Battery, battery pack, and vehicle

Abstract

A battery (100), a battery pack (1000), and a vehicle (10000). The battery (100) comprises a battery housing (110); an electrode core (120), lead-out plates (141, 142) and conductive posts (131, 132). The electrode core (120) and the lead-out plates (141, 142) are all arranged in the battery housing (110); the lead-out plates (141, 142) are connected to the electrode core (120); Conductive posts (131, 132) pass through the battery housing (110) and are connected to lead-out plates (141, 142), and the relationship between the cross-sectional area slead of the lead-out plates (141, 142) and the capacity C of the battery (100) is C / slead ≤ 15, the unit of slead is mm2, and the unit of C is Ah.

Description

Technology Field

[0001] The present disclosure claims the priority and benefits of Chinese Patent Application No. 202210515990.7, filed on May 12, 2022, with the title of the invention "BATTERY, BATTERY PACK, AND VEHICLE", and Chinese Patent Application No. 202222993656.0, filed on November 10, 2022, with the title of the invention "BATTERY, BATTERY PACK, AND VEHICLE". The entire contents of the applications referenced above are incorporated herein by reference.

[0002] The present disclosure relates to the field of battery technologies, specifically to batteries, battery packs, and vehicles. Background Technology

[0003] In conventional batteries, lead-out plates are arranged in the battery housing and connected between the tabs and conductive posts of the electrode cores so that current flows into and out of the battery. However, in the conventional technology, the lead-out plates have a single size. The cross-sectional area of ​​the lead-out plates is too large, causing waste of resources, or the cross-sectional area of ​​the lead-out plates is too small, causing heating problems and additionally causing thermal security problems of the battery.

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art. Accordingly, the objective of the present disclosure is to provide a battery having a strong current carrying capacity to ensure that, during use, the temperature does not rise excessively due to a small current carrying region and does not exceed the operating temperature range of the battery, in order to avoid thermal security problems of the battery.

[0005] The present disclosure further provides a battery pack having the battery described above.

[0006] The present disclosure further provides a vehicle having the battery pack described above.

[0007] A battery according to the present disclosure comprises a battery housing, an electrode core, read-out plates, and conductive posts. The electrode core and the read-out plates are all arranged in the battery housing, the read-out plates are connected to the electrode core, and the conductive posts pass through the battery housing and are connected to the read-out plates. The cross-sectional area s of the read-out plates lead The relationship between and the battery capacity C is C / s lead ≤15. s lead The unit is mm 2 And, the unit of C is Ah.

[0008] According to the battery of the present disclosure, the cross-sectional area s of the read-out plates lead The relationship between and the battery capacity C is C / s lead It is configured to be ≤8. This ensures the current carrying capacity of the lead-out plate and guarantees that the temperature of the lead-out plate does not rise excessively due to the small current carrying area during battery use, so that the internal temperature distribution of the battery is not affected, the internal temperature of the battery does not exceed the operating temperature range of the battery, and no thermal safety issues of the battery occur.

[0009] Optionally, the cross-sectional area s of the read-out plates lead The relationship between and the battery capacity C is 2≤C / s lead ≤15.

[0010] Optionally, the cross-sectional area s of the read-out plates lead The relationship between and the battery capacity C is 2≤C / s lead ≤15.

[0011] Optionally, the read-out plates include a positive read-out plate and a negative read-out plate. The conductive posts include a positive conductive post and a negative conductive post. The positive read-out plate passes through the battery housing and is connected to the positive conductive post, and the negative read-out plate passes through the battery housing and is connected to the negative conductive post. The cross-sectional area s of the positive read-out plate positive lead The relationship between and the battery capacity C is 5≤C / s positive lead ≤12 and the cross-sectional area s of the negative read-out plate negative lead The relationship between and the battery capacity C is 6 ≤ C / s negative lead ≤15. The cross-sections of the positive read-out plate and the negative read-out plate are surfaces orthogonal to the direction of current flow, and s positive lead and s negative lead The units are mm 2 And, the unit of C is Ah.

[0012] Optionally, the cross-sectional area of ​​the positive read-out plate is 14 mm 2 up to 150 mm 2 It is within the range, and the cross-sectional area of ​​the negative lead-out plate is 10 mm 2 up to 130 mm 2 The range is, and the battery capacity C is in the range of 30 Ah to 400 Ah.

[0013] Optionally, the positive read-out plate is an aluminum sheet, and the negative read-out plate is a copper sheet.

[0014] Optionally, the positive read-out plate and the negative read-out plate each comprise a connected first connecting sheet and a second connecting sheet. The second connecting sheet of the positive read-out plate is connected to the positive tab of the electrode core, the first connecting sheet of the positive read-out plate is connected to a positive conductive post, the second connecting sheet of the negative read-out plate is connected to the negative tab of the electrode core, and the first connecting sheet of the negative read-out plate is connected to a negative conductive post.

[0015] Optionally, the size of the first connecting sheet in the longitudinal direction of the battery is in the range of 0.8 mm to 2 mm.

[0016] Optionally, the size of the first connecting sheet in the longitudinal direction of the battery is in the range of 0.6 mm to 2 mm.

[0017] Optionally, the battery housing includes a first plate piece and a second plate piece facing each other in the longitudinal direction of the battery. Each of the first connecting sheet of the positive read-out plate and the first connecting sheet of the negative read-out plate is parallel to the first plate piece and the second plate piece.

[0018] Optionally, the battery housing further comprises a third plate piece and a fourth plate piece facing each other in the width direction of the battery, and a fifth plate piece and a sixth plate piece facing each other in the thickness direction of the battery. Each of the second connecting sheet of the positive read-out plate and the second connecting sheet of the negative read-out plate is parallel to the fifth plate piece and the sixth plate piece.

[0019] Optionally, the first plate piece, the second plate piece, the third plate piece, the fourth plate piece, and the fifth plate piece are configured with a lower housing having one side open, and the sixth plate piece is fixedly connected to the lower housing to block the open end of the lower housing.

[0020] Optionally, the battery further includes a first insulating spacer arranged in the battery housing. At least a portion of the first insulating spacer is positioned between the positive lead-out plate and the first plate piece, and a positive conductive post passes through the first insulating spacer and is connected to the positive lead-out plate.

[0021] Optionally, the battery further includes a second insulating spacer arranged in the battery housing. At least a portion of the second insulating spacer is positioned between the negative lead-out plate and the second plate piece, and a negative conductive post passes through the second insulating spacer and is connected to the negative lead-out plate.

[0022] Optionally, the relationship between the cross-sectional area s1 of the positive conductive post and the battery capacity C is 6 / 5 ≤ C / s1 ≤ 16 / 3, the relationship between the cross-sectional area s2 of the negative conductive post and the battery capacity C is 6 / 5 ≤ C / s2 ≤ 8, and the units of s1 and s2 are both mm 2 am.

[0023] Optionally, the cross-sectional area s1 of the positive conductive post and the cross-sectional area s2 of the negative conductive post are 12 mm 2 up to 315 mm 2 The range is, and the battery capacity C is in the range of 30 Ah to 400 Ah.

[0024] Optionally, the positive conductive post is an aluminum post, and the negative conductive post is a copper post.

[0025] A battery pack according to the present disclosure includes the battery described above.

[0026] A vehicle according to the present disclosure includes the battery described above or the battery pack described above.

[0027] Additional aspects and advantages of the present disclosure will be provided in the following description, some of which will become apparent from the following description or can be learned from the practices of the present disclosure. Brief explanation of the drawing

[0028] The foregoing and / or additional aspects and advantages of the present disclosure will become apparent and understandable from the following descriptions of embodiments with reference to the accompanying drawings.

[0029] FIG. 1 is a drawing of a lower housing of a battery according to one embodiment of the present disclosure.

[0030] FIG. 2 is a drawing of a battery according to one embodiment of the present disclosure.

[0031] Figure 3 is an enlarged view of part C marked with a circle in Figure 2.

[0032] FIG. 4 is a drawing of a battery according to one embodiment of the present disclosure.

[0033] Figure 5 is an enlarged view of part D marked with a circle in Figure 4.

[0034] FIG. 6 is a drawing in which the cross-section of a first positive (negative) conductive post or a second positive (negative) conductive post is cylindrical, according to one embodiment of the present disclosure.

[0035] FIG. 7 is a drawing in which the cross-section of a first positive (negative) conductive post or a second positive (negative) conductive post is racetrack-shaped, according to one embodiment of the present disclosure.

[0036] FIG. 8 is a cross-sectional view of a battery according to one embodiment of the present disclosure.

[0037] Figure 9 is an enlarged view of part E marked with a circle in Figure 8.

[0038] Figure 10 is an enlarged view of part H marked with a circle in Figure 8.

[0039] FIG. 11 is a drawing of a first insulating spacer according to one embodiment of the present disclosure.

[0040] FIG. 12 is a diagram of the cooperation between a second insulating spacer and a negative lead-out plate according to one embodiment of the present disclosure.

[0041] FIG. 13 is a drawing of a positive read-out plate according to one embodiment of the present disclosure.

[0042] FIG. 14 is a drawing of a negative read-out plate according to one embodiment of the present disclosure.

[0043] FIG. 15 is an exploded view of a battery according to one embodiment of the present disclosure.

[0044] FIG. 16 is a drawing of a battery in a direction according to one embodiment of the present disclosure.

[0045] FIG. 17 is a drawing of a battery in another direction according to one embodiment of the present disclosure.

[0046] FIG. 18 is a drawing of a battery in another direction according to one embodiment of the present disclosure.

[0047] FIG. 19 is a diagram of cooperation between a positive conductive post, a sealing ring, and a battery housing of a battery according to another embodiment of the present disclosure.

[0048] FIG. 20 is a diagram of cooperation between a negative conductive post, a sealing ring, and a battery housing of a battery according to another embodiment of the present disclosure.

[0049] Figure 21 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in the comparative example and Example 1.

[0050] Figure 22 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in the comparative example and Example 2.

[0051] Figure 23 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in the comparative example and Example 3.

[0052] Figure 24 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in the comparative example and Example 4.

[0053] Figure 25 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in the comparative example and Example 5.

[0054] Figure 26 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in Comparative Example and Example 6.

[0055] Figure 27 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in Comparative Example and Example 7.

[0056] Figure 28 is a diagram of the temperature rise curves of the positive conductive post and the negative conductive post in Comparative Example and Example 8.

[0057] FIG. 29 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in the comparative example and Example 1.

[0058] Figure 30 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in the comparative example and Example 2.

[0059] Figure 31 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in the comparative example and Example 3.

[0060] Figure 32 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in the comparative example and Example 4.

[0061] Figure 33 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in Comparative Example and Example 5.

[0062] Figure 34 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in the comparative example and Example 6.

[0063] Figure 35 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in Comparative Example and Example 7.

[0064] Figure 36 is a diagram of the temperature rise curves of the positive lead-out plate and the negative lead-out plate in Comparative Example and Example 8.

[0065] FIG. 37 is a drawing of a battery pack according to one embodiment of the present disclosure.

[0066] FIG. 38 is a drawing of a vehicle according to one embodiment of the present disclosure.

[0067] FIG. 39 is a drawing of a vehicle according to another embodiment of the present disclosure.

[0068] In the drawings:

[0069] Vehicle (10000), battery pack (1000), battery (100), battery housing (110), first plate piece (111), second plate piece (112), third plate piece (113), fourth plate piece (114), fifth plate piece (115), sixth plate piece (116), electrode core (120), positive conductive post (131), first positive conductive post (131a), second positive conductive post (131b), first connecting member (131c), first insulating plate (131d), positive conductive post flange edge (131e), negative conductive post (132), first negative conductive post (132a), second negative conductive post (132b), second connecting member (132c), second insulating plate (132d), negative conductive post flange (132e), positive lead-out Plate (141), positive first connection sheet (141a), positive second connection sheet (141b), negative lead-out plate (142), negative first connection sheet (142a), negative second connection sheet (142b), first sealing ring (151), second sealing ring (152), first insulating spacer (161), first support piece (161a), first insulating piece vertical plate (161b), first insulating piece horizontal plate (161c), second insulating spacer (162), second support piece (162a), second insulating piece vertical plate (162b), second insulating piece horizontal plate (162c), electrolyte immersion through hole (101), and via (102) Specific details for implementing the invention

[0070] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are illustrated in the accompanying drawings, wherein identical or similar elements or elements having identical or similar functions are indicated by identical or similar reference numerals throughout the description. The embodiments described below with reference to the accompanying drawings are illustrative and are used only to explain the present disclosure and should not be construed as a limitation to the present disclosure.

[0071] A battery (100) according to embodiments of the present disclosure is described below with reference to FIGS. 1 to 36.

[0072] A battery according to embodiments of the present disclosure comprises a battery housing (110), an electrode core (120), and conductive posts.

[0073] An electrode core (120) is arranged in a battery housing (110), and a conductive post passes through the battery housing (110), so that the inner end of the conductive post is connected to the electrode core (120) and the outer end of the conductive post extends outside the battery housing (110). Specifically, the inner end of the conductive post is connected to a tab of the electrode core (120). Additionally, the cross-sectional area of ​​the conductive post is s, the capacity of the battery is C, and the relationship between s and C is C / s ≤ 8, where the unit of s is mm 2 And, the unit of C is Ah.

[0074] The size of the cross-sectional area of ​​a conductive post can be understood as representing its current-carrying capacity. A larger cross-sectional area of ​​a conductive post represents a stronger current-carrying capacity. Additionally, the minimum cross-sectional area on the conductive post determines its current-carrying capacity. The cross-section of a conductive post is a surface orthogonal to the direction of current flow. If the conductive post is cylindrical and the direction of current flow is along the axial direction of the conductive post, the cross-section is a radial cross-section, and its shape is circular. When a conductive post is designed using a variable cross-section, the cross-sectional area of ​​the conductive post can be understood as the area of ​​the minimum cross-section on the conductive post.

[0075] After extensive experiments and discussions, the inventors of the present disclosure find that the following relationship is satisfied: C / s ≤ 8. This ensures that, in order to guarantee the current carrying capacity of the conductive posts of the battery (100) and to avoid thermal security issues of the battery (100), the temperature does not rise excessively due to the small current carrying area during use of the battery (100) and does not exceed the operating temperature range of the battery (100).

[0076] In some embodiments of the present disclosure, the relationship between the cross-sectional area s of a conductive post and the capacity C of a battery is 6 / 5 ≤ C / s ≤ 8. The inventors find that a smaller ratio of the battery capacity C to the cross-sectional area s of the conductive post is not necessarily better. A ratio that is too small can cause the size of the conductive post to become excessively large, which can lead to redundant design.

[0077] In some embodiments of the present disclosure, the conductive posts include a positive conductive post (131) and a negative conductive post (132). The relationship between the cross-sectional area s1 of the positive conductive post (131) and the capacity C of the battery is 6 / 5 ≤ C / s1 ≤ 16 / 3, and the relationship between the cross-sectional area s2 of the negative conductive post (132) and the capacity C of the battery is 6 / 5 ≤ C / s2 ≤ 8, and the units of s1 and s2 are both mm. 2 It is understood that when a positive conductive post (131) comprises a plurality of positive posts passing through the battery housing (110) and connected to the positive tabs of the electrode core (120), the cross-sectional area s1 of the positive conductive post (131) is the sum of the cross-sectional areas of the plurality of positive posts. When the positive post is designed using a variable cross-section, the cross-sectional area of ​​the positive post can be understood as the area of ​​the minimum cross-section on the positive post. When a negative conductive post (132) comprises a plurality of negative posts passing through the battery housing (110) and connected to the negative tabs of the electrode core (120), the cross-sectional area s2 of the negative conductive post (132) is the sum of the cross-sectional areas of the plurality of negative posts. When the negative post is designed using a variable cross-section, the cross-sectional area of ​​the negative post can be understood as the area of ​​the minimum cross-section on the negative post.

[0078] Additionally, the relationship between the cross-sectional area s1 of the positive conductive post (131) and the capacity C of the battery is 8 / 3 ≤ C / s1 ≤ 16 / 3, and the relationship between the cross-sectional area s2 of the negative conductive post (132) and the capacity C of the battery is 3 ≤ C / s2 ≤ 8.

[0079] It should be noted that the positive conductive post (131) of the battery (100) can be made of aluminum materials and the negative conductive post (132) can be made of copper materials, and that the conductivity of the aluminum materials and the copper materials are different. When the cross-sectional areas are the same, copper has a stronger current carrying capacity than aluminum. Therefore, to ensure the same current carrying capacity of the positive conductive post (131) and the negative conductive post (132), the cross-sectional area of ​​the negative conductive post (132) made of copper may be smaller.

[0080] In some embodiments of the present disclosure, the cross-sectional area s1 of the positive conductive post and the cross-sectional area s2 of the negative conductive post are 12 mm 2 up to 315 mm 2 The range is, and the battery capacity C is in the range of 30 Ah to 400 Ah.

[0081] The following describes the comparative example (i.e., prior art) and embodiments 1 through 8 (i.e., embodiments of the present disclosure) of Table 1. Under the same operating conditions, the batteries in the comparative example and embodiments 1 through 8 are each rapidly charged at a rate of 2C, and the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) are recorded. In the comparative example and embodiments 1 through 8, the cross-sectional area s1 of the positive conductive post (131), the cross-sectional area s2 of the negative conductive post (132), and the total capacity C of the battery are selected from the data in Table 1 below. FIG. 21 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in the comparative example and embodiment 1. FIG. 22 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in the comparative example and embodiment 2. FIG. 23 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 3. FIG. 24 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 4. FIG. 25 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 5. FIG. 26 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 6. FIG. 27 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 7. FIG. 28 is a diagram of the temperature rise curves of the positive conductive post (131) and the negative conductive post (132) in Comparative Example and Example 8.

[0082] Compared to the comparative example, in Examples 1 to 8, the temperature rises of the positive conductive post (131) and the negative conductive post (132) are lower, ensuring that the battery is in a good operating state.

[0083] Additionally, as illustrated in FIGS. 3 and 5, the positive conductive post (131) comprises a first positive conductive post (131a), a second positive conductive post (131b), and a first connecting member (131c). Both the first positive conductive post (131a) and the second positive conductive post (131b) pass through the battery housing (110) and are connected to the positive tabs of the electrode core (120). The first connecting member (131c) is arranged outside the battery housing (110) and is electrically connected to the first positive conductive post (131a) and the second positive conductive post (131b). The cross-sectional area s1 of the positive conductive post (131) is the sum of the cross-sectional area of ​​the first positive conductive post (131a) and the cross-sectional area of ​​the second positive conductive post (131b).

[0084] The negative conductive post (132) includes a first negative conductive post (132a), a second negative conductive post (132b), and a second connecting member (132c). Both the first negative conductive post (132a) and the second negative conductive post (132b) pass through the battery housing (110) and are connected to the negative tabs of the electrode core (120). The second connecting member (132c) is arranged outside the battery housing (110) and is electrically connected to the first negative conductive post (132a) and the second negative conductive post (132b). The cross-sectional area s2 of the negative conductive post (132) is the sum of the cross-sectional area of ​​the first negative conductive post (132a) and the cross-sectional area of ​​the second negative conductive post (132b).

[0085] A first connecting member (131c) is connected between the outer end of a first positive conductive post (131a) and the outer end of a second positive conductive post (131b), so that the contact area between the first positive conductive post (131a) and the second positive conductive post (131b) is increased, and the positive conductive post (131) can be more easily connected to the outside. A second connecting member (132c) is connected between the outer end of a first negative conductive post (132a) and the outer end of a second negative conductive post (132b), so that the contact area between the first negative conductive post (132a) and the second negative conductive post (132b) is increased, and the negative conductive post (132) can be more easily connected to the outside.

[0086] In some embodiments of the present disclosure, the cross-sections of the first positive conductive post (131a) and the second positive conductive post (131b) are circular or obround, and the cross-sections of the first negative conductive post (132a) and the second negative conductive post (132b) are circular or obround. When the size of the battery housing (110) is large in the thickness direction, the first positive conductive post (131a), the second positive conductive post (131b), the first negative conductive post (132a), and the second negative conductive post (132b) having circular cross-sections may be used. However, if the size of the battery housing (110) in the thickness direction is small, a first positive conductive post (131a), a second positive conductive post (131b), a first negative conductive post (132a), and a second negative conductive post (132b) having an elongated oval-shaped cross section may be used. This ensures that the first positive conductive post (131a), the second positive conductive post (131b), the first negative conductive post (132a), and the second negative conductive post (132b) do not exceed the size of the battery housing (110) in the thickness direction, provided that the positive conductive post (131) and the negative conductive post (132) have sufficient current carrying capabilities.

[0087] In some embodiments of the present disclosure, as illustrated in FIGS. 1 to 4 and FIGS. 15 to 20, the battery housing (110) comprises a first plate piece (111) and a second plate piece (112) facing each other in the longitudinal direction of the battery (100), a third plate piece (113) and a fourth plate piece (114) facing each other in the width direction of the battery (100), and a fifth plate piece (115) and a sixth plate piece (116) facing each other in the thickness direction of the battery (100). The size of the battery (100) in the longitudinal direction is larger than the size of the battery (100) in the width direction, and the size of the battery (100) in the width direction is larger than the size of the battery (100) in the thickness direction.

[0088] The first plate piece (111) and the second plate piece (112) are respectively connected to one end and the other end on the same side of the third plate piece (113) and the fourth plate piece (114) in the longitudinal direction of the battery (100). In other words, the first plate piece (111) is connected to one end on the same side of the third plate piece (113) and the fourth plate piece (114) in the longitudinal direction of the battery (100), and the second plate piece (112) is connected to the other end on the same side of the third plate piece (113) and the fourth plate piece (114) in the longitudinal direction of the battery (100). The fifth plate piece (115) and the sixth plate piece (116) are respectively connected to one end and the other end on the same side of the third plate piece (113) and the fourth plate piece (114) in the thickness direction of the battery (100). In other words, the fifth plate piece (115) is connected to one end on the same side of the third plate piece (113) and the fourth plate piece (114) in the thickness direction of the battery (100), and the sixth plate piece (116) is connected to the other end on the same side of the third plate piece (113) and the fourth plate piece (114) in the thickness direction of the battery (100).

[0089] A positive conductive post (131) is arranged on a first plate piece (111), a negative conductive post (132) is arranged on a second plate piece (112), a first insulating plate (131d) is arranged between the first plate piece (111) and the first connecting member (131c), and a second insulating plate (132d) is arranged between the second plate piece (112) and the second connecting member (132c). This can effectively prevent electrical connection between the first connecting member (131c) and the battery housing (110), and electrical connection between the second connecting member (132c) and the battery housing (110).

[0090] Additionally, a first via through which a first positive conductive post (131a) passes and a second via through which a second positive conductive post (131b) passes are provided on the first plate piece (111), and a third via through which a first negative conductive post (132a) passes and a fourth via through which a second negative conductive post (132b) passes are provided on the second plate piece (112).

[0091] A positive read-out plate (141) and a negative read-out plate (142) are additionally arranged in the battery housing (110). The positive read-out plate (141) can be connected to the positive tab of the electrode core (120), and additionally, the positive read-out plate (141) is additionally connected to a positive conductive post (131), and the negative read-out plate (142) can be connected to the negative tab of the electrode core (120), and additionally, the negative read-out plate (142) is additionally connected to a negative conductive post (132).

[0092] As shown in FIGS. 9 and 10, a first sealing ring (151) is sleeved on a positive conductive post (131), and the first sealing ring (151) is interposed between a positive lead-out plate (141) and a first plate piece (111). A second sealing ring (152) is sleeved on a negative conductive post (132), and the second sealing ring (152) is interposed between a negative lead-out plate (142) and a second plate piece (112). In this way, the positive conductive post (131) is limited by the first sealing ring (151), and accordingly, the positive conductive post (131) is on the first plate piece (111) and does not come into contact with the inner wall of the via through which the positive conductive post (131) passes, and the negative conductive post (132) is limited by the second sealing ring (152), and accordingly, the negative conductive post (132) is on the second plate piece (112) and does not come into contact with the inner wall of the via through which the negative conductive post (132) passes.

[0093] A first insulating spacer (161) is additionally arranged between the positive read-out plate (141) and the first plate piece (111). A positive conductive post (131) passes through the first insulating spacer (161) and is connected to the positive read-out plate (141). The first insulating spacer (161) is an insulating member. The first insulating spacer (161) can avoid contact between the positive read-out plate (141) and the battery housing (110) to improve the security performance of the battery (100).

[0094] A second insulating spacer (162) is additionally arranged between the negative read-out plate (142) and the second plate piece (112). A negative conductive post (132) passes through the second insulating spacer (162) and is connected to the negative read-out plate (142). The second insulating spacer (162) is an insulating member. The second insulating spacer (162) can avoid contact between the negative read-out plate (142) and the battery housing (110) to improve the security performance of the battery (100).

[0095] Additionally, a first step piece that matches the inner end of the first sealing ring (151) is arranged on the outer surface of the first insulating spacer (161), and the first step piece can restrict the movement of the first sealing ring (151) and the positive conductive post (131) to avoid direct contact between the positive conductive post (131) and the battery housing (110). A second step piece that matches the inner end of the second sealing ring (152) is arranged on the outer surface of the second insulating spacer (162), and the second step piece can restrict the movement of the second sealing ring (152) and the negative conductive post (132) to avoid direct contact between the negative conductive post (132) and the battery housing (110).

[0096] It can be understood that a portion of the inner end of the positive conductive post (131) is matched with a step piece on the first insulating spacer (161) and another portion of the positive conductive post (131) is in contact with the positive lead-out plate (141), and a portion of the inner end of the negative conductive post (132) is matched with a step piece on the second insulating spacer (162) and another portion of the negative conductive post (132) is in contact with the negative lead-out plate (142).

[0097] In some embodiments of the present disclosure, the sizes of the first insulating piece vertical plate (161b) and the second insulating piece vertical plate (162b) are each in the range of 0.3 mm to 1.5 mm in the longitudinal direction of the battery housing. To ensure that the positive read-out plate (141) and the negative read-out plate (142) are insulated from the battery housing (110) and to minimize the space occupied in the longitudinal direction of the battery housing (110) when the thickness is less than 0.3 mm, welding heat may melt the spacers when the tabs and read-out plates are welded, resulting in insufficient insulation. When the thickness exceeds 1.5 mm, too much space of the electrode core (120) is occupied, reducing space utilization and affecting the design capacity of the battery (100). Accordingly, after a number of experiments and adjustments by the inventors of the present disclosure, the sizes of both the first insulating piece vertical plate (161b) and the second insulating piece vertical plate (162b) are selected to be 0.3 mm to 1.5 mm in the longitudinal direction of the battery housing (110).

[0098] As illustrated in FIGS. 11 and 12, the first insulating spacer (161) includes a first support piece (161a) and a first insulating piece connected to the first support piece (161a). The inner and outer ends of the first support piece (161a) are in contact with the first plate piece (111) and the electrode core (120) of the battery (100), respectively, and the first insulating piece is matched with the positive read-out plate (141) and is arranged between the positive read-out plate (141) and the battery housing (110). The second insulating spacer (162) includes a second support piece (162a) and a second insulating piece connected to the second support piece (162a). The inner and outer ends of the second support piece (162a) are in contact with the ends of the second plate piece (112) and the electrode core (120), respectively, and the second insulating piece is matched with the negative read-out plate (142) and is arranged between the negative read-out plate (142) and the battery housing (110).

[0099] The first insulating piece includes a first insulating piece vertical plate (161b) and a first insulating piece horizontal plate (161c). The first insulating piece vertical plate (161b) is arranged between the positive first connecting sheet (141a) and the first plate piece (111), and the first insulating piece horizontal plate (161c) is arranged in the thickness direction between the positive second connecting sheet (141b) and the side plate of the battery housing (110). The second insulating piece includes a second insulating piece vertical plate (162b) and a second insulating piece horizontal plate (162c). The second insulating piece vertical plate (162b) is arranged between the negative first connecting sheet (142a) and the second plate piece (112), and the second insulating piece horizontal plate (162c) is arranged in the thickness direction between the negative second connecting sheet (142b) and the side plate of the battery housing (110).

[0100] In some embodiments of the present disclosure, the first plate piece (111), the second plate piece (112), the third plate piece (113), the fourth plate piece (114), and the fifth plate piece (115) are configured as a lower housing with one side open, and the sixth plate piece (116) is fixedly connected to the lower housing to block the open end of the lower housing. Thus, the electrode core (120) enters the interior of the battery housing (110) through a very wide open end rather than through a narrow channel, thereby greatly reducing installation costs and saving installation time.

[0101] Specifically, the first insulating piece horizontal plate (161c) is arranged between the positive second connecting sheet (141b) and the fifth plate piece (115), and the second insulating piece horizontal plate (162c) is arranged between the negative second connecting sheet (142b) and the fifth plate piece (115).

[0102] In the longitudinal direction of the battery housing (110), the size of the first support piece (161a) is larger than the size of the first insulating piece vertical plate (161b) in the longitudinal direction of the battery housing (110), and the size of the second support piece (162a) in the longitudinal direction of the battery housing (110) is larger than the size of the second insulating piece vertical plate (162b) in the longitudinal direction of the battery housing (110). Accordingly, the first support piece (161a) and the second support piece (162a) can firmly clamp the electrode core (120) inside the battery housing (110) to prevent the electrode core (120) from moving inside the battery housing (110).

[0103] In some embodiments of the present disclosure, the outer surface of the positive conductive post (131) extends out of the battery housing and has a distance of 2 mm to 5 mm from the outer surface of the first plate piece (111), and the outer surface of the negative conductive post (132) extends out of the battery housing and has a distance of 2 mm to 5 mm from the outer surface of the second plate piece (112). Thus, it is ensured that the positive conductive post (131) and the negative conductive post (132) can have sufficient protrusions to be connected to an external electrical component. Additionally, when the entire length of the battery (100) is fixed, the space of the battery (100) in the longitudinal direction is not excessively occupied to ensure that the battery (100) has sufficient capacity.

[0104] According to the battery (100) in this embodiment of the present disclosure, both the electrode core (120) and the read-out plate are arranged in the battery housing (110), and the read-out plate and the electrode core (120) are connected. Specifically, the read-out plate is connected to a tab of the electrode core (120), and a conductive post passes through the battery housing (110), the inner end of the conductive post is connected to the read-out plate, and the outer end of the conductive post protrudes from the battery housing (110), so that the conductive post can charge and discharge the electrode core (120).

[0105] Cross-sectional area s of the lead-out plate lead The relationship between and the battery capacity C is C / s leadIt should be noted that the cross-sectional area of ​​the lead-out plate determines the current carrying capacity of the lead-out plate. Therefore, in this relationship, the ratio of the battery capacity to the cross-sectional area of ​​the lead-out plate indicates the current carrying capacity of the lead-out plate. It should be noted that the cross-section of the lead-out plate is a surface orthogonal to the direction of current flow or a surface perpendicular to the thickness direction of the lead-out plate. When the lead-out plate is designed using a variable cross-section, the cross-sectional area of ​​the lead-out plate is the area of ​​the smallest cross-section on the lead-out plate.

[0106] After extensive experiments, the inventors of the present disclosure have discovered that this relationship ensures the current carrying capacity of the lead-out plate and ensures that the temperature of the lead-out plate does not rise excessively due to the small current carrying area during use of the battery (100), so that the internal temperature distribution of the battery (100) is not affected, the internal temperature of the battery (100) does not exceed the operating temperature range of the battery (100), and thermal safety issues of the battery (100) may not occur.

[0107] Additionally, the cross-sectional area s of the lead-out plate lead The relationship between and the battery capacity C is 2≤C / s lead ≤15. Therefore, it can be further ensured that the lead-out plate has sufficient current carrying capacity. The inventors find that a smaller ratio of the battery capacity C to the cross-sectional area s of the lead-out plate is not necessarily better. A ratio that is too small can cause the size of the lead-out plate to become excessively large, leading to redundant design and excessive occupation of the battery's internal space.

[0108] In some embodiments of the present disclosure, as illustrated in FIGS. 13 and 14, the read-out plates include a positive read-out plate (141) and a negative read-out plate (142). The conductive posts include a positive conductive post (131) and a negative conductive post (132). The positive conductive post (131) passes through the battery housing (110) and is connected to the positive read-out plate (141). The negative conductive post (132) passes through the battery housing (110) and is connected to the negative read-out plate (142). The positive read-out plate (141) is connected to the positive tab of the electrode core (120), and the negative read-out plate (142) is connected to the negative tab of the electrode core (120).

[0109] Cross-sectional area s of the positive lead-out plate (141) positive lead The relationship between and the battery capacity C is 5≤C / s positive lead ≤12 and the cross-sectional area s of the negative read-out plate (142) negative lead The relationship between and the battery capacity C is 6 ≤ C / s negative lead ≤15. The positive read-out plate (141) may be an aluminum sheet, and the negative read-out plate (142) may be a copper sheet. The current carrying capacity of the aluminum sheet is smaller than that of the copper sheet when the cross-sectional areas are the same. Therefore, when the positive read-out plate (141) and the negative read-out plate (142) have the same current capacities, the cross-sectional area of ​​the copper sheet may be reduced.

[0110] In some embodiments of the present disclosure, the cross-sectional area of ​​the positive read-out plate (141) is 14 mm 2 up to 150 mm 2 The range is, and the cross-sectional area of ​​the negative lead-out plate (142) is 10 mm 2 up to 130 mm 2The range is, and the battery capacity C is in the range of 30 Ah to 400 Ah.

[0111] The following describes the comparative example of Table 2 (i.e., prior art) and Examples 1 through 8 (i.e., embodiments of the present disclosure). Under the same operating conditions, the batteries in the comparative example and Examples 1 through 8 are each rapidly charged at a rate of 2C, and the temperature rise curves of the positive read-out plate (141) and the negative read-out plate (142) are recorded. The cross-sectional area s of the positive read-out plate (141) positive lead , cross-sectional area s of the negative lead-out plate (142) negative leadThe total capacity C of the battery in Comparative Examples and Examples 1 through 8 is selected from the data in Table 2 below. FIG. 29 is a diagram of the temperature rise curve of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 1. FIG. 30 is a diagram of the temperature rise curve of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 2. FIG. 31 is a diagram of the temperature rise curve of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 3. FIG. 32 is a diagram of the temperature rise curve of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 4. FIG. 33 is a diagram of the temperature rise curves of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 5. FIG. 34 is a diagram of the temperature rise curves of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 6. FIG. 35 is a diagram of the temperature rise curves of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 7. FIG. 36 is a diagram of the temperature rise curves of the positive read-out plate (141) and the negative read-out plate (142) in Comparative Example and Example 8.

[0112] Compared to the comparative example, in Examples 1 to 8, the temperature rises of the positive read-out plate (141) and the negative read-out plate (142) are lower, ensuring that the battery is in a good operating state.

[0113] Additionally, as illustrated in FIGS. 13 and 14, the positive read-out plate (141) and the negative read-out plate (142) have the same structure, and each includes a connected first connecting sheet and a second connecting sheet. The second connecting sheet of the positive read-out plate (141) is directly opposite the fifth plate piece (115) and is fixedly connected to the positive tab of the electrode core (120), the first connecting sheet of the positive read-out plate (141) is directly opposite the first plate piece (111) and is connected to the positive conductive post (131), the second connecting sheet of the negative read-out plate (142) is directly opposite the fifth plate piece (115) and is fixedly connected to the negative tab of the electrode core (120), and the first connecting sheet of the negative read-out plate (142) is directly opposite the second plate piece (112) and is connected to the negative conductive post (132). For ease of explanation, the first connection sheet of the positive read-out plate (141) may be labeled as the positive first connection sheet (141a), and the second connection sheet of the positive read-out plate (141) may be labeled as the positive second connection sheet (141b). Similarly, the first connection sheet of the negative read-out plate (142) may be labeled as the negative first connection sheet (142a), and the second connection sheet of the negative read-out plate (142) may be labeled as the negative second connection sheet (142b).

[0114] In some embodiments of the present disclosure, the sizes of both the positive first connecting sheet (141a) and the negative first connecting sheet (142a) are in the range of 0.8 mm to 2 mm in the longitudinal direction of the battery housing.

[0115] The battery housing (110) includes a first plate piece (111) and a second plate piece (112) facing each other in the longitudinal direction. A first connecting sheet of the positive read-out plate (141) (i.e., positive first connecting sheet (141a)) is parallel to the first plate piece (111), and a first connecting sheet of the negative read-out plate (142) (i.e., negative first connecting sheet (142a)) is parallel to the second plate piece (112).

[0116] A first insulating spacer (161) is arranged between a positive read-out plate (141) and a first plate piece (111), and a positive conductive post (131) passes through the first insulating spacer (161) and is connected to the positive read-out plate (141). A second insulating spacer (162) is arranged between a negative read-out plate (142) and a second plate piece (112), and a negative conductive post (132) passes through the second insulating spacer (162) and is connected to the negative read-out plate (142). This can avoid direct contact between the positive read-out plate (141) and the negative read-out plate (142) from the battery housing (110) and can improve the overall security performance of the battery (100).

[0117] At least a portion of the first insulating spacer (161) is arranged between the second connecting sheet of the positive read-out plate (141) and the fifth plate piece (115), and at least a portion of the second insulating spacer (162) is arranged between the second connecting sheet of the negative read-out plate (142) and the fifth plate piece (115). In other words, the first insulating spacer (161) can separate the positive read-out plate (141) from the first plate piece (111), as well as separate the positive read-out plate (141) from the fifth plate piece (115). The second insulating spacer (162) can separate the negative read-out plate (142) from the second plate piece (112), as well as separate the negative read-out plate (142) from the fifth plate piece (115).

[0118] As illustrated in FIGS. 1 to 14, the first insulating spacer (161) comprises a first support piece (161a) and a first insulating piece connected to the first support piece (161a). The inner and outer ends of the first support piece (161a) are in contact with the ends of the first plate piece (111) and the electrode core (120) of the battery (100), respectively, and the first insulating piece is matched with the positive read-out plate (141) and is arranged between the positive read-out plate (141) and the battery housing (110). The second insulating spacer (162) comprises a second support piece (162a) and a second insulating piece connected to the second support piece (162a). The inner and outer ends of the second support piece (162a) are respectively in contact with the ends of the second plate piece (112) and the electrode core (120) of the battery (100), and the second insulating piece is matched with the negative read-out plate (142) and is arranged between the negative read-out plate (142) and the battery housing (110).

[0119] The first insulating piece includes a first insulating piece vertical plate (161b) and a first insulating piece horizontal plate (161c). The first insulating piece vertical plate (161b) is arranged between a positive first connecting sheet (141a) and a first plate piece (111), and the first insulating piece horizontal plate (161c) is arranged between a positive second connecting sheet (141b) and a fifth plate piece (115). The second insulating piece includes a second insulating piece vertical plate (162b) and a second insulating piece horizontal plate (162c). The second insulating piece vertical plate (162b) is arranged between a negative first connecting sheet (142a) and a second plate piece (112), and the second insulating piece horizontal plate (162c) is arranged between a negative second connecting sheet (142b) and a fifth plate piece (115).

[0120] In the longitudinal direction of the battery housing (110), the thickness of the first support piece (161a) is greater than the thickness of the first insulating piece vertical plate (161b) in the longitudinal direction of the battery housing (110). Thus, the first support piece (161a) can be in contact with one end of the electrode core (120). In the longitudinal direction of the battery housing (110), the thickness of the second support piece (162a) is greater than the thickness of the second insulating piece vertical plate (162b) in the longitudinal direction of the battery housing (110). Thus, the second support piece (162a) can be in contact with the other end of the electrode core (120). Accordingly, the first support piece (161a) and the second support piece (162a) can jointly contact the electrode core (120) in the longitudinal direction of the battery housing (110) to avoid movement of the electrode core (120) in the longitudinal direction of the battery housing (110).

[0121] Specifically, the first insulating piece vertical plate (161b) is arranged between the positive first connecting sheet (141a) and the first plate piece (111), the first insulating piece horizontal plate (161c) is arranged between the positive second connecting sheet (141b) and the fifth plate piece (115), the second insulating piece vertical plate (162b) is arranged between the negative first connecting sheet (142a) and the second plate piece (112), and the second insulating piece horizontal plate (162c) is arranged between the negative second connecting sheet (142b) and the fifth plate piece (115).

[0122] The positive read-out plate (141) and the first insulating piece may each be configured as an "L"-shaped structure, the positive read-out plate (141) may be arranged on the inner side of the first insulating piece, and the two are joined together. The negative read-out plate (142) and the second insulating piece may each also be configured as an "L"-shaped structure, the negative read-out plate (142) may be arranged on the inner side of the second insulating spacer piece, and the two are joined together.

[0123] In some embodiments of the present disclosure, the sizes of the first insulating piece vertical plate (161b) and the positive first connecting sheet (141a) are each in the range of 0.3 mm to 1.5 mm in the longitudinal direction of the battery housing (110). That is, the thickness of the first insulating piece vertical plate (161b) and the thickness of the positive first connecting sheet (141a) are each in the range of 0.3 mm to 1.5 mm.

[0124] This ensures that the positive lead-out plate (141) and the negative lead-out plate (142) are insulated from the battery housing (110), and when the thickness is less than 0.3 mm, the space occupied in the battery housing (110) in the longitudinal direction can be minimized, and when the tab and lead-out plate are welded, the welding heat melts the spacer, which can result in insufficient insulation. When the thickness exceeds 1.5 mm, too much space of the electrode core (120) is occupied, reducing space utilization and affecting the design capacity of the battery (100).

[0125] The battery (100) in the embodiments of the present disclosure further comprises a sealing ring. The sealing ring is hermetically connected between a conductive post and a battery housing (110), and the sealing ring is composed of an elastic member and the sealing ring is an insulating member, so that the lead-out plate can be effectively insulated from the battery housing (110). The initial size of the sealing ring in the axial direction is d1, and the size of the sealing ring after compression in the axial direction is d2, and d1 and d2 satisfy 0.5 ≤ d2 / d1 ≤ 0.9. The units of d1 and d2 are both mm.

[0126] In some embodiments, the sealing ring is sleeved onto a conductive post and interposed between the inner wall of the battery housing (110) and the lead-out plate. It should be noted that the initial size d1 of the sealing ring in the axial direction of the sealing ring can be understood as the axial size of the sealing ring that is elastically reset after depressurization (d1 is the distance between two end surfaces facing each other in the axial direction of the sealing ring after the sealing ring is reset). When the sealing ring is interposed between the inner wall of the battery housing and the lead-out plate, d2 can be understood as the distance between two opposing surfaces of the sealing ring along the axial direction of the sealing ring. One of the two surfaces is the surface of the sealing ring in contact with the inner wall of the battery housing, and the other surface is the surface of the sealing ring in contact with the lead-out plate.

[0127] The initial size of the sealing ring in the axial direction is the size of the sealing ring in the axial direction after the sealing ring is not compressed. After the sealing ring is compressed, the size of the sealing ring is reduced in the axial direction. However, the ratio between the size of the compressed sealing ring and the initial size is limited. This ensures that the sealing ring has a compressed amount and facilitates the installation of spacers on the lead-out plate and the conductive post, and also ensures the sealing performance between the lead-out plate and the battery housing (110) and the sealing performance between the conductive post and the sealing ring. Additionally, the capacity of the battery is improved without changing the size of the battery.

[0128] After the sealing ring is compressed, the size of the sealing ring in the axial direction is reduced. Accordingly, the size of the sealing ring in the radial direction naturally increases, and the two side surfaces of the sealing ring in the axial direction are each configured as rings, and the outer end of the sealing ring in the axial direction contacts the inner wall of the battery housing (110), and the inner end of the sealing ring in the axial direction contacts the lead-out plate. Accordingly, the two ends of the sealing ring in the axial direction are interposed between the battery housing (110) and the lead-out plate.

[0129] At least one of the width of the contact area between the sealing ring and the inner wall of the battery housing (110) and the width of the contact area between the sealing ring and the lead-out plate is W, and W satisfies 1.2 mm ≤ W ≤ 2.5 mm. This ensures sealing between the sealing ring and the inner wall of the battery housing (110), and sealing between the sealing ring and the lead-out plate. The width of the contact between the inner wall of the battery housing (110) and the sealing ring can be understood as the distance between two outer contours of the contact area between the inner wall of the battery housing (110) and the sealing ring in the radial direction of the sealing ring. The width of the contact area between the sealing ring and the lead-out plate can be understood as the distance between two outer contours of the contact area between the sealing ring and the lead-out plate in the radial direction of the sealing ring.

[0130] In other embodiments of the present disclosure, as illustrated in FIGS. 19 and 20, a sealing ring is sleeved onto a conductive post, a flange is additionally arranged on the outer peripheral surface of the conductive post, the flange is connected to a lead-out plate, and at least a portion of the sealing ring is interposed between the inner wall of the battery housing and the flange. It should be noted that when the sealing ring is interposed between the inner wall of the battery housing and the flange, d2 can be understood as the distance between two opposing surfaces of the sealing ring along the axial direction of the sealing ring. One of the two surfaces is the surface of the sealing ring in contact with the inner wall of the battery housing, and the other surface is the surface of the sealing ring in contact with the flange.

[0131] In other words, the inner end of the sealing ring does not contact the lead-out plate, but contacts the flange of the conductive post. Specifically, the sealing ring comprises a first sealing ring (151) and a second sealing ring (152). The first sealing ring (151) is sleeved onto the positive conductive post, a portion of the first sealing ring (151) extends into the via (102) of the first plate piece (111), and another portion of the first sealing ring (151) is interposed between the positive conductive post flange (131e) of the positive conductive post and the first plate piece (111). The second sealing ring (152) is sleeved onto a negative conductive post, a portion of the second sealing ring (152) extends into a via (102) of the second plate piece (112), and another portion of the second sealing ring (152) is interposed between the negative conductive post flange (132e) of the negative conductive post and the second plate piece (112).

[0132] In some embodiments of the present disclosure, a spacer is arranged between a lead-out plate and a battery housing (110), and both a conductive post and a sealing ring pass through the spacer, and the inner end of the conductive post is connected to the lead-out plate, and the inner end of the sealing ring contacts the lead-out plate. The sealing ring is sleeved on the outer peripheral surface of the conductive post. The sealing ring, together with the conductive post, may be inserted into a via on the battery housing (110) through which the conductive post passes. Alternatively, the sealing ring may not enter the via, so that the sealing ring can ensure that the conductive post does not move radially in the via to avoid contact with the inner peripheral surface of the via.

[0133] Specifically, a portion of the inner end of the sealing ring may be matched with a step piece of the spacer to restrict movement of the sealing ring and the conductive post in the radial direction of the via, and another portion of the inner end of the sealing ring may be in contact with the lead-out plate.

[0134] In some embodiments of the present disclosure, the spacer comprises a support piece and an insulating piece connected to the support piece. The inner end and the outer end of the support piece are in contact with the battery housing (110) and the electrode core (120) of the battery (100), respectively. The insulating piece is matched with a lead-out plate and is arranged between the lead-out plate and the battery housing (110).

[0135] The insulating piece and the lead-out plate may have approximately the same structure, and, for example, each may be configured as an "L" shape. The insulating piece includes a vertically connected insulating piece vertical plate and an insulating piece horizontal plate. The lead-out plate includes a vertically connected first connecting sheet and a second connecting sheet. The insulating piece vertical plate may be arranged between the first connecting sheet and one side plate of the housing, and the insulating piece horizontal plate may be arranged between the second connecting sheet and one side plate of the housing.

[0136] In some embodiments of the present disclosure, the battery housing (110) is constructed of an aluminum alloy piece, and the plate thickness of the lower housing and the plate thickness of the sixth plate piece (116) are in the range of 0.2 mm to 0.5 mm. Because the hardness of the aluminum alloy piece is low, the plate thickness of the lower housing and the plate thickness of the sixth plate piece (116) need to be set larger to ensure the structural strength of the battery housing (110).

[0137] In some other embodiments of the present disclosure, the battery housing (110) is constructed of a stainless steel piece or a nickel-plated steel piece, and the plate thickness of the lower housing and the plate thickness of the sixth plate piece (116) are in the range of 0.05 mm to 0.2 mm. Because the stainless steel piece or the nickel-plated steel piece has high hardness, the plate thickness of the lower housing and the plate thickness of the sixth plate piece (116) can be set smaller. This ensures the structural strength of the battery housing (110) while reducing the manufacturing costs of the battery housing (110).

[0138] It should be noted that the plate thickness of the lower housing is any one of the plate thicknesses of the first plate piece (111), the second plate piece (112), the third plate piece (113), the fourth plate piece (114), and the fifth plate piece (115).

[0139] As illustrated in FIGS. 16 to 18, a positive read-out plate (141) and a negative read-out plate (142) are arranged in a battery housing (110), and the positive read-out plate (141) and the negative read-out plate (142) are respectively connected to the positive tab and the negative tab of an electrode core (120). The positive read-out plate (141) includes a positive first connection sheet (141a), and the negative read-out plate (142) includes a negative first connection sheet (142a). The positive first connection sheet (141a) and the negative first connection sheet (142a) are distributed at opposite ends of the electrode core (120) along the longitudinal direction of the battery housing (110). The distance between the positive first connecting sheet (141a) and the negative first connecting sheet (142a) in the longitudinal direction of the battery housing (110) is L1, and the size of the battery (100) in the longitudinal direction of the battery housing (110) is L. L1 and L satisfy 0.95 ≤ L1 / L ≤ 0.99. It can be understood that the positive first connecting sheet (141a) has a first surface facing the negative first connecting sheet (142a), the negative first connecting sheet (142a) has a second surface facing the positive first connecting sheet (141a), and the distance between the first surface of the positive first connecting sheet (141a) and the second surface of the negative first connecting sheet (142a) in the longitudinal direction of the battery housing (110) is L1. The battery housing (110) has a first surface and a second surface that face each other in the longitudinal direction, and the distance between the first surface and the second surface of the battery housing (110) in the longitudinal direction of the battery housing (110) is L. It should be noted that the longitudinal direction of the battery housing (110) coincides with the longitudinal direction of the battery (100).

[0140] In some embodiments, the positive read-out plate (141) comprises a positive second connecting sheet (141b) and a positive first connecting sheet (141a) to be connected. The negative read-out plate (142) comprises a negative second connecting sheet (142b) and a negative first connecting sheet (142a) to be connected. Accordingly, in the present disclosure, "L1" is the distance between the inner surface of the positive first connecting sheet (141a) and the inner surface of the negative first connecting sheet (142a) in the longitudinal direction of the battery housing (110).

[0141] L1 and L satisfy 0.95≤L1 / L≤0.99. It can be ensured that the positive read-out plate (141) and the negative read-out plate (142) have sufficient conductivity performance, and that the positive read-out plate (141) and the negative read-out plate (142) do not occupy too much internal space of the battery housing (110), and especially do not occupy much space of the battery housing (110) in the longitudinal direction.

[0142] In some embodiments of the present disclosure, the thickness of the positive first connecting sheet (141a) is in the range of 0.6 mm to 2 mm, and the thickness of the negative first connecting sheet (142a) is in the range of 0.6 mm to 2 mm. The thickness of the positive first connecting sheet (141a) is the size of the positive first connecting sheet (141a) in the longitudinal direction of the battery housing, and the thickness of the negative first connecting sheet (142a) is the size of the negative first connecting sheet (142a) in the longitudinal direction of the battery housing.

[0143] The positive read-out plate (141) may be an integrally formed member configured in an "L" shape, and the negative read-out plate (142) may be an integrally formed member configured in an "L" shape. The thickness of the positive read-out plate (141) may be the thickness of the positive first connection sheet (141a), and the thickness of the negative read-out plate (142) may be the thickness of the negative first connection sheet (142a). This is because the thickness of the positive first connection sheet (141a) and the thickness of the negative first connection sheet (142a) affect the extent of the space occupied by the positive read-out plate (141) and the negative read-out plate (142) in the longitudinal direction of the battery housing (110). Accordingly, the thickness of the positive read-out plate (141) is limited to 0.6 mm to 2 mm, and the thickness of the negative read-out plate (142) is limited to 0.6 mm to 2 mm. The positive read-out plate (141) and the negative read-out plate (142) may not occupy too much internal space of the battery housing (110), and in particular, may not occupy much space of the battery housing (110) in the longitudinal direction. Thus, the capacity of the battery is improved without changing the size of the battery. Positive conductive posts (131) are arranged on the first plate piece (111), and negative conductive posts (132) are arranged on the second plate piece (112). However, the positive conductive post (131) does not come into direct contact with the first plate piece (111), and the negative conductive post (132) does not come into direct contact with the second plate piece (112).

[0144] The positive first connecting sheet (141a) is parallel to the first plate piece (111) and connected to the positive conductive post (131), the negative first connecting sheet (142a) is parallel to the second plate piece (112) and connected to the negative conductive post (132), and the distance between the inner surface of the positive first connecting sheet (141a) and the inner surface of the negative lead-out plate in the longitudinal direction of the battery housing (110) is "L1".

[0145] In some embodiments, the electrode core (120) has a first end surface and a second end surface facing each other. The positive tab of the electrode core (120) is drawn from the first end surface. The negative tab of the electrode core (120) is drawn from the second end surface. The distance between the first end surface of the electrode core (120) and the positive first connection sheet (141a) in the longitudinal direction of the battery housing (110) is in the range of 2 mm to 12 mm, and the distance between the second end surface of the electrode core (120) and the negative first connection sheet (142a) in the longitudinal direction of the battery housing (110) is in the range of 2 mm to 12 mm.

[0146] The battery housing (110) further includes a third plate piece (113) and a fourth plate piece (114) facing each other in the width direction. The distance between the inner surface of the third plate piece (113) and the inner surface of the fourth plate piece (114) in the width direction of the battery housing (110) is H1, and the size of the battery (100) in the width direction of the battery housing (110) is H. H1 and H satisfy 0.92 ≤ H1 / H ≤ 0.98. This ensures that the plate thicknesses of the third plate piece (113) and the fourth plate piece (114) can provide sufficient strength to the battery housing (110) and that the capacity of the battery (100) is not affected by the reduced space within the battery housing (110), because the plate thicknesses of the third plate piece (113) and the fourth plate piece (114) are large. It should be noted that the width direction of the battery housing (110) matches the width direction of the battery (100).

[0147] In some embodiments of the present disclosure, the battery housing (110) further comprises a fifth plate piece (115) and a sixth plate piece (116) facing each other in the thickness direction. The distance between the inner surface of the fifth plate piece (115) and the inner surface of the sixth plate piece (116) in the thickness direction of the battery housing (110) is D1, and the size of the battery (100) in the thickness direction of the battery housing (110) is D. L > H > D, and D1 and D satisfy 0.93 ≤ D1 / D ≤ 0.99. Thus, the thicknesses of the fifth plate piece (115) and the sixth plate piece (116) are not excessively large, so that when the volume of the battery housing (110) is fixed, the fifth plate piece (115) and the sixth plate piece (116) do not excessively occupy the internal space of the battery housing (110). Additionally, the fifth plate piece (115) and the sixth plate piece (116) have a specific thickness, which further ensures that the battery housing (110) has sufficient structural strength. It should be noted that the thickness direction of the battery housing (110) coincides with the thickness direction of the battery (100).

[0148] A positive second connecting sheet (141b) is arranged on a positive first connecting sheet (141a) and extends toward the interior of the battery housing (110), and a negative second connecting sheet (142b) is connected to the negative first connecting sheet (142a) and extends toward the interior of the battery housing (110), and both the positive second connecting sheet (141b) and the negative second connecting sheet (142b) are parallel to the fifth plate piece (115) and the sixth plate piece (116). Specifically, both the positive second connecting sheet (141b) and the negative second connecting sheet (142b) are bonded to the inner surface of the fifth plate piece (115).

[0149] The battery in the embodiments of the present disclosure comprises a lower housing and an upper housing. The upper housing and the lower housing may be connected by welding. After the lower housing and the upper housing are joined together, both the upper housing and the lower housing limit a receiving space for accommodating an electrode core (120).

[0150] According to some embodiments of the present disclosure, the lower housing comprises a first plate piece (111) and a second plate piece (112) — the first plate piece (111) and the second plate piece (112) are opposite each other in the longitudinal direction of the battery (100) —; Third plate piece (113) and fourth plate piece (114) — The third plate piece (113) and the fourth plate piece (114) face each other in the width direction of the battery (100), the third plate piece (113) is separately connected to one end on the same side of the first plate piece (111) and the second plate piece (112) in the width direction of the battery (100), and the fourth plate piece (114) is separately connected to the other end on the same side of the first plate piece (111) and the second plate piece (112) in the width direction of the battery (100) —; It includes a fifth plate piece (115), and the outer peripheral edge of the fifth plate piece (115) is separately connected to one end on the same side of the first plate piece (111), second plate piece (112), third plate piece (113) and fourth plate piece (114) in the thickness direction of the battery (100). The first plate piece (111), second plate piece (112), third plate piece (113), and fourth plate piece (114) are configured as peripheral side walls of the lower housing. Thus, the opening of the lower housing is very large, and accordingly, the electrode core (120) can be conveniently installed inside the battery housing (110), thereby improving the installation efficiency of the battery (100).

[0151] Additionally, the first plate piece (111), the second plate piece (112), the third plate piece (113), the fourth plate piece (114), and the fifth plate piece (115) are integrally formed members. The lower housing can be integrally formed through sheet metal stamping. Thus, the molding efficiency of the lower housing is greatly increased, and the structural strength of the lower housing is also improved. The upper housing is composed of the sixth plate piece (116), and the sixth plate piece (116) and the fifth plate piece (115) face each other directly in the thickness direction of the battery (100).

[0152] A battery according to the present disclosure includes a battery housing (110), an electrode core (120), a lead-out piece, and a spacer.

[0153] As illustrated in FIGS. 1 to 15, there is a receiving space in the battery housing (110), and the electrode core (120) and the read-out plate are arranged in the battery housing (110), and the read-out plate is connected to the tab of the electrode core (120). Part of the spacer is interposed between the read-out plate and the battery housing (110), and another part of the spacer is interposed between the end of the electrode core (120) and the battery housing (110).

[0154] In other words, the spacer of the present disclosure not only separates the read-out plate from the battery housing (110) to avoid a short circuit caused by contact between the read-out plate and the battery housing (110), but also contacts two ends of the electrode core (120) to avoid movement of the electrode core (120) in the direction of the battery housing (110) and improve the stability of the electrode core. Thus, it is ensured that the tab arranged on the electrode core (120) does not move, and the connection stability between the tab and the read-out plate is improved.

[0155] In some embodiments of the present disclosure, the spacer comprises a support piece and an insulating piece connected to the support piece, the support piece is interposed between the end of the electrode core (120) and the battery housing (110), and the insulating piece is matched with a lead-out plate and interposed between the lead-out plate and the battery housing (110). In practice, the insulating piece is not only an insulating piece, but the support piece is an insulating member. Each of the support piece and the insulating piece may be a member formed integrally.

[0156] Both ends of the support piece may be in contact with the end of the electrode core (120) and the inner wall of the battery housing (110), and the insulating piece may be matched with the lead-out plate. Additionally, the insulating piece is further spaced apart from the lead-out plate and the battery housing (110) to avoid leakage caused by direct contact between the lead-out plate and the battery housing (110).

[0157] Additionally, the lead-out plate may be configured in an "L" shape and includes a first connecting sheet and a second connecting sheet, the first connecting sheet being connected to the second connecting sheet, the first connecting sheet being parallel to the side plate of the battery housing (110) in the longitudinal direction, and the second connecting sheet being parallel to the side plate of the battery housing (110) in the thickness direction.

[0158] The insulating piece is also configured in an "L" shape and includes an insulating piece vertical plate and an insulating piece horizontal plate. The insulating piece vertical plate is connected to the insulating piece horizontal plate, the insulating piece vertical plate is arranged between the side plate of the battery housing (110) and the first connecting sheet in the longitudinal direction, and the insulating piece horizontal plate is arranged between the side plate of the battery housing (110) and the second connecting sheet in the thickness direction.

[0159] The size of the support piece in the longitudinal direction of the battery housing (110) is larger than the size of the insulating piece vertical plate in the longitudinal direction of the battery housing (110), and the support piece protrudes toward the center of the battery housing (110) relative to the insulating piece vertical plate, so that the support piece can come into contact with the end of the electrode core (120), and the end of the electrode core (120) does not come into contact with the insulating piece vertical plate.

[0160] It can be understood that the L-shaped lead-out plate can be arranged inside the L-shaped insulating piece so that the insulating piece can package the entire lead-out plate in order to avoid direct contact with the battery housing (110).

[0161] Additionally, the outer surface of the support piece is coplanar with the outer surface of the insulating piece vertical plate, and the inner surface of the support piece is coplanar with the inner end of the insulating piece horizontal plate. In other words, the size of the support piece protruding inward relative to the insulating piece vertical plate is the size of the insulating piece horizontal plate in the longitudinal direction. When the second connecting sheet on the insulating piece horizontal plate is laminated together with the tab of the electrode core (120) and connected thereto, the support piece contacts the end of the electrode core (120) in the longitudinal direction.

[0162] In some embodiments of the present disclosure, an electrolyte immersion through hole (101) and a via through which a conductive post passes are provided on an insulating piece vertical plate. The conductive post passes through the via on the insulating piece and is connected to a first connecting sheet. The electrolyte immersion through hole (101) provided on the insulating piece can facilitate the injection of electrolytes into the battery housing (110). Additionally, gas inside the battery housing (110) can also be discharged out of the electrolyte immersion through hole (101). The electrolyte immersion through hole (101) can be understood to be directly opposite the liquid injection hole and explosion-proof valve of the battery (100) on the battery housing (110) in the longitudinal direction of the battery housing (110).

[0163] In some embodiments of the present disclosure, the battery housing (110) comprises a first plate piece (111) and a second plate piece (112) facing each other in the longitudinal direction of the battery housing (110), a third plate piece (113) and a fourth plate piece (114) facing each other in the width direction of the battery housing (110), and a fifth plate piece (115) and a sixth plate piece (116) facing each other in the thickness direction of the battery housing (110). The first plate piece (111), the second plate piece (112), the third plate piece (113), the fourth plate piece (114), and the fifth plate piece (115) are configured as a lower housing with one end open, and the sixth plate piece (116) is fastened to the lower housing to block the open end.

[0164] The read-out plates include a positive read-out plate (141) and a negative read-out plate (142). The positive read-out plate (141) is separately connected to a positive conductive post (131) and a positive tab of the electrode core (120), and the negative read-out plate (142) is separately connected to a negative conductive post (132) and a negative tab of the electrode core (120).

[0165] The spacer includes a first insulating spacer (161) and a second insulating spacer (162). The vertical plate of the first insulating spacer (161) is arranged between the first plate piece (111) and the first connecting sheet of the positive read-out plate (141), the horizontal plate of the first insulating spacer (161) is arranged between the fifth plate piece (115) and the second connecting sheet of the positive read-out plate (141), the vertical plate of the second insulating spacer (162) is arranged between the second plate piece (112) and the first connecting sheet of the negative read-out plate (142), and the horizontal plate of the second insulating spacer (162) is arranged between the fifth plate piece (115) and the second connecting sheet of the negative read-out plate (142).

[0166] The electrode core (120) is directly arranged in the lower housing, and then the tab is welded to the lead-out plate. The welding method may be laser welding, resistance welding, or other welding methods. The lead-out plate is designed in an L shape to facilitate welding with the tab. After the electrode core (120) is integrally assembled with the housing, the tab can be naturally flattened and laminated together with the lead-out plate. Then, the tab is welded together with the lead-out plate, thereby avoiding the risk of positive or negative electrode contact caused by the bent tab, reducing the size of the tab, increasing the utilization of the metal current collector, improving process yield, and reducing product costs.

[0167] After the tab of the electrode core (120) is welded to the lead-out plate of the lower housing, the upper housing (sixth plate piece (116)) is assembled. After the upper housing and the lower housing are assembled, the upper housing and the lower housing are sealed and connected by laser welding or crimping so that the upper housing and the lower housing form a sealed body.

[0168] After the battery housing (110) is assembled, liquid injection can be performed through the liquid injection hole. After the liquid injection is completed, the liquid injection hole needs to be sealed, and the sealing method is metal sheet welding or rubber plug sealing. An explosion-proof valve of the battery (100) is arranged on the first plate piece (111) or the second plate piece (112), and one or more explosion-proof valves may be arranged on the first plate piece (111) or the second plate piece (112).

[0169] The explosion-proof valve is formed on a side plate on the battery housing (110) by laser scribing or direct stamping. Alternatively, holes of the same shape and size as the explosion-proof valve may be stamped on the battery housing (110), and then the explosion-proof valve is welded to the battery housing (110).

[0170] According to some embodiments of the present disclosure, the lead-out plate is configured in an "L" shape. A second connecting sheet is connected to one side of a first connecting sheet and extends toward the interior of the housing, and the second connecting sheet extending toward the interior of the housing can be welded and secured by a plurality of tabs so that the plurality of tabs are not bent too much and the tabs are flatter during and after welding.

[0171] In other embodiments of the present disclosure, the lead-out plate is configured in a "T" shape, and the second connecting sheet is connected to the middle region of the first connecting sheet and extends toward the interior of the battery housing (110). Because the "T" shaped lead-out plate still has the second connecting sheet extending toward the interior of the housing, the tabs can still be welded evenly to the second connecting sheet, and the tabs are not bent too much, which greatly improves the connection stability between the tabs and the lead-out plate. One portion of the plurality of tabs can be welded to one side surface of the second connecting sheet in the thickness direction, and another portion of the plurality of tabs can be welded to the other side surface of the second connecting sheet in the thickness direction.

[0172] The first connecting sheet may be parallel to the first plate piece (111) and the second plate piece (112), and a conductive post may be sleeved on the first plate piece (111) or the second plate piece (112) and connected to the first connecting sheet.

[0173] The conductive posts include a positive conductive post (131) and a negative conductive post (132). The lead-out plates include a positive lead-out plate (141) and a negative lead-out plate (142). The positive conductive post (131) passes through the first plate piece (111) and is connected to the first connecting sheet of the positive lead-out plate (141), and the negative conductive post (132) passes through the second plate piece (112) and is connected to the first connecting sheet of the negative lead-out plate (142). Additionally, the second connecting sheet is parallel to the fifth plate piece (115) or the sixth plate piece (116).

[0174] It should be noted that in the present disclosure, the conductive posts of the battery (100) include a positive conductive post (131) and a negative conductive post (132), the read-out plates include a positive read-out plate (141) and a negative read-out plate (142), and the tabs include a positive tab and a negative tab. The positive read-out plate (141) includes a positive first connection sheet (141a) and a positive second connection sheet (141b), and the negative read-out plate (142) includes a negative first connection sheet (142a) and a negative second connection sheet (142b).

[0175] A spacer is arranged between the lead-out plate and the battery housing (110), and a conductive post passes through the spacer and is connected to the lead-out plate. The spacer can avoid direct contact between the lead-out plate and the battery housing (110) to avoid the risk of the battery housing (110) being electrically charged and to improve the security performance of the battery (100).

[0176] In some embodiments of the present disclosure, the spacer comprises a support piece and an insulating piece connected to the support piece, the support piece is interposed between the end of the electrode core (120) and the battery housing (110), and the insulating piece is matched with a lead-out plate and interposed between the lead-out plate and the battery housing (110). In practice, the insulating piece is not only an insulating piece, but the support piece is an insulating member. Each of the support piece and the insulating piece may be a member formed integrally.

[0177] The insulating piece is also configured in an "L" shape and includes an insulating piece vertical plate and an insulating piece horizontal plate. The insulating piece vertical plate is connected to the insulating piece horizontal plate, the insulating piece vertical plate is arranged between the side plate of the battery housing (110) and the first connecting sheet in the longitudinal direction, and the insulating piece horizontal plate is arranged between the side plate of the battery housing (110) and the second connecting sheet in the thickness direction.

[0178] The following is a brief description of a battery pack according to embodiments of the present disclosure.

[0179] As illustrated in FIG. 37, a battery pack (1000) according to embodiments of the present disclosure includes the aforementioned battery (100). Because the battery (100) is arranged in the battery pack (1000) according to embodiments of the present disclosure, the security performance of the battery pack (1000) is stronger and the power of the battery pack (1000) is increased.

[0180] The following is a brief description of a vehicle (10000) according to embodiments of the present disclosure.

[0181] As illustrated in FIG. 38, a vehicle (10000) according to embodiments of the present disclosure includes the aforementioned battery pack (1000). Since the aforementioned battery pack (1000) according to embodiments of the present disclosure is arranged on the vehicle (10000), the driving range of the vehicle (10000) is significantly improved, and the electrical security performance of the vehicle (10000) is also significantly improved.

[0182] Additionally, as described in FIG. 39, in another embodiment of the present disclosure, the vehicle (10000) includes the aforementioned battery (100). In the aforementioned embodiment, the battery (100) is configured such that the driving range of the vehicle (10000) can be improved, and the electrical security performance of the vehicle (10000) is also significantly improved.

[0183] In the descriptions of this specification, descriptions using reference terms such as “one embodiment,” “some embodiments,” “exemplary embodiment,” “example,” “specific example,” or “some examples” indicate that specific characteristics, structures, materials, or features described with reference to an embodiment or example are included in at least one embodiment or example of this disclosure. In this specification, exemplary descriptions of the foregoing terms do not necessarily refer to the same embodiment or example. Additionally, the specific features, structures, materials, or characteristics described may be combined in an appropriate manner in any one or more of the embodiments or examples.

[0184] Although embodiments of the present disclosure have been illustrated and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and purposes of the present disclosure, and that the scope of the present disclosure is defined by the appended claims and their equivalents.

Claims

Claim 1 A battery (100) comprising: a battery housing (110); and an electrode core (120), lead-out plates, and conductive posts, wherein the electrode core (120) and the lead-out plates are all arranged in the battery housing (110), the lead-out plates are connected to the electrode core (120), and the conductive posts pass through the battery housing (110) so that the conductive posts are connected to the lead-out plates; and the cross-sectional area s of the lead-out plates lead The relationship between and the capacity C of the battery (100) is C / s lead ≤15 and s lead The unit is mm 2 A battery (100) in which the unit of C is Ah. Claim 2 In claim 1, the cross-sectional area s of the lead-out plates lead The relationship between and the capacity C of the battery (100) is 2≤C / s lead ≤15 people, battery (100). Claim 3 In claim 1 or 2, the read-out plates include a positive read-out plate (141) and a negative read-out plate (142), and the conductive posts include a positive conductive post (131) and a negative conductive post (132), the positive read-out plate (141) passes through the battery housing (110) and is connected to the positive conductive post (131), and the negative read-out plate (142) passes through the battery housing (110) and is connected to the negative conductive post (132); and the cross-sectional area s of the positive read-out plate (141). positive lead The relationship between and the capacity C of the battery (100) is 5≤C / s positive lead ≤12, and the cross-sectional area s of the negative read-out plate (142) negative lead The relationship between and the capacity C of the battery (100) is 6≤C / s negative lead ≤15, and each of the cross-sections of the positive read-out plate (141) and the negative read-out plate (142) is a surface orthogonal to the direction of current flow, and s positive lead and s negative lead The units are mm 2 A battery (100) in which the unit of C is Ah. Claim 4 In paragraph 3, the cross-sectional area of ​​the positive lead-out plate (141) is 14 mm 2 up to 150 mm 2 The range is, and the cross-sectional area of ​​the negative read-out plate (142) is 10 mm 2 up to 130 mm 2 A battery (100) having a range of 30 Ah to 400 Ah. Claim 5 A battery (100), wherein, in paragraph 3 or 4, the positive read-out plate (141) is an aluminum sheet and the negative read-out plate (142) is a copper sheet. Claim 6 A battery (100), wherein, in any one of claims 3 to 5, each of the positive read-out plate (141) and the negative read-out plate (142) comprises a connected first connecting sheet and a second connecting sheet, wherein the second connecting sheet of the positive read-out plate (141) is connected to a positive tab of the electrode core (120), the first connecting sheet of the positive read-out plate (141) is connected to a positive conductive post (131), the second connecting sheet of the negative read-out plate (142) is connected to a negative tab of the electrode core (120), and the first connecting sheet of the negative read-out plate (142) is connected to a negative conductive post (132). Claim 7 In claim 6, the size of the first connecting sheet in the longitudinal direction of the battery (100) is in the range of 0.6 mm to 2 mm, the battery (100). Claim 8 In claim 7, the size of the first connecting sheet in the longitudinal direction of the battery (100) is in the range of 0.8 mm to 2 mm, the battery (100). Claim 9 In any one of claims 6 to 8, the battery housing (110) comprises a first plate piece (111) and a second plate piece (112) facing each other in the longitudinal direction of the battery (100), and each of the first connecting sheet of the positive read-out plate (141) and the first connecting sheet of the negative read-out plate (142) is parallel to the first plate piece (111) and the second plate piece (112), the battery (100). Claim 10 In claim 9, the battery housing (110) further comprises a third plate piece (113) and a fourth plate piece (114) facing each other in the width direction of the battery (100), and a fifth plate piece (115) and a sixth plate piece (116) facing each other in the thickness direction of the battery (100), wherein the second connecting sheet of the positive read-out plate (141) and the second connecting sheet of the negative read-out plate (142) are each parallel to the fifth plate piece (115) and the sixth plate piece (116), the battery (100). Claim 11 In claim 10, the first plate piece (111), the second plate piece (112), the third plate piece (113), the fourth plate piece (114), and the fifth plate piece (115) are configured as a lower housing with one side open, and the sixth plate piece (116) is fixedly connected to the lower housing to block the open end of the lower housing, the battery (100). Claim 12 A battery (100) according to any one of claims 9 to 11, further comprising a first insulating spacer (161) arranged in the battery housing (110), wherein at least a portion of the first insulating spacer (161) is positioned between the positive read-out plate (141) and the first plate piece (111), and the positive conductive post (131) passes through the first insulating spacer (161) and is connected to the positive read-out plate (141). Claim 13 A battery (100) according to any one of claims 9 to 12, further comprising a second insulating spacer (162) arranged in the battery housing (110), wherein at least a portion of the second insulating spacer (162) is positioned between the negative read-out plate (142) and the second plate piece (112), and the negative conductive post (132) passes through the second insulating spacer (162) and is connected to the negative read-out plate (142). Claim 14 In any one of claims 3 to 13, the relationship between the cross-sectional area s1 of the positive conductive post (131) and the capacity C of the battery (100) is 6 / 5 ≤ C / s1 ≤ 16 / 3, the relationship between the cross-sectional area s2 of the negative conductive post (132) and the capacity C of the battery (100) is 6 / 5 ≤ C / s2 ≤ 8, and the units of s1 and s2 are both mm 2 Phosphorus, battery (100). Claim 15 In claim 14, the cross-sectional area s1 of the positive conductive post (131) and the cross-sectional area s2 of the negative conductive post (132) are 12 mm 2 up to 315 mm 2 A battery (100) having a range of 30 Ah to 400 Ah. Claim 16 In paragraph 3, the positive conductive post (131) is an aluminum post and the negative conductive post (132) is a copper post, in a battery (100). Claim 17 A battery pack (1000) comprising a battery (100) according to any one of claims 1 to 16. Claim 18 A vehicle (10000) comprising a battery (100) according to any one of claims 1 to 16 or a battery pack (1000) according to claim 17.

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