot and abuts against the protection plate along the second direction.

5. The battery pack housing according to claim 2, characterized in that: The battery pack housing further includes a third limiting member, wherein the third limiting member includes a limiting rib disposed on the first shell portion; The limiting rib is arranged opposite to the protection plate along the second direction.

6. The battery pack housing according to claim 5, characterized in that: The second limit member further includes a second stopper and a third stopper; The second stopper and the third stopper are respectively arranged on both sides of the first stopper along the third direction, and the first direction, the second direction and the third direction intersect each other; The protection plate is disposed between the second stopper and the third stopper.

7. The battery pack casing according to claim 6, characterized in that: The distance between the second stopper and the third stopper along the third direction is a first distance, and the dimension of the protection plate along the third direction is a first dimension; The difference between the first distance and the first size is not less than 0.1 mm and not more than 0.4 mm; And / or, the limiting rib and the protection plate are arranged at a second distance along the second direction; The second distance is not less than 0.05 mm and not more than 0.2 mm.

8. The battery pack casing according to claim 6, characterized in that: The third limiting member includes a plurality of limiting ribs, and the plurality of limiting ribs are arranged in sequence along the third direction; An end of the protection plate facing the first shell portion is provided with a slot corresponding to at least one of the limiting ribs, and the limiting rib is passed through the slot.

9. The battery pack housing according to claim 1, characterized in that: A handle is also included, and the handle is arranged at one end of the shell body along the first direction away from the connector through hole.

10. A battery pack, characterized in that: A battery pack casing comprising the battery pack casing according to any one of claims 1 to 9.

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